remoting/signaling/jingle_info_request.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "remoting/signaling/jingle_info_request.h"
   6
   7 #include "base/bind.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "base/stl_util.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/time/time.h"
  12 #include "net/base/net_util.h"
  13 #include "remoting/signaling/iq_sender.h"
  14 #include "third_party/webrtc/base/socketaddress.h"
  15 #include "third_party/webrtc/libjingle/xmllite/xmlelement.h"
  16 #include "third_party/webrtc/libjingle/xmpp/constants.h"
  17
  18 namespace remoting {
  19
  20 const int kRequestTimeoutSeconds = 5;
  21
  22 JingleInfoRequest::JingleInfoRequest(SignalStrategy* signal_strategy)
  23     : iq_sender_(signal_strategy) {
  24 }
  25
  26 JingleInfoRequest::~JingleInfoRequest() {}
  27
  28 void JingleInfoRequest::Send(const OnJingleInfoCallback& callback) {
  29   on_jingle_info_cb_ = callback;
  30   scoped_ptr<buzz::XmlElement> iq_body(
  31       new buzz::XmlElement(buzz::QN_JINGLE_INFO_QUERY, true));
  32   request_ = iq_sender_.SendIq(
  33       buzz::STR_GET, buzz::STR_EMPTY, iq_body.Pass(),
  34       base::Bind(&JingleInfoRequest::OnResponse, base::Unretained(this)));
  35   if (!request_) {
  36     // If we failed to send IqRequest it means that SignalStrategy is
  37     // disconnected. Notify the caller.
  38     std::vector<rtc::SocketAddress> stun_hosts;
  39     std::vector<std::string> relay_hosts;
  40     std::string relay_token;
  41     on_jingle_info_cb_.Run(relay_token, relay_hosts, stun_hosts);
  42     return;
  43   }
  44   request_->SetTimeout(base::TimeDelta::FromSeconds(kRequestTimeoutSeconds));
  45 }
  46
  47 void JingleInfoRequest::OnResponse(IqRequest* request,
  48                                    const buzz::XmlElement* stanza) {
  49   std::vector<rtc::SocketAddress> stun_hosts;
  50   std::vector<std::string> relay_hosts;
  51   std::string relay_token;
  52
  53   if (!stanza) {
  54     LOG(WARNING) << "Jingle info request has timed out.";
  55     on_jingle_info_cb_.Run(relay_token, relay_hosts, stun_hosts);
  56     return;
  57   }
  58
  59   const buzz::XmlElement* query =
  60       stanza->FirstNamed(buzz::QN_JINGLE_INFO_QUERY);
  61   if (query == nullptr) {
  62     LOG(WARNING) << "No Jingle info found in Jingle Info query response."
  63                  << stanza->Str();
  64     on_jingle_info_cb_.Run(relay_token, relay_hosts, stun_hosts);
  65     return;
  66   }
  67
  68   const buzz::XmlElement* stun = query->FirstNamed(buzz::QN_JINGLE_INFO_STUN);
  69   if (stun) {
  70     for (const buzz::XmlElement* server =
  71          stun->FirstNamed(buzz::QN_JINGLE_INFO_SERVER);
  72          server != nullptr;
  73          server = server->NextNamed(buzz::QN_JINGLE_INFO_SERVER)) {
  74       std::string host = server->Attr(buzz::QN_JINGLE_INFO_HOST);
  75       std::string port_str = server->Attr(buzz::QN_JINGLE_INFO_UDP);
  76       if (host != buzz::STR_EMPTY && port_str != buzz::STR_EMPTY) {
  77         int port;
  78         if (!base::StringToInt(port_str, &port)) {
  79           LOG(WARNING) << "Unable to parse port in stanza" << stanza->Str();
  80           continue;
  81         }
  82
  83         stun_hosts.push_back(rtc::SocketAddress(host, port));
  84       }
  85     }
  86   }
  87
  88   const buzz::XmlElement* relay = query->FirstNamed(buzz::QN_JINGLE_INFO_RELAY);
  89   if (relay) {
  90     relay_token = relay->TextNamed(buzz::QN_JINGLE_INFO_TOKEN);
  91     for (const buzz::XmlElement* server =
  92          relay->FirstNamed(buzz::QN_JINGLE_INFO_SERVER);
  93          server != nullptr;
  94          server = server->NextNamed(buzz::QN_JINGLE_INFO_SERVER)) {
  95       std::string host = server->Attr(buzz::QN_JINGLE_INFO_HOST);
  96       if (host != buzz::STR_EMPTY)
  97         relay_hosts.push_back(host);
  98     }
  99   }
 100
 101   on_jingle_info_cb_.Run(relay_token, relay_hosts, stun_hosts);
 102 }
 103
 104 }  // namespace remoting