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      1 /*
      2  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #include "webrtc/libjingle/xmpp/constants.h"
     12 #include "webrtc/libjingle/xmpp/xmppclient.h"
     13 #include "webrtc/libjingle/xmpp/xmppengine.h"
     14 #include "webrtc/libjingle/xmpp/xmpptask.h"
     15 
     16 namespace buzz {
     17 
     18 XmppClientInterface::XmppClientInterface() {
     19 }
     20 
     21 XmppClientInterface::~XmppClientInterface() {
     22 }
     23 
     24 XmppTask::XmppTask(XmppTaskParentInterface* parent,
     25                    XmppEngine::HandlerLevel level)
     26     : XmppTaskBase(parent), stopped_(false) {
     27 #if !defined(NDEBUG)
     28   debug_force_timeout_ = false;
     29 #endif
     30 
     31   id_ = GetClient()->NextId();
     32   GetClient()->AddXmppTask(this, level);
     33   GetClient()->SignalDisconnected.connect(this, &XmppTask::OnDisconnect);
     34 }
     35 
     36 XmppTask::~XmppTask() {
     37   StopImpl();
     38 }
     39 
     40 void XmppTask::StopImpl() {
     41   while (NextStanza() != NULL) {}
     42   if (!stopped_) {
     43     GetClient()->RemoveXmppTask(this);
     44     GetClient()->SignalDisconnected.disconnect(this);
     45     stopped_ = true;
     46   }
     47 }
     48 
     49 XmppReturnStatus XmppTask::SendStanza(const XmlElement* stanza) {
     50   if (stopped_)
     51     return XMPP_RETURN_BADSTATE;
     52   return GetClient()->SendStanza(stanza);
     53 }
     54 
     55 XmppReturnStatus XmppTask::SendStanzaError(const XmlElement* element_original,
     56                                            XmppStanzaError code,
     57                                            const std::string& text) {
     58   if (stopped_)
     59     return XMPP_RETURN_BADSTATE;
     60   return GetClient()->SendStanzaError(element_original, code, text);
     61 }
     62 
     63 void XmppTask::Stop() {
     64   StopImpl();
     65   Task::Stop();
     66 }
     67 
     68 void XmppTask::OnDisconnect() {
     69   Error();
     70 }
     71 
     72 void XmppTask::QueueStanza(const XmlElement* stanza) {
     73 #if !defined(NDEBUG)
     74   if (debug_force_timeout_)
     75     return;
     76 #endif
     77 
     78   stanza_queue_.push_back(new XmlElement(*stanza));
     79   Wake();
     80 }
     81 
     82 const XmlElement* XmppTask::NextStanza() {
     83   XmlElement* result = NULL;
     84   if (!stanza_queue_.empty()) {
     85     result = stanza_queue_.front();
     86     stanza_queue_.pop_front();
     87   }
     88   next_stanza_.reset(result);
     89   return result;
     90 }
     91 
     92 XmlElement* XmppTask::MakeIq(const std::string& type,
     93                              const buzz::Jid& to,
     94                              const std::string& id) {
     95   XmlElement* result = new XmlElement(QN_IQ);
     96   if (!type.empty())
     97     result->AddAttr(QN_TYPE, type);
     98   if (!to.IsEmpty())
     99     result->AddAttr(QN_TO, to.Str());
    100   if (!id.empty())
    101     result->AddAttr(QN_ID, id);
    102   return result;
    103 }
    104 
    105 XmlElement* XmppTask::MakeIqResult(const XmlElement * query) {
    106   XmlElement* result = new XmlElement(QN_IQ);
    107   result->AddAttr(QN_TYPE, STR_RESULT);
    108   if (query->HasAttr(QN_FROM)) {
    109     result->AddAttr(QN_TO, query->Attr(QN_FROM));
    110   }
    111   result->AddAttr(QN_ID, query->Attr(QN_ID));
    112   return result;
    113 }
    114 
    115 bool XmppTask::MatchResponseIq(const XmlElement* stanza,
    116                                const Jid& to,
    117                                const std::string& id) {
    118   if (stanza->Name() != QN_IQ)
    119     return false;
    120 
    121   if (stanza->Attr(QN_ID) != id)
    122     return false;
    123 
    124   return MatchStanzaFrom(stanza, to);
    125 }
    126 
    127 bool XmppTask::MatchStanzaFrom(const XmlElement* stanza,
    128                                const Jid& to) {
    129   Jid from(stanza->Attr(QN_FROM));
    130   if (from == to)
    131     return true;
    132 
    133   // We address the server as "", check if we are doing so here.
    134   if (!to.IsEmpty())
    135     return false;
    136 
    137   // It is legal for the server to identify itself with "domain" or
    138   // "myself@domain"
    139   Jid me = GetClient()->jid();
    140   return (from == Jid(me.domain())) || (from == me.BareJid());
    141 }
    142 
    143 bool XmppTask::MatchRequestIq(const XmlElement* stanza,
    144                               const std::string& type,
    145                               const QName& qn) {
    146   if (stanza->Name() != QN_IQ)
    147     return false;
    148 
    149   if (stanza->Attr(QN_TYPE) != type)
    150     return false;
    151 
    152   if (stanza->FirstNamed(qn) == NULL)
    153     return false;
    154 
    155   return true;
    156 }
    157 
    158 }
    159