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      1 /*
      2  * libjingle
      3  * Copyright 2004--2005, 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/examples/call/discoitemsquerytask.h"
     29 #include "talk/base/scoped_ptr.h"
     30 #include "talk/xmpp/constants.h"
     31 
     32 
     33 namespace buzz {
     34 
     35 namespace {
     36 const int kDiscoItemsTimeout = 60;
     37 } // namespace
     38 
     39 DiscoItemsQueryTask::DiscoItemsQueryTask(Task* parent,
     40                                          const std::string node,
     41                                          const Jid& to)
     42     : XmppTask(parent, XmppEngine::HL_SINGLE), node_(node) {
     43   set_timeout_seconds(kDiscoItemsTimeout);
     44   to_ = to;
     45 }
     46 
     47 int DiscoItemsQueryTask::ProcessStart() {
     48   talk_base::scoped_ptr<XmlElement> get(MakeIq(STR_GET, to_, task_id()));
     49 
     50   XmlElement* element = new XmlElement(QN_DISCO_ITEMS_QUERY, true);
     51   element->AddAttr(QN_NODE, node_);
     52 
     53   get->AddElement(element);
     54 
     55   if (SendStanza(get.get()) != XMPP_RETURN_OK) {
     56     SignalDiscoItemsError(to_, NULL);
     57     return STATE_ERROR;
     58   }
     59 
     60   return STATE_RESPONSE;
     61 }
     62 
     63 int DiscoItemsQueryTask::ProcessResponse() {
     64   const XmlElement* stanza = NextStanza();
     65   if (stanza == NULL)
     66     return STATE_BLOCKED;
     67 
     68   bool success = false;
     69   if (stanza->Attr(QN_TYPE) != STR_ERROR) {
     70     const XmlElement* query = stanza->FirstNamed(QN_DISCO_ITEMS_QUERY);
     71     if (query) {
     72       SignalGotDiscoItems(to_, query);
     73       success = true;
     74     }
     75   }
     76 
     77   if (!success) {
     78     SignalDiscoItemsError(to_, stanza->FirstNamed(QN_ERROR));
     79   }
     80 
     81   return STATE_DONE;
     82 }
     83 
     84 int DiscoItemsQueryTask::OnTimeout() {
     85   SignalDiscoItemsError(to_, NULL);
     86   return XmppTask::OnTimeout();
     87 }
     88 
     89 bool DiscoItemsQueryTask::HandleStanza(const XmlElement* stanza) {
     90   if (!MatchResponseIq(stanza, to_, task_id()))
     91     return false;
     92   QueueStanza(stanza);
     93   return true;
     94 
     95 }
     96 
     97 }
     98