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Uses UTIs to determine whether apps are installed or not

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AltStore now inserts an app-specific UTI when resigning apps, and it periodically checks whether that app has been deleted by checking whether UTTypeCopyDeclaration returns nil for the same app-specific UTI.
This commit is contained in:
Riley Testut
2019-12-17 19:17:45 -08:00
parent 748ad8588d
commit e3ea200ad5
4 changed files with 28 additions and 2 deletions
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8
AltStore/Managing Apps/AppManager.swift
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@@ -9,6 +9,7 @@
import Foundation
import UIKit
import UserNotifications
import MobileCoreServices
import AltSign
import AltKit
@@ -55,16 +56,19 @@ extension AppManager
do
{
let installedApps = try context.fetch(fetchRequest)
for app in installedApps where app.storeApp != nil
for app in installedApps
{
let uti = UTTypeCopyDeclaration(app.installedAppUTI as CFString)?.takeRetainedValue() as NSDictionary?
if app.bundleIdentifier == StoreApp.altstoreAppID
{
self.scheduleExpirationWarningLocalNotification(for: app)
}
else
{
if !UIApplication.shared.canOpenURL(app.openAppURL)
if uti == nil
{
// This UTI is not declared by any apps, which means this app has been deleted by the user.
context.delete(app)
}
}