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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/examples/call/voicemailjidrequester.h"
     30 #include "talk/base/scoped_ptr.h"
     31 #include "talk/xmpp/constants.h"
     32 
     33 namespace buzz {
     34 
     35 VoicemailJidRequester::VoicemailJidRequester(talk_base::Task* parent,
     36                                              const Jid& their_jid,
     37                                              const Jid& my_jid) : Task(parent),
     38                                              their_jid_(their_jid),
     39                                              my_jid_(my_jid),
     40                                              done_with_query_(false) {
     41   parent_ = parent;
     42 }
     43 
     44 int VoicemailJidRequester::ProcessStart() {
     45   // Start first query to node='voicemail'
     46   DiscoItemsQueryTask* disco_items_task = new DiscoItemsQueryTask(this,
     47       STR_VOICEMAIL, their_jid_.BareJid());
     48   disco_items_task->SignalGotDiscoItems.connect(this,
     49       &VoicemailJidRequester::OnFirstVoicemailJidSuccess);
     50   disco_items_task->SignalDiscoItemsError.connect(this,
     51       &VoicemailJidRequester::OnFirstVoicemailJidError);
     52   disco_items_task->Start();
     53   return STATE_BLOCKED;
     54 }
     55 
     56 void VoicemailJidRequester::OnFirstVoicemailJidError(buzz::Jid jid,
     57     const XmlElement* xml_element) {
     58   // First query gave us an error - try second query to node='outgoingvoicemail'
     59   // and send it to your own jid
     60   StartSecondQuery();
     61 }
     62 
     63 void VoicemailJidRequester::OnFirstVoicemailJidSuccess(buzz::Jid jid,
     64     const XmlElement* xml_element) {
     65   // Process the XML and fire the appropriate signals.  If the xml was valid,
     66   // then we're done with queries.  If it wasn't valid, then start the second
     67   // query.
     68   bool valid_xml = ProcessVoicemailXml(xml_element);
     69   if (valid_xml) {
     70     done_with_query_ = true;
     71     Wake();
     72   } else {
     73     StartSecondQuery();
     74   }
     75 }
     76 
     77 void VoicemailJidRequester::OnSecondVoicemailJidError(buzz::Jid jid,
     78     const XmlElement* xml_element) {
     79   SignalVoicemailJidError(their_jid_);
     80   done_with_query_ = true;
     81   Wake();
     82 }
     83 
     84 void VoicemailJidRequester::OnSecondVoicemailJidSuccess(buzz::Jid jid,
     85     const XmlElement* xml_element) {
     86   // Whether this is good xml or bad, we're still done with the query
     87   bool valid_xml = ProcessVoicemailXml(xml_element);
     88   if (!valid_xml) {
     89     SignalVoicemailJidError(their_jid_);
     90   }
     91   done_with_query_ = true;
     92   Wake();
     93 }
     94 
     95 
     96 void VoicemailJidRequester::StartSecondQuery() {
     97   // Send a query to your own jid to get the voicemail jid
     98   DiscoItemsQueryTask* disco_items_task = new DiscoItemsQueryTask(this,
     99       STR_OUTGOINGVOICEMAIL, my_jid_.BareJid());
    100   disco_items_task->SignalGotDiscoItems.connect(this,
    101       &VoicemailJidRequester::OnSecondVoicemailJidSuccess);
    102   disco_items_task->SignalDiscoItemsError.connect(this,
    103       &VoicemailJidRequester::OnSecondVoicemailJidError);
    104   disco_items_task->Start();
    105 }
    106 
    107 int VoicemailJidRequester::Process(int state) {
    108   if (done_with_query_) {
    109     return STATE_DONE;
    110   } else {
    111     return talk_base::Task::Process(state);
    112   }
    113 }
    114 
    115 bool VoicemailJidRequester::ProcessVoicemailXml(const XmlElement* xml_element) {
    116   if (!xml_element) {
    117     return false;
    118   }
    119   const std::string& node_name = xml_element->Attr(QN_NODE);
    120   // Verify that it's one of the two nodes - we don't really care which one
    121   if (node_name != "voicemail" &&
    122       node_name != "outgoingvoicemail") {
    123     return false;
    124   }
    125 
    126   const XmlElement* item = xml_element->FirstNamed(QN_DISCO_ITEM);
    127   if (item) {
    128     const std::string& jid_str = item->Attr(QN_JID);
    129     buzz::Jid voicemail_jid(jid_str);
    130     SignalGotVoicemailJid(their_jid_, voicemail_jid);
    131     return true;
    132   }
    133   return false;
    134 }
    135 }
    136