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
  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[1] = channel name
  56  *      parv[2] = new topic, if setting topic
  57  */
  58 static int
  59 m_topic(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  60 {
  61         struct Channel *chptr = NULL;
  62         struct membership *msptr;
  63         char *p = NULL;
  64         const char *name;
  65         int operspy = 0;
  66
  67         if((p = strchr(parv[1], ',')))
  68                 *p = '\0';
  69
  70         name = parv[1];
  71
  72         if(IsOperSpy(source_p) && parv[1][0] == '!')
  73         {
  74                 name++;
  75                 operspy = 1;
  76
  77                 if(EmptyString(name))
  78                 {
  79                         sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
  80                                         me.name, source_p->name, "TOPIC");
  81                         return 0;
  82                 }
  83         }
  84
  85         if(MyClient(source_p) && !IsFloodDone(source_p))
  86                 flood_endgrace(source_p);
  87
  88         if(!IsChannelName(name))
  89         {
  90                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
  91                                    form_str(ERR_NOSUCHCHANNEL), name);
  92                 return 0;
  93         }
  94
  95         chptr = find_channel(name);
  96
  97         if(chptr == NULL)
  98         {
  99                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
 100                                 form_str(ERR_NOSUCHCHANNEL), name);
 101                 return 0;
 102         }
 103
 104         /* setting topic */
 105         if(parc > 2)
 106         {
 107                 char topic_info[USERHOST_REPLYLEN];
 108
 109                 msptr = find_channel_membership(chptr, source_p);
 110
 111                 if(msptr == NULL)
 112                 {
 113                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 114                                         form_str(ERR_NOTONCHANNEL), name);
 115                         return 0;
 116                 }
 117
 118                 if(MyClient(source_p) && (chptr->mode.mode & MODE_TOPICLIMIT) && !is_any_op(msptr))
 119                 {
 120                         if(IsOverride(source_p))
 121                         {
 122                                 sendto_wallops_flags(UMODE_WALLOP, &me,
 123                                                 "%s is overriding TOPIC on [%s]",
 124                                                 get_oper_name(source_p), chptr->chname);
 125                                 sendto_server(NULL, chptr, NOCAPS, NOCAPS,
 126                                                 ":%s WALLOPS :%s is overriding TOPIC on [%s]",
 127                                                 me.name, get_oper_name(source_p), chptr->chname);
 128                         }
 129                         else
 130                         {
 131                                 sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
 132                                                 me.name, source_p->name, parv[1]);
 133                                 return 0;
 134                         }
 135
 136                 }
 137
 138                         if(ConfigChannel.host_in_topic)
 139                                 rb_sprintf(topic_info, "%s!%s@%s",
 140                                                 source_p->name, source_p->username, source_p->host);
 141                         else
 142                                 rb_strlcpy(topic_info, source_p->name, sizeof(topic_info));
 143
 144                         set_channel_topic(chptr, parv[2], topic_info, rb_current_time());
 145
 146                         sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
 147                                         ":%s TOPIC %s :%s",
 148                                         use_id(source_p), chptr->chname,
 149                                         chptr->topic == NULL ? "" : chptr->topic);
 150                         sendto_channel_local(ALL_MEMBERS,
 151                                         chptr, ":%s!%s@%s TOPIC %s :%s",
 152                                         source_p->name, source_p->username,
 153                                         source_p->host, chptr->chname,
 154                                         chptr->topic == NULL ? "" : chptr->topic);
 155
 156         }
 157         else if(MyClient(source_p))
 158         {
 159                 if(operspy)
 160                         report_operspy(source_p, "TOPIC", chptr->chname);
 161                 if(!IsMember(source_p, chptr) && SecretChannel(chptr) &&
 162                                 !operspy)
 163                 {
 164                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 165                                         form_str(ERR_NOTONCHANNEL), name);
 166                         return 0;
 167                 }
 168                 if(chptr->topic == NULL)
 169                         sendto_one(source_p, form_str(RPL_NOTOPIC),
 170                                         me.name, source_p->name, name);
 171                 else
 172                 {
 173                         sendto_one(source_p, form_str(RPL_TOPIC),
 174                                         me.name, source_p->name, chptr->chname, chptr->topic);
 175
 176                         sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
 177                                         me.name, source_p->name, chptr->chname,
 178                                         chptr->topic_info, chptr->topic_time);
 179                 }
 180         }
 181
 182         return 0;
 183 }
 184
 185 /*
 186  * ms_topic
 187  *      parv[1] = channel name
 188  *      parv[2] = topic_info
 189  *      parv[3] = topic_info time
 190  *      parv[4] = new channel topic
 191  *
 192  * Let servers always set a topic
 193  */
 194 static int
 195 ms_topic(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 196 {
 197         struct Channel *chptr = NULL;
 198
 199         if(IsChannelName(parv[1]))
 200         {
 201                 if((chptr = find_channel(parv[1])) == NULL)
 202                         return 0;
 203
 204                 set_channel_topic(chptr, parv[4], parv[2], atoi(parv[3]));
 205
 206                 sendto_channel_local(ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
 207                                      source_p->name, parv[1],
 208                                      chptr->topic == NULL ? "" : chptr->topic);
 209         }
 210
 211         return 0;
 212 }