modules/core/m_part.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_part.c: Parts a user from a channel.
   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_part.c 20702 2005-08-31 20:59:02Z leeh $
  25  */
  26
  27 #include "stdinc.h"
  28 #include "tools.h"
  29 #include "channel.h"
  30 #include "client.h"
  31 #include "common.h"
  32 #include "hash.h"
  33 #include "irc_string.h"
  34 #include "ircd.h"
  35 #include "numeric.h"
  36 #include "send.h"
  37 #include "s_serv.h"
  38 #include "msg.h"
  39 #include "parse.h"
  40 #include "modules.h"
  41 #include "s_conf.h"
  42 #include "packet.h"
  43
  44 static int m_part(struct Client *, struct Client *, int, const char **);
  45
  46 struct Message part_msgtab = {
  47         "PART", 0, 0, 0, MFLG_SLOW,
  48         {mg_unreg, {m_part, 2}, {m_part, 2}, mg_ignore, mg_ignore, {m_part, 2}}
  49 };
  50
  51 mapi_clist_av1 part_clist[] = { &part_msgtab, NULL };
  52 DECLARE_MODULE_AV1(part, NULL, NULL, part_clist, NULL, NULL, "$Revision: 20702 $");
  53
  54 static void part_one_client(struct Client *client_p,
  55                             struct Client *source_p, char *name, char *reason);
  56
  57
  58 /*
  59 ** m_part
  60 **      parv[0] = sender prefix
  61 **      parv[1] = channel
  62 **      parv[2] = reason
  63 */
  64 static int
  65 m_part(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  66 {
  67         char *p, *name;
  68         char reason[REASONLEN + 1];
  69         char *s = LOCAL_COPY(parv[1]);
  70
  71         reason[0] = '\0';
  72
  73         if(parc > 2)
  74                 strlcpy(reason, parv[2], sizeof(reason));
  75
  76         name = strtoken(&p, s, ",");
  77
  78         /* Finish the flood grace period... */
  79         if(MyClient(source_p) && !IsFloodDone(source_p))
  80                 flood_endgrace(source_p);
  81
  82         while (name)
  83         {
  84                 part_one_client(client_p, source_p, name, reason);
  85                 name = strtoken(&p, NULL, ",");
  86         }
  87         return 0;
  88 }
  89
  90 /*
  91  * part_one_client
  92  *
  93  * inputs       - pointer to server
  94  *              - pointer to source client to remove
  95  *              - char pointer of name of channel to remove from
  96  * output       - none
  97  * side effects - remove ONE client given the channel name
  98  */
  99 static void
 100 part_one_client(struct Client *client_p, struct Client *source_p, char *name, char *reason)
 101 {
 102         struct Channel *chptr;
 103         struct membership *msptr;
 104
 105         if((chptr = find_channel(name)) == NULL)
 106         {
 107                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
 108                                    form_str(ERR_NOSUCHCHANNEL), name);
 109                 return;
 110         }
 111
 112         msptr = find_channel_membership(chptr, source_p);
 113         if(msptr == NULL)
 114         {
 115                 sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
 116                                    form_str(ERR_NOTONCHANNEL), name);
 117                 return;
 118         }
 119
 120         if(MyConnect(source_p) && !IsOper(source_p) && !IsExemptSpambot(source_p))
 121                 check_spambot_warning(source_p, NULL);
 122
 123         /*
 124          *  Remove user from the old channel (if any)
 125          *  only allow /part reasons in -m chans
 126          */
 127         if(reason[0] && (is_chanop(msptr) || !MyConnect(source_p) ||
 128                          ((can_send(chptr, source_p, msptr) > 0 &&
 129                            (source_p->localClient->firsttime + ConfigFileEntry.anti_spam_exit_message_time)
 130                            < CurrentTime))))
 131         {
 132                 sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
 133                                 ":%s PART %s :%s",
 134                                 use_id(source_p), chptr->chname, reason);
 135                 sendto_server(client_p, chptr, NOCAPS, CAP_TS6,
 136                                 ":%s PART %s :%s",
 137                                 source_p->name, chptr->chname, reason);
 138                 sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s",
 139                                         source_p->name, source_p->username,
 140                                         source_p->host, chptr->chname, reason);
 141         }
 142         else
 143         {
 144                 sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
 145                                 ":%s PART %s",
 146                                 use_id(source_p), chptr->chname);
 147                 sendto_server(client_p, chptr, NOCAPS, CAP_TS6,
 148                                 ":%s PART %s",
 149                                 source_p->name, chptr->chname);
 150                 sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s",
 151                                         source_p->name, source_p->username,
 152                                         source_p->host, chptr->chname);
 153         }
 154         remove_user_from_channel(msptr);
 155 }