| // Copyright 2013 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "remoting/signaling/delegating_signal_strategy.h" |
| |
| #include "base/functional/bind.h" |
| #include "base/logging.h" |
| #include "base/rand_util.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/task/single_thread_task_runner.h" |
| #include "remoting/signaling/xmpp_constants.h" |
| #include "third_party/libjingle_xmpp/xmllite/xmlelement.h" |
| |
| namespace remoting { |
| |
| DelegatingSignalStrategy::DelegatingSignalStrategy( |
| const SignalingAddress& local_address, |
| scoped_refptr<base::SingleThreadTaskRunner> client_task_runner, |
| const IqCallback& send_iq_callback) |
| : local_address_(local_address), |
| delegate_task_runner_(base::SingleThreadTaskRunner::GetCurrentDefault()), |
| client_task_runner_(client_task_runner), |
| send_iq_callback_(send_iq_callback) { |
| incoming_iq_callback_ = |
| base::BindRepeating(&OnIncomingMessageFromDelegate, |
| weak_factory_.GetWeakPtr(), client_task_runner_); |
| } |
| |
| DelegatingSignalStrategy::~DelegatingSignalStrategy() = default; |
| |
| DelegatingSignalStrategy::IqCallback |
| DelegatingSignalStrategy::GetIncomingMessageCallback() { |
| return incoming_iq_callback_; |
| } |
| |
| // static |
| void DelegatingSignalStrategy::OnIncomingMessageFromDelegate( |
| base::WeakPtr<DelegatingSignalStrategy> weak_ptr, |
| scoped_refptr<base::SingleThreadTaskRunner> client_task_runner, |
| const std::string& message) { |
| if (client_task_runner->BelongsToCurrentThread()) { |
| weak_ptr->OnIncomingMessage(message); |
| return; |
| } |
| |
| client_task_runner->PostTask( |
| FROM_HERE, base::BindOnce(&DelegatingSignalStrategy::OnIncomingMessage, |
| weak_ptr, message)); |
| } |
| |
| void DelegatingSignalStrategy::OnIncomingMessage(const std::string& message) { |
| DCHECK(client_task_runner_->BelongsToCurrentThread()); |
| std::unique_ptr<jingle_xmpp::XmlElement> stanza( |
| jingle_xmpp::XmlElement::ForStr(message)); |
| if (!stanza.get()) { |
| LOG(WARNING) << "Malformed XMPP stanza received: " << message; |
| return; |
| } |
| |
| for (auto& listener : listeners_) { |
| if (listener.OnSignalStrategyIncomingStanza(stanza.get())) { |
| break; |
| } |
| } |
| } |
| |
| void DelegatingSignalStrategy::Connect() { |
| DCHECK(client_task_runner_->BelongsToCurrentThread()); |
| for (auto& observer : listeners_) { |
| observer.OnSignalStrategyStateChange(CONNECTED); |
| } |
| } |
| |
| void DelegatingSignalStrategy::Disconnect() { |
| DCHECK(client_task_runner_->BelongsToCurrentThread()); |
| } |
| |
| SignalStrategy::State DelegatingSignalStrategy::GetState() const { |
| DCHECK(client_task_runner_->BelongsToCurrentThread()); |
| return CONNECTED; |
| } |
| |
| SignalStrategy::Error DelegatingSignalStrategy::GetError() const { |
| DCHECK(client_task_runner_->BelongsToCurrentThread()); |
| return OK; |
| } |
| |
| const SignalingAddress& DelegatingSignalStrategy::GetLocalAddress() const { |
| DCHECK(client_task_runner_->BelongsToCurrentThread()); |
| return local_address_; |
| } |
| |
| void DelegatingSignalStrategy::AddListener(Listener* listener) { |
| DCHECK(client_task_runner_->BelongsToCurrentThread()); |
| listeners_.AddObserver(listener); |
| } |
| |
| void DelegatingSignalStrategy::RemoveListener(Listener* listener) { |
| DCHECK(client_task_runner_->BelongsToCurrentThread()); |
| listeners_.RemoveObserver(listener); |
| } |
| |
| bool DelegatingSignalStrategy::SendStanza( |
| std::unique_ptr<jingle_xmpp::XmlElement> stanza) { |
| DCHECK(client_task_runner_->BelongsToCurrentThread()); |
| GetLocalAddress().SetInMessage(stanza.get(), SignalingAddress::FROM); |
| delegate_task_runner_->PostTask( |
| FROM_HERE, base::BindOnce(send_iq_callback_, stanza->Str())); |
| return true; |
| } |
| |
| bool DelegatingSignalStrategy::SendMessage( |
| const SignalingAddress& destination_address, |
| const ftl::ChromotingMessage& message) { |
| DCHECK(client_task_runner_->BelongsToCurrentThread()); |
| NOTIMPLEMENTED(); |
| return false; |
| } |
| |
| std::string DelegatingSignalStrategy::GetNextId() { |
| return base::NumberToString(base::RandUint64()); |
| } |
| |
| } // namespace remoting |