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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/protocol/jingle_session_manager.h"
#include <utility>
#include "base/bind.h"
#include "remoting/protocol/authenticator.h"
#include "remoting/protocol/content_description.h"
#include "remoting/protocol/jingle_messages.h"
#include "remoting/protocol/jingle_session.h"
#include "remoting/protocol/transport.h"
#include "remoting/signaling/iq_sender.h"
#include "remoting/signaling/signal_strategy.h"
#include "third_party/webrtc/base/socketaddress.h"
#include "third_party/webrtc/libjingle/xmllite/xmlelement.h"
using buzz::QName;
namespace remoting {
namespace protocol {
JingleSessionManager::JingleSessionManager(SignalStrategy* signal_strategy)
: signal_strategy_(signal_strategy),
protocol_config_(CandidateSessionConfig::CreateDefault()),
iq_sender_(new IqSender(signal_strategy_)) {
signal_strategy_->AddListener(this);
}
JingleSessionManager::~JingleSessionManager() {
DCHECK(sessions_.empty());
signal_strategy_->RemoveListener(this);
}
void JingleSessionManager::AcceptIncoming(
const IncomingSessionCallback& incoming_session_callback) {
incoming_session_callback_ = incoming_session_callback;
}
void JingleSessionManager::set_protocol_config(
scoped_ptr<CandidateSessionConfig> config) {
protocol_config_ = std::move(config);
}
scoped_ptr<Session> JingleSessionManager::Connect(
const std::string& host_jid,
scoped_ptr<Authenticator> authenticator) {
scoped_ptr<JingleSession> session(new JingleSession(this));
session->StartConnection(host_jid, std::move(authenticator));
sessions_[session->session_id_] = session.get();
return std::move(session);
}
void JingleSessionManager::set_authenticator_factory(
scoped_ptr<AuthenticatorFactory> authenticator_factory) {
DCHECK(CalledOnValidThread());
authenticator_factory_ = std::move(authenticator_factory);
}
void JingleSessionManager::OnSignalStrategyStateChange(
SignalStrategy::State state) {}
bool JingleSessionManager::OnSignalStrategyIncomingStanza(
const buzz::XmlElement* stanza) {
if (!JingleMessage::IsJingleMessage(stanza))
return false;
JingleMessage message;
std::string error;
if (!message.ParseXml(stanza, &error)) {
SendReply(stanza, JingleMessageReply::BAD_REQUEST);
return true;
}
if (message.action == JingleMessage::SESSION_INITIATE) {
// Description must be present in session-initiate messages.
DCHECK(message.description.get());
SendReply(stanza, JingleMessageReply::NONE);
scoped_ptr<Authenticator> authenticator =
authenticator_factory_->CreateAuthenticator(
signal_strategy_->GetLocalJid(), message.from);
JingleSession* session = new JingleSession(this);
session->InitializeIncomingConnection(message, std::move(authenticator));
sessions_[session->session_id_] = session;
// Destroy the session if it was rejected due to incompatible protocol.
if (session->state_ != Session::ACCEPTING) {
delete session;
DCHECK(sessions_.find(message.sid) == sessions_.end());
return true;
}
IncomingSessionResponse response = SessionManager::DECLINE;
if (!incoming_session_callback_.is_null())
incoming_session_callback_.Run(session, &response);
if (response == SessionManager::ACCEPT) {
session->AcceptIncomingConnection(message);
} else {
ErrorCode error;
switch (response) {
case OVERLOAD:
error = HOST_OVERLOAD;
break;
case DECLINE:
error = SESSION_REJECTED;
break;
default:
NOTREACHED();
error = SESSION_REJECTED;
}
session->Close(error);
delete session;
DCHECK(sessions_.find(message.sid) == sessions_.end());
}
return true;
}
SessionsMap::iterator it = sessions_.find(message.sid);
if (it == sessions_.end()) {
SendReply(stanza, JingleMessageReply::INVALID_SID);
return true;
}
it->second->OnIncomingMessage(message, base::Bind(
&JingleSessionManager::SendReply, base::Unretained(this), stanza));
return true;
}
void JingleSessionManager::SendReply(const buzz::XmlElement* original_stanza,
JingleMessageReply::ErrorType error) {
signal_strategy_->SendStanza(
JingleMessageReply(error).ToXml(original_stanza));
}
void JingleSessionManager::SessionDestroyed(JingleSession* session) {
sessions_.erase(session->session_id_);
}
} // namespace protocol
} // namespace remoting
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