content/browser/renderer_host/media/media_stream_dispatcher_host.cc

   1 // Copyright (c) 2012 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 "content/browser/renderer_host/media/media_stream_dispatcher_host.h"
   6
   7 #include "content/browser/browser_main_loop.h"
   8 #include "content/browser/child_process_security_policy_impl.h"
   9 #include "content/common/media/media_stream_messages.h"
  10 #include "content/common/media/media_stream_options.h"
  11 #include "content/public/browser/render_process_host.h"
  12 #include "url/gurl.h"
  13
  14 namespace content {
  15
  16 MediaStreamDispatcherHost::MediaStreamDispatcherHost(
  17     int render_process_id,
  18     const ResourceContext::SaltCallback& salt_callback,
  19     MediaStreamManager* media_stream_manager)
  20     : BrowserMessageFilter(MediaStreamMsgStart),
  21       render_process_id_(render_process_id),
  22       salt_callback_(salt_callback),
  23       media_stream_manager_(media_stream_manager) {
  24 }
  25
  26 void MediaStreamDispatcherHost::StreamGenerated(
  27     int render_view_id,
  28     int page_request_id,
  29     const std::string& label,
  30     const StreamDeviceInfoArray& audio_devices,
  31     const StreamDeviceInfoArray& video_devices) {
  32   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  33   DVLOG(1) << "MediaStreamDispatcherHost::StreamGenerated("
  34            << ", {label = " << label <<  "})";
  35
  36   Send(new MediaStreamMsg_StreamGenerated(
  37       render_view_id, page_request_id, label, audio_devices,
  38       video_devices));
  39 }
  40
  41 void MediaStreamDispatcherHost::StreamGenerationFailed(
  42     int render_view_id,
  43     int page_request_id,
  44     content::MediaStreamRequestResult result) {
  45   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  46   DVLOG(1) << "MediaStreamDispatcherHost::StreamGenerationFailed("
  47            << ", {page_request_id = " << page_request_id <<  "}"
  48            << ", { result= " << result << "})";
  49
  50
  51   Send(new MediaStreamMsg_StreamGenerationFailed(render_view_id,
  52                                                  page_request_id,
  53                                                  result));
  54 }
  55
  56 void MediaStreamDispatcherHost::DeviceStopped(int render_view_id,
  57                                               const std::string& label,
  58                                               const StreamDeviceInfo& device) {
  59   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  60   DVLOG(1) << "MediaStreamDispatcherHost::DeviceStopped("
  61            << "{label = " << label << "}, "
  62            << "{type = " << device.device.type << "}, "
  63            << "{device_id = " << device.device.id << "})";
  64
  65   Send(new MediaStreamMsg_DeviceStopped(render_view_id, label, device));
  66 }
  67
  68 void MediaStreamDispatcherHost::DevicesEnumerated(
  69     int render_view_id,
  70     int page_request_id,
  71     const std::string& label,
  72     const StreamDeviceInfoArray& devices) {
  73   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  74   DVLOG(1) << "MediaStreamDispatcherHost::DevicesEnumerated("
  75            << ", {page_request_id = " << page_request_id <<  "})";
  76
  77   Send(new MediaStreamMsg_DevicesEnumerated(render_view_id, page_request_id,
  78                                             devices));
  79 }
  80
  81 void MediaStreamDispatcherHost::DeviceOpened(
  82     int render_view_id,
  83     int page_request_id,
  84     const std::string& label,
  85     const StreamDeviceInfo& video_device) {
  86   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  87   DVLOG(1) << "MediaStreamDispatcherHost::DeviceOpened("
  88            << ", {page_request_id = " << page_request_id <<  "})";
  89
  90   Send(new MediaStreamMsg_DeviceOpened(
  91       render_view_id, page_request_id, label, video_device));
  92 }
  93
  94 bool MediaStreamDispatcherHost::OnMessageReceived(
  95     const IPC::Message& message, bool* message_was_ok) {
  96   bool handled = true;
  97   IPC_BEGIN_MESSAGE_MAP_EX(MediaStreamDispatcherHost, message, *message_was_ok)
  98     IPC_MESSAGE_HANDLER(MediaStreamHostMsg_GenerateStream, OnGenerateStream)
  99     IPC_MESSAGE_HANDLER(MediaStreamHostMsg_CancelGenerateStream,
 100                         OnCancelGenerateStream)
 101     IPC_MESSAGE_HANDLER(MediaStreamHostMsg_StopStreamDevice,
 102                         OnStopStreamDevice)
 103     IPC_MESSAGE_HANDLER(MediaStreamHostMsg_EnumerateDevices,
 104                         OnEnumerateDevices)
 105     IPC_MESSAGE_HANDLER(MediaStreamHostMsg_CancelEnumerateDevices,
 106                         OnCancelEnumerateDevices)
 107     IPC_MESSAGE_HANDLER(MediaStreamHostMsg_OpenDevice,
 108                         OnOpenDevice)
 109     IPC_MESSAGE_HANDLER(MediaStreamHostMsg_CloseDevice,
 110                         OnCloseDevice)
 111     IPC_MESSAGE_UNHANDLED(handled = false)
 112   IPC_END_MESSAGE_MAP_EX()
 113   return handled;
 114 }
 115
 116 void MediaStreamDispatcherHost::OnChannelClosing() {
 117   DVLOG(1) << "MediaStreamDispatcherHost::OnChannelClosing";
 118
 119   // Since the IPC channel is gone, close all requesting/requested streams.
 120   media_stream_manager_->CancelAllRequests(render_process_id_);
 121 }
 122
 123 MediaStreamDispatcherHost::~MediaStreamDispatcherHost() {
 124 }
 125
 126 void MediaStreamDispatcherHost::OnGenerateStream(
 127     int render_view_id,
 128     int page_request_id,
 129     const StreamOptions& components,
 130     const GURL& security_origin,
 131     bool user_gesture) {
 132   DVLOG(1) << "MediaStreamDispatcherHost::OnGenerateStream("
 133            << render_view_id << ", "
 134            << page_request_id << ", ["
 135            << " audio:" << components.audio_requested
 136            << " video:" << components.video_requested
 137            << " ], "
 138            << security_origin.spec()
 139            << ", " << user_gesture << ")";
 140
 141   if (!IsURLAllowed(security_origin))
 142     return;
 143
 144   media_stream_manager_->GenerateStream(
 145       this, render_process_id_, render_view_id, salt_callback_,
 146       page_request_id, components, security_origin, user_gesture);
 147 }
 148
 149 void MediaStreamDispatcherHost::OnCancelGenerateStream(int render_view_id,
 150                                                        int page_request_id) {
 151   DVLOG(1) << "MediaStreamDispatcherHost::OnCancelGenerateStream("
 152            << render_view_id << ", "
 153            << page_request_id << ")";
 154   media_stream_manager_->CancelRequest(render_process_id_, render_view_id,
 155                                        page_request_id);
 156 }
 157
 158 void MediaStreamDispatcherHost::OnStopStreamDevice(
 159     int render_view_id,
 160     const std::string& device_id) {
 161   DVLOG(1) << "MediaStreamDispatcherHost::OnStopStreamDevice("
 162            << render_view_id << ", "
 163            << device_id << ")";
 164   media_stream_manager_->StopStreamDevice(render_process_id_, render_view_id,
 165                                           device_id);
 166 }
 167
 168 void MediaStreamDispatcherHost::OnEnumerateDevices(
 169     int render_view_id,
 170     int page_request_id,
 171     MediaStreamType type,
 172     const GURL& security_origin) {
 173   DVLOG(1) << "MediaStreamDispatcherHost::OnEnumerateDevices("
 174            << render_view_id << ", "
 175            << page_request_id << ", "
 176            << type << ", "
 177            << security_origin.spec() << ")";
 178
 179   if (!IsURLAllowed(security_origin))
 180     return;
 181
 182   media_stream_manager_->EnumerateDevices(
 183       this, render_process_id_, render_view_id, salt_callback_,
 184       page_request_id, type, security_origin);
 185 }
 186
 187 void MediaStreamDispatcherHost::OnCancelEnumerateDevices(
 188     int render_view_id,
 189     int page_request_id) {
 190   DVLOG(1) << "MediaStreamDispatcherHost::OnCancelEnumerateDevices("
 191            << render_view_id << ", "
 192            << page_request_id << ")";
 193   media_stream_manager_->CancelRequest(render_process_id_, render_view_id,
 194                                        page_request_id);
 195 }
 196
 197 void MediaStreamDispatcherHost::OnOpenDevice(
 198     int render_view_id,
 199     int page_request_id,
 200     const std::string& device_id,
 201     MediaStreamType type,
 202     const GURL& security_origin) {
 203   DVLOG(1) << "MediaStreamDispatcherHost::OnOpenDevice("
 204            << render_view_id << ", "
 205            << page_request_id << ", device_id: "
 206            << device_id.c_str() << ", type: "
 207            << type << ", "
 208            << security_origin.spec() << ")";
 209
 210   if (!IsURLAllowed(security_origin))
 211     return;
 212
 213   media_stream_manager_->OpenDevice(
 214       this, render_process_id_, render_view_id, salt_callback_,
 215       page_request_id, device_id, type, security_origin);
 216 }
 217
 218 void MediaStreamDispatcherHost::OnCloseDevice(
 219     int render_view_id,
 220     const std::string& label) {
 221   DVLOG(1) << "MediaStreamDispatcherHost::OnCloseDevice("
 222            << render_view_id << ", "
 223            << label << ")";
 224
 225   media_stream_manager_->CancelRequest(label);
 226 }
 227
 228 bool MediaStreamDispatcherHost::IsURLAllowed(const GURL& url) {
 229   if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanRequestURL(
 230           render_process_id_, url)) {
 231     LOG(ERROR) << "MSDH: Renderer requested a URL it's not allowed to use.";
 232     return false;
 233   }
 234
 235   return true;
 236 }
 237
 238 }  // namespace content