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 "channel.h"
  29 #include "client.h"
  30 #include "hash.h"
  31 #include "match.h"
  32 #include "ircd.h"
  33 #include "numeric.h"
  34 #include "send.h"
  35 #include "s_conf.h"
  36 #include "s_serv.h"
  37 #include "msg.h"
  38 #include "parse.h"
  39 #include "modules.h"
  40 #include "packet.h"
  41
  42 static int m_topic(struct Client *, struct Client *, int, const char **);
  43 static int ms_topic(struct Client *, struct Client *, int, const char **);
  44
  45 struct Message topic_msgtab = {
  46         "TOPIC", 0, 0, 0, MFLG_SLOW,
  47         {mg_unreg, {m_topic, 2}, {m_topic, 2}, {ms_topic, 5}, mg_ignore, {m_topic, 2}}
  48 };
  49
  50 mapi_clist_av1 topic_clist[] = { &topic_msgtab, NULL };
  51 DECLARE_MODULE_AV1(topic, NULL, NULL, topic_clist, NULL, NULL, "$Revision: 254 $");
  52
  53 /*
  54  * m_topic
  55  *      parv[0] = sender prefix
  56  *      parv[1] = channel name
  57  *      parv[2] = new topic, if setting topic
  58  */
  59 static int
  60 m_topic(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  61 {
  62         struct Channel *chptr = NULL;
  63         struct membership *msptr;
  64         char *p = NULL;
  65
  66         if((p = strchr(parv[1], ',')))
  67                 *p = '\0';
  68
  69         if(MyClient(source_p) && !IsFloodDone(source_p))
  70                 flood_endgrace(source_p);
  71
  72         if(!IsChannelName(parv[1]))
  73         {
  74                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
  75                                    form_str(ERR_NOSUCHCHANNEL), parv[1]);
  76                 return 0;
  77         }
  78
  79         chptr = find_channel(parv[1]);
  80
  81         if(chptr == NULL)
  82         {
  83                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
  84                                 form_str(ERR_NOSUCHCHANNEL), parv[1]);
  85                 return 0;
  86         }
  87
  88         /* setting topic */
  89         if(parc > 2)
  90         {
  91                 msptr = find_channel_membership(chptr, source_p);
  92
  93                 if(msptr == NULL)
  94                 {
  95                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
  96                                         form_str(ERR_NOTONCHANNEL), parv[1]);
  97                         return 0;
  98                 }
  99
 100                 if((chptr->mode.mode & MODE_TOPICLIMIT) == 0 || is_chanop(msptr))
 101                 {
 102                         char topic_info[USERHOST_REPLYLEN];
 103                         rb_sprintf(topic_info, "%s!%s@%s",
 104                                         source_p->name, source_p->username, source_p->host);
 105                         set_channel_topic(chptr, parv[2], topic_info, rb_current_time());
 106
 107                         sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
 108                                         ":%s TOPIC %s :%s",
 109                                         use_id(source_p), chptr->chname,
 110                                         chptr->topic == NULL ? "" : chptr->topic);
 111                         sendto_channel_local(ALL_MEMBERS,
 112                                         chptr, ":%s!%s@%s TOPIC %s :%s",
 113                                         source_p->name, source_p->username,
 114                                         source_p->host, chptr->chname,
 115                                         chptr->topic == NULL ? "" : chptr->topic);
 116                 }
 117                 else
 118                         sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
 119                                         me.name, source_p->name, parv[1]);
 120         }
 121         else if(MyClient(source_p))
 122         {
 123                 if(!IsMember(source_p, chptr) && SecretChannel(chptr))
 124                 {
 125                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 126                                         form_str(ERR_NOTONCHANNEL), parv[1]);
 127                         return 0;
 128                 }
 129                 if(chptr->topic == NULL)
 130                         sendto_one(source_p, form_str(RPL_NOTOPIC),
 131                                         me.name, source_p->name, parv[1]);
 132                 else
 133                 {
 134                         sendto_one(source_p, form_str(RPL_TOPIC),
 135                                         me.name, source_p->name, chptr->chname, chptr->topic);
 136
 137                         sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
 138                                         me.name, source_p->name, chptr->chname,
 139                                         chptr->topic_info, chptr->topic_time);
 140                 }
 141         }
 142
 143         return 0;
 144 }
 145
 146 /*
 147  * ms_topic
 148  *      parv[0] = sender prefix
 149  *      parv[1] = channel name
 150  *      parv[2] = topic_info
 151  *      parv[3] = topic_info time
 152  *      parv[4] = new channel topic
 153  *
 154  * Let servers always set a topic
 155  */
 156 static int
 157 ms_topic(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 158 {
 159         struct Channel *chptr = NULL;
 160
 161         if(IsChannelName(parv[1]))
 162         {
 163                 if((chptr = find_channel(parv[1])) == NULL)
 164                         return 0;
 165
 166                 set_channel_topic(chptr, parv[4], parv[2], atoi(parv[3]));
 167
 168                 sendto_channel_local(ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
 169                                      source_p->name, parv[1],
 170                                      chptr->topic == NULL ? "" : chptr->topic);
 171         }
 172
 173         return 0;
 174 }