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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/base/scoped_ptr.h"
     29 #include "talk/xmpp/constants.h"
     30 #include "talk/xmpp/discoitemsquerytask.h"
     31 #include "talk/xmpp/xmpptask.h"
     32 
     33 namespace buzz {
     34 
     35 DiscoItemsQueryTask::DiscoItemsQueryTask(XmppTaskParentInterface* parent,
     36                                          const Jid& to,
     37                                          const std::string& node)
     38     : IqTask(parent, STR_GET, to, MakeRequest(node)) {
     39 }
     40 
     41 XmlElement* DiscoItemsQueryTask::MakeRequest(const std::string& node) {
     42   XmlElement* element = new XmlElement(QN_DISCO_ITEMS_QUERY, true);
     43   if (!node.empty()) {
     44     element->AddAttr(QN_NODE, node);
     45   }
     46   return element;
     47 }
     48 
     49 void DiscoItemsQueryTask::HandleResult(const XmlElement* stanza) {
     50   const XmlElement* query = stanza->FirstNamed(QN_DISCO_ITEMS_QUERY);
     51   if (query) {
     52     std::vector<DiscoItem> items;
     53     for (const buzz::XmlChild* child = query->FirstChild(); child;
     54          child = child->NextChild()) {
     55       DiscoItem item;
     56       const buzz::XmlElement* child_element = child->AsElement();
     57       if (ParseItem(child_element, &item)) {
     58         items.push_back(item);
     59       }
     60     }
     61     SignalResult(items);
     62   } else {
     63     SignalError(this, NULL);
     64   }
     65 }
     66 
     67 bool DiscoItemsQueryTask::ParseItem(const XmlElement* element,
     68                                     DiscoItem* item) {
     69   if (element->HasAttr(QN_JID)) {
     70     return false;
     71   }
     72 
     73   item->jid = element->Attr(QN_JID);
     74   item->name = element->Attr(QN_NAME);
     75   item->node = element->Attr(QN_NODE);
     76   return true;
     77 }
     78 
     79 }  // namespace buzz
     80