1/*
2 * libjingle
3 * Copyright 2011, 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/iqtask.h"
29
30#include "talk/xmpp/xmppclient.h"
31#include "talk/xmpp/constants.h"
32
33namespace buzz {
34
35static const int kDefaultIqTimeoutSecs = 15;
36
37IqTask::IqTask(XmppTaskParentInterface* parent,
38               const std::string& verb,
39               const buzz::Jid& to,
40               buzz::XmlElement* el)
41    : buzz::XmppTask(parent, buzz::XmppEngine::HL_SINGLE),
42      to_(to),
43      stanza_(MakeIq(verb, to_, task_id())) {
44  stanza_->AddElement(el);
45  set_timeout_seconds(kDefaultIqTimeoutSecs);
46}
47
48int IqTask::ProcessStart() {
49  buzz::XmppReturnStatus ret = SendStanza(stanza_.get());
50  // TODO: HandleError(NULL) if SendStanza fails?
51  return (ret == buzz::XMPP_RETURN_OK) ? STATE_RESPONSE : STATE_ERROR;
52}
53
54bool IqTask::HandleStanza(const buzz::XmlElement* stanza) {
55  if (!MatchResponseIq(stanza, to_, task_id()))
56    return false;
57
58  if (stanza->Attr(buzz::QN_TYPE) != buzz::STR_RESULT &&
59      stanza->Attr(buzz::QN_TYPE) != buzz::STR_ERROR) {
60    return false;
61  }
62
63  QueueStanza(stanza);
64  return true;
65}
66
67int IqTask::ProcessResponse() {
68  const buzz::XmlElement* stanza = NextStanza();
69  if (stanza == NULL)
70    return STATE_BLOCKED;
71
72  bool success = (stanza->Attr(buzz::QN_TYPE) == buzz::STR_RESULT);
73  if (success) {
74    HandleResult(stanza);
75  } else {
76    SignalError(this, stanza->FirstNamed(QN_ERROR));
77  }
78  return STATE_DONE;
79}
80
81int IqTask::OnTimeout() {
82  SignalError(this, NULL);
83  return XmppTask::OnTimeout();
84}
85
86}  // namespace buzz
87