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955 lines
40 KiB
Swift
955 lines
40 KiB
Swift
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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import UIKit
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import SignalMessaging
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import PureLayout
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import SignalServiceKit
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import PromiseKit
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@objc
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public class ShareViewController: UIViewController, ShareViewDelegate, SAEFailedViewDelegate {
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enum ShareViewControllerError: Error {
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case assertionError(description: String)
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case unsupportedMedia
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case notRegistered()
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case obsoleteShare
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}
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private var hasInitialRootViewController = false
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private var isReadyForAppExtensions = false
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private var areVersionMigrationsComplete = false
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private var progressPoller: ProgressPoller?
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var loadViewController: SAELoadViewController?
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let shareViewNavigationController: UINavigationController = UINavigationController()
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override open func loadView() {
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super.loadView()
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// This should be the first thing we do.
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let appContext = ShareAppExtensionContext(rootViewController: self)
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SetCurrentAppContext(appContext)
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DebugLogger.shared().enableTTYLogging()
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if _isDebugAssertConfiguration() {
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DebugLogger.shared().enableFileLogging()
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} else if OWSPreferences.isLoggingEnabled() {
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DebugLogger.shared().enableFileLogging()
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}
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Logger.info("\(self.logTag) \(#function)")
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_ = AppVersion()
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startupLogging()
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SetRandFunctionSeed()
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// We don't need to use DeviceSleepManager in the SAE.
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// We don't need to use applySignalAppearence in the SAE.
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if CurrentAppContext().isRunningTests {
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// TODO: Do we need to implement isRunningTests in the SAE context?
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return
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}
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// If we haven't migrated the database file to the shared data
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// directory we can't load it, and therefore can't init TSSPrimaryStorage,
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// and therefore don't want to setup most of our machinery (Environment,
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// most of the singletons, etc.). We just want to show an error view and
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// abort.
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isReadyForAppExtensions = OWSPreferences.isReadyForAppExtensions()
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guard isReadyForAppExtensions else {
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showNotReadyView()
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return
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}
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let loadViewController = SAELoadViewController(delegate: self)
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self.loadViewController = loadViewController
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// Don't display load screen immediately, in hopes that we can avoid it altogether.
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after(seconds: 0.5).then { [weak self] () -> Void in
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SwiftAssertIsOnMainThread(#function)
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guard let strongSelf = self else { return }
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guard strongSelf.presentedViewController == nil else {
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Logger.debug("\(strongSelf.logTag) setup completed quickly, no need to present load view controller.")
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return
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}
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Logger.debug("\(strongSelf.logTag) setup is slow - showing loading screen")
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strongSelf.showPrimaryViewController(loadViewController)
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}.retainUntilComplete()
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// We shouldn't set up our environment until after we've consulted isReadyForAppExtensions.
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AppSetup.setupEnvironment(callMessageHandlerBlock: {
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return NoopCallMessageHandler()
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},
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notificationsProtocolBlock: {
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return NoopNotificationsManager()
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},
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migrationCompletion: { [weak self] in
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SwiftAssertIsOnMainThread(#function)
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guard let strongSelf = self else { return }
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// performUpdateCheck must be invoked after Environment has been initialized because
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// upgrade process may depend on Environment.
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strongSelf.versionMigrationsDidComplete()
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})
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// We don't need to use "screen protection" in the SAE.
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// Ensure OWSContactsSyncing is instantiated.
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OWSContactsSyncing.sharedManager()
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NotificationCenter.default.addObserver(self,
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selector: #selector(storageIsReady),
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name: .StorageIsReady,
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object: nil)
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NotificationCenter.default.addObserver(self,
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selector: #selector(registrationStateDidChange),
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name: .RegistrationStateDidChange,
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object: nil)
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NotificationCenter.default.addObserver(self,
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selector: #selector(owsApplicationWillEnterForeground),
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name: .OWSApplicationWillEnterForeground,
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object: nil)
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NotificationCenter.default.addObserver(self,
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selector: #selector(applicationDidEnterBackground),
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name: .OWSApplicationDidEnterBackground,
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object: nil)
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Logger.info("\(self.logTag) \(#function) completed.")
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OWSAnalytics.appLaunchDidBegin()
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}
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deinit {
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Logger.info("\(self.logTag) deinit")
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NotificationCenter.default.removeObserver(self)
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// Share extensions reside in a process that may be reused between usages.
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// That isn't safe; the codebase is full of statics (e.g. singletons) which
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// we can't easily clean up.
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ExitShareExtension()
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}
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@objc
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public func applicationDidEnterBackground() {
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SwiftAssertIsOnMainThread(#function)
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Logger.info("\(self.logTag) \(#function)")
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if OWSScreenLock.shared.isScreenLockEnabled() {
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Logger.info("\(self.logTag) \(#function) dismissing.")
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self.dismiss(animated: false) { [weak self] in
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SwiftAssertIsOnMainThread(#function)
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guard let strongSelf = self else { return }
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strongSelf.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
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}
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}
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}
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private func activate() {
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SwiftAssertIsOnMainThread(#function)
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Logger.debug("\(self.logTag) \(#function)")
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// We don't need to use "screen protection" in the SAE.
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ensureRootViewController()
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// Always check prekeys after app launches, and sometimes check on app activation.
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TSPreKeyManager.checkPreKeysIfNecessary()
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// We don't need to use RTCInitializeSSL() in the SAE.
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if TSAccountManager.isRegistered() {
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// At this point, potentially lengthy DB locking migrations could be running.
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// Avoid blocking app launch by putting all further possible DB access in async block
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DispatchQueue.global().async { [weak self] in
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guard let strongSelf = self else { return }
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Logger.info("\(strongSelf.logTag) running post launch block for registered user: \(TSAccountManager.localNumber)")
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// We don't need to use OWSDisappearingMessagesJob in the SAE.
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// We don't need to use OWSFailedMessagesJob in the SAE.
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// We don't need to use OWSFailedAttachmentDownloadsJob in the SAE.
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}
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} else {
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Logger.info("\(self.logTag) running post launch block for unregistered user.")
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// We don't need to update the app icon badge number in the SAE.
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// We don't need to prod the TSSocketManager in the SAE.
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}
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if TSAccountManager.isRegistered() {
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DispatchQueue.main.async { [weak self] in
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guard let strongSelf = self else { return }
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Logger.info("\(strongSelf.logTag) running post launch block for registered user: \(TSAccountManager.localNumber)")
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// We don't need to use the TSSocketManager in the SAE.
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Environment.current().contactsManager.fetchSystemContactsOnceIfAlreadyAuthorized()
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// We don't need to fetch messages in the SAE.
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// We don't need to use OWSSyncPushTokensJob in the SAE.
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}
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}
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}
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@objc
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func versionMigrationsDidComplete() {
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SwiftAssertIsOnMainThread(#function)
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Logger.debug("\(self.logTag) \(#function)")
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areVersionMigrationsComplete = true
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checkIsAppReady()
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}
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@objc
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func storageIsReady() {
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SwiftAssertIsOnMainThread(#function)
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Logger.debug("\(self.logTag) \(#function)")
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checkIsAppReady()
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}
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@objc
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func checkIsAppReady() {
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SwiftAssertIsOnMainThread(#function)
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// App isn't ready until storage is ready AND all version migrations are complete.
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guard areVersionMigrationsComplete else {
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return
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}
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guard OWSStorage.isStorageReady() else {
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return
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}
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guard !AppReadiness.isAppReady() else {
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// Only mark the app as ready once.
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return
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}
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Logger.debug("\(self.logTag) \(#function)")
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// TODO: Once "app ready" logic is moved into AppSetup, move this line there.
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OWSProfileManager.shared().ensureLocalProfileCached()
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// Note that this does much more than set a flag;
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// it will also run all deferred blocks.
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AppReadiness.setAppIsReady()
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if TSAccountManager.isRegistered() {
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Logger.info("\(self.logTag) localNumber: \(TSAccountManager.localNumber)")
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// We don't need to use messageFetcherJob in the SAE.
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// We don't need to use SyncPushTokensJob in the SAE.
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}
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// We don't need to use DeviceSleepManager in the SAE.
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AppVersion.instance().saeLaunchDidComplete()
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Environment.current().contactsManager.loadSignalAccountsFromCache()
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Environment.current().contactsManager.startObserving()
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ensureRootViewController()
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// We don't need to use OWSMessageReceiver in the SAE.
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// We don't need to use OWSBatchMessageProcessor in the SAE.
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OWSProfileManager.shared().ensureLocalProfileCached()
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// We don't need to use OWSOrphanedDataCleaner in the SAE.
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// We don't need to fetch the local profile in the SAE
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OWSReadReceiptManager.shared().prepareCachedValues()
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}
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@objc
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func registrationStateDidChange() {
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SwiftAssertIsOnMainThread(#function)
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Logger.debug("\(self.logTag) \(#function)")
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if TSAccountManager.isRegistered() {
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Logger.info("\(self.logTag) localNumber: \(TSAccountManager.localNumber)")
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// We don't need to use ExperienceUpgradeFinder in the SAE.
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// We don't need to use OWSDisappearingMessagesJob in the SAE.
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OWSProfileManager.shared().ensureLocalProfileCached()
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}
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}
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private func ensureRootViewController() {
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SwiftAssertIsOnMainThread(#function)
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Logger.debug("\(self.logTag) \(#function)")
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guard AppReadiness.isAppReady() else {
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return
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}
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guard !hasInitialRootViewController else {
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return
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}
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hasInitialRootViewController = true
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Logger.info("\(logTag) Presenting initial root view controller")
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if OWSScreenLock.shared.isScreenLockEnabled() {
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presentScreenLock()
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} else {
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presentContentView()
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}
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}
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private func presentContentView() {
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SwiftAssertIsOnMainThread(#function)
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Logger.debug("\(self.logTag) \(#function)")
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Logger.info("\(logTag) Presenting content view")
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if !TSAccountManager.isRegistered() {
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showNotRegisteredView()
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} else if !OWSProfileManager.shared().localProfileExists() {
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// This is a rare edge case, but we want to ensure that the user
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// is has already saved their local profile key in the main app.
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showNotReadyView()
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} else {
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DispatchQueue.main.async { [weak self] in
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guard let strongSelf = self else { return }
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strongSelf.buildAttachmentAndPresentConversationPicker()
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}
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}
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// We don't use the AppUpdateNag in the SAE.
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}
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func startupLogging() {
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Logger.info("\(self.logTag) iOS Version: \(UIDevice.current.systemVersion)}")
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let locale = NSLocale.current as NSLocale
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if let localeIdentifier = locale.object(forKey: NSLocale.Key.identifier) as? String,
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localeIdentifier.count > 0 {
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Logger.info("\(self.logTag) Locale Identifier: \(localeIdentifier)")
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} else {
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owsFail("Locale Identifier: Unknown")
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}
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if let countryCode = locale.object(forKey: NSLocale.Key.countryCode) as? String,
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countryCode.count > 0 {
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Logger.info("\(self.logTag) Country Code: \(countryCode)")
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} else {
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owsFail("Country Code: Unknown")
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}
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if let languageCode = locale.object(forKey: NSLocale.Key.languageCode) as? String,
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languageCode.count > 0 {
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Logger.info("\(self.logTag) Language Code: \(languageCode)")
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} else {
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owsFail("Language Code: Unknown")
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}
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}
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// MARK: Error Views
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private func showNotReadyView() {
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SwiftAssertIsOnMainThread(#function)
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let failureTitle = NSLocalizedString("SHARE_EXTENSION_NOT_YET_MIGRATED_TITLE",
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comment: "Title indicating that the share extension cannot be used until the main app has been launched at least once.")
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let failureMessage = NSLocalizedString("SHARE_EXTENSION_NOT_YET_MIGRATED_MESSAGE",
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comment: "Message indicating that the share extension cannot be used until the main app has been launched at least once.")
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showErrorView(title: failureTitle, message: failureMessage)
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}
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private func showNotRegisteredView() {
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SwiftAssertIsOnMainThread(#function)
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let failureTitle = NSLocalizedString("SHARE_EXTENSION_NOT_REGISTERED_TITLE",
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comment: "Title indicating that the share extension cannot be used until the user has registered in the main app.")
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let failureMessage = NSLocalizedString("SHARE_EXTENSION_NOT_REGISTERED_MESSAGE",
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comment: "Message indicating that the share extension cannot be used until the user has registered in the main app.")
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showErrorView(title: failureTitle, message: failureMessage)
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}
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private func showErrorView(title: String, message: String) {
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SwiftAssertIsOnMainThread(#function)
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let viewController = SAEFailedViewController(delegate: self, title: title, message: message)
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self.showPrimaryViewController(viewController)
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}
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// MARK: View Lifecycle
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override open func viewDidLoad() {
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super.viewDidLoad()
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Logger.debug("\(self.logTag) \(#function)")
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if isReadyForAppExtensions {
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AppReadiness.runNowOrWhenAppIsReady { [weak self] in
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SwiftAssertIsOnMainThread(#function)
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guard let strongSelf = self else { return }
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strongSelf.activate()
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}
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}
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}
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override open func viewWillAppear(_ animated: Bool) {
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Logger.debug("\(self.logTag) \(#function)")
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super.viewWillAppear(animated)
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}
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override open func viewDidAppear(_ animated: Bool) {
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Logger.debug("\(self.logTag) \(#function)")
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super.viewDidAppear(animated)
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}
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override open func viewWillDisappear(_ animated: Bool) {
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Logger.debug("\(self.logTag) \(#function)")
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super.viewWillDisappear(animated)
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Logger.flush()
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}
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override open func viewDidDisappear(_ animated: Bool) {
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Logger.debug("\(self.logTag) \(#function)")
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super.viewDidDisappear(animated)
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Logger.flush()
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// Share extensions reside in a process that may be reused between usages.
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// That isn't safe; the codebase is full of statics (e.g. singletons) which
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// we can't easily clean up.
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ExitShareExtension()
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}
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@objc
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func owsApplicationWillEnterForeground() throws {
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SwiftAssertIsOnMainThread(#function)
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Logger.debug("\(self.logTag) \(#function)")
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// If a user unregisters in the main app, the SAE should shut down
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// immediately.
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guard !TSAccountManager.isRegistered() else {
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// If user is registered, do nothing.
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return
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}
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guard let firstViewController = shareViewNavigationController.viewControllers.first else {
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// If no view has been presented yet, do nothing.
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return
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}
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if let _ = firstViewController as? SAEFailedViewController {
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// If root view is an error view, do nothing.
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return
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}
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throw ShareViewControllerError.notRegistered()
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}
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// MARK: ShareViewDelegate, SAEFailedViewDelegate
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public func shareViewWasUnlocked() {
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Logger.info("\(self.logTag) \(#function)")
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presentContentView()
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}
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public func shareViewWasCompleted() {
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Logger.info("\(self.logTag) \(#function)")
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self.dismiss(animated: true) { [weak self] in
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SwiftAssertIsOnMainThread(#function)
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guard let strongSelf = self else { return }
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strongSelf.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
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}
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}
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public func shareViewWasCancelled() {
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Logger.info("\(self.logTag) \(#function)")
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self.dismiss(animated: true) { [weak self] in
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SwiftAssertIsOnMainThread(#function)
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guard let strongSelf = self else { return }
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strongSelf.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
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}
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}
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public func shareViewFailed(error: Error) {
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Logger.info("\(self.logTag) \(#function)")
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self.dismiss(animated: true) { [weak self] in
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SwiftAssertIsOnMainThread(#function)
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guard let strongSelf = self else { return }
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strongSelf.extensionContext!.cancelRequest(withError: error)
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}
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}
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// MARK: Helpers
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// This view controller is not visible to the user. It exists to intercept touches, set up the
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// extensions dependencies, and eventually present a visible view to the user.
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// For speed of presentation, we only present a single modal, and if it's already been presented
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// we swap out the contents.
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// e.g. if loading is taking a while, the user will see the load screen presented with a modal
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// animation. Next, when loading completes, the load view will be switched out for the contact
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// picker view.
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private func showPrimaryViewController(_ viewController: UIViewController) {
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SwiftAssertIsOnMainThread(#function)
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shareViewNavigationController.setViewControllers([viewController], animated: false)
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if self.presentedViewController == nil {
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Logger.debug("\(self.logTag) presenting modally: \(viewController)")
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self.present(shareViewNavigationController, animated: true)
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} else {
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Logger.debug("\(self.logTag) modal already presented. swapping modal content for: \(viewController)")
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assert(self.presentedViewController == shareViewNavigationController)
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}
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}
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private func buildAttachmentAndPresentConversationPicker() {
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SwiftAssertIsOnMainThread(#function)
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self.buildAttachment().then { [weak self] attachment -> Void in
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SwiftAssertIsOnMainThread(#function)
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guard let strongSelf = self else { return }
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strongSelf.progressPoller = nil
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strongSelf.loadViewController = nil
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let conversationPicker = SharingThreadPickerViewController(shareViewDelegate: strongSelf)
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Logger.debug("\(strongSelf.logTag) presentConversationPicker: \(conversationPicker)")
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|
conversationPicker.attachment = attachment
|
|
strongSelf.showPrimaryViewController(conversationPicker)
|
|
Logger.info("\(strongSelf.logTag) showing picker with attachment: \(attachment)")
|
|
}.catch {[weak self] error in
|
|
SwiftAssertIsOnMainThread(#function)
|
|
guard let strongSelf = self else { return }
|
|
|
|
let alertTitle = NSLocalizedString("SHARE_EXTENSION_UNABLE_TO_BUILD_ATTACHMENT_ALERT_TITLE",
|
|
comment: "Shown when trying to share content to a Signal user for the share extension. Followed by failure details.")
|
|
OWSAlerts.showAlert(title: alertTitle,
|
|
message: error.localizedDescription,
|
|
buttonTitle: CommonStrings.cancelButton) { _ in
|
|
strongSelf.shareViewWasCancelled()
|
|
}
|
|
owsFail("\(strongSelf.logTag) building attachment failed with error: \(error)")
|
|
}.retainUntilComplete()
|
|
}
|
|
|
|
private func presentScreenLock() {
|
|
SwiftAssertIsOnMainThread(#function)
|
|
|
|
let screenLockUI = SAEScreenLockViewController(shareViewDelegate: self)
|
|
Logger.debug("\(self.logTag) presentScreenLock: \(screenLockUI)")
|
|
showPrimaryViewController(screenLockUI)
|
|
Logger.info("\(self.logTag) showing screen lock")
|
|
}
|
|
|
|
private class func itemMatchesSpecificUtiType(itemProvider: NSItemProvider, utiType: String) -> Bool {
|
|
// URLs, contacts and other special items have to be detected separately.
|
|
// Many shares (e.g. pdfs) will register many UTI types and/or conform to kUTTypeData.
|
|
guard itemProvider.registeredTypeIdentifiers.count == 1 else {
|
|
return false
|
|
}
|
|
guard let firstUtiType = itemProvider.registeredTypeIdentifiers.first else {
|
|
return false
|
|
}
|
|
return firstUtiType == utiType
|
|
}
|
|
|
|
private class func isUrlItem(itemProvider: NSItemProvider) -> Bool {
|
|
return itemMatchesSpecificUtiType(itemProvider: itemProvider,
|
|
utiType: kUTTypeURL as String)
|
|
}
|
|
|
|
private class func isContactItem(itemProvider: NSItemProvider) -> Bool {
|
|
return itemMatchesSpecificUtiType(itemProvider: itemProvider,
|
|
utiType: kUTTypeContact as String)
|
|
}
|
|
|
|
private class func utiType(itemProvider: NSItemProvider) -> String? {
|
|
Logger.info("\(self.logTag) utiTypeForItem: \(itemProvider.registeredTypeIdentifiers)")
|
|
|
|
if isUrlItem(itemProvider: itemProvider) {
|
|
return kUTTypeURL as String
|
|
} else if isContactItem(itemProvider: itemProvider) {
|
|
return kUTTypeContact as String
|
|
}
|
|
|
|
// Use the first UTI that conforms to "data".
|
|
let matchingUtiType = itemProvider.registeredTypeIdentifiers.first { (utiType: String) -> Bool in
|
|
UTTypeConformsTo(utiType as CFString, kUTTypeData)
|
|
}
|
|
return matchingUtiType
|
|
}
|
|
|
|
private class func preferredItemProvider(inputItem: NSExtensionItem) -> NSItemProvider? {
|
|
guard let attachments = inputItem.attachments else {
|
|
return nil
|
|
}
|
|
|
|
// Prefer a URL provider if available
|
|
if let preferredAttachment = attachments.first(where: { (attachment: Any) -> Bool in
|
|
guard let itemProvider = attachment as? NSItemProvider else {
|
|
return false
|
|
}
|
|
return isUrlItem(itemProvider: itemProvider)
|
|
}) {
|
|
return preferredAttachment as? NSItemProvider
|
|
}
|
|
|
|
// else return whatever is available
|
|
return inputItem.attachments?.first as? NSItemProvider
|
|
}
|
|
|
|
private class func createDataSource(utiType: String, url: URL, customFileName: String?) -> DataSource? {
|
|
if utiType == (kUTTypeURL as String) {
|
|
// Share URLs as oversize text messages whose text content is the URL.
|
|
//
|
|
// NOTE: SharingThreadPickerViewController will try to unpack them
|
|
// and send them as normal text messages if possible.
|
|
let urlString = url.absoluteString
|
|
return DataSourceValue.dataSource(withOversizeText: urlString)
|
|
} else if UTTypeConformsTo(utiType as CFString, kUTTypeText) {
|
|
// Share text as oversize text messages.
|
|
//
|
|
// NOTE: SharingThreadPickerViewController will try to unpack them
|
|
// and send them as normal text messages if possible.
|
|
return DataSourcePath.dataSource(with: url)
|
|
} else {
|
|
guard let dataSource = DataSourcePath.dataSource(with: url) else {
|
|
return nil
|
|
}
|
|
|
|
if let customFileName = customFileName {
|
|
dataSource.sourceFilename = customFileName
|
|
} else {
|
|
// Ignore the filename for URLs.
|
|
dataSource.sourceFilename = url.lastPathComponent
|
|
}
|
|
return dataSource
|
|
}
|
|
}
|
|
|
|
private func buildAttachment() -> Promise<SignalAttachment> {
|
|
guard let inputItem: NSExtensionItem = self.extensionContext?.inputItems.first as? NSExtensionItem else {
|
|
let error = ShareViewControllerError.assertionError(description: "no input item")
|
|
return Promise(error: error)
|
|
}
|
|
|
|
// A single inputItem can have multiple attachments, e.g. sharing from Firefox gives
|
|
// one url attachment and another text attachment, where the the url would be https://some-news.com/articles/123-cat-stuck-in-tree
|
|
// and the text attachment would be something like "Breaking news - cat stuck in tree"
|
|
//
|
|
// FIXME: For now, we prefer the URL provider and discard the text provider, since it's more useful to share the URL than the caption
|
|
// but we *should* include both. This will be a bigger change though since our share extension is currently heavily predicated
|
|
// on one itemProvider per share.
|
|
guard let itemProvider: NSItemProvider = type(of: self).preferredItemProvider(inputItem: inputItem) else {
|
|
let error = ShareViewControllerError.assertionError(description: "No item provider in input item attachments")
|
|
return Promise(error: error)
|
|
}
|
|
Logger.info("\(self.logTag) attachment: \(itemProvider)")
|
|
|
|
// We need to be very careful about which UTI type we use.
|
|
//
|
|
// * In the case of "textual" shares (e.g. web URLs and text snippets), we want to
|
|
// coerce the UTI type to kUTTypeURL or kUTTypeText.
|
|
// * We want to treat shared files as file attachments. Therefore we do not
|
|
// want to treat file URLs like web URLs.
|
|
// * UTIs aren't very descriptive (there are far more MIME types than UTI types)
|
|
// so in the case of file attachments we try to refine the attachment type
|
|
// using the file extension.
|
|
guard let srcUtiType = ShareViewController.utiType(itemProvider: itemProvider) else {
|
|
let error = ShareViewControllerError.unsupportedMedia
|
|
return Promise(error: error)
|
|
}
|
|
Logger.debug("\(logTag) matched utiType: \(srcUtiType)")
|
|
|
|
let (promise, fulfill, reject) = Promise<(itemUrl: URL, utiType: String)>.pending()
|
|
|
|
var customFileName: String?
|
|
var isConvertibleToTextMessage = false
|
|
var isConvertibleToContactShare = false
|
|
|
|
let loadCompletion: NSItemProvider.CompletionHandler = { [weak self]
|
|
(value, error) in
|
|
|
|
guard let strongSelf = self else { return }
|
|
|
|
guard error == nil else {
|
|
reject(error!)
|
|
return
|
|
}
|
|
|
|
guard let value = value else {
|
|
let missingProviderError = ShareViewControllerError.assertionError(description: "missing item provider")
|
|
reject(missingProviderError)
|
|
return
|
|
}
|
|
|
|
Logger.info("\(strongSelf.logTag) value type: \(type(of: value))")
|
|
|
|
if let data = value as? Data {
|
|
// Although we don't support contacts _yet_, when we do we'll want to make
|
|
// sure they are shared with a reasonable filename.
|
|
if ShareViewController.itemMatchesSpecificUtiType(itemProvider: itemProvider,
|
|
utiType: kUTTypeVCard as String) {
|
|
customFileName = "Contact.vcf"
|
|
|
|
if Contact(vCardData: data) != nil {
|
|
isConvertibleToContactShare = true
|
|
} else {
|
|
Logger.error("\(strongSelf.logTag) could not parse vcard.")
|
|
let writeError = ShareViewControllerError.assertionError(description: "Could not parse vcard data.")
|
|
reject(writeError)
|
|
return
|
|
}
|
|
}
|
|
|
|
let customFileExtension = MIMETypeUtil.fileExtension(forUTIType: srcUtiType)
|
|
guard let tempFilePath = OWSFileSystem.writeData(toTemporaryFile: data, fileExtension: customFileExtension) else {
|
|
let writeError = ShareViewControllerError.assertionError(description: "Error writing item data: \(String(describing: error))")
|
|
reject(writeError)
|
|
return
|
|
}
|
|
let fileUrl = URL(fileURLWithPath: tempFilePath)
|
|
fulfill((itemUrl: fileUrl, utiType: srcUtiType))
|
|
} else if let string = value as? String {
|
|
Logger.debug("\(strongSelf.logTag) string provider: \(string)")
|
|
guard let data = string.filterStringForDisplay().data(using: String.Encoding.utf8) else {
|
|
let writeError = ShareViewControllerError.assertionError(description: "Error writing item data: \(String(describing: error))")
|
|
reject(writeError)
|
|
return
|
|
}
|
|
guard let tempFilePath = OWSFileSystem.writeData(toTemporaryFile: data, fileExtension: "txt") else {
|
|
let writeError = ShareViewControllerError.assertionError(description: "Error writing item data: \(String(describing: error))")
|
|
reject(writeError)
|
|
return
|
|
}
|
|
|
|
let fileUrl = URL(fileURLWithPath: tempFilePath)
|
|
|
|
isConvertibleToTextMessage = !itemProvider.registeredTypeIdentifiers.contains(kUTTypeFileURL as String)
|
|
|
|
if UTTypeConformsTo(srcUtiType as CFString, kUTTypeText) {
|
|
fulfill((itemUrl: fileUrl, utiType: srcUtiType))
|
|
} else {
|
|
fulfill((itemUrl: fileUrl, utiType: kUTTypeText as String))
|
|
}
|
|
} else if let url = value as? URL {
|
|
// If the share itself is a URL (e.g. a link from Safari), try to send this as a text message.
|
|
isConvertibleToTextMessage = (itemProvider.registeredTypeIdentifiers.contains(kUTTypeURL as String) &&
|
|
!itemProvider.registeredTypeIdentifiers.contains(kUTTypeFileURL as String))
|
|
if isConvertibleToTextMessage {
|
|
fulfill((itemUrl: url, utiType: kUTTypeURL as String))
|
|
} else {
|
|
fulfill((itemUrl: url, utiType: srcUtiType))
|
|
}
|
|
} else if let image = value as? UIImage {
|
|
if let data = UIImagePNGRepresentation(image) {
|
|
let tempFilePath = OWSFileSystem.temporaryFilePath(withFileExtension: "png")
|
|
do {
|
|
let url = NSURL.fileURL(withPath: tempFilePath)
|
|
try data.write(to: url)
|
|
fulfill((url, srcUtiType))
|
|
} catch {
|
|
reject(ShareViewControllerError.assertionError(description: "couldn't write UIImage: \(String(describing: error))"))
|
|
}
|
|
} else {
|
|
reject(ShareViewControllerError.assertionError(description: "couldn't convert UIImage to PNG: \(String(describing: error))"))
|
|
}
|
|
} else {
|
|
// It's unavoidable that we may sometimes receives data types that we
|
|
// don't know how to handle.
|
|
let unexpectedTypeError = ShareViewControllerError.assertionError(description: "unexpected value: \(String(describing: value))")
|
|
reject(unexpectedTypeError)
|
|
}
|
|
}
|
|
|
|
itemProvider.loadItem(forTypeIdentifier: srcUtiType, options: nil, completionHandler: loadCompletion)
|
|
|
|
return promise.then { [weak self] (itemUrl: URL, utiType: String) -> Promise<SignalAttachment> in
|
|
guard let strongSelf = self else {
|
|
let error = ShareViewControllerError.obsoleteShare
|
|
return Promise(error: error)
|
|
}
|
|
|
|
let url: URL = try {
|
|
if strongSelf.isVideoNeedingRelocation(itemProvider: itemProvider, itemUrl: itemUrl) {
|
|
return try SignalAttachment.copyToVideoTempDir(url: itemUrl)
|
|
} else {
|
|
return itemUrl
|
|
}
|
|
}()
|
|
|
|
Logger.debug("\(strongSelf.logTag) building DataSource with url: \(url), utiType: \(utiType)")
|
|
|
|
guard let dataSource = ShareViewController.createDataSource(utiType: utiType, url: url, customFileName: customFileName) else {
|
|
throw ShareViewControllerError.assertionError(description: "Unable to read attachment data")
|
|
}
|
|
|
|
// start with base utiType, but it might be something generic like "image"
|
|
var specificUTIType = utiType
|
|
if utiType == (kUTTypeURL as String) {
|
|
// Use kUTTypeURL for URLs.
|
|
} else if UTTypeConformsTo(utiType as CFString, kUTTypeText) {
|
|
// Use kUTTypeText for text.
|
|
} else if url.pathExtension.count > 0 {
|
|
// Determine a more specific utiType based on file extension
|
|
if let typeExtension = MIMETypeUtil.utiType(forFileExtension: url.pathExtension) {
|
|
Logger.debug("\(strongSelf.logTag) utiType based on extension: \(typeExtension)")
|
|
specificUTIType = typeExtension
|
|
}
|
|
}
|
|
|
|
guard !SignalAttachment.isInvalidVideo(dataSource: dataSource, dataUTI: specificUTIType) else {
|
|
// This can happen, e.g. when sharing a quicktime-video from iCloud drive.
|
|
|
|
let (promise, exportSession) = SignalAttachment.compressVideoAsMp4(dataSource: dataSource, dataUTI: specificUTIType)
|
|
|
|
// TODO: How can we move waiting for this export to the end of the share flow rather than having to do it up front?
|
|
// Ideally we'd be able to start it here, and not block the UI on conversion unless there's still work to be done
|
|
// when the user hits "send".
|
|
if let exportSession = exportSession {
|
|
let progressPoller = ProgressPoller(timeInterval: 0.1, ratioCompleteBlock: { return exportSession.progress })
|
|
strongSelf.progressPoller = progressPoller
|
|
progressPoller.startPolling()
|
|
|
|
guard let loadViewController = strongSelf.loadViewController else {
|
|
owsFail("load view controller was unexpectedly nil")
|
|
return promise
|
|
}
|
|
|
|
DispatchQueue.main.async {
|
|
loadViewController.progress = progressPoller.progress
|
|
}
|
|
}
|
|
|
|
return promise
|
|
}
|
|
|
|
let attachment = SignalAttachment.attachment(dataSource: dataSource, dataUTI: specificUTIType, imageQuality: .medium)
|
|
if isConvertibleToContactShare {
|
|
Logger.info("\(strongSelf.logTag) isConvertibleToContactShare")
|
|
attachment.isConvertibleToContactShare = isConvertibleToContactShare
|
|
} else if isConvertibleToTextMessage {
|
|
Logger.info("\(strongSelf.logTag) isConvertibleToTextMessage")
|
|
attachment.isConvertibleToTextMessage = isConvertibleToTextMessage
|
|
}
|
|
return Promise(value: attachment)
|
|
}
|
|
}
|
|
|
|
// Some host apps (e.g. iOS Photos.app) sometimes auto-converts some video formats (e.g. com.apple.quicktime-movie)
|
|
// into mp4s as part of the NSItemProvider `loadItem` API. (Some files the Photo's app doesn't auto-convert)
|
|
//
|
|
// However, when using this url to the converted item, AVFoundation operations such as generating a
|
|
// preview image and playing the url in the AVMoviePlayer fails with an unhelpful error: "The operation could not be completed"
|
|
//
|
|
// We can work around this by first copying the media into our container.
|
|
//
|
|
// I don't understand why this is, and I haven't found any relevant documentation in the NSItemProvider
|
|
// or AVFoundation docs.
|
|
//
|
|
// Notes:
|
|
//
|
|
// These operations succeed when sending a video which initially existed on disk as an mp4.
|
|
// (e.g. Alice sends a video to Bob through the main app, which ensures it's an mp4. Bob saves it, then re-shares it)
|
|
//
|
|
// I *did* verify that the size and SHA256 sum of the original url matches that of the copied url. So there
|
|
// is no difference between the contents of the file, yet one works one doesn't.
|
|
// Perhaps the AVFoundation APIs require some extra file system permssion we don't have in the
|
|
// passed through URL.
|
|
private func isVideoNeedingRelocation(itemProvider: NSItemProvider, itemUrl: URL) -> Bool {
|
|
let pathExtension = itemUrl.pathExtension
|
|
guard pathExtension.count > 0 else {
|
|
Logger.verbose("\(self.logTag) in \(#function): item URL has no file extension: \(itemUrl).")
|
|
return false
|
|
}
|
|
guard let utiTypeForURL = MIMETypeUtil.utiType(forFileExtension: pathExtension) else {
|
|
Logger.verbose("\(self.logTag) in \(#function): item has unknown UTI type: \(itemUrl).")
|
|
return false
|
|
}
|
|
Logger.verbose("\(self.logTag) utiTypeForURL: \(utiTypeForURL)")
|
|
guard utiTypeForURL == kUTTypeMPEG4 as String else {
|
|
// Either it's not a video or it was a video which was not auto-converted to mp4.
|
|
// Not affected by the issue.
|
|
return false
|
|
}
|
|
|
|
// If video file already existed on disk as an mp4, then the host app didn't need to
|
|
// apply any conversion, so no need to relocate the app.
|
|
return !itemProvider.registeredTypeIdentifiers.contains(kUTTypeMPEG4 as String)
|
|
}
|
|
}
|
|
|
|
// Exposes a Progress object, whose progress is updated by polling the return of a given block
|
|
private class ProgressPoller {
|
|
|
|
let TAG = "[ProgressPoller]"
|
|
|
|
let progress: Progress
|
|
private(set) var timer: Timer?
|
|
|
|
// Higher number offers higher ganularity
|
|
let progressTotalUnitCount: Int64 = 10000
|
|
private let timeInterval: Double
|
|
private let ratioCompleteBlock: () -> Float
|
|
|
|
init(timeInterval: TimeInterval, ratioCompleteBlock: @escaping () -> Float) {
|
|
self.timeInterval = timeInterval
|
|
self.ratioCompleteBlock = ratioCompleteBlock
|
|
|
|
self.progress = Progress()
|
|
|
|
progress.totalUnitCount = progressTotalUnitCount
|
|
progress.completedUnitCount = Int64(ratioCompleteBlock() * Float(progressTotalUnitCount))
|
|
}
|
|
|
|
func startPolling() {
|
|
guard self.timer == nil else {
|
|
owsFail("already started timer")
|
|
return
|
|
}
|
|
|
|
self.timer = WeakTimer.scheduledTimer(timeInterval: timeInterval, target: self, userInfo: nil, repeats: true) { [weak self] (timer) in
|
|
guard let strongSelf = self else {
|
|
return
|
|
}
|
|
|
|
let completedUnitCount = Int64(strongSelf.ratioCompleteBlock() * Float(strongSelf.progressTotalUnitCount))
|
|
strongSelf.progress.completedUnitCount = completedUnitCount
|
|
|
|
if completedUnitCount == strongSelf.progressTotalUnitCount {
|
|
Logger.debug("\(strongSelf.TAG) progress complete")
|
|
timer.invalidate()
|
|
}
|
|
}
|
|
}
|
|
}
|