modules/m_tb.c

   1 /* modules/m_tb.c
   2  *
   3  *  Copyright (C) 2003 Lee Hardy <lee@leeh.co.uk>
   4  *  Copyright (C) 2003-2005 ircd-ratbox development team
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met:
   9  *
  10  * 1.Redistributions of source code must retain the above copyright notice,
  11  *   this list of conditions and the following disclaimer.
  12  * 2.Redistributions in binary form must reproduce the above copyright
  13  *   notice, this list of conditions and the following disclaimer in the
  14  *   documentation and/or other materials provided with the distribution.
  15  * 3.The name of the author may not be used to endorse or promote products
  16  *   derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  21  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "stdinc.h"
  32 #include "tools.h"
  33 #include "send.h"
  34 #include "channel.h"
  35 #include "client.h"
  36 #include "common.h"
  37 #include "config.h"
  38 #include "ircd.h"
  39 #include "irc_string.h"
  40 #include "s_conf.h"
  41 #include "msg.h"
  42 #include "modules.h"
  43 #include "hash.h"
  44 #include "s_serv.h"
  45
  46 static int ms_tb(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  47
  48 struct Message tb_msgtab = {
  49         "TB", 0, 0, 0, MFLG_SLOW,
  50         {mg_unreg, mg_ignore, mg_ignore, {ms_tb, 4}, mg_ignore, mg_ignore}
  51 };
  52
  53 mapi_clist_av1 tb_clist[] =  { &tb_msgtab, NULL };
  54 DECLARE_MODULE_AV1(tb, NULL, NULL, tb_clist, NULL, NULL, "$Revision: 26 $");
  55
  56 /* m_tb()
  57  *
  58  * parv[1] - channel
  59  * parv[2] - topic ts
  60  * parv[3] - optional topicwho/topic
  61  * parv[4] - topic
  62  */
  63 static int
  64 ms_tb(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  65 {
  66         struct Channel *chptr;
  67         const char *newtopic;
  68         const char *newtopicwho;
  69         time_t newtopicts;
  70         struct Client *fakesource_p;
  71
  72         chptr = find_channel(parv[1]);
  73
  74         if(chptr == NULL)
  75                 return 0;
  76
  77         newtopicts = atol(parv[2]);
  78
  79         /* Hide connecting server on netburst -- jilles */
  80         if (ConfigServerHide.flatten_links && !HasSentEob(source_p))
  81                 fakesource_p = &me;
  82         else
  83                 fakesource_p = source_p;
  84
  85         if(parc == 5)
  86         {
  87                 newtopic = parv[4];
  88                 newtopicwho = parv[3];
  89         }
  90         else
  91         {
  92                 newtopic = parv[3];
  93                 newtopicwho = fakesource_p->name;
  94         }
  95
  96         if (EmptyString(newtopic))
  97                 return 0;
  98
  99         if(chptr->topic == NULL || chptr->topic_time > newtopicts)
 100         {
 101                 /* its possible the topicts is a few seconds out on some
 102                  * servers, due to lag when propagating it, so if theyre the
 103                  * same topic just drop the message --fl
 104                  */
 105                 if(chptr->topic != NULL && strcmp(chptr->topic, newtopic) == 0)
 106                         return 0;
 107
 108                 set_channel_topic(chptr, newtopic, newtopicwho, newtopicts);
 109                 sendto_channel_local(ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
 110                                      fakesource_p->name, chptr->chname, newtopic);
 111                 sendto_server(client_p, chptr, CAP_TB|CAP_TS6, NOCAPS,
 112                               ":%s TB %s %ld %s%s:%s",
 113                               use_id(source_p), chptr->chname, (long) chptr->topic_time,
 114                               ConfigChannel.burst_topicwho ? chptr->topic_info : "",
 115                               ConfigChannel.burst_topicwho ? " " : "", chptr->topic);
 116                 sendto_server(client_p, chptr, CAP_TB, CAP_TS6,
 117                               ":%s TB %s %ld %s%s:%s",
 118                               source_p->name, chptr->chname, (long) chptr->topic_time,
 119                               ConfigChannel.burst_topicwho ? chptr->topic_info : "",
 120                               ConfigChannel.burst_topicwho ? " " : "", chptr->topic);
 121         }
 122
 123         return 0;
 124 }