254 lines
10 KiB
Objective-C
254 lines
10 KiB
Objective-C
//
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// Copyright (c) 2022 Open Whisper Systems. All rights reserved.
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//
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#import "FingerprintViewScanController.h"
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#import <SignalMessaging/Environment.h>
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#import <SignalMessaging/OWSContactsManager.h>
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#import <SignalServiceKit/OWSError.h>
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#import <SignalServiceKit/OWSFingerprint.h>
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#import <SignalServiceKit/OWSFingerprintBuilder.h>
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#import <SignalServiceKit/OWSIdentityManager.h>
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#import <SignalUI/SignalUI-Swift.h>
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#import <SignalUI/UIFont+OWS.h>
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#import <SignalUI/UIUtil.h>
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#import <SignalUI/UIView+SignalUI.h>
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#import <SignalUI/UIViewController+Permissions.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface FingerprintViewScanController () <QRCodeScanDelegate>
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@property (nonatomic) SignalServiceAddress *recipientAddress;
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@property (nonatomic) NSData *identityKey;
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@property (nonatomic) OWSFingerprint *fingerprint;
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@property (nonatomic) NSString *contactName;
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@property (nonatomic) QRCodeScanViewController *qrCodeScanViewController;
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@end
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#pragma mark -
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@implementation FingerprintViewScanController
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- (void)configureWithRecipientAddress:(SignalServiceAddress *)address
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{
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OWSAssertDebug(address.isValid);
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self.recipientAddress = address;
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OWSContactsManager *contactsManager = Environment.shared.contactsManager;
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self.contactName = [contactsManager displayNameForAddress:address];
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OWSRecipientIdentity *_Nullable recipientIdentity =
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[[OWSIdentityManager shared] recipientIdentityForAddress:address];
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OWSAssertDebug(recipientIdentity);
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// By capturing the identity key when we enter these views, we prevent the edge case
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// where the user verifies a key that we learned about while this view was open.
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self.identityKey = recipientIdentity.identityKey;
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OWSFingerprintBuilder *builder = [[OWSFingerprintBuilder alloc] initWithAccountManager:self.tsAccountManager
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contactsManager:contactsManager];
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self.fingerprint = [builder fingerprintWithTheirSignalAddress:address
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theirIdentityKey:recipientIdentity.identityKey];
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}
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- (void)loadView
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{
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[super loadView];
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self.title = NSLocalizedString(@"SCAN_QR_CODE_VIEW_TITLE", @"Title for the 'scan QR code' view.");
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[self createViews];
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}
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- (void)createViews
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{
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self.view.backgroundColor = UIColor.blackColor;
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self.qrCodeScanViewController =
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[[QRCodeScanViewController alloc] initWithAppearance:QRCodeScanViewAppearanceNormal];
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self.qrCodeScanViewController.delegate = self;
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[self.view addSubview:self.qrCodeScanViewController.view];
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[self.qrCodeScanViewController.view autoPinWidthToSuperview];
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[self.qrCodeScanViewController.view autoPinToTopLayoutGuideOfViewController:self withInset:0];
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[self addChildViewController:self.qrCodeScanViewController];
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UIView *footer = [UIView new];
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footer.backgroundColor = [UIColor colorWithWhite:0.25f alpha:1.f];
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[self.view addSubview:footer];
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[footer autoPinWidthToSuperview];
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[footer autoPinEdgeToSuperviewEdge:ALEdgeBottom];
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[footer autoPinEdge:ALEdgeTop toEdge:ALEdgeBottom ofView:self.qrCodeScanViewController.view];
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UILabel *cameraInstructionLabel = [UILabel new];
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cameraInstructionLabel.text
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= NSLocalizedString(@"SCAN_CODE_INSTRUCTIONS", @"label presented once scanning (camera) view is visible.");
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cameraInstructionLabel.font = [UIFont ows_regularFontWithSize:ScaleFromIPhone5To7Plus(14.f, 18.f)];
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cameraInstructionLabel.textColor = [UIColor whiteColor];
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cameraInstructionLabel.textAlignment = NSTextAlignmentCenter;
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cameraInstructionLabel.numberOfLines = 0;
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cameraInstructionLabel.lineBreakMode = NSLineBreakByWordWrapping;
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[footer addSubview:cameraInstructionLabel];
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[cameraInstructionLabel autoPinWidthToSuperviewWithMargin:ScaleFromIPhone5To7Plus(16.f, 30.f)];
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CGFloat instructionsVMargin = ScaleFromIPhone5To7Plus(10.f, 20.f);
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[cameraInstructionLabel autoPinToBottomLayoutGuideOfViewController:self withInset:instructionsVMargin];
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[cameraInstructionLabel autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:instructionsVMargin];
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}
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#pragma mark - QRCodeScanDelegate
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- (void)qrCodeScanViewDismiss:(QRCodeScanViewController *)qrCodeScanViewController
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{
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OWSAssertIsOnMainThread();
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[self.navigationController popViewControllerAnimated:YES];
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}
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- (QRCodeScanOutcome)qrCodeScanViewScanned:(QRCodeScanViewController *)qrCodeScanViewController
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qrCodeData:(nullable NSData *)qrCodeData
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qrCodeString:(nullable NSString *)qrCodeString
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{
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OWSAssertIsOnMainThread();
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if (qrCodeData == nil) {
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// Only accept QR codes with a valid data (not string) payload.
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return QRCodeScanOutcomeContinueScanning;
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}
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[self verifyCombinedFingerprintData:qrCodeData];
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// Stop scanning even if verification failed.
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return QRCodeScanOutcomeStopScanning;
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}
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- (void)verifyCombinedFingerprintData:(NSData *)combinedFingerprintData
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{
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OWSAssertIsOnMainThread();
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NSError *error;
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if ([self.fingerprint matchesLogicalFingerprintsData:combinedFingerprintData error:&error]) {
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[self showVerificationSucceeded];
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} else {
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[self showVerificationFailedWithError:error];
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}
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}
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- (void)showVerificationSucceeded
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{
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OWSAssertIsOnMainThread();
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[self.class showVerificationSucceeded:self
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identityKey:self.identityKey
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recipientAddress:self.recipientAddress
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contactName:self.contactName
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tag:self.logTag];
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}
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- (void)showVerificationFailedWithError:(NSError *)error
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{
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OWSAssertIsOnMainThread();
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[self.class showVerificationFailedWithError:error
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viewController:self
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retryBlock:^{ [self.qrCodeScanViewController tryToStartScanning]; }
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cancelBlock:^{ [self.navigationController popViewControllerAnimated:YES]; }
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tag:self.logTag];
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}
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+ (void)showVerificationSucceeded:(UIViewController *)viewController
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identityKey:(NSData *)identityKey
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recipientAddress:(SignalServiceAddress *)address
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contactName:(NSString *)contactName
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tag:(NSString *)tag
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{
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OWSAssertIsOnMainThread();
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OWSAssertDebug(viewController);
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OWSAssertDebug(identityKey.length > 0);
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OWSAssertDebug(address.isValid);
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OWSAssertDebug(contactName.length > 0);
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OWSAssertDebug(tag.length > 0);
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OWSLogInfo(@"%@ Successfully verified safety numbers.", tag);
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NSString *successTitle = NSLocalizedString(@"SUCCESSFUL_VERIFICATION_TITLE", nil);
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NSString *descriptionFormat = NSLocalizedString(
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@"SUCCESSFUL_VERIFICATION_DESCRIPTION", @"Alert body after verifying privacy with {{other user's name}}");
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NSString *successDescription = [NSString stringWithFormat:descriptionFormat, contactName];
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ActionSheetController *alert = [[ActionSheetController alloc] initWithTitle:successTitle
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message:successDescription];
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[alert addAction:[[ActionSheetAction alloc]
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initWithTitle:NSLocalizedString(@"FINGERPRINT_SCAN_VERIFY_BUTTON",
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@"Button that marks user as verified after a successful fingerprint scan.")
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style:ActionSheetActionStyleDefault
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handler:^(ActionSheetAction *action) {
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[OWSIdentityManager.shared setVerificationState:OWSVerificationStateVerified
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identityKey:identityKey
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address:address
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isUserInitiatedChange:YES];
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[viewController dismissViewControllerAnimated:true completion:nil];
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}]];
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ActionSheetAction *dismissAction =
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[[ActionSheetAction alloc] initWithTitle:CommonStrings.dismissButton
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style:ActionSheetActionStyleDefault
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handler:^(ActionSheetAction *action) {
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[viewController dismissViewControllerAnimated:true completion:nil];
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}];
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[alert addAction:dismissAction];
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[viewController presentActionSheet:alert];
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}
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+ (void)showVerificationFailedWithError:(NSError *)error
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viewController:(UIViewController *)viewController
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retryBlock:(void (^_Nullable)(void))retryBlock
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cancelBlock:(void (^_Nonnull)(void))cancelBlock
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tag:(NSString *)tag
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{
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OWSAssertDebug(viewController);
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OWSAssertDebug(cancelBlock);
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OWSAssertDebug(tag.length > 0);
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OWSLogInfo(@"%@ Failed to verify safety numbers.", tag);
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NSString *_Nullable failureTitle;
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if (error.code != OWSErrorCodeUserError) {
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failureTitle = NSLocalizedString(@"FAILED_VERIFICATION_TITLE", @"alert title");
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} // else no title. We don't want to show a big scary "VERIFICATION FAILED" when it's just user error.
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ActionSheetController *alert = [[ActionSheetController alloc] initWithTitle:failureTitle
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message:error.userErrorDescription];
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if (retryBlock) {
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[alert addAction:[[ActionSheetAction alloc] initWithTitle:[CommonStrings retryButton]
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style:ActionSheetActionStyleDefault
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handler:^(ActionSheetAction *action) {
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retryBlock();
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}]];
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}
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[alert addAction:[OWSActionSheets cancelAction]];
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[viewController presentActionSheet:alert];
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OWSLogWarn(@"%@ Identity verification failed with error: %@", tag, error);
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}
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- (void)dismissViewControllerAnimated:(BOOL)animated completion:(nullable void (^)(void))completion
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{
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self.qrCodeScanViewController.view.hidden = YES;
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[super dismissViewControllerAnimated:animated completion:completion];
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}
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#pragma mark - Orientation
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- (UIInterfaceOrientationMask)supportedInterfaceOrientations
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{
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return UIDevice.currentDevice.isIPad ? UIInterfaceOrientationMaskAll : UIInterfaceOrientationMaskPortrait;
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}
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@end
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NS_ASSUME_NONNULL_END
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