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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/xmpp/constants.h"
     29 #include "talk/examples/call/friendinvitesendtask.h"
     30 
     31 namespace buzz {
     32 
     33 XmppReturnStatus
     34 FriendInviteSendTask::Send(const Jid& user) {
     35   if (GetState() != STATE_INIT && GetState() != STATE_START)
     36     return XMPP_RETURN_BADSTATE;
     37 
     38   // Need to first add to roster, then subscribe to presence.
     39   XmlElement* iq = new XmlElement(QN_IQ);
     40   iq->AddAttr(QN_TYPE, STR_SET);
     41   XmlElement* query = new XmlElement(QN_ROSTER_QUERY);
     42   XmlElement* item = new XmlElement(QN_ROSTER_ITEM);
     43   item->AddAttr(QN_JID, user.Str());
     44   item->AddAttr(QN_NAME, user.node());
     45   query->AddElement(item);
     46   iq->AddElement(query);
     47   QueueStanza(iq);
     48 
     49   // Subscribe to presence
     50   XmlElement* presence = new XmlElement(QN_PRESENCE);
     51   presence->AddAttr(QN_TO, user.Str());
     52   presence->AddAttr(QN_TYPE, STR_SUBSCRIBE);
     53   XmlElement* invitation = new XmlElement(QN_INVITATION);
     54   invitation->AddAttr(QN_INVITE_MESSAGE,
     55       "I've been using Google Talk and thought you might like to try it out. "
     56       "We can use it to call each other for free over the internet. Here's an "
     57       "invitation to download Google Talk. Give it a try!");
     58   presence->AddElement(invitation);
     59   QueueStanza(presence);
     60 
     61   return XMPP_RETURN_OK;
     62 }
     63 
     64 int
     65 FriendInviteSendTask::ProcessStart() {
     66   const XmlElement* stanza = NextStanza();
     67   if (stanza == NULL)
     68     return STATE_BLOCKED;
     69 
     70   if (SendStanza(stanza) != XMPP_RETURN_OK)
     71     return STATE_ERROR;
     72 
     73   return STATE_START;
     74 }
     75 
     76 }
     77