/** * Copyright (c) 2015-present, Facebook, Inc. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. */ #import "RNCWebView.h" #import #import #import "RNCWKProcessPoolManager.h" #if !TARGET_OS_OSX #import #else #import #endif // !TARGET_OS_OSX #import "objc/runtime.h" static NSTimer *keyboardTimer; static NSString *const HistoryShimName = @"ReactNativeHistoryShim"; static NSString *const MessageHandlerName = @"ReactNativeWebView"; static NSURLCredential* clientAuthenticationCredential; static NSDictionary* customCertificatesForHost; #if !TARGET_OS_OSX // runtime trick to remove WKWebView keyboard default toolbar // see: http://stackoverflow.com/questions/19033292/ios-7-uiwebview-keyboard-issue/19042279#19042279 @interface _SwizzleHelperWK : UIView @property (nonatomic, copy) WKWebView *webView; @end @implementation _SwizzleHelperWK -(id)inputAccessoryView { if (_webView == nil) { return nil; } if ([_webView respondsToSelector:@selector(inputAssistantItem)]) { UITextInputAssistantItem *inputAssistantItem = [_webView inputAssistantItem]; inputAssistantItem.leadingBarButtonGroups = @[]; inputAssistantItem.trailingBarButtonGroups = @[]; } return nil; } @end #endif // !TARGET_OS_OSX #if TARGET_OS_OSX @interface RNCWKWebView : WKWebView @end @implementation RNCWKWebView - (void)scrollWheel:(NSEvent *)theEvent { RNCWebView *rncWebView = (RNCWebView *)[self superview]; RCTAssert([rncWebView isKindOfClass:[rncWebView class]], @"superview must be an RNCWebView"); if (![rncWebView scrollEnabled]) { [[self nextResponder] scrollWheel:theEvent]; return; } [super scrollWheel:theEvent]; } @end #endif // TARGET_OS_OSX @interface RNCWebView () @property (nonatomic, copy) RCTDirectEventBlock onLoadingStart; @property (nonatomic, copy) RCTDirectEventBlock onLoadingFinish; @property (nonatomic, copy) RCTDirectEventBlock onLoadingError; @property (nonatomic, copy) RCTDirectEventBlock onLoadingProgress; @property (nonatomic, copy) RCTDirectEventBlock onShouldStartLoadWithRequest; @property (nonatomic, copy) RCTDirectEventBlock onHttpError; @property (nonatomic, copy) RCTDirectEventBlock onMessage; @property (nonatomic, copy) RCTDirectEventBlock onScroll; @property (nonatomic, copy) RCTDirectEventBlock onContentProcessDidTerminate; #if !TARGET_OS_OSX @property (nonatomic, copy) WKWebView *webView; #else @property (nonatomic, copy) RNCWKWebView *webView; #endif // !TARGET_OS_OSX @end @implementation RNCWebView { #if !TARGET_OS_OSX UIColor * _savedBackgroundColor; #else RCTUIColor * _savedBackgroundColor; #endif // !TARGET_OS_OSX BOOL _savedHideKeyboardAccessoryView; BOOL _savedKeyboardDisplayRequiresUserAction; // Workaround for StatusBar appearance bug for iOS 12 // https://github.com/react-native-community/react-native-webview/issues/62 BOOL _isFullScreenVideoOpen; #if !TARGET_OS_OSX UIStatusBarStyle _savedStatusBarStyle; #endif // !TARGET_OS_OSX BOOL _savedStatusBarHidden; #if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */ UIScrollViewContentInsetAdjustmentBehavior _savedContentInsetAdjustmentBehavior; #endif } - (instancetype)initWithFrame:(CGRect)frame { if ((self = [super initWithFrame:frame])) { #if !TARGET_OS_OSX super.backgroundColor = [UIColor clearColor]; #else super.backgroundColor = [RCTUIColor clearColor]; #endif // !TARGET_OS_OSX _bounces = YES; _scrollEnabled = YES; _showsHorizontalScrollIndicator = YES; _showsVerticalScrollIndicator = YES; _directionalLockEnabled = YES; _automaticallyAdjustContentInsets = YES; _contentInset = UIEdgeInsetsZero; _savedKeyboardDisplayRequiresUserAction = YES; #if !TARGET_OS_OSX _savedStatusBarStyle = RCTSharedApplication().statusBarStyle; _savedStatusBarHidden = RCTSharedApplication().statusBarHidden; #endif // !TARGET_OS_OSX #if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */ _savedContentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever; #endif } #if !TARGET_OS_OSX if (@available(iOS 12.0, *)) { // Workaround for a keyboard dismissal bug present in iOS 12 // https://openradar.appspot.com/radar?id=5018321736957952 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide) name:UIKeyboardWillHideNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow) name:UIKeyboardWillShowNotification object:nil]; // Workaround for StatusBar appearance bug for iOS 12 // https://github.com/react-native-community/react-native-webview/issues/62 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showFullScreenVideoStatusBars) name:UIWindowDidBecomeVisibleNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideFullScreenVideoStatusBars) name:UIWindowDidBecomeHiddenNotification object:nil]; } #endif // !TARGET_OS_OSX return self; } - (void)dealloc { [[NSNotificationCenter defaultCenter] removeObserver:self]; } /** * See https://stackoverflow.com/questions/25713069/why-is-wkwebview-not-opening-links-with-target-blank/25853806#25853806 for details. */ - (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures { if (!navigationAction.targetFrame.isMainFrame) { [webView loadRequest:navigationAction.request]; } return nil; } - (WKWebViewConfiguration *)setUpWkWebViewConfig { WKWebViewConfiguration *wkWebViewConfig = [WKWebViewConfiguration new]; WKPreferences *prefs = [[WKPreferences alloc]init]; BOOL _prefsUsed = NO; if (!_javaScriptEnabled) { prefs.javaScriptEnabled = NO; _prefsUsed = YES; } if (_allowFileAccessFromFileURLs) { [prefs setValue:@TRUE forKey:@"allowFileAccessFromFileURLs"]; _prefsUsed = YES; } if (_prefsUsed) { wkWebViewConfig.preferences = prefs; } if (_incognito) { wkWebViewConfig.websiteDataStore = [WKWebsiteDataStore nonPersistentDataStore]; } else if (_cacheEnabled) { wkWebViewConfig.websiteDataStore = [WKWebsiteDataStore defaultDataStore]; } if(self.useSharedProcessPool) { wkWebViewConfig.processPool = [[RNCWKProcessPoolManager sharedManager] sharedProcessPool]; } wkWebViewConfig.userContentController = [WKUserContentController new]; // Shim the HTML5 history API: [wkWebViewConfig.userContentController addScriptMessageHandler:[[RNCWeakScriptMessageDelegate alloc] initWithDelegate:self] name:HistoryShimName]; NSString *source = [NSString stringWithFormat: @"(function(history) {\n" " function notify(type) {\n" " setTimeout(function() {\n" " window.webkit.messageHandlers.%@.postMessage(type)\n" " }, 0)\n" " }\n" " function shim(f) {\n" " return function pushState() {\n" " notify('other')\n" " return f.apply(history, arguments)\n" " }\n" " }\n" " history.pushState = shim(history.pushState)\n" " history.replaceState = shim(history.replaceState)\n" " window.addEventListener('popstate', function() {\n" " notify('backforward')\n" " })\n" "})(window.history)\n", HistoryShimName ]; WKUserScript *script = [[WKUserScript alloc] initWithSource:source injectionTime:WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly:YES]; [wkWebViewConfig.userContentController addUserScript:script]; if (_messagingEnabled) { [wkWebViewConfig.userContentController addScriptMessageHandler:[[RNCWeakScriptMessageDelegate alloc] initWithDelegate:self] name:MessageHandlerName]; NSString *source = [NSString stringWithFormat: @"window.%@ = {" " postMessage: function (data) {" " window.webkit.messageHandlers.%@.postMessage(String(data));" " }" "};", MessageHandlerName, MessageHandlerName ]; WKUserScript *script = [[WKUserScript alloc] initWithSource:source injectionTime:WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly:YES]; [wkWebViewConfig.userContentController addUserScript:script]; if (_injectedJavaScriptBeforeContentLoaded) { // If user has provided an injectedJavascript prop, execute it at the start of the document WKUserScript *injectedScript = [[WKUserScript alloc] initWithSource:_injectedJavaScriptBeforeContentLoaded injectionTime:WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly:YES]; [wkWebViewConfig.userContentController addUserScript:injectedScript]; } } #if !TARGET_OS_OSX wkWebViewConfig.allowsInlineMediaPlayback = _allowsInlineMediaPlayback; #if WEBKIT_IOS_10_APIS_AVAILABLE wkWebViewConfig.mediaTypesRequiringUserActionForPlayback = _mediaPlaybackRequiresUserAction ? WKAudiovisualMediaTypeAll : WKAudiovisualMediaTypeNone; wkWebViewConfig.dataDetectorTypes = _dataDetectorTypes; #else wkWebViewConfig.mediaPlaybackRequiresUserAction = _mediaPlaybackRequiresUserAction; #endif #endif // !TARGET_OS_OSX if (_applicationNameForUserAgent) { wkWebViewConfig.applicationNameForUserAgent = [NSString stringWithFormat:@"%@ %@", wkWebViewConfig.applicationNameForUserAgent, _applicationNameForUserAgent]; } if(_sharedCookiesEnabled) { // More info to sending cookies with WKWebView // https://stackoverflow.com/questions/26573137/can-i-set-the-cookies-to-be-used-by-a-wkwebview/26577303#26577303 if (@available(iOS 11.0, *)) { // Set Cookies in iOS 11 and above, initialize websiteDataStore before setting cookies // See also https://forums.developer.apple.com/thread/97194 // check if websiteDataStore has not been initialized before if(!_incognito && !_cacheEnabled) { wkWebViewConfig.websiteDataStore = [WKWebsiteDataStore nonPersistentDataStore]; } for (NSHTTPCookie *cookie in [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]) { [wkWebViewConfig.websiteDataStore.httpCookieStore setCookie:cookie completionHandler:nil]; } } else { NSMutableString *script = [NSMutableString string]; // Clear all existing cookies in a direct called function. This ensures that no // javascript error will break the web content javascript. // We keep this code here, if someone requires that Cookies are also removed within the // the WebView and want to extends the current sharedCookiesEnabled option with an // additional property. // Generates JS: document.cookie = "key=; Expires=Thu, 01 Jan 1970 00:00:01 GMT;" // for each cookie which is already available in the WebView context. /* [script appendString:@"(function () {\n"]; [script appendString:@" var cookies = document.cookie.split('; ');\n"]; [script appendString:@" for (var i = 0; i < cookies.length; i++) {\n"]; [script appendString:@" if (cookies[i].indexOf('=') !== -1) {\n"]; [script appendString:@" document.cookie = cookies[i].split('=')[0] + '=; Expires=Thu, 01 Jan 1970 00:00:01 GMT';\n"]; [script appendString:@" }\n"]; [script appendString:@" }\n"]; [script appendString:@"})();\n\n"]; */ // Set cookies in a direct called function. This ensures that no // javascript error will break the web content javascript. // Generates JS: document.cookie = "key=value; Path=/; Expires=Thu, 01 Jan 20xx 00:00:01 GMT;" // for each cookie which is available in the application context. [script appendString:@"(function () {\n"]; for (NSHTTPCookie *cookie in [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]) { [script appendFormat:@"document.cookie = %@ + '=' + %@", RCTJSONStringify(cookie.name, NULL), RCTJSONStringify(cookie.value, NULL)]; if (cookie.path) { [script appendFormat:@" + '; Path=' + %@", RCTJSONStringify(cookie.path, NULL)]; } if (cookie.expiresDate) { [script appendFormat:@" + '; Expires=' + new Date(%f).toUTCString()", cookie.expiresDate.timeIntervalSince1970 * 1000 ]; } [script appendString:@";\n"]; } [script appendString:@"})();\n"]; WKUserScript* cookieInScript = [[WKUserScript alloc] initWithSource:script injectionTime:WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly:YES]; [wkWebViewConfig.userContentController addUserScript:cookieInScript]; } } return wkWebViewConfig; } - (void)didMoveToWindow { if (self.window != nil && _webView == nil) { WKWebViewConfiguration *wkWebViewConfig = [self setUpWkWebViewConfig]; #if !TARGET_OS_OSX _webView = [[WKWebView alloc] initWithFrame:self.bounds configuration: wkWebViewConfig]; #else _webView = [[RNCWKWebView alloc] initWithFrame:self.bounds configuration: wkWebViewConfig]; #endif // !TARGET_OS_OSX [self setBackgroundColor: _savedBackgroundColor]; #if !TARGET_OS_OSX _webView.scrollView.delegate = self; #endif // !TARGET_OS_OSX _webView.UIDelegate = self; _webView.navigationDelegate = self; #if !TARGET_OS_OSX _webView.scrollView.scrollEnabled = _scrollEnabled; _webView.scrollView.pagingEnabled = _pagingEnabled; _webView.scrollView.bounces = _bounces; _webView.scrollView.showsHorizontalScrollIndicator = _showsHorizontalScrollIndicator; _webView.scrollView.showsVerticalScrollIndicator = _showsVerticalScrollIndicator; _webView.scrollView.directionalLockEnabled = _directionalLockEnabled; #endif // !TARGET_OS_OSX _webView.allowsLinkPreview = _allowsLinkPreview; [_webView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionOld | NSKeyValueObservingOptionNew context:nil]; _webView.allowsBackForwardNavigationGestures = _allowsBackForwardNavigationGestures; if (_userAgent) { _webView.customUserAgent = _userAgent; } #if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */ if ([_webView.scrollView respondsToSelector:@selector(setContentInsetAdjustmentBehavior:)]) { _webView.scrollView.contentInsetAdjustmentBehavior = _savedContentInsetAdjustmentBehavior; } #endif [self addSubview:_webView]; [self setHideKeyboardAccessoryView: _savedHideKeyboardAccessoryView]; [self setKeyboardDisplayRequiresUserAction: _savedKeyboardDisplayRequiresUserAction]; [self visitSource]; } } // Update webview property when the component prop changes. - (void)setAllowsBackForwardNavigationGestures:(BOOL)allowsBackForwardNavigationGestures { _allowsBackForwardNavigationGestures = allowsBackForwardNavigationGestures; _webView.allowsBackForwardNavigationGestures = _allowsBackForwardNavigationGestures; } - (void)removeFromSuperview { if (_webView) { [_webView.configuration.userContentController removeScriptMessageHandlerForName:MessageHandlerName]; [_webView removeObserver:self forKeyPath:@"estimatedProgress"]; [_webView removeFromSuperview]; #if !TARGET_OS_OSX _webView.scrollView.delegate = nil; #endif // !TARGET_OS_OSX _webView = nil; } [super removeFromSuperview]; } #if !TARGET_OS_OSX -(void)showFullScreenVideoStatusBars { #pragma clang diagnostic ignored "-Wdeprecated-declarations" _isFullScreenVideoOpen = YES; RCTUnsafeExecuteOnMainQueueSync(^{ [RCTSharedApplication() setStatusBarStyle:UIStatusBarStyleLightContent animated:YES]; }); #pragma clang diagnostic pop } -(void)hideFullScreenVideoStatusBars { #pragma clang diagnostic ignored "-Wdeprecated-declarations" _isFullScreenVideoOpen = NO; RCTUnsafeExecuteOnMainQueueSync(^{ [RCTSharedApplication() setStatusBarHidden:self->_savedStatusBarHidden animated:YES]; [RCTSharedApplication() setStatusBarStyle:self->_savedStatusBarStyle animated:YES]; }); #pragma clang diagnostic pop } -(void)keyboardWillHide { keyboardTimer = [NSTimer scheduledTimerWithTimeInterval:0 target:self selector:@selector(keyboardDisplacementFix) userInfo:nil repeats:false]; [[NSRunLoop mainRunLoop] addTimer:keyboardTimer forMode:NSRunLoopCommonModes]; } -(void)keyboardWillShow { if (keyboardTimer != nil) { [keyboardTimer invalidate]; } } -(void)keyboardDisplacementFix { // Additional viewport checks to prevent unintentional scrolls UIScrollView *scrollView = self.webView.scrollView; double maxContentOffset = scrollView.contentSize.height - scrollView.frame.size.height; if (maxContentOffset < 0) { maxContentOffset = 0; } if (scrollView.contentOffset.y > maxContentOffset) { // https://stackoverflow.com/a/9637807/824966 [UIView animateWithDuration:.25 animations:^{ scrollView.contentOffset = CGPointMake(0, maxContentOffset); }]; } } #endif // !TARGET_OS_OSX - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context{ if ([keyPath isEqual:@"estimatedProgress"] && object == self.webView) { if(_onLoadingProgress){ NSMutableDictionary *event = [self baseEvent]; [event addEntriesFromDictionary:@{@"progress":[NSNumber numberWithDouble:self.webView.estimatedProgress]}]; _onLoadingProgress(event); } }else{ [super observeValueForKeyPath:keyPath ofObject:object change:change context:context]; } } #if !TARGET_OS_OSX - (void)setBackgroundColor:(UIColor *)backgroundColor #else - (void)setBackgroundColor:(RCTUIColor *)backgroundColor #endif // !TARGET_OS_OSX { _savedBackgroundColor = backgroundColor; if (_webView == nil) { return; } CGFloat alpha = CGColorGetAlpha(backgroundColor.CGColor); BOOL opaque = (alpha == 1.0); #if !TARGET_OS_OSX self.opaque = _webView.opaque = opaque; _webView.scrollView.backgroundColor = backgroundColor; _webView.backgroundColor = backgroundColor; #else // https://stackoverflow.com/questions/40007753/macos-wkwebview-background-transparency NSOperatingSystemVersion version = { 10, 12, 0 }; if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion:version]) { [_webView setValue:@(opaque) forKey: @"drawsBackground"]; } else { [_webView setValue:@(!opaque) forKey: @"drawsTransparentBackground"]; } #endif // !TARGET_OS_OSX } #if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */ - (void)setContentInsetAdjustmentBehavior:(UIScrollViewContentInsetAdjustmentBehavior)behavior { _savedContentInsetAdjustmentBehavior = behavior; if (_webView == nil) { return; } if ([_webView.scrollView respondsToSelector:@selector(setContentInsetAdjustmentBehavior:)]) { CGPoint contentOffset = _webView.scrollView.contentOffset; _webView.scrollView.contentInsetAdjustmentBehavior = behavior; _webView.scrollView.contentOffset = contentOffset; } } #endif /** * This method is called whenever JavaScript running within the web view calls: * - window.webkit.messageHandlers[MessageHandlerName].postMessage */ - (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message { if ([message.name isEqualToString:HistoryShimName]) { if (_onLoadingFinish) { NSMutableDictionary *event = [self baseEvent]; [event addEntriesFromDictionary: @{@"navigationType": message.body}]; _onLoadingFinish(event); } } else if ([message.name isEqualToString:MessageHandlerName]) { if (_onMessage) { NSMutableDictionary *event = [self baseEvent]; [event addEntriesFromDictionary: @{@"data": message.body}]; _onMessage(event); } } } - (void)setSource:(NSDictionary *)source { if (![_source isEqualToDictionary:source]) { _source = [source copy]; if (_webView != nil) { [self visitSource]; } } } - (void)setAllowingReadAccessToURL:(NSString *)allowingReadAccessToURL { if (![_allowingReadAccessToURL isEqualToString:allowingReadAccessToURL]) { _allowingReadAccessToURL = [allowingReadAccessToURL copy]; if (_webView != nil) { [self visitSource]; } } } #if !TARGET_OS_OSX - (void)setContentInset:(UIEdgeInsets)contentInset { _contentInset = contentInset; [RCTView autoAdjustInsetsForView:self withScrollView:_webView.scrollView updateOffset:NO]; } - (void)refreshContentInset { [RCTView autoAdjustInsetsForView:self withScrollView:_webView.scrollView updateOffset:YES]; } #endif // !TARGET_OS_OSX - (void)visitSource { // Check for a static html source first NSString *html = [RCTConvert NSString:_source[@"html"]]; if (html) { NSURL *baseURL = [RCTConvert NSURL:_source[@"baseUrl"]]; if (!baseURL) { baseURL = [NSURL URLWithString:@"about:blank"]; } [_webView loadHTMLString:html baseURL:baseURL]; return; } NSURLRequest *request = [self requestForSource:_source]; // Because of the way React works, as pages redirect, we actually end up // passing the redirect urls back here, so we ignore them if trying to load // the same url. We'll expose a call to 'reload' to allow a user to load // the existing page. if ([request.URL isEqual:_webView.URL]) { return; } if (!request.URL) { // Clear the webview [_webView loadHTMLString:@"" baseURL:nil]; return; } if (request.URL.host) { NSString *path = [request.URL path]; NSString *extension = [path pathExtension]; NSString* absolutePath = request.URL.absoluteString; if (@available(iOS 13, *) && [extension caseInsensitiveCompare:@"pdf"] == NSOrderedSame) { NSData *pdfData = [NSData dataWithContentsOfURL:request.URL]; [self.webView loadData:pdfData MIMEType:@"application/pdf" characterEncodingName:[NSString string] baseURL:[NSURL URLWithString:absolutePath]]; } else { [_webView loadRequest:request]; } } else { NSURL* readAccessUrl = _allowingReadAccessToURL ? [RCTConvert NSURL:_allowingReadAccessToURL] : request.URL; [_webView loadFileURL:request.URL allowingReadAccessToURL:readAccessUrl]; } } #if !TARGET_OS_OSX -(void)setKeyboardDisplayRequiresUserAction:(BOOL)keyboardDisplayRequiresUserAction { if (_webView == nil) { _savedKeyboardDisplayRequiresUserAction = keyboardDisplayRequiresUserAction; return; } if (_savedKeyboardDisplayRequiresUserAction == true) { return; } UIView* subview; for (UIView* view in _webView.scrollView.subviews) { if([[view.class description] hasPrefix:@"WK"]) subview = view; } if(subview == nil) return; Class class = subview.class; NSOperatingSystemVersion iOS_11_3_0 = (NSOperatingSystemVersion){11, 3, 0}; NSOperatingSystemVersion iOS_12_2_0 = (NSOperatingSystemVersion){12, 2, 0}; NSOperatingSystemVersion iOS_13_0_0 = (NSOperatingSystemVersion){13, 0, 0}; Method method; IMP override; if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_13_0_0]) { // iOS 13.0.0 - Future SEL selector = sel_getUid("_elementDidFocus:userIsInteracting:blurPreviousNode:activityStateChanges:userObject:"); method = class_getInstanceMethod(class, selector); IMP original = method_getImplementation(method); override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, BOOL arg3, id arg4) { ((void (*)(id, SEL, void*, BOOL, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3, arg4); }); } else if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_12_2_0]) { // iOS 12.2.0 - iOS 13.0.0 SEL selector = sel_getUid("_elementDidFocus:userIsInteracting:blurPreviousNode:changingActivityState:userObject:"); method = class_getInstanceMethod(class, selector); IMP original = method_getImplementation(method); override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, BOOL arg3, id arg4) { ((void (*)(id, SEL, void*, BOOL, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3, arg4); }); } else if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_11_3_0]) { // iOS 11.3.0 - 12.2.0 SEL selector = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:changingActivityState:userObject:"); method = class_getInstanceMethod(class, selector); IMP original = method_getImplementation(method); override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, BOOL arg3, id arg4) { ((void (*)(id, SEL, void*, BOOL, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3, arg4); }); } else { // iOS 9.0 - 11.3.0 SEL selector = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:userObject:"); method = class_getInstanceMethod(class, selector); IMP original = method_getImplementation(method); override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, id arg3) { ((void (*)(id, SEL, void*, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3); }); } method_setImplementation(method, override); } -(void)setHideKeyboardAccessoryView:(BOOL)hideKeyboardAccessoryView { if (_webView == nil) { _savedHideKeyboardAccessoryView = hideKeyboardAccessoryView; return; } if (_savedHideKeyboardAccessoryView == false) { return; } UIView* subview; for (UIView* view in _webView.scrollView.subviews) { if([[view.class description] hasPrefix:@"WK"]) subview = view; } if(subview == nil) return; NSString* name = [NSString stringWithFormat:@"%@_SwizzleHelperWK", subview.class.superclass]; Class newClass = NSClassFromString(name); if(newClass == nil) { newClass = objc_allocateClassPair(subview.class, [name cStringUsingEncoding:NSASCIIStringEncoding], 0); if(!newClass) return; Method method = class_getInstanceMethod([_SwizzleHelperWK class], @selector(inputAccessoryView)); class_addMethod(newClass, @selector(inputAccessoryView), method_getImplementation(method), method_getTypeEncoding(method)); objc_registerClassPair(newClass); } object_setClass(subview, newClass); } // UIScrollViewDelegate method - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView { scrollView.decelerationRate = _decelerationRate; } #endif // !TARGET_OS_OSX - (void)setScrollEnabled:(BOOL)scrollEnabled { _scrollEnabled = scrollEnabled; #if !TARGET_OS_OSX _webView.scrollView.scrollEnabled = scrollEnabled; #endif // !TARGET_OS_OSX } #if !TARGET_OS_OSX // UIScrollViewDelegate method - (void)scrollViewDidScroll:(UIScrollView *)scrollView { // Don't allow scrolling the scrollView. if (!_scrollEnabled) { scrollView.bounds = _webView.bounds; } else if (_onScroll != nil) { NSDictionary *event = @{ @"contentOffset": @{ @"x": @(scrollView.contentOffset.x), @"y": @(scrollView.contentOffset.y) }, @"contentInset": @{ @"top": @(scrollView.contentInset.top), @"left": @(scrollView.contentInset.left), @"bottom": @(scrollView.contentInset.bottom), @"right": @(scrollView.contentInset.right) }, @"contentSize": @{ @"width": @(scrollView.contentSize.width), @"height": @(scrollView.contentSize.height) }, @"layoutMeasurement": @{ @"width": @(scrollView.frame.size.width), @"height": @(scrollView.frame.size.height) }, @"zoomScale": @(scrollView.zoomScale ?: 1), }; _onScroll(event); } } - (void)setDirectionalLockEnabled:(BOOL)directionalLockEnabled { _directionalLockEnabled = directionalLockEnabled; _webView.scrollView.directionalLockEnabled = directionalLockEnabled; } - (void)setShowsHorizontalScrollIndicator:(BOOL)showsHorizontalScrollIndicator { _showsHorizontalScrollIndicator = showsHorizontalScrollIndicator; _webView.scrollView.showsHorizontalScrollIndicator = showsHorizontalScrollIndicator; } - (void)setShowsVerticalScrollIndicator:(BOOL)showsVerticalScrollIndicator { _showsVerticalScrollIndicator = showsVerticalScrollIndicator; _webView.scrollView.showsVerticalScrollIndicator = showsVerticalScrollIndicator; } #endif // !TARGET_OS_OSX - (void)postMessage:(NSString *)message { NSDictionary *eventInitDict = @{@"data": message}; NSString *source = [NSString stringWithFormat:@"window.dispatchEvent(new MessageEvent('message', %@));", RCTJSONStringify(eventInitDict, NULL) ]; [self injectJavaScript: source]; } - (void)layoutSubviews { [super layoutSubviews]; // Ensure webview takes the position and dimensions of RNCWebView _webView.frame = self.bounds; #if !TARGET_OS_OSX _webView.scrollView.contentInset = _contentInset; #endif // !TARGET_OS_OSX } - (NSMutableDictionary *)baseEvent { NSDictionary *event = @{ @"url": _webView.URL.absoluteString ?: @"", @"title": _webView.title ?: @"", @"loading" : @(_webView.loading), @"canGoBack": @(_webView.canGoBack), @"canGoForward" : @(_webView.canGoForward) }; return [[NSMutableDictionary alloc] initWithDictionary: event]; } + (void)setClientAuthenticationCredential:(nullable NSURLCredential*)credential { clientAuthenticationCredential = credential; } + (void)setCustomCertificatesForHost:(nullable NSDictionary*)certificates { customCertificatesForHost = certificates; } - (void) webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * _Nullable))completionHandler { NSString* host = nil; if (webView.URL != nil) { host = webView.URL.host; } if ([[challenge protectionSpace] authenticationMethod] == NSURLAuthenticationMethodClientCertificate) { completionHandler(NSURLSessionAuthChallengeUseCredential, clientAuthenticationCredential); return; } if ([[challenge protectionSpace] serverTrust] != nil && customCertificatesForHost != nil && host != nil) { SecCertificateRef localCertificate = (__bridge SecCertificateRef)([customCertificatesForHost objectForKey:host]); if (localCertificate != nil) { NSData *localCertificateData = (NSData*) CFBridgingRelease(SecCertificateCopyData(localCertificate)); SecTrustRef trust = [[challenge protectionSpace] serverTrust]; long count = SecTrustGetCertificateCount(trust); for (long i = 0; i < count; i++) { SecCertificateRef serverCertificate = SecTrustGetCertificateAtIndex(trust, i); if (serverCertificate == nil) { continue; } NSData *serverCertificateData = (NSData *) CFBridgingRelease(SecCertificateCopyData(serverCertificate)); if ([serverCertificateData isEqualToData:localCertificateData]) { NSURLCredential *useCredential = [NSURLCredential credentialForTrust:trust]; if (challenge.sender != nil) { [challenge.sender useCredential:useCredential forAuthenticationChallenge:challenge]; } completionHandler(NSURLSessionAuthChallengeUseCredential, useCredential); return; } } } } completionHandler(NSURLSessionAuthChallengePerformDefaultHandling, nil); } #pragma mark - WKNavigationDelegate methods /** * alert */ - (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler { #if !TARGET_OS_OSX UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"" message:message preferredStyle:UIAlertControllerStyleAlert]; [alert addAction:[UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) { completionHandler(); }]]; [[self topViewController] presentViewController:alert animated:YES completion:NULL]; #else NSAlert *alert = [[NSAlert alloc] init]; [alert setMessageText:message]; [alert beginSheetModalForWindow:[NSApp keyWindow] completionHandler:^(__unused NSModalResponse response){ completionHandler(); }]; #endif // !TARGET_OS_OSX } /** * confirm */ - (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL))completionHandler{ #if !TARGET_OS_OSX UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"" message:message preferredStyle:UIAlertControllerStyleAlert]; [alert addAction:[UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) { completionHandler(YES); }]]; [alert addAction:[UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) { completionHandler(NO); }]]; [[self topViewController] presentViewController:alert animated:YES completion:NULL]; #else NSAlert *alert = [[NSAlert alloc] init]; [alert setMessageText:message]; [alert addButtonWithTitle:NSLocalizedString(@"OK", @"OK button")]; [alert addButtonWithTitle:NSLocalizedString(@"Cancel", @"Cancel button")]; void (^callbacksHandlers)(NSModalResponse response) = ^void(NSModalResponse response) { completionHandler(response == NSAlertFirstButtonReturn); }; [alert beginSheetModalForWindow:[NSApp keyWindow] completionHandler:callbacksHandlers]; #endif // !TARGET_OS_OSX } /** * prompt */ - (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString *))completionHandler{ #if !TARGET_OS_OSX UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"" message:prompt preferredStyle:UIAlertControllerStyleAlert]; [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) { textField.text = defaultText; }]; UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) { completionHandler([[alert.textFields lastObject] text]); }]; [alert addAction:okAction]; UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) { completionHandler(nil); }]; [alert addAction:cancelAction]; alert.preferredAction = okAction; [[self topViewController] presentViewController:alert animated:YES completion:NULL]; #else NSAlert *alert = [[NSAlert alloc] init]; [alert setMessageText:prompt]; const NSRect RCTSingleTextFieldFrame = NSMakeRect(0.0, 0.0, 275.0, 22.0); NSTextField *textField = [[NSTextField alloc] initWithFrame:RCTSingleTextFieldFrame]; textField.cell.scrollable = YES; if (@available(macOS 10.11, *)) { textField.maximumNumberOfLines = 1; } textField.stringValue = defaultText; [alert setAccessoryView:textField]; [alert addButtonWithTitle:NSLocalizedString(@"OK", @"OK button")]; [alert addButtonWithTitle:NSLocalizedString(@"Cancel", @"Cancel button")]; [alert beginSheetModalForWindow:[NSApp keyWindow] completionHandler:^(NSModalResponse response) { if (response == NSAlertFirstButtonReturn) { completionHandler([textField stringValue]); } else { completionHandler(nil); } }]; #endif // !TARGET_OS_OSX } #if !TARGET_OS_OSX /** * topViewController */ -(UIViewController *)topViewController{ UIViewController *controller = [self topViewControllerWithRootViewController:[self getCurrentWindow].rootViewController]; return controller; } /** * topViewControllerWithRootViewController */ -(UIViewController *)topViewControllerWithRootViewController:(UIViewController *)viewController{ if (viewController==nil) return nil; if (viewController.presentedViewController!=nil) { return [self topViewControllerWithRootViewController:viewController.presentedViewController]; } else if ([viewController isKindOfClass:[UITabBarController class]]){ return [self topViewControllerWithRootViewController:[(UITabBarController *)viewController selectedViewController]]; } else if ([viewController isKindOfClass:[UINavigationController class]]){ return [self topViewControllerWithRootViewController:[(UINavigationController *)viewController visibleViewController]]; } else { return viewController; } } /** * getCurrentWindow */ -(UIWindow *)getCurrentWindow{ UIWindow *window = [UIApplication sharedApplication].keyWindow; if (window.windowLevel!=UIWindowLevelNormal) { for (UIWindow *wid in [UIApplication sharedApplication].windows) { if (window.windowLevel==UIWindowLevelNormal) { window = wid; break; } } } return window; } #endif // !TARGET_OS_OSX /** * Decides whether to allow or cancel a navigation. * @see https://fburl.com/42r9fxob */ - (void) webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler { static NSDictionary *navigationTypes; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ navigationTypes = @{ @(WKNavigationTypeLinkActivated): @"click", @(WKNavigationTypeFormSubmitted): @"formsubmit", @(WKNavigationTypeBackForward): @"backforward", @(WKNavigationTypeReload): @"reload", @(WKNavigationTypeFormResubmitted): @"formresubmit", @(WKNavigationTypeOther): @"other", }; }); WKNavigationType navigationType = navigationAction.navigationType; NSURLRequest *request = navigationAction.request; if (_onShouldStartLoadWithRequest) { NSMutableDictionary *event = [self baseEvent]; [event addEntriesFromDictionary: @{ @"url": (request.URL).absoluteString, @"mainDocumentURL": (request.mainDocumentURL).absoluteString, @"navigationType": navigationTypes[@(navigationType)] }]; if (![self.delegate webView:self shouldStartLoadForRequest:event withCallback:_onShouldStartLoadWithRequest]) { decisionHandler(WKNavigationActionPolicyCancel); return; } } if (_onLoadingStart) { // We have this check to filter out iframe requests and whatnot BOOL isTopFrame = [request.URL isEqual:request.mainDocumentURL]; if (isTopFrame) { NSMutableDictionary *event = [self baseEvent]; [event addEntriesFromDictionary: @{ @"url": (request.URL).absoluteString, @"navigationType": navigationTypes[@(navigationType)] }]; _onLoadingStart(event); } } // Allow all navigation by default decisionHandler(WKNavigationActionPolicyAllow); } /** * Called when the web view’s content process is terminated. * @see https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455639-webviewwebcontentprocessdidtermi?language=objc */ - (void)webViewWebContentProcessDidTerminate:(WKWebView *)webView { RCTLogWarn(@"Webview Process Terminated"); if (_onContentProcessDidTerminate) { NSMutableDictionary *event = [self baseEvent]; _onContentProcessDidTerminate(event); } } /** * Decides whether to allow or cancel a navigation after its response is known. * @see https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455643-webview?language=objc */ - (void) webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler { if (_onHttpError && navigationResponse.forMainFrame) { if ([navigationResponse.response isKindOfClass:[NSHTTPURLResponse class]]) { NSHTTPURLResponse *response = (NSHTTPURLResponse *)navigationResponse.response; NSInteger statusCode = response.statusCode; if (statusCode >= 400) { NSMutableDictionary *event = [self baseEvent]; [event addEntriesFromDictionary: @{ @"url": response.URL.absoluteString, @"statusCode": @(statusCode) }]; _onHttpError(event); } } } decisionHandler(WKNavigationResponsePolicyAllow); } /** * Called when an error occurs while the web view is loading content. * @see https://fburl.com/km6vqenw */ - (void) webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(NSError *)error { if (_onLoadingError) { if ([error.domain isEqualToString:NSURLErrorDomain] && error.code == NSURLErrorCancelled) { // NSURLErrorCancelled is reported when a page has a redirect OR if you load // a new URL in the WebView before the previous one came back. We can just // ignore these since they aren't real errors. // http://stackoverflow.com/questions/1024748/how-do-i-fix-nsurlerrordomain-error-999-in-iphone-3-0-os return; } if ([error.domain isEqualToString:@"WebKitErrorDomain"] && error.code == 102 || [error.domain isEqualToString:@"WebKitErrorDomain"] && error.code == 101) { // Error code 102 "Frame load interrupted" is raised by the WKWebView // when the URL is from an http redirect. This is a common pattern when // implementing OAuth with a WebView. return; } NSMutableDictionary *event = [self baseEvent]; [event addEntriesFromDictionary:@{ @"didFailProvisionalNavigation": @YES, @"domain": error.domain, @"code": @(error.code), @"description": error.localizedDescription, }]; _onLoadingError(event); } } - (void)evaluateJS:(NSString *)js thenCall: (void (^)(NSString*)) callback { [self.webView evaluateJavaScript: js completionHandler: ^(id result, NSError *error) { if (callback != nil) { callback([NSString stringWithFormat:@"%@", result]); } if (error != nil) { RCTLogWarn(@"%@", [NSString stringWithFormat:@"Error evaluating injectedJavaScript: This is possibly due to an unsupported return type. Try adding true to the end of your injectedJavaScript string. %@", error]); } }]; } /** * Called when the navigation is complete. * @see https://fburl.com/rtys6jlb */ - (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation { if (_injectedJavaScript) { [self evaluateJS: _injectedJavaScript thenCall: ^(NSString *jsEvaluationValue) { NSMutableDictionary *event = [self baseEvent]; event[@"jsEvaluationValue"] = jsEvaluationValue; if (self.onLoadingFinish) { self.onLoadingFinish(event); } }]; } else if (_onLoadingFinish) { _onLoadingFinish([self baseEvent]); } } - (void)injectJavaScript:(NSString *)script { [self evaluateJS: script thenCall: nil]; } - (void)goForward { [_webView goForward]; } - (void)goBack { [_webView goBack]; } - (void)reload { /** * When the initial load fails due to network connectivity issues, * [_webView reload] doesn't reload the webpage. Therefore, we must * manually call [_webView loadRequest:request]. */ NSURLRequest *request = [self requestForSource:self.source]; if (request.URL && !_webView.URL.absoluteString.length) { [_webView loadRequest:request]; } else { [_webView reload]; } } - (void)stopLoading { [_webView stopLoading]; } #if !TARGET_OS_OSX - (void)setBounces:(BOOL)bounces { _bounces = bounces; _webView.scrollView.bounces = bounces; } #endif // !TARGET_OS_OSX - (NSURLRequest *)requestForSource:(id)json { NSURLRequest *request = [RCTConvert NSURLRequest:self.source]; // If sharedCookiesEnabled we automatically add all application cookies to the // http request. This is automatically done on iOS 11+ in the WebView constructor. // Se we need to manually add these shared cookies here only for iOS versions < 11. if (_sharedCookiesEnabled) { if (@available(iOS 11.0, *)) { // see WKWebView initialization for added cookies } else { NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:request.URL]; NSDictionary *cookieHeader = [NSHTTPCookie requestHeaderFieldsWithCookies:cookies]; NSMutableURLRequest *mutableRequest = [request mutableCopy]; [mutableRequest setAllHTTPHeaderFields:cookieHeader]; return mutableRequest; } } return request; } @end @implementation RNCWeakScriptMessageDelegate - (instancetype)initWithDelegate:(id)scriptDelegate { self = [super init]; if (self) { _scriptDelegate = scriptDelegate; } return self; } - (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message { [self.scriptDelegate userContentController:userContentController didReceiveScriptMessage:message]; } @end