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  */
  25
  26 #include "stdinc.h"
  27 #include "channel.h"
  28 #include "client.h"
  29 #include "hash.h"
  30 #include "match.h"
  31 #include "ircd.h"
  32 #include "numeric.h"
  33 #include "send.h"
  34 #include "s_newconf.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 #include "tgchange.h"
  42
  43 static int m_topic(struct Client *, struct Client *, int, const char **);
  44 static int ms_topic(struct Client *, struct Client *, int, const char **);
  45
  46 struct Message topic_msgtab = {
  47         "TOPIC", 0, 0, 0, MFLG_SLOW,
  48         {mg_unreg, {m_topic, 2}, {m_topic, 2}, {ms_topic, 5}, mg_ignore, {m_topic, 2}}
  49 };
  50
  51 mapi_clist_av1 topic_clist[] = { &topic_msgtab, NULL };
  52 DECLARE_MODULE_AV1(topic, NULL, NULL, topic_clist, NULL, NULL, "$Revision: 254 $");
  53
  54 /*
  55  * m_topic
  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         const char *name;
  66         int operspy = 0;
  67
  68         if((p = strchr(parv[1], ',')))
  69                 *p = '\0';
  70
  71         name = parv[1];
  72
  73         if(IsOperSpy(source_p) && parv[1][0] == '!')
  74         {
  75                 name++;
  76                 operspy = 1;
  77
  78                 if(EmptyString(name))
  79                 {
  80                         sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
  81                                         me.name, source_p->name, "TOPIC");
  82                         return 0;
  83                 }
  84         }
  85
  86         if(MyClient(source_p) && !IsFloodDone(source_p))
  87                 flood_endgrace(source_p);
  88
  89         if(!IsChannelName(name))
  90         {
  91                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
  92                                    form_str(ERR_NOSUCHCHANNEL), name);
  93                 return 0;
  94         }
  95
  96         chptr = find_channel(name);
  97
  98         if(chptr == NULL)
  99         {
 100                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
 101                                 form_str(ERR_NOSUCHCHANNEL), name);
 102                 return 0;
 103         }
 104
 105         /* setting topic */
 106         if(parc > 2)
 107         {
 108                 char topic_info[USERHOST_REPLYLEN];
 109
 110                 msptr = find_channel_membership(chptr, source_p);
 111
 112                 if(msptr == NULL)
 113                 {
 114                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 115                                         form_str(ERR_NOTONCHANNEL), name);
 116                         return 0;
 117                 }
 118
 119                 if(MyClient(source_p) && !is_chanop_voiced(msptr) &&
 120                                 !IsOper(source_p) &&
 121                                 !add_channel_target(source_p, chptr))
 122                 {
 123                         sendto_one(source_p, form_str(ERR_TARGCHANGE),
 124                                    me.name, source_p->name, chptr->chname);
 125                         return 0;
 126                 }
 127
 128                 if(MyClient(source_p) && (chptr->mode.mode & MODE_TOPICLIMIT) && !is_any_op(msptr))
 129                 {
 130                         if(IsOverride(source_p))
 131                         {
 132                                 sendto_wallops_flags(UMODE_WALLOP, &me,
 133                                                 "%s is overriding TOPIC on [%s]",
 134                                                 get_oper_name(source_p), chptr->chname);
 135                                 sendto_server(NULL, chptr, NOCAPS, NOCAPS,
 136                                                 ":%s WALLOPS :%s is overriding TOPIC on [%s]",
 137                                                 me.name, get_oper_name(source_p), chptr->chname);
 138                         }
 139                         else
 140                         {
 141                                 sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
 142                                                 me.name, source_p->name, parv[1]);
 143                                 return 0;
 144                         }
 145
 146                 }
 147
 148                         if(ConfigChannel.host_in_topic)
 149                                 rb_sprintf(topic_info, "%s!%s@%s",
 150                                                 source_p->name, source_p->username, source_p->host);
 151                         else
 152                                 rb_strlcpy(topic_info, source_p->name, sizeof(topic_info));
 153
 154                         set_channel_topic(chptr, parv[2], topic_info, rb_current_time());
 155
 156                         sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
 157                                         ":%s TOPIC %s :%s",
 158                                         use_id(source_p), chptr->chname,
 159                                         chptr->topic == NULL ? "" : chptr->topic);
 160                         sendto_channel_local(ALL_MEMBERS,
 161                                         chptr, ":%s!%s@%s TOPIC %s :%s",
 162                                         source_p->name, source_p->username,
 163                                         source_p->host, chptr->chname,
 164                                         chptr->topic == NULL ? "" : chptr->topic);
 165
 166         }
 167         else if(MyClient(source_p))
 168         {
 169                 if(operspy)
 170                         report_operspy(source_p, "TOPIC", chptr->chname);
 171                 if(!IsMember(source_p, chptr) && SecretChannel(chptr) &&
 172                                 !operspy)
 173                 {
 174                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 175                                         form_str(ERR_NOTONCHANNEL), name);
 176                         return 0;
 177                 }
 178                 if(chptr->topic == NULL)
 179                         sendto_one(source_p, form_str(RPL_NOTOPIC),
 180                                         me.name, source_p->name, name);
 181                 else
 182                 {
 183                         sendto_one(source_p, form_str(RPL_TOPIC),
 184                                         me.name, source_p->name, chptr->chname, chptr->topic);
 185
 186                         sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
 187                                         me.name, source_p->name, chptr->chname,
 188                                         chptr->topic_info, chptr->topic_time);
 189                 }
 190         }
 191
 192         return 0;
 193 }
 194
 195 /*
 196  * ms_topic
 197  *      parv[1] = channel name
 198  *      parv[2] = topic_info
 199  *      parv[3] = topic_info time
 200  *      parv[4] = new channel topic
 201  *
 202  * Let servers always set a topic
 203  */
 204 static int
 205 ms_topic(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 206 {
 207         struct Channel *chptr = NULL;
 208
 209         if(IsChannelName(parv[1]))
 210         {
 211                 if((chptr = find_channel(parv[1])) == NULL)
 212                         return 0;
 213
 214                 set_channel_topic(chptr, parv[4], parv[2], atoi(parv[3]));
 215
 216                 sendto_channel_local(ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
 217                                      source_p->name, parv[1],
 218                                      chptr->topic == NULL ? "" : chptr->topic);
 219         }
 220
 221         return 0;
 222 }