Revert "Change AltStore naming to SideStore"

This reverts commit 646000920f.

AltStore/AltStore-Bridging-Header.h

@@ -0,0 +1,8 @@
+//
+//  Use this file to import your target's public headers that you would like to expose to Swift.
+//
+
+#import "NSAttributedString+Markdown.h"
+#import "ALTAppPatcher.h"
+
+#include "fragmentzip.h"

AltStore/AltStore.entitlements

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>aps-environment</key>
+	<string>development</string>
+	<key>com.apple.developer.siri</key>
+	<true/>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.com.rileytestut.AltStore</string>
+	</array>
+</dict>
+</plist>

AltStore/Analytics/AnalyticsManager.swift

@@ -0,0 +1,107 @@
+//
+//  AnalyticsManager.swift
+//  AltStore
+//
+//  Created by Riley Testut on 3/31/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltStoreCore
+
+import AppCenter
+import AppCenterAnalytics
+import AppCenterCrashes
+
+#if DEBUG
+private let appCenterAppSecret = "bb08e9bb-c126-408d-bf3f-324c8473fd40"
+#elseif RELEASE
+private let appCenterAppSecret = "b6718932-294a-432b-81f2-be1e17ff85c5"
+#else
+private let appCenterAppSecret = "e873f6ca-75eb-4685-818f-801e0e375d60"
+#endif
+
+extension AnalyticsManager
+{
+    enum EventProperty: String
+    {
+        case name
+        case bundleIdentifier
+        case developerName
+        case version
+        case size
+        case tintColor
+        case sourceIdentifier
+        case sourceURL
+    }
+    
+    enum Event
+    {
+        case installedApp(InstalledApp)
+        case updatedApp(InstalledApp)
+        case refreshedApp(InstalledApp)
+        
+        var name: String {
+            switch self
+            {
+            case .installedApp: return "installed_app"
+            case .updatedApp: return "updated_app"
+            case .refreshedApp: return "refreshed_app"
+            }
+        }
+        
+        var properties: [EventProperty: String] {
+            let properties: [EventProperty: String?]
+            
+            switch self
+            {
+            case .installedApp(let app), .updatedApp(let app), .refreshedApp(let app):
+                let appBundleURL = InstalledApp.fileURL(for: app)
+                let appBundleSize = FileManager.default.directorySize(at: appBundleURL)
+                
+                properties = [
+                    .name: app.name,
+                    .bundleIdentifier: app.bundleIdentifier,
+                    .developerName: app.storeApp?.developerName,
+                    .version: app.version,
+                    .size: appBundleSize?.description,
+                    .tintColor: app.storeApp?.tintColor?.hexString,
+                    .sourceIdentifier: app.storeApp?.sourceIdentifier,
+                    .sourceURL: app.storeApp?.source?.sourceURL.absoluteString
+                ]
+            }
+            
+            return properties.compactMapValues { $0 }
+        }
+    }
+}
+
+class AnalyticsManager
+{
+    static let shared = AnalyticsManager()
+    
+    private init()
+    {
+    }
+}
+
+extension AnalyticsManager
+{
+    func start()
+    {
+        AppCenter.start(withAppSecret: appCenterAppSecret, services: [
+            Analytics.self,
+            Crashes.self
+        ])
+    }
+    
+    func trackEvent(_ event: Event)
+    {
+        let properties = event.properties.reduce(into: [:]) { (properties, item) in
+            properties[item.key.rawValue] = item.value
+        }
+        
+        Analytics.trackEvent(event.name, withProperties: properties)
+    }
+}

AltStore/App Detail/AppContentViewController.swift

@@ -0,0 +1,234 @@
+//
+//  AppContentViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/22/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import AltStoreCore
+import Roxas
+
+import Nuke
+
+extension AppContentViewController
+{
+    private enum Row: Int, CaseIterable
+    {
+        case subtitle
+        case screenshots
+        case description
+        case versionDescription
+        case permissions
+    }
+}
+
+class AppContentViewController: UITableViewController
+{
+    var app: StoreApp!
+    
+    private lazy var screenshotsDataSource = self.makeScreenshotsDataSource()
+    private lazy var permissionsDataSource = self.makePermissionsDataSource()
+    
+    private lazy var dateFormatter: DateFormatter = {
+        let dateFormatter = DateFormatter()
+        dateFormatter.dateStyle = .medium
+        dateFormatter.timeStyle = .none
+        return dateFormatter
+    }()
+    
+    private lazy var byteCountFormatter: ByteCountFormatter = {
+        let formatter = ByteCountFormatter()
+        return formatter
+    }()
+    
+    @IBOutlet private var subtitleLabel: UILabel!
+    @IBOutlet private var descriptionTextView: CollapsingTextView!
+    @IBOutlet private var versionDescriptionTextView: CollapsingTextView!
+    @IBOutlet private var versionLabel: UILabel!
+    @IBOutlet private var versionDateLabel: UILabel!
+    @IBOutlet private var sizeLabel: UILabel!
+    
+    @IBOutlet private var screenshotsCollectionView: UICollectionView!
+    @IBOutlet private var permissionsCollectionView: UICollectionView!
+    
+    var preferredScreenshotSize: CGSize? {        
+        let layout = self.screenshotsCollectionView.collectionViewLayout as! UICollectionViewFlowLayout
+        
+        let aspectRatio: CGFloat = 16.0 / 9.0 // Hardcoded for now.
+        
+        let width = self.screenshotsCollectionView.bounds.width - (layout.minimumInteritemSpacing * 2)
+        
+        let itemWidth = width / 1.5
+        let itemHeight = itemWidth * aspectRatio
+        
+        return CGSize(width: itemWidth, height: itemHeight)
+    }
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+        
+        self.tableView.contentInset.bottom = 20
+                
+        self.screenshotsCollectionView.dataSource = self.screenshotsDataSource
+        self.screenshotsCollectionView.prefetchDataSource = self.screenshotsDataSource
+        
+        self.permissionsCollectionView.dataSource = self.permissionsDataSource
+        
+        self.subtitleLabel.text = self.app.subtitle
+        self.descriptionTextView.text = self.app.localizedDescription
+        self.versionDescriptionTextView.text = self.app.versionDescription
+        self.versionLabel.text = String(format: NSLocalizedString("Version %@", comment: ""), self.app.version)
+        self.versionDateLabel.text = Date().relativeDateString(since: self.app.versionDate, dateFormatter: self.dateFormatter)
+        self.sizeLabel.text = self.byteCountFormatter.string(fromByteCount: Int64(self.app.size))
+        
+        self.descriptionTextView.maximumNumberOfLines = 5
+        self.descriptionTextView.moreButton.addTarget(self, action: #selector(AppContentViewController.toggleCollapsingSection(_:)), for: .primaryActionTriggered)
+        
+        self.versionDescriptionTextView.maximumNumberOfLines = 3
+        self.versionDescriptionTextView.moreButton.addTarget(self, action: #selector(AppContentViewController.toggleCollapsingSection(_:)), for: .primaryActionTriggered)
+    }
+    
+    override func viewDidLayoutSubviews()
+    {
+        super.viewDidLayoutSubviews()
+        
+        guard var size = self.preferredScreenshotSize else { return }
+        size.height = min(size.height, self.screenshotsCollectionView.bounds.height) // Silence temporary "item too tall" warning.
+        
+        let layout = self.screenshotsCollectionView.collectionViewLayout as! UICollectionViewFlowLayout
+        layout.itemSize = size
+    }
+    
+    override func prepare(for segue: UIStoryboardSegue, sender: Any?)
+    {
+        guard segue.identifier == "showPermission" else { return }
+        
+        guard let cell = sender as? UICollectionViewCell, let indexPath = self.permissionsCollectionView.indexPath(for: cell) else { return }
+        
+        let permission = self.permissionsDataSource.item(at: indexPath)
+        
+        let maximumWidth = self.view.bounds.width - 20
+        
+        let permissionPopoverViewController = segue.destination as! PermissionPopoverViewController
+        permissionPopoverViewController.permission = permission
+        permissionPopoverViewController.view.widthAnchor.constraint(lessThanOrEqualToConstant: maximumWidth).isActive = true
+        
+        let size = permissionPopoverViewController.view.systemLayoutSizeFitting(UIView.layoutFittingCompressedSize)
+        permissionPopoverViewController.preferredContentSize = size
+        
+        permissionPopoverViewController.popoverPresentationController?.delegate = self
+        permissionPopoverViewController.popoverPresentationController?.sourceRect = cell.frame
+        permissionPopoverViewController.popoverPresentationController?.sourceView = self.permissionsCollectionView
+    }
+}
+
+private extension AppContentViewController
+{
+    func makeScreenshotsDataSource() -> RSTArrayCollectionViewPrefetchingDataSource<NSURL, UIImage>
+    {
+        let dataSource = RSTArrayCollectionViewPrefetchingDataSource<NSURL, UIImage>(items: self.app.screenshotURLs as [NSURL])
+        dataSource.cellConfigurationHandler = { (cell, screenshot, indexPath) in
+            let cell = cell as! ScreenshotCollectionViewCell
+            cell.imageView.image = nil
+            cell.imageView.isIndicatingActivity = true
+        }
+        dataSource.prefetchHandler = { (imageURL, indexPath, completionHandler) in
+            return RSTAsyncBlockOperation() { (operation) in
+                let request = ImageRequest(url: imageURL as URL, processor: .screenshot)
+                ImagePipeline.shared.loadImage(with: request, progress: nil, completion: { (response, error) in
+                    guard !operation.isCancelled else { return operation.finish() }
+                    
+                    if let image = response?.image
+                    {
+                        completionHandler(image, nil)
+                    }
+                    else
+                    {
+                        completionHandler(nil, error)
+                    }
+                })
+            }
+        }
+        dataSource.prefetchCompletionHandler = { (cell, image, indexPath, error) in
+            let cell = cell as! ScreenshotCollectionViewCell
+            cell.imageView.isIndicatingActivity = false
+            cell.imageView.image = image
+            
+            if let error = error
+            {
+                print("Error loading image:", error)
+            }
+        }
+        
+        return dataSource
+    }
+    
+    func makePermissionsDataSource() -> RSTArrayCollectionViewDataSource<AppPermission>
+    {        
+        let dataSource = RSTArrayCollectionViewDataSource(items: self.app.permissions)
+        dataSource.cellConfigurationHandler = { (cell, permission, indexPath) in
+            let cell = cell as! PermissionCollectionViewCell
+            cell.button.setImage(permission.type.icon, for: .normal)
+            cell.textLabel.text = permission.type.localizedShortName
+        }
+        
+        return dataSource
+    }
+}
+
+private extension AppContentViewController
+{
+    @objc func toggleCollapsingSection(_ sender: UIButton)
+    {
+        let indexPath: IndexPath
+        
+        switch sender
+        {
+        case self.descriptionTextView.moreButton: indexPath = IndexPath(row: Row.description.rawValue, section: 0)
+        case self.versionDescriptionTextView.moreButton: indexPath = IndexPath(row: Row.versionDescription.rawValue, section: 0)
+        default: return
+        }
+        
+        // Disable animations to prevent some potentially strange ones.
+        UIView.performWithoutAnimation {
+            self.tableView.reloadRows(at: [indexPath], with: .none)
+        }
+    }
+}
+
+extension AppContentViewController
+{
+    override func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath)
+    {
+        cell.tintColor = self.app.tintColor
+    }
+    
+    override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat
+    {
+        switch Row.allCases[indexPath.row]
+        {
+        case .screenshots:
+            guard let size = self.preferredScreenshotSize else { return 0.0 }
+            return size.height
+            
+        case .permissions:
+            guard !self.app.permissions.isEmpty else { return 0.0 }
+            return super.tableView(tableView, heightForRowAt: indexPath)
+            
+        default:
+            return super.tableView(tableView, heightForRowAt: indexPath)
+        }
+    }
+}
+
+extension AppContentViewController: UIPopoverPresentationControllerDelegate
+{
+    func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle
+    {
+        return .none
+    }
+}

AltStore/App Detail/AppContentViewControllerCells.swift

@@ -0,0 +1,43 @@
+//
+//  AppContentViewControllerCells.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/24/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class PermissionCollectionViewCell: UICollectionViewCell
+{
+    @IBOutlet var button: UIButton!
+    @IBOutlet var textLabel: UILabel!
+    
+    override func layoutSubviews()
+    {
+        super.layoutSubviews()
+        
+        self.button.layer.cornerRadius = self.button.bounds.midY
+    }
+    
+    override func tintColorDidChange()
+    {
+        super.tintColorDidChange()
+        
+        self.button.backgroundColor = self.tintColor.withAlphaComponent(0.15)
+        self.textLabel.textColor = self.tintColor
+    }
+}
+
+class AppContentTableViewCell: UITableViewCell
+{
+    override func systemLayoutSizeFitting(_ targetSize: CGSize, withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority, verticalFittingPriority: UILayoutPriority) -> CGSize
+    {
+        // Ensure cell is laid out so it will report correct size.
+        self.layoutIfNeeded()
+        
+        let size = super.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: horizontalFittingPriority, verticalFittingPriority: verticalFittingPriority)
+        
+        return size
+    }
+}

AltStore/App Detail/AppViewController.swift

@@ -0,0 +1,570 @@
+//
+//  AppViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/22/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import AltStoreCore
+import Roxas
+
+import Nuke
+
+class AppViewController: UIViewController
+{
+    var app: StoreApp!
+    
+    private var contentViewController: AppContentViewController!
+    private var contentViewControllerShadowView: UIView!
+    
+    private var blurAnimator: UIViewPropertyAnimator?
+    private var navigationBarAnimator: UIViewPropertyAnimator?
+    
+    private var contentSizeObservation: NSKeyValueObservation?
+    
+    @IBOutlet private var scrollView: UIScrollView!
+    @IBOutlet private var contentView: UIView!
+    
+    @IBOutlet private var bannerView: AppBannerView!
+    
+    @IBOutlet private var backButton: UIButton!
+    @IBOutlet private var backButtonContainerView: UIVisualEffectView!
+    
+    @IBOutlet private var backgroundAppIconImageView: UIImageView!
+    @IBOutlet private var backgroundBlurView: UIVisualEffectView!
+    
+    @IBOutlet private var navigationBarTitleView: UIView!
+    @IBOutlet private var navigationBarDownloadButton: PillButton!
+    @IBOutlet private var navigationBarAppIconImageView: UIImageView!
+    @IBOutlet private var navigationBarAppNameLabel: UILabel!
+    
+    private var _shouldResetLayout = false
+    private var _backgroundBlurEffect: UIBlurEffect?
+    private var _backgroundBlurTintColor: UIColor?
+    
+    private var _preferredStatusBarStyle: UIStatusBarStyle = .default
+    
+    override var preferredStatusBarStyle: UIStatusBarStyle {
+        return _preferredStatusBarStyle
+    }
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+                        
+        self.navigationBarTitleView.sizeToFit()
+        self.navigationItem.titleView = self.navigationBarTitleView
+        
+        self.contentViewControllerShadowView = UIView()
+        self.contentViewControllerShadowView.backgroundColor = .white
+        self.contentViewControllerShadowView.layer.cornerRadius = 38
+        self.contentViewControllerShadowView.layer.shadowColor = UIColor.black.cgColor
+        self.contentViewControllerShadowView.layer.shadowOffset = CGSize(width: 0, height: -1)
+        self.contentViewControllerShadowView.layer.shadowRadius = 10
+        self.contentViewControllerShadowView.layer.shadowOpacity = 0.3
+        self.contentViewController.view.superview?.insertSubview(self.contentViewControllerShadowView, at: 0)
+        
+        self.contentView.addGestureRecognizer(self.scrollView.panGestureRecognizer)
+        
+        self.contentViewController.view.layer.cornerRadius = 38
+        self.contentViewController.view.layer.masksToBounds = true
+        
+        self.contentViewController.tableView.panGestureRecognizer.require(toFail: self.scrollView.panGestureRecognizer)
+        self.contentViewController.tableView.showsVerticalScrollIndicator = false
+        
+        // Bring to front so the scroll indicators are visible.
+        self.view.bringSubviewToFront(self.scrollView)
+        self.scrollView.isUserInteractionEnabled = false
+        
+        self.bannerView.frame = CGRect(x: 0, y: 0, width: 300, height: 93)
+        self.bannerView.backgroundEffectView.effect = UIBlurEffect(style: .regular)
+        self.bannerView.backgroundEffectView.backgroundColor = .clear
+        self.bannerView.iconImageView.image = nil
+        self.bannerView.iconImageView.tintColor = self.app.tintColor
+        self.bannerView.button.tintColor = self.app.tintColor
+        self.bannerView.tintColor = self.app.tintColor
+        
+        self.bannerView.configure(for: self.app)
+        self.bannerView.accessibilityTraits.remove(.button)
+        
+        self.bannerView.button.addTarget(self, action: #selector(AppViewController.performAppAction(_:)), for: .primaryActionTriggered)
+        
+        self.backButtonContainerView.tintColor = self.app.tintColor
+        
+        self.navigationController?.navigationBar.tintColor = self.app.tintColor
+        self.navigationBarDownloadButton.tintColor = self.app.tintColor
+        self.navigationBarAppNameLabel.text = self.app.name
+        self.navigationBarAppIconImageView.tintColor = self.app.tintColor
+        
+        self.contentSizeObservation = self.contentViewController.tableView.observe(\.contentSize) { [weak self] (tableView, change) in
+            self?.view.setNeedsLayout()
+            self?.view.layoutIfNeeded()
+        }
+        
+        self.update()
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(AppViewController.didChangeApp(_:)), name: .NSManagedObjectContextObjectsDidChange, object: DatabaseManager.shared.viewContext)
+        NotificationCenter.default.addObserver(self, selector: #selector(AppViewController.willEnterForeground(_:)), name: UIApplication.willEnterForegroundNotification, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(AppViewController.didBecomeActive(_:)), name: UIApplication.didBecomeActiveNotification, object: nil)
+        
+        self._backgroundBlurEffect = self.backgroundBlurView.effect as? UIBlurEffect
+        self._backgroundBlurTintColor = self.backgroundBlurView.contentView.backgroundColor
+        
+        // Load Images
+        for imageView in [self.bannerView.iconImageView!, self.backgroundAppIconImageView!, self.navigationBarAppIconImageView!]
+        {
+            imageView.isIndicatingActivity = true
+            
+            Nuke.loadImage(with: self.app.iconURL, options: .shared, into: imageView, progress: nil) { [weak imageView] (response, error) in
+                if response?.image != nil
+                {
+                    imageView?.isIndicatingActivity = false
+                }
+            }
+        }
+    }
+    
+    override func viewWillAppear(_ animated: Bool)
+    {
+        super.viewWillAppear(animated)
+
+        self.prepareBlur()
+        
+        // Update blur immediately.
+        self.view.setNeedsLayout()
+        self.view.layoutIfNeeded()
+
+        self.transitionCoordinator?.animate(alongsideTransition: { (context) in
+            self.hideNavigationBar()
+        }, completion: nil)
+    }
+    
+    override func viewDidAppear(_ animated: Bool)
+    {
+        super.viewDidAppear(animated)
+        
+        self._shouldResetLayout = true
+        self.view.setNeedsLayout()
+        self.view.layoutIfNeeded()
+    }
+    
+    override func viewWillDisappear(_ animated: Bool)
+    {
+        super.viewWillDisappear(animated)
+
+        // Guard against "dismissing" when presenting via 3D Touch pop.
+        guard self.navigationController != nil else { return }
+
+        // Store reference since self.navigationController will be nil after disappearing.
+        let navigationController = self.navigationController
+        navigationController?.navigationBar.barStyle = .default // Don't animate, or else status bar might appear messed-up.
+
+        self.transitionCoordinator?.animate(alongsideTransition: { (context) in
+            self.showNavigationBar(for: navigationController)
+        }, completion: { (context) in
+            if !context.isCancelled
+            {
+                self.showNavigationBar(for: navigationController)
+            }
+        })
+    }
+    
+    override func viewDidDisappear(_ animated: Bool)
+    {
+        super.viewDidDisappear(animated)
+        
+        if self.navigationController == nil
+        {
+            self.resetNavigationBarAnimation()
+        }
+    }
+    
+    override func prepare(for segue: UIStoryboardSegue, sender: Any?)
+    {
+        guard segue.identifier == "embedAppContentViewController" else { return }
+        
+        self.contentViewController = segue.destination as? AppContentViewController
+        self.contentViewController.app = self.app
+        
+        if #available(iOS 15, *)
+        {
+            // Fix navigation bar + tab bar appearance on iOS 15.
+            self.setContentScrollView(self.scrollView)
+            self.navigationItem.scrollEdgeAppearance = self.navigationController?.navigationBar.standardAppearance
+        }
+    }
+    
+    override func viewDidLayoutSubviews()
+    {
+        super.viewDidLayoutSubviews()
+        
+        if self._shouldResetLayout
+        {
+            // Various events can cause UI to mess up, so reset affected components now.
+            
+            if self.navigationController?.topViewController == self
+            {
+                self.hideNavigationBar()
+            }
+            
+            self.prepareBlur()
+            
+            // Reset navigation bar animation, and create a new one later in this method if necessary.
+            self.resetNavigationBarAnimation()
+                        
+            self._shouldResetLayout = false
+        }
+        
+        let statusBarHeight = UIApplication.shared.statusBarFrame.height
+        let cornerRadius = self.contentViewControllerShadowView.layer.cornerRadius
+        
+        let inset = 12 as CGFloat
+        let padding = 20 as CGFloat
+        
+        let backButtonSize = self.backButton.sizeThatFits(CGSize(width: 1000, height: 1000))
+        var backButtonFrame = CGRect(x: inset, y: statusBarHeight,
+                                     width: backButtonSize.width + 20, height: backButtonSize.height + 20)
+        
+        var headerFrame = CGRect(x: inset, y: 0, width: self.view.bounds.width - inset * 2, height: self.bannerView.bounds.height)
+        var contentFrame = CGRect(x: 0, y: 0, width: self.view.bounds.width, height: self.view.bounds.height)
+        var backgroundIconFrame = CGRect(x: 0, y: 0, width: self.view.bounds.width, height: self.view.bounds.width)
+        
+        let minimumHeaderY = backButtonFrame.maxY + 8
+        
+        let minimumContentY = minimumHeaderY + headerFrame.height + padding
+        let maximumContentY = self.view.bounds.width * 0.667
+        
+        // A full blur is too much, so we reduce the visible blur by 0.3, resulting in 70% blur.
+        let minimumBlurFraction = 0.3 as CGFloat
+        
+        contentFrame.origin.y = maximumContentY - self.scrollView.contentOffset.y
+        headerFrame.origin.y = contentFrame.origin.y - padding - headerFrame.height
+        
+        // Stretch the app icon image to fill additional vertical space if necessary.
+        let height = max(contentFrame.origin.y + cornerRadius * 2, backgroundIconFrame.height)
+        backgroundIconFrame.size.height = height
+        
+        let blurThreshold = 0 as CGFloat
+        if self.scrollView.contentOffset.y < blurThreshold
+        {
+            // Determine how much to lessen blur by.
+            
+            let range = 75 as CGFloat
+            let difference = -self.scrollView.contentOffset.y
+            
+            let fraction = min(difference, range) / range
+            
+            let fractionComplete = (fraction * (1.0 - minimumBlurFraction)) + minimumBlurFraction
+            self.blurAnimator?.fractionComplete = fractionComplete
+        }
+        else
+        {
+            // Set blur to default.
+            
+            self.blurAnimator?.fractionComplete = minimumBlurFraction
+        }
+        
+        // Animate navigation bar.
+        let showNavigationBarThreshold = (maximumContentY - minimumContentY) + backButtonFrame.origin.y
+        if self.scrollView.contentOffset.y > showNavigationBarThreshold
+        {
+            if self.navigationBarAnimator == nil
+            {
+                self.prepareNavigationBarAnimation()
+            }
+            
+            let difference = self.scrollView.contentOffset.y - showNavigationBarThreshold
+            let range = (headerFrame.height + padding) - (self.navigationController?.navigationBar.bounds.height ?? self.view.safeAreaInsets.top)
+            
+            let fractionComplete = min(difference, range) / range
+            self.navigationBarAnimator?.fractionComplete = fractionComplete
+        }
+        else
+        {
+            self.resetNavigationBarAnimation()
+        }
+        
+        let beginMovingBackButtonThreshold = (maximumContentY - minimumContentY)
+        if self.scrollView.contentOffset.y > beginMovingBackButtonThreshold
+        {
+            let difference = self.scrollView.contentOffset.y - beginMovingBackButtonThreshold
+            backButtonFrame.origin.y -= difference
+        }
+        
+        let pinContentToTopThreshold = maximumContentY
+        if self.scrollView.contentOffset.y > pinContentToTopThreshold
+        {
+            contentFrame.origin.y = 0
+            backgroundIconFrame.origin.y = 0
+            
+            let difference = self.scrollView.contentOffset.y - pinContentToTopThreshold
+            self.contentViewController.tableView.contentOffset.y = difference
+        }
+        else
+        {
+            // Keep content table view's content offset at the top.
+            self.contentViewController.tableView.contentOffset.y = 0
+        }
+
+        // Keep background app icon centered in gap between top of content and top of screen.
+        backgroundIconFrame.origin.y = (contentFrame.origin.y / 2) - backgroundIconFrame.height / 2
+        
+        // Set frames.
+        self.contentViewController.view.superview?.frame = contentFrame
+        self.bannerView.frame = headerFrame
+        self.backgroundAppIconImageView.frame = backgroundIconFrame
+        self.backgroundBlurView.frame = backgroundIconFrame
+        self.backButtonContainerView.frame = backButtonFrame
+        
+        self.contentViewControllerShadowView.frame = self.contentViewController.view.frame
+        
+        self.backButtonContainerView.layer.cornerRadius = self.backButtonContainerView.bounds.midY
+        
+        self.scrollView.scrollIndicatorInsets.top = statusBarHeight
+        
+        // Adjust content offset + size.
+        let contentOffset = self.scrollView.contentOffset
+        
+        var contentSize = self.contentViewController.tableView.contentSize
+        contentSize.height += maximumContentY
+        
+        self.scrollView.contentSize = contentSize
+        self.scrollView.contentOffset = contentOffset
+        
+        self.bannerView.backgroundEffectView.backgroundColor = .clear
+    }
+    
+    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?)
+    {
+        super.traitCollectionDidChange(previousTraitCollection)
+        self._shouldResetLayout = true
+    }
+    
+    deinit
+    {
+        self.blurAnimator?.stopAnimation(true)
+        self.navigationBarAnimator?.stopAnimation(true)
+    }
+}
+
+extension AppViewController
+{
+    class func makeAppViewController(app: StoreApp) -> AppViewController
+    {
+        let storyboard = UIStoryboard(name: "Main", bundle: nil)
+        
+        let appViewController = storyboard.instantiateViewController(withIdentifier: "appViewController") as! AppViewController
+        appViewController.app = app
+        return appViewController
+    }
+}
+
+private extension AppViewController
+{
+    func update()
+    {
+        for button in [self.bannerView.button!, self.navigationBarDownloadButton!]
+        {
+            button.tintColor = self.app.tintColor
+            button.isIndicatingActivity = false
+            
+            if self.app.installedApp == nil
+            {
+                button.setTitle(NSLocalizedString("FREE", comment: ""), for: .normal)
+            }
+            else
+            {
+                button.setTitle(NSLocalizedString("OPEN", comment: ""), for: .normal)
+            }
+            
+            let progress = AppManager.shared.installationProgress(for: self.app)
+            button.progress = progress
+        }
+        
+        if Date() < self.app.versionDate
+        {
+            self.bannerView.button.countdownDate = self.app.versionDate
+            self.navigationBarDownloadButton.countdownDate = self.app.versionDate
+        }
+        else
+        {
+            self.bannerView.button.countdownDate = nil
+            self.navigationBarDownloadButton.countdownDate = nil
+        }
+        
+        let barButtonItem = self.navigationItem.rightBarButtonItem
+        self.navigationItem.rightBarButtonItem = nil
+        self.navigationItem.rightBarButtonItem = barButtonItem
+    }
+    
+    func showNavigationBar(for navigationController: UINavigationController? = nil)
+    {
+        let navigationController = navigationController ?? self.navigationController
+        navigationController?.navigationBar.alpha = 1.0
+        navigationController?.navigationBar.tintColor = .altPrimary
+        navigationController?.navigationBar.setNeedsLayout()
+        
+        if self.traitCollection.userInterfaceStyle == .dark
+        {
+            self._preferredStatusBarStyle = .lightContent
+        }
+        else
+        {
+            self._preferredStatusBarStyle = .default
+        }
+        
+        navigationController?.setNeedsStatusBarAppearanceUpdate()
+    }
+    
+    func hideNavigationBar(for navigationController: UINavigationController? = nil)
+    {
+        let navigationController = navigationController ?? self.navigationController
+        navigationController?.navigationBar.alpha = 0.0
+        
+        self._preferredStatusBarStyle = .lightContent
+        navigationController?.setNeedsStatusBarAppearanceUpdate()
+    }
+    
+    func prepareBlur()
+    {
+        if let animator = self.blurAnimator
+        {
+            animator.stopAnimation(true)
+        }
+        
+        self.backgroundBlurView.effect = self._backgroundBlurEffect
+        self.backgroundBlurView.contentView.backgroundColor = self._backgroundBlurTintColor
+        
+        self.blurAnimator = UIViewPropertyAnimator(duration: 1.0, curve: .linear) { [weak self] in
+            self?.backgroundBlurView.effect = nil
+            self?.backgroundBlurView.contentView.backgroundColor = .clear
+        }
+
+        self.blurAnimator?.startAnimation()
+        self.blurAnimator?.pauseAnimation()
+    }
+    
+    func prepareNavigationBarAnimation()
+    {
+        self.resetNavigationBarAnimation()
+        
+        self.navigationBarAnimator = UIViewPropertyAnimator(duration: 1.0, curve: .linear) { [weak self] in
+            self?.showNavigationBar()
+            self?.navigationController?.navigationBar.tintColor = self?.app.tintColor
+            self?.navigationController?.navigationBar.barTintColor = nil
+            self?.contentViewController.view.layer.cornerRadius = 0
+        }
+        
+        self.navigationBarAnimator?.startAnimation()
+        self.navigationBarAnimator?.pauseAnimation()
+        
+        self.update()
+    }
+    
+    func resetNavigationBarAnimation()
+    {
+        self.navigationBarAnimator?.stopAnimation(true)
+        self.navigationBarAnimator = nil
+        
+        self.hideNavigationBar()
+        
+        self.contentViewController.view.layer.cornerRadius = self.contentViewControllerShadowView.layer.cornerRadius
+    }
+}
+
+extension AppViewController
+{
+    @IBAction func popViewController(_ sender: UIButton)
+    {
+        self.navigationController?.popViewController(animated: true)
+    }
+    
+    @IBAction func performAppAction(_ sender: PillButton)
+    {
+        if let installedApp = self.app.installedApp
+        {
+            self.open(installedApp)
+        }
+        else
+        {
+            self.downloadApp()
+        }
+    }
+    
+    func downloadApp()
+    {
+        guard self.app.installedApp == nil else { return }
+        
+        let group = AppManager.shared.install(self.app, presentingViewController: self) { (result) in
+            do
+            {
+                _ = try result.get()
+            }
+            catch OperationError.cancelled
+            {
+                // Ignore
+            }
+            catch
+            {
+                DispatchQueue.main.async {
+                    let toastView = ToastView(error: error)
+                    toastView.show(in: self)
+                }
+            }
+            
+            DispatchQueue.main.async {
+                self.bannerView.button.progress = nil
+                self.navigationBarDownloadButton.progress = nil
+                self.update()
+            }
+        }
+        
+        self.bannerView.button.progress = group.progress
+        self.navigationBarDownloadButton.progress = group.progress
+    }
+    
+    func open(_ installedApp: InstalledApp)
+    {
+        UIApplication.shared.open(installedApp.openAppURL)
+    }
+}
+
+private extension AppViewController
+{
+    @objc func didChangeApp(_ notification: Notification)
+    {
+        // Async so that AppManager.installationProgress(for:) is nil when we update.
+        DispatchQueue.main.async {
+            self.update()
+        }
+    }
+    
+    @objc func willEnterForeground(_ notification: Notification)
+    {
+        guard let navigationController = self.navigationController, navigationController.topViewController == self else { return }
+        
+        self._shouldResetLayout = true
+        self.view.setNeedsLayout()
+    }
+    
+    @objc func didBecomeActive(_ notification: Notification)
+    {
+        guard let navigationController = self.navigationController, navigationController.topViewController == self else { return }
+        
+        // Fixes Navigation Bar appearing after app becomes inactive -> active again.
+        self._shouldResetLayout = true
+        self.view.setNeedsLayout()
+    }
+}
+
+extension AppViewController: UIScrollViewDelegate
+{
+    func scrollViewDidScroll(_ scrollView: UIScrollView)
+    {
+        self.view.setNeedsLayout()
+        self.view.layoutIfNeeded()
+    }
+}

AltStore/App Detail/PermissionPopoverViewController.swift

@@ -0,0 +1,27 @@
+//
+//  PermissionPopoverViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/23/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import AltStoreCore
+
+class PermissionPopoverViewController: UIViewController
+{
+    var permission: AppPermission!
+    
+    @IBOutlet private var nameLabel: UILabel!
+    @IBOutlet private var descriptionLabel: UILabel!
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+        
+        self.nameLabel.text = self.permission.type.localizedName
+        self.descriptionLabel.text = self.permission.usageDescription
+    }
+}

AltStore/App IDs/AppIDsViewController.swift

@@ -0,0 +1,241 @@
+//
+//  AppIDsViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 1/27/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import AltStoreCore
+import Roxas
+
+class AppIDsViewController: UICollectionViewController
+{
+    private lazy var dataSource = self.makeDataSource()
+    
+    private var didInitialFetch = false
+    private var isLoading = false {
+        didSet {
+            self.update()
+        }
+    }
+    
+    @IBOutlet var activityIndicatorBarButtonItem: UIBarButtonItem!
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+        
+        self.collectionView.dataSource = self.dataSource
+        
+        self.activityIndicatorBarButtonItem.isIndicatingActivity = true
+        
+        let refreshControl = UIRefreshControl()
+        refreshControl.addTarget(self, action: #selector(AppIDsViewController.fetchAppIDs), for: .primaryActionTriggered)
+        self.collectionView.refreshControl = refreshControl
+    }
+    
+    override func viewWillAppear(_ animated: Bool)
+    {
+        super.viewWillAppear(animated)
+        
+        if !self.didInitialFetch
+        {
+            self.fetchAppIDs()
+        }
+    }
+}
+
+private extension AppIDsViewController
+{
+    func makeDataSource() -> RSTFetchedResultsCollectionViewDataSource<AppID>
+    {
+        let fetchRequest = AppID.fetchRequest() as NSFetchRequest<AppID>
+        fetchRequest.sortDescriptors = [NSSortDescriptor(keyPath: \AppID.name, ascending: true),
+                                        NSSortDescriptor(keyPath: \AppID.bundleIdentifier, ascending: true),
+                                        NSSortDescriptor(keyPath: \AppID.expirationDate, ascending: true)]
+        fetchRequest.returnsObjectsAsFaults = false
+        
+        if let team = DatabaseManager.shared.activeTeam()
+        {
+            fetchRequest.predicate = NSPredicate(format: "%K == %@", #keyPath(AppID.team), team)
+        }
+        else
+        {
+            fetchRequest.predicate = NSPredicate(value: false)
+        }
+        
+        let dataSource = RSTFetchedResultsCollectionViewDataSource<AppID>(fetchRequest: fetchRequest, managedObjectContext: DatabaseManager.shared.viewContext)
+        dataSource.proxy = self
+        dataSource.cellConfigurationHandler = { (cell, appID, indexPath) in
+            let tintColor = UIColor.altPrimary
+            
+            let cell = cell as! BannerCollectionViewCell
+            cell.layoutMargins.left = self.view.layoutMargins.left
+            cell.layoutMargins.right = self.view.layoutMargins.right
+            cell.tintColor = tintColor
+                        
+            cell.bannerView.iconImageView.isHidden = true
+            cell.bannerView.button.isIndicatingActivity = false
+            
+            cell.bannerView.buttonLabel.text = NSLocalizedString("Expires in", comment: "")
+            
+            let attributedAccessibilityLabel = NSMutableAttributedString(string: appID.name + ". ")
+            
+            if let expirationDate = appID.expirationDate
+            {
+                cell.bannerView.button.isHidden = false
+                cell.bannerView.button.isUserInteractionEnabled = false
+                
+                cell.bannerView.buttonLabel.isHidden = false
+                
+                let currentDate = Date()
+                
+                let numberOfDays = expirationDate.numberOfCalendarDays(since: currentDate)
+                let numberOfDaysText = (numberOfDays == 1) ? NSLocalizedString("1 day", comment: "") : String(format: NSLocalizedString("%@ days", comment: ""), NSNumber(value: numberOfDays))
+                cell.bannerView.button.setTitle(numberOfDaysText.uppercased(), for: .normal)
+                
+                attributedAccessibilityLabel.mutableString.append(String(format: NSLocalizedString("Expires in %@.", comment: ""), numberOfDaysText) + " ")
+            }
+            else
+            {
+                cell.bannerView.button.isHidden = true
+                cell.bannerView.button.isUserInteractionEnabled = true
+                
+                cell.bannerView.buttonLabel.isHidden = true
+            }
+                                                
+            cell.bannerView.titleLabel.text = appID.name
+            cell.bannerView.subtitleLabel.text = appID.bundleIdentifier
+            cell.bannerView.subtitleLabel.numberOfLines = 2
+            
+            let attributedBundleIdentifier = NSMutableAttributedString(string: appID.bundleIdentifier.lowercased(), attributes: [.accessibilitySpeechPunctuation: true])
+            
+            if let team = appID.team, let range = attributedBundleIdentifier.string.range(of: team.identifier.lowercased()), #available(iOS 13, *)
+            {
+                // Prefer to speak the team ID one character at a time.
+                let nsRange = NSRange(range, in: attributedBundleIdentifier.string)
+                attributedBundleIdentifier.addAttributes([.accessibilitySpeechSpellOut: true], range: nsRange)
+            }
+            
+            attributedAccessibilityLabel.append(attributedBundleIdentifier)
+            cell.bannerView.accessibilityAttributedLabel = attributedAccessibilityLabel
+            
+            // Make sure refresh button is correct size.
+            cell.layoutIfNeeded()
+        }
+        
+        return dataSource
+    }
+    
+    @objc func fetchAppIDs()
+    {
+        guard !self.isLoading else { return }
+        self.isLoading = true
+        
+        AppManager.shared.fetchAppIDs { (result) in
+            do
+            {
+                let (_, context) = try result.get()
+                try context.save()
+            }
+            catch
+            {
+                DispatchQueue.main.async {
+                    let toastView = ToastView(error: error)
+                    toastView.show(in: self)
+                }
+            }
+            
+            DispatchQueue.main.async {
+                self.isLoading = false
+            }
+        }
+    }
+    
+    func update()
+    {
+        if !self.isLoading
+        {
+            self.collectionView.refreshControl?.endRefreshing()
+            self.activityIndicatorBarButtonItem.isIndicatingActivity = false
+        }
+    }
+}
+
+extension AppIDsViewController: UICollectionViewDelegateFlowLayout
+{
+    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
+    {
+        return CGSize(width: collectionView.bounds.width, height: 80)
+    }
+    
+    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize
+    {
+        let indexPath = IndexPath(row: 0, section: section)
+        let headerView = self.collectionView(collectionView, viewForSupplementaryElementOfKind: UICollectionView.elementKindSectionHeader, at: indexPath)
+        
+        // Use this view to calculate the optimal size based on the collection view's width
+        let size = headerView.systemLayoutSizeFitting(CGSize(width: collectionView.frame.width, height: UIView.layoutFittingExpandedSize.height),
+                                                      withHorizontalFittingPriority: .required, // Width is fixed
+                                                      verticalFittingPriority: .fittingSizeLevel) // Height can be as large as needed
+        return size
+    }
+    
+    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForFooterInSection section: Int) -> CGSize
+    {
+        return CGSize(width: collectionView.bounds.width, height: 50)
+    }
+    
+    override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView
+    {
+        switch kind
+        {
+        case UICollectionView.elementKindSectionHeader:
+            let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "Header", for: indexPath) as! TextCollectionReusableView
+            headerView.layoutMargins.left = self.view.layoutMargins.left
+            headerView.layoutMargins.right = self.view.layoutMargins.right
+            
+            if let activeTeam = DatabaseManager.shared.activeTeam(), activeTeam.type == .free
+            {
+                let text = NSLocalizedString("""
+                Each app and app extension installed with AltStore must register an App ID with Apple. Apple limits non-developer Apple IDs to 10 App IDs at a time.
+
+                **App IDs can't be deleted**, but they do expire after one week. AltStore will automatically renew App IDs for all active apps once they've expired.
+                """, comment: "")
+                
+                let attributedText = NSAttributedString(markdownRepresentation: text, attributes: [.font: headerView.textLabel.font as Any])
+                headerView.textLabel.attributedText = attributedText
+            }
+            else
+            {
+                headerView.textLabel.text = NSLocalizedString("""
+                Each app and app extension installed with AltStore must register an App ID with Apple.
+                
+                App IDs for paid developer accounts never expire, and there is no limit to how many you can create.
+                """, comment: "")
+            }
+            
+            return headerView
+            
+        case UICollectionView.elementKindSectionFooter:
+            let footerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "Footer", for: indexPath) as! TextCollectionReusableView
+            
+            let count = self.dataSource.itemCount
+            if count == 1
+            {
+                footerView.textLabel.text = NSLocalizedString("1 App ID", comment: "")
+            }
+            else
+            {
+                footerView.textLabel.text = String(format: NSLocalizedString("%@ App IDs", comment: ""), NSNumber(value: count))
+            }
+            
+            return footerView
+            
+        default: fatalError()
+        }
+    }
+}

AltStore/AppDelegate.swift

@@ -0,0 +1,405 @@
+//
+//  AppDelegate.swift
+//  AltStore
+//
+//  Created by Riley Testut on 5/9/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+import UserNotifications
+import AVFoundation
+import Intents
+
+import AltStoreCore
+import AltSign
+import Roxas
+
+extension AppDelegate
+{
+    static let openPatreonSettingsDeepLinkNotification = Notification.Name("com.rileytestut.AltStore.OpenPatreonSettingsDeepLinkNotification")
+    static let importAppDeepLinkNotification = Notification.Name("com.rileytestut.AltStore.ImportAppDeepLinkNotification")
+    static let addSourceDeepLinkNotification = Notification.Name("com.rileytestut.AltStore.AddSourceDeepLinkNotification")
+    
+    static let appBackupDidFinish = Notification.Name("com.rileytestut.AltStore.AppBackupDidFinish")
+    
+    static let importAppDeepLinkURLKey = "fileURL"
+    static let appBackupResultKey = "result"
+    static let addSourceDeepLinkURLKey = "sourceURL"
+}
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+
+    var window: UIWindow?
+    
+    @available(iOS 14, *)
+    private lazy var intentHandler = IntentHandler()
+    
+    @available(iOS 14, *)
+    private lazy var viewAppIntentHandler = ViewAppIntentHandler()
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool
+    {
+        // Register default settings before doing anything else.
+        UserDefaults.registerDefaults()
+        
+        DatabaseManager.shared.start { (error) in
+            if let error = error
+            {
+                print("Failed to start DatabaseManager. Error:", error as Any)
+            }
+            else
+            {
+                print("Started DatabaseManager.")
+            }
+        }
+        
+        AnalyticsManager.shared.start()
+        
+        self.setTintColor()
+        
+        ServerManager.shared.startDiscovering()
+        
+        SecureValueTransformer.register()        
+        
+        if UserDefaults.standard.firstLaunch == nil
+        {
+            Keychain.shared.reset()
+            UserDefaults.standard.firstLaunch = Date()
+        }
+        
+        UserDefaults.standard.preferredServerID = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.serverID) as? String
+        
+        #if DEBUG || BETA
+        UserDefaults.standard.isDebugModeEnabled = true
+        #endif
+        
+        self.prepareForBackgroundFetch()
+        
+        return true
+    }
+    
+    func applicationDidEnterBackground(_ application: UIApplication)
+    {
+        ServerManager.shared.stopDiscovering()
+    }
+
+    func applicationWillEnterForeground(_ application: UIApplication)
+    {
+        AppManager.shared.update()
+        ServerManager.shared.startDiscovering()
+        
+        PatreonAPI.shared.refreshPatreonAccount()
+    }
+    
+    func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any]) -> Bool
+    {
+        return self.open(url)
+    }
+    
+    func application(_ application: UIApplication, handlerFor intent: INIntent) -> Any?
+    {
+        guard #available(iOS 14, *) else { return nil }
+        
+        switch intent
+        {
+        case is RefreshAllIntent: return self.intentHandler
+        case is ViewAppIntent: return self.viewAppIntentHandler
+        default: return nil
+        }
+    }
+}
+
+@available(iOS 13, *)
+extension AppDelegate
+{
+    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration
+    {
+        // Called when a new scene session is being created.
+        // Use this method to select a configuration to create the new scene with.
+        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
+    }
+    
+    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>)
+    {
+        // Called when the user discards a scene session.
+        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
+        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
+    }
+}
+
+private extension AppDelegate
+{
+    func setTintColor()
+    {
+        self.window?.tintColor = .altPrimary
+    }
+    
+    func open(_ url: URL) -> Bool
+    {
+        if url.isFileURL
+        {
+            guard url.pathExtension.lowercased() == "ipa" else { return false }
+            
+            DispatchQueue.main.async {
+                NotificationCenter.default.post(name: AppDelegate.importAppDeepLinkNotification, object: nil, userInfo: [AppDelegate.importAppDeepLinkURLKey: url])
+            }
+            
+            return true
+        }
+        else
+        {
+            guard let components = URLComponents(url: url, resolvingAgainstBaseURL: false) else { return false }
+            guard let host = components.host?.lowercased() else { return false }
+            
+            switch host
+            {
+            case "patreon":
+                DispatchQueue.main.async {
+                    NotificationCenter.default.post(name: AppDelegate.openPatreonSettingsDeepLinkNotification, object: nil)
+                }
+                
+                return true
+                
+            case "appbackupresponse":
+                let result: Result<Void, Error>
+                
+                switch url.path.lowercased()
+                {
+                case "/success": result = .success(())
+                case "/failure":
+                    let queryItems = components.queryItems?.reduce(into: [String: String]()) { $0[$1.name] = $1.value } ?? [:]
+                    guard
+                        let errorDomain = queryItems["errorDomain"],
+                        let errorCodeString = queryItems["errorCode"], let errorCode = Int(errorCodeString),
+                        let errorDescription = queryItems["errorDescription"]
+                    else { return false }
+                    
+                    let error = NSError(domain: errorDomain, code: errorCode, userInfo: [NSLocalizedDescriptionKey: errorDescription])
+                    result = .failure(error)
+                    
+                default: return false
+                }
+                
+                NotificationCenter.default.post(name: AppDelegate.appBackupDidFinish, object: nil, userInfo: [AppDelegate.appBackupResultKey: result])
+                
+                return true
+                
+            case "install":
+                let queryItems = components.queryItems?.reduce(into: [String: String]()) { $0[$1.name.lowercased()] = $1.value } ?? [:]
+                guard let downloadURLString = queryItems["url"], let downloadURL = URL(string: downloadURLString) else { return false }
+                
+                DispatchQueue.main.async {
+                    NotificationCenter.default.post(name: AppDelegate.importAppDeepLinkNotification, object: nil, userInfo: [AppDelegate.importAppDeepLinkURLKey: downloadURL])
+                }
+                
+                return true
+            
+            case "source":
+                let queryItems = components.queryItems?.reduce(into: [String: String]()) { $0[$1.name.lowercased()] = $1.value } ?? [:]
+                guard let sourceURLString = queryItems["url"], let sourceURL = URL(string: sourceURLString) else { return false }
+                
+                DispatchQueue.main.async {
+                    NotificationCenter.default.post(name: AppDelegate.addSourceDeepLinkNotification, object: nil, userInfo: [AppDelegate.addSourceDeepLinkURLKey: sourceURL])
+                }
+                
+                return true
+                
+            default: return false
+            }
+        }
+    }
+}
+
+extension AppDelegate
+{
+    private func prepareForBackgroundFetch()
+    {
+        // "Fetch" every hour, but then refresh only those that need to be refreshed (so we don't drain the battery).
+        UIApplication.shared.setMinimumBackgroundFetchInterval(1 * 60 * 60)
+        
+        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { (success, error) in
+        }
+        
+        #if DEBUG
+        UIApplication.shared.registerForRemoteNotifications()
+        #endif
+    }
+    
+    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data)
+    {
+        let tokenParts = deviceToken.map { data -> String in
+            return String(format: "%02.2hhx", data)
+        }
+        
+        let token = tokenParts.joined()
+        print("Push Token:", token)
+    }
+    
+    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void)
+    {
+        self.application(application, performFetchWithCompletionHandler: completionHandler)
+    }
+    
+    func application(_ application: UIApplication, performFetchWithCompletionHandler backgroundFetchCompletionHandler: @escaping (UIBackgroundFetchResult) -> Void)
+    {
+        if UserDefaults.standard.isBackgroundRefreshEnabled && !UserDefaults.standard.presentedLaunchReminderNotification
+        {
+            let threeHours: TimeInterval = 3 * 60 * 60
+            let trigger = UNTimeIntervalNotificationTrigger(timeInterval: threeHours, repeats: false)
+            
+            let content = UNMutableNotificationContent()
+            content.title = NSLocalizedString("App Refresh Tip", comment: "")
+            content.body = NSLocalizedString("The more you open AltStore, the more chances it's given to refresh apps in the background.", comment: "")
+            
+            let request = UNNotificationRequest(identifier: "background-refresh-reminder5", content: content, trigger: trigger)
+            UNUserNotificationCenter.current().add(request)
+            
+            UserDefaults.standard.presentedLaunchReminderNotification = true
+        }
+        
+        BackgroundTaskManager.shared.performExtendedBackgroundTask { (taskResult, taskCompletionHandler) in
+            if let error = taskResult.error
+            {
+                print("Error starting extended background task. Aborting.", error)
+                backgroundFetchCompletionHandler(.failed)
+                taskCompletionHandler()
+                return
+            }
+            
+            if !DatabaseManager.shared.isStarted
+            {
+                DatabaseManager.shared.start() { (error) in
+                    if error != nil
+                    {
+                        backgroundFetchCompletionHandler(.failed)
+                        taskCompletionHandler()
+                    }
+                    else
+                    {
+                        self.performBackgroundFetch { (backgroundFetchResult) in
+                            backgroundFetchCompletionHandler(backgroundFetchResult)
+                        } refreshAppsCompletionHandler: { (refreshAppsResult) in
+                            taskCompletionHandler()
+                        }
+                    }
+                }
+            }
+            else
+            {
+                self.performBackgroundFetch { (backgroundFetchResult) in
+                    backgroundFetchCompletionHandler(backgroundFetchResult)
+                } refreshAppsCompletionHandler: { (refreshAppsResult) in
+                    taskCompletionHandler()
+                }
+            }
+        }
+    }
+    
+    func performBackgroundFetch(backgroundFetchCompletionHandler: @escaping (UIBackgroundFetchResult) -> Void,
+                                refreshAppsCompletionHandler: @escaping (Result<[String: Result<InstalledApp, Error>], Error>) -> Void)
+    {
+        self.fetchSources { (result) in
+            switch result
+            {
+            case .failure: backgroundFetchCompletionHandler(.failed)
+            case .success: backgroundFetchCompletionHandler(.newData)
+            }
+            
+            if !UserDefaults.standard.isBackgroundRefreshEnabled
+            {
+                refreshAppsCompletionHandler(.success([:]))
+            }
+        }
+        
+        guard UserDefaults.standard.isBackgroundRefreshEnabled else { return }
+        
+        DatabaseManager.shared.persistentContainer.performBackgroundTask { (context) in
+            let installedApps = InstalledApp.fetchAppsForBackgroundRefresh(in: context)
+            AppManager.shared.backgroundRefresh(installedApps, completionHandler: refreshAppsCompletionHandler)
+        }
+    }
+}
+
+private extension AppDelegate
+{
+    func fetchSources(completionHandler: @escaping (Result<Set<Source>, Error>) -> Void)
+    {
+        AppManager.shared.fetchSources() { (result) in
+            do
+            {
+                let (sources, context) = try result.get()
+                
+                let previousUpdatesFetchRequest = InstalledApp.updatesFetchRequest() as! NSFetchRequest<NSFetchRequestResult>
+                previousUpdatesFetchRequest.includesPendingChanges = false
+                previousUpdatesFetchRequest.resultType = .dictionaryResultType
+                previousUpdatesFetchRequest.propertiesToFetch = [#keyPath(InstalledApp.bundleIdentifier)]
+                
+                let previousNewsItemsFetchRequest = NewsItem.fetchRequest() as NSFetchRequest<NSFetchRequestResult>
+                previousNewsItemsFetchRequest.includesPendingChanges = false
+                previousNewsItemsFetchRequest.resultType = .dictionaryResultType
+                previousNewsItemsFetchRequest.propertiesToFetch = [#keyPath(NewsItem.identifier)]
+                
+                let previousUpdates = try context.fetch(previousUpdatesFetchRequest) as! [[String: String]]
+                let previousNewsItems = try context.fetch(previousNewsItemsFetchRequest) as! [[String: String]]
+                
+                try context.save()
+                
+                let updatesFetchRequest = InstalledApp.updatesFetchRequest()
+                let newsItemsFetchRequest = NewsItem.fetchRequest() as NSFetchRequest<NewsItem>
+                
+                let updates = try context.fetch(updatesFetchRequest)
+                let newsItems = try context.fetch(newsItemsFetchRequest)
+                
+                for update in updates
+                {
+                    guard !previousUpdates.contains(where: { $0[#keyPath(InstalledApp.bundleIdentifier)] == update.bundleIdentifier }) else { continue }
+                    guard let storeApp = update.storeApp else { continue }
+                    
+                    let content = UNMutableNotificationContent()
+                    content.title = NSLocalizedString("New Update Available", comment: "")
+                    content.body = String(format: NSLocalizedString("%@ %@ is now available for download.", comment: ""), update.name, storeApp.version)
+                    content.sound = .default
+                    
+                    let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: nil)
+                    UNUserNotificationCenter.current().add(request)
+                }
+                
+                for newsItem in newsItems
+                {
+                    guard !previousNewsItems.contains(where: { $0[#keyPath(NewsItem.identifier)] == newsItem.identifier }) else { continue }
+                    guard !newsItem.isSilent else { continue }
+                    
+                    let content = UNMutableNotificationContent()
+                    
+                    if let app = newsItem.storeApp
+                    {
+                        content.title = String(format: NSLocalizedString("%@ News", comment: ""), app.name)
+                    }
+                    else
+                    {
+                        content.title = NSLocalizedString("AltStore News", comment: "")
+                    }
+                    
+                    content.body = newsItem.title
+                    content.sound = .default
+                    
+                    let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: nil)
+                    UNUserNotificationCenter.current().add(request)
+                }
+
+                DispatchQueue.main.async {
+                    UIApplication.shared.applicationIconBadgeNumber = updates.count
+                }
+                
+                completionHandler(.success(sources))
+            }
+            catch
+            {
+                print("Error fetching apps:", error)
+                completionHandler(.failure(error))
+            }
+        }
+    }
+}

AltStore/Authentication/Authentication.storyboard

@@ -0,0 +1,511 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="20037" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+    <device id="retina4_7" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="20020"/>
+        <capability name="Named colors" minToolsVersion="9.0"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--Navigation Controller-->
+        <scene sceneID="lNR-II-WoW">
+            <objects>
+                <navigationController storyboardIdentifier="navigationController" id="ZTo-53-dSL" sceneMemberID="viewController">
+                    <navigationBar key="navigationBar" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" barStyle="black" largeTitles="YES" id="Aej-RF-PfV" customClass="NavigationBar" customModule="AltStore" customModuleProvider="target">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="96"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                        <color key="tintColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        <color key="barTintColor" name="SettingsBackground"/>
+                        <textAttributes key="titleTextAttributes">
+                            <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        </textAttributes>
+                        <textAttributes key="largeTitleTextAttributes">
+                            <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        </textAttributes>
+                        <userDefinedRuntimeAttributes>
+                            <userDefinedRuntimeAttribute type="boolean" keyPath="automaticallyAdjustsItemPositions" value="NO"/>
+                        </userDefinedRuntimeAttributes>
+                    </navigationBar>
+                </navigationController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="9J6-jc-46k" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="-164" y="735"/>
+        </scene>
+        <!--Authentication View Controller-->
+        <scene sceneID="OCd-xc-Ms7">
+            <objects>
+                <viewController storyboardIdentifier="authenticationViewController" id="yO1-iT-7NP" customClass="AuthenticationViewController" customModule="AltStore" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="mjy-4S-hyH">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <view hidden="YES" userInteractionEnabled="NO" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="oyW-Fd-ojD" userLabel="Sizing View">
+                                <rect key="frame" x="0.0" y="44" width="375" height="623"/>
+                            </view>
+                            <scrollView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" alwaysBounceVertical="YES" indicatorStyle="white" keyboardDismissMode="onDrag" translatesAutoresizingMaskIntoConstraints="NO" id="WXx-hX-AXv">
+                                <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                                <subviews>
+                                    <view contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" translatesAutoresizingMaskIntoConstraints="NO" id="2wp-qG-f0Z">
+                                        <rect key="frame" x="0.0" y="0.0" width="375" height="623"/>
+                                        <subviews>
+                                            <stackView opaque="NO" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" axis="vertical" spacing="50" translatesAutoresizingMaskIntoConstraints="NO" id="YmX-7v-pxh">
+                                                <rect key="frame" x="16" y="6" width="343" height="359.5"/>
+                                                <subviews>
+                                                    <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" alignment="top" spacing="6" translatesAutoresizingMaskIntoConstraints="NO" id="Yfu-hI-0B7" userLabel="Welcome">
+                                                        <rect key="frame" x="0.0" y="0.0" width="343" height="67.5"/>
+                                                        <subviews>
+                                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Welcome to AltStore." textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="EI2-V3-zQZ">
+                                                                <rect key="frame" x="0.0" y="0.0" width="332" height="41"/>
+                                                                <fontDescription key="fontDescription" type="boldSystem" pointSize="34"/>
+                                                                <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                <nil key="highlightedColor"/>
+                                                            </label>
+                                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Sign in with your Apple ID to get started." textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="SNU-tv-8Au">
+                                                                <rect key="frame" x="0.0" y="47" width="306.5" height="20.5"/>
+                                                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                                                <color key="textColor" white="1" alpha="0.59999999999999998" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                <nil key="highlightedColor"/>
+                                                            </label>
+                                                        </subviews>
+                                                    </stackView>
+                                                    <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="32" translatesAutoresizingMaskIntoConstraints="NO" id="Aqh-MD-HFf">
+                                                        <rect key="frame" x="0.0" y="117.5" width="343" height="242"/>
+                                                        <subviews>
+                                                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="15" translatesAutoresizingMaskIntoConstraints="NO" id="Oy6-xr-cZ7">
+                                                                <rect key="frame" x="0.0" y="0.0" width="343" height="159"/>
+                                                                <subviews>
+                                                                    <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="4" translatesAutoresizingMaskIntoConstraints="NO" id="H95-7V-Kk8" userLabel="Apple ID">
+                                                                        <rect key="frame" x="0.0" y="0.0" width="343" height="72"/>
+                                                                        <subviews>
+                                                                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" translatesAutoresizingMaskIntoConstraints="NO" id="KN1-Kp-M1q">
+                                                                                <rect key="frame" x="0.0" y="0.0" width="343" height="17"/>
+                                                                                <subviews>
+                                                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="APPLE ID" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="59N-O1-6bM">
+                                                                                        <rect key="frame" x="14" y="0.0" width="329" height="17"/>
+                                                                                        <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                                                                        <color key="textColor" white="1" alpha="0.75" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                                        <nil key="highlightedColor"/>
+                                                                                    </label>
+                                                                                </subviews>
+                                                                                <edgeInsets key="layoutMargins" top="0.0" left="14" bottom="0.0" right="0.0"/>
+                                                                            </stackView>
+                                                                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="gNe-dC-oI1">
+                                                                                <rect key="frame" x="0.0" y="21" width="343" height="51"/>
+                                                                                <subviews>
+                                                                                    <textField opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="left" contentVerticalAlignment="center" placeholder="name@email.com" textAlignment="natural" minimumFontSize="17" translatesAutoresizingMaskIntoConstraints="NO" id="DBu-vt-hlo">
+                                                                                        <rect key="frame" x="14" y="0.0" width="315" height="51"/>
+                                                                                        <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                                        <fontDescription key="fontDescription" type="boldSystem" pointSize="19"/>
+                                                                                        <textInputTraits key="textInputTraits" returnKeyType="next" textContentType="email"/>
+                                                                                        <connections>
+                                                                                            <outlet property="delegate" destination="yO1-iT-7NP" id="G13-jV-DLX"/>
+                                                                                        </connections>
+                                                                                    </textField>
+                                                                                </subviews>
+                                                                                <color key="backgroundColor" white="1" alpha="0.29999999999999999" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                                <constraints>
+                                                                                    <constraint firstAttribute="trailingMargin" secondItem="DBu-vt-hlo" secondAttribute="trailing" id="0Lf-vH-juh"/>
+                                                                                    <constraint firstItem="DBu-vt-hlo" firstAttribute="centerY" secondItem="gNe-dC-oI1" secondAttribute="centerY" id="kgs-hg-ECM"/>
+                                                                                    <constraint firstItem="DBu-vt-hlo" firstAttribute="height" secondItem="gNe-dC-oI1" secondAttribute="height" id="n7y-Xg-8MP"/>
+                                                                                    <constraint firstItem="DBu-vt-hlo" firstAttribute="leading" secondItem="gNe-dC-oI1" secondAttribute="leadingMargin" id="sat-rb-OIu"/>
+                                                                                    <constraint firstAttribute="height" constant="51" id="tuP-Uo-6qp"/>
+                                                                                </constraints>
+                                                                                <edgeInsets key="layoutMargins" top="0.0" left="14" bottom="0.0" right="14"/>
+                                                                            </view>
+                                                                        </subviews>
+                                                                    </stackView>
+                                                                    <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="4" translatesAutoresizingMaskIntoConstraints="NO" id="hd5-yc-rcq" userLabel="Password">
+                                                                        <rect key="frame" x="0.0" y="87" width="343" height="72"/>
+                                                                        <subviews>
+                                                                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" translatesAutoresizingMaskIntoConstraints="NO" id="lvX-im-C95">
+                                                                                <rect key="frame" x="0.0" y="0.0" width="343" height="17"/>
+                                                                                <subviews>
+                                                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="PASSWORD" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Ava-XY-7vs">
+                                                                                        <rect key="frame" x="14" y="0.0" width="329" height="17"/>
+                                                                                        <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                                                                        <color key="textColor" white="1" alpha="0.75" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                                        <nil key="highlightedColor"/>
+                                                                                    </label>
+                                                                                </subviews>
+                                                                                <edgeInsets key="layoutMargins" top="0.0" left="14" bottom="0.0" right="0.0"/>
+                                                                            </stackView>
+                                                                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="cLc-iA-yq5">
+                                                                                <rect key="frame" x="0.0" y="21" width="343" height="51"/>
+                                                                                <subviews>
+                                                                                    <textField opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="left" contentVerticalAlignment="center" placeholder="••••••••" textAlignment="natural" minimumFontSize="17" translatesAutoresizingMaskIntoConstraints="NO" id="R77-TQ-lVT">
+                                                                                        <rect key="frame" x="14" y="0.0" width="315" height="51"/>
+                                                                                        <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                                        <fontDescription key="fontDescription" type="boldSystem" pointSize="19"/>
+                                                                                        <textInputTraits key="textInputTraits" returnKeyType="go" enablesReturnKeyAutomatically="YES" secureTextEntry="YES" textContentType="password"/>
+                                                                                        <connections>
+                                                                                            <outlet property="delegate" destination="yO1-iT-7NP" id="Wpg-DV-BNL"/>
+                                                                                        </connections>
+                                                                                    </textField>
+                                                                                </subviews>
+                                                                                <color key="backgroundColor" white="1" alpha="0.29999999999999999" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                                <constraints>
+                                                                                    <constraint firstItem="R77-TQ-lVT" firstAttribute="leading" secondItem="cLc-iA-yq5" secondAttribute="leadingMargin" id="130-RD-MwU"/>
+                                                                                    <constraint firstAttribute="height" constant="51" id="9Jw-2V-fgf"/>
+                                                                                    <constraint firstItem="R77-TQ-lVT" firstAttribute="height" secondItem="cLc-iA-yq5" secondAttribute="height" id="FFf-Bp-LPT"/>
+                                                                                    <constraint firstItem="R77-TQ-lVT" firstAttribute="centerY" secondItem="cLc-iA-yq5" secondAttribute="centerY" id="agB-KM-ba3"/>
+                                                                                    <constraint firstAttribute="trailingMargin" secondItem="R77-TQ-lVT" secondAttribute="trailing" id="jB5-Ye-cJB"/>
+                                                                                </constraints>
+                                                                                <edgeInsets key="layoutMargins" top="0.0" left="14" bottom="0.0" right="14"/>
+                                                                            </view>
+                                                                        </subviews>
+                                                                    </stackView>
+                                                                </subviews>
+                                                            </stackView>
+                                                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="2N5-zd-fUj">
+                                                                <rect key="frame" x="0.0" y="191" width="343" height="51"/>
+                                                                <color key="backgroundColor" name="SettingsHighlighted"/>
+                                                                <constraints>
+                                                                    <constraint firstAttribute="height" constant="51" id="4BK-Un-5pl"/>
+                                                                </constraints>
+                                                                <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="19"/>
+                                                                <state key="normal" title="Sign in">
+                                                                    <color key="titleColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                                </state>
+                                                                <connections>
+                                                                    <action selector="authenticate" destination="yO1-iT-7NP" eventType="primaryActionTriggered" id="LER-a2-CbC"/>
+                                                                </connections>
+                                                            </button>
+                                                        </subviews>
+                                                    </stackView>
+                                                </subviews>
+                                            </stackView>
+                                            <stackView opaque="NO" contentMode="scaleToFill" verticalCompressionResistancePriority="250" axis="vertical" spacing="4" translatesAutoresizingMaskIntoConstraints="NO" id="DBk-rT-ZE8">
+                                                <rect key="frame" x="16" y="518.5" width="343" height="96.5"/>
+                                                <subviews>
+                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Why do we need this?" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="p9U-0q-Kn8">
+                                                        <rect key="frame" x="0.0" y="0.0" width="343" height="20.5"/>
+                                                        <fontDescription key="fontDescription" type="boldSystem" pointSize="17"/>
+                                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                        <nil key="highlightedColor"/>
+                                                    </label>
+                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" verticalCompressionResistancePriority="249" textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" minimumScaleFactor="0.25" translatesAutoresizingMaskIntoConstraints="NO" id="on2-62-waY">
+                                                        <rect key="frame" x="0.0" y="24.5" width="343" height="72"/>
+                                                        <string key="text">Your Apple ID is used to configure apps so they can be installed on this device. Your credentials will be stored securely in this device's Keychain and sent only to Apple for authentication.</string>
+                                                        <fontDescription key="fontDescription" type="system" pointSize="15"/>
+                                                        <color key="textColor" white="1" alpha="0.75" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                        <nil key="highlightedColor"/>
+                                                    </label>
+                                                </subviews>
+                                            </stackView>
+                                        </subviews>
+                                        <constraints>
+                                            <constraint firstItem="DBk-rT-ZE8" firstAttribute="top" relation="greaterThanOrEqual" secondItem="YmX-7v-pxh" secondAttribute="bottom" constant="8" symbolic="YES" id="zTU-eY-DWd"/>
+                                        </constraints>
+                                    </view>
+                                </subviews>
+                                <constraints>
+                                    <constraint firstItem="2wp-qG-f0Z" firstAttribute="leading" secondItem="WXx-hX-AXv" secondAttribute="leading" id="13j-ii-X7W"/>
+                                    <constraint firstAttribute="bottom" secondItem="2wp-qG-f0Z" secondAttribute="bottom" id="Ggl-es-C4C"/>
+                                    <constraint firstAttribute="trailing" secondItem="2wp-qG-f0Z" secondAttribute="trailing" id="nl1-88-5mM"/>
+                                    <constraint firstItem="2wp-qG-f0Z" firstAttribute="top" secondItem="WXx-hX-AXv" secondAttribute="top" id="wiH-lv-L9P"/>
+                                </constraints>
+                            </scrollView>
+                        </subviews>
+                        <viewLayoutGuide key="safeArea" id="zMn-DV-fpy"/>
+                        <color key="backgroundColor" name="SettingsBackground"/>
+                        <constraints>
+                            <constraint firstAttribute="bottom" secondItem="WXx-hX-AXv" secondAttribute="bottom" id="0jL-Ky-ju6"/>
+                            <constraint firstAttribute="leadingMargin" secondItem="YmX-7v-pxh" secondAttribute="leading" id="2PO-lG-dmB"/>
+                            <constraint firstItem="DBk-rT-ZE8" firstAttribute="leading" secondItem="2wp-qG-f0Z" secondAttribute="leadingMargin" id="5AT-nV-ZP9"/>
+                            <constraint firstItem="oyW-Fd-ojD" firstAttribute="top" secondItem="zMn-DV-fpy" secondAttribute="top" id="730-db-ukB"/>
+                            <constraint firstItem="2wp-qG-f0Z" firstAttribute="bottomMargin" secondItem="DBk-rT-ZE8" secondAttribute="bottom" id="HgY-oY-8KM"/>
+                            <constraint firstItem="zMn-DV-fpy" firstAttribute="trailing" secondItem="oyW-Fd-ojD" secondAttribute="trailing" id="KGE-CN-SWf"/>
+                            <constraint firstItem="WXx-hX-AXv" firstAttribute="top" secondItem="mjy-4S-hyH" secondAttribute="top" id="LPQ-bF-ic0"/>
+                            <constraint firstItem="zMn-DV-fpy" firstAttribute="trailing" secondItem="WXx-hX-AXv" secondAttribute="trailing" id="MG7-A6-pKp"/>
+                            <constraint firstAttribute="trailingMargin" secondItem="YmX-7v-pxh" secondAttribute="trailing" id="O4T-nu-o3e"/>
+                            <constraint firstItem="zMn-DV-fpy" firstAttribute="bottom" secondItem="oyW-Fd-ojD" secondAttribute="bottom" id="PuX-ab-cEq"/>
+                            <constraint firstItem="oyW-Fd-ojD" firstAttribute="leading" secondItem="zMn-DV-fpy" secondAttribute="leading" id="SzC-gC-Nvi"/>
+                            <constraint firstItem="2wp-qG-f0Z" firstAttribute="trailingMargin" secondItem="DBk-rT-ZE8" secondAttribute="trailing" id="VCf-bW-2K4"/>
+                            <constraint firstItem="WXx-hX-AXv" firstAttribute="leading" secondItem="zMn-DV-fpy" secondAttribute="leading" id="d08-zF-5X6"/>
+                            <constraint firstItem="2wp-qG-f0Z" firstAttribute="height" secondItem="oyW-Fd-ojD" secondAttribute="height" id="dFN-pw-TWt"/>
+                            <constraint firstItem="YmX-7v-pxh" firstAttribute="top" secondItem="2wp-qG-f0Z" secondAttribute="top" constant="6" id="iUr-Nd-tkt"/>
+                            <constraint firstItem="2wp-qG-f0Z" firstAttribute="width" secondItem="oyW-Fd-ojD" secondAttribute="width" id="rYO-GN-0Lk"/>
+                        </constraints>
+                    </view>
+                    <toolbarItems/>
+                    <navigationItem key="navigationItem" largeTitleDisplayMode="never" id="jCf-N4-xVD">
+                        <barButtonItem key="leftBarButtonItem" title="Close" id="nDc-Zs-wnK">
+                            <connections>
+                                <action selector="cancel:" destination="yO1-iT-7NP" id="xls-in-Pre"/>
+                            </connections>
+                        </barButtonItem>
+                    </navigationItem>
+                    <simulatedNavigationBarMetrics key="simulatedTopBarMetrics" prompted="NO"/>
+                    <nil key="simulatedBottomBarMetrics"/>
+                    <connections>
+                        <outlet property="appleIDBackgroundView" destination="gNe-dC-oI1" id="lab-WG-pyJ"/>
+                        <outlet property="appleIDTextField" destination="DBu-vt-hlo" id="ZMK-9K-phY"/>
+                        <outlet property="contentStackView" destination="YmX-7v-pxh" id="ZX5-Af-cEB"/>
+                        <outlet property="passwordBackgroundView" destination="cLc-iA-yq5" id="2JD-nS-Gf7"/>
+                        <outlet property="passwordTextField" destination="R77-TQ-lVT" id="cLQ-Wn-MsE"/>
+                        <outlet property="scrollView" destination="WXx-hX-AXv" id="hOb-gl-0OP"/>
+                        <outlet property="signInButton" destination="2N5-zd-fUj" id="ul1-bh-4l4"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="U7A-Cx-Bo9" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="605.60000000000002" y="736.28185907046486"/>
+        </scene>
+        <!--How it works-->
+        <scene sceneID="dMt-EA-SGy">
+            <objects>
+                <viewController storyboardIdentifier="instructionsViewController" hidesBottomBarWhenPushed="YES" id="aFi-fb-W0B" customClass="InstructionsViewController" customModule="AltStore" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" id="Otz-hn-WGS">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <stackView opaque="NO" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" axis="vertical" distribution="equalSpacing" translatesAutoresizingMaskIntoConstraints="NO" id="bp6-55-IG2">
+                                <rect key="frame" x="0.0" y="44" width="375" height="564"/>
+                                <subviews>
+                                    <stackView opaque="NO" contentMode="scaleToFill" alignment="center" spacing="20" translatesAutoresizingMaskIntoConstraints="NO" id="FjP-tm-w7K">
+                                        <rect key="frame" x="16" y="35" width="343" height="95.5"/>
+                                        <subviews>
+                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="1" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="i9V-3h-B8f">
+                                                <rect key="frame" x="0.0" y="0.0" width="59" height="95.5"/>
+                                                <constraints>
+                                                    <constraint firstAttribute="width" constant="59" id="ILg-0e-PW8"/>
+                                                </constraints>
+                                                <fontDescription key="fontDescription" type="system" weight="black" pointSize="80"/>
+                                                <color key="textColor" white="1" alpha="0.5" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                <nil key="highlightedColor"/>
+                                            </label>
+                                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="5" translatesAutoresizingMaskIntoConstraints="NO" id="Q20-ml-9D0">
+                                                <rect key="frame" x="79" y="16" width="264" height="64"/>
+                                                <subviews>
+                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Launch AltServer" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="XKD-XH-eB0">
+                                                        <rect key="frame" x="0.0" y="0.0" width="264" height="20.5"/>
+                                                        <fontDescription key="fontDescription" type="boldSystem" pointSize="17"/>
+                                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                        <nil key="highlightedColor"/>
+                                                    </label>
+                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Leave AltServer running in the background on your computer." textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="2" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="6HP-Xh-sAH">
+                                                        <rect key="frame" x="0.0" y="25.5" width="264" height="38.5"/>
+                                                        <fontDescription key="fontDescription" type="system" pointSize="16"/>
+                                                        <color key="textColor" white="1" alpha="0.59999999999999998" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                        <nil key="highlightedColor"/>
+                                                    </label>
+                                                </subviews>
+                                            </stackView>
+                                        </subviews>
+                                    </stackView>
+                                    <stackView opaque="NO" contentMode="scaleToFill" alignment="center" spacing="20" translatesAutoresizingMaskIntoConstraints="NO" id="LpI-Jt-SzX">
+                                        <rect key="frame" x="16" y="168" width="343" height="95.5"/>
+                                        <subviews>
+                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="2" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="0LW-eE-qHa">
+                                                <rect key="frame" x="0.0" y="0.0" width="59" height="95.5"/>
+                                                <constraints>
+                                                    <constraint firstAttribute="width" constant="59" id="HzE-AA-eE5"/>
+                                                </constraints>
+                                                <fontDescription key="fontDescription" type="system" weight="black" pointSize="80"/>
+                                                <color key="textColor" white="1" alpha="0.5" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                <nil key="highlightedColor"/>
+                                            </label>
+                                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="5" translatesAutoresizingMaskIntoConstraints="NO" id="dMu-eg-gIO">
+                                                <rect key="frame" x="79" y="17" width="264" height="61.5"/>
+                                                <subviews>
+                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Connect to Wi-Fi" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="esj-pD-D4A">
+                                                        <rect key="frame" x="0.0" y="0.0" width="264" height="20.5"/>
+                                                        <fontDescription key="fontDescription" type="boldSystem" pointSize="17"/>
+                                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                        <nil key="highlightedColor"/>
+                                                    </label>
+                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Enable iTunes Wi-Fi Sync and connect to the same Wi-Fi as AltServer." textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="2" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="4rk-ge-FSj">
+                                                        <rect key="frame" x="0.0" y="25.5" width="264" height="36"/>
+                                                        <fontDescription key="fontDescription" type="system" pointSize="16"/>
+                                                        <color key="textColor" white="1" alpha="0.59999999999999998" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                        <nil key="highlightedColor"/>
+                                                    </label>
+                                                </subviews>
+                                            </stackView>
+                                        </subviews>
+                                    </stackView>
+                                    <stackView opaque="NO" contentMode="scaleToFill" alignment="center" spacing="20" translatesAutoresizingMaskIntoConstraints="NO" id="tfb-ja-9UC">
+                                        <rect key="frame" x="16" y="300.5" width="343" height="95.5"/>
+                                        <subviews>
+                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="3" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="nVr-El-Csi">
+                                                <rect key="frame" x="0.0" y="0.0" width="59" height="95.5"/>
+                                                <constraints>
+                                                    <constraint firstAttribute="width" constant="59" id="fRj-b4-VTe"/>
+                                                </constraints>
+                                                <fontDescription key="fontDescription" type="system" weight="black" pointSize="80"/>
+                                                <color key="textColor" white="1" alpha="0.5" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                <nil key="highlightedColor"/>
+                                            </label>
+                                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="5" translatesAutoresizingMaskIntoConstraints="NO" id="z6Y-zi-teL">
+                                                <rect key="frame" x="79" y="16" width="264" height="64"/>
+                                                <subviews>
+                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Download Apps" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="JeJ-bk-UCA">
+                                                        <rect key="frame" x="0.0" y="0.0" width="264" height="20.5"/>
+                                                        <fontDescription key="fontDescription" type="boldSystem" pointSize="17"/>
+                                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                        <nil key="highlightedColor"/>
+                                                    </label>
+                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Browse and download apps directly from AltStore." textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="2" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="M7T-9j-uyt">
+                                                        <rect key="frame" x="0.0" y="25.5" width="264" height="38.5"/>
+                                                        <fontDescription key="fontDescription" type="system" pointSize="16"/>
+                                                        <color key="textColor" white="1" alpha="0.59999999999999998" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                        <nil key="highlightedColor"/>
+                                                    </label>
+                                                </subviews>
+                                            </stackView>
+                                        </subviews>
+                                    </stackView>
+                                    <stackView opaque="NO" contentMode="scaleToFill" alignment="center" spacing="20" translatesAutoresizingMaskIntoConstraints="NO" id="X3r-G1-vf2">
+                                        <rect key="frame" x="16" y="433.5" width="343" height="95.5"/>
+                                        <subviews>
+                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="4" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="i2U-NL-plG">
+                                                <rect key="frame" x="0.0" y="0.0" width="59" height="95.5"/>
+                                                <constraints>
+                                                    <constraint firstAttribute="width" constant="59" id="4Qg-s9-p7s"/>
+                                                </constraints>
+                                                <fontDescription key="fontDescription" type="system" weight="black" pointSize="80"/>
+                                                <color key="textColor" white="1" alpha="0.5" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                <nil key="highlightedColor"/>
+                                            </label>
+                                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="5" translatesAutoresizingMaskIntoConstraints="NO" id="Xs6-pJ-PUz">
+                                                <rect key="frame" x="79" y="17" width="264" height="62"/>
+                                                <subviews>
+                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Apps Refresh Automatically" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="nvb-Aq-sYa">
+                                                        <rect key="frame" x="0.0" y="0.0" width="264" height="20.5"/>
+                                                        <fontDescription key="fontDescription" type="boldSystem" pointSize="17"/>
+                                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                        <nil key="highlightedColor"/>
+                                                    </label>
+                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Apps are refreshed in the background when on same Wi-Fi as AltServer." textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="2" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="HU5-Hv-E3d">
+                                                        <rect key="frame" x="0.0" y="25.5" width="264" height="36.5"/>
+                                                        <fontDescription key="fontDescription" type="system" pointSize="16"/>
+                                                        <color key="textColor" white="1" alpha="0.59999999999999998" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                        <nil key="highlightedColor"/>
+                                                    </label>
+                                                </subviews>
+                                            </stackView>
+                                        </subviews>
+                                    </stackView>
+                                </subviews>
+                                <edgeInsets key="layoutMargins" top="35" left="0.0" bottom="35" right="0.0"/>
+                            </stackView>
+                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="qZ9-AR-2zK">
+                                <rect key="frame" x="16" y="608" width="343" height="51"/>
+                                <color key="backgroundColor" name="SettingsHighlighted"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="51" id="LQz-qG-ZJK"/>
+                                </constraints>
+                                <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="19"/>
+                                <state key="normal" title="Got it">
+                                    <color key="titleColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                </state>
+                                <connections>
+                                    <action selector="dismiss" destination="aFi-fb-W0B" eventType="primaryActionTriggered" id="sBq-zj-Mln"/>
+                                </connections>
+                            </button>
+                        </subviews>
+                        <viewLayoutGuide key="safeArea" id="Zek-aC-HOO"/>
+                        <color key="backgroundColor" name="SettingsBackground"/>
+                        <constraints>
+                            <constraint firstItem="qZ9-AR-2zK" firstAttribute="top" secondItem="bp6-55-IG2" secondAttribute="bottom" id="3yt-cr-swd"/>
+                            <constraint firstItem="bp6-55-IG2" firstAttribute="top" secondItem="Zek-aC-HOO" secondAttribute="top" id="42S-q2-YZn"/>
+                            <constraint firstAttribute="trailingMargin" secondItem="qZ9-AR-2zK" secondAttribute="trailing" id="8b4-iU-U7R"/>
+                            <constraint firstItem="bp6-55-IG2" firstAttribute="leading" secondItem="Zek-aC-HOO" secondAttribute="leading" id="K1R-1r-FP3"/>
+                            <constraint firstItem="Zek-aC-HOO" firstAttribute="trailing" secondItem="bp6-55-IG2" secondAttribute="trailing" id="aKV-sS-alh"/>
+                            <constraint firstAttribute="bottomMargin" secondItem="qZ9-AR-2zK" secondAttribute="bottom" id="e8e-9l-Mkt"/>
+                            <constraint firstItem="qZ9-AR-2zK" firstAttribute="leading" secondItem="Otz-hn-WGS" secondAttribute="leadingMargin" id="t2b-3e-6ld"/>
+                        </constraints>
+                    </view>
+                    <navigationItem key="navigationItem" title="How it works" largeTitleDisplayMode="always" id="bCq-Jq-gf1"/>
+                    <simulatedNavigationBarMetrics key="simulatedTopBarMetrics" prompted="NO"/>
+                    <connections>
+                        <outlet property="contentStackView" destination="bp6-55-IG2" id="k0Q-yS-Dxp"/>
+                        <outlet property="dismissButton" destination="qZ9-AR-2zK" id="w5c-v6-TcC"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="3Q4-ya-qhc" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="1353" y="736"/>
+        </scene>
+        <!--Refresh AltStore-->
+        <scene sceneID="9Vh-dM-OqX">
+            <objects>
+                <viewController storyboardIdentifier="refreshAltStoreViewController" id="aoK-yE-UVT" customClass="RefreshAltStoreViewController" customModule="AltStore" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" id="R83-kV-365">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="fpO-Bf-gFY" customClass="RSTPlaceholderView">
+                                <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                            </view>
+                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="8" translatesAutoresizingMaskIntoConstraints="NO" id="tDQ-ao-1Jg">
+                                <rect key="frame" x="16" y="570" width="343" height="89"/>
+                                <subviews>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="xcg-hT-tDe" customClass="PillButton" customModule="AltStore" customModuleProvider="target">
+                                        <rect key="frame" x="0.0" y="0.0" width="343" height="51"/>
+                                        <color key="backgroundColor" name="SettingsHighlighted"/>
+                                        <constraints>
+                                            <constraint firstAttribute="height" constant="51" id="SJA-N9-Z6u"/>
+                                        </constraints>
+                                        <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="19"/>
+                                        <color key="tintColor" name="SettingsHighlighted"/>
+                                        <state key="normal" title="Refresh Now">
+                                            <color key="titleColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                        </state>
+                                        <connections>
+                                            <action selector="refreshAltStore:" destination="aoK-yE-UVT" eventType="primaryActionTriggered" id="WQu-9b-Zgg"/>
+                                        </connections>
+                                    </button>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="qua-VA-asJ">
+                                        <rect key="frame" x="0.0" y="59" width="343" height="30"/>
+                                        <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
+                                        <state key="normal" title="Refresh Later">
+                                            <color key="titleColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                        </state>
+                                        <connections>
+                                            <action selector="cancel:" destination="aoK-yE-UVT" eventType="primaryActionTriggered" id="ffO-0a-LdE"/>
+                                        </connections>
+                                    </button>
+                                </subviews>
+                            </stackView>
+                        </subviews>
+                        <viewLayoutGuide key="safeArea" id="iwE-xE-ziz"/>
+                        <color key="backgroundColor" name="SettingsBackground"/>
+                        <constraints>
+                            <constraint firstItem="fpO-Bf-gFY" firstAttribute="leading" secondItem="iwE-xE-ziz" secondAttribute="leading" id="A77-nX-Wg2"/>
+                            <constraint firstAttribute="trailingMargin" secondItem="tDQ-ao-1Jg" secondAttribute="trailing" id="KPg-sO-Rnc"/>
+                            <constraint firstItem="fpO-Bf-gFY" firstAttribute="trailing" secondItem="iwE-xE-ziz" secondAttribute="trailing" id="SGI-1D-Eaw"/>
+                            <constraint firstItem="fpO-Bf-gFY" firstAttribute="bottom" secondItem="R83-kV-365" secondAttribute="bottom" id="cHl-7X-dW1"/>
+                            <constraint firstAttribute="bottomMargin" secondItem="tDQ-ao-1Jg" secondAttribute="bottom" id="kLN-e7-BJE"/>
+                            <constraint firstItem="fpO-Bf-gFY" firstAttribute="top" secondItem="R83-kV-365" secondAttribute="top" id="oKo-10-7kD"/>
+                            <constraint firstItem="tDQ-ao-1Jg" firstAttribute="leading" secondItem="R83-kV-365" secondAttribute="leadingMargin" id="zEt-Xr-kJx"/>
+                        </constraints>
+                    </view>
+                    <navigationItem key="navigationItem" title="Refresh AltStore" largeTitleDisplayMode="always" id="5nk-NR-jtV"/>
+                    <simulatedNavigationBarMetrics key="simulatedTopBarMetrics" prompted="NO"/>
+                    <connections>
+                        <outlet property="placeholderView" destination="fpO-Bf-gFY" id="q7d-au-d94"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="Chr-7g-qEw" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="2101.5999999999999" y="733.5832083958021"/>
+        </scene>
+    </scenes>
+    <color key="tintColor" name="Primary"/>
+    <resources>
+        <namedColor name="Primary">
+            <color red="0.0040000001899898052" green="0.50199997425079346" blue="0.51800000667572021" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
+        <namedColor name="SettingsBackground">
+            <color red="0.0039215686274509803" green="0.50196078431372548" blue="0.51764705882352946" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
+        <namedColor name="SettingsHighlighted">
+            <color red="0.0080000003799796104" green="0.32199999690055847" blue="0.40400001406669617" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
+    </resources>
+</document>

AltStore/Authentication/AuthenticationViewController.swift

@@ -0,0 +1,171 @@
+//
+//  AuthenticationViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 9/5/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import AltSign
+
+class AuthenticationViewController: UIViewController
+{
+    var authenticationHandler: ((String, String, @escaping (Result<(ALTAccount, ALTAppleAPISession), Error>) -> Void) -> Void)?
+    var completionHandler: (((ALTAccount, ALTAppleAPISession, String)?) -> Void)?
+    
+    private weak var toastView: ToastView?
+    
+    @IBOutlet private var appleIDTextField: UITextField!
+    @IBOutlet private var passwordTextField: UITextField!
+    @IBOutlet private var signInButton: UIButton!
+    
+    @IBOutlet private var appleIDBackgroundView: UIView!
+    @IBOutlet private var passwordBackgroundView: UIView!
+    
+    @IBOutlet private var scrollView: UIScrollView!
+    @IBOutlet private var contentStackView: UIStackView!
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+        
+        self.signInButton.activityIndicatorView.style = .white
+        
+        for view in [self.appleIDBackgroundView!, self.passwordBackgroundView!, self.signInButton!]
+        {
+            view.clipsToBounds = true
+            view.layer.cornerRadius = 16
+        }
+
+        if UIScreen.main.isExtraCompactHeight
+        {
+            self.contentStackView.spacing = 20
+        }
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(AuthenticationViewController.textFieldDidChangeText(_:)), name: UITextField.textDidChangeNotification, object: self.appleIDTextField)
+        NotificationCenter.default.addObserver(self, selector: #selector(AuthenticationViewController.textFieldDidChangeText(_:)), name: UITextField.textDidChangeNotification, object: self.passwordTextField)
+        
+        self.update()
+    }
+    
+    override func viewDidDisappear(_ animated: Bool)
+    {
+        super.viewDidDisappear(animated)
+        
+        self.signInButton.isIndicatingActivity = false
+        self.toastView?.dismiss()
+    }
+}
+
+private extension AuthenticationViewController
+{
+    func update()
+    {
+        if let _ = self.validate()
+        {
+            self.signInButton.isEnabled = true
+            self.signInButton.alpha = 1.0
+        }
+        else
+        {
+            self.signInButton.isEnabled = false
+            self.signInButton.alpha = 0.6
+        }
+    }
+    
+    func validate() -> (String, String)?
+    {
+        guard
+            let emailAddress = self.appleIDTextField.text?.trimmingCharacters(in: .whitespacesAndNewlines), !emailAddress.isEmpty,
+            let password = self.passwordTextField.text?.trimmingCharacters(in: .whitespacesAndNewlines), !password.isEmpty
+        else { return nil }
+        
+        return (emailAddress, password)
+    }
+}
+
+private extension AuthenticationViewController
+{
+    @IBAction func authenticate()
+    {
+        guard let (emailAddress, password) = self.validate() else { return }
+        
+        self.appleIDTextField.resignFirstResponder()
+        self.passwordTextField.resignFirstResponder()
+        
+        self.signInButton.isIndicatingActivity = true
+        
+        self.authenticationHandler?(emailAddress, password) { (result) in
+            switch result
+            {
+            case .failure(ALTAppleAPIError.requiresTwoFactorAuthentication):
+                // Ignore
+                DispatchQueue.main.async {
+                    self.signInButton.isIndicatingActivity = false
+                }
+                
+            case .failure(let error as NSError):
+                DispatchQueue.main.async {
+                    let error = error.withLocalizedFailure(NSLocalizedString("Failed to Log In", comment: ""))
+                    
+                    let toastView = ToastView(error: error)
+                    toastView.textLabel.textColor = .altPink
+                    toastView.detailTextLabel.textColor = .altPink
+                    toastView.show(in: self)
+                    self.toastView = toastView
+                    
+                    self.signInButton.isIndicatingActivity = false
+                }
+                
+            case .success((let account, let session)):
+                self.completionHandler?((account, session, password))
+            }
+            
+            DispatchQueue.main.async {
+                self.scrollView.setContentOffset(CGPoint(x: 0, y: -self.view.safeAreaInsets.top), animated: true)
+            }
+        }
+    }
+    
+    @IBAction func cancel(_ sender: UIBarButtonItem)
+    {
+        self.completionHandler?(nil)
+    }
+}
+
+extension AuthenticationViewController: UITextFieldDelegate
+{
+    func textFieldShouldReturn(_ textField: UITextField) -> Bool
+    {
+        switch textField
+        {
+        case self.appleIDTextField: self.passwordTextField.becomeFirstResponder()
+        case self.passwordTextField: self.authenticate()
+        default: break
+        }
+        
+        self.update()
+        
+        return false
+    }
+    
+    func textFieldDidBeginEditing(_ textField: UITextField)
+    {
+        guard UIScreen.main.isExtraCompactHeight else { return }
+        
+        // Position all the controls within visible frame.
+        var contentOffset = self.scrollView.contentOffset
+        contentOffset.y = 44
+        self.scrollView.setContentOffset(contentOffset, animated: true)
+    }
+}
+
+extension AuthenticationViewController
+{
+    @objc func textFieldDidChangeText(_ notification: Notification)
+    {
+        self.update()
+    }
+}

AltStore/Authentication/InstructionsViewController.swift

@@ -0,0 +1,54 @@
+//
+//  InstructionsViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 9/6/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class InstructionsViewController: UIViewController
+{
+    var completionHandler: (() -> Void)?
+    
+    var showsBottomButton: Bool = false
+    
+    @IBOutlet private var contentStackView: UIStackView!
+    @IBOutlet private var dismissButton: UIButton!
+    
+    override var preferredStatusBarStyle: UIStatusBarStyle {
+        return .lightContent
+    }
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+        
+        if UIScreen.main.isExtraCompactHeight
+        {
+            self.contentStackView.layoutMargins.top = 0
+            self.contentStackView.layoutMargins.bottom = self.contentStackView.layoutMargins.left
+        }
+        
+        self.dismissButton.clipsToBounds = true
+        self.dismissButton.layer.cornerRadius = 16
+        
+        if self.showsBottomButton
+        {
+            self.navigationItem.hidesBackButton = true
+        }
+        else
+        {
+            self.dismissButton.isHidden = true
+        }
+    }
+}
+
+private extension InstructionsViewController
+{
+    @IBAction func dismiss()
+    {
+        self.completionHandler?()
+    }
+}

AltStore/Authentication/RefreshAltStoreViewController.swift

@@ -0,0 +1,84 @@
+//
+//  RefreshAltStoreViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 10/26/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import AltStoreCore
+import AltSign
+import Roxas
+
+class RefreshAltStoreViewController: UIViewController
+{
+    var context: AuthenticatedOperationContext!
+    
+    var completionHandler: ((Result<Void, Error>) -> Void)?
+    
+    @IBOutlet private var placeholderView: RSTPlaceholderView!
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+        
+        self.placeholderView.textLabel.isHidden = true
+        
+        self.placeholderView.detailTextLabel.textAlignment = .left
+        self.placeholderView.detailTextLabel.textColor = UIColor.white.withAlphaComponent(0.6)
+        self.placeholderView.detailTextLabel.text = NSLocalizedString("AltStore was unable to use an existing signing certificate, so it had to create a new one. This will cause any apps installed with an existing certificate to expire — including AltStore.\n\nTo prevent AltStore from expiring early, please refresh the app now. AltStore will quit once refreshing is complete.", comment: "")
+    }
+}
+
+private extension RefreshAltStoreViewController
+{
+    @IBAction func refreshAltStore(_ sender: PillButton)
+    {
+        guard let altStore = InstalledApp.fetchAltStore(in: DatabaseManager.shared.viewContext) else { return }
+                
+        func refresh()
+        {
+            sender.isIndicatingActivity = true
+            
+            if let progress = AppManager.shared.installationProgress(for: altStore)
+            {
+                // Cancel pending AltStore installation so we can start a new one.
+                progress.cancel()
+            }
+                        
+            // Install, _not_ refresh, to ensure we are installing with a non-revoked certificate.
+            let group = AppManager.shared.install(altStore, presentingViewController: self, context: self.context) { (result) in
+                switch result
+                {
+                case .success: self.completionHandler?(.success(()))
+                case .failure(let error as NSError):
+                    DispatchQueue.main.async {
+                        sender.progress = nil
+                        sender.isIndicatingActivity = false
+                        
+                        let alertController = UIAlertController(title: NSLocalizedString("Failed to Refresh AltStore", comment: ""), message: error.localizedFailureReason ?? error.localizedDescription, preferredStyle: .alert)
+                        alertController.addAction(UIAlertAction(title: NSLocalizedString("Try Again", comment: ""), style: .default, handler: { (action) in
+                            refresh()
+                        }))
+                        alertController.addAction(UIAlertAction(title: NSLocalizedString("Refresh Later", comment: ""), style: .cancel, handler: { (action) in
+                            self.completionHandler?(.failure(error))
+                        }))
+                        
+                        self.present(alertController, animated: true, completion: nil)
+                    }
+                }
+            }
+            
+            sender.progress = group.progress
+        }
+        
+        refresh()
+    }
+    
+    @IBAction func cancel(_ sender: UIButton)
+    {
+        self.completionHandler?(.failure(OperationError.cancelled))
+    }
+}

AltStore/Base.lproj/LaunchScreen.storyboard

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="6NO-wl-tj1">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
+        <capability name="Named colors" minToolsVersion="9.0"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" name="Background"/>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                    </view>
+                    <tabBarItem key="tabBarItem" title="" id="RiK-sx-Kgv"/>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="962.31884057971024" y="375"/>
+        </scene>
+        <!--Tab Bar Controller-->
+        <scene sceneID="9Yy-ze-Trt">
+            <objects>
+                <tabBarController automaticallyAdjustsScrollViewInsets="NO" id="6NO-wl-tj1" sceneMemberID="viewController">
+                    <toolbarItems/>
+                    <tabBar key="tabBar" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" id="4lc-l2-vDf">
+                        <autoresizingMask key="autoresizingMask"/>
+                        <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                    </tabBar>
+                    <connections>
+                        <segue destination="01J-lp-oVM" kind="relationship" relationship="viewControllers" id="2qH-aa-n0z"/>
+                    </connections>
+                </tabBarController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="pxX-hL-ovw" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="52.173913043478265" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <namedColor name="Background">
+            <color red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
+    </resources>
+</document>

AltStore/Browse/BrowseCollectionViewCell.swift

@@ -0,0 +1,99 @@
+//
+//  BrowseCollectionViewCell.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/15/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import Roxas
+
+import Nuke
+
+@objc class BrowseCollectionViewCell: UICollectionViewCell
+{
+    var imageURLs: [URL] = [] {
+        didSet {
+            self.dataSource.items = self.imageURLs as [NSURL]
+        }
+    }
+    private lazy var dataSource = self.makeDataSource()
+    
+    @IBOutlet var bannerView: AppBannerView!
+    @IBOutlet var subtitleLabel: UILabel!
+    
+    @IBOutlet private(set) var screenshotsCollectionView: UICollectionView!
+    
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.contentView.preservesSuperviewLayoutMargins = true
+        
+        // Must be registered programmatically, not in BrowseCollectionViewCell.xib, or else it'll throw an exception 🤷‍♂️.
+        self.screenshotsCollectionView.register(ScreenshotCollectionViewCell.self, forCellWithReuseIdentifier: RSTCellContentGenericCellIdentifier)
+        
+        self.screenshotsCollectionView.delegate = self
+        self.screenshotsCollectionView.dataSource = self.dataSource
+        self.screenshotsCollectionView.prefetchDataSource = self.dataSource
+    }
+}
+
+private extension BrowseCollectionViewCell
+{
+    func makeDataSource() -> RSTArrayCollectionViewPrefetchingDataSource<NSURL, UIImage>
+    {
+        let dataSource = RSTArrayCollectionViewPrefetchingDataSource<NSURL, UIImage>(items: [])
+        dataSource.cellConfigurationHandler = { (cell, screenshot, indexPath) in
+            let cell = cell as! ScreenshotCollectionViewCell
+            cell.imageView.image = nil
+            cell.imageView.isIndicatingActivity = true
+        }
+        dataSource.prefetchHandler = { (imageURL, indexPath, completionHandler) in
+            return RSTAsyncBlockOperation() { (operation) in
+                let request = ImageRequest(url: imageURL as URL, processor: .screenshot)
+                ImagePipeline.shared.loadImage(with: request, progress: nil, completion: { (response, error) in
+                    guard !operation.isCancelled else { return operation.finish() }
+                    
+                    if let image = response?.image
+                    {
+                        completionHandler(image, nil)
+                    }
+                    else
+                    {
+                        completionHandler(nil, error)
+                    }
+                })
+            }
+        }
+        dataSource.prefetchCompletionHandler = { (cell, image, indexPath, error) in
+            let cell = cell as! ScreenshotCollectionViewCell
+            cell.imageView.isIndicatingActivity = false
+            cell.imageView.image = image
+            
+            if let error = error
+            {
+                print("Error loading image:", error)
+            }
+        }
+        
+        return dataSource
+    }
+}
+
+extension BrowseCollectionViewCell: UICollectionViewDelegateFlowLayout
+{
+    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
+    {
+        // Assuming 9.0 / 16.0 ratio for now.
+        let aspectRatio: CGFloat = 9.0 / 16.0
+
+        let itemHeight = collectionView.bounds.height
+        let itemWidth = itemHeight * aspectRatio
+
+        let size = CGSize(width: itemWidth.rounded(.down), height: itemHeight.rounded(.down))
+        return size
+    }
+}

AltStore/Browse/BrowseCollectionViewCell.xib

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <collectionViewCell opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" reuseIdentifier="Cell" id="ln4-pC-7KY" customClass="BrowseCollectionViewCell" customModule="AltStore" customModuleProvider="target">
+            <rect key="frame" x="0.0" y="0.0" width="375" height="369"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+            <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO">
+                <rect key="frame" x="0.0" y="0.0" width="375" height="369"/>
+                <autoresizingMask key="autoresizingMask"/>
+                <subviews>
+                    <stackView verifyAmbiguity="off" opaque="NO" contentMode="scaleToFill" ambiguous="YES" axis="vertical" spacing="15" translatesAutoresizingMaskIntoConstraints="NO" id="5gU-g3-Fsy">
+                        <rect key="frame" x="16" y="0.0" width="343" height="369"/>
+                        <subviews>
+                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="ziA-mP-AY2" customClass="AppBannerView" customModule="AltStore" customModuleProvider="target">
+                                <rect key="frame" x="0.0" y="0.0" width="343" height="88"/>
+                                <color key="backgroundColor" systemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="88" id="z3D-cI-jhp"/>
+                                </constraints>
+                            </view>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Classic Nintendo games in your pocket." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="Imx-Le-bcy">
+                                <rect key="frame" x="0.0" y="103" width="343" height="17"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                <nil key="textColor"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                            <collectionView clipsSubviews="YES" multipleTouchEnabled="YES" userInteractionEnabled="NO" contentMode="scaleToFill" scrollEnabled="NO" contentInsetAdjustmentBehavior="never" dataMode="none" translatesAutoresizingMaskIntoConstraints="NO" id="RFs-qp-Ca4">
+                                <rect key="frame" x="0.0" y="135" width="343" height="234"/>
+                                <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                <collectionViewFlowLayout key="collectionViewLayout" minimumLineSpacing="0.0" minimumInteritemSpacing="15" id="jH9-Jo-IHA">
+                                    <size key="itemSize" width="120" height="213"/>
+                                    <size key="headerReferenceSize" width="0.0" height="0.0"/>
+                                    <size key="footerReferenceSize" width="0.0" height="0.0"/>
+                                    <inset key="sectionInset" minX="8" minY="0.0" maxX="8" maxY="0.0"/>
+                                </collectionViewFlowLayout>
+                                <cells/>
+                            </collectionView>
+                        </subviews>
+                    </stackView>
+                </subviews>
+            </view>
+            <constraints>
+                <constraint firstItem="5gU-g3-Fsy" firstAttribute="top" secondItem="ln4-pC-7KY" secondAttribute="top" id="DnT-vq-BOc"/>
+                <constraint firstItem="5gU-g3-Fsy" firstAttribute="leading" secondItem="ln4-pC-7KY" secondAttribute="leadingMargin" id="YPy-xL-iUn"/>
+                <constraint firstAttribute="bottom" secondItem="5gU-g3-Fsy" secondAttribute="bottom" id="gRu-Hz-CNL"/>
+                <constraint firstAttribute="trailingMargin" secondItem="5gU-g3-Fsy" secondAttribute="trailing" id="vf4-ql-4Vq"/>
+            </constraints>
+            <connections>
+                <outlet property="bannerView" destination="ziA-mP-AY2" id="yxo-ar-Cha"/>
+                <outlet property="screenshotsCollectionView" destination="RFs-qp-Ca4" id="xfi-AN-l17"/>
+                <outlet property="subtitleLabel" destination="Imx-Le-bcy" id="JVW-ZZ-51O"/>
+            </connections>
+            <point key="canvasLocation" x="136.95652173913044" y="152.67857142857142"/>
+        </collectionViewCell>
+    </objects>
+</document>

AltStore/Browse/BrowseViewController.swift

@@ -0,0 +1,371 @@
+//
+//  BrowseViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/15/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import AltStoreCore
+import Roxas
+
+import Nuke
+
+class BrowseViewController: UICollectionViewController
+{
+    private lazy var dataSource = self.makeDataSource()
+    private lazy var placeholderView = RSTPlaceholderView(frame: .zero)
+    
+    private let prototypeCell = BrowseCollectionViewCell.instantiate(with: BrowseCollectionViewCell.nib!)!
+    
+    private var loadingState: LoadingState = .loading {
+        didSet {
+            self.update()
+        }
+    }
+    
+    private var cachedItemSizes = [String: CGSize]()
+    
+    @IBOutlet private var sourcesBarButtonItem: UIBarButtonItem!
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+        
+        #if BETA
+        self.dataSource.searchController.searchableKeyPaths = [#keyPath(InstalledApp.name)]
+        self.navigationItem.searchController = self.dataSource.searchController
+        #endif
+        
+        self.prototypeCell.contentView.translatesAutoresizingMaskIntoConstraints = false
+        
+        self.collectionView.register(BrowseCollectionViewCell.nib, forCellWithReuseIdentifier: RSTCellContentGenericCellIdentifier)
+        
+        self.collectionView.dataSource = self.dataSource
+        self.collectionView.prefetchDataSource = self.dataSource
+        
+        self.registerForPreviewing(with: self, sourceView: self.collectionView)
+        
+        self.update()
+    }
+    
+    override func viewWillAppear(_ animated: Bool)
+    {
+        super.viewWillAppear(animated)
+        
+        self.fetchSource()
+        self.updateDataSource()
+        
+        self.update()
+    }
+    
+    @IBAction private func unwindFromSourcesViewController(_ segue: UIStoryboardSegue)
+    {
+        self.fetchSource()
+    }
+}
+
+private extension BrowseViewController
+{
+    func makeDataSource() -> RSTFetchedResultsCollectionViewPrefetchingDataSource<StoreApp, UIImage>
+    {
+        let fetchRequest = StoreApp.fetchRequest() as NSFetchRequest<StoreApp>
+        fetchRequest.sortDescriptors = [NSSortDescriptor(keyPath: \StoreApp.sourceIdentifier, ascending: true),
+                                        NSSortDescriptor(keyPath: \StoreApp.sortIndex, ascending: true),
+                                        NSSortDescriptor(keyPath: \StoreApp.name, ascending: true),
+                                        NSSortDescriptor(keyPath: \StoreApp.bundleIdentifier, ascending: true)]
+        fetchRequest.returnsObjectsAsFaults = false
+        fetchRequest.predicate = NSPredicate(format: "%K != %@", #keyPath(StoreApp.bundleIdentifier), StoreApp.altstoreAppID)
+        
+        let dataSource = RSTFetchedResultsCollectionViewPrefetchingDataSource<StoreApp, UIImage>(fetchRequest: fetchRequest, managedObjectContext: DatabaseManager.shared.viewContext)
+        dataSource.cellConfigurationHandler = { (cell, app, indexPath) in
+            let cell = cell as! BrowseCollectionViewCell
+            cell.layoutMargins.left = self.view.layoutMargins.left
+            cell.layoutMargins.right = self.view.layoutMargins.right
+            
+            cell.subtitleLabel.text = app.subtitle
+            cell.imageURLs = Array(app.screenshotURLs.prefix(2))
+            
+            cell.bannerView.configure(for: app)
+            
+            cell.bannerView.iconImageView.image = nil
+            cell.bannerView.iconImageView.isIndicatingActivity = true
+            
+            cell.bannerView.button.addTarget(self, action: #selector(BrowseViewController.performAppAction(_:)), for: .primaryActionTriggered)
+            cell.bannerView.button.activityIndicatorView.style = .white
+            
+            // Explicitly set to false to ensure we're starting from a non-activity indicating state.
+            // Otherwise, cell reuse can mess up some cached values.
+            cell.bannerView.button.isIndicatingActivity = false
+            
+            let tintColor = app.tintColor ?? .altPrimary
+            cell.tintColor = tintColor
+            
+            if app.installedApp == nil
+            {
+                let buttonTitle = NSLocalizedString("Free", comment: "")
+                cell.bannerView.button.setTitle(buttonTitle.uppercased(), for: .normal)
+                cell.bannerView.button.accessibilityLabel = String(format: NSLocalizedString("Download %@", comment: ""), app.name)
+                cell.bannerView.button.accessibilityValue = buttonTitle
+                
+                let progress = AppManager.shared.installationProgress(for: app)
+                cell.bannerView.button.progress = progress
+                
+                if Date() < app.versionDate
+                {
+                    cell.bannerView.button.countdownDate = app.versionDate
+                }
+                else
+                {
+                    cell.bannerView.button.countdownDate = nil
+                }
+            }
+            else
+            {
+                cell.bannerView.button.setTitle(NSLocalizedString("OPEN", comment: ""), for: .normal)
+                cell.bannerView.button.accessibilityLabel = String(format: NSLocalizedString("Open %@", comment: ""), app.name)
+                cell.bannerView.button.accessibilityValue = nil
+                cell.bannerView.button.progress = nil
+                cell.bannerView.button.countdownDate = nil
+            }
+        }
+        dataSource.prefetchHandler = { (storeApp, indexPath, completionHandler) -> Foundation.Operation? in
+            let iconURL = storeApp.iconURL
+            
+            return RSTAsyncBlockOperation() { (operation) in
+                ImagePipeline.shared.loadImage(with: iconURL, progress: nil, completion: { (response, error) in
+                    guard !operation.isCancelled else { return operation.finish() }
+                    
+                    if let image = response?.image
+                    {
+                        completionHandler(image, nil)
+                    }
+                    else
+                    {
+                        completionHandler(nil, error)
+                    }
+                })
+            }
+        }
+        dataSource.prefetchCompletionHandler = { (cell, image, indexPath, error) in
+            let cell = cell as! BrowseCollectionViewCell
+            cell.bannerView.iconImageView.isIndicatingActivity = false
+            cell.bannerView.iconImageView.image = image
+            
+            if let error = error
+            {
+                print("Error loading image:", error)
+            }
+        }
+        
+        dataSource.placeholderView = self.placeholderView
+        
+        return dataSource
+    }
+    
+    func updateDataSource()
+    {
+        if let patreonAccount = DatabaseManager.shared.patreonAccount(), patreonAccount.isPatron, PatreonAPI.shared.isAuthenticated
+        {
+            self.dataSource.predicate = nil
+        }
+        else
+        {
+            self.dataSource.predicate = NSPredicate(format: "%K == NO", #keyPath(StoreApp.isBeta))
+        }
+    }
+    
+    func fetchSource()
+    {
+        self.loadingState = .loading
+        
+        AppManager.shared.fetchSources() { (result) in
+            do
+            {
+                do
+                {
+                    let (_, context) = try result.get()
+                    try context.save()
+                    
+                    DispatchQueue.main.async {
+                        self.loadingState = .finished(.success(()))
+                    }
+                }
+                catch let error as AppManager.FetchSourcesError
+                {
+                    try error.managedObjectContext?.save()
+                    throw error
+                }
+            }
+            catch
+            {
+                DispatchQueue.main.async {
+                    if self.dataSource.itemCount > 0
+                    {
+                        let toastView = ToastView(error: error)
+                        toastView.addTarget(nil, action: #selector(TabBarController.presentSources), for: .touchUpInside)
+                        toastView.show(in: self)
+                    }
+                    
+                    self.loadingState = .finished(.failure(error))
+                }
+            }
+        }
+    }
+    
+    func update()
+    {
+        switch self.loadingState
+        {
+        case .loading:
+            self.placeholderView.textLabel.isHidden = true
+            self.placeholderView.detailTextLabel.isHidden = false
+            
+            self.placeholderView.detailTextLabel.text = NSLocalizedString("Loading...", comment: "")
+            
+            self.placeholderView.activityIndicatorView.startAnimating()
+            
+        case .finished(.failure(let error)):
+            self.placeholderView.textLabel.isHidden = false
+            self.placeholderView.detailTextLabel.isHidden = false
+            
+            self.placeholderView.textLabel.text = NSLocalizedString("Unable to Fetch Apps", comment: "")
+            self.placeholderView.detailTextLabel.text = error.localizedDescription
+            
+            self.placeholderView.activityIndicatorView.stopAnimating()
+            
+        case .finished(.success):
+            self.placeholderView.textLabel.isHidden = true
+            self.placeholderView.detailTextLabel.isHidden = true
+            
+            self.placeholderView.activityIndicatorView.stopAnimating()
+        }
+    }
+}
+
+private extension BrowseViewController
+{
+    @IBAction func performAppAction(_ sender: PillButton)
+    {
+        let point = self.collectionView.convert(sender.center, from: sender.superview)
+        guard let indexPath = self.collectionView.indexPathForItem(at: point) else { return }
+        
+        let app = self.dataSource.item(at: indexPath)
+        
+        if let installedApp = app.installedApp
+        {
+            self.open(installedApp)
+        }
+        else
+        {
+            self.install(app, at: indexPath)
+        }
+    }
+    
+    func install(_ app: StoreApp, at indexPath: IndexPath)
+    {
+        let previousProgress = AppManager.shared.installationProgress(for: app)
+        guard previousProgress == nil else {
+            previousProgress?.cancel()
+            return
+        }
+        
+        _ = AppManager.shared.install(app, presentingViewController: self) { (result) in
+            DispatchQueue.main.async {
+                switch result
+                {
+                case .failure(OperationError.cancelled): break // Ignore
+                case .failure(let error):
+                    let toastView = ToastView(error: error)
+                    toastView.show(in: self)
+                
+                case .success: print("Installed app:", app.bundleIdentifier)
+                }
+                
+                self.collectionView.reloadItems(at: [indexPath])
+            }
+        }
+        
+        self.collectionView.reloadItems(at: [indexPath])
+    }
+    
+    func open(_ installedApp: InstalledApp)
+    {
+        UIApplication.shared.open(installedApp.openAppURL)
+    }
+}
+
+extension BrowseViewController: UICollectionViewDelegateFlowLayout
+{
+    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
+    {
+        let item = self.dataSource.item(at: indexPath)
+
+        if let previousSize = self.cachedItemSizes[item.bundleIdentifier]
+        {
+            return previousSize
+        }
+
+        let maxVisibleScreenshots = 2 as CGFloat
+        let aspectRatio: CGFloat = 16.0 / 9.0
+        
+        let layout = self.prototypeCell.screenshotsCollectionView.collectionViewLayout as! UICollectionViewFlowLayout
+        let padding = (layout.minimumInteritemSpacing * (maxVisibleScreenshots - 1)) + layout.sectionInset.left + layout.sectionInset.right
+
+        self.dataSource.cellConfigurationHandler(self.prototypeCell, item, indexPath)
+
+        let widthConstraint = self.prototypeCell.contentView.widthAnchor.constraint(equalToConstant: collectionView.bounds.width)
+        widthConstraint.isActive = true
+        defer { widthConstraint.isActive = false }
+
+        // Manually update cell width & layout so we can accurately calculate screenshot sizes.
+        self.prototypeCell.frame.size.width = widthConstraint.constant
+        self.prototypeCell.layoutIfNeeded()
+        
+        let collectionViewWidth = self.prototypeCell.screenshotsCollectionView.bounds.width
+        let screenshotWidth = ((collectionViewWidth - padding) / maxVisibleScreenshots).rounded(.down)
+        let screenshotHeight = screenshotWidth * aspectRatio
+
+        let heightConstraint = self.prototypeCell.screenshotsCollectionView.heightAnchor.constraint(equalToConstant: screenshotHeight)
+        heightConstraint.priority = .defaultHigh // Prevent temporary unsatisfiable constraints error.
+        heightConstraint.isActive = true
+        defer { heightConstraint.isActive = false }
+
+        let itemSize = self.prototypeCell.contentView.systemLayoutSizeFitting(UIView.layoutFittingCompressedSize)
+        self.cachedItemSizes[item.bundleIdentifier] = itemSize
+        return itemSize
+    }
+    
+    override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
+    {
+        let app = self.dataSource.item(at: indexPath)
+        
+        let appViewController = AppViewController.makeAppViewController(app: app)
+        self.navigationController?.pushViewController(appViewController, animated: true)
+    }
+}
+
+extension BrowseViewController: UIViewControllerPreviewingDelegate
+{
+    func previewingContext(_ previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController?
+    {
+        guard
+            let indexPath = self.collectionView.indexPathForItem(at: location),
+            let cell = self.collectionView.cellForItem(at: indexPath)
+        else { return nil }
+        
+        previewingContext.sourceRect = cell.frame
+        
+        let app = self.dataSource.item(at: indexPath)
+        
+        let appViewController = AppViewController.makeAppViewController(app: app)
+        return appViewController
+    }
+    
+    func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController)
+    {
+        self.navigationController?.pushViewController(viewControllerToCommit, animated: true)
+    }
+}

AltStore/Browse/ScreenshotCollectionViewCell.swift

@@ -0,0 +1,44 @@
+//
+//  ScreenshotCollectionViewCell.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/15/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import Roxas
+
+@objc(ScreenshotCollectionViewCell)
+class ScreenshotCollectionViewCell: UICollectionViewCell
+{
+    let imageView = UIImageView(image: nil)
+    
+    override init(frame: CGRect)
+    {
+        super.init(frame: frame)
+        
+        self.initialize()
+    }
+    
+    required init?(coder aDecoder: NSCoder)
+    {
+        super.init(coder: aDecoder)
+        
+        self.initialize()
+    }
+    
+    private func initialize()
+    {
+        self.imageView.layer.masksToBounds = true
+        self.addSubview(self.imageView, pinningEdgesWith: .zero)
+    }
+    
+    override func layoutSubviews()
+    {
+        super.layoutSubviews()
+        
+        self.imageView.layer.cornerRadius = 4     
+    }
+}

AltStore/Components/AppBannerView.swift

@@ -0,0 +1,144 @@
+//
+//  AppBannerView.swift
+//  AltStore
+//
+//  Created by Riley Testut on 8/29/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import AltStoreCore
+import Roxas
+
+class AppBannerView: RSTNibView
+{
+    override var accessibilityLabel: String? {
+        get { return self.accessibilityView?.accessibilityLabel }
+        set { self.accessibilityView?.accessibilityLabel = newValue }
+    }
+    
+    override open var accessibilityAttributedLabel: NSAttributedString? {
+        get { return self.accessibilityView?.accessibilityAttributedLabel }
+        set { self.accessibilityView?.accessibilityAttributedLabel = newValue }
+    }
+    
+    override var accessibilityValue: String? {
+        get { return self.accessibilityView?.accessibilityValue }
+        set { self.accessibilityView?.accessibilityValue = newValue }
+    }
+    
+    override open var accessibilityAttributedValue: NSAttributedString? {
+        get { return self.accessibilityView?.accessibilityAttributedValue }
+        set { self.accessibilityView?.accessibilityAttributedValue = newValue }
+    }
+    
+    override open var accessibilityTraits: UIAccessibilityTraits {
+        get { return self.accessibilityView?.accessibilityTraits ?? [] }
+        set { self.accessibilityView?.accessibilityTraits = newValue }
+    }
+    
+    private var originalTintColor: UIColor?
+    
+    @IBOutlet var titleLabel: UILabel!
+    @IBOutlet var subtitleLabel: UILabel!
+    @IBOutlet var iconImageView: AppIconImageView!
+    @IBOutlet var button: PillButton!
+    @IBOutlet var buttonLabel: UILabel!
+    @IBOutlet var betaBadgeView: UIView!
+    
+    @IBOutlet var backgroundEffectView: UIVisualEffectView!
+    
+    @IBOutlet private var vibrancyView: UIVisualEffectView!
+    @IBOutlet private var accessibilityView: UIView!
+    
+    override init(frame: CGRect)
+    {
+        super.init(frame: frame)
+        
+        self.initialize()
+    }
+    
+    required init?(coder: NSCoder)
+    {
+        super.init(coder: coder)
+        
+        self.initialize()
+    }
+    
+    private func initialize()
+    {
+        self.accessibilityView.accessibilityTraits.formUnion(.button)
+        
+        self.isAccessibilityElement = false
+        self.accessibilityElements = [self.accessibilityView, self.button].compactMap { $0 }
+        
+        self.betaBadgeView.isHidden = true
+    }
+    
+    override func tintColorDidChange()
+    {
+        super.tintColorDidChange()
+        
+        if self.tintAdjustmentMode != .dimmed
+        {
+            self.originalTintColor = self.tintColor
+        }
+        
+        self.update()
+    }
+}
+
+extension AppBannerView
+{
+    func configure(for app: AppProtocol)
+    {
+        struct AppValues
+        {
+            var name: String
+            var developerName: String? = nil
+            var isBeta: Bool = false
+            
+            init(app: AppProtocol)
+            {
+                self.name = app.name
+                
+                guard let storeApp = (app as? StoreApp) ?? (app as? InstalledApp)?.storeApp else { return }
+                self.developerName = storeApp.developerName
+                
+                if storeApp.isBeta
+                {
+                    self.name = String(format: NSLocalizedString("%@ beta", comment: ""), app.name)
+                    self.isBeta = true
+                }
+            }
+        }
+
+        let values = AppValues(app: app)
+        self.titleLabel.text = app.name // Don't use values.name since that already includes "beta".
+        self.betaBadgeView.isHidden = !values.isBeta
+
+        if let developerName = values.developerName
+        {
+            self.subtitleLabel.text = developerName
+            self.accessibilityLabel = String(format: NSLocalizedString("%@ by %@", comment: ""), values.name, developerName)
+        }
+        else
+        {
+            self.subtitleLabel.text = NSLocalizedString("Sideloaded", comment: "")
+            self.accessibilityLabel = values.name
+        }
+    }
+}
+
+private extension AppBannerView
+{
+    func update()
+    {
+        self.clipsToBounds = true
+        self.layer.cornerRadius = 22
+        
+        self.subtitleLabel.textColor = self.originalTintColor ?? self.tintColor        
+        self.backgroundEffectView.backgroundColor = self.originalTintColor ?? self.tintColor
+    }
+}

AltStore/Components/AppBannerView.xib

@@ -0,0 +1,156 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="17154" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="17124"/>
+        <capability name="Named colors" minToolsVersion="9.0"/>
+        <capability name="System colors in document resources" minToolsVersion="11.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="AppBannerView" customModule="AltStore" customModuleProvider="target">
+            <connections>
+                <outlet property="accessibilityView" destination="bJL-Yw-i4u" id="PWe-tw-jDA"/>
+                <outlet property="backgroundEffectView" destination="rZk-be-tiI" id="fzU-VT-JeW"/>
+                <outlet property="betaBadgeView" destination="qQl-Ez-zC5" id="6O1-Cx-7qz"/>
+                <outlet property="button" destination="tVx-3G-dcu" id="joa-AH-syX"/>
+                <outlet property="buttonLabel" destination="Yd9-jw-faD" id="o7g-Gb-CIt"/>
+                <outlet property="iconImageView" destination="avS-dx-4iy" id="TQs-Ej-gin"/>
+                <outlet property="subtitleLabel" destination="oN5-vu-Dnw" id="gA4-iJ-Tix"/>
+                <outlet property="titleLabel" destination="mFe-zJ-eva" id="2OH-f8-cid"/>
+                <outlet property="vibrancyView" destination="fC4-1V-iMn" id="PXE-2B-A7w"/>
+            </connections>
+        </placeholder>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <view opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" id="FxI-Fh-ll5">
+            <rect key="frame" x="0.0" y="0.0" width="375" height="88"/>
+            <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+            <subviews>
+                <view userInteractionEnabled="NO" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="bJL-Yw-i4u">
+                    <rect key="frame" x="0.0" y="0.0" width="375" height="88"/>
+                    <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                    <accessibility key="accessibilityConfiguration">
+                        <bool key="isElement" value="YES"/>
+                    </accessibility>
+                </view>
+                <visualEffectView opaque="NO" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="rZk-be-tiI">
+                    <rect key="frame" x="0.0" y="0.0" width="375" height="88"/>
+                    <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" id="b8k-up-HtI">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="88"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" name="BlurTint"/>
+                    </view>
+                    <blurEffect style="systemChromeMaterial"/>
+                </visualEffectView>
+                <stackView opaque="NO" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" alignment="center" spacing="11" translatesAutoresizingMaskIntoConstraints="NO" id="d1T-UD-gWG" userLabel="App Info">
+                    <rect key="frame" x="0.0" y="0.0" width="375" height="88"/>
+                    <subviews>
+                        <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="avS-dx-4iy" customClass="AppIconImageView" customModule="AltStore" customModuleProvider="target">
+                            <rect key="frame" x="14" y="14" width="60" height="60"/>
+                            <constraints>
+                                <constraint firstAttribute="height" constant="60" id="6lU-H8-nEw"/>
+                                <constraint firstAttribute="width" secondItem="avS-dx-4iy" secondAttribute="height" multiplier="1:1" id="AYT-3g-wcV"/>
+                            </constraints>
+                        </imageView>
+                        <stackView opaque="NO" contentMode="scaleToFill" verticalHuggingPriority="100" insetsLayoutMarginsFromSafeArea="NO" axis="vertical" alignment="top" spacing="2" translatesAutoresizingMaskIntoConstraints="NO" id="caL-vN-Svn">
+                            <rect key="frame" x="85" y="25.5" width="190" height="37.5"/>
+                            <subviews>
+                                <stackView opaque="NO" contentMode="scaleToFill" horizontalCompressionResistancePriority="500" spacing="6" translatesAutoresizingMaskIntoConstraints="NO" id="1Es-pv-zwd">
+                                    <rect key="frame" x="0.0" y="0.0" width="126" height="19.5"/>
+                                    <subviews>
+                                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="100" verticalHuggingPriority="251" horizontalCompressionResistancePriority="500" text="App Name" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="mFe-zJ-eva">
+                                            <rect key="frame" x="0.0" y="0.0" width="79" height="19.5"/>
+                                            <accessibility key="accessibilityConfiguration" identifier="NameLabel"/>
+                                            <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="16"/>
+                                            <nil key="textColor"/>
+                                            <nil key="highlightedColor"/>
+                                        </label>
+                                        <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="BetaBadge" translatesAutoresizingMaskIntoConstraints="NO" id="qQl-Ez-zC5">
+                                            <rect key="frame" x="85" y="0.0" width="41" height="19.5"/>
+                                            <accessibility key="accessibilityConfiguration" identifier="Beta Badge">
+                                                <accessibilityTraits key="traits" image="YES" notEnabled="YES"/>
+                                                <bool key="isElement" value="YES"/>
+                                            </accessibility>
+                                        </imageView>
+                                    </subviews>
+                                </stackView>
+                                <visualEffectView opaque="NO" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="fC4-1V-iMn">
+                                    <rect key="frame" x="0.0" y="21.5" width="190" height="16"/>
+                                    <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" id="LQh-pN-ePC">
+                                        <rect key="frame" x="0.0" y="0.0" width="190" height="16"/>
+                                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                        <subviews>
+                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="100" verticalHuggingPriority="750" text="Developer" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="oN5-vu-Dnw">
+                                                <rect key="frame" x="0.0" y="0.0" width="190" height="16"/>
+                                                <fontDescription key="fontDescription" type="system" pointSize="13"/>
+                                                <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                <nil key="highlightedColor"/>
+                                            </label>
+                                        </subviews>
+                                        <constraints>
+                                            <constraint firstItem="oN5-vu-Dnw" firstAttribute="top" secondItem="LQh-pN-ePC" secondAttribute="top" id="7RH-WP-LzL"/>
+                                            <constraint firstItem="oN5-vu-Dnw" firstAttribute="leading" secondItem="LQh-pN-ePC" secondAttribute="leading" id="By8-cR-kTu"/>
+                                            <constraint firstAttribute="trailing" secondItem="oN5-vu-Dnw" secondAttribute="trailing" id="Hiv-6y-XrH"/>
+                                            <constraint firstAttribute="bottom" secondItem="oN5-vu-Dnw" secondAttribute="bottom" id="yc2-Dr-Qnv"/>
+                                        </constraints>
+                                    </view>
+                                    <vibrancyEffect style="secondaryLabel">
+                                        <blurEffect style="systemChromeMaterial"/>
+                                    </vibrancyEffect>
+                                </visualEffectView>
+                            </subviews>
+                        </stackView>
+                        <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="4" translatesAutoresizingMaskIntoConstraints="NO" id="3ox-Q2-Rnd" userLabel="Button Stack View">
+                            <rect key="frame" x="286" y="28.5" width="77" height="31"/>
+                            <subviews>
+                                <label hidden="YES" opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Yd9-jw-faD">
+                                    <rect key="frame" x="0.0" y="0.0" width="77" height="0.0"/>
+                                    <fontDescription key="fontDescription" type="system" weight="medium" pointSize="10"/>
+                                    <color key="textColor" systemColor="secondaryLabelColor"/>
+                                    <nil key="highlightedColor"/>
+                                </label>
+                                <button opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="900" horizontalCompressionResistancePriority="900" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="tVx-3G-dcu" customClass="PillButton" customModule="AltStore" customModuleProvider="target">
+                                    <rect key="frame" x="0.0" y="0.0" width="77" height="31"/>
+                                    <color key="backgroundColor" red="0.22352941179999999" green="0.4941176471" blue="0.39607843139999999" alpha="0.10000000000000001" colorSpace="custom" customColorSpace="sRGB"/>
+                                    <constraints>
+                                        <constraint firstAttribute="height" constant="31" id="Zwh-yQ-GTu"/>
+                                        <constraint firstAttribute="width" relation="greaterThanOrEqual" constant="77" id="eGc-Dk-QbL"/>
+                                    </constraints>
+                                    <fontDescription key="fontDescription" type="boldSystem" pointSize="14"/>
+                                    <state key="normal" title="FREE"/>
+                                </button>
+                            </subviews>
+                        </stackView>
+                    </subviews>
+                    <edgeInsets key="layoutMargins" top="14" left="14" bottom="14" right="12"/>
+                </stackView>
+            </subviews>
+            <constraints>
+                <constraint firstItem="d1T-UD-gWG" firstAttribute="leading" secondItem="FxI-Fh-ll5" secondAttribute="leading" id="5tv-QN-ZWU"/>
+                <constraint firstAttribute="bottom" secondItem="bJL-Yw-i4u" secondAttribute="bottom" id="FRq-ZD-2rE"/>
+                <constraint firstItem="rZk-be-tiI" firstAttribute="top" secondItem="FxI-Fh-ll5" secondAttribute="top" id="N6R-B2-Rie"/>
+                <constraint firstItem="bJL-Yw-i4u" firstAttribute="top" secondItem="FxI-Fh-ll5" secondAttribute="top" id="h6T-q1-YV9"/>
+                <constraint firstAttribute="trailing" secondItem="d1T-UD-gWG" secondAttribute="trailing" id="mlG-w3-Ly6"/>
+                <constraint firstAttribute="trailing" secondItem="rZk-be-tiI" secondAttribute="trailing" id="nEy-pm-Fcs"/>
+                <constraint firstAttribute="bottom" secondItem="d1T-UD-gWG" secondAttribute="bottom" id="nJo-To-LmX"/>
+                <constraint firstItem="bJL-Yw-i4u" firstAttribute="leading" secondItem="FxI-Fh-ll5" secondAttribute="leading" id="oLt-2z-QoJ"/>
+                <constraint firstItem="rZk-be-tiI" firstAttribute="leading" secondItem="FxI-Fh-ll5" secondAttribute="leading" id="pGD-Tl-U4c"/>
+                <constraint firstItem="d1T-UD-gWG" firstAttribute="top" secondItem="FxI-Fh-ll5" secondAttribute="top" id="q2p-0S-Nv5"/>
+                <constraint firstAttribute="trailing" secondItem="bJL-Yw-i4u" secondAttribute="trailing" id="vwx-P9-dlB"/>
+                <constraint firstAttribute="bottom" secondItem="rZk-be-tiI" secondAttribute="bottom" id="yk0-pw-joP"/>
+            </constraints>
+            <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+            <point key="canvasLocation" x="139.85507246376812" y="152.67857142857142"/>
+        </view>
+    </objects>
+    <resources>
+        <image name="BetaBadge" width="41" height="17"/>
+        <namedColor name="BlurTint">
+            <color red="1" green="1" blue="1" alpha="0.30000001192092896" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
+        <systemColor name="secondaryLabelColor">
+            <color red="0.23529411764705882" green="0.23529411764705882" blue="0.2627450980392157" alpha="0.59999999999999998" colorSpace="custom" customColorSpace="sRGB"/>
+        </systemColor>
+    </resources>
+</document>

AltStore/Components/AppIconImageView.swift

@@ -0,0 +1,43 @@
+//
+//  AppIconImageView.swift
+//  AltStore
+//
+//  Created by Riley Testut on 5/9/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class AppIconImageView: UIImageView
+{
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.contentMode = .scaleAspectFill
+        self.clipsToBounds = true
+        
+        self.backgroundColor = .white
+                
+        if #available(iOS 13, *)
+        {
+            self.layer.cornerCurve = .continuous
+        }
+        else
+        {
+            if self.layer.responds(to: Selector(("continuousCorners")))
+            {
+                self.layer.setValue(true, forKey: "continuousCorners")
+            }
+        }
+    }
+    
+    override func layoutSubviews()
+    {
+        super.layoutSubviews()
+        
+        // Based off of 60pt icon having 12pt radius.
+        let radius = self.bounds.height / 5
+        self.layer.cornerRadius = radius
+    }
+}

AltStore/Components/BackgroundTaskManager.swift

@@ -0,0 +1,102 @@
+//
+//  BackgroundTaskManager.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/19/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import AVFoundation
+
+class BackgroundTaskManager
+{
+    static let shared = BackgroundTaskManager()
+    
+    private var isPlaying = false
+    
+    private let audioEngine: AVAudioEngine
+    private let player: AVAudioPlayerNode
+    private let audioFile: AVAudioFile
+    
+    private let audioEngineQueue: DispatchQueue
+    
+    private init()
+    {
+        self.audioEngine = AVAudioEngine()
+        self.audioEngine.mainMixerNode.outputVolume = 0.0
+        
+        self.player = AVAudioPlayerNode()
+        self.audioEngine.attach(self.player)
+        
+        do
+        {
+            let audioFileURL = Bundle.main.url(forResource: "Silence", withExtension: "m4a")!
+            
+            self.audioFile = try AVAudioFile(forReading: audioFileURL)
+            self.audioEngine.connect(self.player, to: self.audioEngine.mainMixerNode, format: self.audioFile.processingFormat)
+        }
+        catch
+        {
+            fatalError("Error. \(error)")
+        }
+        
+        self.audioEngineQueue = DispatchQueue(label: "com.altstore.BackgroundTaskManager")
+    }
+}
+
+extension BackgroundTaskManager
+{
+    func performExtendedBackgroundTask(taskHandler: @escaping ((Result<Void, Error>, @escaping () -> Void) -> Void))
+    {
+        func finish()
+        {
+            self.player.stop()
+            self.audioEngine.stop()
+            
+            self.isPlaying = false
+        }
+        
+        self.audioEngineQueue.sync {
+            do
+            {
+                try AVAudioSession.sharedInstance().setCategory(.playback, options: .mixWithOthers)
+                try AVAudioSession.sharedInstance().setActive(true)
+                
+                // Schedule audio file buffers.
+                self.scheduleAudioFile()
+                self.scheduleAudioFile()
+                
+                let outputFormat = self.audioEngine.outputNode.outputFormat(forBus: 0)
+                self.audioEngine.connect(self.audioEngine.mainMixerNode, to: self.audioEngine.outputNode, format: outputFormat)
+                
+                try self.audioEngine.start()
+                self.player.play()
+                
+                self.isPlaying = true
+                
+                taskHandler(.success(())) {
+                    finish()
+                }
+            }
+            catch
+            {
+                taskHandler(.failure(error)) {
+                    finish()
+                }
+            }
+        }
+    }
+}
+
+private extension BackgroundTaskManager
+{
+    func scheduleAudioFile()
+    {
+        self.player.scheduleFile(self.audioFile, at: nil) {
+            self.audioEngineQueue.async {
+                guard self.isPlaying else { return }
+                self.scheduleAudioFile()
+            }
+        }
+    }
+}

AltStore/Components/BannerCollectionViewCell.swift

@@ -0,0 +1,54 @@
+//
+//  BannerCollectionViewCell.swift
+//  AltStore
+//
+//  Created by Riley Testut on 3/23/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class BannerCollectionViewCell: UICollectionViewCell
+{
+    private(set) var errorBadge: UIView?
+    @IBOutlet private(set) var bannerView: AppBannerView!
+    
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.contentView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        self.contentView.preservesSuperviewLayoutMargins = true
+        
+        if #available(iOS 13.0, *)
+        {
+            let errorBadge = UIView()
+            errorBadge.translatesAutoresizingMaskIntoConstraints = false
+            errorBadge.isHidden = true
+            self.addSubview(errorBadge)
+            
+            // Solid background to make the X opaque white.
+            let backgroundView = UIView()
+            backgroundView.translatesAutoresizingMaskIntoConstraints = false
+            backgroundView.backgroundColor = .white
+            errorBadge.addSubview(backgroundView)
+                        
+            let badgeView = UIImageView(image: UIImage(systemName: "exclamationmark.circle.fill"))
+            badgeView.preferredSymbolConfiguration = UIImage.SymbolConfiguration(scale: .large)
+            badgeView.tintColor = .systemRed
+            errorBadge.addSubview(badgeView, pinningEdgesWith: .zero)
+            
+            NSLayoutConstraint.activate([
+                errorBadge.centerXAnchor.constraint(equalTo: self.bannerView.trailingAnchor, constant: -5),
+                errorBadge.centerYAnchor.constraint(equalTo: self.bannerView.topAnchor, constant: 5),
+                
+                backgroundView.centerXAnchor.constraint(equalTo: badgeView.centerXAnchor),
+                backgroundView.centerYAnchor.constraint(equalTo: badgeView.centerYAnchor),
+                backgroundView.widthAnchor.constraint(equalTo: badgeView.widthAnchor, multiplier: 0.5),
+                backgroundView.heightAnchor.constraint(equalTo: badgeView.heightAnchor, multiplier: 0.5)
+            ])
+            
+            self.errorBadge = errorBadge
+        }
+    }
+}

AltStore/Components/Button.swift

@@ -0,0 +1,65 @@
+//
+//  Button.swift
+//  AltStore
+//
+//  Created by Riley Testut on 5/9/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class Button: UIButton
+{
+    override var intrinsicContentSize: CGSize {
+        var size = super.intrinsicContentSize
+        size.width += 20
+        size.height += 10
+        return size
+    }
+    
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.setTitleColor(.white, for: .normal)
+        
+        self.layer.masksToBounds = true
+        self.layer.cornerRadius = 8
+        
+        self.update()
+    }
+    
+    override func tintColorDidChange()
+    {
+        super.tintColorDidChange()
+        
+        self.update()
+    }
+    
+    override var isHighlighted: Bool {
+        didSet {
+            self.update()
+        }
+    }
+    
+    override var isEnabled: Bool {
+        didSet {
+            self.update()
+        }
+    }
+}
+
+private extension Button
+{
+    func update()
+    {
+        if self.isEnabled
+        {
+            self.backgroundColor = self.tintColor
+        }
+        else
+        {
+            self.backgroundColor = .lightGray
+        }
+    }
+}

AltStore/Components/CollapsingTextView.swift

@@ -0,0 +1,117 @@
+//
+//  CollapsingTextView.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/23/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class CollapsingTextView: UITextView
+{
+    var isCollapsed = true {
+        didSet {
+            self.setNeedsLayout()
+        }
+    }
+    
+    var maximumNumberOfLines = 2 {
+        didSet {
+            self.setNeedsLayout()
+        }
+    }
+    
+    var lineSpacing: CGFloat = 2 {
+        didSet {
+            self.setNeedsLayout()
+        }
+    }
+    
+    let moreButton = UIButton(type: .system)
+    
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.layoutManager.delegate = self
+        
+        self.textContainerInset = .zero
+        self.textContainer.lineFragmentPadding = 0
+        self.textContainer.lineBreakMode = .byTruncatingTail
+        self.textContainer.heightTracksTextView = true
+        self.textContainer.widthTracksTextView = true
+        
+        self.moreButton.setTitle(NSLocalizedString("More", comment: ""), for: .normal)
+        self.moreButton.addTarget(self, action: #selector(CollapsingTextView.toggleCollapsed(_:)), for: .primaryActionTriggered)
+        self.addSubview(self.moreButton)
+        
+        self.setNeedsLayout()
+    }
+    
+    override func layoutSubviews()
+    {
+        super.layoutSubviews()
+        
+        guard let font = self.font else { return }
+        
+        let buttonFont = UIFont.systemFont(ofSize: font.pointSize, weight: .medium)
+        self.moreButton.titleLabel?.font = buttonFont
+        
+        let buttonY = (font.lineHeight + self.lineSpacing) * CGFloat(self.maximumNumberOfLines - 1)
+        let size = self.moreButton.sizeThatFits(CGSize(width: 1000, height: 1000))
+        
+        let moreButtonFrame = CGRect(x: self.bounds.width - self.moreButton.bounds.width,
+                                     y: buttonY,
+                                     width: size.width,
+                                     height: font.lineHeight)
+        self.moreButton.frame = moreButtonFrame
+        
+        if self.isCollapsed
+        {
+            self.textContainer.maximumNumberOfLines = self.maximumNumberOfLines
+            
+            let maximumCollapsedHeight = font.lineHeight * CGFloat(self.maximumNumberOfLines)
+            if self.intrinsicContentSize.height > maximumCollapsedHeight
+            {
+                var exclusionFrame = moreButtonFrame
+                exclusionFrame.origin.y += self.moreButton.bounds.midY
+                exclusionFrame.size.width = self.bounds.width // Extra wide to make sure it wraps to next line.
+                self.textContainer.exclusionPaths = [UIBezierPath(rect: exclusionFrame)]
+                
+                self.moreButton.isHidden = false
+            }
+            else
+            {
+                self.textContainer.exclusionPaths = []
+                
+                self.moreButton.isHidden = true
+            }
+        }
+        else
+        {
+            self.textContainer.maximumNumberOfLines = 0
+            self.textContainer.exclusionPaths = []
+            
+            self.moreButton.isHidden = true
+        }
+        
+        self.invalidateIntrinsicContentSize()
+    }
+}
+
+private extension CollapsingTextView
+{
+    @objc func toggleCollapsed(_ sender: UIButton)
+    {
+        self.isCollapsed.toggle()
+    }
+}
+
+extension CollapsingTextView: NSLayoutManagerDelegate
+{
+    func layoutManager(_ layoutManager: NSLayoutManager, lineSpacingAfterGlyphAt glyphIndex: Int, withProposedLineFragmentRect rect: CGRect) -> CGFloat
+    {
+        return self.lineSpacing
+    }
+}

AltStore/Components/ForwardingNavigationController.swift

@@ -0,0 +1,20 @@
+//
+//  ForwardingNavigationController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 10/24/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class ForwardingNavigationController: UINavigationController
+{
+    override var childForStatusBarStyle: UIViewController? {
+        return self.topViewController
+    }
+    
+    override var childForStatusBarHidden: UIViewController? {
+        return self.topViewController
+    }
+}

AltStore/Components/NavigationBar.swift

@@ -0,0 +1,103 @@
+//
+//  NavigationBar.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/15/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import Roxas
+
+class NavigationBar: UINavigationBar
+{
+    @IBInspectable var automaticallyAdjustsItemPositions: Bool = true
+    
+    private let backgroundColorView = UIView()
+    
+    override init(frame: CGRect)
+    {
+        super.init(frame: frame)
+        
+        self.initialize()
+    }
+    
+    required init?(coder aDecoder: NSCoder)
+    {
+        super.init(coder: aDecoder)
+        
+        self.initialize()
+    }
+    
+    private func initialize()
+    {
+        if #available(iOS 13, *)
+        {
+            let standardAppearance = UINavigationBarAppearance()
+            standardAppearance.configureWithDefaultBackground()
+            standardAppearance.shadowColor = nil
+            
+            let edgeAppearance = UINavigationBarAppearance()
+            edgeAppearance.configureWithOpaqueBackground()
+            edgeAppearance.backgroundColor = self.barTintColor
+            edgeAppearance.shadowColor = nil
+            
+            if let tintColor = self.barTintColor
+            {
+                let textAttributes = [NSAttributedString.Key.foregroundColor: UIColor.white]
+                
+                standardAppearance.backgroundColor = tintColor
+                standardAppearance.titleTextAttributes = textAttributes
+                standardAppearance.largeTitleTextAttributes = textAttributes
+                
+                edgeAppearance.titleTextAttributes = textAttributes
+                edgeAppearance.largeTitleTextAttributes = textAttributes
+            }
+            else
+            {
+                standardAppearance.backgroundColor = nil
+            }
+            
+            self.scrollEdgeAppearance = edgeAppearance
+            self.standardAppearance = standardAppearance
+        }
+        else
+        {
+            self.shadowImage = UIImage()
+            
+            if let tintColor = self.barTintColor
+            {
+                self.backgroundColorView.backgroundColor = tintColor
+                
+                // Top = -50 to cover status bar area above navigation bar on any device.
+                // Bottom = -1 to prevent a flickering gray line from appearing.
+                self.addSubview(self.backgroundColorView, pinningEdgesWith: UIEdgeInsets(top: -50, left: 0, bottom: -1, right: 0))
+            }
+            else
+            {
+                self.barTintColor = .white
+            }
+        }
+    }
+    
+    override func layoutSubviews()
+    {
+        super.layoutSubviews()
+        
+        if self.backgroundColorView.superview != nil
+        {
+            self.insertSubview(self.backgroundColorView, at: 1)
+        }
+        
+        if self.automaticallyAdjustsItemPositions
+        {
+            // We can't easily shift just the back button up, so we shift the entire content view slightly.
+            for contentView in self.subviews
+            {
+                guard NSStringFromClass(type(of: contentView)).contains("ContentView") else { continue }
+                contentView.center.y -= 2
+            }
+        }
+    }
+}

AltStore/Components/PillButton.swift

@@ -0,0 +1,192 @@
+//
+//  PillButton.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/15/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class PillButton: UIButton
+{
+    override var accessibilityValue: String? {
+        get {
+            guard self.progress != nil else { return super.accessibilityValue }
+            return self.progressView.accessibilityValue
+        }
+        set { super.accessibilityValue = newValue }
+    }
+    
+    var progress: Progress? {
+        didSet {
+            self.progressView.progress = Float(self.progress?.fractionCompleted ?? 0)
+            self.progressView.observedProgress = self.progress
+            
+            let isUserInteractionEnabled = self.isUserInteractionEnabled
+            self.isIndicatingActivity = (self.progress != nil)
+            self.isUserInteractionEnabled = isUserInteractionEnabled
+            
+            self.update()
+        }
+    }
+    
+    var progressTintColor: UIColor? {
+        get {
+            return self.progressView.progressTintColor
+        }
+        set {
+            self.progressView.progressTintColor = newValue
+        }
+    }
+    
+    var countdownDate: Date? {
+        didSet {
+            self.isEnabled = (self.countdownDate == nil)
+            self.displayLink.isPaused = (self.countdownDate == nil)
+            
+            if self.countdownDate == nil
+            {
+                self.setTitle(nil, for: .disabled)
+            }
+        }
+    }
+    
+    private let progressView = UIProgressView(progressViewStyle: .default)
+    
+    private lazy var displayLink: CADisplayLink = {
+        let displayLink = CADisplayLink(target: self, selector: #selector(PillButton.updateCountdown))
+        displayLink.preferredFramesPerSecond = 15
+        displayLink.isPaused = true
+        displayLink.add(to: .main, forMode: .common)
+        return displayLink
+    }()
+    
+    private let dateComponentsFormatter: DateComponentsFormatter = {
+        let dateComponentsFormatter = DateComponentsFormatter()
+        dateComponentsFormatter.zeroFormattingBehavior = [.pad]
+        dateComponentsFormatter.collapsesLargestUnit = false
+        return dateComponentsFormatter
+    }()
+    
+    override var intrinsicContentSize: CGSize {
+        var size = super.intrinsicContentSize
+        size.width += 26
+        size.height += 3
+        return size
+    }
+    
+    deinit
+    {
+        self.displayLink.remove(from: .main, forMode: RunLoop.Mode.default)
+    }
+    
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.layer.masksToBounds = true
+        self.accessibilityTraits.formUnion([.updatesFrequently, .button])
+        
+        self.activityIndicatorView.style = .white
+        self.activityIndicatorView.isUserInteractionEnabled = false
+        
+        self.progressView.progress = 0
+        self.progressView.trackImage = UIImage()
+        self.progressView.isUserInteractionEnabled = false
+        self.addSubview(self.progressView)
+        
+        self.update()
+    }
+    
+    override func layoutSubviews()
+    {
+        super.layoutSubviews()
+        
+        self.progressView.bounds.size.width = self.bounds.width
+        
+        let scale = self.bounds.height / self.progressView.bounds.height
+        
+        self.progressView.transform = CGAffineTransform.identity.scaledBy(x: 1, y: scale)
+        self.progressView.center = CGPoint(x: self.bounds.midX, y: self.bounds.midY)
+        
+        self.layer.cornerRadius = self.bounds.midY
+    }
+    
+    override func tintColorDidChange()
+    {
+        super.tintColorDidChange()
+        
+        self.update()
+    }
+}
+
+private extension PillButton
+{
+    func update()
+    {
+        if self.progress == nil
+        {
+            self.setTitleColor(.white, for: .normal)
+            self.backgroundColor = self.tintColor
+        }
+        else
+        {
+            self.setTitleColor(self.tintColor, for: .normal)
+            self.backgroundColor = self.tintColor.withAlphaComponent(0.15)
+        }
+        
+        self.progressView.progressTintColor = self.tintColor
+    }
+    
+    @objc func updateCountdown()
+    {
+        guard let endDate = self.countdownDate else { return }
+        
+        let startDate = Date()
+        
+        let interval = endDate.timeIntervalSince(startDate)
+        guard interval > 0 else {
+            self.isEnabled = true
+            return
+        }
+        
+        let text: String?
+        
+        if interval < (1 * 60 * 60)
+        {
+            self.dateComponentsFormatter.unitsStyle = .positional
+            self.dateComponentsFormatter.allowedUnits = [.minute, .second]
+            
+            text = self.dateComponentsFormatter.string(from: startDate, to: endDate)
+        }
+        else if interval < (2 * 24 * 60 * 60)
+        {
+            self.dateComponentsFormatter.unitsStyle = .positional
+            self.dateComponentsFormatter.allowedUnits = [.hour, .minute, .second]
+            
+            text = self.dateComponentsFormatter.string(from: startDate, to: endDate)
+        }
+        else
+        {
+            self.dateComponentsFormatter.unitsStyle = .full
+            self.dateComponentsFormatter.allowedUnits = [.day]
+            
+            let numberOfDays = endDate.numberOfCalendarDays(since: startDate)
+            text = String(format: NSLocalizedString("%@ DAYS", comment: ""), NSNumber(value: numberOfDays))
+        }
+        
+        if let text = text
+        {            
+            UIView.performWithoutAnimation {
+                self.isEnabled = false
+                self.setTitle(text, for: .disabled)
+                self.layoutIfNeeded()
+            }
+        }
+        else
+        {
+            self.isEnabled = true
+        }
+    }
+}

AltStore/Components/TextCollectionReusableView.swift

@@ -0,0 +1,19 @@
+//
+//  TextCollectionReusableView.swift
+//  AltStore
+//
+//  Created by Riley Testut on 3/23/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class TextCollectionReusableView: UICollectionReusableView
+{
+    @IBOutlet var textLabel: UILabel!
+    
+    @IBOutlet var topLayoutConstraint: NSLayoutConstraint!
+    @IBOutlet var bottomLayoutConstraint: NSLayoutConstraint!
+    @IBOutlet var leadingLayoutConstraint: NSLayoutConstraint!
+    @IBOutlet var trailingLayoutConstraint: NSLayoutConstraint!
+}

AltStore/Components/ToastView.swift

@@ -0,0 +1,130 @@
+//
+//  ToastView.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/19/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Roxas
+
+import AltStoreCore
+
+extension TimeInterval
+{
+    static let shortToastViewDuration = 4.0
+    static let longToastViewDuration = 8.0
+}
+
+class ToastView: RSTToastView
+{
+    var preferredDuration: TimeInterval
+    
+    override init(text: String, detailText detailedText: String?)
+    {
+        if detailedText == nil
+        {
+            self.preferredDuration = .shortToastViewDuration
+        }
+        else
+        {
+            self.preferredDuration = .longToastViewDuration
+        }
+        
+        super.init(text: text, detailText: detailedText)
+        
+        self.isAccessibilityElement = true
+        
+        self.layoutMargins = UIEdgeInsets(top: 8, left: 16, bottom: 10, right: 16)
+        self.setNeedsLayout()
+        
+        if let stackView = self.textLabel.superview as? UIStackView
+        {
+            // RSTToastView does not expose stack view containing labels,
+            // so we access it indirectly as the labels' superview.
+            stackView.spacing = (detailedText != nil) ? 4.0 : 0.0
+        }
+    }
+    
+    convenience init(error: Error)
+    {
+        var error = error as NSError
+        var underlyingError = error.underlyingError
+        
+        var preferredDuration: TimeInterval?
+        
+        if
+            let unwrappedUnderlyingError = underlyingError,
+            error.domain == AltServerErrorDomain && error.code == ALTServerError.Code.underlyingError.rawValue
+        {
+            // Treat underlyingError as the primary error.
+            
+            error = unwrappedUnderlyingError as NSError
+            underlyingError = nil
+            
+            preferredDuration = .longToastViewDuration
+        }
+        
+        let text: String
+        let detailText: String?
+        
+        if let failure = error.localizedFailure
+        {
+            text = failure
+            detailText = error.localizedFailureReason ?? error.localizedRecoverySuggestion ?? underlyingError?.localizedDescription ?? error.localizedDescription
+        }
+        else if let reason = error.localizedFailureReason
+        {
+            text = reason
+            detailText = error.localizedRecoverySuggestion ?? underlyingError?.localizedDescription
+        }
+        else
+        {
+            text = error.localizedDescription
+            detailText = underlyingError?.localizedDescription ?? error.localizedRecoverySuggestion
+        }
+        
+        self.init(text: text, detailText: detailText)
+        
+        if let preferredDuration = preferredDuration
+        {
+            self.preferredDuration = preferredDuration
+        }
+    }
+    
+    required init(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override func layoutSubviews()
+    {
+        super.layoutSubviews()
+        
+        // Rough calculation to determine height of ToastView with one-line textLabel.
+        let minimumHeight = self.textLabel.font.lineHeight.rounded() + 18
+        self.layer.cornerRadius = minimumHeight/2
+    }
+    
+    func show(in viewController: UIViewController)
+    {
+        self.show(in: viewController.navigationController?.view ?? viewController.view, duration: self.preferredDuration)
+    }
+    
+    override func show(in view: UIView, duration: TimeInterval)
+    {
+        super.show(in: view, duration: duration)
+        
+        let announcement = (self.textLabel.text ?? "") + ". " + (self.detailTextLabel.text ?? "")
+        self.accessibilityLabel = announcement
+        
+        // Minimum 0.75 delay to prevent announcement being cut off by VoiceOver.
+        DispatchQueue.main.asyncAfter(deadline: .now() + 0.75) {
+            UIAccessibility.post(notification: .announcement, argument: announcement)
+        }
+    }
+    
+    override func show(in view: UIView)
+    {
+        self.show(in: view, duration: self.preferredDuration)
+    }
+}

AltStore/Extensions/FileManager+DirectorySize.swift

@@ -0,0 +1,36 @@
+//
+//  FileManager+DirectorySize.swift
+//  AltStore
+//
+//  Created by Riley Testut on 3/31/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+extension FileManager
+{
+    func directorySize(at directoryURL: URL) -> Int?
+    {
+        guard let enumerator = FileManager.default.enumerator(at: directoryURL, includingPropertiesForKeys: [.fileSizeKey]) else { return nil }
+        
+        var total: Int = 0
+        
+        for case let fileURL as URL in enumerator
+        {
+            do
+            {
+                let resourceValues = try fileURL.resourceValues(forKeys: [.fileSizeKey])
+                guard let fileSize = resourceValues.fileSize else { continue }
+                
+                total += fileSize
+            }
+            catch
+            {
+                print("Failed to read file size for item: \(fileURL).", error)
+            }
+        }
+        
+        return total
+    }
+}

AltStore/Extensions/INInteraction+AltStore.swift

@@ -0,0 +1,23 @@
+//
+//  INInteraction+AltStore.swift
+//  AltStore
+//
+//  Created by Riley Testut on 9/4/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Intents
+
+// Requires iOS 14 in-app intent handling.
+@available(iOS 14, *)
+extension INInteraction
+{
+    static func refreshAllApps() -> INInteraction
+    {
+        let refreshAllIntent = RefreshAllIntent()
+        refreshAllIntent.suggestedInvocationPhrase = NSString.deferredLocalizedIntentsString(with: "Refresh my apps") as String
+        
+        let interaction = INInteraction(intent: refreshAllIntent, response: nil)
+        return interaction
+    }
+}

AltStore/Extensions/UIDevice+Jailbreak.swift

@@ -0,0 +1,50 @@
+//
+//  UIDevice+Jailbreak.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/5/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import UIKit
+import ARKit
+
+extension UIDevice
+{
+    var isJailbroken: Bool {
+        if
+            FileManager.default.fileExists(atPath: "/Applications/Cydia.app") ||
+            FileManager.default.fileExists(atPath: "/Library/MobileSubstrate/MobileSubstrate.dylib") ||
+            FileManager.default.fileExists(atPath: "/bin/bash") ||
+            FileManager.default.fileExists(atPath: "/usr/sbin/sshd") ||
+            FileManager.default.fileExists(atPath: "/etc/apt") ||
+            FileManager.default.fileExists(atPath: "/private/var/lib/apt/") ||
+            UIApplication.shared.canOpenURL(URL(string:"cydia://")!)
+        {
+            return true
+        }
+        else
+        {
+            return false
+        }
+    }
+    
+    @available(iOS 14, *)
+    var supportsFugu14: Bool {
+        #if targetEnvironment(simulator)
+        return true
+        #else
+        // Fugu14 is supported on devices with an A12 processor or better.
+        // ARKit 3 is only supported by devices with an A12 processor or better, according to the documentation.
+        return ARBodyTrackingConfiguration.isSupported
+        #endif
+    }
+    
+    @available(iOS 14, *)
+    var isUntetheredJailbreakRequired: Bool {
+        let ios14_4 = OperatingSystemVersion(majorVersion: 14, minorVersion: 4, patchVersion: 0)
+        
+        let isUntetheredJailbreakRequired = ProcessInfo.processInfo.isOperatingSystemAtLeast(ios14_4)
+        return isUntetheredJailbreakRequired
+    }
+}

AltStore/Extensions/UIDevice+Vibration.swift

@@ -0,0 +1,46 @@
+//
+//  UIDevice+Vibration.swift
+//  AltStore
+//
+//  Created by Riley Testut on 9/1/21.
+//  Copyright © 2021 Riley Testut. All rights reserved.
+//
+
+import AudioToolbox
+import CoreHaptics
+
+private extension SystemSoundID
+{
+    static let pop = SystemSoundID(1520)
+    static let cancelled = SystemSoundID(1521)
+    static let tryAgain = SystemSoundID(1102)
+}
+
+@available(iOS 13, *)
+extension UIDevice
+{
+    enum VibrationPattern
+    {
+        case success
+        case error
+    }
+}
+
+@available(iOS 13, *)
+extension UIDevice
+{
+    var isVibrationSupported: Bool {
+        return CHHapticEngine.capabilitiesForHardware().supportsHaptics
+    }
+
+    func vibrate(pattern: VibrationPattern)
+    {
+        guard self.isVibrationSupported else { return }
+        
+        switch pattern
+        {
+        case .success: AudioServicesPlaySystemSound(.tryAgain)
+        case .error: AudioServicesPlaySystemSound(.cancelled)
+        }
+    }
+}

AltStore/Extensions/UIScreen+CompactHeight.swift

@@ -0,0 +1,16 @@
+//
+//  UIScreen+CompactHeight.swift
+//  AltStore
+//
+//  Created by Riley Testut on 9/6/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+extension UIScreen
+{
+    var isExtraCompactHeight: Bool {
+        return self.fixedCoordinateSpace.bounds.height < 600
+    }
+}

AltStore/Info.plist

@@ -0,0 +1,175 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>ALTAppGroups</key>
+	<array>
+		<string>group.com.rileytestut.AltStore</string>
+	</array>
+	<key>ALTDeviceID</key>
+	<string>00008110-000A68390A82801E</string>
+	<key>ALTServerID</key>
+	<string>1F7D5B55-79CE-4546-A029-D4DDC4AF3B6D</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDocumentTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeIconFiles</key>
+			<array/>
+			<key>CFBundleTypeName</key>
+			<string>iOS App</string>
+			<key>CFBundleTypeRole</key>
+			<string>Viewer</string>
+			<key>LSHandlerRank</key>
+			<string>Alternate</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>com.apple.itunes.ipa</string>
+			</array>
+		</dict>
+	</array>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(MARKETING_VERSION)</string>
+	<key>CFBundleURLTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeRole</key>
+			<string>Editor</string>
+			<key>CFBundleURLName</key>
+			<string>AltStore General</string>
+			<key>CFBundleURLSchemes</key>
+			<array>
+				<string>altstore</string>
+			</array>
+		</dict>
+		<dict>
+			<key>CFBundleTypeRole</key>
+			<string>Editor</string>
+			<key>CFBundleURLName</key>
+			<string>AltStore Backup</string>
+			<key>CFBundleURLSchemes</key>
+			<array>
+				<string>altstore-com.rileytestut.AltStore</string>
+			</array>
+		</dict>
+	</array>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>INIntentsSupported</key>
+	<array>
+		<string>RefreshAllIntent</string>
+		<string>ViewAppIntent</string>
+	</array>
+	<key>LSApplicationQueriesSchemes</key>
+	<array>
+		<string>altstore-com.rileytestut.AltStore</string>
+		<string>altstore-com.rileytestut.AltStore.Beta</string>
+		<string>altstore-com.rileytestut.Delta</string>
+		<string>altstore-com.rileytestut.Delta.Beta</string>
+		<string>altstore-com.rileytestut.Delta.Lite</string>
+		<string>altstore-com.rileytestut.Delta.Lite.Beta</string>
+		<string>altstore-com.rileytestut.Clip</string>
+		<string>altstore-com.rileytestut.Clip.Beta</string>
+	</array>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>NSBonjourServices</key>
+	<array>
+		<string>_altserver._tcp</string>
+	</array>
+	<key>NSLocalNetworkUsageDescription</key>
+	<string>AltStore uses the local network to find and communicate with AltServer.</string>
+	<key>NSUserActivityTypes</key>
+	<array>
+		<string>RefreshAllIntent</string>
+		<string>ViewAppIntent</string>
+	</array>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<true/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UILaunchStoryboardName</key>
+					<string>LaunchScreen</string>
+					<key>UISceneConfigurationName</key>
+					<string>Default Configuration</string>
+					<key>UISceneDelegateClassName</key>
+					<string>$(PRODUCT_MODULE_NAME).SceneDelegate</string>
+					<key>UISceneStoryboardFile</key>
+					<string>Main</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+	<key>UIBackgroundModes</key>
+	<array>
+		<string>audio</string>
+		<string>fetch</string>
+		<string>remote-notification</string>
+	</array>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UIStatusBarTintParameters</key>
+	<dict>
+		<key>UINavigationBar</key>
+		<dict>
+			<key>Style</key>
+			<string>UIBarStyleDefault</string>
+			<key>Translucent</key>
+			<false/>
+		</dict>
+	</dict>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UTImportedTypeDeclarations</key>
+	<array>
+		<dict>
+			<key>UTTypeConformsTo</key>
+			<array>
+				<string>public.data</string>
+			</array>
+			<key>UTTypeDescription</key>
+			<string>iOS App</string>
+			<key>UTTypeIconFiles</key>
+			<array/>
+			<key>UTTypeIdentifier</key>
+			<string>com.apple.itunes.ipa</string>
+			<key>UTTypeTagSpecification</key>
+			<dict>
+				<key>public.filename-extension</key>
+				<string>ipa</string>
+			</dict>
+		</dict>
+	</array>
+</dict>
+</plist>

AltStore/Intents/IntentHandler.swift

@@ -0,0 +1,146 @@
+//
+//  IntentHandler.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/6/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltStoreCore
+
+@available(iOS 14, *)
+class IntentHandler: NSObject, RefreshAllIntentHandling
+{
+    private let queue = DispatchQueue(label: "io.altstore.IntentHandler")
+    
+    private var completionHandlers = [RefreshAllIntent: (RefreshAllIntentResponse) -> Void]()
+    private var queuedResponses = [RefreshAllIntent: RefreshAllIntentResponse]()
+    
+    private var operations = [RefreshAllIntent: BackgroundRefreshAppsOperation]()
+    
+    func confirm(intent: RefreshAllIntent, completion: @escaping (RefreshAllIntentResponse) -> Void)
+    {
+        // Refreshing apps usually, but not always, completes within alotted time.
+        // As a workaround, we'll start refreshing apps in confirm() so we can
+        // take advantage of some extra time before starting handle() timeout timer.
+
+        self.completionHandlers[intent] = { (response) in
+            if response.code != .ready
+            {
+                // Operation finished before confirmation "timeout".
+                // Cache response to return it when handle() is called.
+                self.queuedResponses[intent] = response
+            }
+            
+            completion(RefreshAllIntentResponse(code: .ready, userActivity: nil))
+        }
+        
+        // Give ourselves 9 extra seconds before starting handle() timeout timer.
+        // 10 seconds or longer results in timeout regardless.
+        self.queue.asyncAfter(deadline: .now() + 9.0) {
+            self.finish(intent, response: RefreshAllIntentResponse(code: .ready, userActivity: nil))
+        }
+        
+        if !DatabaseManager.shared.isStarted
+        {
+            DatabaseManager.shared.start() { (error) in
+                if let error = error
+                {
+                    self.finish(intent, response: RefreshAllIntentResponse.failure(localizedDescription: error.localizedDescription))
+                }
+                else
+                {
+                    self.refreshApps(intent: intent)
+                }
+            }
+        }
+        else
+        {
+            self.refreshApps(intent: intent)
+        }
+    }
+    
+    func handle(intent: RefreshAllIntent, completion: @escaping (RefreshAllIntentResponse) -> Void)
+    {
+        self.completionHandlers[intent] = { (response) in
+            // Ignore .ready response from confirm() timeout.
+            guard response.code != .ready else { return }
+            completion(response)
+        }
+
+        if let response = self.queuedResponses[intent]
+        {
+            self.queuedResponses[intent] = nil
+            self.finish(intent, response: response)
+        }
+        else
+        {
+            self.queue.asyncAfter(deadline: .now() + 7.0) {
+                if let operation = self.operations[intent]
+                {
+                    // We took too long to finish and return the final result,
+                    // so we'll now present a normal notification when finished.
+                    operation.presentsFinishedNotification = true
+                }
+                
+                self.finish(intent, response: RefreshAllIntentResponse(code: .inProgress, userActivity: nil))
+            }
+        }
+    }
+}
+
+@available(iOS 14, *)
+private extension IntentHandler
+{
+    func finish(_ intent: RefreshAllIntent, response: RefreshAllIntentResponse)
+    {
+        self.queue.async {
+            if let completionHandler = self.completionHandlers[intent]
+            {
+                self.completionHandlers[intent] = nil
+                completionHandler(response)
+            }
+            else if response.code != .ready && response.code != .inProgress
+            {
+                // Queue response in case refreshing finishes after confirm() but before handle().
+                self.queuedResponses[intent] = response
+            }
+        }
+    }
+    
+    func refreshApps(intent: RefreshAllIntent)
+    {
+        DatabaseManager.shared.persistentContainer.performBackgroundTask { (context) in
+            let installedApps = InstalledApp.fetchActiveApps(in: context)
+            let operation = AppManager.shared.backgroundRefresh(installedApps, presentsNotifications: false) { (result) in
+                do
+                {
+                    let results = try result.get()
+                    
+                    for (_, result) in results
+                    {
+                        guard case let .failure(error) = result else { continue }
+                        throw error
+                    }
+                    
+                    self.finish(intent, response: RefreshAllIntentResponse(code: .success, userActivity: nil))
+                }
+                catch RefreshError.noInstalledApps
+                {
+                    self.finish(intent, response: RefreshAllIntentResponse(code: .success, userActivity: nil))
+                }
+                catch let error as NSError
+                {
+                    print("Failed to refresh apps in background.", error)
+                    self.finish(intent, response: RefreshAllIntentResponse.failure(localizedDescription: error.localizedFailureReason ?? error.localizedDescription))
+                }
+                
+                self.operations[intent] = nil
+            }
+            
+            self.operations[intent] = operation
+        }
+    }
+}

AltStore/Intents/Intents.intentdefinition

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>INEnums</key>
+	<array/>
+	<key>INIntentDefinitionModelVersion</key>
+	<string>1.2</string>
+	<key>INIntentDefinitionNamespace</key>
+	<string>KyhEWE</string>
+	<key>INIntentDefinitionSystemVersion</key>
+	<string>20A5354i</string>
+	<key>INIntentDefinitionToolsBuildVersion</key>
+	<string>12A8189n</string>
+	<key>INIntentDefinitionToolsVersion</key>
+	<string>12.0</string>
+	<key>INIntents</key>
+	<array>
+		<dict>
+			<key>INIntentCategory</key>
+			<string>generic</string>
+			<key>INIntentConfigurable</key>
+			<true/>
+			<key>INIntentDescriptionID</key>
+			<string>62S1rm</string>
+			<key>INIntentLastParameterTag</key>
+			<integer>3</integer>
+			<key>INIntentManagedParameterCombinations</key>
+			<dict>
+				<key></key>
+				<dict>
+					<key>INIntentParameterCombinationSupportsBackgroundExecution</key>
+					<true/>
+					<key>INIntentParameterCombinationTitle</key>
+					<string>Refresh All Apps</string>
+					<key>INIntentParameterCombinationTitleID</key>
+					<string>cJxa2I</string>
+					<key>INIntentParameterCombinationUpdatesLinked</key>
+					<true/>
+				</dict>
+			</dict>
+			<key>INIntentName</key>
+			<string>RefreshAll</string>
+			<key>INIntentParameterCombinations</key>
+			<dict>
+				<key></key>
+				<dict>
+					<key>INIntentParameterCombinationSupportsBackgroundExecution</key>
+					<true/>
+					<key>INIntentParameterCombinationTitle</key>
+					<string>Refresh All Apps</string>
+					<key>INIntentParameterCombinationTitleID</key>
+					<string>DKTGdO</string>
+				</dict>
+			</dict>
+			<key>INIntentResponse</key>
+			<dict>
+				<key>INIntentResponseCodes</key>
+				<array>
+					<dict>
+						<key>INIntentResponseCodeConciseFormatString</key>
+						<string>All apps have been refreshed.</string>
+						<key>INIntentResponseCodeConciseFormatStringID</key>
+						<string>3WMWsJ</string>
+						<key>INIntentResponseCodeFormatString</key>
+						<string>All apps have been refreshed.</string>
+						<key>INIntentResponseCodeFormatStringID</key>
+						<string>BjInD3</string>
+						<key>INIntentResponseCodeName</key>
+						<string>success</string>
+						<key>INIntentResponseCodeSuccess</key>
+						<true/>
+					</dict>
+					<dict>
+						<key>INIntentResponseCodeConciseFormatString</key>
+						<string>${localizedDescription}</string>
+						<key>INIntentResponseCodeConciseFormatStringID</key>
+						<string>GJdShK</string>
+						<key>INIntentResponseCodeFormatString</key>
+						<string>${localizedDescription}</string>
+						<key>INIntentResponseCodeFormatStringID</key>
+						<string>oXAiOU</string>
+						<key>INIntentResponseCodeName</key>
+						<string>failure</string>
+					</dict>
+				</array>
+				<key>INIntentResponseLastParameterTag</key>
+				<integer>3</integer>
+				<key>INIntentResponseParameters</key>
+				<array>
+					<dict>
+						<key>INIntentResponseParameterDisplayName</key>
+						<string>Localized Description</string>
+						<key>INIntentResponseParameterDisplayNameID</key>
+						<string>wdy22v</string>
+						<key>INIntentResponseParameterDisplayPriority</key>
+						<integer>1</integer>
+						<key>INIntentResponseParameterName</key>
+						<string>localizedDescription</string>
+						<key>INIntentResponseParameterTag</key>
+						<integer>3</integer>
+						<key>INIntentResponseParameterType</key>
+						<string>String</string>
+					</dict>
+				</array>
+			</dict>
+			<key>INIntentTitle</key>
+			<string>Refresh All Apps</string>
+			<key>INIntentTitleID</key>
+			<string>2b6Xto</string>
+			<key>INIntentType</key>
+			<string>Custom</string>
+			<key>INIntentVerb</key>
+			<string>Do</string>
+		</dict>
+	</array>
+	<key>INTypes</key>
+	<array/>
+</dict>
+</plist>

AltStore/LaunchViewController.swift

@@ -0,0 +1,89 @@
+//
+//  LaunchViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/30/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+import Roxas
+
+import AltStoreCore
+
+class LaunchViewController: RSTLaunchViewController
+{
+    private var didFinishLaunching = false
+    
+    private var destinationViewController: UIViewController!
+    
+    override var launchConditions: [RSTLaunchCondition] {
+        let isDatabaseStarted = RSTLaunchCondition(condition: { DatabaseManager.shared.isStarted }) { (completionHandler) in
+            DatabaseManager.shared.start(completionHandler: completionHandler)
+        }
+
+        return [isDatabaseStarted]
+    }
+    
+    override var childForStatusBarStyle: UIViewController? {
+        return self.children.first
+    }
+    
+    override var childForStatusBarHidden: UIViewController? {
+        return self.children.first
+    }
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+        
+        // Create destinationViewController now so view controllers can register for receiving Notifications.
+        self.destinationViewController = self.storyboard!.instantiateViewController(withIdentifier: "tabBarController") as! TabBarController
+    }
+}
+
+extension LaunchViewController
+{
+    override func handleLaunchError(_ error: Error)
+    {
+        do
+        {
+            throw error
+        }
+        catch let error as NSError
+        {
+            let title = error.userInfo[NSLocalizedFailureErrorKey] as? String ?? NSLocalizedString("Unable to Launch AltStore", comment: "")
+            
+            let alertController = UIAlertController(title: title, message: error.localizedDescription, preferredStyle: .alert)
+            alertController.addAction(UIAlertAction(title: NSLocalizedString("Retry", comment: ""), style: .default, handler: { (action) in
+                self.handleLaunchConditions()
+            }))
+            self.present(alertController, animated: true, completion: nil)
+        }
+    }
+    
+    override func finishLaunching()
+    {
+        super.finishLaunching()
+        
+        guard !self.didFinishLaunching else { return }
+        
+        AppManager.shared.update()
+        AppManager.shared.updatePatronsIfNeeded()        
+        PatreonAPI.shared.refreshPatreonAccount()
+        
+        // Add view controller as child (rather than presenting modally)
+        // so tint adjustment + card presentations works correctly.
+        self.destinationViewController.view.frame = CGRect(x: 0, y: 0, width: self.view.bounds.width, height: self.view.bounds.height)
+        self.destinationViewController.view.alpha = 0.0
+        self.addChild(self.destinationViewController)
+        self.view.addSubview(self.destinationViewController.view, pinningEdgesWith: .zero)
+        self.destinationViewController.didMove(toParent: self)
+        
+        UIView.animate(withDuration: 0.2) {
+            self.destinationViewController.view.alpha = 1.0
+        }
+        
+        self.didFinishLaunching = true
+    }
+}

AltStore/Managing Apps/AppManagerErrors.swift

@@ -0,0 +1,86 @@
+//
+//  AppManagerErrors.swift
+//  AltStore
+//
+//  Created by Riley Testut on 8/27/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import CoreData
+
+import AltStoreCore
+
+extension AppManager
+{
+    struct FetchSourcesError: LocalizedError, CustomNSError
+    {
+        var primaryError: Error?
+        
+        var sources: Set<Source>?
+        var errors = [Source: Error]()
+        
+        var managedObjectContext: NSManagedObjectContext?
+        
+        var errorDescription: String? {
+            if let error = self.primaryError
+            {
+                return error.localizedDescription
+            }
+            else
+            {
+                var localizedDescription: String?
+                
+                self.managedObjectContext?.performAndWait {
+                    if self.sources?.count == 1
+                    {
+                        localizedDescription = NSLocalizedString("Could not refresh store.", comment: "")
+                    }
+                    else if self.errors.count == 1
+                    {
+                        guard let source = self.errors.keys.first else { return }
+                        localizedDescription = String(format: NSLocalizedString("Could not refresh source “%@”.", comment: ""), source.name)
+                    }
+                    else
+                    {
+                        localizedDescription = String(format: NSLocalizedString("Could not refresh %@ sources.", comment: ""), NSNumber(value: self.errors.count))
+                    }
+                }
+                
+                return localizedDescription
+            }
+        }
+        
+        var recoverySuggestion: String? {
+            if let error = self.primaryError as NSError?
+            {
+                return error.localizedRecoverySuggestion
+            }
+            else if self.errors.count == 1
+            {
+                return nil
+            }
+            else
+            {
+                return NSLocalizedString("Tap to view source errors.", comment: "")
+            }
+        }
+        
+        var errorUserInfo: [String : Any] {
+            guard let error = self.errors.values.first, self.errors.count == 1 else { return [:] }
+            return [NSUnderlyingErrorKey: error]
+        }
+        
+        init(_ error: Error)
+        {
+            self.primaryError = error
+        }
+        
+        init(sources: Set<Source>, errors: [Source: Error], context: NSManagedObjectContext)
+        {
+            self.sources = sources
+            self.errors = errors
+            self.managedObjectContext = context
+        }
+    }
+}

AltStore/My Apps/InstalledAppsCollectionHeaderView.swift

@@ -0,0 +1,44 @@
+//
+//  InstalledAppsCollectionHeaderView.swift
+//  AltStore
+//
+//  Created by Riley Testut on 3/9/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class InstalledAppsCollectionHeaderView: UICollectionReusableView
+{
+    let textLabel: UILabel
+    let button: UIButton
+    
+    override init(frame: CGRect)
+    {
+        self.textLabel = UILabel()
+        self.textLabel.translatesAutoresizingMaskIntoConstraints = false
+        self.textLabel.font = UIFont.systemFont(ofSize: 24, weight: .bold)
+        self.textLabel.accessibilityTraits.insert(.header)
+        
+        self.button = UIButton(type: .system)
+        self.button.translatesAutoresizingMaskIntoConstraints = false
+        self.button.titleLabel?.font = UIFont.systemFont(ofSize: 16, weight: .medium)
+        
+        super.init(frame: frame)
+        
+        self.addSubview(self.textLabel)
+        self.addSubview(self.button)
+        
+        NSLayoutConstraint.activate([self.textLabel.leadingAnchor.constraint(equalTo: self.layoutMarginsGuide.leadingAnchor),
+                                     self.textLabel.bottomAnchor.constraint(equalTo: self.bottomAnchor)])
+        
+        NSLayoutConstraint.activate([self.button.trailingAnchor.constraint(equalTo: self.layoutMarginsGuide.trailingAnchor),
+                                     self.button.firstBaselineAnchor.constraint(equalTo: self.textLabel.firstBaselineAnchor)])
+        
+        self.preservesSuperviewLayoutMargins = true
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+}

AltStore/My Apps/InstalledAppsCollectionHeaderView.xib

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="16092.1" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16082.1"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <collectionReusableView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" reuseIdentifier="InstalledAppsHeader" id="eyV-eW-aLi" customClass="InstalledAppsCollectionHeaderView" customModule="AltStore" customModuleProvider="target">
+            <rect key="frame" x="0.0" y="0.0" width="375" height="50"/>
+            <autoresizingMask key="autoresizingMask"/>
+            <subviews>
+                <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Installed" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="zhW-Re-WNf">
+                    <rect key="frame" x="20" y="21" width="96.5" height="29"/>
+                    <fontDescription key="fontDescription" type="boldSystem" pointSize="24"/>
+                    <nil key="textColor"/>
+                    <nil key="highlightedColor"/>
+                </label>
+                <button opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="1000" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="iMf-wr-wRV">
+                    <rect key="frame" x="274" y="23" width="81" height="32"/>
+                    <fontDescription key="fontDescription" type="system" weight="medium" pointSize="16"/>
+                    <state key="normal" title="Refresh All"/>
+                </button>
+            </subviews>
+            <constraints>
+                <constraint firstItem="zhW-Re-WNf" firstAttribute="leading" secondItem="eyV-eW-aLi" secondAttribute="leading" constant="20" id="Fo0-fL-UpD"/>
+                <constraint firstAttribute="bottom" secondItem="zhW-Re-WNf" secondAttribute="bottom" id="OWw-FY-KOh"/>
+                <constraint firstAttribute="trailing" secondItem="iMf-wr-wRV" secondAttribute="trailing" constant="20" id="dJM-7c-k31"/>
+                <constraint firstItem="iMf-wr-wRV" firstAttribute="firstBaseline" secondItem="zhW-Re-WNf" secondAttribute="firstBaseline" id="iU7-F2-XDu"/>
+            </constraints>
+            <viewLayoutGuide key="safeArea" id="N3q-SZ-Vyv"/>
+            <connections>
+                <outlet property="button" destination="iMf-wr-wRV" id="kWT-cc-BjS"/>
+                <outlet property="textLabel" destination="zhW-Re-WNf" id="UOg-4X-rWx"/>
+            </connections>
+            <point key="canvasLocation" x="19.565217391304348" y="30.803571428571427"/>
+        </collectionReusableView>
+    </objects>
+</document>

AltStore/My Apps/MyAppsComponents.swift

@@ -0,0 +1,97 @@
+//
+//  MyAppsComponents.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/17/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+import Roxas
+
+class InstalledAppCollectionViewCell: UICollectionViewCell
+{
+    private(set) var deactivateBadge: UIView?
+    
+    @IBOutlet var bannerView: AppBannerView!
+    
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.contentView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        self.contentView.preservesSuperviewLayoutMargins = true
+        
+        if #available(iOS 13.0, *)
+        {
+            let deactivateBadge = UIView()
+            deactivateBadge.translatesAutoresizingMaskIntoConstraints = false
+            deactivateBadge.isHidden = true
+            self.addSubview(deactivateBadge)
+            
+            // Solid background to make the X opaque white.
+            let backgroundView = UIView()
+            backgroundView.translatesAutoresizingMaskIntoConstraints = false
+            backgroundView.backgroundColor = .white
+            deactivateBadge.addSubview(backgroundView)
+                        
+            let badgeView = UIImageView(image: UIImage(systemName: "xmark.circle.fill"))
+            badgeView.preferredSymbolConfiguration = UIImage.SymbolConfiguration(scale: .large)
+            badgeView.tintColor = .systemRed
+            deactivateBadge.addSubview(badgeView, pinningEdgesWith: .zero)
+            
+            NSLayoutConstraint.activate([
+                deactivateBadge.centerXAnchor.constraint(equalTo: self.bannerView.iconImageView.trailingAnchor),
+                deactivateBadge.centerYAnchor.constraint(equalTo: self.bannerView.iconImageView.topAnchor),
+                
+                backgroundView.centerXAnchor.constraint(equalTo: badgeView.centerXAnchor),
+                backgroundView.centerYAnchor.constraint(equalTo: badgeView.centerYAnchor),
+                backgroundView.widthAnchor.constraint(equalTo: badgeView.widthAnchor, multiplier: 0.5),
+                backgroundView.heightAnchor.constraint(equalTo: badgeView.heightAnchor, multiplier: 0.5)
+            ])
+            
+            self.deactivateBadge = deactivateBadge
+        }
+    }
+}
+
+class InstalledAppsCollectionFooterView: UICollectionReusableView
+{
+    @IBOutlet var textLabel: UILabel!
+    @IBOutlet var button: UIButton!
+}
+
+class NoUpdatesCollectionViewCell: UICollectionViewCell
+{
+    @IBOutlet var blurView: UIVisualEffectView!
+    
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.contentView.preservesSuperviewLayoutMargins = true
+    }
+}
+
+class UpdatesCollectionHeaderView: UICollectionReusableView
+{
+    let button = PillButton(type: .system)
+    
+    override init(frame: CGRect)
+    {
+        super.init(frame: frame)
+        
+        self.button.translatesAutoresizingMaskIntoConstraints = false
+        self.button.setTitle(">", for: .normal)
+        self.addSubview(self.button)
+        
+        NSLayoutConstraint.activate([self.button.trailingAnchor.constraint(equalTo: self.trailingAnchor, constant: -20),
+                                     self.button.topAnchor.constraint(equalTo: self.topAnchor),
+                                     self.button.widthAnchor.constraint(equalToConstant: 50),
+                                     self.button.heightAnchor.constraint(equalToConstant: 26)])
+    }
+    
+    required init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+}

AltStore/My Apps/UpdateCollectionViewCell.swift

@@ -0,0 +1,108 @@
+//
+//  UpdateCollectionViewCell.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/16/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+extension UpdateCollectionViewCell
+{
+    enum Mode
+    {
+        case collapsed
+        case expanded
+    }
+}
+
+@objc class UpdateCollectionViewCell: UICollectionViewCell
+{
+    var mode: Mode = .expanded {
+        didSet {
+            self.update()
+        }
+    }
+    
+    @IBOutlet var bannerView: AppBannerView!
+    @IBOutlet var versionDescriptionTitleLabel: UILabel!
+    @IBOutlet var versionDescriptionTextView: CollapsingTextView!
+    
+    @IBOutlet private var blurView: UIVisualEffectView!
+    
+    private var originalTintColor: UIColor?
+            
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        // Prevent temporary unsatisfiable constraint errors due to UIView-Encapsulated-Layout constraints.
+        self.contentView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        self.contentView.preservesSuperviewLayoutMargins = true
+        
+        self.bannerView.backgroundEffectView.isHidden = true
+        self.bannerView.button.setTitle(NSLocalizedString("UPDATE", comment: ""), for: .normal)
+                
+        self.blurView.layer.cornerRadius = 20
+        self.blurView.layer.masksToBounds = true
+        
+        self.update()
+    }
+    
+    override func tintColorDidChange()
+    {
+        super.tintColorDidChange()
+        
+        if self.tintAdjustmentMode != .dimmed
+        {
+            self.originalTintColor = self.tintColor
+        }
+        
+        self.update()
+    }
+    
+    override func apply(_ layoutAttributes: UICollectionViewLayoutAttributes)
+    {
+        // Animates transition to new attributes.
+        let animator = UIViewPropertyAnimator(springTimingParameters: UISpringTimingParameters()) {
+            self.layoutIfNeeded()
+        }
+        animator.startAnimation()
+    }
+    
+    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView?
+    {
+        let view = super.hitTest(point, with: event)
+        
+        if view == self.versionDescriptionTextView
+        {
+            // Forward touches on the text view (but not on the nested "more" button)
+            // so cell selection works as expected.
+            return self
+        }
+        else
+        {
+            return view
+        }
+    }
+}
+
+private extension UpdateCollectionViewCell
+{
+    func update()
+    {
+        switch self.mode
+        {
+        case .collapsed: self.versionDescriptionTextView.isCollapsed = true
+        case .expanded: self.versionDescriptionTextView.isCollapsed = false
+        }
+        
+        self.versionDescriptionTitleLabel.textColor = self.originalTintColor ?? self.tintColor
+        self.blurView.backgroundColor = self.originalTintColor ?? self.tintColor
+        self.bannerView.button.progressTintColor = self.originalTintColor ?? self.tintColor
+        
+        self.setNeedsLayout()
+        self.layoutIfNeeded()
+    }
+}

AltStore/My Apps/UpdateCollectionViewCell.xib

@@ -0,0 +1,121 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
+        <capability name="Named colors" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <collectionViewCell opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" reuseIdentifier="UpdateCell" id="Kqf-Pv-ca3" customClass="UpdateCollectionViewCell" customModule="AltStore" customModuleProvider="target">
+            <rect key="frame" x="0.0" y="0.0" width="375" height="125"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+            <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO">
+                <rect key="frame" x="0.0" y="0.0" width="375" height="125"/>
+                <autoresizingMask key="autoresizingMask"/>
+                <subviews>
+                    <view contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" translatesAutoresizingMaskIntoConstraints="NO" id="dmf-hv-bwx">
+                        <rect key="frame" x="16" y="0.0" width="343" height="125"/>
+                        <subviews>
+                            <visualEffectView opaque="NO" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="1xN-9h-DFd">
+                                <rect key="frame" x="0.0" y="0.0" width="343" height="125"/>
+                                <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" id="9iq-CR-Xc4">
+                                    <rect key="frame" x="0.0" y="0.0" width="343" height="125"/>
+                                    <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                    <subviews>
+                                        <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" translatesAutoresizingMaskIntoConstraints="NO" id="uYl-PH-DuP">
+                                            <rect key="frame" x="0.0" y="0.0" width="343" height="125"/>
+                                            <subviews>
+                                                <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Nop-pL-Icx" customClass="AppBannerView" customModule="AltStore" customModuleProvider="target">
+                                                    <rect key="frame" x="0.0" y="0.0" width="343" height="88"/>
+                                                    <constraints>
+                                                        <constraint firstAttribute="height" constant="88" id="EPP-7O-1Ad"/>
+                                                    </constraints>
+                                                </view>
+                                                <stackView opaque="NO" contentMode="scaleToFill" alignment="firstBaseline" spacing="10" translatesAutoresizingMaskIntoConstraints="NO" id="RSR-5W-7tt" userLabel="Release Notes">
+                                                    <rect key="frame" x="0.0" y="88" width="343" height="37"/>
+                                                    <subviews>
+                                                        <visualEffectView opaque="NO" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="RKU-pY-wmQ">
+                                                            <rect key="frame" x="15" y="0.0" width="65" height="22"/>
+                                                            <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" id="4GQ-XP-i7X">
+                                                                <rect key="frame" x="0.0" y="0.0" width="65" height="22"/>
+                                                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                                <subviews>
+                                                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="1000" verticalHuggingPriority="251" text="What's New" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="h1u-nj-qsP">
+                                                                        <rect key="frame" x="0.0" y="0.0" width="65" height="22"/>
+                                                                        <constraints>
+                                                                            <constraint firstAttribute="width" constant="65" id="C7Y-nh-TKJ"/>
+                                                                        </constraints>
+                                                                        <fontDescription key="fontDescription" type="system" pointSize="11"/>
+                                                                        <nil key="textColor"/>
+                                                                        <nil key="highlightedColor"/>
+                                                                    </label>
+                                                                </subviews>
+                                                                <constraints>
+                                                                    <constraint firstItem="h1u-nj-qsP" firstAttribute="leading" secondItem="4GQ-XP-i7X" secondAttribute="leading" id="3cO-Mj-Yua"/>
+                                                                    <constraint firstAttribute="trailing" secondItem="h1u-nj-qsP" secondAttribute="trailing" id="Hek-OE-YMc"/>
+                                                                    <constraint firstAttribute="bottom" secondItem="h1u-nj-qsP" secondAttribute="bottom" id="bLg-Ut-aEb"/>
+                                                                    <constraint firstItem="h1u-nj-qsP" firstAttribute="top" secondItem="4GQ-XP-i7X" secondAttribute="top" id="beL-ob-CQ7"/>
+                                                                </constraints>
+                                                            </view>
+                                                            <vibrancyEffect style="secondaryLabel">
+                                                                <blurEffect style="systemChromeMaterial"/>
+                                                            </vibrancyEffect>
+                                                        </visualEffectView>
+                                                        <textView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" scrollEnabled="NO" editable="NO" text="Version Notes" textAlignment="natural" selectable="NO" translatesAutoresizingMaskIntoConstraints="NO" id="rNs-2O-k3V" customClass="CollapsingTextView" customModule="AltStore" customModuleProvider="target">
+                                                            <rect key="frame" x="90" y="0.0" width="238" height="22"/>
+                                                            <color key="textColor" systemColor="secondaryLabelColor" red="0.23529411759999999" green="0.23529411759999999" blue="0.26274509800000001" alpha="0.59999999999999998" colorSpace="custom" customColorSpace="sRGB"/>
+                                                            <fontDescription key="fontDescription" type="system" pointSize="13"/>
+                                                            <textInputTraits key="textInputTraits" autocapitalizationType="sentences"/>
+                                                        </textView>
+                                                    </subviews>
+                                                    <edgeInsets key="layoutMargins" top="0.0" left="15" bottom="15" right="15"/>
+                                                </stackView>
+                                            </subviews>
+                                        </stackView>
+                                    </subviews>
+                                    <color key="backgroundColor" name="BlurTint"/>
+                                    <constraints>
+                                        <constraint firstAttribute="trailing" secondItem="uYl-PH-DuP" secondAttribute="trailing" id="51O-j6-eoh"/>
+                                        <constraint firstAttribute="bottom" secondItem="uYl-PH-DuP" secondAttribute="bottom" id="IGs-MS-vnM"/>
+                                        <constraint firstItem="uYl-PH-DuP" firstAttribute="top" secondItem="9iq-CR-Xc4" secondAttribute="top" id="hnr-wG-XRY"/>
+                                        <constraint firstItem="uYl-PH-DuP" firstAttribute="leading" secondItem="9iq-CR-Xc4" secondAttribute="leading" id="usR-Ia-LMy"/>
+                                    </constraints>
+                                </view>
+                                <blurEffect style="systemChromeMaterial"/>
+                            </visualEffectView>
+                        </subviews>
+                        <constraints>
+                            <constraint firstItem="1xN-9h-DFd" firstAttribute="top" secondItem="dmf-hv-bwx" secondAttribute="top" id="6rb-Bw-UVn"/>
+                            <constraint firstAttribute="bottom" secondItem="1xN-9h-DFd" secondAttribute="bottom" id="dnI-NB-BKv"/>
+                            <constraint firstAttribute="trailing" secondItem="1xN-9h-DFd" secondAttribute="trailing" id="kbY-Z6-V86"/>
+                            <constraint firstItem="1xN-9h-DFd" firstAttribute="leading" secondItem="dmf-hv-bwx" secondAttribute="leading" id="ofk-a7-m0Y"/>
+                        </constraints>
+                        <edgeInsets key="layoutMargins" top="20" left="20" bottom="20" right="20"/>
+                    </view>
+                </subviews>
+            </view>
+            <constraints>
+                <constraint firstItem="dmf-hv-bwx" firstAttribute="top" secondItem="Kqf-Pv-ca3" secondAttribute="top" id="7yY-05-eHt"/>
+                <constraint firstAttribute="bottom" secondItem="dmf-hv-bwx" secondAttribute="bottom" id="Rrx-0k-6He"/>
+                <constraint firstItem="dmf-hv-bwx" firstAttribute="leading" secondItem="Kqf-Pv-ca3" secondAttribute="leadingMargin" id="W0V-sT-tXo"/>
+                <constraint firstAttribute="trailingMargin" secondItem="dmf-hv-bwx" secondAttribute="trailing" id="tgy-Zi-iZF"/>
+            </constraints>
+            <connections>
+                <outlet property="bannerView" destination="Nop-pL-Icx" id="GiX-K1-5oz"/>
+                <outlet property="blurView" destination="1xN-9h-DFd" id="HBI-nT-xYh"/>
+                <outlet property="versionDescriptionTextView" destination="rNs-2O-k3V" id="4TC-A3-oxb"/>
+                <outlet property="versionDescriptionTitleLabel" destination="h1u-nj-qsP" id="dnz-Yv-BdY"/>
+            </connections>
+            <point key="canvasLocation" x="618.39999999999998" y="96.251874062968525"/>
+        </collectionViewCell>
+    </objects>
+    <resources>
+        <namedColor name="BlurTint">
+            <color red="1" green="1" blue="1" alpha="0.29999999999999999" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
+    </resources>
+</document>

AltStore/News/NewsCollectionViewCell.swift

@@ -0,0 +1,30 @@
+//
+//  NewsCollectionViewCell.swift
+//  AltStore
+//
+//  Created by Riley Testut on 8/29/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class NewsCollectionViewCell: UICollectionViewCell
+{
+    @IBOutlet var titleLabel: UILabel!
+    @IBOutlet var captionLabel: UILabel!
+    @IBOutlet var imageView: UIImageView!
+    @IBOutlet var contentBackgroundView: UIView!
+    
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.contentView.preservesSuperviewLayoutMargins = true
+        
+        self.contentBackgroundView.layer.cornerRadius = 30
+        self.contentBackgroundView.clipsToBounds = true
+        
+        self.imageView.layer.cornerRadius = 30
+        self.imageView.clipsToBounds = true
+    }
+}

AltStore/News/NewsCollectionViewCell.xib

@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+    <device id="retina4_7" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <collectionViewCell opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" id="wRF-2R-NUG" customClass="NewsCollectionViewCell" customModule="AltStore" customModuleProvider="target">
+            <rect key="frame" x="0.0" y="0.0" width="335" height="299"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+            <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO">
+                <rect key="frame" x="0.0" y="0.0" width="335" height="299"/>
+                <autoresizingMask key="autoresizingMask"/>
+                <subviews>
+                    <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="azr-Ea-luN">
+                        <rect key="frame" x="16" y="0.0" width="303" height="299"/>
+                    </view>
+                    <view contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" insetsLayoutMarginsFromSafeArea="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Xba-Qs-SQo">
+                        <rect key="frame" x="16" y="0.0" width="303" height="299"/>
+                        <subviews>
+                            <stackView opaque="NO" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" axis="vertical" translatesAutoresizingMaskIntoConstraints="NO" id="tNk-9u-1tk">
+                                <rect key="frame" x="0.0" y="0.0" width="303" height="298.5"/>
+                                <subviews>
+                                    <stackView opaque="NO" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" axis="vertical" alignment="top" spacing="10" translatesAutoresizingMaskIntoConstraints="NO" id="akF-Tr-G5M">
+                                        <rect key="frame" x="0.0" y="0.0" width="303" height="117.5"/>
+                                        <subviews>
+                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" verticalCompressionResistancePriority="1000" text="Delta" textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="2" baselineAdjustment="alignBaselines" minimumScaleFactor="0.5" translatesAutoresizingMaskIntoConstraints="NO" id="AkN-BE-I1a">
+                                                <rect key="frame" x="25" y="25" width="54.5" height="26.5"/>
+                                                <fontDescription key="fontDescription" type="boldSystem" pointSize="22"/>
+                                                <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                <nil key="highlightedColor"/>
+                                            </label>
+                                            <label opaque="NO" userInteractionEnabled="NO" alpha="0.75" contentMode="left" horizontalHuggingPriority="251" verticalCompressionResistancePriority="999" text="Label" textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="SHB-kk-YhL">
+                                                <rect key="frame" x="25" y="61.5" width="35.5" height="36"/>
+                                                <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                                <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                                <nil key="highlightedColor"/>
+                                            </label>
+                                        </subviews>
+                                        <edgeInsets key="layoutMargins" top="25" left="25" bottom="20" right="25"/>
+                                    </stackView>
+                                    <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" placeholderIntrinsicWidth="335" placeholderIntrinsicHeight="200" translatesAutoresizingMaskIntoConstraints="NO" id="l36-Bm-De0">
+                                        <rect key="frame" x="0.0" y="117.5" width="303" height="181"/>
+                                        <constraints>
+                                            <constraint firstAttribute="width" secondItem="l36-Bm-De0" secondAttribute="height" multiplier="67:40" priority="999" id="QGD-YE-Hw2"/>
+                                        </constraints>
+                                    </imageView>
+                                </subviews>
+                            </stackView>
+                        </subviews>
+                        <constraints>
+                            <constraint firstItem="tNk-9u-1tk" firstAttribute="top" secondItem="Xba-Qs-SQo" secondAttribute="top" id="Dw8-lF-Fzl"/>
+                            <constraint firstAttribute="trailing" secondItem="tNk-9u-1tk" secondAttribute="trailing" id="Zt8-Wa-oB9"/>
+                            <constraint firstItem="tNk-9u-1tk" firstAttribute="leading" secondItem="Xba-Qs-SQo" secondAttribute="leading" id="m6p-Ee-dTh"/>
+                            <constraint firstAttribute="bottom" secondItem="tNk-9u-1tk" secondAttribute="bottom" constant="0.5" id="v9g-yC-db9"/>
+                        </constraints>
+                    </view>
+                </subviews>
+            </view>
+            <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+            <constraints>
+                <constraint firstItem="Xba-Qs-SQo" firstAttribute="top" secondItem="wRF-2R-NUG" secondAttribute="top" id="0xe-Rt-MhF"/>
+                <constraint firstItem="Xba-Qs-SQo" firstAttribute="leading" secondItem="wRF-2R-NUG" secondAttribute="leadingMargin" id="5MO-c0-5rG"/>
+                <constraint firstItem="azr-Ea-luN" firstAttribute="leading" secondItem="wRF-2R-NUG" secondAttribute="leadingMargin" id="8Ck-dI-nJy"/>
+                <constraint firstAttribute="trailingMargin" secondItem="Xba-Qs-SQo" secondAttribute="trailing" id="DNL-Jj-3By"/>
+                <constraint firstAttribute="bottom" secondItem="Xba-Qs-SQo" secondAttribute="bottom" id="Ecj-fN-hZv"/>
+                <constraint firstAttribute="bottom" secondItem="azr-Ea-luN" secondAttribute="bottom" priority="999" id="e56-UD-DRT"/>
+                <constraint firstItem="azr-Ea-luN" firstAttribute="top" secondItem="wRF-2R-NUG" secondAttribute="top" id="h2k-WE-Esg"/>
+                <constraint firstAttribute="trailingMargin" secondItem="azr-Ea-luN" secondAttribute="trailing" priority="999" id="hsS-zC-A58"/>
+            </constraints>
+            <connections>
+                <outlet property="captionLabel" destination="SHB-kk-YhL" id="zY3-qQ-9oY"/>
+                <outlet property="contentBackgroundView" destination="azr-Ea-luN" id="2Pl-11-YvR"/>
+                <outlet property="imageView" destination="l36-Bm-De0" id="3do-aQ-5r4"/>
+                <outlet property="titleLabel" destination="AkN-BE-I1a" id="hA2-3O-q5J"/>
+            </connections>
+            <point key="canvasLocation" x="138" y="153"/>
+        </collectionViewCell>
+    </objects>
+</document>

AltStore/News/NewsViewController.swift

@@ -0,0 +1,526 @@
+//
+//  NewsViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 8/29/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+import SafariServices
+
+import AltStoreCore
+import Roxas
+
+import Nuke
+
+private class AppBannerFooterView: UICollectionReusableView
+{
+    let bannerView = AppBannerView(frame: .zero)
+    let tapGestureRecognizer = UITapGestureRecognizer(target: nil, action: nil)
+    
+    override init(frame: CGRect)
+    {
+        super.init(frame: frame)
+        
+        self.addGestureRecognizer(self.tapGestureRecognizer)
+        
+        self.bannerView.translatesAutoresizingMaskIntoConstraints = false
+        self.addSubview(self.bannerView)
+        
+        NSLayoutConstraint.activate([
+            self.bannerView.topAnchor.constraint(equalTo: self.topAnchor),
+            self.bannerView.bottomAnchor.constraint(equalTo: self.bottomAnchor),
+            self.bannerView.leadingAnchor.constraint(equalTo: self.layoutMarginsGuide.leadingAnchor),
+            self.bannerView.trailingAnchor.constraint(equalTo: self.layoutMarginsGuide.trailingAnchor)
+        ])
+    }
+    
+    required init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+}
+
+class NewsViewController: UICollectionViewController
+{
+    private lazy var dataSource = self.makeDataSource()
+    private lazy var placeholderView = RSTPlaceholderView(frame: .zero)
+    
+    private var prototypeCell: NewsCollectionViewCell!
+    
+    private var loadingState: LoadingState = .loading {
+        didSet {
+            self.update()
+        }
+    }
+    
+    // Cache
+    private var cachedCellSizes = [String: CGSize]()
+    
+    required init?(coder: NSCoder)
+    {
+        super.init(coder: coder)
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(NewsViewController.importApp(_:)), name: AppDelegate.importAppDeepLinkNotification, object: nil)
+    }
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+        
+        self.prototypeCell = NewsCollectionViewCell.instantiate(with: NewsCollectionViewCell.nib!)
+        self.prototypeCell.contentView.translatesAutoresizingMaskIntoConstraints = false
+        
+        self.collectionView.dataSource = self.dataSource
+        self.collectionView.prefetchDataSource = self.dataSource
+        
+        self.collectionView.register(NewsCollectionViewCell.nib, forCellWithReuseIdentifier: RSTCellContentGenericCellIdentifier)
+        self.collectionView.register(AppBannerFooterView.self, forSupplementaryViewOfKind: UICollectionView.elementKindSectionFooter, withReuseIdentifier: "AppBanner")
+        
+        self.registerForPreviewing(with: self, sourceView: self.collectionView)
+        
+        self.update()
+    }
+    
+    override func viewWillAppear(_ animated: Bool)
+    {
+        super.viewWillAppear(animated)
+        
+        self.fetchSource()
+    }
+    
+    override func viewWillLayoutSubviews()
+    {
+        super.viewWillLayoutSubviews()
+        
+        if self.collectionView.contentInset.bottom != 20
+        {
+            // Triggers collection view update in iOS 13, which crashes if we do it in viewDidLoad()
+            // since the database might not be loaded yet.
+            self.collectionView.contentInset.bottom = 20
+        }
+    }
+    
+    @IBAction private func unwindFromSourcesViewController(_ segue: UIStoryboardSegue)
+    {
+        self.fetchSource()
+    }
+}
+
+private extension NewsViewController
+{
+    func makeDataSource() -> RSTFetchedResultsCollectionViewPrefetchingDataSource<NewsItem, UIImage>
+    {
+        let fetchRequest = NewsItem.fetchRequest() as NSFetchRequest<NewsItem>
+        fetchRequest.sortDescriptors = [NSSortDescriptor(keyPath: \NewsItem.date, ascending: false),
+                                        NSSortDescriptor(keyPath: \NewsItem.sortIndex, ascending: true),
+                                        NSSortDescriptor(keyPath: \NewsItem.sourceIdentifier, ascending: true)]
+        
+        let fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: DatabaseManager.shared.viewContext, sectionNameKeyPath: #keyPath(NewsItem.objectID), cacheName: nil)
+        
+        let dataSource = RSTFetchedResultsCollectionViewPrefetchingDataSource<NewsItem, UIImage>(fetchedResultsController: fetchedResultsController)
+        dataSource.proxy = self
+        dataSource.cellConfigurationHandler = { (cell, newsItem, indexPath) in
+            let cell = cell as! NewsCollectionViewCell
+            cell.layoutMargins.left = self.view.layoutMargins.left
+            cell.layoutMargins.right = self.view.layoutMargins.right
+            
+            cell.titleLabel.text = newsItem.title
+            cell.captionLabel.text = newsItem.caption
+            cell.contentBackgroundView.backgroundColor = newsItem.tintColor
+            
+            cell.imageView.image = nil
+            
+            if newsItem.imageURL != nil
+            {
+                cell.imageView.isIndicatingActivity = true
+                cell.imageView.isHidden = false
+            }
+            else
+            {
+                cell.imageView.isIndicatingActivity = false
+                cell.imageView.isHidden = true
+            }
+            
+            cell.isAccessibilityElement = true
+            cell.accessibilityLabel = (cell.titleLabel.text ?? "") + ". " + (cell.captionLabel.text ?? "")
+            
+            if newsItem.storeApp != nil || newsItem.externalURL != nil
+            {
+                cell.accessibilityTraits.insert(.button)
+            }
+            else
+            {
+                cell.accessibilityTraits.remove(.button)
+            }
+        }
+        dataSource.prefetchHandler = { (newsItem, indexPath, completionHandler) in
+            guard let imageURL = newsItem.imageURL else { return nil }
+            
+            return RSTAsyncBlockOperation() { (operation) in
+                ImagePipeline.shared.loadImage(with: imageURL, progress: nil, completion: { (response, error) in
+                    guard !operation.isCancelled else { return operation.finish() }
+                    
+                    if let image = response?.image
+                    {
+                        completionHandler(image, nil)
+                    }
+                    else
+                    {
+                        completionHandler(nil, error)
+                    }
+                })
+            }
+        }
+        dataSource.prefetchCompletionHandler = { (cell, image, indexPath, error) in
+            let cell = cell as! NewsCollectionViewCell
+            cell.imageView.isIndicatingActivity = false
+            cell.imageView.image = image
+            
+            if let error = error
+            {
+                print("Error loading image:", error)
+            }
+        }
+        
+        dataSource.placeholderView = self.placeholderView
+        
+        return dataSource
+    }
+
+    func fetchSource()
+    {
+        self.loadingState = .loading
+        
+        AppManager.shared.fetchSources() { (result) in
+            do
+            {
+                do
+                {
+                    let (_, context) = try result.get()
+                    try context.save()
+                    
+                    DispatchQueue.main.async {
+                        self.loadingState = .finished(.success(()))
+                    }
+                }
+                catch let error as AppManager.FetchSourcesError
+                {
+                    try error.managedObjectContext?.save()
+                    throw error
+                }
+            }
+            catch
+            {
+                DispatchQueue.main.async {
+                    if self.dataSource.itemCount > 0
+                    {
+                        let toastView = ToastView(error: error)
+                        toastView.addTarget(nil, action: #selector(TabBarController.presentSources), for: .touchUpInside)
+                        toastView.show(in: self)
+                    }
+                    
+                    self.loadingState = .finished(.failure(error))
+                }
+            }
+        }
+    }
+    
+    func update()
+    {
+        switch self.loadingState
+        {
+        case .loading:
+            self.placeholderView.textLabel.isHidden = true
+            self.placeholderView.detailTextLabel.isHidden = false
+            
+            self.placeholderView.detailTextLabel.text = NSLocalizedString("Loading...", comment: "")
+            
+            self.placeholderView.activityIndicatorView.startAnimating()
+            
+        case .finished(.failure(let error)):
+            self.placeholderView.textLabel.isHidden = false
+            self.placeholderView.detailTextLabel.isHidden = false
+            
+            self.placeholderView.textLabel.text = NSLocalizedString("Unable to Fetch News", comment: "")
+            self.placeholderView.detailTextLabel.text = error.localizedDescription
+            
+            self.placeholderView.activityIndicatorView.stopAnimating()
+            
+        case .finished(.success):
+            self.placeholderView.textLabel.isHidden = true
+            self.placeholderView.detailTextLabel.isHidden = true
+            
+            self.placeholderView.activityIndicatorView.stopAnimating()
+        }
+    }
+}
+
+private extension NewsViewController
+{
+    @objc func handleTapGesture(_ gestureRecognizer: UITapGestureRecognizer)
+    {
+        guard let footerView = gestureRecognizer.view as? UICollectionReusableView else { return }
+        
+        let indexPaths = self.collectionView.indexPathsForVisibleSupplementaryElements(ofKind: UICollectionView.elementKindSectionFooter)
+        
+        guard let indexPath = indexPaths.first(where: { (indexPath) -> Bool in
+            let supplementaryView = self.collectionView.supplementaryView(forElementKind: UICollectionView.elementKindSectionFooter, at: indexPath)
+            return supplementaryView == footerView
+        }) else { return }
+        
+        let item = self.dataSource.item(at: indexPath)
+        guard let storeApp = item.storeApp else { return }
+        
+        let appViewController = AppViewController.makeAppViewController(app: storeApp)
+        self.navigationController?.pushViewController(appViewController, animated: true)
+    }
+    
+    @objc func performAppAction(_ sender: PillButton)
+    {
+        let point = self.collectionView.convert(sender.center, from: sender.superview)
+        let indexPaths = self.collectionView.indexPathsForVisibleSupplementaryElements(ofKind: UICollectionView.elementKindSectionFooter)
+        
+        guard let indexPath = indexPaths.first(where: { (indexPath) -> Bool in
+            let supplementaryView = self.collectionView.supplementaryView(forElementKind: UICollectionView.elementKindSectionFooter, at: indexPath)
+            return supplementaryView?.frame.contains(point) ?? false
+        }) else { return }
+        
+        let app = self.dataSource.item(at: indexPath)
+        guard let storeApp = app.storeApp else { return }
+        
+        if let installedApp = app.storeApp?.installedApp
+        {
+            self.open(installedApp)
+        }
+        else
+        {
+            self.install(storeApp, at: indexPath)
+        }
+    }
+    
+    @objc func install(_ storeApp: StoreApp, at indexPath: IndexPath)
+    {
+        let previousProgress = AppManager.shared.installationProgress(for: storeApp)
+        guard previousProgress == nil else {
+            previousProgress?.cancel()
+            return
+        }
+        
+        _ = AppManager.shared.install(storeApp, presentingViewController: self) { (result) in
+            DispatchQueue.main.async {
+                switch result
+                {
+                case .failure(OperationError.cancelled): break // Ignore
+                case .failure(let error):
+                    let toastView = ToastView(error: error)
+                    toastView.show(in: self)
+                    
+                case .success: print("Installed app:", storeApp.bundleIdentifier)
+                }
+                
+                UIView.performWithoutAnimation {
+                    self.collectionView.reloadSections(IndexSet(integer: indexPath.section))
+                }
+            }
+        }
+        
+        UIView.performWithoutAnimation {
+            self.collectionView.reloadSections(IndexSet(integer: indexPath.section))
+        }
+    }
+    
+    func open(_ installedApp: InstalledApp)
+    {
+        UIApplication.shared.open(installedApp.openAppURL)
+    }
+}
+
+private extension NewsViewController
+{
+    @objc func importApp(_ notification: Notification)
+    {
+        self.presentedViewController?.dismiss(animated: true, completion: nil)
+    }
+}
+
+extension NewsViewController
+{
+    override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
+    {
+        let newsItem = self.dataSource.item(at: indexPath)
+        
+        if let externalURL = newsItem.externalURL
+        {
+            let safariViewController = SFSafariViewController(url: externalURL)
+            safariViewController.preferredControlTintColor = newsItem.tintColor
+            self.present(safariViewController, animated: true, completion: nil)
+        }
+        else if let storeApp = newsItem.storeApp
+        {
+            let appViewController = AppViewController.makeAppViewController(app: storeApp)
+            self.navigationController?.pushViewController(appViewController, animated: true)
+        }
+    }
+    
+    override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView
+    {
+        let item = self.dataSource.item(at: indexPath)
+        
+        let footerView = collectionView.dequeueReusableSupplementaryView(ofKind: UICollectionView.elementKindSectionFooter, withReuseIdentifier: "AppBanner", for: indexPath) as! AppBannerFooterView
+        guard let storeApp = item.storeApp else { return footerView }
+        
+        footerView.layoutMargins.left = self.view.layoutMargins.left
+        footerView.layoutMargins.right = self.view.layoutMargins.right
+        
+        footerView.bannerView.configure(for: storeApp)
+        
+        footerView.bannerView.tintColor = storeApp.tintColor
+        footerView.bannerView.button.addTarget(self, action: #selector(NewsViewController.performAppAction(_:)), for: .primaryActionTriggered)
+        footerView.tapGestureRecognizer.addTarget(self, action: #selector(NewsViewController.handleTapGesture(_:)))
+        
+        footerView.bannerView.button.isIndicatingActivity = false
+        
+        if storeApp.installedApp == nil
+        {
+            let buttonTitle = NSLocalizedString("Free", comment: "")
+            footerView.bannerView.button.setTitle(buttonTitle.uppercased(), for: .normal)
+            footerView.bannerView.button.accessibilityLabel = String(format: NSLocalizedString("Download %@", comment: ""), storeApp.name)
+            footerView.bannerView.button.accessibilityValue = buttonTitle
+            
+            let progress = AppManager.shared.installationProgress(for: storeApp)
+            footerView.bannerView.button.progress = progress
+            
+            if Date() < storeApp.versionDate
+            {
+                footerView.bannerView.button.countdownDate = storeApp.versionDate
+            }
+            else
+            {
+                footerView.bannerView.button.countdownDate = nil
+            }
+        }
+        else
+        {
+            footerView.bannerView.button.setTitle(NSLocalizedString("OPEN", comment: ""), for: .normal)
+            footerView.bannerView.button.accessibilityLabel = String(format: NSLocalizedString("Open %@", comment: ""), storeApp.name)
+            footerView.bannerView.button.accessibilityValue = nil
+            footerView.bannerView.button.progress = nil
+            footerView.bannerView.button.countdownDate = nil
+        }
+        
+        Nuke.loadImage(with: storeApp.iconURL, into: footerView.bannerView.iconImageView)
+        
+        return footerView
+    }
+}
+
+extension NewsViewController: UICollectionViewDelegateFlowLayout
+{
+    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
+    {        
+        let item = self.dataSource.item(at: indexPath)
+        
+        if let previousSize = self.cachedCellSizes[item.identifier]
+        {
+            return previousSize
+        }
+        
+        let widthConstraint = self.prototypeCell.contentView.widthAnchor.constraint(equalToConstant: collectionView.bounds.width)
+        NSLayoutConstraint.activate([widthConstraint])
+        defer { NSLayoutConstraint.deactivate([widthConstraint]) }
+        
+        self.dataSource.cellConfigurationHandler(self.prototypeCell, item, indexPath)
+        
+        let size = self.prototypeCell.contentView.systemLayoutSizeFitting(UIView.layoutFittingCompressedSize)
+        self.cachedCellSizes[item.identifier] = size
+        return size
+    }
+    
+    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForFooterInSection section: Int) -> CGSize
+    {
+        let item = self.dataSource.item(at: IndexPath(row: 0, section: section))
+        
+        if item.storeApp != nil
+        {
+            return CGSize(width: 88, height: 88)
+        }
+        else
+        {
+            return .zero
+        }
+    }
+    
+    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets
+    {
+        var insets = UIEdgeInsets(top: 30, left: 0, bottom: 13, right: 0)
+        
+        if section == 0
+        {
+            insets.top = 10
+        }
+        
+        return insets
+    }
+}
+
+extension NewsViewController: UIViewControllerPreviewingDelegate
+{
+    func previewingContext(_ previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController?
+    {
+        if let indexPath = self.collectionView.indexPathForItem(at: location), let cell = self.collectionView.cellForItem(at: indexPath)
+        {
+            // Previewing news item.
+            
+            previewingContext.sourceRect = cell.frame
+            
+            let newsItem = self.dataSource.item(at: indexPath)
+            
+            if let externalURL = newsItem.externalURL
+            {
+                let safariViewController = SFSafariViewController(url: externalURL)
+                safariViewController.preferredControlTintColor = newsItem.tintColor
+                return safariViewController
+            }
+            else if let storeApp = newsItem.storeApp
+            {
+                let appViewController = AppViewController.makeAppViewController(app: storeApp)
+                return appViewController
+            }
+            
+            return nil
+        }
+        else
+        {
+            // Previewing app banner (or nothing).
+            
+            let indexPaths = self.collectionView.indexPathsForVisibleSupplementaryElements(ofKind: UICollectionView.elementKindSectionFooter)
+            
+            guard let indexPath = indexPaths.first(where: { (indexPath) -> Bool in
+                let layoutAttributes = self.collectionView.layoutAttributesForSupplementaryElement(ofKind: UICollectionView.elementKindSectionFooter, at: indexPath)
+                return layoutAttributes?.frame.contains(location) ?? false
+            }) else { return nil }
+            
+            guard let layoutAttributes = self.collectionView.layoutAttributesForSupplementaryElement(ofKind: UICollectionView.elementKindSectionFooter, at: indexPath) else { return nil }
+            previewingContext.sourceRect = layoutAttributes.frame
+            
+            let item = self.dataSource.item(at: indexPath)
+            guard let storeApp = item.storeApp else { return nil }
+            
+            let appViewController = AppViewController.makeAppViewController(app: storeApp)
+            return appViewController
+        }
+    }
+    
+    func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController)
+    {
+        if let safariViewController = viewControllerToCommit as? SFSafariViewController
+        {
+            self.present(safariViewController, animated: true, completion: nil)
+        }
+        else
+        {
+            self.navigationController?.pushViewController(viewControllerToCommit, animated: true)
+        }
+    }
+}

AltStore/Operations/AuthenticationOperation.swift

@@ -0,0 +1,693 @@
+//
+//  AuthenticationOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/5/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import Roxas
+import Network
+
+import AltStoreCore
+import AltSign
+
+enum AuthenticationError: LocalizedError
+{
+    case noTeam
+    case noCertificate
+    
+    case missingPrivateKey
+    case missingCertificate
+    
+    var errorDescription: String? {
+        switch self {
+        case .noTeam: return NSLocalizedString("Developer team could not be found.", comment: "")
+        case .noCertificate: return NSLocalizedString("Developer certificate could not be found.", comment: "")
+        case .missingPrivateKey: return NSLocalizedString("The certificate's private key could not be found.", comment: "")
+        case .missingCertificate: return NSLocalizedString("The certificate could not be found.", comment: "")
+        }
+    }
+}
+
+@objc(AuthenticationOperation)
+class AuthenticationOperation: ResultOperation<(ALTTeam, ALTCertificate, ALTAppleAPISession)>
+{
+    let context: AuthenticatedOperationContext
+    
+    private weak var presentingViewController: UIViewController?
+    
+    private lazy var navigationController: UINavigationController = {
+        let navigationController = self.storyboard.instantiateViewController(withIdentifier: "navigationController") as! UINavigationController
+        if #available(iOS 13.0, *)
+        {
+            navigationController.isModalInPresentation = true
+        }
+        return navigationController
+    }()
+    
+    private lazy var storyboard = UIStoryboard(name: "Authentication", bundle: nil)
+    
+    private var appleIDEmailAddress: String?
+    private var appleIDPassword: String?
+    private var shouldShowInstructions = false
+    
+    private let operationQueue = OperationQueue()
+    
+    private var submitCodeAction: UIAlertAction?
+    
+    init(context: AuthenticatedOperationContext, presentingViewController: UIViewController?)
+    {
+        self.context = context
+        self.presentingViewController = presentingViewController
+        
+        super.init()
+        
+        self.context.authenticationOperation = self
+        self.operationQueue.name = "com.altstore.AuthenticationOperation"
+        self.progress.totalUnitCount = 4
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+                
+        // Sign In
+        self.signIn() { (result) in
+            guard !self.isCancelled else { return self.finish(.failure(OperationError.cancelled)) }
+            
+            switch result
+            {
+            case .failure(let error): self.finish(.failure(error))
+            case .success((let account, let session)):
+                self.context.session = session
+                self.progress.completedUnitCount += 1
+                
+                // Fetch Team
+                self.fetchTeam(for: account, session: session) { (result) in
+                    guard !self.isCancelled else { return self.finish(.failure(OperationError.cancelled)) }
+                    
+                    switch result
+                    {
+                    case .failure(let error): self.finish(.failure(error))
+                    case .success(let team):
+                        self.context.team = team
+                        self.progress.completedUnitCount += 1
+                        
+                        // Fetch Certificate
+                        self.fetchCertificate(for: team, session: session) { (result) in
+                            guard !self.isCancelled else { return self.finish(.failure(OperationError.cancelled)) }
+                            
+                            switch result
+                            {
+                            case .failure(let error): self.finish(.failure(error))
+                            case .success(let certificate):
+                                self.context.certificate = certificate
+                                self.progress.completedUnitCount += 1
+                                       
+                                // Register Device
+                                self.registerCurrentDevice(for: team, session: session) { (result) in
+                                    guard !self.isCancelled else { return self.finish(.failure(OperationError.cancelled)) }
+                                    
+                                    switch result
+                                    {
+                                    case .failure(let error): self.finish(.failure(error))
+                                    case .success:
+                                        self.progress.completedUnitCount += 1
+                                        
+                                        // Save account/team to disk.
+                                        self.save(team) { (result) in
+                                            guard !self.isCancelled else { return self.finish(.failure(OperationError.cancelled)) }
+                                            
+                                            switch result
+                                            {
+                                            case .failure(let error): self.finish(.failure(error))
+                                            case .success:
+                                                // Must cache App IDs _after_ saving account/team to disk.
+                                                self.cacheAppIDs(team: team, session: session) { (result) in
+                                                    let result = result.map { _ in (team, certificate, session) }
+                                                    self.finish(result)
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    
+    func save(_ altTeam: ALTTeam, completionHandler: @escaping (Result<Void, Error>) -> Void)
+    {
+        let context = DatabaseManager.shared.persistentContainer.newBackgroundContext()
+        context.performAndWait {
+            do
+            {
+                let account: Account
+                let team: Team
+                
+                if let tempAccount = Account.first(satisfying: NSPredicate(format: "%K == %@", #keyPath(Account.identifier), altTeam.account.identifier), in: context)
+                {
+                    account = tempAccount
+                }
+                else
+                {
+                    account = Account(altTeam.account, context: context)
+                }
+                
+                if let tempTeam = Team.first(satisfying: NSPredicate(format: "%K == %@", #keyPath(Team.identifier), altTeam.identifier), in: context)
+                {
+                    team = tempTeam
+                }
+                else
+                {
+                    team = Team(altTeam, account: account, context: context)
+                }
+                
+                account.update(account: altTeam.account)
+                
+                if let providedEmailAddress = self.appleIDEmailAddress
+                {
+                    // Save the user's provided email address instead of the one associated with their account (which may be outdated).
+                    account.appleID = providedEmailAddress
+                }
+                
+                team.update(team: altTeam)
+                                
+                try context.save()
+                
+                completionHandler(.success(()))
+            }
+            catch
+            {
+                completionHandler(.failure(error))
+            }
+        }
+    }
+    
+    override func finish(_ result: Result<(ALTTeam, ALTCertificate, ALTAppleAPISession), Error>)
+    {
+        guard !self.isFinished else { return }
+        
+        print("Finished authenticating with result:", result.error?.localizedDescription ?? "success")
+        
+        let context = DatabaseManager.shared.persistentContainer.newBackgroundContext()
+        context.perform {
+            do
+            {
+                let (altTeam, altCertificate, session) = try result.get()
+                
+                guard
+                    let account = Account.first(satisfying: NSPredicate(format: "%K == %@", #keyPath(Account.identifier), altTeam.account.identifier), in: context),
+                    let team = Team.first(satisfying: NSPredicate(format: "%K == %@", #keyPath(Team.identifier), altTeam.identifier), in: context)
+                else { throw AuthenticationError.noTeam }
+                
+                // Account
+                account.isActiveAccount = true
+                
+                let otherAccountsFetchRequest = Account.fetchRequest() as NSFetchRequest<Account>
+                otherAccountsFetchRequest.predicate = NSPredicate(format: "%K != %@", #keyPath(Account.identifier), account.identifier)
+                
+                let otherAccounts = try context.fetch(otherAccountsFetchRequest)
+                for account in otherAccounts
+                {
+                    account.isActiveAccount = false
+                }
+                
+                // Team
+                team.isActiveTeam = true
+                
+                let otherTeamsFetchRequest = Team.fetchRequest() as NSFetchRequest<Team>
+                otherTeamsFetchRequest.predicate = NSPredicate(format: "%K != %@", #keyPath(Team.identifier), team.identifier)
+                
+                let otherTeams = try context.fetch(otherTeamsFetchRequest)
+                for team in otherTeams
+                {
+                    team.isActiveTeam = false
+                }
+                
+                let activeAppsMinimumVersion = OperatingSystemVersion(majorVersion: 13, minorVersion: 3, patchVersion: 1)
+                if team.type == .free, ProcessInfo.processInfo.isOperatingSystemAtLeast(activeAppsMinimumVersion)
+                {
+                    UserDefaults.standard.activeAppsLimit = ALTActiveAppsLimit
+                }
+                else
+                {
+                    UserDefaults.standard.activeAppsLimit = nil
+                }
+                
+                // Save
+                try context.save()
+                
+                // Update keychain
+                Keychain.shared.appleIDEmailAddress = self.appleIDEmailAddress ?? altTeam.account.appleID // Prefer the user's provided email address over the one associated with their account (which may be outdated).
+                Keychain.shared.appleIDPassword = self.appleIDPassword
+                
+                Keychain.shared.signingCertificate = altCertificate.p12Data()
+                Keychain.shared.signingCertificatePassword = altCertificate.machineIdentifier
+                
+                self.showInstructionsIfNecessary() { (didShowInstructions) in
+                    
+                    let signer = ALTSigner(team: altTeam, certificate: altCertificate)
+                    // Refresh screen must go last since a successful refresh will cause the app to quit.
+                    self.showRefreshScreenIfNecessary(signer: signer, session: session) { (didShowRefreshAlert) in
+                        super.finish(result)
+                        
+                        DispatchQueue.main.async {
+                            self.navigationController.dismiss(animated: true, completion: nil)
+                        }
+                    }
+                }
+            }
+            catch
+            {
+                super.finish(result)
+                
+                DispatchQueue.main.async {
+                    self.navigationController.dismiss(animated: true, completion: nil)
+                }
+            }
+        }
+    }
+}
+
+private extension AuthenticationOperation
+{
+    func present(_ viewController: UIViewController) -> Bool
+    {
+        guard let presentingViewController = self.presentingViewController else { return false }
+        
+        self.navigationController.view.tintColor = .white
+        
+        if self.navigationController.viewControllers.isEmpty
+        {
+            guard presentingViewController.presentedViewController == nil else { return false }
+            
+            self.navigationController.setViewControllers([viewController], animated: false)            
+            presentingViewController.present(self.navigationController, animated: true, completion: nil)
+        }
+        else
+        {
+            viewController.navigationItem.leftBarButtonItem = nil
+            self.navigationController.pushViewController(viewController, animated: true)
+        }
+        
+        return true
+    }
+}
+
+private extension AuthenticationOperation
+{
+    func signIn(completionHandler: @escaping (Result<(ALTAccount, ALTAppleAPISession), Swift.Error>) -> Void)
+    {
+        func authenticate()
+        {
+            DispatchQueue.main.async {
+                let authenticationViewController = self.storyboard.instantiateViewController(withIdentifier: "authenticationViewController") as! AuthenticationViewController
+                authenticationViewController.authenticationHandler = { (appleID, password, completionHandler) in
+                    self.authenticate(appleID: appleID, password: password) { (result) in
+                        completionHandler(result)
+                    }
+                }
+                authenticationViewController.completionHandler = { (result) in
+                    if let (account, session, password) = result
+                    {
+                        // We presented the Auth UI and the user signed in.
+                        // In this case, we'll assume we should show the instructions again.
+                        self.shouldShowInstructions = true
+                        
+                        self.appleIDPassword = password
+                        completionHandler(.success((account, session)))
+                    }
+                    else
+                    {
+                        completionHandler(.failure(OperationError.cancelled))
+                    }
+                }
+                
+                if !self.present(authenticationViewController)
+                {
+                    completionHandler(.failure(OperationError.notAuthenticated))
+                }
+            }
+        }
+        
+        if let appleID = Keychain.shared.appleIDEmailAddress, let password = Keychain.shared.appleIDPassword
+        {
+            self.authenticate(appleID: appleID, password: password) { (result) in
+                switch result
+                {
+                case .success((let account, let session)):
+                    self.appleIDPassword = password
+                    completionHandler(.success((account, session)))
+                    
+                case .failure(ALTAppleAPIError.incorrectCredentials), .failure(ALTAppleAPIError.appSpecificPasswordRequired):
+                    authenticate()
+                    
+                case .failure(let error):
+                    completionHandler(.failure(error))
+                }
+            }
+        }
+        else
+        {
+            authenticate()
+        }
+    }
+    
+    func authenticate(appleID: String, password: String, completionHandler: @escaping (Result<(ALTAccount, ALTAppleAPISession), Swift.Error>) -> Void)
+    {
+        self.appleIDEmailAddress = appleID
+        
+        let fetchAnisetteDataOperation = FetchAnisetteDataOperation(context: self.context)
+        fetchAnisetteDataOperation.resultHandler = { (result) in
+            switch result
+            {
+            case .failure(let error): completionHandler(.failure(error))
+            case .success(let anisetteData):
+                let verificationHandler: ((@escaping (String?) -> Void) -> Void)?
+                
+                if let presentingViewController = self.presentingViewController
+                {
+                    verificationHandler = { (completionHandler) in
+                        DispatchQueue.main.async {
+                            let alertController = UIAlertController(title: NSLocalizedString("Please enter the 6-digit verification code that was sent to your Apple devices.", comment: ""), message: nil, preferredStyle: .alert)
+                            alertController.addTextField { (textField) in
+                                textField.autocorrectionType = .no
+                                textField.autocapitalizationType = .none
+                                textField.keyboardType = .numberPad
+                                
+                                NotificationCenter.default.addObserver(self, selector: #selector(AuthenticationOperation.textFieldTextDidChange(_:)), name: UITextField.textDidChangeNotification, object: textField)
+                            }
+                            
+                            let submitAction = UIAlertAction(title: NSLocalizedString("Continue", comment: ""), style: .default) { (action) in
+                                let textField = alertController.textFields?.first
+                                
+                                let code = textField?.text ?? ""
+                                completionHandler(code)
+                            }
+                            submitAction.isEnabled = false
+                            alertController.addAction(submitAction)
+                            self.submitCodeAction = submitAction
+                            
+                            alertController.addAction(UIAlertAction(title: RSTSystemLocalizedString("Cancel"), style: .cancel) { (action) in
+                                completionHandler(nil)
+                            })
+                            
+                            if self.navigationController.presentingViewController != nil
+                            {
+                                self.navigationController.present(alertController, animated: true, completion: nil)
+                            }
+                            else
+                            {
+                                presentingViewController.present(alertController, animated: true, completion: nil)
+                            }
+                        }
+                    }
+                }
+                else
+                {
+                    // No view controller to present security code alert, so don't provide verificationHandler.
+                    verificationHandler = nil
+                }
+                    
+                ALTAppleAPI.shared.authenticate(appleID: appleID, password: password, anisetteData: anisetteData,
+                                                verificationHandler: verificationHandler) { (account, session, error) in
+                    if let account = account, let session = session
+                    {
+                        completionHandler(.success((account, session)))
+                    }
+                    else
+                    {
+                        completionHandler(.failure(error ?? OperationError.unknown))
+                    }
+                }
+            }
+        }
+        
+        self.operationQueue.addOperation(fetchAnisetteDataOperation)
+    }
+    
+    func fetchTeam(for account: ALTAccount, session: ALTAppleAPISession, completionHandler: @escaping (Result<ALTTeam, Swift.Error>) -> Void)
+    {
+        func selectTeam(from teams: [ALTTeam])
+        {
+            if let team = teams.first(where: { $0.type == .individual })
+            {
+                return completionHandler(.success(team))
+            }
+            else if let team = teams.first(where: { $0.type == .free })
+            {
+                return completionHandler(.success(team))
+            }
+            else if let team = teams.first
+            {
+                return completionHandler(.success(team))
+            }
+            else
+            {
+                return completionHandler(.failure(AuthenticationError.noTeam))
+            }
+        }
+
+        ALTAppleAPI.shared.fetchTeams(for: account, session: session) { (teams, error) in
+            switch Result(teams, error)
+            {
+            case .failure(let error): completionHandler(.failure(error))
+            case .success(let teams):
+                DatabaseManager.shared.persistentContainer.performBackgroundTask { (context) in
+                    if let activeTeam = DatabaseManager.shared.activeTeam(in: context), let altTeam = teams.first(where: { $0.identifier == activeTeam.identifier })
+                    {
+                        completionHandler(.success(altTeam))
+                    }
+                    else
+                    {
+                        selectTeam(from: teams)
+                    }
+                }
+            }
+        }
+    }
+    
+    func fetchCertificate(for team: ALTTeam, session: ALTAppleAPISession, completionHandler: @escaping (Result<ALTCertificate, Swift.Error>) -> Void)
+    {
+        func requestCertificate()
+        {
+            let machineName = "AltStore - " + UIDevice.current.name
+            ALTAppleAPI.shared.addCertificate(machineName: machineName, to: team, session: session) { (certificate, error) in
+                do
+                {
+                    let certificate = try Result(certificate, error).get()
+                    guard let privateKey = certificate.privateKey else { throw AuthenticationError.missingPrivateKey }
+                    
+                    ALTAppleAPI.shared.fetchCertificates(for: team, session: session) { (certificates, error) in
+                        do
+                        {
+                            let certificates = try Result(certificates, error).get()
+                            
+                            guard let certificate = certificates.first(where: { $0.serialNumber == certificate.serialNumber }) else {
+                                throw AuthenticationError.missingCertificate
+                            }
+                            
+                            certificate.privateKey = privateKey
+                            completionHandler(.success(certificate))
+                        }
+                        catch
+                        {
+                            completionHandler(.failure(error))
+                        }
+                    }
+                }
+                catch
+                {
+                    completionHandler(.failure(error))
+                }
+            }
+        }
+        
+        func replaceCertificate(from certificates: [ALTCertificate])
+        {
+            guard let certificate = certificates.first(where: { $0.machineName?.starts(with: "AltStore") == true }) ?? certificates.first else { return completionHandler(.failure(AuthenticationError.noCertificate)) }
+            
+            ALTAppleAPI.shared.revoke(certificate, for: team, session: session) { (success, error) in
+                if let error = error, !success
+                {
+                    completionHandler(.failure(error))
+                }
+                else
+                {
+                    requestCertificate()
+                }
+            }
+        }
+        
+        ALTAppleAPI.shared.fetchCertificates(for: team, session: session) { (certificates, error) in
+            do
+            {
+                let certificates = try Result(certificates, error).get()
+                
+                if
+                    let data = Keychain.shared.signingCertificate,
+                    let localCertificate = ALTCertificate(p12Data: data, password: nil),
+                    let certificate = certificates.first(where: { $0.serialNumber == localCertificate.serialNumber })
+                {
+                    // We have a certificate stored in the keychain and it hasn't been revoked.
+                    localCertificate.machineIdentifier = certificate.machineIdentifier
+                    completionHandler(.success(localCertificate))
+                }
+                else if
+                    let serialNumber = Keychain.shared.signingCertificateSerialNumber,
+                    let privateKey = Keychain.shared.signingCertificatePrivateKey,
+                    let certificate = certificates.first(where: { $0.serialNumber == serialNumber })
+                {
+                    // LEGACY
+                    // We have the private key for one of the certificates, so add it to certificate and use it.
+                    certificate.privateKey = privateKey
+                    completionHandler(.success(certificate))
+                }
+                else if
+                    let serialNumber = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.certificateID) as? String,
+                    let certificate = certificates.first(where: { $0.serialNumber == serialNumber }),
+                    let machineIdentifier = certificate.machineIdentifier,
+                    FileManager.default.fileExists(atPath: Bundle.main.certificateURL.path),
+                    let data = try? Data(contentsOf: Bundle.main.certificateURL),
+                    let localCertificate = ALTCertificate(p12Data: data, password: machineIdentifier)
+                {
+                    // We have an embedded certificate that hasn't been revoked.
+                    localCertificate.machineIdentifier = machineIdentifier
+                    completionHandler(.success(localCertificate))
+                }
+                else if certificates.isEmpty
+                {
+                    // No certificates, so request a new one.
+                    requestCertificate()
+                }
+                else
+                {
+                    // We don't have private keys for any of the certificates,
+                    // so we need to revoke one and create a new one.
+                    replaceCertificate(from: certificates)
+                }
+            }
+            catch
+            {
+                completionHandler(.failure(error))
+            }
+        }
+    }
+    
+    func registerCurrentDevice(for team: ALTTeam, session: ALTAppleAPISession, completionHandler: @escaping (Result<ALTDevice, Error>) -> Void)
+    {
+        guard let udid = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.deviceID) as? String else {
+            return completionHandler(.failure(OperationError.unknownUDID))
+        }
+        
+        ALTAppleAPI.shared.fetchDevices(for: team, types: [.iphone, .ipad], session: session) { (devices, error) in
+            do
+            {
+                let devices = try Result(devices, error).get()
+                
+                if let device = devices.first(where: { $0.identifier == udid })
+                {
+                    completionHandler(.success(device))
+                }
+                else
+                {
+                    ALTAppleAPI.shared.registerDevice(name: UIDevice.current.name, identifier: udid, type: .iphone, team: team, session: session) { (device, error) in
+                        completionHandler(Result(device, error))
+                    }
+                }
+            }
+            catch
+            {
+                completionHandler(.failure(error))
+            }
+        }
+    }
+    
+    func cacheAppIDs(team: ALTTeam, session: ALTAppleAPISession, completionHandler: @escaping (Result<Void, Error>) -> Void)
+    {
+        let fetchAppIDsOperation = FetchAppIDsOperation(context: self.context)
+        fetchAppIDsOperation.resultHandler = { (result) in
+            do
+            {
+                let (_, context) = try result.get()
+                try context.save()
+                
+                completionHandler(.success(()))
+            }
+            catch
+            {
+                completionHandler(.failure(error))
+            }
+        }
+        
+        self.operationQueue.addOperation(fetchAppIDsOperation)
+    }
+    
+    func showInstructionsIfNecessary(completionHandler: @escaping (Bool) -> Void)
+    {
+        guard self.shouldShowInstructions else { return completionHandler(false) }
+        
+        DispatchQueue.main.async {
+            let instructionsViewController = self.storyboard.instantiateViewController(withIdentifier: "instructionsViewController") as! InstructionsViewController
+            instructionsViewController.showsBottomButton = true
+            instructionsViewController.completionHandler = {
+                completionHandler(true)
+            }
+            
+            if !self.present(instructionsViewController)
+            {
+                completionHandler(false)
+            }
+        }
+    }
+    
+    func showRefreshScreenIfNecessary(signer: ALTSigner, session: ALTAppleAPISession, completionHandler: @escaping (Bool) -> Void)
+    {
+        guard let application = ALTApplication(fileURL: Bundle.main.bundleURL), let provisioningProfile = application.provisioningProfile else { return completionHandler(false) }
+        
+        // If we're not using the same certificate used to install AltStore, warn user that they need to refresh.
+        guard !provisioningProfile.certificates.contains(signer.certificate) else { return completionHandler(false) }
+        
+#if DEBUG
+        completionHandler(false)
+#else
+        DispatchQueue.main.async {
+            let context = AuthenticatedOperationContext(context: self.context)
+            context.operations.removeAllObjects() // Prevent deadlock due to endless waiting on previous operations to finish.
+            
+            let refreshViewController = self.storyboard.instantiateViewController(withIdentifier: "refreshAltStoreViewController") as! RefreshAltStoreViewController
+            refreshViewController.context = context
+            refreshViewController.completionHandler = { _ in
+                completionHandler(true)
+            }
+            
+            if !self.present(refreshViewController)
+            {
+                completionHandler(false)
+            }
+        }
+#endif
+    }
+}
+
+extension AuthenticationOperation
+{
+    @objc func textFieldTextDidChange(_ notification: Notification)
+    {
+        guard let textField = notification.object as? UITextField else { return }
+        
+        self.submitCodeAction?.isEnabled = (textField.text ?? "").count == 6
+    }
+}

AltStore/Operations/BackgroundRefreshAppsOperation.swift

@@ -0,0 +1,271 @@
+//
+//  BackgroundRefreshAppsOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/6/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import UIKit
+import CoreData
+
+import AltStoreCore
+
+enum RefreshError: LocalizedError
+{
+    case noInstalledApps
+    
+    var errorDescription: String? {
+        switch self
+        {
+        case .noInstalledApps: return NSLocalizedString("No active apps require refreshing.", comment: "")
+        }
+    }
+}
+
+private extension CFNotificationName
+{
+    static let requestAppState = CFNotificationName("com.altstore.RequestAppState" as CFString)
+    static let appIsRunning = CFNotificationName("com.altstore.AppState.Running" as CFString)
+    
+    static func requestAppState(for appID: String) -> CFNotificationName
+    {
+        let name = String(CFNotificationName.requestAppState.rawValue) + "." + appID
+        return CFNotificationName(name as CFString)
+    }
+    
+    static func appIsRunning(for appID: String) -> CFNotificationName
+    {
+        let name = String(CFNotificationName.appIsRunning.rawValue) + "." + appID
+        return CFNotificationName(name as CFString)
+    }
+}
+
+private let ReceivedApplicationState: @convention(c) (CFNotificationCenter?, UnsafeMutableRawPointer?, CFNotificationName?, UnsafeRawPointer?, CFDictionary?) -> Void =
+{ (center, observer, name, object, userInfo) in
+    guard let name = name, let observer = observer else { return }
+    
+    let operation = unsafeBitCast(observer, to: BackgroundRefreshAppsOperation.self)
+    operation.receivedApplicationState(notification: name)
+}
+
+@objc(BackgroundRefreshAppsOperation)
+class BackgroundRefreshAppsOperation: ResultOperation<[String: Result<InstalledApp, Error>]>
+{
+    let installedApps: [InstalledApp]
+    private let managedObjectContext: NSManagedObjectContext
+    
+    var presentsFinishedNotification: Bool = true
+    
+    private let refreshIdentifier: String = UUID().uuidString
+    private var runningApplications: Set<String> = []
+    
+    init(installedApps: [InstalledApp])
+    {
+        self.installedApps = installedApps
+        self.managedObjectContext = installedApps.compactMap({ $0.managedObjectContext }).first ?? DatabaseManager.shared.persistentContainer.newBackgroundContext()
+        
+        super.init()
+    }
+    
+    override func finish(_ result: Result<[String: Result<InstalledApp, Error>], Error>)
+    {
+        super.finish(result)
+        
+        self.scheduleFinishedRefreshingNotification(for: result, delay: 0)
+        
+        self.managedObjectContext.perform {
+            self.stopListeningForRunningApps()
+        }
+        
+        DispatchQueue.main.async {
+            if UIApplication.shared.applicationState == .background
+            {
+                ServerManager.shared.stopDiscovering()
+            }
+        }        
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        guard !self.installedApps.isEmpty else {
+            self.finish(.failure(RefreshError.noInstalledApps))
+            return
+        }
+        
+        if !ServerManager.shared.isDiscovering
+        {
+            ServerManager.shared.startDiscovering()
+        }
+        
+        self.managedObjectContext.perform {
+            print("Apps to refresh:", self.installedApps.map(\.bundleIdentifier))
+            
+            self.startListeningForRunningApps()
+            
+            // Wait for 3 seconds (2 now, 1 later in FindServerOperation) to:
+            // a) give us time to discover AltServers
+            // b) give other processes a chance to respond to requestAppState notification
+            DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
+                self.managedObjectContext.perform {
+                    
+                    let filteredApps = self.installedApps.filter { !self.runningApplications.contains($0.bundleIdentifier) }
+                    print("Filtered Apps to Refresh:", filteredApps.map { $0.bundleIdentifier })
+                    
+                    let group = AppManager.shared.refresh(filteredApps, presentingViewController: nil)
+                    group.beginInstallationHandler = { (installedApp) in
+                        guard installedApp.bundleIdentifier == StoreApp.altstoreAppID else { return }
+                        
+                        // We're starting to install AltStore, which means the app is about to quit.
+                        // So, we schedule a "refresh successful" local notification to be displayed after a delay,
+                        // but if the app is still running, we cancel the notification.
+                        // Then, we schedule another notification and repeat the process.
+                        
+                        // Also since AltServer has already received the app, it can finish installing even if we're no longer running in background.
+                        
+                        if let error = group.context.error
+                        {
+                            self.scheduleFinishedRefreshingNotification(for: .failure(error))
+                        }
+                        else
+                        {
+                            var results = group.results
+                            results[installedApp.bundleIdentifier] = .success(installedApp)
+                            
+                            self.scheduleFinishedRefreshingNotification(for: .success(results))
+                        }
+                    }
+                    group.completionHandler = { (results) in
+                        self.finish(.success(results))
+                    }
+                }
+            }
+        }
+    }
+}
+
+private extension BackgroundRefreshAppsOperation
+{
+    func startListeningForRunningApps()
+    {
+        let notificationCenter = CFNotificationCenterGetDarwinNotifyCenter()
+        let observer = Unmanaged.passUnretained(self).toOpaque()
+        
+        for installedApp in self.installedApps
+        {
+            let appIsRunningNotification = CFNotificationName.appIsRunning(for: installedApp.bundleIdentifier)
+            CFNotificationCenterAddObserver(notificationCenter, observer, ReceivedApplicationState, appIsRunningNotification.rawValue, nil, .deliverImmediately)
+            
+            let requestAppStateNotification = CFNotificationName.requestAppState(for: installedApp.bundleIdentifier)
+            CFNotificationCenterPostNotification(notificationCenter, requestAppStateNotification, nil, nil, true)
+        }
+    }
+    
+    func stopListeningForRunningApps()
+    {
+        let notificationCenter = CFNotificationCenterGetDarwinNotifyCenter()
+        let observer = Unmanaged.passUnretained(self).toOpaque()
+        
+        for installedApp in self.installedApps
+        {
+            let appIsRunningNotification = CFNotificationName.appIsRunning(for: installedApp.bundleIdentifier)
+            CFNotificationCenterRemoveObserver(notificationCenter, observer, appIsRunningNotification, nil)
+        }
+    }
+    
+    func receivedApplicationState(notification: CFNotificationName)
+    {
+        let baseName = String(CFNotificationName.appIsRunning.rawValue)
+        
+        let appID = String(notification.rawValue).replacingOccurrences(of: baseName + ".", with: "")
+        self.runningApplications.insert(appID)
+    }
+    
+    func scheduleFinishedRefreshingNotification(for result: Result<[String: Result<InstalledApp, Error>], Error>, delay: TimeInterval = 5)
+    {
+        func scheduleFinishedRefreshingNotification()
+        {
+            self.cancelFinishedRefreshingNotification()
+            
+            let content = UNMutableNotificationContent()
+            
+            var shouldPresentAlert = true
+            
+            do
+            {
+                let results = try result.get()
+                shouldPresentAlert = !results.isEmpty
+                
+                for (_, result) in results
+                {
+                    guard case let .failure(error) = result else { continue }
+                    throw error
+                }
+                
+                content.title = NSLocalizedString("Refreshed Apps", comment: "")
+                content.body = NSLocalizedString("All apps have been refreshed.", comment: "")
+            }
+            catch ConnectionError.serverNotFound
+            {
+                shouldPresentAlert = false
+            }
+            catch RefreshError.noInstalledApps
+            {
+                shouldPresentAlert = false
+            }
+            catch
+            {
+                print("Failed to refresh apps in background.", error)
+                
+                content.title = NSLocalizedString("Failed to Refresh Apps", comment: "")
+                content.body = error.localizedDescription
+                
+                shouldPresentAlert = true
+            }
+            
+            if shouldPresentAlert
+            {
+                let trigger = UNTimeIntervalNotificationTrigger(timeInterval: delay + 1, repeats: false)
+                
+                let request = UNNotificationRequest(identifier: self.refreshIdentifier, content: content, trigger: trigger)
+                UNUserNotificationCenter.current().add(request)
+                
+                if delay > 0
+                {
+                    DispatchQueue.global().asyncAfter(deadline: .now() + delay) {
+                        UNUserNotificationCenter.current().getPendingNotificationRequests() { (requests) in
+                            // If app is still running at this point, we schedule another notification with same identifier.
+                            // This prevents the currently scheduled notification from displaying, and starts another countdown timer.
+                            // First though, make sure there _is_ still a pending request, otherwise it's been cancelled
+                            // and we should stop polling.
+                            guard requests.contains(where: { $0.identifier == self.refreshIdentifier }) else { return }
+                            
+                            scheduleFinishedRefreshingNotification()
+                        }
+                    }
+                }
+            }
+        }
+        
+        if self.presentsFinishedNotification
+        {
+            scheduleFinishedRefreshingNotification()
+        }        
+        
+        // Perform synchronously to ensure app doesn't quit before we've finishing saving to disk.
+        let context = DatabaseManager.shared.persistentContainer.newBackgroundContext()
+        context.performAndWait {
+            _ = RefreshAttempt(identifier: self.refreshIdentifier, result: result, context: context)
+            
+            do { try context.save() }
+            catch { print("Failed to save refresh attempt.", error) }
+        }
+    }
+    
+    func cancelFinishedRefreshingNotification()
+    {
+        UNUserNotificationCenter.current().removePendingNotificationRequests(withIdentifiers: [self.refreshIdentifier])
+    }
+}

AltStore/Operations/BackupAppOperation.swift

@@ -0,0 +1,183 @@
+//
+//  BackupAppOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 5/12/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltStoreCore
+import AltSign
+
+extension BackupAppOperation
+{
+    enum Action: String
+    {
+        case backup
+        case restore
+    }
+}
+
+@objc(BackupAppOperation)
+class BackupAppOperation: ResultOperation<Void>
+{
+    let action: Action
+    let context: InstallAppOperationContext
+    
+    private var appName: String?
+    private var timeoutTimer: Timer?
+    
+    init(action: Action, context: InstallAppOperationContext)
+    {
+        self.action = action
+        self.context = context
+        
+        super.init()
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        do
+        {
+            if let error = self.context.error
+            {
+                throw error
+            }
+            
+            guard let installedApp = self.context.installedApp, let context = installedApp.managedObjectContext else { throw OperationError.invalidParameters }
+            context.perform {
+                do
+                {
+                    let appName = installedApp.name
+                    self.appName = appName
+                    
+                    guard let altstoreApp = InstalledApp.fetchAltStore(in: context) else { throw OperationError.appNotFound }
+                    let altstoreOpenURL = altstoreApp.openAppURL
+                    
+                    var returnURLComponents = URLComponents(url: altstoreOpenURL, resolvingAgainstBaseURL: false)
+                    returnURLComponents?.host = "appBackupResponse"
+                    guard let returnURL = returnURLComponents?.url else { throw OperationError.openAppFailed(name: appName) }
+                    
+                    var openURLComponents = URLComponents()
+                    openURLComponents.scheme = installedApp.openAppURL.scheme
+                    openURLComponents.host = self.action.rawValue
+                    openURLComponents.queryItems = [URLQueryItem(name: "returnURL", value: returnURL.absoluteString)]
+                    
+                    guard let openURL = openURLComponents.url else { throw OperationError.openAppFailed(name: appName) }
+                    
+                    DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
+                        let currentTime = CFAbsoluteTimeGetCurrent()
+                        
+                        UIApplication.shared.open(openURL, options: [:]) { (success) in
+                            let elapsedTime = CFAbsoluteTimeGetCurrent() - currentTime
+                            
+                            if success
+                            {
+                                self.registerObservers()
+                            }
+                            else if elapsedTime < 0.5
+                            {
+                                // Failed too quickly for human to respond to alert, possibly still finalizing installation.
+                                // Try again in a couple seconds.
+                                
+                                print("Failed too quickly, retrying after a few seconds...")
+                                
+                                DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
+                                    UIApplication.shared.open(openURL, options: [:]) { (success) in
+                                        if success
+                                        {
+                                            self.registerObservers()
+                                        }
+                                        else
+                                        {
+                                            self.finish(.failure(OperationError.openAppFailed(name: appName)))
+                                        }
+                                    }
+                                }
+                            }
+                            else
+                            {
+                                self.finish(.failure(OperationError.openAppFailed(name: appName)))
+                            }
+                        }
+                    }
+                }
+                catch
+                {
+                    self.finish(.failure(error))
+                }
+            }
+        }
+        catch
+        {
+            self.finish(.failure(error))
+        }
+    }
+    
+    override func finish(_ result: Result<Void, Error>)
+    {
+        let result = result.mapError { (error) -> Error in
+            let appName = self.appName ?? self.context.bundleIdentifier
+            
+            switch (error, self.action)
+            {
+            case (let error as NSError, _) where (self.context.error as NSError?) == error: fallthrough
+            case (OperationError.cancelled, _):
+                return error
+                
+            case (let error as NSError, .backup):
+                let localizedFailure = String(format: NSLocalizedString("Could not back up “%@”.", comment: ""), appName)
+                return error.withLocalizedFailure(localizedFailure)
+                
+            case (let error as NSError, .restore):
+                let localizedFailure = String(format: NSLocalizedString("Could not restore “%@”.", comment: ""), appName)
+                return error.withLocalizedFailure(localizedFailure)
+            }
+        }
+        
+        switch result
+        {
+        case .success: self.progress.completedUnitCount += 1
+        case .failure: break
+        }
+        
+        super.finish(result)
+    }
+}
+
+private extension BackupAppOperation
+{
+    func registerObservers()
+    {
+        var applicationWillReturnObserver: NSObjectProtocol!
+        applicationWillReturnObserver = NotificationCenter.default.addObserver(forName: UIApplication.willEnterForegroundNotification, object: nil, queue: .main) { [weak self] (notification) in
+            guard let self = self, !self.isFinished else { return }
+            
+            self.timeoutTimer = Timer.scheduledTimer(withTimeInterval: 5, repeats: false) { [weak self] (timer) in
+                // Final delay to ensure we don't prematurely return failure
+                // in case timer expired while we were in background, but
+                // are now returning to app with success response.
+                DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
+                    guard let self = self, !self.isFinished else { return }
+                    self.finish(.failure(OperationError.timedOut))
+                }
+            }
+            
+            NotificationCenter.default.removeObserver(applicationWillReturnObserver!)
+        }
+        
+        var backupResponseObserver: NSObjectProtocol!
+        backupResponseObserver = NotificationCenter.default.addObserver(forName: AppDelegate.appBackupDidFinish, object: nil, queue: nil) { [weak self] (notification) in
+            self?.timeoutTimer?.invalidate()
+            
+            let result = notification.userInfo?[AppDelegate.appBackupResultKey] as? Result<Void, Error> ?? .failure(OperationError.unknownResult)
+            self?.finish(result)
+            
+            NotificationCenter.default.removeObserver(backupResponseObserver!)
+        }
+    }
+}

AltStore/Operations/DeactivateAppOperation.swift

@@ -0,0 +1,89 @@
+//
+//  DeactivateAppOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 3/4/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltStoreCore
+import AltSign
+import Roxas
+
+@objc(DeactivateAppOperation)
+class DeactivateAppOperation: ResultOperation<InstalledApp>
+{
+    let app: InstalledApp
+    let context: OperationContext
+    
+    init(app: InstalledApp, context: OperationContext)
+    {
+        self.app = app
+        self.context = context
+        
+        super.init()
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard let server = self.context.server else { return self.finish(.failure(OperationError.invalidParameters)) }
+        guard let udid = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.deviceID) as? String else { return self.finish(.failure(OperationError.unknownUDID)) }
+        
+        ServerManager.shared.connect(to: server) { (result) in
+            switch result
+            {
+            case .failure(let error): self.finish(.failure(error))
+            case .success(let connection):
+                print("Sending deactivate app request...")
+                
+                DatabaseManager.shared.persistentContainer.performBackgroundTask { (context) in
+                    let installedApp = context.object(with: self.app.objectID) as! InstalledApp
+                    
+                    let appExtensionProfiles = installedApp.appExtensions.map { $0.resignedBundleIdentifier }
+                    let allIdentifiers = [installedApp.resignedBundleIdentifier] + appExtensionProfiles
+                    
+                    let request = RemoveProvisioningProfilesRequest(udid: udid, bundleIdentifiers: Set(allIdentifiers))
+                    connection.send(request) { (result) in
+                        print("Sent deactive app request!")
+                        
+                        switch result
+                        {
+                        case .failure(let error): self.finish(.failure(error))
+                        case .success:
+                            print("Waiting for deactivate app response...")
+                            connection.receiveResponse() { (result) in
+                                print("Receiving deactivate app response:", result)
+                                
+                                switch result
+                                {
+                                case .failure(let error): self.finish(.failure(error))
+                                case .success(.error(let response)): self.finish(.failure(response.error))
+                                case .success(.removeProvisioningProfiles):
+                                    DatabaseManager.shared.persistentContainer.performBackgroundTask { (context) in
+                                        self.progress.completedUnitCount += 1
+                                        
+                                        let installedApp = context.object(with: self.app.objectID) as! InstalledApp
+                                        installedApp.isActive = false
+                                        self.finish(.success(installedApp))
+                                    }
+                                    
+                                case .success: self.finish(.failure(ALTServerError(.unknownResponse)))
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

AltStore/Operations/DownloadAppOperation.swift

@@ -0,0 +1,325 @@
+//
+//  DownloadAppOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/10/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import Roxas
+
+import AltStoreCore
+import AltSign
+
+private extension DownloadAppOperation
+{
+    struct DependencyError: ALTLocalizedError
+    {
+        let dependency: Dependency
+        let error: Error
+        
+        var failure: String? {
+            return String(format: NSLocalizedString("Could not download “%@”.", comment: ""), self.dependency.preferredFilename)
+        }
+        
+        var underlyingError: Error? {
+            return self.error
+        }
+    }
+}
+
+@objc(DownloadAppOperation)
+class DownloadAppOperation: ResultOperation<ALTApplication>
+{
+    let app: AppProtocol
+    let context: AppOperationContext
+    
+    private let bundleIdentifier: String
+    private let sourceURL: URL
+    private let destinationURL: URL
+    
+    private let session = URLSession(configuration: .default)
+    private let temporaryDirectory = FileManager.default.uniqueTemporaryURL()
+    
+    init(app: AppProtocol, destinationURL: URL, context: AppOperationContext)
+    {
+        self.app = app
+        self.context = context
+        
+        self.bundleIdentifier = app.bundleIdentifier
+        self.sourceURL = app.url
+        self.destinationURL = destinationURL
+        
+        super.init()
+        
+        // App = 3, Dependencies = 1
+        self.progress.totalUnitCount = 4
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        print("Downloading App:", self.bundleIdentifier)
+        
+        self.downloadApp(from: self.sourceURL) { result in
+            do
+            {
+                let application = try result.get()
+               
+                if self.context.bundleIdentifier == StoreApp.dolphinAppID, self.context.bundleIdentifier != application.bundleIdentifier
+                {
+                    if var infoPlist = NSDictionary(contentsOf: application.bundle.infoPlistURL) as? [String: Any]
+                    {
+                        // Manually update the app's bundle identifier to match the one specified in the source.
+                        // This allows people who previously installed the app to still update and refresh normally.
+                        infoPlist[kCFBundleIdentifierKey as String] = StoreApp.dolphinAppID
+                        (infoPlist as NSDictionary).write(to: application.bundle.infoPlistURL, atomically: true)
+                    }
+                }
+                
+                self.downloadDependencies(for: application) { result in
+                    do
+                    {
+                        _ = try result.get()
+                        
+                        try FileManager.default.copyItem(at: application.fileURL, to: self.destinationURL, shouldReplace: true)
+                                                
+                        guard let copiedApplication = ALTApplication(fileURL: self.destinationURL) else { throw OperationError.invalidApp }
+                        self.finish(.success(copiedApplication))
+                        
+                        self.progress.completedUnitCount += 1
+                    }
+                    catch
+                    {
+                        self.finish(.failure(error))
+                    }
+                }
+            }
+            catch
+            {
+                self.finish(.failure(error))
+            }
+        }
+    }
+    
+    override func finish(_ result: Result<ALTApplication, Error>)
+    {
+        do
+        {
+            try FileManager.default.removeItem(at: self.temporaryDirectory)
+        }
+        catch
+        {
+            print("Failed to remove DownloadAppOperation temporary directory: \(self.temporaryDirectory).", error)
+        }
+        
+        super.finish(result)
+    }
+}
+
+private extension DownloadAppOperation
+{
+    func downloadApp(from sourceURL: URL, completionHandler: @escaping (Result<ALTApplication, Error>) -> Void)
+    {
+        func finishOperation(_ result: Result<URL, Error>)
+        {
+            do
+            {
+                let fileURL = try result.get()
+                
+                var isDirectory: ObjCBool = false
+                guard FileManager.default.fileExists(atPath: fileURL.path, isDirectory: &isDirectory) else { throw OperationError.appNotFound }
+                
+                try FileManager.default.createDirectory(at: self.temporaryDirectory, withIntermediateDirectories: true, attributes: nil)
+                
+                let appBundleURL: URL
+                
+                if isDirectory.boolValue
+                {
+                    // Directory, so assuming this is .app bundle.
+                    guard Bundle(url: fileURL) != nil else { throw OperationError.invalidApp }
+                    
+                    appBundleURL = self.temporaryDirectory.appendingPathComponent(fileURL.lastPathComponent)
+                    try FileManager.default.copyItem(at: fileURL, to: appBundleURL)
+                }
+                else
+                {
+                    // File, so assuming this is a .ipa file.
+                    appBundleURL = try FileManager.default.unzipAppBundle(at: fileURL, toDirectory: self.temporaryDirectory)
+                }
+                
+                guard let application = ALTApplication(fileURL: appBundleURL) else { throw OperationError.invalidApp }
+                completionHandler(.success(application))
+            }
+            catch
+            {
+                completionHandler(.failure(error))
+            }
+        }
+        
+        if self.sourceURL.isFileURL
+        {
+            finishOperation(.success(sourceURL))
+            
+            self.progress.completedUnitCount += 3
+        }
+        else
+        {
+            let downloadTask = self.session.downloadTask(with: sourceURL) { (fileURL, response, error) in
+                do
+                {
+                    let (fileURL, _) = try Result((fileURL, response), error).get()
+                    finishOperation(.success(fileURL))
+                    
+                    try? FileManager.default.removeItem(at: fileURL)
+                }
+                catch
+                {
+                    finishOperation(.failure(error))
+                }
+            }
+            self.progress.addChild(downloadTask.progress, withPendingUnitCount: 3)
+            
+            downloadTask.resume()
+        }
+    }
+}
+
+private extension DownloadAppOperation
+{
+    struct AltStorePlist: Decodable
+    {
+        private enum CodingKeys: String, CodingKey
+        {
+            case dependencies = "ALTDependencies"
+        }
+
+        var dependencies: [Dependency]
+    }
+
+    struct Dependency: Decodable
+    {
+        var downloadURL: URL
+        var path: String?
+        
+        var preferredFilename: String {
+            let preferredFilename = self.path.map { ($0 as NSString).lastPathComponent } ?? self.downloadURL.lastPathComponent
+            return preferredFilename
+        }
+        
+        init(from decoder: Decoder) throws
+        {
+            enum CodingKeys: String, CodingKey
+            {
+                case downloadURL
+                case path
+            }
+            
+            let container = try decoder.container(keyedBy: CodingKeys.self)
+            
+            let urlString = try container.decode(String.self, forKey: .downloadURL)
+            let path = try container.decodeIfPresent(String.self, forKey: .path)
+            
+            guard let downloadURL = URL(string: urlString) else {
+                throw DecodingError.dataCorruptedError(forKey: .downloadURL, in: container, debugDescription: "downloadURL is not a valid URL.")
+            }
+            
+            self.downloadURL = downloadURL
+            self.path = path
+        }
+    }
+    
+    func downloadDependencies(for application: ALTApplication, completionHandler: @escaping (Result<Set<URL>, Error>) -> Void)
+    {
+        guard FileManager.default.fileExists(atPath: application.bundle.altstorePlistURL.path) else {
+            return completionHandler(.success([]))
+        }
+        
+        do
+        {
+            let data = try Data(contentsOf: application.bundle.altstorePlistURL)
+            
+            let altstorePlist = try PropertyListDecoder().decode(AltStorePlist.self, from: data)
+                        
+            var dependencyURLs = Set<URL>()
+            var dependencyError: DependencyError?
+            
+            let dispatchGroup = DispatchGroup()
+            let progress = Progress(totalUnitCount: Int64(altstorePlist.dependencies.count), parent: self.progress, pendingUnitCount: 1)
+            
+            for dependency in altstorePlist.dependencies
+            {
+                dispatchGroup.enter()
+                
+                self.download(dependency, for: application, progress: progress) { result in
+                    switch result
+                    {
+                    case .failure(let error): dependencyError = error
+                    case .success(let fileURL): dependencyURLs.insert(fileURL)
+                    }
+                    
+                    dispatchGroup.leave()
+                }
+            }
+            
+            dispatchGroup.notify(qos: .userInitiated, queue: .global()) {
+                if let dependencyError = dependencyError
+                {
+                    completionHandler(.failure(dependencyError))
+                }
+                else
+                {
+                    completionHandler(.success(dependencyURLs))
+                }
+            }
+        }
+        catch let error as DecodingError
+        {
+            let nsError = (error as NSError).withLocalizedFailure(String(format: NSLocalizedString("Could not download dependencies for %@.", comment: ""), application.name))
+            completionHandler(.failure(nsError))
+        }
+        catch
+        {
+            completionHandler(.failure(error))
+        }
+    }
+    
+    func download(_ dependency: Dependency, for application: ALTApplication, progress: Progress, completionHandler: @escaping (Result<URL, DependencyError>) -> Void)
+    {
+        let downloadTask = self.session.downloadTask(with: dependency.downloadURL) { (fileURL, response, error) in
+            do
+            {
+                let (fileURL, _) = try Result((fileURL, response), error).get()
+                defer { try? FileManager.default.removeItem(at: fileURL) }
+                
+                let path = dependency.path ?? dependency.preferredFilename
+                let destinationURL = application.fileURL.appendingPathComponent(path)
+                
+                let directoryURL = destinationURL.deletingLastPathComponent()
+                if !FileManager.default.fileExists(atPath: directoryURL.path)
+                {
+                    try FileManager.default.createDirectory(at: directoryURL, withIntermediateDirectories: true)
+                }
+                
+                try FileManager.default.copyItem(at: fileURL, to: destinationURL, shouldReplace: true)
+                
+                completionHandler(.success(destinationURL))
+            }
+            catch
+            {
+                completionHandler(.failure(DependencyError(dependency: dependency, error: error)))
+            }
+        }
+        progress.addChild(downloadTask.progress, withPendingUnitCount: 1)
+        
+        downloadTask.resume()
+    }
+}

AltStore/Operations/EnableJITOperation.swift

@@ -0,0 +1,136 @@
+//
+//  EnableJITOperation.swift
+//  EnableJITOperation
+//
+//  Created by Riley Testut on 9/1/21.
+//  Copyright © 2021 Riley Testut. All rights reserved.
+//
+
+import UIKit
+import Combine
+
+import AltStoreCore
+
+@available(iOS 14, *)
+protocol EnableJITContext
+{
+    var server: Server? { get }
+    var installedApp: InstalledApp? { get }
+    
+    var error: Error? { get }
+}
+
+@available(iOS 14, *)
+class EnableJITOperation<Context: EnableJITContext>: ResultOperation<Void>
+{
+    let context: Context
+    
+    private var cancellable: AnyCancellable?
+    
+    init(context: Context)
+    {
+        self.context = context
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard let server = self.context.server, let installedApp = self.context.installedApp else { return self.finish(.failure(OperationError.invalidParameters)) }
+        guard let udid = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.deviceID) as? String else { return self.finish(.failure(OperationError.unknownUDID)) }
+        
+        installedApp.managedObjectContext?.perform {
+            guard let bundle = Bundle(url: installedApp.fileURL),
+                  let processName = bundle.executableURL?.lastPathComponent
+            else { return self.finish(.failure(OperationError.invalidApp)) }
+            
+            let appName = installedApp.name
+            let openAppURL = installedApp.openAppURL
+            
+            ServerManager.shared.connect(to: server) { result in
+                switch result
+                {
+                case .failure(let error): self.finish(.failure(error))
+                case .success(let connection):
+                    print("Sending enable JIT request...")
+                    
+                    DispatchQueue.main.async {
+                        
+                        // Launch app to make sure it is running in foreground.
+                        UIApplication.shared.open(openAppURL) { success in
+                            guard success else { return self.finish(.failure(OperationError.openAppFailed(name: appName))) }
+                            
+                            // Combine immediately finishes if an error is thrown, but we want to wait at least until app enters background.
+                            // As a workaround, we set error type to Never and use Result<Void, Error> as the value type instead.
+                            let result = Future<Result<Void, Error>, Never> { promise in
+                                let request = EnableUnsignedCodeExecutionRequest(udid: udid, processName: processName)
+                                connection.send(request) { result in
+                                    print("Sent enable JIT request!")
+                                    
+                                    switch result
+                                    {
+                                    case .failure(let error): promise(.success(.failure(error)))
+                                    case .success:
+                                        print("Waiting for enable JIT response...")
+                                        connection.receiveResponse() { result in
+                                            print("Received enable JIT response:", result)
+                                            
+                                            switch result
+                                            {
+                                            case .failure(let error): promise(.success(.failure(error)))
+                                            case .success(.error(let response)): promise(.success(.failure(response.error)))
+                                            case .success(.enableUnsignedCodeExecution): promise(.success(.success(())))
+                                            case .success: promise(.success(.failure(ALTServerError(.unknownResponse))))
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                            
+                            //TODO: Handle case where app does not enter background (e.g. iPad multitasking).
+                            self.cancellable = result
+                                .combineLatest(NotificationCenter.default.publisher(for: UIApplication.didEnterBackgroundNotification, object: nil))
+                                .first()
+                                .receive(on: DispatchQueue.main)
+                                .sink { (result, _) in
+                                    let content = UNMutableNotificationContent()
+                                    
+                                    switch result
+                                    {
+                                    case .failure(let error):
+                                        content.title = String(format: NSLocalizedString("Could not enable JIT for %@", comment: ""), appName)
+                                        content.body = error.localizedDescription
+
+                                        UIDevice.current.vibrate(pattern: .error)
+                                        
+                                    case .success:
+                                        content.title = String(format: NSLocalizedString("Enabled JIT for %@", comment: ""), appName)
+                                        content.body = String(format: NSLocalizedString("JIT will remain enabled until you quit the app.", comment: ""))
+                                        
+                                        UIDevice.current.vibrate(pattern: .success)
+                                    }
+                                    
+                                    if UIApplication.shared.applicationState == .background
+                                    {
+                                        // For some reason, notification won't show up reliably unless we provide a trigger (as of iOS 15).
+                                        let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 0.1, repeats: false)
+                                        
+                                        let request = UNNotificationRequest(identifier: AppManager.enableJITResultNotificationID, content: content, trigger: trigger)
+                                        UNUserNotificationCenter.current().add(request)
+                                    }
+                                    
+                                    self.finish(result)
+                                }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

AltStore/Operations/FetchAnisetteDataOperation.swift

@@ -0,0 +1,70 @@
+//
+//  FetchAnisetteDataOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 1/7/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltStoreCore
+import AltSign
+import Roxas
+
+@objc(FetchAnisetteDataOperation)
+class FetchAnisetteDataOperation: ResultOperation<ALTAnisetteData>
+{
+    let context: OperationContext
+    
+    init(context: OperationContext)
+    {
+        self.context = context
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard let server = self.context.server else { return self.finish(.failure(OperationError.invalidParameters)) }
+        
+        ServerManager.shared.connect(to: server) { (result) in
+            switch result
+            {
+            case .failure(let error):
+                self.finish(.failure(error))
+            case .success(let connection):
+                print("Sending anisette data request...")
+                
+                let request = AnisetteDataRequest()
+                connection.send(request) { (result) in
+                    print("Sent anisette data request!")
+                    
+                    switch result
+                    {
+                    case .failure(let error): self.finish(.failure(error))
+                    case .success:
+                        print("Waiting for anisette data...")
+                        connection.receiveResponse() { (result) in
+                            print("Receiving anisette data:", result.error?.localizedDescription ?? "success")
+                            
+                            switch result
+                            {
+                            case .failure(let error): self.finish(.failure(error))
+                            case .success(.error(let response)): self.finish(.failure(response.error))
+                            case .success(.anisetteData(let response)): self.finish(.success(response.anisetteData))
+                            case .success: self.finish(.failure(ALTServerError(.unknownRequest)))
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

AltStore/Operations/FetchAppIDsOperation.swift

@@ -0,0 +1,72 @@
+//
+//  FetchAppIDsOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 1/27/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltStoreCore
+import AltSign
+import Roxas
+
+@objc(FetchAppIDsOperation)
+class FetchAppIDsOperation: ResultOperation<([AppID], NSManagedObjectContext)>
+{
+    let context: AuthenticatedOperationContext
+    let managedObjectContext: NSManagedObjectContext
+    
+    init(context: AuthenticatedOperationContext, managedObjectContext: NSManagedObjectContext = DatabaseManager.shared.persistentContainer.newBackgroundContext())
+    {
+        self.context = context
+        self.managedObjectContext = managedObjectContext
+        
+        super.init()
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard
+            let team = self.context.team,
+            let session = self.context.session
+        else { return self.finish(.failure(OperationError.invalidParameters)) }
+                
+        ALTAppleAPI.shared.fetchAppIDs(for: team, session: session) { (appIDs, error) in
+            self.managedObjectContext.perform {
+                do
+                {
+                    let fetchedAppIDs = try Result(appIDs, error).get()
+                    
+                    guard let team = Team.first(satisfying: NSPredicate(format: "%K == %@", #keyPath(Team.identifier), team.identifier), in: self.managedObjectContext) else { throw OperationError.notAuthenticated }
+                    
+                    let fetchedIdentifiers = fetchedAppIDs.map { $0.identifier }
+                    
+                    let deletedAppIDsRequest = AppID.fetchRequest() as NSFetchRequest<AppID>
+                    deletedAppIDsRequest.predicate = NSPredicate(format: "%K == %@ AND NOT (%K IN %@)",
+                                                                 #keyPath(AppID.team), team,
+                                                                 #keyPath(AppID.identifier), fetchedIdentifiers)
+                    
+                    let deletedAppIDs = try self.managedObjectContext.fetch(deletedAppIDsRequest)
+                    deletedAppIDs.forEach { self.managedObjectContext.delete($0) }
+                    
+                    let appIDs = fetchedAppIDs.map { AppID($0, team: team, context: self.managedObjectContext) }
+                    self.finish(.success((appIDs, self.managedObjectContext)))
+                }
+                catch
+                {
+                    self.finish(.failure(error))
+                }
+            }
+        }
+    }
+}

AltStore/Operations/FetchProvisioningProfilesOperation.swift

@@ -0,0 +1,493 @@
+//
+//  FetchProvisioningProfilesOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 2/27/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltStoreCore
+import AltSign
+import Roxas
+
+@objc(FetchProvisioningProfilesOperation)
+class FetchProvisioningProfilesOperation: ResultOperation<[String: ALTProvisioningProfile]>
+{
+    let context: AppOperationContext
+    
+    var additionalEntitlements: [ALTEntitlement: Any]?
+    
+    private let appGroupsLock = NSLock()
+    
+    init(context: AppOperationContext)
+    {
+        self.context = context
+        
+        super.init()
+        
+        self.progress.totalUnitCount = 1
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard
+            let team = self.context.team,
+            let session = self.context.session
+        else { return self.finish(.failure(OperationError.invalidParameters)) }
+        
+        guard let app = self.context.app else { return self.finish(.failure(OperationError.appNotFound)) }
+        
+        self.progress.totalUnitCount = Int64(1 + app.appExtensions.count)
+        
+        self.prepareProvisioningProfile(for: app, parentApp: nil, team: team, session: session) { (result) in
+            do
+            {
+                self.progress.completedUnitCount += 1
+                
+                let profile = try result.get()
+                
+                var profiles = [app.bundleIdentifier: profile]
+                var error: Error?
+                
+                let dispatchGroup = DispatchGroup()
+                
+                for appExtension in app.appExtensions
+                {
+                    dispatchGroup.enter()
+                    
+                    self.prepareProvisioningProfile(for: appExtension, parentApp: app, team: team, session: session) { (result) in
+                        switch result
+                        {
+                        case .failure(let e): error = e
+                        case .success(let profile): profiles[appExtension.bundleIdentifier] = profile
+                        }
+                        
+                        dispatchGroup.leave()
+                        
+                        self.progress.completedUnitCount += 1
+                    }
+                }
+                
+                dispatchGroup.notify(queue: .global()) {
+                    if let error = error
+                    {
+                        self.finish(.failure(error))
+                    }
+                    else
+                    {
+                        self.finish(.success(profiles))
+                    }
+                }
+            }
+            catch
+            {
+                self.finish(.failure(error))
+            }
+        }
+    }
+    
+    func process<T>(_ result: Result<T, Error>) -> T?
+    {
+        switch result
+        {
+        case .failure(let error):
+            self.finish(.failure(error))
+            return nil
+            
+        case .success(let value):
+            guard !self.isCancelled else {
+                self.finish(.failure(OperationError.cancelled))
+                return nil
+            }
+            
+            return value
+        }
+    }
+}
+
+extension FetchProvisioningProfilesOperation
+{
+    func prepareProvisioningProfile(for app: ALTApplication, parentApp: ALTApplication?, team: ALTTeam, session: ALTAppleAPISession, completionHandler: @escaping (Result<ALTProvisioningProfile, Error>) -> Void)
+    {
+        DatabaseManager.shared.persistentContainer.performBackgroundTask { (context) in
+            
+            let preferredBundleID: String?
+            
+            // Check if we have already installed this app with this team before.
+            let predicate = NSPredicate(format: "%K == %@", #keyPath(InstalledApp.bundleIdentifier), app.bundleIdentifier)
+            if let installedApp = InstalledApp.first(satisfying: predicate, in: context)
+            {
+                // Teams match if installedApp.team has same identifier as team,
+                // or if installedApp.team is nil but resignedBundleIdentifier contains the team's identifier.
+                let teamsMatch = installedApp.team?.identifier == team.identifier || (installedApp.team == nil && installedApp.resignedBundleIdentifier.contains(team.identifier))
+                
+                #if DEBUG
+                
+                if app.isAltStoreApp
+                {
+                    // Use legacy bundle ID format for AltStore.
+                    preferredBundleID = "com.\(team.identifier).\(app.bundleIdentifier)"
+                }
+                else
+                {
+                    preferredBundleID = teamsMatch ? installedApp.resignedBundleIdentifier : nil
+                }
+                
+                #else
+                
+                if teamsMatch
+                {
+                    // This app is already installed with the same team, so use the same resigned bundle identifier as before.
+                    // This way, if we change the identifier format (again), AltStore will continue to use
+                    // the old bundle identifier to prevent it from installing as a new app.
+                    preferredBundleID = installedApp.resignedBundleIdentifier
+                }
+                else
+                {
+                    preferredBundleID = nil
+                }
+                
+                #endif
+            }
+            else
+            {
+                preferredBundleID = nil
+            }
+            
+            let bundleID: String
+            
+            if let preferredBundleID = preferredBundleID
+            {
+                bundleID = preferredBundleID
+            }
+            else
+            {
+                // This app isn't already installed, so create the resigned bundle identifier ourselves.
+                // Or, if the app _is_ installed but with a different team, we need to create a new
+                // bundle identifier anyway to prevent collisions with the previous team.
+                let parentBundleID = parentApp?.bundleIdentifier ?? app.bundleIdentifier
+                let updatedParentBundleID: String
+                
+                if app.isAltStoreApp
+                {
+                    // Use legacy bundle ID format for AltStore (and its extensions).
+                    updatedParentBundleID = "com.\(team.identifier).\(parentBundleID)"
+                }
+                else
+                {
+                    updatedParentBundleID = parentBundleID + "." + team.identifier // Append just team identifier to make it harder to track.
+                }
+                
+                bundleID = app.bundleIdentifier.replacingOccurrences(of: parentBundleID, with: updatedParentBundleID)
+            }
+            
+            let preferredName: String
+            
+            if let parentApp = parentApp
+            {
+                preferredName = parentApp.name + " " + app.name
+            }
+            else
+            {
+                preferredName = app.name
+            }
+            
+            // Register
+            self.registerAppID(for: app, name: preferredName, bundleIdentifier: bundleID, team: team, session: session) { (result) in
+                switch result
+                {
+                case .failure(let error): completionHandler(.failure(error))
+                case .success(let appID):
+                    
+                    // Update features
+                    self.updateFeatures(for: appID, app: app, team: team, session: session) { (result) in
+                        switch result
+                        {
+                        case .failure(let error): completionHandler(.failure(error))
+                        case .success(let appID):
+                            
+                            // Update app groups
+                            self.updateAppGroups(for: appID, app: app, team: team, session: session) { (result) in
+                                switch result
+                                {
+                                case .failure(let error): completionHandler(.failure(error))
+                                case .success(let appID):
+                                    
+                                    // Fetch Provisioning Profile
+                                    self.fetchProvisioningProfile(for: appID, team: team, session: session) { (result) in
+                                        completionHandler(result)
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    
+    func registerAppID(for application: ALTApplication, name: String, bundleIdentifier: String, team: ALTTeam, session: ALTAppleAPISession, completionHandler: @escaping (Result<ALTAppID, Error>) -> Void)
+    {
+        ALTAppleAPI.shared.fetchAppIDs(for: team, session: session) { (appIDs, error) in
+            do
+            {
+                let appIDs = try Result(appIDs, error).get()
+                
+                if let appID = appIDs.first(where: { $0.bundleIdentifier.lowercased() == bundleIdentifier.lowercased() })
+                {
+                    completionHandler(.success(appID))
+                }
+                else
+                {
+                    let requiredAppIDs = 1 + application.appExtensions.count
+                    let availableAppIDs = max(0, Team.maximumFreeAppIDs - appIDs.count)
+                    
+                    let sortedExpirationDates = appIDs.compactMap { $0.expirationDate }.sorted(by: { $0 < $1 })
+                    
+                    if team.type == .free
+                    {
+                        if requiredAppIDs > availableAppIDs
+                        {
+                            if let expirationDate = sortedExpirationDates.first
+                            {
+                                throw OperationError.maximumAppIDLimitReached(application: application, requiredAppIDs: requiredAppIDs, availableAppIDs: availableAppIDs, nextExpirationDate: expirationDate)
+                            }
+                            else
+                            {
+                                throw ALTAppleAPIError(.maximumAppIDLimitReached)
+                            }
+                        }
+                    }
+                    
+                    ALTAppleAPI.shared.addAppID(withName: name, bundleIdentifier: bundleIdentifier, team: team, session: session) { (appID, error) in
+                        do
+                        {
+                            do
+                            {
+                                let appID = try Result(appID, error).get()
+                                completionHandler(.success(appID))
+                            }
+                            catch ALTAppleAPIError.maximumAppIDLimitReached
+                            {
+                                if let expirationDate = sortedExpirationDates.first
+                                {
+                                    throw OperationError.maximumAppIDLimitReached(application: application, requiredAppIDs: requiredAppIDs, availableAppIDs: availableAppIDs, nextExpirationDate: expirationDate)
+                                }
+                                else
+                                {
+                                    throw ALTAppleAPIError(.maximumAppIDLimitReached)
+                                }
+                            }
+                        }
+                        catch
+                        {
+                            completionHandler(.failure(error))
+                        }
+                    }
+                }
+            }
+            catch
+            {
+                completionHandler(.failure(error))
+            }
+        }
+    }
+    
+    func updateFeatures(for appID: ALTAppID, app: ALTApplication, team: ALTTeam, session: ALTAppleAPISession, completionHandler: @escaping (Result<ALTAppID, Error>) -> Void)
+    {
+        var entitlements = app.entitlements
+        for (key, value) in additionalEntitlements ?? [:]
+        {
+            entitlements[key] = value
+        }
+        
+        let requiredFeatures = entitlements.compactMap { (entitlement, value) -> (ALTFeature, Any)? in
+            guard let feature = ALTFeature(entitlement: entitlement) else { return nil }
+            return (feature, value)
+        }
+        
+        var features = requiredFeatures.reduce(into: [ALTFeature: Any]()) { $0[$1.0] = $1.1 }
+        
+        if let applicationGroups = entitlements[.appGroups] as? [String], !applicationGroups.isEmpty
+        {
+            // App uses app groups, so assign `true` to enable the feature.
+            features[.appGroups] = true
+        }
+        else
+        {
+            // App has no app groups, so assign `false` to disable the feature.
+            features[.appGroups] = false
+        }
+        
+        var updateFeatures = false
+        
+        // Determine whether the required features are already enabled for the AppID.
+        for (feature, value) in features
+        {
+            if let appIDValue = appID.features[feature] as AnyObject?, (value as AnyObject).isEqual(appIDValue)
+            {
+                // AppID already has this feature enabled and the values are the same.
+                continue
+            }
+            else if appID.features[feature] == nil, let shouldEnableFeature = value as? Bool, !shouldEnableFeature
+            {
+                // AppID doesn't already have this feature enabled, but we want it disabled anyway.
+                continue
+            }
+            else
+            {
+                // AppID either doesn't have this feature enabled or the value has changed,
+                // so we need to update it to reflect new values.
+                updateFeatures = true
+                break
+            }
+        }
+        
+        if updateFeatures
+        {
+            let appID = appID.copy() as! ALTAppID
+            appID.features = features
+            
+            ALTAppleAPI.shared.update(appID, team: team, session: session) { (appID, error) in
+                completionHandler(Result(appID, error))
+            }
+        }
+        else
+        {
+            completionHandler(.success(appID))
+        }
+    }
+    
+    func updateAppGroups(for appID: ALTAppID, app: ALTApplication, team: ALTTeam, session: ALTAppleAPISession, completionHandler: @escaping (Result<ALTAppID, Error>) -> Void)
+    {
+        var entitlements = app.entitlements
+        for (key, value) in additionalEntitlements ?? [:]
+        {
+            entitlements[key] = value
+        }
+                
+        guard var applicationGroups = entitlements[.appGroups] as? [String], !applicationGroups.isEmpty else {
+            // Assigning an App ID to an empty app group array fails,
+            // so just do nothing if there are no app groups.
+            return completionHandler(.success(appID))
+        }
+        
+        if app.isAltStoreApp
+        {
+            // Potentially updating app groups for this specific AltStore.
+            // Find the (unique) AltStore app group, then replace it
+            // with the correct "base" app group ID.
+            // Otherwise, we may append a duplicate team identifier to the end.
+            if let index = applicationGroups.firstIndex(where: { $0.contains(Bundle.baseAltStoreAppGroupID) })
+            {
+                applicationGroups[index] = Bundle.baseAltStoreAppGroupID
+            }
+            else
+            {
+                applicationGroups.append(Bundle.baseAltStoreAppGroupID)
+            }
+        }
+        
+        // Dispatch onto global queue to prevent appGroupsLock deadlock.
+        DispatchQueue.global().async {
+            
+            // Ensure we're not concurrently fetching and updating app groups,
+            // which can lead to race conditions such as adding an app group twice.
+            self.appGroupsLock.lock()
+            
+            func finish(_ result: Result<ALTAppID, Error>)
+            {
+                self.appGroupsLock.unlock()
+                completionHandler(result)
+            }
+            
+            ALTAppleAPI.shared.fetchAppGroups(for: team, session: session) { (groups, error) in
+                switch Result(groups, error)
+                {
+                case .failure(let error): finish(.failure(error))
+                case .success(let fetchedGroups):
+                    let dispatchGroup = DispatchGroup()
+                    
+                    var groups = [ALTAppGroup]()
+                    var errors = [Error]()
+                    
+                    for groupIdentifier in applicationGroups
+                    {
+                        let adjustedGroupIdentifier = groupIdentifier + "." + team.identifier
+                        
+                        if let group = fetchedGroups.first(where: { $0.groupIdentifier == adjustedGroupIdentifier })
+                        {
+                            groups.append(group)
+                        }
+                        else
+                        {
+                            dispatchGroup.enter()
+                            
+                            // Not all characters are allowed in group names, so we replace periods with spaces (like Apple does).
+                            let name = "AltStore " + groupIdentifier.replacingOccurrences(of: ".", with: " ")
+                            
+                            ALTAppleAPI.shared.addAppGroup(withName: name, groupIdentifier: adjustedGroupIdentifier, team: team, session: session) { (group, error) in
+                                switch Result(group, error)
+                                {
+                                case .success(let group): groups.append(group)
+                                case .failure(let error): errors.append(error)
+                                }
+                                
+                                dispatchGroup.leave()
+                            }
+                        }
+                    }
+                    
+                    dispatchGroup.notify(queue: .global()) {
+                        if let error = errors.first
+                        {
+                            finish(.failure(error))
+                        }
+                        else
+                        {
+                            ALTAppleAPI.shared.assign(appID, to: Array(groups), team: team, session: session) { (success, error) in
+                                let result = Result(success, error)
+                                finish(result.map { _ in appID })
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    
+    func fetchProvisioningProfile(for appID: ALTAppID, team: ALTTeam, session: ALTAppleAPISession, completionHandler: @escaping (Result<ALTProvisioningProfile, Error>) -> Void)
+    {
+        ALTAppleAPI.shared.fetchProvisioningProfile(for: appID, deviceType: .iphone, team: team, session: session) { (profile, error) in
+            switch Result(profile, error)
+            {
+            case .failure(let error): completionHandler(.failure(error))
+            case .success(let profile):
+                
+                // Delete existing profile
+                ALTAppleAPI.shared.delete(profile, for: team, session: session) { (success, error) in
+                    switch Result(success, error)
+                    {
+                    case .failure(let error): completionHandler(.failure(error))
+                    case .success:
+                        
+                        // Fetch new provisiong profile
+                        ALTAppleAPI.shared.fetchProvisioningProfile(for: appID, deviceType: .iphone, team: team, session: session) { (profile, error) in
+                            completionHandler(Result(profile, error))
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

AltStore/Operations/FetchSourceOperation.swift

@@ -0,0 +1,107 @@
+//
+//  FetchSourceOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/30/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import CoreData
+
+import AltStoreCore
+import Roxas
+
+@objc(FetchSourceOperation)
+class FetchSourceOperation: ResultOperation<Source>
+{
+    let sourceURL: URL
+    let managedObjectContext: NSManagedObjectContext
+    
+    private let session: URLSession
+    
+    private lazy var dateFormatter: ISO8601DateFormatter = {
+        let dateFormatter = ISO8601DateFormatter()
+        return dateFormatter
+    }()
+    
+    init(sourceURL: URL, managedObjectContext: NSManagedObjectContext = DatabaseManager.shared.persistentContainer.newBackgroundContext())
+    {
+        self.sourceURL = sourceURL
+        self.managedObjectContext = managedObjectContext
+        
+        let configuration = URLSessionConfiguration.default
+        configuration.requestCachePolicy = .reloadIgnoringLocalCacheData
+        configuration.urlCache = nil
+        
+        self.session = URLSession(configuration: configuration)
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        let dataTask = self.session.dataTask(with: self.sourceURL) { (data, response, error) in
+            
+            let childContext = DatabaseManager.shared.persistentContainer.newBackgroundContext(withParent: self.managedObjectContext)
+            childContext.mergePolicy = NSOverwriteMergePolicy
+            childContext.perform {
+                do
+                {
+                    let (data, _) = try Result((data, response), error).get()
+                    
+                    let decoder = AltStoreCore.JSONDecoder()
+                    decoder.dateDecodingStrategy = .custom({ (decoder) -> Date in
+                        let container = try decoder.singleValueContainer()
+                        let text = try container.decode(String.self)
+                        
+                        // Full ISO8601 Format.
+                        self.dateFormatter.formatOptions = [.withFullDate, .withFullTime, .withTimeZone]
+                        if let date = self.dateFormatter.date(from: text)
+                        {
+                            return date
+                        }
+                        
+                        // Just date portion of ISO8601.
+                        self.dateFormatter.formatOptions = [.withFullDate]
+                        if let date = self.dateFormatter.date(from: text)
+                        {
+                            return date
+                        }
+                        
+                        throw DecodingError.dataCorruptedError(in: container, debugDescription: "Date is in invalid format.")
+                    })
+                    
+                    decoder.managedObjectContext = childContext
+                    decoder.sourceURL = self.sourceURL
+                    
+                    let source = try decoder.decode(Source.self, from: data)
+                    let identifier = source.identifier
+                    
+                    try childContext.save()
+                    
+                    self.managedObjectContext.perform {
+                        if let source = Source.first(satisfying: NSPredicate(format: "%K == %@", #keyPath(Source.identifier), identifier), in: self.managedObjectContext)
+                        {
+                            self.finish(.success(source))
+                        }
+                        else
+                        {
+                            self.finish(.failure(OperationError.noSources))
+                        }
+                    }
+                }
+                catch
+                {
+                    self.managedObjectContext.perform {
+                        self.finish(.failure(error))
+                    }
+                }
+            }
+        }
+        
+        self.progress.addChild(dataTask.progress, withPendingUnitCount: 1)
+        
+        dataTask.resume()
+    }
+}

AltStore/Operations/FetchTrustedSourcesOperation.swift

@@ -0,0 +1,65 @@
+//
+//  FetchTrustedSourcesOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 4/13/22.
+//  Copyright © 2022 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+private extension URL
+{
+    #if STAGING
+    static let trustedSources = URL(string: "https://f000.backblazeb2.com/file/altstore-staging/altstore/trustedsources.json")!
+    #else
+    static let trustedSources = URL(string: "https://cdn.altstore.io/file/altstore/altstore/trustedsources.json")!
+    #endif
+}
+
+extension FetchTrustedSourcesOperation
+{
+    struct TrustedSource: Decodable
+    {
+        var identifier: String
+        var sourceURL: URL?
+    }
+    
+    private struct Response: Decodable
+    {
+        var version: Int
+        var sources: [FetchTrustedSourcesOperation.TrustedSource]
+    }
+}
+
+class FetchTrustedSourcesOperation: ResultOperation<[FetchTrustedSourcesOperation.TrustedSource]>
+{
+    override func main()
+    {
+        super.main()
+        
+        let dataTask = URLSession.shared.dataTask(with: .trustedSources) { (data, response, error) in
+            do
+            {
+                if let response = response as? HTTPURLResponse
+                {
+                    guard response.statusCode != 404 else {
+                        self.finish(.failure(URLError(.fileDoesNotExist, userInfo: [NSURLErrorKey: URL.trustedSources])))
+                        return
+                    }
+                }
+                
+                guard let data = data else { throw error! }
+                
+                let response = try Foundation.JSONDecoder().decode(Response.self, from: data)
+                self.finish(.success(response.sources))
+            }
+            catch
+            {
+                self.finish(.failure(error))
+            }
+        }
+        
+        dataTask.resume()
+    }
+}

AltStore/Operations/FindServerOperation.swift

@@ -0,0 +1,131 @@
+//
+//  FindServerOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 9/8/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltStoreCore
+import Roxas
+
+private let ReceivedServerConnectionResponse: @convention(c) (CFNotificationCenter?, UnsafeMutableRawPointer?, CFNotificationName?, UnsafeRawPointer?, CFDictionary?) -> Void =
+{ (center, observer, name, object, userInfo) in
+    guard let name = name, let observer = observer else { return }
+    
+    let operation = unsafeBitCast(observer, to: FindServerOperation.self)
+    operation.handle(name)
+}
+
+@objc(FindServerOperation)
+class FindServerOperation: ResultOperation<Server>
+{
+    let context: OperationContext
+    
+    private var isWiredServerConnectionAvailable = false
+    private var localServerMachServiceName: String?
+    
+    init(context: OperationContext = OperationContext())
+    {
+        self.context = context
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        if let server = self.context.server
+        {
+            self.finish(.success(server))
+            return
+        }
+        
+        let notificationCenter = CFNotificationCenterGetDarwinNotifyCenter()
+        let observer = Unmanaged.passUnretained(self).toOpaque()
+        
+        // Prepare observers to receive callback from wired connection or background daemon (if available).
+        CFNotificationCenterAddObserver(notificationCenter, observer, ReceivedServerConnectionResponse, CFNotificationName.wiredServerConnectionAvailableResponse.rawValue, nil, .deliverImmediately)
+        
+        // Post notifications.
+        CFNotificationCenterPostNotification(notificationCenter, .wiredServerConnectionAvailableRequest, nil, nil, true)
+        
+        self.discoverLocalServer()
+        
+        // Wait for either callback or timeout.
+        DispatchQueue.global().asyncAfter(deadline: .now() + 1.0) {
+            if let machServiceName = self.localServerMachServiceName
+            {
+                // Prefer background daemon, if it exists and is running.
+                let server = Server(connectionType: .local, machServiceName: machServiceName)
+                self.finish(.success(server))
+            }
+            else if self.isWiredServerConnectionAvailable
+            {
+                let server = Server(connectionType: .wired)
+                self.finish(.success(server))
+            }
+            else if let server = ServerManager.shared.discoveredServers.first(where: { $0.isPreferred })
+            {
+                // Preferred server.
+                self.finish(.success(server))
+            }
+            else if let server = ServerManager.shared.discoveredServers.first
+            {
+                // Any available server.
+                self.finish(.success(server))
+            }
+            else
+            {
+                // No servers.
+                self.finish(.failure(ConnectionError.serverNotFound))
+            }
+        }
+    }
+    
+    override func finish(_ result: Result<Server, Error>)
+    {
+        super.finish(result)
+        
+        let notificationCenter = CFNotificationCenterGetDarwinNotifyCenter()
+        let observer = Unmanaged.passUnretained(self).toOpaque()
+        
+        CFNotificationCenterRemoveObserver(notificationCenter, observer, .wiredServerConnectionAvailableResponse, nil)
+    }
+}
+
+fileprivate extension FindServerOperation
+{
+    func discoverLocalServer()
+    {
+        for machServiceName in XPCConnection.machServiceNames
+        {
+            let xpcConnection = NSXPCConnection.makeConnection(machServiceName: machServiceName)
+            
+            let connection = XPCConnection(xpcConnection)
+            connection.connect { (result) in
+                switch result
+                {
+                case .failure(let error): print("Could not connect to AltDaemon XPC service \(machServiceName).", error)
+                case .success: self.localServerMachServiceName = machServiceName
+                }
+            }
+        }
+    }
+    
+    func handle(_ notification: CFNotificationName)
+    {
+        switch notification
+        {
+        case .wiredServerConnectionAvailableResponse: self.isWiredServerConnectionAvailable = true
+        default: break
+        }
+    }
+}

AltStore/Operations/InstallAppOperation.swift

@@ -0,0 +1,248 @@
+//
+//  InstallAppOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/19/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import Network
+
+import AltStoreCore
+import AltSign
+import Roxas
+
+@objc(InstallAppOperation)
+class InstallAppOperation: ResultOperation<InstalledApp>
+{
+    let context: InstallAppOperationContext
+    
+    private var didCleanUp = false
+    
+    init(context: InstallAppOperationContext)
+    {
+        self.context = context
+        
+        super.init()
+        
+        self.progress.totalUnitCount = 100
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard
+            let certificate = self.context.certificate,
+            let resignedApp = self.context.resignedApp,
+            let connection = self.context.installationConnection
+        else { return self.finish(.failure(OperationError.invalidParameters)) }
+        
+        let backgroundContext = DatabaseManager.shared.persistentContainer.newBackgroundContext()
+        backgroundContext.perform {
+            
+            /* App */
+            let installedApp: InstalledApp
+            
+            // Fetch + update rather than insert + resolve merge conflicts to prevent potential context-level conflicts.
+            if let app = InstalledApp.first(satisfying: NSPredicate(format: "%K == %@", #keyPath(InstalledApp.bundleIdentifier), self.context.bundleIdentifier), in: backgroundContext)
+            {
+                installedApp = app
+            }
+            else
+            {
+                installedApp = InstalledApp(resignedApp: resignedApp, originalBundleIdentifier: self.context.bundleIdentifier, certificateSerialNumber: certificate.serialNumber, context: backgroundContext)
+            }
+            
+            installedApp.update(resignedApp: resignedApp, certificateSerialNumber: certificate.serialNumber)
+            installedApp.needsResign = false
+            
+            if let team = DatabaseManager.shared.activeTeam(in: backgroundContext)
+            {
+                installedApp.team = team
+            }
+            
+            /* App Extensions */
+            var installedExtensions = Set<InstalledExtension>()
+            
+            if
+                let bundle = Bundle(url: resignedApp.fileURL),
+                let directory = bundle.builtInPlugInsURL,
+                let enumerator = FileManager.default.enumerator(at: directory, includingPropertiesForKeys: nil, options: [.skipsSubdirectoryDescendants])
+            {
+                for case let fileURL as URL in enumerator
+                {
+                    guard let appExtensionBundle = Bundle(url: fileURL) else { continue }
+                    guard let appExtension = ALTApplication(fileURL: appExtensionBundle.bundleURL) else { continue }
+                    
+                    let parentBundleID = self.context.bundleIdentifier
+                    let resignedParentBundleID = resignedApp.bundleIdentifier
+                    
+                    let resignedBundleID = appExtension.bundleIdentifier
+                    let originalBundleID = resignedBundleID.replacingOccurrences(of: resignedParentBundleID, with: parentBundleID)
+                    
+                    let installedExtension: InstalledExtension
+                    
+                    if let appExtension = installedApp.appExtensions.first(where: { $0.bundleIdentifier == originalBundleID })
+                    {
+                        installedExtension = appExtension
+                    }
+                    else
+                    {
+                        installedExtension = InstalledExtension(resignedAppExtension: appExtension, originalBundleIdentifier: originalBundleID, context: backgroundContext)
+                    }
+                    
+                    installedExtension.update(resignedAppExtension: appExtension)
+                    
+                    installedExtensions.insert(installedExtension)
+                }
+            }
+            
+            installedApp.appExtensions = installedExtensions
+            
+            self.context.beginInstallationHandler?(installedApp)
+            
+            // Temporary directory and resigned .ipa no longer needed, so delete them now to ensure AltStore doesn't quit before we get the chance to.
+            self.cleanUp()
+            
+            var activeProfiles: Set<String>?
+            if let sideloadedAppsLimit = UserDefaults.standard.activeAppsLimit
+            {
+                // When installing these new profiles, AltServer will remove all non-active profiles to ensure we remain under limit.
+                
+                let fetchRequest = InstalledApp.activeAppsFetchRequest()
+                fetchRequest.includesPendingChanges = false
+                
+                var activeApps = InstalledApp.fetch(fetchRequest, in: backgroundContext)
+                if !activeApps.contains(installedApp)
+                {
+                    let activeAppsCount = activeApps.map { $0.requiredActiveSlots }.reduce(0, +)
+                    
+                    let availableActiveApps = max(sideloadedAppsLimit - activeAppsCount, 0)
+                    if installedApp.requiredActiveSlots <= availableActiveApps
+                    {
+                        // This app has not been explicitly activated, but there are enough slots available,
+                        // so implicitly activate it.
+                        installedApp.isActive = true
+                        activeApps.append(installedApp)
+                    }
+                    else
+                    {
+                        installedApp.isActive = false
+                    }
+                }
+
+                activeProfiles = Set(activeApps.flatMap { (installedApp) -> [String] in
+                    let appExtensionProfiles = installedApp.appExtensions.map { $0.resignedBundleIdentifier }
+                    return [installedApp.resignedBundleIdentifier] + appExtensionProfiles
+                })
+            }
+            
+            let request = BeginInstallationRequest(activeProfiles: activeProfiles, bundleIdentifier: installedApp.resignedBundleIdentifier)
+            connection.send(request) { (result) in
+                switch result
+                {
+                case .failure(let error): self.finish(.failure(error))
+                case .success:
+                    
+                    self.receive(from: connection) { (result) in
+                        switch result
+                        {
+                        case .success:
+                            backgroundContext.perform {
+                                installedApp.refreshedDate = Date()
+                                self.finish(.success(installedApp))
+                            }
+                            
+                        case .failure(let error):
+                            self.finish(.failure(error))
+                        }
+                    }
+                }
+            }
+        }
+    }
+    
+    override func finish(_ result: Result<InstalledApp, Error>)
+    {
+        self.cleanUp()
+        
+        // Only remove refreshed IPA when finished.
+        if let app = self.context.app
+        {
+            let fileURL = InstalledApp.refreshedIPAURL(for: app)
+            
+            do
+            {
+                try FileManager.default.removeItem(at: fileURL)
+            }
+            catch
+            {
+                print("Failed to remove refreshed .ipa:", error)
+            }
+        }
+        
+        super.finish(result)
+    }
+}
+
+private extension InstallAppOperation
+{
+    func receive(from connection: ServerConnection, completionHandler: @escaping (Result<Void, Error>) -> Void)
+    {
+        connection.receiveResponse() { (result) in
+            do
+            {
+                let response = try result.get()
+                print(response)
+                
+                switch response
+                {
+                case .installationProgress(let response):
+                    if response.progress == 1.0
+                    {
+                        self.progress.completedUnitCount = self.progress.totalUnitCount
+                        completionHandler(.success(()))
+                    }
+                    else
+                    {
+                        self.progress.completedUnitCount = Int64(response.progress * 100)
+                        self.receive(from: connection, completionHandler: completionHandler)
+                    }
+                    
+                case .error(let response):
+                    completionHandler(.failure(response.error))
+                    
+                default:
+                    completionHandler(.failure(ALTServerError(.unknownRequest)))
+                }
+            }
+            catch
+            {
+                completionHandler(.failure(ALTServerError(error)))
+            }
+        }
+    }
+    
+    func cleanUp()
+    {
+        guard !self.didCleanUp else { return }
+        self.didCleanUp = true
+        
+        do
+        {
+            try FileManager.default.removeItem(at: self.context.temporaryDirectory)
+        }
+        catch
+        {
+            print("Failed to remove temporary directory.", error)
+        }
+    }
+}

AltStore/Operations/Operation.swift

@@ -0,0 +1,93 @@
+//
+//  Operation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/7/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import Roxas
+
+class ResultOperation<ResultType>: Operation
+{
+    var resultHandler: ((Result<ResultType, Error>) -> Void)?
+    
+    @available(*, unavailable)
+    override func finish()
+    {
+        super.finish()
+    }
+
+    func finish(_ result: Result<ResultType, Error>)
+    {
+        guard !self.isFinished else { return }
+        
+        if self.isCancelled
+        {
+            self.resultHandler?(.failure(OperationError.cancelled))
+        }
+        else
+        {
+            self.resultHandler?(result)
+        }
+        
+        super.finish()
+    }
+}
+
+class Operation: RSTOperation, ProgressReporting
+{
+    let progress = Progress.discreteProgress(totalUnitCount: 1)
+    
+    private var backgroundTaskID: UIBackgroundTaskIdentifier?
+    
+    override var isAsynchronous: Bool {
+        return true
+    }
+    
+    override init()
+    {
+        super.init()
+        
+        self.progress.cancellationHandler = { [weak self] in self?.cancel() }
+    }
+    
+    override func cancel()
+    {
+        super.cancel()
+        
+        if !self.progress.isCancelled
+        {
+            self.progress.cancel()
+        }
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        let name = "com.altstore." + NSStringFromClass(type(of: self))
+        self.backgroundTaskID = UIApplication.shared.beginBackgroundTask(withName: name) { [weak self] in
+            guard let backgroundTask = self?.backgroundTaskID else { return }
+            
+            self?.cancel()
+            
+            UIApplication.shared.endBackgroundTask(backgroundTask)
+            self?.backgroundTaskID = .invalid
+        }        
+    }
+    
+    override func finish()
+    {
+        guard !self.isFinished else { return }
+        
+        super.finish()
+        
+        if let backgroundTaskID = self.backgroundTaskID
+        {
+            UIApplication.shared.endBackgroundTask(backgroundTaskID)
+            self.backgroundTaskID = .invalid
+        }
+    }
+}

AltStore/Operations/OperationContexts.swift

@@ -0,0 +1,119 @@
+//
+//  Contexts.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/20/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import CoreData
+import Network
+
+import AltStoreCore
+import AltSign
+
+class OperationContext
+{
+    var server: Server?
+    var error: Error?
+    
+    var presentingViewController: UIViewController?
+    
+    let operations: NSHashTable<Foundation.Operation>
+    
+    init(server: Server? = nil, error: Error? = nil, operations: [Foundation.Operation] = [])
+    {
+        self.server = server
+        self.error = error
+        
+        self.operations = NSHashTable<Foundation.Operation>.weakObjects()
+        for operation in operations
+        {
+            self.operations.add(operation)
+        }
+    }
+    
+    convenience init(context: OperationContext)
+    {
+        self.init(server: context.server, error: context.error, operations: context.operations.allObjects)
+    }
+}
+
+class AuthenticatedOperationContext: OperationContext
+{
+    var session: ALTAppleAPISession?
+    
+    var team: ALTTeam?
+    var certificate: ALTCertificate?
+    
+    weak var authenticationOperation: AuthenticationOperation?
+    
+    convenience init(context: AuthenticatedOperationContext)
+    {
+        self.init(server: context.server, error: context.error, operations: context.operations.allObjects)
+        
+        self.session = context.session
+        self.team = context.team
+        self.certificate = context.certificate
+        self.authenticationOperation = context.authenticationOperation
+    }
+}
+
+@dynamicMemberLookup
+class AppOperationContext
+{
+    let bundleIdentifier: String
+    let authenticatedContext: AuthenticatedOperationContext
+    
+    var app: ALTApplication?
+    var provisioningProfiles: [String: ALTProvisioningProfile]?
+    
+    var isFinished = false
+    
+    var error: Error? {
+        get {
+            return _error ?? self.authenticatedContext.error
+        }
+        set {
+            _error = newValue
+        }
+    }
+    private var _error: Error?
+    
+    init(bundleIdentifier: String, authenticatedContext: AuthenticatedOperationContext)
+    {
+        self.bundleIdentifier = bundleIdentifier
+        self.authenticatedContext = authenticatedContext
+    }
+    
+    subscript<T>(dynamicMember keyPath: WritableKeyPath<AuthenticatedOperationContext, T>) -> T
+    {
+        return self.authenticatedContext[keyPath: keyPath]
+    }
+}
+
+class InstallAppOperationContext: AppOperationContext
+{
+    lazy var temporaryDirectory: URL = {
+        let temporaryDirectory = FileManager.default.uniqueTemporaryURL()
+        
+        do { try FileManager.default.createDirectory(at: temporaryDirectory, withIntermediateDirectories: true, attributes: nil) }
+        catch { self.error = error }
+        
+        return temporaryDirectory
+    }()
+    
+    var resignedApp: ALTApplication?
+    var installationConnection: ServerConnection?
+    var installedApp: InstalledApp? {
+        didSet {
+            self.installedAppContext = self.installedApp?.managedObjectContext
+        }
+    }
+    private var installedAppContext: NSManagedObjectContext?
+    
+    var beginInstallationHandler: ((InstalledApp) -> Void)?
+    
+    var alternateIconURL: URL?
+}

AltStore/Operations/OperationError.swift

@@ -0,0 +1,92 @@
+//
+//  OperationError.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/7/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import AltSign
+
+enum OperationError: LocalizedError
+{
+    case unknown
+    case unknownResult
+    case cancelled
+    case timedOut
+    
+    case notAuthenticated
+    case appNotFound
+    
+    case unknownUDID
+    
+    case invalidApp
+    case invalidParameters
+    
+    case maximumAppIDLimitReached(application: ALTApplication, requiredAppIDs: Int, availableAppIDs: Int, nextExpirationDate: Date)
+    
+    case noSources
+    
+    case openAppFailed(name: String)
+    case missingAppGroup
+    
+    var failureReason: String? {
+        switch self {
+        case .unknown: return NSLocalizedString("An unknown error occured.", comment: "")
+        case .unknownResult: return NSLocalizedString("The operation returned an unknown result.", comment: "")
+        case .cancelled: return NSLocalizedString("The operation was cancelled.", comment: "")
+        case .timedOut: return NSLocalizedString("The operation timed out.", comment: "")
+        case .notAuthenticated: return NSLocalizedString("You are not signed in.", comment: "")
+        case .appNotFound: return NSLocalizedString("App not found.", comment: "")
+        case .unknownUDID: return NSLocalizedString("Unknown device UDID.", comment: "")
+        case .invalidApp: return NSLocalizedString("The app is invalid.", comment: "")
+        case .invalidParameters: return NSLocalizedString("Invalid parameters.", comment: "")
+        case .noSources: return NSLocalizedString("There are no AltStore sources.", comment: "")
+        case .openAppFailed(let name): return String(format: NSLocalizedString("AltStore was denied permission to launch %@.", comment: ""), name)
+        case .missingAppGroup: return NSLocalizedString("AltStore's shared app group could not be found.", comment: "")
+        case .maximumAppIDLimitReached: return NSLocalizedString("Cannot register more than 10 App IDs.", comment: "")
+        }
+    }
+    
+    var recoverySuggestion: String? {
+        switch self
+        {
+        case .maximumAppIDLimitReached(let application, let requiredAppIDs, let availableAppIDs, let date):
+            let baseMessage = NSLocalizedString("Delete sideloaded apps to free up App ID slots.", comment: "")
+            let message: String
+            
+            if requiredAppIDs > 1
+            {
+                let availableText: String
+                
+                switch availableAppIDs
+                {
+                case 0: availableText = NSLocalizedString("none are available", comment: "")
+                case 1: availableText = NSLocalizedString("only 1 is available", comment: "")
+                default: availableText = String(format: NSLocalizedString("only %@ are available", comment: ""), NSNumber(value: availableAppIDs))
+                }
+                
+                let prefixMessage = String(format: NSLocalizedString("%@ requires %@ App IDs, but %@.", comment: ""), application.name, NSNumber(value: requiredAppIDs), availableText)
+                message = prefixMessage + " " + baseMessage
+            }
+            else
+            {
+                let dateComponents = Calendar.current.dateComponents([.day, .hour, .minute], from: Date(), to: date)
+                
+                let dateComponentsFormatter = DateComponentsFormatter()
+                dateComponentsFormatter.maximumUnitCount = 1
+                dateComponentsFormatter.unitsStyle = .full
+                
+                let remainingTime = dateComponentsFormatter.string(from: dateComponents)!
+                
+                let remainingTimeMessage = String(format: NSLocalizedString("You can register another App ID in %@.", comment: ""), remainingTime)
+                message = baseMessage + " " + remainingTimeMessage
+            }
+            
+            return message
+            
+        default: return nil
+        }
+    }
+}

AltStore/Operations/Patch App/ALTAppPatcher.h

@@ -0,0 +1,19 @@
+//
+//  ALTAppPatcher.h
+//  AltStore
+//
+//  Created by Riley Testut on 10/18/21.
+//  Copyright © 2021 Riley Testut. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface ALTAppPatcher : NSObject
+
+- (BOOL)patchAppBinaryAtURL:(NSURL *)appFileURL withBinaryAtURL:(NSURL *)patchFileURL error:(NSError *_Nullable *)error;
+
+@end
+
+NS_ASSUME_NONNULL_END

AltStore/Operations/Patch App/ALTAppPatcher.m

@@ -0,0 +1,143 @@
+//
+//  ALTAppPatcher.m
+//  AltStore
+//
+//  Created by Riley Testut on 10/18/21.
+//  Copied with minor modifications from sample code provided by Linus Henze.
+//
+
+#import "ALTAppPatcher.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+@import Roxas;
+
+#define CPU_SUBTYPE_PAC    0x80000000
+#define FAT_MAGIC 0xcafebabe
+
+#define ROUND_TO_PAGE(val) (((val % 0x4000) == 0) ? val : (val + (0x4000 - (val & 0x3FFF))))
+
+typedef struct {
+    uint32_t magic;
+    uint32_t cpuType;
+    uint32_t cpuSubType;
+    // Incomplete, we don't need anything else
+} MachOHeader;
+
+typedef struct {
+    uint32_t cpuType;
+    uint32_t cpuSubType;
+    uint32_t fileOffset;
+    uint32_t size;
+    uint32_t alignment;
+} FatArch;
+
+typedef struct {
+    uint32_t magic;
+    uint32_t archCount;
+    FatArch  archs[0];
+} FatHeader;
+
+// Given two MachO files, return a FAT file with the following properties:
+// 1. installd will still see the original MachO and validate it's code signature
+// 2. The kernel will only see the injected MachO instead
+//
+// Only arm64e for now
+void *injectApp(void *originalApp, size_t originalAppSize, void *appToInject, size_t appToInjectSize, size_t *outputSize) {
+    *outputSize = 0;
+    
+    // First validate the App to inject: It must be an arm64e application
+    if (appToInjectSize < sizeof(MachOHeader)) {
+        return NULL;
+    }
+    
+    MachOHeader *injectedHeader = (MachOHeader*) appToInject;
+    if (injectedHeader->cpuType != CPU_TYPE_ARM64) {
+        return NULL;
+    }
+    
+    if (injectedHeader->cpuSubType != (CPU_SUBTYPE_ARM64E | CPU_SUBTYPE_PAC)) {
+        return NULL;
+    }
+    
+    // Ok, the App to inject is ok
+    // Now build a fat header
+    size_t originalAppSizeRounded = ROUND_TO_PAGE(originalAppSize);
+    size_t appToInjectSizeRounded = ROUND_TO_PAGE(appToInjectSize);
+    size_t totalSize = 0x4000 /* Fat Header + Alignment */ + originalAppSizeRounded + appToInjectSizeRounded;
+    
+    void *fatBuf = malloc(totalSize);
+    if (fatBuf == NULL) {
+        return NULL;
+    }
+    
+    bzero(fatBuf, totalSize);
+    
+    FatHeader *fatHeader = (FatHeader*) fatBuf;
+    fatHeader->magic = htonl(FAT_MAGIC);
+    fatHeader->archCount = htonl(2);
+    
+    // Write first arch (original app)
+    fatHeader->archs[0].cpuType    = htonl(CPU_TYPE_ARM64);
+    fatHeader->archs[0].cpuSubType = htonl(CPU_SUBTYPE_ARM64E); /* Note that this is not a valid cpu subtype */
+    fatHeader->archs[0].fileOffset = htonl(0x4000);
+    fatHeader->archs[0].size       = htonl(originalAppSize);
+    fatHeader->archs[0].alignment  = htonl(0xE);
+    
+    // Write second arch (injected app)
+    fatHeader->archs[1].cpuType    = htonl(CPU_TYPE_ARM64);
+    fatHeader->archs[1].cpuSubType = htonl(CPU_SUBTYPE_ARM64E | CPU_SUBTYPE_PAC);
+    fatHeader->archs[1].fileOffset = htonl(0x4000 + originalAppSizeRounded);
+    fatHeader->archs[1].size       = htonl(appToInjectSize);
+    fatHeader->archs[1].alignment  = htonl(0xE);
+    
+    // Ok, now write the MachOs
+    memcpy(fatBuf + 0x4000, originalApp, originalAppSize);
+    memcpy(fatBuf + 0x4000 + originalAppSizeRounded, appToInject, appToInjectSize);
+    
+    // We're done!
+    *outputSize = totalSize;
+    return fatBuf;
+}
+
+@implementation ALTAppPatcher
+
+- (BOOL)patchAppBinaryAtURL:(NSURL *)appFileURL withBinaryAtURL:(NSURL *)patchFileURL error:(NSError *__autoreleasing *)error
+{
+    NSMutableData *originalApp = [NSMutableData dataWithContentsOfURL:appFileURL options:0 error:error];
+    if (originalApp == nil)
+    {
+        return NO;
+    }
+    
+    NSMutableData *injectedApp = [NSMutableData dataWithContentsOfURL:patchFileURL options:0 error:error];
+    if (injectedApp == nil)
+    {
+        return NO;
+    }
+
+    size_t outputSize = 0;
+    void *output = injectApp(originalApp.mutableBytes, originalApp.length, injectedApp.mutableBytes, injectedApp.length, &outputSize);
+    if (output == NULL)
+    {
+        if (error)
+        {
+            // If injectApp fails, it means the patch app is in the wrong format.
+            *error = [NSError errorWithDomain:NSCocoaErrorDomain code:NSFileReadCorruptFileError userInfo:@{NSURLErrorKey: patchFileURL}];
+        }
+        
+        return NO;
+    }
+    
+    NSData *outputData = [NSData dataWithBytesNoCopy:output length:outputSize freeWhenDone:YES];
+    if (![outputData writeToURL:appFileURL options:NSDataWritingAtomic error:error])
+    {
+        return NO;
+    }
+    
+    return YES;
+}
+
+@end

AltStore/Operations/Patch App/PatchApp.storyboard

@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="19162" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="WBb-E1-bN8">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="19144"/>
+        <capability name="Named colors" minToolsVersion="9.0"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--Navigation Controller-->
+        <scene sceneID="dx2-fp-qDX">
+            <objects>
+                <navigationController automaticallyAdjustsScrollViewInsets="NO" id="WBb-E1-bN8" sceneMemberID="viewController">
+                    <toolbarItems/>
+                    <navigationBar key="navigationBar" contentMode="scaleToFill" barStyle="black" id="cVa-8m-fW6" customClass="NavigationBar" customModule="AltStore" customModuleProvider="target">
+                        <rect key="frame" x="0.0" y="44" width="414" height="44"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                        <color key="barTintColor" name="SettingsBackground"/>
+                    </navigationBar>
+                    <nil name="viewControllers"/>
+                    <connections>
+                        <segue destination="idH-XF-rK8" kind="relationship" relationship="rootViewController" id="hSJ-tL-4nB"/>
+                    </connections>
+                </navigationController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="i7K-pi-SRe" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="137.68115942028987" y="137.94642857142856"/>
+        </scene>
+        <!--Patch View Controller-->
+        <scene sceneID="gJ4-4F-79r">
+            <objects>
+                <viewController id="idH-XF-rK8" customClass="PatchViewController" customModule="AltStore" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" id="4bV-S5-z7S">
+                        <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="RHK-C5-7wu" customClass="RSTPlaceholderView">
+                                <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                            </view>
+                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="8" translatesAutoresizingMaskIntoConstraints="NO" id="PjB-Dc-9n3">
+                                <rect key="frame" x="20" y="736.5" width="374" height="117.5"/>
+                                <subviews>
+                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text=" " textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="GQF-6P-Fit">
+                                        <rect key="frame" x="0.0" y="0.0" width="374" height="20.5"/>
+                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                        <color key="textColor" name="Text"/>
+                                        <nil key="highlightedColor"/>
+                                    </label>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="SNn-Ad-ICf" customClass="PillButton" customModule="AltStore" customModuleProvider="target">
+                                        <rect key="frame" x="0.0" y="28.5" width="374" height="51"/>
+                                        <color key="backgroundColor" name="SettingsHighlighted"/>
+                                        <constraints>
+                                            <constraint firstAttribute="height" constant="51" id="s4X-uf-nl9"/>
+                                        </constraints>
+                                        <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="19"/>
+                                        <color key="tintColor" name="SettingsHighlighted"/>
+                                        <state key="normal" title="Install Untethered Jailbreak">
+                                            <color key="titleColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                        </state>
+                                        <connections>
+                                            <action selector="performButtonAction" destination="idH-XF-rK8" eventType="primaryActionTriggered" id="FxO-1Y-IML"/>
+                                        </connections>
+                                    </button>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="leJ-09-giz">
+                                        <rect key="frame" x="0.0" y="87.5" width="374" height="30"/>
+                                        <fontDescription key="fontDescription" type="boldSystem" pointSize="15"/>
+                                        <state key="normal" title="Install Without Untethering">
+                                            <color key="titleColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                        </state>
+                                        <connections>
+                                            <action selector="installRegularJailbreak" destination="idH-XF-rK8" eventType="primaryActionTriggered" id="1XB-11-Kdn"/>
+                                        </connections>
+                                    </button>
+                                </subviews>
+                            </stackView>
+                        </subviews>
+                        <viewLayoutGuide key="safeArea" id="H6g-xA-DdL"/>
+                        <color key="backgroundColor" name="SettingsBackground"/>
+                        <constraints>
+                            <constraint firstItem="RHK-C5-7wu" firstAttribute="top" secondItem="4bV-S5-z7S" secondAttribute="top" id="CVK-6E-iA6"/>
+                            <constraint firstAttribute="trailingMargin" secondItem="PjB-Dc-9n3" secondAttribute="trailing" id="GOg-JU-LIP"/>
+                            <constraint firstItem="RHK-C5-7wu" firstAttribute="bottom" secondItem="4bV-S5-z7S" secondAttribute="bottom" id="LPh-J8-IVx"/>
+                            <constraint firstItem="PjB-Dc-9n3" firstAttribute="leading" secondItem="4bV-S5-z7S" secondAttribute="leadingMargin" id="Rlg-PC-5ZN"/>
+                            <constraint firstItem="RHK-C5-7wu" firstAttribute="trailing" secondItem="H6g-xA-DdL" secondAttribute="trailing" id="XdZ-36-6yS"/>
+                            <constraint firstAttribute="bottomMargin" secondItem="PjB-Dc-9n3" secondAttribute="bottom" id="hTS-nX-0xv"/>
+                            <constraint firstItem="RHK-C5-7wu" firstAttribute="leading" secondItem="H6g-xA-DdL" secondAttribute="leading" id="lzV-fG-Xv6"/>
+                        </constraints>
+                    </view>
+                    <navigationItem key="navigationItem" largeTitleDisplayMode="always" id="0J1-80-RD8">
+                        <barButtonItem key="leftBarButtonItem" systemItem="cancel" id="vtw-PQ-Dk1">
+                            <color key="tintColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                            <connections>
+                                <action selector="cancel" destination="idH-XF-rK8" id="4Wk-dv-RYG"/>
+                            </connections>
+                        </barButtonItem>
+                    </navigationItem>
+                    <simulatedNavigationBarMetrics key="simulatedTopBarMetrics" prompted="NO"/>
+                    <connections>
+                        <outlet property="cancelBarButtonItem" destination="vtw-PQ-Dk1" id="8Mh-GU-KD5"/>
+                        <outlet property="cancelButton" destination="leJ-09-giz" id="BNh-I3-vXc"/>
+                        <outlet property="pillButton" destination="SNn-Ad-ICf" id="iJg-TC-p8q"/>
+                        <outlet property="placeholderView" destination="RHK-C5-7wu" id="5x0-sg-HAH"/>
+                        <outlet property="taskDescriptionLabel" destination="GQF-6P-Fit" id="C4c-xy-kvU"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="8ev-19-qsi" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="1001" y="138"/>
+        </scene>
+    </scenes>
+    <resources>
+        <namedColor name="SettingsBackground">
+            <color red="0.0039215686274509803" green="0.50196078431372548" blue="0.51764705882352946" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
+        <namedColor name="SettingsHighlighted">
+            <color red="0.0080000003799796104" green="0.32199999690055847" blue="0.40400001406669617" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
+        <namedColor name="Text">
+            <color red="1" green="1" blue="1" alpha="0.75" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
+    </resources>
+</document>

AltStore/Operations/Patch App/PatchAppOperation.swift

@@ -0,0 +1,242 @@
+//
+//  PatchAppOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 10/13/21.
+//  Copyright © 2021 Riley Testut. All rights reserved.
+//
+
+import UIKit
+import Combine
+import AppleArchive
+import System
+
+import AltStoreCore
+import AltSign
+import Roxas
+
+@available(iOS 14, *)
+protocol PatchAppContext
+{
+    var bundleIdentifier: String { get }
+    var temporaryDirectory: URL { get }
+    
+    var resignedApp: ALTApplication? { get }
+    var error: Error? { get }
+}
+
+enum PatchAppError: LocalizedError
+{
+    case unsupportedOperatingSystemVersion(OperatingSystemVersion)
+    
+    var errorDescription: String? {
+        switch self
+        {
+        case .unsupportedOperatingSystemVersion(let osVersion):
+            var osVersionString = "\(osVersion.majorVersion).\(osVersion.minorVersion)"
+            if osVersion.patchVersion != 0
+            {
+                osVersionString += ".\(osVersion.patchVersion)"
+            }
+            
+            let errorDescription = String(format: NSLocalizedString("The OTA download URL for iOS %@ could not be determined.", comment: ""), osVersionString)
+            return errorDescription
+        }
+    }
+}
+
+private struct OTAUpdate
+{
+    var url: URL
+    var archivePath: String
+}
+
+@available(iOS 14, *)
+class PatchAppOperation: ResultOperation<Void>
+{
+    let context: PatchAppContext
+    
+    var progressHandler: ((Progress, String) -> Void)?
+    
+    private let appPatcher = ALTAppPatcher()
+    private lazy var patchDirectory: URL = self.context.temporaryDirectory.appendingPathComponent("Patch", isDirectory: true)
+    
+    private var cancellable: AnyCancellable?
+    
+    init(context: PatchAppContext)
+    {
+        self.context = context
+        
+        super.init()
+        
+        self.progress.totalUnitCount = 100
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard let resignedApp = self.context.resignedApp else { return self.finish(.failure(OperationError.invalidParameters)) }
+        
+        self.progressHandler?(self.progress, NSLocalizedString("Downloading iOS firmware...", comment: ""))
+                
+        self.cancellable = self.fetchOTAUpdate()
+            .flatMap { self.downloadArchive(from: $0) }
+            .flatMap { self.extractSpotlightFromArchive(at: $0) }
+            .flatMap { self.patch(resignedApp, withBinaryAt: $0) }
+            .tryMap { try FileManager.default.zipAppBundle(at: $0) }
+            .tryMap { (fileURL) in
+                let app = AnyApp(name: resignedApp.name, bundleIdentifier: self.context.bundleIdentifier, url: resignedApp.fileURL)
+                
+                let destinationURL = InstalledApp.refreshedIPAURL(for: app)
+                try FileManager.default.copyItem(at: fileURL, to: destinationURL, shouldReplace: true)
+            }
+            .receive(on: RunLoop.main)
+            .sink { completion in
+                switch completion
+                {
+                case .failure(let error): self.finish(.failure(error))
+                case .finished: self.finish(.success(()))
+                }
+            } receiveValue: { _ in }
+    }
+    
+    override func cancel()
+    {
+        super.cancel()
+        
+        self.cancellable?.cancel()
+        self.cancellable = nil
+    }
+}
+
+private let ALTFragmentZipCallback: @convention(c) (UInt32) -> Void = { (percentageComplete) in
+    guard let progress = Progress.current() else { return }
+    
+    if percentageComplete == 100 && progress.completedUnitCount == 0
+    {
+        // Ignore first percentageComplete, which is always 100.
+        return
+    }
+    
+    progress.completedUnitCount = Int64(percentageComplete)
+}
+
+@available(iOS 14, *)
+private extension PatchAppOperation
+{
+    func fetchOTAUpdate() -> AnyPublisher<OTAUpdate, Error>
+    {
+        Just(()).tryMap {
+            let osVersion = ProcessInfo.processInfo.operatingSystemVersion
+            switch (osVersion.majorVersion, osVersion.minorVersion)
+            {
+            case (14, 3):
+                return OTAUpdate(url: URL(string: "https://updates.cdn-apple.com/2020WinterFCS/patches/001-87330/99E29969-F6B6-422A-B946-70DE2E2D73BE/com_apple_MobileAsset_SoftwareUpdate/67f9e42f5e57a20e0a87eaf81b69dd2a61311d3f.zip")!,
+                                   archivePath: "AssetData/payloadv2/payload.042")
+                
+            case (14, 4):
+                return OTAUpdate(url: URL(string: "https://updates.cdn-apple.com/2021WinterFCS/patches/001-98606/43AF99A1-F286-43B1-A101-F9F856EA395A/com_apple_MobileAsset_SoftwareUpdate/c4985c32c344beb7b49c61919b4e39d1fd336c90.zip")!,
+                                   archivePath: "AssetData/payloadv2/payload.042")
+                
+            case (14, 5):
+                return OTAUpdate(url: URL(string: "https://updates.cdn-apple.com/2021SpringFCS/patches/061-84483/AB525139-066E-46F8-8E85-DCE802C03BA8/com_apple_MobileAsset_SoftwareUpdate/788573ae93113881db04269acedeecabbaa643e3.zip")!,
+                                   archivePath: "AssetData/payloadv2/payload.043")
+                
+            default: throw PatchAppError.unsupportedOperatingSystemVersion(osVersion)
+            }
+        }
+        .eraseToAnyPublisher()
+    }
+    
+    func downloadArchive(from update: OTAUpdate) -> AnyPublisher<URL, Error>
+    {
+        Just(()).tryMap {
+            #if targetEnvironment(simulator)
+            throw PatchAppError.unsupportedOperatingSystemVersion(ProcessInfo.processInfo.operatingSystemVersion)
+            #else
+            
+            try FileManager.default.createDirectory(at: self.patchDirectory, withIntermediateDirectories: true, attributes: nil)
+            
+            let archiveURL = self.patchDirectory.appendingPathComponent("ota.archive")
+            try archiveURL.withUnsafeFileSystemRepresentation { archivePath in
+                guard let fz = fragmentzip_open((update.url.absoluteString as NSString).utf8String!) else {
+                    throw URLError(.cannotConnectToHost, userInfo: [NSLocalizedDescriptionKey: NSLocalizedString("The connection failed because a connection cannot be made to the host.", comment: ""),
+                                                                                NSURLErrorKey: update.url])
+                }
+                defer { fragmentzip_close(fz) }
+                
+                self.progress.becomeCurrent(withPendingUnitCount: 100)
+                defer { self.progress.resignCurrent() }
+                
+                guard fragmentzip_download_file(fz, update.archivePath, archivePath!, ALTFragmentZipCallback) == 0 else {
+                    throw URLError(.networkConnectionLost, userInfo: [NSLocalizedDescriptionKey: NSLocalizedString("The connection failed because the network connection was lost.", comment: ""),
+                                                                                NSURLErrorKey: update.url])
+                }
+            }
+            
+            print("Downloaded OTA archive.")
+            return archiveURL
+            
+            #endif
+        }
+        .mapError { ($0 as NSError).withLocalizedFailure(NSLocalizedString("Could not download OTA archive.", comment: "")) }
+        .eraseToAnyPublisher()
+    }
+    
+    func extractSpotlightFromArchive(at archiveURL: URL) -> AnyPublisher<URL, Error>
+    {
+        Just(()).tryMap {
+            #if targetEnvironment(simulator)
+            throw PatchAppError.unsupportedOperatingSystemVersion(ProcessInfo.processInfo.operatingSystemVersion)
+            #else
+            
+            let spotlightPath = "Applications/Spotlight.app/Spotlight"
+            let spotlightFileURL = self.patchDirectory.appendingPathComponent(spotlightPath)
+            
+            guard let readFileStream = ArchiveByteStream.fileStream(path: FilePath(archiveURL.path), mode: .readOnly, options: [], permissions: FilePermissions(rawValue: 0o644)),
+                  let decompressStream = ArchiveByteStream.decompressionStream(readingFrom: readFileStream),
+                  let decodeStream = ArchiveStream.decodeStream(readingFrom: decompressStream),
+                  let readStream = ArchiveStream.extractStream(extractingTo: FilePath(self.patchDirectory.path))
+            else { throw CocoaError(.fileReadCorruptFile, userInfo: [NSURLErrorKey: archiveURL]) }
+            
+            _ = try ArchiveStream.process(readingFrom: decodeStream, writingTo: readStream) { message, filePath, data in
+                guard filePath == FilePath(spotlightPath) else { return .skip }
+                return .ok
+            }
+            
+            print("Extracted Spotlight from OTA archive.")
+            return spotlightFileURL
+            
+            #endif
+        }
+        .mapError { ($0 as NSError).withLocalizedFailure(NSLocalizedString("Could not extract Spotlight from OTA archive.", comment: "")) }
+        .eraseToAnyPublisher()
+    }
+    
+    func patch(_ app: ALTApplication, withBinaryAt patchFileURL: URL) -> AnyPublisher<URL, Error>
+    {
+        Just(()).tryMap {
+            // executableURL may be nil, so use infoDictionary instead to determine executable name.
+            // guard let appName = app.bundle.executableURL?.lastPathComponent else { throw OperationError.invalidApp }
+            guard let appName = app.bundle.infoDictionary?[kCFBundleExecutableKey as String] as? String else { throw OperationError.invalidApp }
+                        
+            let temporaryAppURL = self.patchDirectory.appendingPathComponent("Patched.app", isDirectory: true)
+            try FileManager.default.copyItem(at: app.fileURL, to: temporaryAppURL)
+            
+            let appBinaryURL = temporaryAppURL.appendingPathComponent(appName, isDirectory: false)
+            try self.appPatcher.patchAppBinary(at: appBinaryURL, withBinaryAt: patchFileURL)
+            
+            print("Patched \(app.name).")
+            return temporaryAppURL
+        }
+        .mapError { ($0 as NSError).withLocalizedFailure(String(format: NSLocalizedString("Could not patch %@ placeholder.", comment: ""), app.name)) }
+        .eraseToAnyPublisher()
+    }
+}

AltStore/Operations/Patch App/PatchViewController.swift

@@ -0,0 +1,499 @@
+//
+//  PatchViewController.swift
+//  AltStore
+//
+//  Created by Riley Testut on 10/20/21.
+//  Copyright © 2021 Riley Testut. All rights reserved.
+//
+
+import UIKit
+import Combine
+
+import AltStoreCore
+import AltSign
+import Roxas
+
+@available(iOS 14.0, *)
+extension PatchViewController
+{
+    enum Step
+    {
+        case confirm
+        case install
+        case openApp
+        case patchApp
+        case reboot
+        case refresh
+        case finish
+    }
+}
+
+@available(iOS 14.0, *)
+class PatchViewController: UIViewController
+{
+    var patchApp: AnyApp?
+    var installedApp: InstalledApp?
+    
+    var completionHandler: ((Result<Void, Error>) -> Void)?
+    
+    private let context = AuthenticatedOperationContext()
+    
+    private var currentStep: Step = .confirm {
+        didSet {
+            DispatchQueue.main.async {
+                self.update()
+            }
+        }
+    }
+    
+    private var buttonHandler: (() -> Void)?
+    private var resignedApp: ALTApplication?
+    
+    private lazy var temporaryDirectory: URL = FileManager.default.uniqueTemporaryURL()
+    
+    private var didEnterBackgroundObservation: NSObjectProtocol?
+    private weak var cancellableProgress: Progress?
+    
+    @IBOutlet private var placeholderView: RSTPlaceholderView!
+    @IBOutlet private var taskDescriptionLabel: UILabel!
+    @IBOutlet private var pillButton: PillButton!
+    @IBOutlet private var cancelBarButtonItem: UIBarButtonItem!
+    @IBOutlet private var cancelButton: UIButton!
+    
+    override func viewDidLoad()
+    {
+        super.viewDidLoad()
+        
+        self.isModalInPresentation = true
+        
+        self.placeholderView.stackView.spacing = 20
+        self.placeholderView.textLabel.textColor = .white
+        
+        self.placeholderView.detailTextLabel.textAlignment = .left
+        self.placeholderView.detailTextLabel.textColor = UIColor.white.withAlphaComponent(0.6)
+        
+        self.buttonHandler = { [weak self] in
+            self?.startProcess()
+        }
+        
+        do
+        {
+            try FileManager.default.createDirectory(at: self.temporaryDirectory, withIntermediateDirectories: true, attributes: nil)
+        }
+        catch
+        {
+            print("Failed to create temporary directory:", error)
+        }
+        
+        self.update()
+    }
+    
+    override func viewWillAppear(_ animated: Bool)
+    {
+        super.viewWillAppear(animated)
+        
+        if self.installedApp != nil
+        {
+            self.refreshApp()
+        }
+    }
+}
+
+@available(iOS 14.0, *)
+private extension PatchViewController
+{
+    func update()
+    {
+        self.cancelButton.alpha = 0.0
+        
+        switch self.currentStep
+        {
+        case .confirm:
+            guard let app = self.patchApp else { break }
+            
+            if UIDevice.current.isUntetheredJailbreakRequired
+            {
+                self.placeholderView.textLabel.text = NSLocalizedString("Jailbreak Requires Untethering", comment: "")
+                self.placeholderView.detailTextLabel.text = String(format: NSLocalizedString("This jailbreak is untethered, which means %@ will never expire — even after 7 days or rebooting the device.\n\nInstalling an untethered jailbreak requires a few extra steps, but AltStore will walk you through the process.\n\nWould you like to continue? ", comment: ""), app.name)
+            }
+            else
+            {
+                self.placeholderView.textLabel.text = NSLocalizedString("Jailbreak Supports Untethering", comment: "")
+                self.placeholderView.detailTextLabel.text = String(format: NSLocalizedString("This jailbreak has an untethered version, which means %@ will never expire — even after 7 days or rebooting the device.\n\nInstalling an untethered jailbreak requires a few extra steps, but AltStore will walk you through the process.\n\nWould you like to continue? ", comment: ""), app.name)
+            }
+            
+            self.pillButton.setTitle(NSLocalizedString("Install Untethered Jailbreak", comment: ""), for: .normal)
+            
+            self.cancelButton.alpha = 1.0
+            
+        case .install:
+            guard let app = self.patchApp else { break }
+            
+            self.placeholderView.textLabel.text = String(format: NSLocalizedString("Installing %@ placeholder…", comment: ""), app.name)
+            self.placeholderView.detailTextLabel.text = NSLocalizedString("A placeholder app needs to be installed in order to prepare your device for untethering.\n\nThis may take a few moments.", comment: "")
+            
+        case .openApp:
+            self.placeholderView.textLabel.text = NSLocalizedString("Continue in App", comment: "")
+            self.placeholderView.detailTextLabel.text = NSLocalizedString("Please open the placeholder app and follow the instructions to continue jailbreaking your device.", comment: "")
+            
+            self.pillButton.setTitle(NSLocalizedString("Open Placeholder", comment: ""), for: .normal)
+            
+        case .patchApp:
+            guard let app = self.patchApp else { break }
+            
+            self.placeholderView.textLabel.text = String(format: NSLocalizedString("Patching %@ placeholder…", comment: ""), app.name)
+            self.placeholderView.detailTextLabel.text = NSLocalizedString("This will take a few moments. Please do not turn off the screen or leave the app until patching is complete.", comment: "")
+            
+            self.pillButton.setTitle(NSLocalizedString("Patch Placeholder", comment: ""), for: .normal)
+          
+        case .reboot:
+            self.placeholderView.textLabel.text = NSLocalizedString("Continue in App", comment: "")
+            self.placeholderView.detailTextLabel.text = NSLocalizedString("Please open the placeholder app and follow the instructions to continue jailbreaking your device.", comment: "")
+            
+            self.pillButton.setTitle(NSLocalizedString("Open Placeholder", comment: ""), for: .normal)
+            
+        case .refresh:
+            guard let installedApp = self.installedApp else { break }
+            
+            self.placeholderView.textLabel.text = String(format: NSLocalizedString("Finish installing %@?", comment: ""), installedApp.name)
+            self.placeholderView.detailTextLabel.text = String(format: NSLocalizedString("In order to finish jailbreaking this device, you need to install %@ then follow the instructions in the app.", comment: ""), installedApp.name)
+            
+            self.pillButton.setTitle(String(format: NSLocalizedString("Install %@", comment: ""), installedApp.name), for: .normal)
+            
+        case .finish:
+            guard let installedApp = self.installedApp else { break }
+            
+            self.placeholderView.textLabel.text = String(format: NSLocalizedString("Finish in %@", comment: ""), installedApp.name)
+            self.placeholderView.detailTextLabel.text = String(format: NSLocalizedString("Follow the instructions in %@ to finish jailbreaking this device.", comment: ""), installedApp.name)
+            
+            self.pillButton.setTitle(String(format: NSLocalizedString("Open %@", comment: ""), installedApp.name), for: .normal)
+        }
+    }
+    
+    func present(_ error: Error, title: String)
+    {
+        DispatchQueue.main.async {
+            let nsError = error as NSError
+            
+            let alertController = UIAlertController(title: nsError.localizedFailure ?? title, message: error.localizedDescription, preferredStyle: .alert)
+            alertController.addAction(.ok)
+            self.present(alertController, animated: true, completion: nil)
+            
+            self.setProgress(nil, description: nil)
+        }
+    }
+    
+    func setProgress(_ progress: Progress?, description: String?)
+    {
+        DispatchQueue.main.async {
+            self.pillButton.progress = progress
+            self.taskDescriptionLabel.text = description ?? " " // Use non-empty string to prevent label resizing itself.
+        }
+    }
+    
+    func finish(with result: Result<Void, Error>)
+    {
+        do
+        {
+            try FileManager.default.removeItem(at: self.temporaryDirectory)
+        }
+        catch
+        {
+            print("Failed to remove temporary directory:", error)
+        }
+        
+        if let observation = self.didEnterBackgroundObservation
+        {
+            NotificationCenter.default.removeObserver(observation)
+        }
+        
+        self.completionHandler?(result)
+        self.completionHandler = nil
+    }
+}
+
+@available(iOS 14.0, *)
+private extension PatchViewController
+{
+    @IBAction func performButtonAction()
+    {
+        self.buttonHandler?()
+    }
+    
+    @IBAction func cancel()
+    {
+        self.finish(with: .success(()))
+        
+        self.cancellableProgress?.cancel()
+    }
+    
+    @IBAction func installRegularJailbreak()
+    {
+        guard let app = self.patchApp else { return }
+        
+        let title: String
+        let message: String
+        
+        if UIDevice.current.isUntetheredJailbreakRequired
+        {
+            title = NSLocalizedString("Untethering Required", comment: "")
+            message = String(format: NSLocalizedString("%@ can not jailbreak this device unless you untether it first. Are you sure you want to install without untethering?", comment: ""), app.name)
+        }
+        else
+        {
+            title = NSLocalizedString("Untethering Recommended", comment: "")
+            message = String(format: NSLocalizedString("Untethering this jailbreak will prevent %@ from expiring, even after 7 days or rebooting the device. Are you sure you want to install without untethering?", comment: ""), app.name)
+        }
+        
+        let alertController = UIAlertController(title: title, message: message, preferredStyle: .alert)
+        alertController.addAction(UIAlertAction(title: NSLocalizedString("Install Without Untethering", comment: ""), style: .default) { _ in
+            self.finish(with: .failure(OperationError.cancelled))
+        })
+        alertController.addAction(.cancel)
+        self.present(alertController, animated: true, completion: nil)
+    }
+}
+
+@available(iOS 14.0, *)
+private extension PatchViewController
+{
+    func startProcess()
+    {
+        guard let patchApp = self.patchApp else { return }
+        
+        self.currentStep = .install
+        
+        if let progress = AppManager.shared.installationProgress(for: patchApp)
+        {
+            // Cancel pending jailbreak app installation so we can start a new one.
+            progress.cancel()
+        }
+        
+        let appURL = InstalledApp.fileURL(for: patchApp)
+        let cachedAppURL = self.temporaryDirectory.appendingPathComponent("Cached.app")
+        
+        do
+        {
+            // Make copy of original app, so we can replace the cached patch app with it later.
+            try FileManager.default.copyItem(at: appURL, to: cachedAppURL, shouldReplace: true)
+        }
+        catch
+        {
+            self.present(error, title: NSLocalizedString("Could not back up jailbreak app.", comment: ""))
+            return
+        }
+        
+        var unzippingError: Error?
+        let refreshGroup = AppManager.shared.install(patchApp, presentingViewController: self, context: self.context) { result in
+            do
+            {
+                _ = try result.get()
+                
+                if let unzippingError = unzippingError
+                {
+                    throw unzippingError
+                }
+                
+                // Replace cached patch app with original app so we can resume installing it post-reboot.
+                try FileManager.default.copyItem(at: cachedAppURL, to: appURL, shouldReplace: true)
+                
+                self.openApp()
+            }
+            catch
+            {
+                self.present(error, title: String(format: NSLocalizedString("Could not install %@ placeholder.", comment: ""), patchApp.name))
+            }
+        }
+        refreshGroup.beginInstallationHandler = { (installedApp) in
+            do
+            {
+                // Replace patch app name with correct name.
+                installedApp.name = patchApp.name
+                
+                let ipaURL = installedApp.refreshedIPAURL
+                let resignedAppURL = try FileManager.default.unzipAppBundle(at: ipaURL, toDirectory: self.temporaryDirectory)
+                
+                self.resignedApp = ALTApplication(fileURL: resignedAppURL)
+            }
+            catch
+            {
+                print("Error unzipping app bundle:", error)
+                unzippingError = error
+            }
+        }
+        self.setProgress(refreshGroup.progress, description: nil)
+        
+        self.cancellableProgress = refreshGroup.progress
+    }
+    
+    func openApp()
+    {
+        guard let patchApp = self.patchApp else { return }
+        
+        self.setProgress(nil, description: nil)
+        self.currentStep = .openApp
+        
+        // This observation is willEnterForeground because patching starts immediately upon return.
+        self.didEnterBackgroundObservation = NotificationCenter.default.addObserver(forName: UIApplication.willEnterForegroundNotification, object: nil, queue: .main) { (notification) in
+            self.didEnterBackgroundObservation.map { NotificationCenter.default.removeObserver($0) }
+            self.patchApplication()
+        }
+        
+        self.buttonHandler = { [weak self] in
+            guard let self = self else { return }
+            
+            #if !targetEnvironment(simulator)
+            
+            let openURL = InstalledApp.openAppURL(for: patchApp)
+            UIApplication.shared.open(openURL) { success in
+                guard !success else { return }
+                self.present(OperationError.openAppFailed(name: patchApp.name), title: String(format: NSLocalizedString("Could not open %@ placeholder.", comment: ""), patchApp.name))
+            }
+            
+            #endif
+        }
+    }
+    
+    func patchApplication()
+    {
+        guard let resignedApp = self.resignedApp else { return }
+        
+        self.currentStep = .patchApp
+        
+        self.buttonHandler = { [weak self] in
+            self?.patchApplication()
+        }
+        
+        let patchAppOperation = AppManager.shared.patch(resignedApp: resignedApp, presentingViewController: self, context: self.context) { result in
+            switch result
+            {
+            case .failure(let error): self.present(error, title: String(format: NSLocalizedString("Could not patch %@ placeholder.", comment: ""), resignedApp.name))
+            case .success: self.rebootDevice()
+            }
+        }
+        patchAppOperation.progressHandler = { (progress, description) in
+            self.setProgress(progress, description: description)
+        }
+        self.cancellableProgress = patchAppOperation.progress
+    }
+    
+    func rebootDevice()
+    {
+        guard let patchApp = self.patchApp else { return }
+        
+        self.setProgress(nil, description: nil)
+        self.currentStep = .reboot
+        
+        self.didEnterBackgroundObservation = NotificationCenter.default.addObserver(forName: UIApplication.didEnterBackgroundNotification, object: nil, queue: .main) { (notification) in
+            self.didEnterBackgroundObservation.map { NotificationCenter.default.removeObserver($0) }
+            
+            var patchedApps = UserDefaults.standard.patchedApps ?? []
+            if !patchedApps.contains(patchApp.bundleIdentifier)
+            {
+                patchedApps.append(patchApp.bundleIdentifier)
+                UserDefaults.standard.patchedApps = patchedApps
+            }
+            
+            self.finish(with: .success(()))
+        }
+
+        self.buttonHandler = { [weak self] in
+            guard let self = self else { return }
+            
+            #if !targetEnvironment(simulator)
+            
+            let openURL = InstalledApp.openAppURL(for: patchApp)
+            UIApplication.shared.open(openURL) { success in
+                guard !success else { return }
+                self.present(OperationError.openAppFailed(name: patchApp.name), title: String(format: NSLocalizedString("Could not open %@ placeholder.", comment: ""), patchApp.name))
+            }
+            
+            #endif
+        }
+    }
+    
+    func refreshApp()
+    {
+        guard let installedApp = self.installedApp else { return }
+        
+        self.currentStep = .refresh
+        
+        self.buttonHandler = { [weak self] in
+            guard let self = self else { return }
+            DatabaseManager.shared.persistentContainer.performBackgroundTask { context in
+                let tempApp = context.object(with: installedApp.objectID) as! InstalledApp
+                tempApp.needsResign = true
+                
+                let errorTitle = String(format: NSLocalizedString("Could not install %@.", comment: ""), tempApp.name)
+                
+                do
+                {
+                    try context.save()
+                    
+                    installedApp.managedObjectContext?.perform {
+                        // Refreshing ensures we don't attempt to patch the app again,
+                        // since that is only checked when installing a new app.
+                        let refreshGroup = AppManager.shared.refresh([installedApp], presentingViewController: self, group: nil)
+                        refreshGroup.completionHandler = { [weak refreshGroup, weak self] (results) in
+                            guard let self = self else { return }
+                            
+                            do
+                            {
+                                guard let (bundleIdentifier, result) = results.first else { throw refreshGroup?.context.error ?? OperationError.unknown }
+                                _ = try result.get()
+                                
+                                if var patchedApps = UserDefaults.standard.patchedApps, let index = patchedApps.firstIndex(of: bundleIdentifier)
+                                {
+                                    patchedApps.remove(at: index)
+                                    UserDefaults.standard.patchedApps = patchedApps
+                                }
+                                
+                                self.finish()
+                            }
+                            catch
+                            {
+                                self.present(error, title: errorTitle)
+                            }
+                        }
+                        self.setProgress(refreshGroup.progress, description: String(format: NSLocalizedString("Installing %@...", comment: ""), installedApp.name))
+                    }
+                }
+                catch
+                {
+                    self.present(error, title: errorTitle)
+                }
+            }
+        }
+    }
+    
+    func finish()
+    {
+        guard let installedApp = self.installedApp else { return }
+        
+        self.setProgress(nil, description: nil)
+        self.currentStep = .finish
+        
+        self.didEnterBackgroundObservation = NotificationCenter.default.addObserver(forName: UIApplication.didEnterBackgroundNotification, object: nil, queue: .main) { (notification) in
+            self.didEnterBackgroundObservation.map { NotificationCenter.default.removeObserver($0) }
+            self.finish(with: .success(()))
+        }
+        
+        installedApp.managedObjectContext?.perform {
+            let appName = installedApp.name
+            let openURL = installedApp.openAppURL
+            
+            self.buttonHandler = { [weak self] in
+                guard let self = self else { return }
+                
+                #if !targetEnvironment(simulator)
+                
+                UIApplication.shared.open(openURL) { success in
+                    guard !success else { return }
+                    self.present(OperationError.openAppFailed(name: appName), title: String(format: NSLocalizedString("Could not open %@.", comment: ""), appName))
+                }
+                
+                #endif
+            }
+        }
+    }
+}

AltStore/Operations/Patch App/fragmentzip.h

@@ -0,0 +1,18 @@
+//
+//  fragmentzip.h
+//  AltStore
+//
+//  Created by Riley Testut on 10/25/21.
+//  Copyright © 2021 Riley Testut. All rights reserved.
+//
+
+#ifndef fragmentzip_h
+#define fragmentzip_h
+
+typedef void fragmentzip_t;
+typedef void (*fragmentzip_process_callback_t)(unsigned int progress);
+fragmentzip_t *fragmentzip_open(const char *url);
+int fragmentzip_download_file(fragmentzip_t *info, const char *remotepath, const char *savepath, fragmentzip_process_callback_t callback);
+void fragmentzip_close(fragmentzip_t *info);
+
+#endif /* fragmentzip_h */

AltStore/Operations/RefreshAppOperation.swift

@@ -0,0 +1,120 @@
+//
+//  RefreshAppOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 2/27/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltStoreCore
+import AltSign
+import Roxas
+
+@objc(RefreshAppOperation)
+class RefreshAppOperation: ResultOperation<InstalledApp>
+{
+    let context: AppOperationContext
+    
+    // Strong reference to managedObjectContext to keep it alive until we're finished.
+    let managedObjectContext: NSManagedObjectContext
+    
+    init(context: AppOperationContext)
+    {
+        self.context = context
+        self.managedObjectContext = DatabaseManager.shared.persistentContainer.newBackgroundContext()
+        
+        super.init()
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        do
+        {
+            if let error = self.context.error
+            {
+                throw error
+            }
+            
+            guard let server = self.context.server, let profiles = self.context.provisioningProfiles else { throw OperationError.invalidParameters }
+            
+            guard let app = self.context.app else { throw OperationError.appNotFound }
+            guard let udid = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.deviceID) as? String else { throw OperationError.unknownUDID }
+            
+            ServerManager.shared.connect(to: server) { (result) in
+                switch result
+                {
+                case .failure(let error): self.finish(.failure(error))
+                case .success(let connection):
+                    DatabaseManager.shared.persistentContainer.performBackgroundTask { (context) in
+                        print("Sending refresh app request...")
+                        
+                        var activeProfiles: Set<String>?
+                        if UserDefaults.standard.activeAppsLimit != nil
+                        {
+                            // When installing these new profiles, AltServer will remove all non-active profiles to ensure we remain under limit.
+                            let activeApps = InstalledApp.fetchActiveApps(in: context)
+                            activeProfiles = Set(activeApps.flatMap { (installedApp) -> [String] in
+                                let appExtensionProfiles = installedApp.appExtensions.map { $0.resignedBundleIdentifier }
+                                return [installedApp.resignedBundleIdentifier] + appExtensionProfiles
+                            })
+                        }
+                        
+                        let request = InstallProvisioningProfilesRequest(udid: udid, provisioningProfiles: Set(profiles.values), activeProfiles: activeProfiles)
+                        connection.send(request) { (result) in
+                            print("Sent refresh app request!")
+                            
+                            switch result
+                            {
+                            case .failure(let error): self.finish(.failure(error))
+                            case .success:
+                                print("Waiting for refresh app response...")
+                                connection.receiveResponse() { (result) in
+                                    print("Receiving refresh app response:", result)
+                                    
+                                    switch result
+                                    {
+                                    case .failure(let error): self.finish(.failure(error))
+                                    case .success(.error(let response)): self.finish(.failure(response.error))
+                                        
+                                    case .success(.installProvisioningProfiles):
+                                        self.managedObjectContext.perform {
+                                            let predicate = NSPredicate(format: "%K == %@", #keyPath(InstalledApp.bundleIdentifier), app.bundleIdentifier)
+                                            guard let installedApp = InstalledApp.first(satisfying: predicate, in: self.managedObjectContext) else {
+                                                return self.finish(.failure(OperationError.appNotFound))
+                                            }
+                                            
+                                            self.progress.completedUnitCount += 1
+                                            
+                                            if let provisioningProfile = profiles[app.bundleIdentifier]
+                                            {
+                                                installedApp.update(provisioningProfile: provisioningProfile)
+                                            }
+                                            
+                                            for installedExtension in installedApp.appExtensions
+                                            {
+                                                guard let provisioningProfile = profiles[installedExtension.bundleIdentifier] else { continue }
+                                                installedExtension.update(provisioningProfile: provisioningProfile)
+                                            }
+                                            
+                                            self.finish(.success(installedApp))
+                                        }
+                                        
+                                    case .success: self.finish(.failure(ALTServerError(.unknownRequest)))
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        catch
+        {
+            self.finish(.failure(error))
+        }
+    }
+}

AltStore/Operations/RefreshGroup.swift

@@ -0,0 +1,92 @@
+//
+//  RefreshGroup.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/20/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import CoreData
+
+import AltStoreCore
+import AltSign
+
+class RefreshGroup: NSObject
+{
+    let context: AuthenticatedOperationContext
+    let progress = Progress.discreteProgress(totalUnitCount: 0)
+    
+    var completionHandler: (([String: Result<InstalledApp, Error>]) -> Void)?
+    var beginInstallationHandler: ((InstalledApp) -> Void)?
+        
+    private(set) var results = [String: Result<InstalledApp, Error>]()
+    
+    // Keep strong references to managed object contexts
+    // so they don't die out from under us.
+    private(set) var _contexts = Set<NSManagedObjectContext>()
+    
+    private var isFinished = false
+    
+    private let dispatchGroup = DispatchGroup()
+    private var operations: [Foundation.Operation] = []
+    
+    init(context: AuthenticatedOperationContext = AuthenticatedOperationContext())
+    {
+        self.context = context
+        
+        super.init()
+    }
+    
+    /// Used to keep track of which operations belong to this group.
+    /// This does _not_ add them to any operation queue.
+    func add(_ operations: [Foundation.Operation])
+    {
+        for operation in operations
+        {
+            self.dispatchGroup.enter()
+            
+            operation.completionBlock = { [weak self] in
+                self?.dispatchGroup.leave()
+            }
+        }
+        
+        if self.operations.isEmpty && !operations.isEmpty
+        {
+            self.dispatchGroup.notify(queue: .global()) { [weak self] in
+                self?.finish()
+            }
+        }
+        
+        self.operations.append(contentsOf: operations)
+    }
+    
+    func set(_ result: Result<InstalledApp, Error>, forAppWithBundleIdentifier bundleIdentifier: String)
+    {
+        self.results[bundleIdentifier] = result
+        
+        switch result
+        {
+        case .failure: break
+        case .success(let installedApp):
+            guard let context = installedApp.managedObjectContext else { break }
+            self._contexts.insert(context)
+        }
+    }
+    
+    func cancel()
+    {
+        self.operations.forEach { $0.cancel() }
+    }
+}
+
+private extension RefreshGroup
+{
+    func finish()
+    {
+        guard !self.isFinished else { return }
+        self.isFinished = true
+        
+        self.completionHandler?(self.results)
+    }
+}

AltStore/Operations/RemoveAppBackupOperation.swift

@@ -0,0 +1,77 @@
+//
+//  RemoveAppBackupOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 5/13/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+@objc(RemoveAppBackupOperation)
+class RemoveAppBackupOperation: ResultOperation<Void>
+{
+    let context: InstallAppOperationContext
+    
+    private let coordinator = NSFileCoordinator()
+    private let coordinatorQueue = OperationQueue()
+    
+    init(context: InstallAppOperationContext)
+    {
+        self.context = context
+        
+        super.init()
+        
+        self.coordinatorQueue.name = "AltStore - RemoveAppBackupOperation Queue"
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard let installedApp = self.context.installedApp else { return self.finish(.failure(OperationError.invalidParameters)) }
+        installedApp.managedObjectContext?.perform {
+            guard let backupDirectoryURL = FileManager.default.backupDirectoryURL(for: installedApp) else { return self.finish(.failure(OperationError.missingAppGroup)) }
+            
+            let intent = NSFileAccessIntent.writingIntent(with: backupDirectoryURL, options: [.forDeleting])
+            self.coordinator.coordinate(with: [intent], queue: self.coordinatorQueue) { (error) in
+                do
+                {
+                    if let error = error
+                    {
+                        throw error
+                    }
+                    
+                    try FileManager.default.removeItem(at: intent.url)
+                    
+                    self.finish(.success(()))
+                }
+                catch let error as CocoaError where error.code == CocoaError.Code.fileNoSuchFile
+                {
+                    #if DEBUG
+                    
+                    // When debugging, it's expected that app groups don't match, so ignore.
+                    self.finish(.success(()))
+                    
+                    #else
+                    
+                    print("Failed to remove app backup directory:", error)
+                    self.finish(.failure(error))
+                    
+                    #endif
+                }
+                catch
+                {
+                    print("Failed to remove app backup directory:", error)
+                    self.finish(.failure(error))
+                }
+            }
+        }
+    }
+}

AltStore/Operations/RemoveAppOperation.swift

@@ -0,0 +1,83 @@
+//
+//  RemoveAppOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 5/12/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltStoreCore
+
+@objc(RemoveAppOperation)
+class RemoveAppOperation: ResultOperation<InstalledApp>
+{
+    let context: InstallAppOperationContext
+    
+    init(context: InstallAppOperationContext)
+    {
+        self.context = context
+        
+        super.init()
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard let server = self.context.server, let installedApp = self.context.installedApp else { return self.finish(.failure(OperationError.invalidParameters)) }
+        guard let udid = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.deviceID) as? String else { return self.finish(.failure(OperationError.unknownUDID)) }
+        
+        installedApp.managedObjectContext?.perform {
+            let resignedBundleIdentifier = installedApp.resignedBundleIdentifier
+            
+            ServerManager.shared.connect(to: server) { (result) in
+                switch result
+                {
+                case .failure(let error): self.finish(.failure(error))
+                case .success(let connection):
+                    print("Sending remove app request...")
+                    
+                    let request = RemoveAppRequest(udid: udid, bundleIdentifier: resignedBundleIdentifier)
+                    connection.send(request) { (result) in
+                        print("Sent remove app request!")
+                        
+                        switch result
+                        {
+                        case .failure(let error): self.finish(.failure(error))
+                        case .success:
+                            print("Waiting for remove app response...")
+                            connection.receiveResponse() { (result) in
+                                print("Receiving remove app response:", result)
+                                
+                                switch result
+                                {
+                                case .failure(let error): self.finish(.failure(error))
+                                case .success(.error(let response)): self.finish(.failure(response.error))
+                                case .success(.removeApp):
+                                    DatabaseManager.shared.persistentContainer.performBackgroundTask { (context) in
+                                        self.progress.completedUnitCount += 1
+                                        
+                                        let installedApp = context.object(with: installedApp.objectID) as! InstalledApp
+                                        installedApp.isActive = false
+                                        self.finish(.success(installedApp))
+                                    }
+                                    
+                                case .success: self.finish(.failure(ALTServerError(.unknownResponse)))
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+

AltStore/Operations/ResignAppOperation.swift

@@ -0,0 +1,258 @@
+//
+//  ResignAppOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/7/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import Roxas
+
+import AltStoreCore
+import AltSign
+
+@objc(ResignAppOperation)
+class ResignAppOperation: ResultOperation<ALTApplication>
+{
+    let context: InstallAppOperationContext
+    
+    init(context: InstallAppOperationContext)
+    {
+        self.context = context
+        
+        super.init()
+        
+        self.progress.totalUnitCount = 3
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard
+            let app = self.context.app,
+            let profiles = self.context.provisioningProfiles,
+            let team = self.context.team,
+            let certificate = self.context.certificate
+        else { return self.finish(.failure(OperationError.invalidParameters)) }
+        
+        // Prepare app bundle
+        let prepareAppProgress = Progress.discreteProgress(totalUnitCount: 2)
+        self.progress.addChild(prepareAppProgress, withPendingUnitCount: 3)
+        
+        let prepareAppBundleProgress = self.prepareAppBundle(for: app, profiles: profiles) { (result) in
+            guard let appBundleURL = self.process(result) else { return }
+            
+            print("Resigning App:", self.context.bundleIdentifier)
+            
+            // Resign app bundle
+            let resignProgress = self.resignAppBundle(at: appBundleURL, team: team, certificate: certificate, profiles: Array(profiles.values)) { (result) in
+                guard let resignedURL = self.process(result) else { return }
+                
+                // Finish
+                do
+                {
+                    let destinationURL = InstalledApp.refreshedIPAURL(for: app)
+                    try FileManager.default.copyItem(at: resignedURL, to: destinationURL, shouldReplace: true)
+                    
+                    // Use appBundleURL since we need an app bundle, not .ipa.
+                    guard let resignedApplication = ALTApplication(fileURL: appBundleURL) else { throw OperationError.invalidApp }
+                    self.finish(.success(resignedApplication))
+                }
+                catch
+                {
+                    self.finish(.failure(error))
+                }
+            }
+            prepareAppProgress.addChild(resignProgress, withPendingUnitCount: 1)
+        }
+        prepareAppProgress.addChild(prepareAppBundleProgress, withPendingUnitCount: 1)
+    }
+    
+    func process<T>(_ result: Result<T, Error>) -> T?
+    {
+        switch result
+        {
+        case .failure(let error):
+            self.finish(.failure(error))
+            return nil
+            
+        case .success(let value):
+            guard !self.isCancelled else {
+                self.finish(.failure(OperationError.cancelled))
+                return nil
+            }
+            
+            return value
+        }
+    }
+}
+
+private extension ResignAppOperation
+{
+    func prepareAppBundle(for app: ALTApplication, profiles: [String: ALTProvisioningProfile], completionHandler: @escaping (Result<URL, Error>) -> Void) -> Progress
+    {
+        let progress = Progress.discreteProgress(totalUnitCount: 1)
+        
+        let bundleIdentifier = app.bundleIdentifier
+        let openURL = InstalledApp.openAppURL(for: app)
+        
+        let fileURL = app.fileURL
+        
+        func prepare(_ bundle: Bundle, additionalInfoDictionaryValues: [String: Any] = [:]) throws
+        {
+            guard let identifier = bundle.bundleIdentifier else { throw ALTError(.missingAppBundle) }
+            guard let profile = profiles[identifier] else { throw ALTError(.missingProvisioningProfile) }
+            guard var infoDictionary = bundle.completeInfoDictionary else { throw ALTError(.missingInfoPlist) }
+            
+            infoDictionary[kCFBundleIdentifierKey as String] = profile.bundleIdentifier
+            infoDictionary[Bundle.Info.altBundleID] = identifier
+
+            for (key, value) in additionalInfoDictionaryValues
+            {
+                infoDictionary[key] = value
+            }
+
+            if let appGroups = profile.entitlements[.appGroups] as? [String]
+            {
+                infoDictionary[Bundle.Info.appGroups] = appGroups
+
+                // To keep file providers working, remap the NSExtensionFileProviderDocumentGroup, if there is one.
+                if var extensionInfo = infoDictionary["NSExtension"] as? [String: Any],
+                    let appGroup = extensionInfo["NSExtensionFileProviderDocumentGroup"] as? String,
+                    let localAppGroup = appGroups.filter({ $0.contains(appGroup) }).min(by: { $0.count < $1.count })
+                {
+                    extensionInfo["NSExtensionFileProviderDocumentGroup"] = localAppGroup
+                    infoDictionary["NSExtension"] = extensionInfo
+                }
+            }
+            
+            // Add app-specific exported UTI so we can check later if this app (extension) is installed or not.
+            let installedAppUTI = ["UTTypeConformsTo": [],
+                                   "UTTypeDescription": "AltStore Installed App",
+                                   "UTTypeIconFiles": [],
+                                   "UTTypeIdentifier": InstalledApp.installedAppUTI(forBundleIdentifier: profile.bundleIdentifier),
+                                   "UTTypeTagSpecification": [:]] as [String : Any]
+            
+            var exportedUTIs = infoDictionary[Bundle.Info.exportedUTIs] as? [[String: Any]] ?? []
+            exportedUTIs.append(installedAppUTI)
+            infoDictionary[Bundle.Info.exportedUTIs] = exportedUTIs
+            
+            try (infoDictionary as NSDictionary).write(to: bundle.infoPlistURL)
+        }
+        
+        DispatchQueue.global().async {
+            do
+            {
+                let appBundleURL = self.context.temporaryDirectory.appendingPathComponent("App.app")
+                try FileManager.default.copyItem(at: fileURL, to: appBundleURL)
+                
+                // Become current so we can observe progress from unzipAppBundle().
+                progress.becomeCurrent(withPendingUnitCount: 1)
+                
+                guard let appBundle = Bundle(url: appBundleURL) else { throw ALTError(.missingAppBundle) }
+                guard let infoDictionary = appBundle.completeInfoDictionary else { throw ALTError(.missingInfoPlist) }
+                
+                var allURLSchemes = infoDictionary[Bundle.Info.urlTypes] as? [[String: Any]] ?? []
+                
+                let altstoreURLScheme = ["CFBundleTypeRole": "Editor",
+                                         "CFBundleURLName": bundleIdentifier,
+                                         "CFBundleURLSchemes": [openURL.scheme!]] as [String : Any]
+                allURLSchemes.append(altstoreURLScheme)
+                
+                var additionalValues: [String: Any] = [Bundle.Info.urlTypes: allURLSchemes]
+
+                if app.isAltStoreApp
+                {
+                    guard let udid = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.deviceID) as? String else { throw OperationError.unknownUDID }
+                    additionalValues[Bundle.Info.deviceID] = udid
+                    additionalValues[Bundle.Info.serverID] = UserDefaults.standard.preferredServerID
+                    
+                    if
+                        let data = Keychain.shared.signingCertificate,
+                        let signingCertificate = ALTCertificate(p12Data: data, password: nil),
+                        let encryptingPassword = Keychain.shared.signingCertificatePassword
+                    {
+                        additionalValues[Bundle.Info.certificateID] = signingCertificate.serialNumber
+                        
+                        let encryptedData = signingCertificate.encryptedP12Data(withPassword: encryptingPassword)
+                        try encryptedData?.write(to: appBundle.certificateURL, options: .atomic)
+                    }
+                    else
+                    {
+                        // The embedded certificate + certificate identifier are already in app bundle, no need to update them.
+                    }
+                }
+                else if infoDictionary.keys.contains(Bundle.Info.deviceID), let udid = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.deviceID) as? String
+                {
+                    // There is an ALTDeviceID entry, so assume the app is using AltKit and replace it with the device's UDID.
+                    additionalValues[Bundle.Info.deviceID] = udid
+                    additionalValues[Bundle.Info.serverID] = UserDefaults.standard.preferredServerID
+                }
+                
+                let iconScale = Int(UIScreen.main.scale)
+                
+                if let alternateIconURL = self.context.alternateIconURL,
+                   case let data = try Data(contentsOf: alternateIconURL),
+                   let image = UIImage(data: data),
+                   let icon = image.resizing(toFill: CGSize(width: 60 * iconScale, height: 60 * iconScale)),
+                   let iconData = icon.pngData()
+                {
+                    let iconName = "AltIcon"
+                    let iconURL = appBundleURL.appendingPathComponent(iconName + "@\(iconScale)x.png")
+                    try iconData.write(to: iconURL, options: .atomic)
+                    
+                    let iconDictionary = ["CFBundlePrimaryIcon": ["CFBundleIconFiles": [iconName]]]
+                    additionalValues["CFBundleIcons"] = iconDictionary
+                }
+                
+                // Prepare app
+                try prepare(appBundle, additionalInfoDictionaryValues: additionalValues)
+                
+                if let directory = appBundle.builtInPlugInsURL, let enumerator = FileManager.default.enumerator(at: directory, includingPropertiesForKeys: nil, options: [.skipsSubdirectoryDescendants])
+                {
+                    for case let fileURL as URL in enumerator
+                    {
+                        guard let appExtension = Bundle(url: fileURL) else { throw ALTError(.missingAppBundle) }
+                        try prepare(appExtension)
+                    }
+                }
+                
+                completionHandler(.success(appBundleURL))
+            }
+            catch
+            {
+                completionHandler(.failure(error))
+            }
+        }
+        
+        return progress
+    }
+    
+    func resignAppBundle(at fileURL: URL, team: ALTTeam, certificate: ALTCertificate, profiles: [ALTProvisioningProfile], completionHandler: @escaping (Result<URL, Error>) -> Void) -> Progress
+    {
+        let signer = ALTSigner(team: team, certificate: certificate)
+        let progress = signer.signApp(at: fileURL, provisioningProfiles: profiles) { (success, error) in
+            do
+            {
+                try Result(success, error).get()
+                
+                let ipaURL = try FileManager.default.zipAppBundle(at: fileURL)
+                completionHandler(.success(ipaURL))
+            }
+            catch
+            {
+                completionHandler(.failure(error))
+            }
+        }
+        
+        return progress
+    }
+}

AltStore/Operations/SendAppOperation.swift

@@ -0,0 +1,125 @@
+//
+//  SendAppOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 6/7/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import Network
+
+import AltStoreCore
+
+@objc(SendAppOperation)
+class SendAppOperation: ResultOperation<ServerConnection>
+{
+    let context: InstallAppOperationContext
+    
+    private let dispatchQueue = DispatchQueue(label: "com.altstore.SendAppOperation")
+    
+    private var serverConnection: ServerConnection?
+    
+    init(context: InstallAppOperationContext)
+    {
+        self.context = context
+        
+        super.init()
+        
+        self.progress.totalUnitCount = 1
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        if let error = self.context.error
+        {
+            self.finish(.failure(error))
+            return
+        }
+        
+        guard let resignedApp = self.context.resignedApp, let server = self.context.server else { return self.finish(.failure(OperationError.invalidParameters)) }
+        
+        // self.context.resignedApp.fileURL points to the app bundle, but we want the .ipa.
+        let app = AnyApp(name: resignedApp.name, bundleIdentifier: self.context.bundleIdentifier, url: resignedApp.url)
+        let fileURL = InstalledApp.refreshedIPAURL(for: app)
+        
+        // Connect to server.
+        ServerManager.shared.connect(to: server) { (result) in
+            switch result
+            {
+            case .failure(let error): self.finish(.failure(error))
+            case .success(let serverConnection):
+                self.serverConnection = serverConnection
+                
+                // Send app to server.
+                self.sendApp(at: fileURL, via: serverConnection) { (result) in
+                    switch result
+                    {
+                    case .failure(let error): self.finish(.failure(error))
+                    case .success:
+                        self.progress.completedUnitCount += 1
+                        self.finish(.success(serverConnection))
+                    }
+                }
+            }
+        }
+    }
+}
+
+private extension SendAppOperation
+{
+    func sendApp(at fileURL: URL, via connection: ServerConnection, completionHandler: @escaping (Result<Void, Error>) -> Void)
+    {
+        do
+        {
+            guard let appData = try? Data(contentsOf: fileURL) else { throw OperationError.invalidApp }
+            guard let udid = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.deviceID) as? String else { throw OperationError.unknownUDID }
+            
+            var request = PrepareAppRequest(udid: udid, contentSize: appData.count)
+            
+            if connection.server.connectionType == .local
+            {
+                // Background daemons have low memory limit (~6MB as of 13.5),
+                // so send just the file URL rather than the app data itself.
+                request.fileURL = fileURL
+            }
+            
+            connection.send(request) { (result) in
+                switch result
+                {
+                case .failure(let error): completionHandler(.failure(error))
+                case .success:
+                    
+                    if connection.server.connectionType == .local
+                    {
+                        // Sent file URL, so don't need to send any more.
+                        completionHandler(.success(()))
+                    }
+                    else
+                    {
+                        print("Sending app data (\(appData.count) bytes)...")
+                        
+                        connection.send(appData, prependSize: false) { (result) in
+                            switch result
+                            {
+                            case .failure(let error):
+                                print("Failed to send app data (\(appData.count) bytes)")
+                                completionHandler(.failure(error))
+                                
+                            case .success:
+                                print("Successfully sent app data (\(appData.count) bytes)")
+                                completionHandler(.success(()))
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        catch
+        {
+            completionHandler(.failure(error))
+        }
+    }
+}

AltStore/Operations/UpdatePatronsOperation.swift

@@ -0,0 +1,107 @@
+//
+//  UpdatePatronsOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 4/11/22.
+//  Copyright © 2022 Riley Testut. All rights reserved.
+//
+
+import Foundation
+import CoreData
+
+import AltStoreCore
+
+private extension URL
+{
+    #if STAGING
+    static let patreonInfo = URL(string: "https://f000.backblazeb2.com/file/altstore-staging/altstore/patreon.json")!
+    #else
+    static let patreonInfo = URL(string: "https://cdn.altstore.io/file/altstore/altstore/patreon.json")!
+    #endif
+}
+
+extension UpdatePatronsOperation
+{
+    private struct Response: Decodable
+    {
+        var version: Int
+        var accessToken: String
+        var refreshID: String
+    }
+}
+
+class UpdatePatronsOperation: ResultOperation<Void>
+{
+    let context: NSManagedObjectContext
+    
+    init(context: NSManagedObjectContext = DatabaseManager.shared.persistentContainer.newBackgroundContext())
+    {
+        self.context = context
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        let dataTask = URLSession.shared.dataTask(with: .patreonInfo) { (data, response, error) in
+            do
+            {
+                if let response = response as? HTTPURLResponse
+                {
+                    guard response.statusCode != 404 else {
+                        self.finish(.failure(URLError(.fileDoesNotExist, userInfo: [NSURLErrorKey: URL.patreonInfo])))
+                        return
+                    }
+                }
+                
+                guard let data = data else { throw error! }
+                
+                let response = try AltStoreCore.JSONDecoder().decode(Response.self, from: data)
+                Keychain.shared.patreonCreatorAccessToken = response.accessToken
+                
+                let previousRefreshID = UserDefaults.shared.patronsRefreshID
+                guard response.refreshID != previousRefreshID else {
+                    self.finish(.success(()))
+                    return
+                }
+                
+                PatreonAPI.shared.fetchPatrons { (result) in
+                    self.context.perform {
+                        do
+                        {
+                            let patrons = try result.get()
+                            let managedPatrons = patrons.map { ManagedPatron(patron: $0, context: self.context) }
+                            
+                            let patronIDs = Set(managedPatrons.map { $0.identifier })
+                            let nonFriendZonePredicate = NSPredicate(format: "NOT (%K IN %@)", #keyPath(ManagedPatron.identifier), patronIDs)
+                            
+                            let nonFriendZonePatrons = ManagedPatron.all(satisfying: nonFriendZonePredicate, in: self.context)
+                            for managedPatron in nonFriendZonePatrons
+                            {
+                                self.context.delete(managedPatron)
+                            }
+                            
+                            try self.context.save()
+                            
+                            UserDefaults.shared.patronsRefreshID = response.refreshID
+                            
+                            self.finish(.success(()))
+                            
+                            print("Updated Friend Zone Patrons!")
+                        }
+                        catch
+                        {
+                            self.finish(.failure(error))
+                        }
+                    }
+                }
+            }
+            catch
+            {
+                self.finish(.failure(error))
+            }
+        }
+        
+        dataTask.resume()
+    }
+}

AltStore/Operations/VerifyAppOperation.swift

@@ -0,0 +1,174 @@
+//
+//  VerifyAppOperation.swift
+//  AltStore
+//
+//  Created by Riley Testut on 5/2/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+import AltSign
+import Roxas
+
+enum VerificationError: ALTLocalizedError
+{
+    case privateEntitlements(ALTApplication, entitlements: [String: Any])
+    case mismatchedBundleIdentifiers(ALTApplication, sourceBundleID: String)
+    case iOSVersionNotSupported(ALTApplication)
+    
+    var app: ALTApplication {
+        switch self
+        {
+        case .privateEntitlements(let app, _): return app
+        case .mismatchedBundleIdentifiers(let app, _): return app
+        case .iOSVersionNotSupported(let app): return app
+        }
+    }
+    
+    var failure: String? {
+        return String(format: NSLocalizedString("“%@” could not be installed.", comment: ""), app.name)
+    }
+    
+    var failureReason: String? {
+        switch self
+        {
+        case .privateEntitlements(let app, _):
+            return String(format: NSLocalizedString("“%@” requires private permissions.", comment: ""), app.name)
+            
+        case .mismatchedBundleIdentifiers(let app, let sourceBundleID):
+            return String(format: NSLocalizedString("The bundle ID “%@” does not match the one specified by the source (“%@”).", comment: ""), app.bundleIdentifier, sourceBundleID)
+            
+        case .iOSVersionNotSupported(let app):
+            let name = app.name
+            
+            var version = "iOS \(app.minimumiOSVersion.majorVersion).\(app.minimumiOSVersion.minorVersion)"
+            if app.minimumiOSVersion.patchVersion > 0
+            {
+                version += ".\(app.minimumiOSVersion.patchVersion)"
+            }
+            
+            let localizedDescription = String(format: NSLocalizedString("%@ requires %@.", comment: ""), name, version)
+            return localizedDescription
+        }
+    }
+}
+
+@objc(VerifyAppOperation)
+class VerifyAppOperation: ResultOperation<Void>
+{
+    let context: AppOperationContext
+    var verificationHandler: ((VerificationError) -> Bool)?
+    
+    init(context: AppOperationContext)
+    {
+        self.context = context
+        
+        super.init()
+    }
+    
+    override func main()
+    {
+        super.main()
+        
+        do
+        {
+            if let error = self.context.error
+            {
+                throw error
+            }
+            
+            guard let app = self.context.app else { throw OperationError.invalidParameters }
+            
+            guard app.bundleIdentifier == self.context.bundleIdentifier else {
+                throw VerificationError.mismatchedBundleIdentifiers(app, sourceBundleID: self.context.bundleIdentifier)
+            }
+            
+            guard ProcessInfo.processInfo.isOperatingSystemAtLeast(app.minimumiOSVersion) else {
+                throw VerificationError.iOSVersionNotSupported(app)
+            }
+            
+            if #available(iOS 13.5, *)
+            {
+                // No psychic paper, so we can ignore private entitlements
+                app.hasPrivateEntitlements = false
+            }
+            else
+            {
+                // Make sure this goes last, since once user responds to alert we don't do any more app verification.
+                if let commentStart = app.entitlementsString.range(of: "<!---><!-->"), let commentEnd = app.entitlementsString.range(of: "<!-- -->")
+                {
+                    // Psychic Paper private entitlements.
+                    
+                    let entitlementsStart = app.entitlementsString.index(after: commentStart.upperBound)
+                    let rawEntitlements = String(app.entitlementsString[entitlementsStart ..< commentEnd.lowerBound])
+                    
+                    let plistTemplate = """
+                        <?xml version="1.0" encoding="UTF-8"?>
+                        <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+                        <plist version="1.0">
+                            <dict>
+                            %@
+                            </dict>
+                        </plist>
+                        """
+                    let entitlementsPlist = String(format: plistTemplate, rawEntitlements)
+                    let entitlements = try PropertyListSerialization.propertyList(from: entitlementsPlist.data(using: .utf8)!, options: [], format: nil) as! [String: Any]
+                    
+                    app.hasPrivateEntitlements = true
+                    let error = VerificationError.privateEntitlements(app, entitlements: entitlements)
+                    self.process(error) { (result) in
+                        self.finish(result.mapError { $0 as Error })
+                    }
+                    
+                    return
+                }
+                else
+                {
+                    app.hasPrivateEntitlements = false
+                }
+            }
+            
+            self.finish(.success(()))
+        }
+        catch
+        {
+            self.finish(.failure(error))
+        }
+    }
+}
+
+private extension VerifyAppOperation
+{
+    func process(_ error: VerificationError, completion: @escaping (Result<Void, VerificationError>) -> Void)
+    {
+        guard let presentingViewController = self.context.presentingViewController else { return completion(.failure(error)) }
+        
+        DispatchQueue.main.async {
+            switch error
+            {
+            case .privateEntitlements(_, let entitlements):
+                let permissions = entitlements.keys.sorted().joined(separator: "\n")
+                let message = String(format: NSLocalizedString("""
+                    You must allow access to these private permissions before continuing:
+
+                    %@
+
+                    Private permissions allow apps to do more than normally allowed by iOS, including potentially accessing sensitive private data. Make sure to only install apps from sources you trust.
+                    """, comment: ""), permissions)
+                
+                let alertController = UIAlertController(title: error.failureReason ?? error.localizedDescription, message: message, preferredStyle: .alert)
+                alertController.addAction(UIAlertAction(title: NSLocalizedString("Allow Access", comment: ""), style: .destructive) { (action) in
+                    completion(.success(()))
+                })
+                alertController.addAction(UIAlertAction(title: NSLocalizedString("Deny Access", comment: ""), style: .default, handler: { (action) in
+                    completion(.failure(error))
+                }))
+                presentingViewController.present(alertController, animated: true, completion: nil)
+                
+            case .mismatchedBundleIdentifiers: return completion(.failure(error))
+            case .iOSVersionNotSupported: return completion(.failure(error))
+            }
+        }
+    }
+}