1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "chrome/browser/extensions/extension_message_handler.h"
6
7 #include "chrome/browser/extensions/extension_message_service.h"
8 #include "chrome/browser/profiles/profile.h"
9 #include "chrome/common/extensions/extension_messages.h"
10 #include "content/browser/child_process_security_policy.h"
11 #include "content/browser/renderer_host/render_process_host.h"
12 #include "content/browser/renderer_host/render_view_host.h"
13 #include "content/browser/renderer_host/render_view_host_delegate.h"
14
ExtensionMessageHandler(RenderViewHost * render_view_host)15 ExtensionMessageHandler::ExtensionMessageHandler(
16 RenderViewHost* render_view_host)
17 : RenderViewHostObserver(render_view_host) {
18 }
19
~ExtensionMessageHandler()20 ExtensionMessageHandler::~ExtensionMessageHandler() {
21 }
22
OnMessageReceived(const IPC::Message & message)23 bool ExtensionMessageHandler::OnMessageReceived(
24 const IPC::Message& message) {
25 bool handled = true;
26 IPC_BEGIN_MESSAGE_MAP(ExtensionMessageHandler, message)
27 IPC_MESSAGE_HANDLER(ExtensionHostMsg_PostMessage, OnPostMessage)
28 IPC_MESSAGE_HANDLER(ExtensionHostMsg_Request, OnRequest)
29 IPC_MESSAGE_UNHANDLED(handled = false)
30 IPC_END_MESSAGE_MAP()
31 return handled;
32 }
33
OnPostMessage(int port_id,const std::string & message)34 void ExtensionMessageHandler::OnPostMessage(int port_id,
35 const std::string& message) {
36 Profile* profile = render_view_host()->process()->profile();
37 if (profile->GetExtensionMessageService()) {
38 profile->GetExtensionMessageService()->PostMessageFromRenderer(
39 port_id, message);
40 }
41 }
42
OnRequest(const ExtensionHostMsg_DomMessage_Params & params)43 void ExtensionMessageHandler::OnRequest(
44 const ExtensionHostMsg_DomMessage_Params& params) {
45 if (!ChildProcessSecurityPolicy::GetInstance()->
46 HasExtensionBindings(render_view_host()->process()->id())) {
47 // This can happen if someone uses window.open() to open an extension URL
48 // from a non-extension context.
49 Send(new ExtensionMsg_Response(
50 routing_id(), params.request_id, false, std::string(),
51 "Access to extension API denied."));
52 return;
53 }
54
55 render_view_host()->delegate()->ProcessWebUIMessage(params);
56 }
57