Implement getMediaDevices.

content/browser/renderer_host/media/media_stream_dispatcher_host.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/browser/renderer_host/media/media_stream_dispatcher_host.h"
 
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/common/media/media_stream_messages.h"
 #include "content/common/media/media_stream_options.h"
 #include "content/public/browser/render_process_host.h"
 #include "url/gurl.h"
 
 namespace content {
 
 MediaStreamDispatcherHost::MediaStreamDispatcherHost(
     int render_process_id,
     const ResourceContext::SaltCallback& salt_callback,
-    MediaStreamManager* media_stream_manager)
+    MediaStreamManager* media_stream_manager,
+    ResourceContext* resource_context)
     : BrowserMessageFilter(MediaStreamMsgStart),
       render_process_id_(render_process_id),
       salt_callback_(salt_callback),
-      media_stream_manager_(media_stream_manager) {
+      media_stream_manager_(media_stream_manager),
+      resource_context_(resource_context) {
 }
 
 void MediaStreamDispatcherHost::StreamGenerated(
     int render_view_id,
     int page_request_id,
     const std::string& label,
     const StreamDeviceInfoArray& audio_devices,
     const StreamDeviceInfoArray& video_devices) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DVLOG(1) << "MediaStreamDispatcherHost::StreamGenerated("
@@ skipping 137 matching lines @@
     const GURL& security_origin) {
   DVLOG(1) << "MediaStreamDispatcherHost::OnEnumerateDevices("
            << render_view_id << ", "
            << page_request_id << ", "
            << type << ", "
            << security_origin.spec() << ")";
 
   if (!IsURLAllowed(security_origin))
     return;
 
+  DCHECK(type == MEDIA_DEVICE_AUDIO_CAPTURE ||
+         type == MEDIA_DEVICE_VIDEO_CAPTURE);
+  bool have_permission = type == MEDIA_DEVICE_AUDIO_CAPTURE ?
+      resource_context_->AllowMicAccess(security_origin) :
+      resource_context_->AllowCameraAccess(security_origin);
+
   media_stream_manager_->EnumerateDevices(
       this, render_process_id_, render_view_id, salt_callback_,
-      page_request_id, type, security_origin);
+      page_request_id, type, security_origin, have_permission);
 }
 
 void MediaStreamDispatcherHost::OnCancelEnumerateDevices(
     int render_view_id,
     int page_request_id) {
   DVLOG(1) << "MediaStreamDispatcherHost::OnCancelEnumerateDevices("
            << render_view_id << ", "
            << page_request_id << ")";
   media_stream_manager_->CancelRequest(render_process_id_, render_view_id,
                                        page_request_id);
@@ skipping 34 matching lines @@
   if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanRequestURL(
           render_process_id_, url)) {
     LOG(ERROR) << "MSDH: Renderer requested a URL it's not allowed to use.";
     return false;
   }
 
   return true;
 }
 
 }  // namespace content