modules/m_topic.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_topic.c: Sets a channel topic.
   4  *
   5  *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
   6  *  Copyright (C) 1996-2002 Hybrid Development Team
   7  *  Copyright (C) 2002-2005 ircd-ratbox development team
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  22  *  USA
  23  *
  24  *  $Id: m_topic.c 254 2005-09-21 23:35:12Z nenolod $
  25  */
  26
  27 #include "stdinc.h"
  28 #include "tools.h"
  29 #include "channel.h"
  30 #include "client.h"
  31 #include "hash.h"
  32 #include "irc_string.h"
  33 #include "sprintf_irc.h"
  34 #include "ircd.h"
  35 #include "numeric.h"
  36 #include "send.h"
  37 #include "s_conf.h"
  38 #include "s_serv.h"
  39 #include "msg.h"
  40 #include "parse.h"
  41 #include "modules.h"
  42 #include "packet.h"
  43
  44 static int m_topic(struct Client *, struct Client *, int, const char **);
  45 static int ms_topic(struct Client *, struct Client *, int, const char **);
  46
  47 struct Message topic_msgtab = {
  48         "TOPIC", 0, 0, 0, MFLG_SLOW,
  49         {mg_unreg, {m_topic, 2}, {m_topic, 2}, {ms_topic, 5}, mg_ignore, {m_topic, 2}}
  50 };
  51
  52 mapi_clist_av1 topic_clist[] = { &topic_msgtab, NULL };
  53 DECLARE_MODULE_AV1(topic, NULL, NULL, topic_clist, NULL, NULL, "$Revision: 254 $");
  54
  55 /*
  56  * m_topic
  57  *      parv[0] = sender prefix
  58  *      parv[1] = channel name
  59  *      parv[2] = new topic, if setting topic
  60  */
  61 static int
  62 m_topic(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  63 {
  64         struct Channel *chptr = NULL;
  65         struct membership *msptr;
  66         char *p = NULL;
  67
  68         if((p = strchr(parv[1], ',')))
  69                 *p = '\0';
  70
  71         if(MyClient(source_p) && !IsFloodDone(source_p))
  72                 flood_endgrace(source_p);
  73
  74         if(!IsChannelName(parv[1]))
  75         {
  76                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
  77                                    form_str(ERR_NOSUCHCHANNEL), parv[1]);
  78                 return 0;
  79         }
  80
  81         chptr = find_channel(parv[1]);
  82
  83         if(chptr == NULL)
  84         {
  85                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
  86                                 form_str(ERR_NOSUCHCHANNEL), parv[1]);
  87                 return 0;
  88         }
  89
  90         /* setting topic */
  91         if(parc > 2)
  92         {
  93                 msptr = find_channel_membership(chptr, source_p);
  94
  95                 if(msptr == NULL)
  96                 {
  97                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
  98                                         form_str(ERR_NOTONCHANNEL), parv[1]);
  99                         return 0;
 100                 }
 101
 102                 if((chptr->mode.mode & MODE_TOPICLIMIT) == 0 || is_chanop(msptr))
 103                 {
 104                         char topic_info[USERHOST_REPLYLEN];
 105                         ircsprintf(topic_info, "%s!%s@%s",
 106                                         source_p->name, source_p->username, source_p->host);
 107                         set_channel_topic(chptr, parv[2], topic_info, CurrentTime);
 108
 109                         sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
 110                                         ":%s TOPIC %s :%s",
 111                                         use_id(source_p), chptr->chname,
 112                                         chptr->topic == NULL ? "" : chptr->topic);
 113                         sendto_server(client_p, chptr, NOCAPS, CAP_TS6,
 114                                         ":%s TOPIC %s :%s",
 115                                         source_p->name, chptr->chname,
 116                                         chptr->topic == NULL ? "" : chptr->topic);
 117                         sendto_channel_local(ALL_MEMBERS,
 118                                         chptr, ":%s!%s@%s TOPIC %s :%s",
 119                                         source_p->name, source_p->username,
 120                                         source_p->host, chptr->chname,
 121                                         chptr->topic == NULL ? "" : chptr->topic);
 122                 }
 123                 else
 124                         sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
 125                                         me.name, source_p->name, parv[1]);
 126         }
 127         else if(MyClient(source_p))
 128         {
 129                 if(!IsMember(source_p, chptr) && SecretChannel(chptr))
 130                 {
 131                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 132                                         form_str(ERR_NOTONCHANNEL), parv[1]);
 133                         return 0;
 134                 }
 135                 if(chptr->topic == NULL)
 136                         sendto_one(source_p, form_str(RPL_NOTOPIC),
 137                                         me.name, source_p->name, parv[1]);
 138                 else
 139                 {
 140                         sendto_one(source_p, form_str(RPL_TOPIC),
 141                                         me.name, source_p->name, chptr->chname, chptr->topic);
 142
 143                         sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
 144                                         me.name, source_p->name, chptr->chname,
 145                                         chptr->topic_info, chptr->topic_time);
 146                 }
 147         }
 148
 149         return 0;
 150 }
 151
 152 /*
 153  * ms_topic
 154  *      parv[0] = sender prefix
 155  *      parv[1] = channel name
 156  *      parv[2] = topic_info
 157  *      parv[3] = topic_info time
 158  *      parv[4] = new channel topic
 159  *
 160  * Let servers always set a topic
 161  */
 162 static int
 163 ms_topic(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 164 {
 165         struct Channel *chptr = NULL;
 166
 167         if(IsChannelName(parv[1]))
 168         {
 169                 if((chptr = find_channel(parv[1])) == NULL)
 170                         return 0;
 171
 172                 set_channel_topic(chptr, parv[4], parv[2], atoi(parv[3]));
 173
 174                 sendto_channel_local(ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
 175                                      source_p->name, parv[1],
 176                                      chptr->topic == NULL ? "" : chptr->topic);
 177         }
 178
 179         return 0;
 180 }