Adds support for calling postMessage on a frame living in a different renderer.

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 84 matching lines @@
 #include "media/base/media_switches.h"
 #include "media/base/message_loop_factory.h"
 #include "media/filters/audio_renderer_impl.h"
 #include "media/filters/gpu_video_decoder.h"
 #include "net/base/escape.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_util.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebAccessibilityObject.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDataSource.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDOMEvent.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDOMMessageEvent.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFileChooserParams.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFileSystemCallbacks.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFindOptions.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFormControlElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFormElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebHistoryItem.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIntent.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIntentRequest.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIntentServiceInfo.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebMediaPlayerAction.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNodeList.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPageSerializer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginAction.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginContainer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginDocument.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginParams.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebRange.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebScriptSource.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSearchableFormData.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityOrigin.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityPolicy.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSerializedScriptValue.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSettings.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebStorageQuotaCallbacks.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebUserMediaClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebWindowFeatures.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebCString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebDragData.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebGraphicsContext3D.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebImage.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebPeerConnection00Handler.h"
@@ skipping 56 matching lines @@
 using WebKit::WebApplicationCacheHostClient;
 using WebKit::WebCString;
 using WebKit::WebColor;
 using WebKit::WebColorName;
 using WebKit::WebConsoleMessage;
 using WebKit::WebContextMenuData;
 using WebKit::WebCookieJar;
 using WebKit::WebData;
 using WebKit::WebDataSource;
 using WebKit::WebDocument;
+using WebKit::WebDOMEvent;
+using WebKit::WebDOMMessageEvent;
 using WebKit::WebDragData;
 using WebKit::WebDragOperation;
 using WebKit::WebDragOperationsMask;
 using WebKit::WebEditingAction;
 using WebKit::WebElement;
 using WebKit::WebExternalPopupMenu;
 using WebKit::WebExternalPopupMenuClient;
 using WebKit::WebFileChooserCompletion;
 using WebKit::WebFileSystem;
 using WebKit::WebFileSystemCallbacks;
@@ skipping 28 matching lines @@
 using WebKit::WebPluginParams;
 using WebKit::WebPoint;
 using WebKit::WebPopupMenuInfo;
 using WebKit::WebRange;
 using WebKit::WebRect;
 using WebKit::WebReferrerPolicy;
 using WebKit::WebScriptSource;
 using WebKit::WebSearchableFormData;
 using WebKit::WebSecurityOrigin;
 using WebKit::WebSecurityPolicy;
+using WebKit::WebSerializedScriptValue;
 using WebKit::WebSettings;
 using WebKit::WebSharedWorker;
 using WebKit::WebSize;
 using WebKit::WebSocketStreamHandle;
 using WebKit::WebStorageNamespace;
 using WebKit::WebStorageQuotaCallbacks;
 using WebKit::WebStorageQuotaError;
 using WebKit::WebStorageQuotaType;
 using WebKit::WebString;
 using WebKit::WebTextAffinity;
@@ skipping 302 matching lines @@
   ProcessViewLayoutFlags(command_line);
 
   content::GetContentClient()->renderer()->RenderViewCreated(this);
 
   // If we have an opener_id but we weren't created by a renderer, then
   // it's the browser asking us to set our opener to another RenderView.
   // TODO(creis): This doesn't yet handle openers that are subframes.
   if (opener_id != MSG_ROUTING_NONE && !is_renderer_created) {
     RenderViewImpl* opener_view = static_cast<RenderViewImpl*>(
         ChildThread::current()->ResolveRoute(opener_id));
-    webview()->mainFrame()->setOpener(opener_view->webview()->mainFrame());
+    if (opener_view)
+      webview()->mainFrame()->setOpener(opener_view->webview()->mainFrame());
   }
 
   // If we are initially swapped out, navigate to kSwappedOutURL.
   // This ensures we are in a unique origin that others cannot script.
   if (is_swapped_out_)
     NavigateToSwappedOutURL();
 }
 
 RenderViewImpl::~RenderViewImpl() {
   history_page_ids_.clear();
@@ skipping 207 matching lines @@
     IPC_MESSAGE_HANDLER(ViewMsg_FindReplyACK, OnFindReplyAck)
     IPC_MESSAGE_HANDLER(ViewMsg_Zoom, OnZoom)
     IPC_MESSAGE_HANDLER(ViewMsg_SetZoomLevel, OnSetZoomLevel)
     IPC_MESSAGE_HANDLER(ViewMsg_ZoomFactor, OnZoomFactor)
     IPC_MESSAGE_HANDLER(ViewMsg_SetZoomLevelForLoadingURL,
                         OnSetZoomLevelForLoadingURL)
     IPC_MESSAGE_HANDLER(ViewMsg_SetPageEncoding, OnSetPageEncoding)
     IPC_MESSAGE_HANDLER(ViewMsg_ResetPageEncodingToDefault,
                         OnResetPageEncodingToDefault)
     IPC_MESSAGE_HANDLER(ViewMsg_ScriptEvalRequest, OnScriptEvalRequest)
+    IPC_MESSAGE_HANDLER(ViewMsg_PostMessageEvent, OnPostMessageEvent)
     IPC_MESSAGE_HANDLER(ViewMsg_CSSInsertRequest, OnCSSInsertRequest)
     IPC_MESSAGE_HANDLER(DragMsg_TargetDragEnter, OnDragTargetDragEnter)
     IPC_MESSAGE_HANDLER(DragMsg_TargetDragOver, OnDragTargetDragOver)
     IPC_MESSAGE_HANDLER(DragMsg_TargetDragLeave, OnDragTargetDragLeave)
     IPC_MESSAGE_HANDLER(DragMsg_TargetDrop, OnDragTargetDrop)
     IPC_MESSAGE_HANDLER(DragMsg_SourceEndedOrMoved, OnDragSourceEndedOrMoved)
     IPC_MESSAGE_HANDLER(DragMsg_SourceSystemDragEnded,
                         OnDragSourceSystemDragEnded)
     IPC_MESSAGE_HANDLER(ViewMsg_AllowBindings, OnAllowBindings)
     IPC_MESSAGE_HANDLER(ViewMsg_SetWebUIProperty, OnSetWebUIProperty)
@@ skipping 2698 matching lines @@
 }
 
 void RenderViewImpl::dispatchIntent(
     WebFrame* frame, const WebIntentRequest& intentRequest) {
   webkit_glue::WebIntentData intent_data(intentRequest.intent());
   int id = intents_host_->RegisterWebIntent(intentRequest);
   Send(new IntentsHostMsg_WebIntentDispatch(
       routing_id_, intent_data, id));
 }
 
+bool RenderViewImpl::willCheckAndDispatchMessageEvent(
+    WebKit::WebFrame* source,
+    WebKit::WebSecurityOrigin target_origin,
+    WebKit::WebDOMMessageEvent event) {
+  if (!is_swapped_out_)
+    return false;
+
+  ViewHostMsg_PostMessage_Params params;
+  params.data = event.data().toString();
+  params.source_origin = event.origin();
+  if (!target_origin.isNull())
+    params.target_origin = target_origin.toString();
+
+  // Include the routing ID for the source frame, which the browser process
+  // will translate into the routing ID for the equivalent frame in the target
+  // process.
+  // TODO(creis): Support source subframes.
+  params.source_routing_id = MSG_ROUTING_NONE;
+  RenderViewImpl* source_view = FromWebView(source->view());
+  if (source_view)
+    params.source_routing_id = source_view->routing_id();
+
+  Send(new ViewHostMsg_RouteMessageEvent(routing_id_, params));
+  return true;
+}
+
 void RenderViewImpl::willOpenSocketStream(
     WebSocketStreamHandle* handle) {
   SocketStreamHandleData::AddToHandle(handle, routing_id_);
 }
 
 // WebKit::WebPageSerializerClient implementation ------------------------------
 
 void RenderViewImpl::didSerializeDataForFrame(
     const WebURL& frame_url,
     const WebCString& data,
@@ skipping 652 matching lines @@
   return frame;
 }
 
 void RenderViewImpl::OnScriptEvalRequest(const string16& frame_xpath,
                                          const string16& jscript,
                                          int id,
                                          bool notify_result) {
   EvaluateScript(frame_xpath, jscript, id, notify_result);
 }
 
+void RenderViewImpl::OnPostMessageEvent(
+    const ViewHostMsg_PostMessage_Params& params) {
+  // TODO(creis): Support sending to subframes.
+  WebFrame *frame = webview()->mainFrame();
+
+  // Find the source frame if it exists.
+  // TODO(creis): Support source subframes.
+  WebFrame* source_frame = NULL;
+  if (params.source_routing_id != MSG_ROUTING_NONE) {
+    RenderViewImpl* source_view = static_cast<RenderViewImpl*>(
+        ChildThread::current()->ResolveRoute(params.source_routing_id));

[Matt Perry, 2012/05/11 21:59:34]

Maybe move this to a RenderViewImpl::FromRoutingID() to centralize the
conversion casting.

[Charlie Reis, 2012/05/11 22:36:02]

Done.

+    if (source_view)
+      source_frame = source_view->webview()->mainFrame();
+  }
+
+  // Create an event with the message.  The final parameter to initMessageEvent
+  // is the last event ID, which is not used with postMessage.
+  WebDOMEvent event = frame->document().createEvent("MessageEvent");
+  WebDOMMessageEvent msg_event = event.to<WebDOMMessageEvent>();
+  msg_event.initMessageEvent("message",
+                             // |canBubble| and |cancellable| are always false
+                             false, false,
+                             WebSerializedScriptValue::fromString(params.data),
+                             params.source_origin, source_frame, "");
+
+  // We must pass in the target_origin to do the security check on this side,
+  // since it may have changed since the original postMessage call was made.
+  WebSecurityOrigin target_origin;
+  if (!params.target_origin.empty()) {
+    target_origin =
+        WebSecurityOrigin::createFromString(WebString(params.target_origin));
+  }
+  frame->dispatchMessageEventWithOriginCheck(target_origin, msg_event);
+}
+
 void RenderViewImpl::OnCSSInsertRequest(const string16& frame_xpath,
                                         const std::string& css) {
   WebFrame* frame = GetChildFrame(frame_xpath);
   if (!frame)
     return;
 
   frame->document().insertUserStyleSheet(
       WebString::fromUTF8(css),
       WebDocument::UserStyleAuthorLevel);
 }
@@ skipping 1101 matching lines @@
 bool RenderViewImpl::WebWidgetHandlesCompositorScheduling() const {
   return !!RenderThreadImpl::current()->compositor_thread();
 }
 
 void RenderViewImpl::OnJavaBridgeInit() {
   DCHECK(!java_bridge_dispatcher_.get());
 #if defined(ENABLE_JAVA_BRIDGE)
   java_bridge_dispatcher_.reset(new JavaBridgeDispatcher(this));
 #endif
 }