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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 // Fires a disco items query, such as the following example:
     29 //
     30 //      <iq type='get'
     31 //          from='foo (at) gmail.com/asdf'
     32 //          to='bar (at) google.com'
     33 //          id='1234'>
     34 //          <query xmlns=' http://jabber.org/protocol/disco#items'
     35 //                 node='blah '/>
     36 //      </iq>
     37 //
     38 // Sample response:
     39 //
     40 //      <iq type='result'
     41 //          from=' hendriks (at) google.com'
     42 //          to='rsturgell (at) google.com/asdf'
     43 //          id='1234'>
     44 //          <query xmlns=' http://jabber.org/protocol/disco#items '
     45 //                 node='blah'>
     46 //                 <item something='somethingelse'/>
     47 //          </query>
     48 //      </iq>
     49 
     50 
     51 #ifndef _DISCOITEMSQUERYTASK_H_
     52 #define _DISCOITEMSQUERYTASK_H_
     53 
     54 #include "talk/xmpp/xmpptask.h"
     55 
     56 namespace buzz {
     57 
     58 class DiscoItemsQueryTask : public XmppTask {
     59  public:
     60   // TODO: Currently, this only supports one query stanza - we may eventually
     61   // need it to support multiple
     62   DiscoItemsQueryTask(Task* parent, const std::string node, const Jid& to);
     63 
     64   virtual int ProcessStart();
     65   virtual int ProcessResponse();
     66 
     67   // On success, fires a signal with the jid we sent the query to and the inner
     68   // XmlElement
     69   sigslot::signal2<Jid, const XmlElement*> SignalGotDiscoItems;
     70 
     71   // The XmlElement here is the error element under the error response.  If the
     72   // request just timed out then this will be NULL
     73   sigslot::signal2<Jid, const XmlElement*> SignalDiscoItemsError;
     74 
     75  protected:
     76   virtual bool HandleStanza(const XmlElement* stanza);
     77   virtual int OnTimeout();
     78 
     79  private:
     80   // The jid we're querying
     81   Jid to_;
     82   // The name of the node
     83   const std::string node_;
     84 };
     85 
     86 }
     87 
     88 #endif
     89