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Deletes cached apps after they’ve been uninstalled from device

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This commit is contained in:
Riley Testut
2020-03-23 12:12:49 -07:00
parent 9e465f8eaa
commit 590ce5c928
3 changed files with 85 additions and 49 deletions
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110
AltStore/Managing Apps/AppManager.swift
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@@ -48,55 +48,79 @@ extension AppManager
{
func update()
{
#if targetEnvironment(simulator)
// Apps aren't ever actually installed to simulator, so just do nothing rather than delete them from database.
return
#else
let context = DatabaseManager.shared.persistentContainer.newBackgroundSavingViewContext()
let fetchRequest = InstalledApp.fetchRequest() as NSFetchRequest<InstalledApp>
fetchRequest.returnsObjectsAsFaults = false
do
{
let installedApps = try context.fetch(fetchRequest)
if UserDefaults.standard.legacySideloadedApps == nil
DatabaseManager.shared.persistentContainer.performBackgroundTask { (context) in
#if targetEnvironment(simulator)
// Apps aren't ever actually installed to simulator, so just do nothing rather than delete them from database.
#else
do
{
// First time updating apps since updating AltStore to use custom UTIs,
// so cache all existing apps temporarily to prevent us from accidentally
// deleting them due to their custom UTI not existing (yet).
let apps = installedApps.map { $0.bundleIdentifier }
UserDefaults.standard.legacySideloadedApps = apps
}
let legacySideloadedApps = Set(UserDefaults.standard.legacySideloadedApps ?? [])
for app in installedApps
{
guard app.bundleIdentifier != StoreApp.altstoreAppID else {
self.scheduleExpirationWarningLocalNotification(for: app)
continue
}
let installedApps = InstalledApp.all(in: context)
let uti = UTTypeCopyDeclaration(app.installedAppUTI as CFString)?.takeRetainedValue() as NSDictionary?
if uti == nil && !legacySideloadedApps.contains(app.bundleIdentifier)
if UserDefaults.standard.legacySideloadedApps == nil
{
// This UTI is not declared by any apps, which means this app has been deleted by the user.
// This app is also not a legacy sideloaded app, so we can assume it's fine to delete it.
context.delete(app)
// First time updating apps since updating AltStore to use custom UTIs,
// so cache all existing apps temporarily to prevent us from accidentally
// deleting them due to their custom UTI not existing (yet).
let apps = installedApps.map { $0.bundleIdentifier }
UserDefaults.standard.legacySideloadedApps = apps
}
let legacySideloadedApps = Set(UserDefaults.standard.legacySideloadedApps ?? [])
for app in installedApps
{
guard app.bundleIdentifier != StoreApp.altstoreAppID else {
self.scheduleExpirationWarningLocalNotification(for: app)
continue
}
let uti = UTTypeCopyDeclaration(app.installedAppUTI as CFString)?.takeRetainedValue() as NSDictionary?
if uti == nil && !legacySideloadedApps.contains(app.bundleIdentifier)
{
// This UTI is not declared by any apps, which means this app has been deleted by the user.
// This app is also not a legacy sideloaded app, so we can assume it's fine to delete it.
context.delete(app)
}
}
try context.save()
}
catch
{
print("Error while fetching installed apps.", error)
}
#endif
do
{
let installedAppBundleIDs = InstalledApp.all(in: context).map { $0.bundleIdentifier }
let cachedAppDirectories = try FileManager.default.contentsOfDirectory(at: InstalledApp.appsDirectoryURL,
includingPropertiesForKeys: [.isDirectoryKey, .nameKey],
options: [.skipsSubdirectoryDescendants, .skipsHiddenFiles])
for appDirectory in cachedAppDirectories
{
do
{
let resourceValues = try appDirectory.resourceValues(forKeys: [.isDirectoryKey, .nameKey])
guard let isDirectory = resourceValues.isDirectory, let bundleID = resourceValues.name else { continue }
if isDirectory && !installedAppBundleIDs.contains(bundleID) && !self.installationProgress.keys.contains(bundleID)
{
try FileManager.default.removeItem(at: appDirectory)
}
}
catch
{
print("Failed to remove cached app directory.", error)
}
}
}
try context.save()
catch
{
print("Failed to remove cached apps.", error)
}
}
catch
{
print("Error while fetching installed apps")
}
#endif
}
@discardableResult