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 int m_topic(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
  45 static int ms_topic(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
  46
  47 struct Message topic_msgtab = {
  48         "TOPIC", 0, 0, 0, 0,
  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_AV2(topic, NULL, NULL, topic_clist, NULL, NULL, NULL, NULL, NULL);
  54
  55 /*
  56  * m_topic
  57  *      parv[1] = channel name
  58  *      parv[2] = new topic, if setting topic
  59  */
  60 static int
  61 m_topic(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  62 {
  63         struct Channel *chptr = NULL;
  64         struct membership *msptr;
  65         char *p = NULL;
  66         const char *name;
  67         int operspy = 0;
  68
  69         if((p = strchr(parv[1], ',')))
  70                 *p = '\0';
  71
  72         name = parv[1];
  73
  74         if(IsOperSpy(source_p) && parv[1][0] == '!')
  75         {
  76                 name++;
  77                 operspy = 1;
  78
  79                 if(EmptyString(name))
  80                 {
  81                         sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
  82                                         me.name, source_p->name, "TOPIC");
  83                         return 0;
  84                 }
  85         }
  86
  87         if(MyClient(source_p) && !IsFloodDone(source_p))
  88                 flood_endgrace(source_p);
  89
  90         chptr = find_channel(name);
  91
  92         if(chptr == NULL)
  93         {
  94                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
  95                                 form_str(ERR_NOSUCHCHANNEL), name);
  96                 return 0;
  97         }
  98
  99         /* setting topic */
 100         if(parc > 2)
 101         {
 102                 msptr = find_channel_membership(chptr, source_p);
 103
 104                 if(msptr == NULL)
 105                 {
 106                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 107                                         form_str(ERR_NOTONCHANNEL), name);
 108                         return 0;
 109                 }
 110
 111                 if(MyClient(source_p) && !is_chanop_voiced(msptr) &&
 112                                 !IsOper(source_p) &&
 113                                 !add_channel_target(source_p, chptr))
 114                 {
 115                         sendto_one(source_p, form_str(ERR_TARGCHANGE),
 116                                    me.name, source_p->name, chptr->chname);
 117                         return 0;
 118                 }
 119
 120                 if(((chptr->mode.mode & MODE_TOPICLIMIT) == 0 ||
 121                                         get_channel_access(source_p, chptr, msptr, MODE_ADD, NULL) >= CHFL_CHANOP) &&
 122                                 (!MyClient(source_p) ||
 123                                  can_send(chptr, source_p, msptr)))
 124                 {
 125                         char topic[TOPICLEN + 1];
 126                         char topic_info[USERHOST_REPLYLEN];
 127                         rb_strlcpy(topic, parv[2], sizeof(topic));
 128                         sprintf(topic_info, "%s!%s@%s",
 129                                         source_p->name, source_p->username, source_p->host);
 130
 131                         if (ConfigChannel.strip_topic_colors)
 132                                 strip_colour(topic);
 133
 134                         set_channel_topic(chptr, topic, topic_info, rb_current_time());
 135
 136                         sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
 137                                         ":%s TOPIC %s :%s",
 138                                         use_id(source_p), chptr->chname,
 139                                         chptr->topic == NULL ? "" : chptr->topic);
 140                         sendto_channel_local(ALL_MEMBERS,
 141                                         chptr, ":%s!%s@%s TOPIC %s :%s",
 142                                         source_p->name, source_p->username,
 143                                         source_p->host, chptr->chname,
 144                                         chptr->topic == NULL ? "" : chptr->topic);
 145                 }
 146                 else
 147                         sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
 148                                         get_id(&me, source_p),
 149                                         get_id(source_p, source_p), name);
 150         }
 151         else if(MyClient(source_p))
 152         {
 153                 if(operspy)
 154                         report_operspy(source_p, "TOPIC", chptr->chname);
 155                 if(!IsMember(source_p, chptr) && SecretChannel(chptr) &&
 156                                 !operspy)
 157                 {
 158                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 159                                         form_str(ERR_NOTONCHANNEL), name);
 160                         return 0;
 161                 }
 162                 if(chptr->topic == NULL)
 163                         sendto_one(source_p, form_str(RPL_NOTOPIC),
 164                                         me.name, source_p->name, name);
 165                 else
 166                 {
 167                         sendto_one(source_p, form_str(RPL_TOPIC),
 168                                         me.name, source_p->name, chptr->chname, chptr->topic);
 169
 170                         sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
 171                                         me.name, source_p->name, chptr->chname,
 172                                         chptr->topic_info,
 173                                         (unsigned long)chptr->topic_time);
 174                 }
 175         }
 176
 177         return 0;
 178 }
 179
 180 /*
 181  * ms_topic
 182  *      parv[1] = channel name
 183  *      parv[2] = topic_info
 184  *      parv[3] = topic_info time
 185  *      parv[4] = new channel topic
 186  *
 187  * Let servers always set a topic
 188  */
 189 static int
 190 ms_topic(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 191 {
 192         struct Channel *chptr = NULL;
 193
 194         if((chptr = find_channel(parv[1])) == NULL)
 195                 return 0;
 196
 197         set_channel_topic(chptr, parv[4], parv[2], atoi(parv[3]));
 198
 199         sendto_channel_local(ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
 200                              source_p->name, parv[1],
 201                              chptr->topic == NULL ? "" : chptr->topic);
 202
 203         return 0;
 204 }