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// Copyright (c) 2010 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/protocol/connection_to_host.h"
#include "base/callback.h"
#include "base/message_loop.h"
#include "remoting/base/constants.h"
#include "remoting/jingle_glue/jingle_thread.h"
#include "remoting/proto/auth.pb.h"
#include "remoting/protocol/client_message_dispatcher.h"
#include "remoting/protocol/client_stub.h"
#include "remoting/protocol/host_control_sender.h"
#include "remoting/protocol/input_sender.h"
#include "remoting/protocol/jingle_session_manager.h"
#include "remoting/protocol/video_reader.h"
#include "remoting/protocol/video_stub.h"
#include "remoting/protocol/util.h"
namespace remoting {
namespace protocol {
ConnectionToHost::ConnectionToHost(
JingleThread* thread,
talk_base::NetworkManager* network_manager,
talk_base::PacketSocketFactory* socket_factory)
: thread_(thread),
network_manager_(network_manager),
socket_factory_(socket_factory),
event_callback_(NULL),
dispatcher_(new ClientMessageDispatcher()) {
}
ConnectionToHost::~ConnectionToHost() {
}
InputStub* ConnectionToHost::input_stub() {
return input_stub_.get();
}
HostStub* ConnectionToHost::host_stub() {
return host_stub_.get();
}
MessageLoop* ConnectionToHost::message_loop() {
return thread_->message_loop();
}
void ConnectionToHost::Connect(const std::string& username,
const std::string& auth_token,
const std::string& host_jid,
HostEventCallback* event_callback,
ClientStub* client_stub,
VideoStub* video_stub) {
event_callback_ = event_callback;
client_stub_ = client_stub;
video_stub_ = video_stub;
// Initialize |jingle_client_|.
if (1 == 0) {
signal_strategy_.reset(new JavascriptSignalStrategy());
} else {
signal_strategy_.reset(
new XmppSignalStrategy(thread_, username, auth_token,
kChromotingTokenServiceName));
}
jingle_client_ = new JingleClient(thread_, signal_strategy_.get(),
network_manager_.release(),
socket_factory_.release(), this);
jingle_client_->Init();
// Save jid of the host. The actual connection is created later after
// |jingle_client_| is connected.
host_jid_ = host_jid;
}
void ConnectionToHost::Disconnect() {
if (MessageLoop::current() != message_loop()) {
message_loop()->PostTask(
FROM_HERE, NewRunnableMethod(this, &ConnectionToHost::Disconnect));
return;
}
if (session_) {
session_->Close(
NewRunnableMethod(this, &ConnectionToHost::OnDisconnected));
} else {
OnDisconnected();
}
}
void ConnectionToHost::InitSession() {
DCHECK_EQ(message_loop(), MessageLoop::current());
// Initialize chromotocol |session_manager_|.
JingleSessionManager* session_manager =
new JingleSessionManager(thread_);
// TODO(ajwong): Make this a command switch when we're more stable.
session_manager->set_allow_local_ips(true);
session_manager->Init(
jingle_client_->GetFullJid(),
jingle_client_->session_manager(),
NewCallback(this, &ConnectionToHost::OnNewSession),
NULL, NULL);
session_manager_ = session_manager;
CandidateSessionConfig* candidate_config =
CandidateSessionConfig::CreateDefault();
// TODO(sergeyu): Set resolution in the |candidate_config| to the desired
// resolution.
ClientAuthToken auth_token_proto;
auth_token_proto.set_host_full_jid(host_jid_);
auth_token_proto.set_client_full_jid(jingle_client_->GetFullJid());
// TODO(ajwong): Use real token.
auth_token_proto.set_client_oauth_token("");
// TODO(ajwong): We should encrypt this based on the host's public key.
std::string client_token = auth_token_proto.SerializeAsString();
// Initialize |session_|.
session_ = session_manager_->Connect(
host_jid_, client_token, candidate_config,
NewCallback(this, &ConnectionToHost::OnSessionStateChange));
}
void ConnectionToHost::OnDisconnected() {
session_ = NULL;
if (session_manager_) {
session_manager_->Close(
NewRunnableMethod(this, &ConnectionToHost::OnServerClosed));
} else {
OnServerClosed();
}
}
void ConnectionToHost::OnServerClosed() {
session_manager_ = NULL;
if (jingle_client_) {
jingle_client_->Close();
jingle_client_ = NULL;
}
}
const SessionConfig* ConnectionToHost::config() {
return session_->config();
}
// JingleClient::Callback interface.
void ConnectionToHost::OnStateChange(JingleClient* client,
JingleClient::State state) {
DCHECK_EQ(message_loop(), MessageLoop::current());
DCHECK(client);
DCHECK(event_callback_);
if (state == JingleClient::CONNECTED) {
VLOG(1) << "Connected as: " << client->GetFullJid();
InitSession();
} else if (state == JingleClient::CLOSED) {
VLOG(1) << "Connection closed.";
event_callback_->OnConnectionClosed(this);
}
}
void ConnectionToHost::OnNewSession(Session* session,
SessionManager::IncomingSessionResponse* response) {
DCHECK_EQ(message_loop(), MessageLoop::current());
// Client always rejects incoming sessions.
*response = SessionManager::DECLINE;
}
void ConnectionToHost::OnSessionStateChange(
Session::State state) {
DCHECK_EQ(message_loop(), MessageLoop::current());
DCHECK(event_callback_);
switch (state) {
case Session::FAILED:
event_callback_->OnConnectionFailed(this);
break;
case Session::CLOSED:
event_callback_->OnConnectionClosed(this);
break;
case Session::CONNECTED:
// Initialize reader and writer.
video_reader_.reset(VideoReader::Create(session_->config()));
video_reader_->Init(session_, video_stub_);
input_stub_.reset(new InputSender(session_->event_channel()));
host_stub_.reset(new HostControlSender(session_->control_channel()));
dispatcher_->Initialize(session_.get(), client_stub_);
event_callback_->OnConnectionOpened(this);
break;
default:
// Ignore the other states by default.
break;
}
}
} // namespace protocol
} // namespace remoting
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