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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.
// TODO(ajwong): We assign and read from a few of the member variables on
// two threads. We need to audit this for thread safety.
#include "remoting/jingle_glue/jingle_client.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "remoting/jingle_glue/gaia_token_pre_xmpp_auth.h"
#include "remoting/jingle_glue/iq_request.h"
#include "remoting/jingle_glue/jingle_thread.h"
#include "remoting/jingle_glue/relay_port_allocator.h"
#include "remoting/jingle_glue/xmpp_socket_adapter.h"
#include "third_party/libjingle/source/talk/base/asyncsocket.h"
#include "third_party/libjingle/source/talk/base/ssladapter.h"
#include "third_party/libjingle/source/talk/p2p/base/sessionmanager.h"
#include "third_party/libjingle/source/talk/p2p/client/sessionmanagertask.h"
#ifdef USE_SSL_TUNNEL
#include "third_party/libjingle/source/talk/session/tunnel/securetunnelsessionclient.h"
#endif
#include "third_party/libjingle/source/talk/session/tunnel/tunnelsessionclient.h"
#include "third_party/libjingle/source/talk/xmpp/prexmppauth.h"
#include "third_party/libjingle/source/talk/xmpp/saslcookiemechanism.h"
namespace remoting {
JingleClient::JingleClient(JingleThread* thread)
: client_(NULL),
thread_(thread),
state_(CREATED),
callback_(NULL) {
}
JingleClient::~JingleClient() {
// JingleClient can be destroyed only after it's closed.
DCHECK(state_ == CLOSED || state_ == CREATED);
}
void JingleClient::Init(
const std::string& username, const std::string& auth_token,
const std::string& auth_token_service, Callback* callback) {
DCHECK_NE(username, "");
DCHECK(callback != NULL);
DCHECK(state_ == CREATED);
callback_ = callback;
message_loop()->PostTask(
FROM_HERE, NewRunnableMethod(this, &JingleClient::DoInitialize,
username, auth_token, auth_token_service));
state_ = INITIALIZED;
}
JingleChannel* JingleClient::Connect(const std::string& host_jid,
JingleChannel::Callback* callback) {
// Ownership if channel is given to DoConnect.
scoped_refptr<JingleChannel> channel = new JingleChannel(callback);
message_loop()->PostTask(
FROM_HERE, NewRunnableMethod(this, &JingleClient::DoConnect,
channel, host_jid, callback));
return channel;
}
void JingleClient::DoConnect(scoped_refptr<JingleChannel> channel,
const std::string& host_jid,
JingleChannel::Callback* callback) {
DCHECK_EQ(message_loop(), MessageLoop::current());
talk_base::StreamInterface* stream =
tunnel_session_client_->CreateTunnel(buzz::Jid(host_jid), "");
DCHECK(stream != NULL);
channel->Init(thread_, stream, host_jid);
}
void JingleClient::Close() {
// Once we are closed we really shouldn't talk to the callback again. In the
// case when JingleClient outlives the owner access the callback is not safe.
// TODO(hclam): We need to lock to reset callback.
callback_ = NULL;
message_loop()->PostTask(
FROM_HERE, NewRunnableMethod(this, &JingleClient::DoClose));
}
void JingleClient::DoClose() {
DCHECK_EQ(message_loop(), MessageLoop::current());
// If we have not yet initialized and the client is already closed then
// don't close again.
if (state_ == CLOSED)
return;
if (client_) {
client_->Disconnect();
// Client is deleted by TaskRunner.
client_ = NULL;
}
tunnel_session_client_.reset();
port_allocator_.reset();
session_manager_.reset();
network_manager_.reset();
UpdateState(CLOSED);
}
void JingleClient::DoInitialize(const std::string& username,
const std::string& auth_token,
const std::string& auth_token_service) {
DCHECK_EQ(message_loop(), MessageLoop::current());
buzz::Jid login_jid(username);
buzz::XmppClientSettings settings;
settings.set_user(login_jid.node());
settings.set_host(login_jid.domain());
settings.set_resource("chromoting");
settings.set_use_tls(true);
settings.set_token_service(auth_token_service);
settings.set_auth_cookie(auth_token);
settings.set_server(talk_base::SocketAddress("talk.google.com", 5222));
client_ = new buzz::XmppClient(thread_->task_pump());
client_->SignalStateChange.connect(
this, &JingleClient::OnConnectionStateChanged);
buzz::AsyncSocket* socket = new XmppSocketAdapter(settings, false);
client_->Connect(settings, "", socket, CreatePreXmppAuth(settings));
client_->Start();
network_manager_.reset(new talk_base::NetworkManager());
RelayPortAllocator* port_allocator =
new RelayPortAllocator(network_manager_.get(), "transp2");
port_allocator_.reset(port_allocator);
port_allocator->SetJingleInfo(client_);
session_manager_.reset(new cricket::SessionManager(port_allocator_.get()));
#ifdef USE_SSL_TUNNEL
cricket::SecureTunnelSessionClient* session_client =
new cricket::SecureTunnelSessionClient(client_->jid(),
session_manager_.get());
if (!session_client->GenerateIdentity())
return false;
tunnel_session_client_.reset(session_client);
#else // !USE_SSL_TUNNEL
tunnel_session_client_.reset(
new cricket::TunnelSessionClient(client_->jid(),
session_manager_.get()));
#endif // USE_SSL_TUNNEL
cricket::SessionManagerTask* receiver =
new cricket::SessionManagerTask(client_, session_manager_.get());
receiver->EnableOutgoingMessages();
receiver->Start();
tunnel_session_client_->SignalIncomingTunnel.connect(
this, &JingleClient::OnIncomingTunnel);
}
std::string JingleClient::GetFullJid() {
AutoLock auto_lock(full_jid_lock_);
return full_jid_;
}
IqRequest* JingleClient::CreateIqRequest() {
return new IqRequest(this);
}
MessageLoop* JingleClient::message_loop() {
return thread_->message_loop();
}
void JingleClient::OnConnectionStateChanged(buzz::XmppEngine::State state) {
switch (state) {
case buzz::XmppEngine::STATE_START:
UpdateState(INITIALIZED);
break;
case buzz::XmppEngine::STATE_OPENING:
UpdateState(CONNECTING);
break;
case buzz::XmppEngine::STATE_OPEN:
{
AutoLock auto_lock(full_jid_lock_);
full_jid_ = client_->jid().Str();
}
UpdateState(CONNECTED);
break;
case buzz::XmppEngine::STATE_CLOSED:
UpdateState(CLOSED);
break;
default:
NOTREACHED();
break;
}
}
void JingleClient::OnIncomingTunnel(
cricket::TunnelSessionClient* client, buzz::Jid jid,
std::string description, cricket::Session* session) {
// Decline connection if we don't have callback.
if (!callback_) {
client->DeclineTunnel(session);
return;
}
JingleChannel::Callback* channel_callback;
if (callback_->OnAcceptConnection(this, jid.Str(), &channel_callback)) {
DCHECK(channel_callback != NULL);
talk_base::StreamInterface* stream = client->AcceptTunnel(session);
scoped_refptr<JingleChannel> channel(new JingleChannel(channel_callback));
channel->Init(thread_, stream, jid.Str());
callback_->OnNewConnection(this, channel);
} else {
client->DeclineTunnel(session);
}
}
void JingleClient::UpdateState(State new_state) {
if (new_state != state_) {
state_ = new_state;
if (callback_)
callback_->OnStateChange(this, new_state);
}
}
buzz::PreXmppAuth* JingleClient::CreatePreXmppAuth(
const buzz::XmppClientSettings& settings) {
buzz::Jid jid(settings.user(), settings.host(), buzz::STR_EMPTY);
return new GaiaTokenPreXmppAuth(jid.Str(), settings.auth_cookie(),
settings.token_service());
}
} // namespace remoting
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