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      1 // Copyright (c) 2012 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/jingle_glue/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 "net/base/net_util.h"
     12 #include "remoting/jingle_glue/iq_sender.h"
     13 #include "third_party/libjingle/source/talk/base/socketaddress.h"
     14 #include "third_party/libjingle/source/talk/xmllite/xmlelement.h"
     15 #include "third_party/libjingle/source/talk/xmpp/constants.h"
     16 
     17 namespace remoting {
     18 
     19 JingleInfoRequest::JingleInfoRequest(SignalStrategy* signal_strategy)
     20     : iq_sender_(signal_strategy) {
     21 }
     22 
     23 JingleInfoRequest::~JingleInfoRequest() {
     24 }
     25 
     26 void JingleInfoRequest::Send(const OnJingleInfoCallback& callback) {
     27   on_jingle_info_cb_ = callback;
     28   scoped_ptr<buzz::XmlElement> iq_body(
     29       new buzz::XmlElement(buzz::QN_JINGLE_INFO_QUERY, true));
     30   request_ = iq_sender_.SendIq(
     31       buzz::STR_GET, buzz::STR_EMPTY, iq_body.Pass(),
     32       base::Bind(&JingleInfoRequest::OnResponse, base::Unretained(this)));
     33 }
     34 
     35 void JingleInfoRequest::OnResponse(IqRequest* request,
     36                                    const buzz::XmlElement* stanza) {
     37   const buzz::XmlElement* query =
     38       stanza->FirstNamed(buzz::QN_JINGLE_INFO_QUERY);
     39   if (query == NULL) {
     40     LOG(WARNING) << "No Jingle info found in Jingle Info query response."
     41                  << stanza->Str();
     42     return;
     43   }
     44 
     45   std::vector<talk_base::SocketAddress> stun_hosts;
     46   const buzz::XmlElement* stun = query->FirstNamed(buzz::QN_JINGLE_INFO_STUN);
     47   if (stun) {
     48     for (const buzz::XmlElement* server =
     49          stun->FirstNamed(buzz::QN_JINGLE_INFO_SERVER);
     50          server != NULL;
     51          server = server->NextNamed(buzz::QN_JINGLE_INFO_SERVER)) {
     52       std::string host = server->Attr(buzz::QN_JINGLE_INFO_HOST);
     53       std::string port_str = server->Attr(buzz::QN_JINGLE_INFO_UDP);
     54       if (host != buzz::STR_EMPTY && port_str != buzz::STR_EMPTY) {
     55         int port;
     56         if (!base::StringToInt(port_str, &port)) {
     57           LOG(WARNING) << "Unable to parse port in stanza" << stanza->Str();
     58           continue;
     59         }
     60 
     61         stun_hosts.push_back(talk_base::SocketAddress(host, port));
     62       }
     63     }
     64   }
     65 
     66   std::vector<std::string> relay_hosts;
     67   std::string relay_token;
     68   const buzz::XmlElement* relay = query->FirstNamed(buzz::QN_JINGLE_INFO_RELAY);
     69   if (relay) {
     70     relay_token = relay->TextNamed(buzz::QN_JINGLE_INFO_TOKEN);
     71     for (const buzz::XmlElement* server =
     72          relay->FirstNamed(buzz::QN_JINGLE_INFO_SERVER);
     73          server != NULL;
     74          server = server->NextNamed(buzz::QN_JINGLE_INFO_SERVER)) {
     75       std::string host = server->Attr(buzz::QN_JINGLE_INFO_HOST);
     76       if (host != buzz::STR_EMPTY)
     77         relay_hosts.push_back(host);
     78     }
     79   }
     80 
     81   on_jingle_info_cb_.Run(relay_token, relay_hosts, stun_hosts);
     82 }
     83 
     84 }  // namespace remoting
     85