1/*
2 * libjingle
3 * Copyright 2004--2006, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *  1. Redistributions of source code must retain the above copyright notice,
9 *     this list of conditions and the following disclaimer.
10 *  2. Redistributions in binary form must reproduce the above copyright notice,
11 *     this list of conditions and the following disclaimer in the documentation
12 *     and/or other materials provided with the distribution.
13 *  3. The name of the author may not be used to endorse or promote products
14 *     derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include "talk/xmpp/xmpptask.h"
29#include "talk/xmpp/xmppclient.h"
30#include "talk/xmpp/xmppengine.h"
31#include "talk/xmpp/constants.h"
32
33namespace buzz {
34
35XmppClientInterface::XmppClientInterface() {
36}
37
38XmppClientInterface::~XmppClientInterface() {
39}
40
41XmppTask::XmppTask(XmppTaskParentInterface* parent,
42                   XmppEngine::HandlerLevel level)
43    : XmppTaskBase(parent), stopped_(false) {
44#ifdef _DEBUG
45  debug_force_timeout_ = false;
46#endif
47
48  id_ = GetClient()->NextId();
49  GetClient()->AddXmppTask(this, level);
50  GetClient()->SignalDisconnected.connect(this, &XmppTask::OnDisconnect);
51}
52
53XmppTask::~XmppTask() {
54  StopImpl();
55}
56
57void XmppTask::StopImpl() {
58  while (NextStanza() != NULL) {}
59  if (!stopped_) {
60    GetClient()->RemoveXmppTask(this);
61    GetClient()->SignalDisconnected.disconnect(this);
62    stopped_ = true;
63  }
64}
65
66XmppReturnStatus XmppTask::SendStanza(const XmlElement* stanza) {
67  if (stopped_)
68    return XMPP_RETURN_BADSTATE;
69  return GetClient()->SendStanza(stanza);
70}
71
72XmppReturnStatus XmppTask::SendStanzaError(const XmlElement* element_original,
73                                           XmppStanzaError code,
74                                           const std::string& text) {
75  if (stopped_)
76    return XMPP_RETURN_BADSTATE;
77  return GetClient()->SendStanzaError(element_original, code, text);
78}
79
80void XmppTask::Stop() {
81  StopImpl();
82  Task::Stop();
83}
84
85void XmppTask::OnDisconnect() {
86  Error();
87}
88
89void XmppTask::QueueStanza(const XmlElement* stanza) {
90#ifdef _DEBUG
91  if (debug_force_timeout_)
92    return;
93#endif
94
95  stanza_queue_.push_back(new XmlElement(*stanza));
96  Wake();
97}
98
99const XmlElement* XmppTask::NextStanza() {
100  XmlElement* result = NULL;
101  if (!stanza_queue_.empty()) {
102    result = stanza_queue_.front();
103    stanza_queue_.pop_front();
104  }
105  next_stanza_.reset(result);
106  return result;
107}
108
109XmlElement* XmppTask::MakeIq(const std::string& type,
110                             const buzz::Jid& to,
111                             const std::string& id) {
112  XmlElement* result = new XmlElement(QN_IQ);
113  if (!type.empty())
114    result->AddAttr(QN_TYPE, type);
115  if (!to.IsEmpty())
116    result->AddAttr(QN_TO, to.Str());
117  if (!id.empty())
118    result->AddAttr(QN_ID, id);
119  return result;
120}
121
122XmlElement* XmppTask::MakeIqResult(const XmlElement * query) {
123  XmlElement* result = new XmlElement(QN_IQ);
124  result->AddAttr(QN_TYPE, STR_RESULT);
125  if (query->HasAttr(QN_FROM)) {
126    result->AddAttr(QN_TO, query->Attr(QN_FROM));
127  }
128  result->AddAttr(QN_ID, query->Attr(QN_ID));
129  return result;
130}
131
132bool XmppTask::MatchResponseIq(const XmlElement* stanza,
133                               const Jid& to,
134                               const std::string& id) {
135  if (stanza->Name() != QN_IQ)
136    return false;
137
138  if (stanza->Attr(QN_ID) != id)
139    return false;
140
141  return MatchStanzaFrom(stanza, to);
142}
143
144bool XmppTask::MatchStanzaFrom(const XmlElement* stanza,
145                               const Jid& to) {
146  Jid from(stanza->Attr(QN_FROM));
147  if (from == to)
148    return true;
149
150  // We address the server as "", check if we are doing so here.
151  if (!to.IsEmpty())
152    return false;
153
154  // It is legal for the server to identify itself with "domain" or
155  // "myself@domain"
156  Jid me = GetClient()->jid();
157  return (from == Jid(me.domain())) || (from == me.BareJid());
158}
159
160bool XmppTask::MatchRequestIq(const XmlElement* stanza,
161                              const std::string& type,
162                              const QName& qn) {
163  if (stanza->Name() != QN_IQ)
164    return false;
165
166  if (stanza->Attr(QN_TYPE) != type)
167    return false;
168
169  if (stanza->FirstNamed(qn) == NULL)
170    return false;
171
172  return true;
173}
174
175}
176