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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 "remoting/client/chromoting_client.h"
#include <utility>
#include "remoting/base/capabilities.h"
#include "remoting/client/audio_decode_scheduler.h"
#include "remoting/client/audio_player.h"
#include "remoting/client/client_context.h"
#include "remoting/client/client_user_interface.h"
#include "remoting/protocol/authenticator.h"
#include "remoting/protocol/connection_to_host.h"
#include "remoting/protocol/host_stub.h"
#include "remoting/protocol/ice_connection_to_host.h"
#include "remoting/protocol/jingle_session_manager.h"
#include "remoting/protocol/negotiating_client_authenticator.h"
#include "remoting/protocol/session_config.h"
#include "remoting/protocol/transport_context.h"
#include "remoting/protocol/video_renderer.h"
#include "remoting/protocol/webrtc_connection_to_host.h"
namespace remoting {
ChromotingClient::ChromotingClient(ClientContext* client_context,
ClientUserInterface* user_interface,
protocol::VideoRenderer* video_renderer,
scoped_ptr<AudioPlayer> audio_player)
: user_interface_(user_interface), video_renderer_(video_renderer) {
DCHECK(client_context->main_task_runner()->BelongsToCurrentThread());
if (audio_player) {
audio_decode_scheduler_.reset(new AudioDecodeScheduler(
client_context->main_task_runner(),
client_context->audio_decode_task_runner(), std::move(audio_player)));
}
}
ChromotingClient::~ChromotingClient() {
if (signal_strategy_)
signal_strategy_->RemoveListener(this);
}
void ChromotingClient::set_protocol_config(
scoped_ptr<protocol::CandidateSessionConfig> config) {
protocol_config_ = std::move(config);
}
void ChromotingClient::SetConnectionToHostForTests(
scoped_ptr<protocol::ConnectionToHost> connection_to_host) {
connection_ = std::move(connection_to_host);
}
void ChromotingClient::Start(
SignalStrategy* signal_strategy,
const protocol::ClientAuthenticationConfig& client_auth_config,
scoped_refptr<protocol::TransportContext> transport_context,
const std::string& host_jid,
const std::string& capabilities) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(!session_manager_); // Start must be called more than once.
host_jid_ = host_jid;
local_capabilities_ = capabilities;
if (!protocol_config_)
protocol_config_ = protocol::CandidateSessionConfig::CreateDefault();
if (!audio_decode_scheduler_)
protocol_config_->DisableAudioChannel();
if (!connection_) {
if (protocol_config_->webrtc_supported()) {
DCHECK(!protocol_config_->ice_supported());
#if defined(OS_NACL)
LOG(FATAL) << "WebRTC is not supported in webapp.";
#else // defined(OS_NACL)
connection_.reset(new protocol::WebrtcConnectionToHost());
#endif // !defined(OS_NACL)
} else {
DCHECK(protocol_config_->ice_supported());
connection_.reset(new protocol::IceConnectionToHost());
}
}
connection_->set_client_stub(this);
connection_->set_clipboard_stub(this);
connection_->set_video_renderer(video_renderer_);
connection_->set_audio_stub(audio_decode_scheduler_.get());
session_manager_.reset(new protocol::JingleSessionManager(signal_strategy));
session_manager_->set_protocol_config(std::move(protocol_config_));
client_auth_config_ = client_auth_config;
transport_context_ = transport_context;
signal_strategy_ = signal_strategy;
signal_strategy_->AddListener(this);
switch (signal_strategy_->GetState()) {
case SignalStrategy::CONNECTING:
// Nothing to do here. Just need to wait until |signal_strategy_| becomes
// connected.
break;
case SignalStrategy::CONNECTED:
StartConnection();
break;
case SignalStrategy::DISCONNECTED:
signal_strategy_->Connect();
break;
}
}
void ChromotingClient::SetCapabilities(
const protocol::Capabilities& capabilities) {
DCHECK(thread_checker_.CalledOnValidThread());
// Only accept the first |protocol::Capabilities| message.
if (host_capabilities_received_) {
LOG(WARNING) << "protocol::Capabilities has been received already.";
return;
}
host_capabilities_received_ = true;
if (capabilities.has_capabilities())
host_capabilities_ = capabilities.capabilities();
VLOG(1) << "Host capabilities: " << host_capabilities_;
// Calculate the set of capabilities enabled by both client and host and pass
// it to the webapp.
user_interface_->SetCapabilities(
IntersectCapabilities(local_capabilities_, host_capabilities_));
}
void ChromotingClient::SetPairingResponse(
const protocol::PairingResponse& pairing_response) {
DCHECK(thread_checker_.CalledOnValidThread());
user_interface_->SetPairingResponse(pairing_response);
}
void ChromotingClient::DeliverHostMessage(
const protocol::ExtensionMessage& message) {
DCHECK(thread_checker_.CalledOnValidThread());
user_interface_->DeliverHostMessage(message);
}
void ChromotingClient::InjectClipboardEvent(
const protocol::ClipboardEvent& event) {
DCHECK(thread_checker_.CalledOnValidThread());
user_interface_->GetClipboardStub()->InjectClipboardEvent(event);
}
void ChromotingClient::SetCursorShape(
const protocol::CursorShapeInfo& cursor_shape) {
DCHECK(thread_checker_.CalledOnValidThread());
user_interface_->GetCursorShapeStub()->SetCursorShape(cursor_shape);
}
void ChromotingClient::OnConnectionState(
protocol::ConnectionToHost::State state,
protocol::ErrorCode error) {
DCHECK(thread_checker_.CalledOnValidThread());
VLOG(1) << "ChromotingClient::OnConnectionState(" << state << ")";
if (state == protocol::ConnectionToHost::AUTHENTICATED) {
OnAuthenticated();
} else if (state == protocol::ConnectionToHost::CONNECTED) {
OnChannelsConnected();
}
user_interface_->OnConnectionState(state, error);
}
void ChromotingClient::OnConnectionReady(bool ready) {
VLOG(1) << "ChromotingClient::OnConnectionReady(" << ready << ")";
user_interface_->OnConnectionReady(ready);
}
void ChromotingClient::OnRouteChanged(const std::string& channel_name,
const protocol::TransportRoute& route) {
VLOG(0) << "Using " << protocol::TransportRoute::GetTypeString(route.type)
<< " connection for " << channel_name << " channel";
user_interface_->OnRouteChanged(channel_name, route);
}
void ChromotingClient::OnSignalStrategyStateChange(
SignalStrategy::State state) {
DCHECK(thread_checker_.CalledOnValidThread());
if (state == SignalStrategy::CONNECTED) {
VLOG(1) << "Connected as: " << signal_strategy_->GetLocalJid();
// After signaling has been connected we can try connecting to the host.
if (connection_ &&
connection_->state() == protocol::ConnectionToHost::INITIALIZING) {
StartConnection();
}
} else if (state == SignalStrategy::DISCONNECTED) {
VLOG(1) << "Signaling connection closed.";
connection_.reset();
user_interface_->OnConnectionState(protocol::ConnectionToHost::CLOSED,
protocol::SIGNALING_ERROR);
}
}
bool ChromotingClient::OnSignalStrategyIncomingStanza(
const buzz::XmlElement* stanza) {
return false;
}
void ChromotingClient::StartConnection() {
DCHECK(thread_checker_.CalledOnValidThread());
connection_->Connect(
session_manager_->Connect(
host_jid_,
make_scoped_ptr(new protocol::NegotiatingClientAuthenticator(
signal_strategy_->GetLocalJid(), host_jid_,
client_auth_config_))),
transport_context_, this);
}
void ChromotingClient::OnAuthenticated() {
DCHECK(thread_checker_.CalledOnValidThread());
// Initialize the decoder.
if (connection_->config().is_audio_enabled())
audio_decode_scheduler_->Initialize(connection_->config());
}
void ChromotingClient::OnChannelsConnected() {
DCHECK(thread_checker_.CalledOnValidThread());
// Negotiate capabilities with the host.
VLOG(1) << "Client capabilities: " << local_capabilities_;
protocol::Capabilities capabilities;
capabilities.set_capabilities(local_capabilities_);
connection_->host_stub()->SetCapabilities(capabilities);
}
} // namespace remoting
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