keychain sharing

example/VKSDKTestApplication/TestViewController.m

@@ -209,7 +209,7 @@ - (void)uploadPhoto {
         [post executeWithResultBlock:^(VKResponse *postResponse) {
             NSLog(@"Result: %@", postResponse);
             NSNumber *postId = postResponse.json[@"post_id"];
-            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://vk.com/wall-60479154_%@", postId]]];
+            [[VKUtil systemApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://vk.com/wall-60479154_%@", postId]]];
         }                 errorBlock:^(NSError *error) {
             NSLog(@"Error: %@", error);
         }];
@@ -235,7 +235,7 @@ - (void)uploadPhotos {
         [post executeWithResultBlock:^(VKResponse *response) {
             NSLog(@"Result: %@", response);
             NSNumber *postId = response.json[@"post_id"];
-            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://vk.com/wall-60479154_%@", postId]]];
+            [[VKUtil systemApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://vk.com/wall-60479154_%@", postId]]];
         }                 errorBlock:^(NSError *error) {
             NSLog(@"Error: %@", error);
         }];
@@ -249,7 +249,7 @@ - (void)uploadInAlbum {
     [request executeWithResultBlock:^(VKResponse *response) {
         NSLog(@"Result: %@", response);
         VKPhoto *photo = [(VKPhotoArray *) response.parsedModel objectAtIndex:0];
-        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://vk.com/photo-60479154_%@", photo.id]]];
+        [[VKUtil systemApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://vk.com/photo-60479154_%@", photo.id]]];
     }                    errorBlock:^(NSError *error) {
         NSLog(@"Error: %@", error);
     }];

library/Source/Core/VKHTTPOperation.m

@@ -26,6 +26,7 @@
 #import "VKHTTPOperation.h"
 #import "VKRequest.h"
 #import "NSError+VKError.h"
+#import "VKUtil.h"
 
 NSString *const VKNetworkingOperationFailingURLRequestErrorKey = @"VKNetworkingOperationFailingURLRequestErrorKey";
 NSString *const VKNetworkingOperationFailingURLResponseErrorKey = @"VKNetworkingOperationFailingURLResponseErrorKey";
@@ -122,7 +123,7 @@ - (id)initWithURLRequest:(NSURLRequest *)urlRequest {
 
 - (void)dealloc {
     if (_backgroundTaskIdentifier) {
-        [[UIApplication sharedApplication] endBackgroundTask:_backgroundTaskIdentifier];
+        [[VKUtil systemApplication] endBackgroundTask:_backgroundTaskIdentifier];
         _backgroundTaskIdentifier = UIBackgroundTaskInvalid;
     }
     if (_successCallbackQueue) {
@@ -156,7 +157,7 @@ - (NSOutputStream *)outputStream {
 - (void)setShouldExecuteAsBackgroundTaskWithExpirationHandler:(void (^)(void))handler {
     [self.lock lock];
     if (!self.backgroundTaskIdentifier) {
-        UIApplication *application = [UIApplication sharedApplication];
+        UIApplication *application = [VKUtil systemApplication];
         __weak __typeof(&*self) weakSelf = self;
 
         self.backgroundTaskIdentifier = [application beginBackgroundTaskWithExpirationHandler:^{

library/Source/Utils/VKUtil.h

@@ -44,6 +44,11 @@ Breaks key=value string to dictionary
 
 + (NSString *)queryStringFromParams:(NSDictionary *)params;
 
+/**
+ * Workaround to make 'sharedApplication' still be called if compiling for AppExtensions
+ */
++ (UIApplication *)systemApplication;
+
 /**
  * Indicates that the current device system version at least conforms the argument version
  */

library/Source/Utils/VKUtil.m

@@ -59,6 +59,10 @@ + (NSNumber *)parseNumberString:(id)number {
     return value;
 }
 
++ (UIApplication *)systemApplication {
+    return [UIApplication performSelector:@selector(sharedApplication)];
+}
+
 + (UIColor *)colorWithRGB:(NSInteger)rgb {
     return [UIColor colorWithRed:((CGFloat) ((rgb & 0xFF0000) >> 16)) / 255.f green:((CGFloat) ((rgb & 0xFF00) >> 8)) / 255.f blue:((CGFloat) (rgb & 0xFF)) / 255.f alpha:1.0f];
 }

library/Source/VKAccessToken.h

@@ -76,17 +76,34 @@ Create token with existing properties
 + (instancetype)tokenWithToken:(NSString *)accessToken secret:(NSString *)secret userId:(NSString *)userId;
 
 /**
-Retrieve token from user defaults. Token must be saved to defaults with saveTokenToDefaults method
-@param defaultsKey path to file with saved token
-@return parsed token
-*/
+ Retrieve token from user defaults. Token must be saved to defaults with saveTokenToDefaults method
+
+ @param defaultsKey path to file with saved token
+ @return parsed token
+ */
 + (instancetype)savedToken:(NSString *)defaultsKey;
-
 /**
-Save token into user defaults by specified key
-@param defaultsKey key for defaults
+ Retrieve token from user defaults. Token must be saved to defaults with saveTokenToDefaults method
+
+ @param defaultsKey path to file with saved token
+ @param sharedGroupName keychain sharing group name
+ @return parsed token
 */
++ (instancetype)savedToken:(NSString *)defaultsKey sharedGroupName:(NSString *)sharedGroupName;
+
+/**
+ Save token into user defaults by specified key
+
+ @param defaultsKey key for defaults
+ */
 - (void)saveTokenToDefaults:(NSString *)defaultsKey;
+/**
+ Save token into user defaults by specified key
+
+ @param defaultsKey key for defaults
+ @param sharedGroupName keychain sharing group name
+*/
+- (void)saveTokenToDefaults:(NSString *)defaultsKey sharedGroupName:(NSString *)sharedGroupName;
 
 /// Return YES if token has expired
 - (BOOL)isExpired;
@@ -97,6 +114,13 @@ Save token into user defaults by specified key
  @param service Access token storage key name
  */
 + (void)delete:(NSString *)service;
+/**
+ Remove token from storage
+
+ @param service Access token storage key name
+ @param sharedGroupName keychain sharing group name
+ */
++ (void)delete:(NSString *)service sharedGroupName:(NSString *)sharedGroupName;
 
 @end
 

library/Source/VKAccessToken.m

@@ -168,15 +168,19 @@ - (instancetype)initWithVKAccessToken:(VKAccessToken *)token {
 }
 
 + (instancetype)savedToken:(NSString *)defaultsKey {
+    return [self savedToken:defaultsKey sharedGroupName:nil];
+}
+
++ (instancetype)savedToken:(NSString *)defaultsKey sharedGroupName:(NSString *)sharedGroupName {
     NSData *data = [[NSUserDefaults standardUserDefaults] objectForKey:defaultsKey];
     if (data) {
         VKAccessToken *token = [self tokenFromUrlString:[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]];
         [[NSUserDefaults standardUserDefaults] removeObjectForKey:defaultsKey];
         [[NSUserDefaults standardUserDefaults] synchronize];
-        [self save:defaultsKey data:token];
+        [self save:defaultsKey data:token sharedGroupName:sharedGroupName];
         return token;
     }
-    return [self load:defaultsKey];
+    return [self load:defaultsKey sharedGroupName:sharedGroupName];
 }
 
 #pragma mark - Expire
@@ -203,7 +207,11 @@ - (NSString *)accessToken {
 #pragma mark - Save / Load
 
 - (void)saveTokenToDefaults:(NSString *)defaultsKey {
-    [[self class] save:defaultsKey data:[self copy]];
+    [self saveTokenToDefaults:defaultsKey sharedGroupName:nil];
+}
+
+- (void)saveTokenToDefaults:(NSString *)defaultsKey sharedGroupName:(NSString *)sharedGroupName{
+    [[self class] save:defaultsKey data:[self copy] sharedGroupName:sharedGroupName];
 }
 
 - (id)copy {
@@ -214,29 +222,35 @@ - (id)mutableCopy {
     return [[VKAccessTokenMutable alloc] initWithVKAccessToken:self];
 }
 
-+ (NSMutableDictionary *)getKeychainQuery:(NSString *)service {
++ (NSMutableDictionary *)getKeychainQuery:(NSString *)service sharedGroupName:(NSString *)sharedGroupName {
     /**
      Simple keychain requests
      Source: http://stackoverflow.com/a/5251820/1271424
      */
 
-    return [@{(__bridge id) kSecClass : (__bridge id) kSecClassGenericPassword,
-            (__bridge id) kSecAttrService : service,
-            (__bridge id) kSecAttrAccount : service,
-            (__bridge id) kSecAttrAccessible : (__bridge id) kSecAttrAccessibleAfterFirstUnlock} mutableCopy];
+    NSMutableDictionary *queryDictionary = [NSMutableDictionary new];
+    [queryDictionary setObject:(__bridge id)kSecClassGenericPassword forKey:(__bridge id)kSecClass];
+    [queryDictionary setObject:(__bridge id)kSecAttrAccessibleAfterFirstUnlock forKey:(__bridge id)kSecAttrAccessible];
+    [queryDictionary setObject:service forKey:(__bridge id)kSecAttrService];
+    [queryDictionary setObject:service forKey:(__bridge id)kSecAttrAccount];
+    if (sharedGroupName) {
+        [queryDictionary setObject:sharedGroupName forKey:(__bridge id)kSecAttrAccessGroup];
+    }
+
+    return queryDictionary;
 }
 
-+ (void)save:(NSString *)service data:(VKAccessToken *)token {
-    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
++ (void)save:(NSString *)service data:(VKAccessToken *)token sharedGroupName:(NSString *)sharedGroupName {
+    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service sharedGroupName:sharedGroupName];
     SecItemDelete((__bridge CFDictionaryRef) keychainQuery);
     keychainQuery[(__bridge id) kSecValueData] = [NSKeyedArchiver archivedDataWithRootObject:token];
     OSStatus status = SecItemAdd((__bridge CFDictionaryRef) keychainQuery, NULL);
     NSAssert(status == errSecSuccess, @"Unable to store VKAccessToken in keychain. OSStatus: %i. Error Description: https://www.osstatus.com/search/results?platform=all&framework=all&search=%i or https://developer.apple.com/reference/security/1658642-keychain_services", status, status);
 }
 
-+ (VKAccessToken *)load:(NSString *)service {
++ (VKAccessToken *)load:(NSString *)service sharedGroupName:(NSString *)sharedGroupName {
     id ret = nil;
-    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
+    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service sharedGroupName:sharedGroupName];
     keychainQuery[(__bridge id) kSecReturnData] = (id) kCFBooleanTrue;
     keychainQuery[(__bridge id) kSecMatchLimit] = (__bridge id) kSecMatchLimitOne;
     CFDataRef keyData = NULL;
@@ -256,7 +270,11 @@ + (VKAccessToken *)load:(NSString *)service {
 }
 
 + (void)delete:(NSString *)service {
-    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
+    [self delete:service sharedGroupName:nil];
+}
+
++ (void)delete:(NSString *)service sharedGroupName:(NSString *)sharedGroupName {
+    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service sharedGroupName:sharedGroupName];
     SecItemDelete((__bridge CFDictionaryRef) keychainQuery);
 }
 

library/Source/VKSdk.h

@@ -229,6 +229,14 @@ Initialize SDK with responder for global SDK events.
 + (instancetype)initializeWithAppId:(NSString *)appId
                          apiVersion:(NSString *)version;
 
+
+/**
+ Enable sharing authorize data with keychain sharing
+
+ @param sharedGroupName your keychain sharing group name
+ */
++ (void)enableKeychainSharingWithGroupName:(NSString *)sharedGroupName;
+
 /**
  Adds a weak object reference to an object implementing the VKSdkDelegate protocol.
 

library/Source/VKSdk.m

@@ -74,6 +74,7 @@ @implementation VKSdk
 static VKSdk *vkSdkInstance = nil;
 static NSArray *kSpecialPermissions = nil;
 static NSString *VK_ACCESS_TOKEN_DEFAULTS_KEY = @"VK_ACCESS_TOKEN_DEFAULTS_KEY_DONT_TOUCH_THIS_PLEASE";
+static NSString *_vkSDKSharedGroupName = nil;
 
 
 #pragma mark Initialization
@@ -172,19 +173,18 @@ + (void)authorize:(NSArray *)permissions withOptions:(VKAuthorizationOptions)opt
 
     if (vkApp) {
 
-        UIApplication *application = [UIApplication sharedApplication];
+        UIApplication *application = [VKUtil systemApplication];
 
         // Since iOS 9 there is a dialog asking user if he wants to allow the running app
         // to open another app via URL. If user rejects, then no VK SDK callbacks are called.
         // Fixing this using new -[UIApplication openURL:options:completionHandler:] method (iOS 10+).
 
 #ifdef __AVAILABILITY_INTERNAL__IPHONE_10_0_DEP__IPHONE_10_0
-        if ([application respondsToSelector:@selector(openURL:options:completionHandler:)]) {
+        SEL openURLOptionsCompletion = @selector(openURL:options:completionHandler:);
+        if ([application respondsToSelector:openURLOptionsCompletion]) {
 
             NSDictionary *options = @{ UIApplicationOpenURLOptionUniversalLinksOnly: @NO };
-
-            [application openURL:urlToOpen options:options completionHandler:^(BOOL success) {
-
+            void(^completionHandler)(BOOL) = ^(BOOL success) {
                 if (!success) {
 
                     VKMutableAuthorizationResult *result = [VKMutableAuthorizationResult new];
@@ -193,12 +193,19 @@ + (void)authorize:(NSArray *)permissions withOptions:(VKAuthorizationOptions)opt
 
                     [[VKSdk instance] notifyDelegate:@selector(vkSdkAccessAuthorizationFinishedWithResult:) obj:result];
                 }
-            }];
+            };
+
+            // Workaround for AppExtensions and compiler :)
+            IMP imp = [application methodForSelector:openURLOptionsCompletion];
+            void (*function)(id, SEL, NSURL *, NSDictionary *, void(^)(BOOL)) = (void *)imp;
+            function(application, openURLOptionsCompletion, urlToOpen, options, completionHandler);
         } else {
-            [application openURL:urlToOpen];
+            // Workaround for AppExtensions and compiler :)
+            [application performSelector:@selector(openURL:) withObject:urlToOpen];
         }
 #else
-        [application openURL:urlToOpen];
+        // Workaround for AppExtensions and compiler :)
+        [application performSelector:@selector(openURL:) withObject:urlToOpen];
 #endif
 
         instance.authState = VKAuthorizationExternal;
@@ -221,17 +228,21 @@ + (void)authorize:(NSArray *)permissions withOptions:(VKAuthorizationOptions)opt
 }
 
 + (BOOL)vkAppMayExists {
-    return [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:VK_AUTHORIZE_URL_STRING]];
+    return [[VKUtil systemApplication] canOpenURL:[NSURL URLWithString:VK_AUTHORIZE_URL_STRING]];
 }
 
 #pragma mark Access token
 
++ (void)enableKeychainSharingWithGroupName:(NSString *)sharedGroupName {
+    _vkSDKSharedGroupName = sharedGroupName;
+}
+
 + (void)setAccessToken:(VKAccessToken *)token {
-    [token saveTokenToDefaults:VK_ACCESS_TOKEN_DEFAULTS_KEY];
+    [token saveTokenToDefaults:VK_ACCESS_TOKEN_DEFAULTS_KEY sharedGroupName:_vkSDKSharedGroupName];
 
     id oldToken = vkSdkInstance.accessToken;
     if (!token && oldToken) {
-        [VKAccessToken delete:VK_ACCESS_TOKEN_DEFAULTS_KEY];
+        [VKAccessToken delete:VK_ACCESS_TOKEN_DEFAULTS_KEY sharedGroupName:_vkSDKSharedGroupName];
     }
 
     vkSdkInstance.authState = token ? VKAuthorizationAuthorized : VKAuthorizationInitialized;
@@ -392,7 +403,7 @@ + (void)forceLogout {
             [[NSHTTPCookieStorage sharedHTTPCookieStorage]
                     deleteCookie:cookie];
         }
-    [VKAccessToken delete:VK_ACCESS_TOKEN_DEFAULTS_KEY];
+    [VKAccessToken delete:VK_ACCESS_TOKEN_DEFAULTS_KEY sharedGroupName:_vkSDKSharedGroupName];
 
     if (vkSdkInstance) {
         vkSdkInstance.accessToken = nil;
@@ -407,7 +418,7 @@ + (BOOL)isLoggedIn {
 }
 
 + (void)wakeUpSession:(NSArray *)permissions completeBlock:(void (^)(VKAuthorizationState, NSError *error))wakeUpBlock {
-    VKAccessToken *token = [self accessToken] ?: [VKAccessToken savedToken:VK_ACCESS_TOKEN_DEFAULTS_KEY];
+    VKAccessToken *token = [self accessToken] ?: [VKAccessToken savedToken:VK_ACCESS_TOKEN_DEFAULTS_KEY sharedGroupName:_vkSDKSharedGroupName];
     VKSdk *instance = [self instance];
     if (!token || token.isExpired) {
         [instance resetSdkState];

library/Source/Views/VKActivity.m

@@ -37,7 +37,8 @@ + (UIActivityCategory)activityCategory {
 }
 
 + (BOOL)vkShareExtensionEnabled {
-    return [VKUtil isOperatingSystemAtLeastIOS8] && [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"vk-share://extension"]];
+
+    return [VKUtil isOperatingSystemAtLeastIOS8] && [[VKUtil systemApplication] canOpenURL:[NSURL URLWithString:@"vk-share://extension"]];
 }
 
 - (NSString *)activityType {

library/Source/Views/VKShareDialogController.m

@@ -249,7 +249,7 @@ - (CGSize)preferredContentSize {
 
 - (void)viewWillAppear:(BOOL)animated {
     [super viewWillAppear:animated];
-    UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
+    UIInterfaceOrientation orientation = [[VKUtil systemApplication] statusBarOrientation];
     [self rotateToInterfaceOrientation:orientation appear:YES];
 }
 
@@ -1009,7 +1009,19 @@ - (void)sendMessage:(id)sender {
         [textView becomeFirstResponder];
 
 #if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_8_0
-        [[[UIAlertView alloc] initWithTitle:nil message:VKLocalizedString(@"ErrorWhilePosting") delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil] show];
+
+        SEL initSelector = @selector(initWithTitle:message:delegate:cancelButtonTitle:otherButtonTitles:);
+        UIAlertView *alertView = [UIAlertView alloc];
+
+        NSString *title = VKLocalizedString(@"ErrorWhilePosting");
+        NSString *cancel = @"OK";
+
+        // Workaround for AppExtensions and compiler :)
+        IMP imp = [alertView methodForSelector:initSelector];
+        void (*function)(id, SEL, NSString *, NSString *, id, NSString *, id) = (void *)imp;
+        function(alertView, initSelector, nil, title, nil, cancel, nil);
+
+        [alertView show];
 #else
         UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil message:VKLocalizedString(@"ErrorWhilePosting") preferredStyle:UIAlertControllerStyleAlert];
         UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:nil];