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// Copyright 2016 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_info_request.h"
#include <utility>
#include "base/bind.h"
#include "base/message_loop/message_loop.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/time/time.h"
#include "remoting/protocol/ice_config.h"
#include "remoting/signaling/iq_sender.h"
#include "third_party/libjingle_xmpp/xmllite/xmlelement.h"
#include "third_party/libjingle_xmpp/xmpp/constants.h"
#include "third_party/webrtc/base/socketaddress.h"
namespace remoting {
namespace protocol {
const int kRequestTimeoutSeconds = 5;
// Get fresh STUN/Relay configuration every hour.
static const int kJingleInfoUpdatePeriodSeconds = 3600;
JingleInfoRequest::JingleInfoRequest(SignalStrategy* signal_strategy)
: iq_sender_(signal_strategy) {}
JingleInfoRequest::~JingleInfoRequest() {}
void JingleInfoRequest::Send(const OnIceConfigCallback& callback) {
on_ice_config_callback_ = callback;
std::unique_ptr<buzz::XmlElement> iq_body(
new buzz::XmlElement(buzz::QN_JINGLE_INFO_QUERY, true));
request_ = iq_sender_.SendIq(
buzz::STR_GET, buzz::STR_EMPTY, std::move(iq_body),
base::Bind(&JingleInfoRequest::OnResponse, base::Unretained(this)));
if (!request_) {
// If we failed to send IqRequest it means that SignalStrategy is
// disconnected. Notify the caller.
IceConfig config;
on_ice_config_callback_.Run(config);
return;
}
request_->SetTimeout(base::TimeDelta::FromSeconds(kRequestTimeoutSeconds));
}
void JingleInfoRequest::OnResponse(IqRequest* request,
const buzz::XmlElement* stanza) {
IceConfig result;
if (!stanza) {
LOG(WARNING) << "Jingle info request has timed out.";
on_ice_config_callback_.Run(result);
return;
}
const buzz::XmlElement* query =
stanza->FirstNamed(buzz::QN_JINGLE_INFO_QUERY);
if (query == nullptr) {
LOG(WARNING) << "No Jingle info found in Jingle Info query response."
<< stanza->Str();
on_ice_config_callback_.Run(result);
return;
}
const buzz::XmlElement* stun = query->FirstNamed(buzz::QN_JINGLE_INFO_STUN);
if (stun) {
for (const buzz::XmlElement* server =
stun->FirstNamed(buzz::QN_JINGLE_INFO_SERVER);
server != nullptr;
server = server->NextNamed(buzz::QN_JINGLE_INFO_SERVER)) {
std::string host = server->Attr(buzz::QN_JINGLE_INFO_HOST);
std::string port_str = server->Attr(buzz::QN_JINGLE_INFO_UDP);
if (host != buzz::STR_EMPTY && port_str != buzz::STR_EMPTY) {
int port;
if (!base::StringToInt(port_str, &port)) {
LOG(WARNING) << "Unable to parse port in stanza" << stanza->Str();
continue;
}
result.stun_servers.push_back(rtc::SocketAddress(host, port));
}
}
}
const buzz::XmlElement* relay = query->FirstNamed(buzz::QN_JINGLE_INFO_RELAY);
if (relay) {
result.relay_token = relay->TextNamed(buzz::QN_JINGLE_INFO_TOKEN);
for (const buzz::XmlElement* server =
relay->FirstNamed(buzz::QN_JINGLE_INFO_SERVER);
server != nullptr;
server = server->NextNamed(buzz::QN_JINGLE_INFO_SERVER)) {
std::string host = server->Attr(buzz::QN_JINGLE_INFO_HOST);
if (host != buzz::STR_EMPTY)
result.relay_servers.push_back(host);
}
}
result.expiration_time =
base::Time::Now() +
base::TimeDelta::FromSeconds(kJingleInfoUpdatePeriodSeconds);
on_ice_config_callback_.Run(result);
}
} // namespace protocol
} // namespace remoting
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