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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 
XmppClientInterface()18 XmppClientInterface::XmppClientInterface() {
19 }
20 
~XmppClientInterface()21 XmppClientInterface::~XmppClientInterface() {
22 }
23 
XmppTask(XmppTaskParentInterface * parent,XmppEngine::HandlerLevel level)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 
~XmppTask()36 XmppTask::~XmppTask() {
37   StopImpl();
38 }
39 
StopImpl()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 
SendStanza(const XmlElement * stanza)49 XmppReturnStatus XmppTask::SendStanza(const XmlElement* stanza) {
50   if (stopped_)
51     return XMPP_RETURN_BADSTATE;
52   return GetClient()->SendStanza(stanza);
53 }
54 
SendStanzaError(const XmlElement * element_original,XmppStanzaError code,const std::string & text)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 
Stop()63 void XmppTask::Stop() {
64   StopImpl();
65   Task::Stop();
66 }
67 
OnDisconnect()68 void XmppTask::OnDisconnect() {
69   Error();
70 }
71 
QueueStanza(const XmlElement * stanza)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 
NextStanza()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 
MakeIq(const std::string & type,const buzz::Jid & to,const std::string & id)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 
MakeIqResult(const XmlElement * query)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 
MatchResponseIq(const XmlElement * stanza,const Jid & to,const std::string & id)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 
MatchStanzaFrom(const XmlElement * stanza,const Jid & to)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 
MatchRequestIq(const XmlElement * stanza,const std::string & type,const QName & qn)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