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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/mucinviterecvtask.h"
     30 
     31 namespace buzz {
     32 
     33 const char* types[] = {
     34   "unknown",
     35   "audio",
     36   "video",
     37 };
     38 
     39 const char* statuses[] = {
     40   "unknown",
     41   "sendrecv",
     42   "sendonly",
     43   "recvonly",
     44   "inactive",
     45 };
     46 
     47 const char*
     48 AvailableMediaEntry::TypeAsString(type_t type) {
     49   // The values of the constants have been chosen such that this is correct.
     50   return types[type];
     51 }
     52 
     53 const char*
     54 AvailableMediaEntry::StatusAsString(status_t status) {
     55   // The values of the constants have been chosen such that this is correct.
     56   return statuses[status];
     57 }
     58 
     59 int bodytext_to_array_pos(const XmlElement* elem, const char* array[],
     60     int len, int defval = -1) {
     61   if (elem) {
     62     const std::string& body(elem->BodyText());
     63     for (int i = 0; i < len; ++i) {
     64       if (body == array[i]) {
     65         // Found it.
     66         return i;
     67       }
     68     }
     69   }
     70   // If we get here, it's not any value in the array.
     71   return defval;
     72 }
     73 
     74 bool
     75 MucInviteRecvTask::HandleStanza(const XmlElement* stanza) {
     76   // Figuring out that we want to handle this is a lot of the work of
     77   // actually handling it, so we handle it right here instead of queueing it.
     78   const XmlElement* xstanza;
     79   const XmlElement* invite;
     80   if (stanza->Name() != QN_MESSAGE) return false;
     81   xstanza = stanza->FirstNamed(QN_MUC_USER_X);
     82   if (!xstanza) return false;
     83   invite = xstanza->FirstNamed(QN_MUC_USER_INVITE);
     84   if (!invite) return false;
     85   // Else it's an invite and we definitely want to handle it. Parse the
     86   // available-media, if any.
     87   std::vector<AvailableMediaEntry> v;
     88   const XmlElement* avail =
     89     invite->FirstNamed(QN_GOOGLE_MUC_USER_AVAILABLE_MEDIA);
     90   if (avail) {
     91     for (const XmlElement* entry = avail->FirstNamed(QN_GOOGLE_MUC_USER_ENTRY);
     92         entry;
     93         entry = entry->NextNamed(QN_GOOGLE_MUC_USER_ENTRY)) {
     94       AvailableMediaEntry tmp;
     95       // In the interest of debugging, we accept as much valid-looking data
     96       // as we can.
     97       tmp.label = atoi(entry->Attr(QN_LABEL).c_str());
     98       tmp.type = static_cast<AvailableMediaEntry::type_t>(
     99           bodytext_to_array_pos(
    100               entry->FirstNamed(QN_GOOGLE_MUC_USER_TYPE),
    101               types,
    102               sizeof(types)/sizeof(const char*),
    103               AvailableMediaEntry::TYPE_UNKNOWN));
    104       tmp.status = static_cast<AvailableMediaEntry::status_t>(
    105           bodytext_to_array_pos(
    106               entry->FirstNamed(QN_GOOGLE_MUC_USER_STATUS),
    107               statuses,
    108               sizeof(statuses)/sizeof(const char*),
    109               AvailableMediaEntry::STATUS_UNKNOWN));
    110       v.push_back(tmp);
    111     }
    112   }
    113   SignalInviteReceived(Jid(invite->Attr(QN_FROM)), Jid(stanza->Attr(QN_FROM)),
    114       v);
    115   return true;
    116 }
    117 
    118 int
    119 MucInviteRecvTask::ProcessStart() {
    120   // We never queue anything so we are always blocked.
    121   return STATE_BLOCKED;
    122 }
    123 
    124 }
    125