session-ios/Signal/src/ViewControllers/FingerprintViewController.m
2017-03-31 11:58:52 -04:00

335 lines
13 KiB
Objective-C

//
// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
//
#import "FingerprintViewController.h"
#import "Environment.h"
#import "OWSConversationSettingsTableViewController.h"
#import "Signal-Swift.h"
#import "UIUtil.h"
#import "UIViewController+CameraPermissions.h"
#import <SignalServiceKit/NSDate+millisecondTimeStamp.h>
#import <SignalServiceKit/OWSError.h>
#import <SignalServiceKit/OWSFingerprint.h>
#import <SignalServiceKit/TSInfoMessage.h>
#import <SignalServiceKit/TSStorageManager+IdentityKeyStore.h>
#import <SignalServiceKit/TSStorageManager+SessionStore.h>
#import <SignalServiceKit/TSStorageManager+keyingMaterial.h>
#import <SignalServiceKit/TSThread.h>
NS_ASSUME_NONNULL_BEGIN
@interface FingerprintViewController () <OWSHighlightableLabelDelegate, OWSCompareSafetyNumbersActivityDelegate>
@property (strong, nonatomic) TSStorageManager *storageManager;
@property (strong, nonatomic) TSThread *thread;
@property (strong, nonatomic) OWSFingerprint *fingerprint;
@property (strong, nonatomic) NSString *contactName;
@property (strong, nonatomic) OWSQRCodeScanningViewController *qrScanningController;
@property (strong, nonatomic) IBOutlet UINavigationBar *modalNavigationBar;
@property (strong, nonatomic) IBOutlet UIBarButtonItem *dismissModalButton;
@property (strong, nonatomic) IBOutlet UIBarButtonItem *shareButton;
@property (strong, nonatomic) IBOutlet UIView *qrScanningView;
@property (strong, nonatomic) IBOutlet UILabel *scanningInstructions;
@property (strong, nonatomic) IBOutlet UIView *scanningContainer;
@property (strong, nonatomic) IBOutlet UIView *instructionsContainer;
@property (strong, nonatomic) IBOutlet UIView *qrContainer;
@property (strong, nonatomic) IBOutlet UIView *privacyVerificationQRCodeFrame;
@property (strong, nonatomic) IBOutlet UIImageView *privacyVerificationQRCode;
@property (strong, nonatomic) IBOutlet OWSHighlightableLabel *privacyVerificationFingerprint;
@property (strong, nonatomic) IBOutlet UILabel *instructionsLabel;
@property (strong, nonatomic) IBOutlet UIButton *scanButton;
@end
@implementation FingerprintViewController
- (void)configureWithThread:(TSThread *)thread
fingerprint:(OWSFingerprint *)fingerprint
contactName:(NSString *)contactName
{
self.thread = thread;
self.fingerprint = fingerprint;
self.contactName = contactName;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationItem.leftBarButtonItem = self.dismissModalButton;
self.navigationItem.rightBarButtonItem = self.shareButton;
[self.modalNavigationBar pushNavigationItem:self.navigationItem animated:NO];
// HACK for transparent navigation bar.
[self.modalNavigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
self.modalNavigationBar.shadowImage = [UIImage new];
self.modalNavigationBar.translucent = YES;
self.storageManager = [TSStorageManager sharedManager];
// HACK to get full width preview layer
CGRect oldFrame = self.qrScanningView.frame;
CGRect newFrame = CGRectMake(oldFrame.origin.x,
oldFrame.origin.y,
self.view.frame.size.width,
self.view.frame.size.height / 2.0f - oldFrame.origin.y);
self.qrScanningView.frame = newFrame;
// END HACK to get full width preview layer
self.title = NSLocalizedString(@"PRIVACY_VERIFICATION_TITLE", @"Navbar title");
NSString *instructionsFormat = NSLocalizedString(@"PRIVACY_VERIFICATION_INSTRUCTIONS",
@"Paragraph(s) shown alongside the safety number when verifying privacy with {{contact name}}");
self.instructionsLabel.text = [NSString stringWithFormat:instructionsFormat, self.contactName];
NSString *scanTitle = NSLocalizedString(@"SCAN_CODE_ACTION",
@"Button label presented with camera icon while verifying privacy credentials. Shows the camera interface.");
[self.scanButton setTitle:scanTitle forState:UIControlStateNormal];
self.scanningInstructions.text
= NSLocalizedString(@"SCAN_CODE_INSTRUCTIONS", @"label presented once scanning (camera) view is visible.");
// Safety numbers and QR Code
self.privacyVerificationFingerprint.text = self.fingerprint.displayableText;
self.privacyVerificationQRCode.image = self.fingerprint.image;
// Don't antialias QRCode
self.privacyVerificationQRCode.layer.magnificationFilter = kCAFilterNearest;
self.privacyVerificationFingerprint.delegate = self;
}
- (void)viewDidLayoutSubviews
{
[super viewDidLayoutSubviews];
// On iOS8, the QRCodeFrame hasn't been layed out yet (causing the QRCode to be hidden), force it here.
[self.privacyVerificationQRCodeFrame setNeedsLayout];
[self.privacyVerificationQRCodeFrame layoutIfNeeded];
// Round QR Code.
self.privacyVerificationQRCodeFrame.layer.masksToBounds = YES;
self.privacyVerificationQRCodeFrame.layer.cornerRadius = self.privacyVerificationQRCodeFrame.frame.size.height / 2;
}
- (void)viewWillAppear:(BOOL)animated
{
// In case we're returning from activity view that needed default system styles.
[UIUtil applySignalAppearence];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:YES];
if (self.dismissDelegate) {
[self.dismissDelegate presentedModalWasDismissed];
}
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(nullable id)sender
{
if ([segue.identifier isEqualToString:@"embedIdentityQRScanner"]) {
OWSQRCodeScanningViewController *qrScanningController
= (OWSQRCodeScanningViewController *)segue.destinationViewController;
self.qrScanningController = qrScanningController;
qrScanningController.scanDelegate = self;
}
}
#pragma mark - HilightableLableDelegate
- (void)didHighlightLabel:(OWSHighlightableLabel *)label completion:(nullable void (^)(void))completionHandler
{
[self showSharingActivityWithCompletion:completionHandler];
}
- (void)showSharingActivityWithCompletion:(nullable void (^)(void))completionHandler
{
DDLogDebug(@"%@ Sharing safety numbers", self.tag);
OWSCompareSafetyNumbersActivity *compareActivity = [[OWSCompareSafetyNumbersActivity alloc] initWithDelegate:self];
NSString *shareFormat = NSLocalizedString(@"SAFETY_NUMBER_SHARE_FORMAT", @"Snippet to share {{safety number}} with a friend. sent e.g. via SMS");
NSString *shareString = [NSString stringWithFormat:shareFormat, self.fingerprint.displayableText];
UIActivityViewController *activityController =
[[UIActivityViewController alloc] initWithActivityItems:@[ shareString ]
applicationActivities:@[ compareActivity ]];
activityController.completionWithItemsHandler = ^void(UIActivityType __nullable activityType, BOOL completed, NSArray * __nullable returnedItems, NSError * __nullable activityError){
if (completionHandler) {
completionHandler();
}
[UIUtil applySignalAppearence];
};
// This value was extracted by inspecting `activityType` in the activityController.completionHandler
NSString *const iCloudActivityType = @"com.apple.CloudDocsUI.AddToiCloudDrive";
activityController.excludedActivityTypes = @[
UIActivityTypePostToFacebook,
UIActivityTypePostToWeibo,
UIActivityTypeAirDrop,
UIActivityTypePostToTwitter,
iCloudActivityType // This isn't being excluded. RADAR https://openradar.appspot.com/27493621
];
[UIUtil applyDefaultSystemAppearence];
[self presentViewController:activityController animated:YES completion:nil];
}
#pragma mark - OWSCompareSafetyNumbersActivityDelegate
- (void)compareSafetyNumbersActivitySucceededWithActivity:(OWSCompareSafetyNumbersActivity *)activity
{
[self showVerificationSucceeded];
}
- (void)compareSafetyNumbersActivity:(OWSCompareSafetyNumbersActivity *)activity failedWithError:(NSError *)error
{
[self showVerificationFailedWithError:error];
}
#pragma mark - Action
- (IBAction)closeButtonAction:(id)sender
{
[self dismissViewControllerAnimated:YES completion:nil];
}
- (IBAction)didTapShareButton
{
[self showSharingActivityWithCompletion:nil];
}
- (IBAction)didTouchUpInsideScanButton:(id)sender
{
[self showScanner];
}
- (void)showScanner
{
[self ows_askForCameraPermissions:^{
// Camera stops capturing when "sharing" while in capture mode.
// Also, it's less obvious whats being "shared" at this point,
// so just disable sharing when in capture mode.
self.shareButton.enabled = NO;
DDLogInfo(@"%@ Showing Scanner", self.tag);
self.qrScanningView.hidden = NO;
self.scanningInstructions.hidden = NO;
[UIView animateWithDuration:0.4
delay:0.0
options:UIViewAnimationOptionCurveEaseInOut
animations:^{
self.scanningContainer.frame = self.qrContainer.frame;
self.qrContainer.frame = self.instructionsContainer.frame;
self.instructionsContainer.alpha = 0.0f;
}
completion:nil];
[self.qrScanningController startCapture];
}
alertActionHandler:nil];
}
#pragma mark - OWSQRScannerDelegate
- (void)controller:(OWSQRCodeScanningViewController *)controller didDetectQRCodeWithData:(NSData *)data
{
[self verifyCombinedFingerprintData:data];
}
- (void)verifyCombinedFingerprintData:(NSData *)combinedFingerprintData
{
NSError *error;
if ([self.fingerprint matchesLogicalFingerprintsData:combinedFingerprintData error:&error]) {
[self showVerificationSucceeded];
} else {
[self showVerificationFailedWithError:error];
}
}
- (void)showVerificationSucceeded
{
DDLogInfo(@"%@ Successfully verified privacy.", self.tag);
NSString *successTitle = NSLocalizedString(@"SUCCESSFUL_VERIFICATION_TITLE", nil);
NSString *dismissText = NSLocalizedString(@"DISMISS_BUTTON_TEXT", nil);
NSString *descriptionFormat = NSLocalizedString(
@"SUCCESSFUL_VERIFICATION_DESCRIPTION", @"Alert body after verifying privacy with {{other user's name}}");
NSString *successDescription = [NSString stringWithFormat:descriptionFormat, self.contactName];
UIAlertController *successAlertController =
[UIAlertController alertControllerWithTitle:successTitle
message:successDescription
preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *dismissAction =
[UIAlertAction actionWithTitle:dismissText style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){
[self dismissViewControllerAnimated:true completion:nil];
}];
[successAlertController addAction:dismissAction];
[self presentViewController:successAlertController animated:YES completion:nil];
}
- (void)showVerificationFailedWithError:(NSError *)error
{
NSString *_Nullable failureTitle;
if (error.code != OWSErrorCodeUserError) {
failureTitle = NSLocalizedString(@"FAILED_VERIFICATION_TITLE", @"alert title");
} // else no title. We don't want to show a big scary "VERIFICATION FAILED" when it's just user error.
UIAlertController *failureAlertController =
[UIAlertController alertControllerWithTitle:failureTitle
message:error.localizedDescription
preferredStyle:UIAlertControllerStyleAlert];
NSString *dismissText = NSLocalizedString(@"DISMISS_BUTTON_TEXT", nil);
UIAlertAction *dismissAction = [UIAlertAction actionWithTitle:dismissText style:UIAlertActionStyleCancel handler: ^(UIAlertAction *action){
// Restore previous layout
self.shareButton.enabled = YES;
self.qrScanningView.hidden = YES;
self.scanningInstructions.hidden = YES;
[UIView animateWithDuration:0.4
delay:0.0
options:UIViewAnimationOptionCurveEaseInOut
animations:^{
self.instructionsContainer.alpha = 1.0f;
self.qrContainer.frame = self.scanningContainer.frame;
}
completion:nil];
}];
[failureAlertController addAction:dismissAction];
// TODO
// NSString retryText = NSLocalizedString(@"RETRY_BUTTON_TEXT", nil);
// UIAlertAction *retryAction = [UIAlertAction actionWithTitle:retryText style:UIAlertActionStyleDefault
// handler:^(UIAlertAction * _Nonnull action) {
//
// }];
// [failureAlertController addAction:retryAction];
[self presentViewController:failureAlertController animated:YES completion:nil];
DDLogWarn(@"%@ Identity verification failed with error: %@", self.tag, error);
}
- (void)dismissViewControllerAnimated:(BOOL)flag completion:(nullable void (^)(void))completion
{
self.qrScanningView.hidden = YES;
[super dismissViewControllerAnimated:flag completion:completion];
}
#pragma mark - Logging
+ (NSString *)tag
{
return [NSString stringWithFormat:@"[%@]", self.class];
}
- (NSString *)tag
{
return self.class.tag;
}
@end
NS_ASSUME_NONNULL_END