286 lines
12 KiB
Objective-C
286 lines
12 KiB
Objective-C
//
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// FingerprintViewController.m
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// Signal
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//
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// Created by Dylan Bourgeois on 02/11/14.
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// Copyright (c) 2014 Open Whisper Systems. All rights reserved.
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//
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#import "FingerprintViewController.h"
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#import "DJWActionSheet+OWS.h"
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#import "OWSConversationSettingsTableViewController.h"
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#import "Signal-Swift.h"
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#import <SignalServiceKit/NSDate+millisecondTimeStamp.h>
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#import <SignalServiceKit/OWSFingerprint.h>
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#import <SignalServiceKit/TSInfoMessage.h>
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#import <SignalServiceKit/TSStorageManager+IdentityKeyStore.h>
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#import <SignalServiceKit/TSStorageManager+SessionStore.h>
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#import <SignalServiceKit/TSStorageManager+keyingMaterial.h>
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#import <SignalServiceKit/TSThread.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface FingerprintViewController ()
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@property (strong, nonatomic) TSStorageManager *storageManager;
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@property (nonatomic) BOOL isPresentingDialog;
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@property (strong, nonatomic) TSThread *thread;
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@property (strong, nonatomic) OWSFingerprint *fingerprint;
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@property (strong, nonatomic) NSString *contactName;
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@property (strong, nonatomic) OWSQRCodeScanningViewController *qrScanningController;
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@property (strong, nonatomic) IBOutlet UINavigationBar *modalNavigationBar;
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@property (strong, nonatomic) IBOutlet UIBarButtonItem *dismissModalButton;
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@property (strong, nonatomic) IBOutlet UIView *qrScanningView;
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@property (strong, nonatomic) IBOutlet UILabel *scanningInstructions;
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@property (strong, nonatomic) IBOutlet UIView *scanningContainer;
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@property (strong, nonatomic) IBOutlet UIView *instructionsContainer;
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@property (strong, nonatomic) IBOutlet UIView *qrContainer;
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@property (strong, nonatomic) IBOutlet UIView *privacyVerificationQRCodeFrame;
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@property (strong, nonatomic) IBOutlet UIImageView *privacyVerificationQRCode;
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@property (strong, nonatomic) IBOutlet OWSCopyableLabel *privacyVerificationFingerprint;
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@property (strong, nonatomic) IBOutlet UILabel *instructionsLabel;
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@property (strong, nonatomic) IBOutlet UIButton *scanButton;
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@end
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@implementation FingerprintViewController
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- (void)configureWithThread:(TSThread *)thread
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fingerprint:(OWSFingerprint *)fingerprint
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contactName:(NSString *)contactName
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{
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self.thread = thread;
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self.fingerprint = fingerprint;
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self.contactName = contactName;
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}
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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self.navigationItem.leftBarButtonItem = self.dismissModalButton;
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[self.modalNavigationBar pushNavigationItem:self.navigationItem animated:NO];
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// HACK for transparent navigation bar.
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[self.modalNavigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
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self.modalNavigationBar.shadowImage = [UIImage new];
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self.modalNavigationBar.translucent = YES;
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self.storageManager = [TSStorageManager sharedManager];
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// HACK to get full width preview layer
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CGRect oldFrame = self.qrScanningView.frame;
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CGRect newFrame = CGRectMake(oldFrame.origin.x,
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oldFrame.origin.y,
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self.view.frame.size.width,
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self.view.frame.size.height / 2.0f - oldFrame.origin.y);
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self.qrScanningView.frame = newFrame;
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// END HACK to get full width preview layer
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self.title = NSLocalizedString(@"PRIVACY_VERIFICATION_TITLE", @"Navbar title");
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NSString *instructionsFormat = NSLocalizedString(@"PRIVACY_VERIFICATION_INSTRUCTIONS",
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@"Paragraph(s) shown alongside keying material when verifying privacy with {{contact name}}");
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self.instructionsLabel.text = [NSString stringWithFormat:instructionsFormat, self.contactName];
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self.scanButton.titleLabel.text = NSLocalizedString(@"SCAN_CODE_ACTION",
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@"Button label presented with camera icon while verifying privacy credentials. Shows the camera interface.");
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// Safety numbers and QR Code
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self.privacyVerificationFingerprint.text = self.fingerprint.displayableText;
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self.privacyVerificationQRCode.image = self.fingerprint.image;
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// Don't antialias QRCode
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self.privacyVerificationQRCode.layer.magnificationFilter = kCAFilterNearest;
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// Add session reset action.
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UILongPressGestureRecognizer *longpressToResetSession =
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[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(didLongpressToResetSession:)];
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longpressToResetSession.minimumPressDuration = 1.0;
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[self.view addGestureRecognizer:longpressToResetSession];
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}
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- (void)viewDidLayoutSubviews
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{
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[super viewDidLayoutSubviews];
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// On iOS8, the QRCodeFrame hasn't been layed out yet (causing the QRCode to be hidden), force it here.
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[self.privacyVerificationQRCodeFrame setNeedsLayout];
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[self.privacyVerificationQRCodeFrame layoutIfNeeded];
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// Round QR Code.
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self.privacyVerificationQRCodeFrame.layer.masksToBounds = YES;
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self.privacyVerificationQRCodeFrame.layer.cornerRadius = self.privacyVerificationQRCodeFrame.frame.size.height / 2;
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}
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- (void)viewWillDisappear:(BOOL)animated
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{
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[super viewWillDisappear:YES];
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if (self.dismissDelegate) {
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[self.dismissDelegate presentedModalWasDismissed];
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}
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}
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- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(nullable id)sender
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{
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if ([segue.identifier isEqualToString:@"embedIdentityQRScanner"]) {
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OWSQRCodeScanningViewController *qrScanningController
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= (OWSQRCodeScanningViewController *)segue.destinationViewController;
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self.qrScanningController = qrScanningController;
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qrScanningController.scanDelegate = self;
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}
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}
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#pragma mark - Action
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- (IBAction)closeButtonAction:(id)sender
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{
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[self dismissViewControllerAnimated:YES completion:nil];
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}
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- (IBAction)didTouchUpInsideScanButton:(id)sender
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{
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[self showScanner];
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}
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- (IBAction)didLongpressToResetSession:(id)sender
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{
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if (!_isPresentingDialog) {
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_isPresentingDialog = YES;
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[DJWActionSheet showInView:self.view
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withTitle:NSLocalizedString(@"FINGERPRINT_SHRED_KEYMATERIAL_CONFIRMATION", @"")
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cancelButtonTitle:NSLocalizedString(@"TXT_CANCEL_TITLE", @"")
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destructiveButtonTitle:nil
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otherButtonTitles:@[ NSLocalizedString(@"FINGERPRINT_SHRED_KEYMATERIAL_BUTTON", @"") ]
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tapBlock:^(DJWActionSheet *actionSheet, NSInteger tappedButtonIndex) {
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_isPresentingDialog = NO;
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if (tappedButtonIndex == actionSheet.cancelButtonIndex) {
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DDLogDebug(@"User Cancelled");
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} else if (tappedButtonIndex == actionSheet.destructiveButtonIndex) {
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DDLogDebug(@"Destructive button tapped");
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} else {
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switch (tappedButtonIndex) {
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case 0:
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[self resetSession];
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break;
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default:
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break;
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}
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}
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}];
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}
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}
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- (void)showScanner
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{
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DDLogInfo(@"%@ Showing Scanner", self.tag);
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self.qrScanningView.hidden = NO;
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self.scanningInstructions.hidden = NO;
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[UIView animateWithDuration:0.4
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delay:0.0
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options:UIViewAnimationOptionCurveEaseInOut
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animations:^{
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self.scanningContainer.frame = self.qrContainer.frame;
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self.qrContainer.frame = self.instructionsContainer.frame;
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self.instructionsContainer.alpha = 0.0f;
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}
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completion:nil];
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[self.qrScanningController startCapture];
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}
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- (void)resetSession
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{
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DDLogInfo(@"%@ local user reset session", self.tag);
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[self.storageManager removeIdentityKeyForRecipient:self.fingerprint.theirStableId];
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[self.storageManager deleteAllSessionsForContact:self.fingerprint.theirStableId];
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[[[TSInfoMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
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inThread:self.thread
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messageType:TSInfoMessageTypeSessionDidEnd] save];
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[self dismissViewControllerAnimated:YES completion:nil];
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}
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// pragma mark - OWSQRScannerDelegate
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- (void)controller:(OWSQRCodeScanningViewController *)controller didDetectQRCodeWithData:(NSData *)data;
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{
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[self verifyCombinedFingerprintData:data];
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}
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- (void)verifyCombinedFingerprintData:(NSData *)combinedFingerprintData
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{
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NSError *error;
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if ([self.fingerprint matchesCombinedFingerprintData:combinedFingerprintData error:&error]) {
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DDLogInfo(@"%@ Successfully verified privacy.", self.tag);
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NSString *successTitle = NSLocalizedString(@"SUCCESSFUL_VERIFICATION_TITLE", nil);
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NSString *dismissText = NSLocalizedString(@"DISMISS_BUTTON_TEXT", 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, self.contactName];
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UIAlertController *successAlertController =
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[UIAlertController alertControllerWithTitle:successTitle
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message:successDescription
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preferredStyle:UIAlertControllerStyleAlert];
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UIAlertAction *dismissAction =
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[UIAlertAction actionWithTitle:dismissText
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style:UIAlertActionStyleDefault
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handler:^(UIAlertAction *_Nonnull action) {
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[self dismissViewControllerAnimated:YES completion:nil];
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}];
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[successAlertController addAction:dismissAction];
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[self presentViewController:successAlertController animated:YES completion:nil];
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} else {
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[self failVerificationWithError:error];
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}
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}
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- (void)failVerificationWithError:(NSError *)error
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{
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NSString *failureTitle = NSLocalizedString(@"FAILED_VERIFICATION_TITLE", @"alert title");
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UIAlertController *failureAlertController =
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[UIAlertController alertControllerWithTitle:failureTitle
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message:error.localizedDescription
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preferredStyle:UIAlertControllerStyleAlert];
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NSString *cancelText = NSLocalizedString(@"TXT_CANCEL_TITLE", nil);
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UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:cancelText
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style:UIAlertActionStyleCancel
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handler:^(UIAlertAction *_Nonnull action) {
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[self dismissViewControllerAnimated:YES completion:nil];
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}];
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[failureAlertController addAction:cancelAction];
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// TODO
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// NSString retryText = NSLocalizedString(@"RETRY_BUTTON_TEXT", nil);
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// UIAlertAction *retryAction = [UIAlertAction actionWithTitle:retryText style:UIAlertActionStyleDefault
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// handler:^(UIAlertAction * _Nonnull action) {
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//
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// }];
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// [failureAlertController addAction:retryAction];
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[self presentViewController:failureAlertController animated:YES completion:nil];
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DDLogWarn(@"%@ Identity verification failed with error: %@", self.tag, error);
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}
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- (void)dismissViewControllerAnimated:(BOOL)flag completion:(nullable void (^)(void))completion
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{
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self.qrScanningView.hidden = YES;
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[super dismissViewControllerAnimated:flag completion:completion];
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}
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#pragma mark - Logging
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+ (NSString *)tag
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{
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return [NSString stringWithFormat:@"[%@]", self.class];
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}
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- (NSString *)tag
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{
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return self.class.tag;
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}
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@end
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NS_ASSUME_NONNULL_END
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