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 #include "stdinc.h"
  26 #include "channel.h"
  27 #include "client.h"
  28 #include "hash.h"
  29 #include "match.h"
  30 #include "ircd.h"
  31 #include "numeric.h"
  32 #include "send.h"
  33 #include "s_newconf.h"
  34 #include "s_conf.h"
  35 #include "s_serv.h"
  36 #include "msg.h"
  37 #include "parse.h"
  38 #include "modules.h"
  39 #include "packet.h"
  40 #include "tgchange.h"
  41 #include "logger.h"
  42 #include "inline/stringops.h"
  43
  44 static const char topic_desc[] =
  45         "Provides the TOPIC command to set, remove, and inspect channel topics";
  46
  47 static void m_topic(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
  48 static void ms_topic(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
  49
  50 struct Message topic_msgtab = {
  51         "TOPIC", 0, 0, 0, 0,
  52         {mg_unreg, {m_topic, 2}, {m_topic, 2}, {ms_topic, 5}, mg_ignore, {m_topic, 2}}
  53 };
  54
  55 mapi_clist_av1 topic_clist[] = { &topic_msgtab, NULL };
  56 DECLARE_MODULE_AV2(topic, NULL, NULL, topic_clist, NULL, NULL, NULL, NULL, topic_desc);
  57
  58 /*
  59  * m_topic
  60  *      parv[1] = channel name
  61  *      parv[2] = new topic, if setting topic
  62  */
  63 static void
  64 m_topic(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  65 {
  66         struct Channel *chptr = NULL;
  67         struct membership *msptr;
  68         char *p = NULL;
  69         const char *name;
  70         int operspy = 0;
  71
  72         if((p = strchr(parv[1], ',')))
  73                 *p = '\0';
  74
  75         name = parv[1];
  76
  77         if(IsOperSpy(source_p) && parv[1][0] == '!')
  78         {
  79                 name++;
  80                 operspy = 1;
  81
  82                 if(EmptyString(name))
  83                 {
  84                         sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
  85                                         me.name, source_p->name, "TOPIC");
  86                         return;
  87                 }
  88         }
  89
  90         if(MyClient(source_p) && !IsFloodDone(source_p))
  91                 flood_endgrace(source_p);
  92
  93         chptr = find_channel(name);
  94
  95         if(chptr == NULL)
  96         {
  97                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
  98                                 form_str(ERR_NOSUCHCHANNEL), name);
  99                 return;
 100         }
 101
 102         /* setting topic */
 103         if(parc > 2)
 104         {
 105                 msptr = find_channel_membership(chptr, source_p);
 106
 107                 if(msptr == NULL)
 108                 {
 109                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 110                                         form_str(ERR_NOTONCHANNEL), name);
 111                         return;
 112                 }
 113
 114                 if(MyClient(source_p) && !is_chanop_voiced(msptr) &&
 115                                 !IsOperGeneral(source_p) &&
 116                                 !add_channel_target(source_p, chptr))
 117                 {
 118                         sendto_one(source_p, form_str(ERR_TARGCHANGE),
 119                                    me.name, source_p->name, chptr->chname);
 120                         return;
 121                 }
 122
 123                 if(((chptr->mode.mode & MODE_TOPICLIMIT) == 0 ||
 124                                         get_channel_access(source_p, chptr, msptr, MODE_ADD, NULL) >= CHFL_CHANOP) &&
 125                                 (!MyClient(source_p) ||
 126                                  can_send(chptr, source_p, msptr)))
 127                 {
 128                         char topic[TOPICLEN + 1];
 129                         char topic_info[USERHOST_REPLYLEN];
 130                         rb_strlcpy(topic, parv[2], sizeof(topic));
 131                         sprintf(topic_info, "%s!%s@%s",
 132                                         source_p->name, source_p->username, source_p->host);
 133
 134                         if (ConfigChannel.strip_topic_colors)
 135                                 strip_colour(topic);
 136
 137                         set_channel_topic(chptr, topic, topic_info, rb_current_time());
 138
 139                         sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
 140                                         ":%s TOPIC %s :%s",
 141                                         use_id(source_p), chptr->chname,
 142                                         chptr->topic == NULL ? "" : chptr->topic);
 143                         sendto_channel_local(source_p, ALL_MEMBERS,
 144                                         chptr, ":%s!%s@%s TOPIC %s :%s",
 145                                         source_p->name, source_p->username,
 146                                         source_p->host, chptr->chname,
 147                                         chptr->topic == NULL ? "" : chptr->topic);
 148                 }
 149                 else
 150                         sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
 151                                         get_id(&me, source_p),
 152                                         get_id(source_p, source_p), name);
 153         }
 154         else if(MyClient(source_p))
 155         {
 156                 if(operspy)
 157                         report_operspy(source_p, "TOPIC", chptr->chname);
 158                 if(!IsMember(source_p, chptr) && SecretChannel(chptr) &&
 159                                 !operspy)
 160                 {
 161                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 162                                         form_str(ERR_NOTONCHANNEL), name);
 163                         return;
 164                 }
 165                 if(chptr->topic == NULL)
 166                         sendto_one(source_p, form_str(RPL_NOTOPIC),
 167                                         me.name, source_p->name, name);
 168                 else
 169                 {
 170                         sendto_one(source_p, form_str(RPL_TOPIC),
 171                                         me.name, source_p->name, chptr->chname, chptr->topic);
 172
 173                         sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
 174                                         me.name, source_p->name, chptr->chname,
 175                                         chptr->topic_info,
 176                                         (unsigned long)chptr->topic_time);
 177                 }
 178         }
 179 }
 180
 181 /*
 182  * ms_topic
 183  *      parv[1] = channel name
 184  *      parv[2] = topic_info
 185  *      parv[3] = topic_info time
 186  *      parv[4] = new channel topic
 187  *
 188  * Let servers always set a topic
 189  */
 190 static void
 191 ms_topic(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 192 {
 193         struct Channel *chptr = NULL;
 194
 195         if((chptr = find_channel(parv[1])) == NULL)
 196                 return;
 197
 198         set_channel_topic(chptr, parv[4], parv[2], atoi(parv[3]));
 199
 200         sendto_channel_local(source_p, ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
 201                              source_p->name, parv[1],
 202                              chptr->topic == NULL ? "" : chptr->topic);
 203 }