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// 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,
ResourceContext* resource_context)
: BrowserMessageFilter(MediaStreamMsgStart),
render_process_id_(render_process_id),
salt_callback_(salt_callback),
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("
<< ", {label = " << label << "})";
Send(new MediaStreamMsg_StreamGenerated(
render_view_id, page_request_id, label, audio_devices,
video_devices));
}
void MediaStreamDispatcherHost::StreamGenerationFailed(
int render_view_id,
int page_request_id,
content::MediaStreamRequestResult result) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DVLOG(1) << "MediaStreamDispatcherHost::StreamGenerationFailed("
<< ", {page_request_id = " << page_request_id << "}"
<< ", { result= " << result << "})";
Send(new MediaStreamMsg_StreamGenerationFailed(render_view_id,
page_request_id,
result));
}
void MediaStreamDispatcherHost::DeviceStopped(int render_view_id,
const std::string& label,
const StreamDeviceInfo& device) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DVLOG(1) << "MediaStreamDispatcherHost::DeviceStopped("
<< "{label = " << label << "}, "
<< "{type = " << device.device.type << "}, "
<< "{device_id = " << device.device.id << "})";
Send(new MediaStreamMsg_DeviceStopped(render_view_id, label, device));
}
void MediaStreamDispatcherHost::DevicesEnumerated(
int render_view_id,
int page_request_id,
const std::string& label,
const StreamDeviceInfoArray& devices) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DVLOG(1) << "MediaStreamDispatcherHost::DevicesEnumerated("
<< ", {page_request_id = " << page_request_id << "})";
Send(new MediaStreamMsg_DevicesEnumerated(render_view_id, page_request_id,
devices));
}
void MediaStreamDispatcherHost::DeviceOpened(
int render_view_id,
int page_request_id,
const std::string& label,
const StreamDeviceInfo& video_device) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DVLOG(1) << "MediaStreamDispatcherHost::DeviceOpened("
<< ", {page_request_id = " << page_request_id << "})";
Send(new MediaStreamMsg_DeviceOpened(
render_view_id, page_request_id, label, video_device));
}
bool MediaStreamDispatcherHost::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(MediaStreamDispatcherHost, message)
IPC_MESSAGE_HANDLER(MediaStreamHostMsg_GenerateStream, OnGenerateStream)
IPC_MESSAGE_HANDLER(MediaStreamHostMsg_CancelGenerateStream,
OnCancelGenerateStream)
IPC_MESSAGE_HANDLER(MediaStreamHostMsg_StopStreamDevice,
OnStopStreamDevice)
IPC_MESSAGE_HANDLER(MediaStreamHostMsg_EnumerateDevices,
OnEnumerateDevices)
IPC_MESSAGE_HANDLER(MediaStreamHostMsg_CancelEnumerateDevices,
OnCancelEnumerateDevices)
IPC_MESSAGE_HANDLER(MediaStreamHostMsg_OpenDevice,
OnOpenDevice)
IPC_MESSAGE_HANDLER(MediaStreamHostMsg_CloseDevice,
OnCloseDevice)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void MediaStreamDispatcherHost::OnChannelClosing() {
DVLOG(1) << "MediaStreamDispatcherHost::OnChannelClosing";
// Since the IPC channel is gone, close all requesting/requested streams.
media_stream_manager_->CancelAllRequests(render_process_id_);
}
MediaStreamDispatcherHost::~MediaStreamDispatcherHost() {
}
void MediaStreamDispatcherHost::OnGenerateStream(
int render_view_id,
int page_request_id,
const StreamOptions& components,
const GURL& security_origin,
bool user_gesture) {
DVLOG(1) << "MediaStreamDispatcherHost::OnGenerateStream("
<< render_view_id << ", "
<< page_request_id << ", ["
<< " audio:" << components.audio_requested
<< " video:" << components.video_requested
<< " ], "
<< security_origin.spec()
<< ", " << user_gesture << ")";
if (!IsURLAllowed(security_origin))
return;
media_stream_manager_->GenerateStream(
this, render_process_id_, render_view_id, salt_callback_,
page_request_id, components, security_origin, user_gesture);
}
void MediaStreamDispatcherHost::OnCancelGenerateStream(int render_view_id,
int page_request_id) {
DVLOG(1) << "MediaStreamDispatcherHost::OnCancelGenerateStream("
<< render_view_id << ", "
<< page_request_id << ")";
media_stream_manager_->CancelRequest(render_process_id_, render_view_id,
page_request_id);
}
void MediaStreamDispatcherHost::OnStopStreamDevice(
int render_view_id,
const std::string& device_id) {
DVLOG(1) << "MediaStreamDispatcherHost::OnStopStreamDevice("
<< render_view_id << ", "
<< device_id << ")";
media_stream_manager_->StopStreamDevice(render_process_id_, render_view_id,
device_id);
}
void MediaStreamDispatcherHost::OnEnumerateDevices(
int render_view_id,
int page_request_id,
MediaStreamType type,
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 ||
type == MEDIA_DEVICE_AUDIO_OUTPUT);
bool have_permission =
type == MEDIA_DEVICE_AUDIO_CAPTURE || type == MEDIA_DEVICE_AUDIO_OUTPUT ?
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, 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);
}
void MediaStreamDispatcherHost::OnOpenDevice(
int render_view_id,
int page_request_id,
const std::string& device_id,
MediaStreamType type,
const GURL& security_origin) {
DVLOG(1) << "MediaStreamDispatcherHost::OnOpenDevice("
<< render_view_id << ", "
<< page_request_id << ", device_id: "
<< device_id.c_str() << ", type: "
<< type << ", "
<< security_origin.spec() << ")";
if (!IsURLAllowed(security_origin))
return;
media_stream_manager_->OpenDevice(
this, render_process_id_, render_view_id, salt_callback_,
page_request_id, device_id, type, security_origin);
}
void MediaStreamDispatcherHost::OnCloseDevice(
int render_view_id,
const std::string& label) {
DVLOG(1) << "MediaStreamDispatcherHost::OnCloseDevice("
<< render_view_id << ", "
<< label << ")";
media_stream_manager_->CancelRequest(label);
}
bool MediaStreamDispatcherHost::IsURLAllowed(const GURL& url) {
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
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