modules/core/m_kick.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_kick.c: Kicks 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
  25 #include "stdinc.h"
  26 #include "channel.h"
  27 #include "client.h"
  28 #include "match.h"
  29 #include "ircd.h"
  30 #include "numeric.h"
  31 #include "send.h"
  32 #include "msg.h"
  33 #include "modules.h"
  34 #include "parse.h"
  35 #include "hash.h"
  36 #include "packet.h"
  37 #include "s_serv.h"
  38 #include "hook.h"
  39
  40 static const char kick_desc[] = "Provides the KICK command to remove a user from a channel";
  41
  42 static void m_kick(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
  43 #define mg_kick { m_kick, 3 }
  44
  45 struct Message kick_msgtab = {
  46         "KICK", 0, 0, 0, 0,
  47         {mg_unreg, mg_kick, mg_kick, mg_kick, mg_ignore, mg_kick}
  48 };
  49
  50 mapi_clist_av1 kick_clist[] = { &kick_msgtab, NULL };
  51
  52 DECLARE_MODULE_AV2(kick, NULL, NULL, kick_clist, NULL, NULL, NULL, NULL, kick_desc);
  53
  54 /*
  55 ** m_kick
  56 **      parv[1] = channel
  57 **      parv[2] = client to kick
  58 **      parv[3] = kick comment
  59 */
  60 static void
  61 m_kick(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  62 {
  63         struct membership *msptr;
  64         struct Client *who;
  65         struct Channel *chptr;
  66         int chasing = 0;
  67         char *comment;
  68         const char *name;
  69         char *p = NULL;
  70         const char *user;
  71         static char buf[BUFSIZE];
  72
  73         if(MyClient(source_p) && !IsFloodDone(source_p))
  74                 flood_endgrace(source_p);
  75
  76         *buf = '\0';
  77         if((p = strchr(parv[1], ',')))
  78                 *p = '\0';
  79
  80         name = parv[1];
  81
  82         chptr = find_channel(name);
  83         if(chptr == NULL)
  84         {
  85                 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL), name);
  86                 return;
  87         }
  88
  89         if(!IsServer(source_p))
  90         {
  91                 msptr = find_channel_membership(chptr, source_p);
  92
  93                 if((msptr == NULL) && MyConnect(source_p))
  94                 {
  95                         sendto_one_numeric(source_p, ERR_NOTONCHANNEL,
  96                                            form_str(ERR_NOTONCHANNEL), name);
  97                         return;
  98                 }
  99
 100                 if(get_channel_access(source_p, chptr, msptr, MODE_ADD, NULL) < CHFL_CHANOP)
 101                 {
 102                         if(MyConnect(source_p))
 103                         {
 104                                 sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
 105                                            me.name, source_p->name, name);
 106                                 return;
 107                         }
 108
 109                         /* If its a TS 0 channel, do it the old way */
 110                         if(chptr->channelts == 0)
 111                         {
 112                                 sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
 113                                            get_id(&me, source_p), get_id(source_p, source_p), name);
 114                                 return;
 115                         }
 116                 }
 117
 118         }
 119
 120         if((p = strchr(parv[2], ',')))
 121                 *p = '\0';
 122
 123         user = parv[2];         /* strtoken(&p2, parv[2], ","); */
 124
 125         if(!(who = find_chasing(source_p, user, &chasing)))
 126         {
 127                 return;
 128         }
 129
 130         msptr = find_channel_membership(chptr, who);
 131
 132         if(msptr != NULL)
 133         {
 134                 if(MyClient(source_p) && IsService(who))
 135                 {
 136                         sendto_one(source_p, form_str(ERR_ISCHANSERVICE),
 137                                    me.name, source_p->name, who->name, chptr->chname);
 138                         return;
 139                 }
 140
 141                 if(MyClient(source_p))
 142                 {
 143                         hook_data_channel_approval hookdata;
 144
 145                         hookdata.client = source_p;
 146                         hookdata.chptr = chptr;
 147                         hookdata.msptr = msptr;
 148                         hookdata.target = who;
 149                         hookdata.approved = 1;
 150                         hookdata.dir = MODE_ADD;        /* ensure modules like override speak up */
 151
 152                         call_hook(h_can_kick, &hookdata);
 153
 154                         if (!hookdata.approved)
 155                                 return;
 156                 }
 157
 158                 comment = LOCAL_COPY((EmptyString(parv[3])) ? who->name : parv[3]);
 159                 if(strlen(comment) > (size_t) REASONLEN)
 160                         comment[REASONLEN] = '\0';
 161
 162                 /* jdc
 163                  * - In the case of a server kicking a user (i.e. CLEARCHAN),
 164                  *   the kick should show up as coming from the server which did
 165                  *   the kick.
 166                  * - Personally, flame and I believe that server kicks shouldn't
 167                  *   be sent anyways.  Just waiting for some oper to abuse it...
 168                  */
 169                 if(IsServer(source_p))
 170                         sendto_channel_local(source_p, ALL_MEMBERS, chptr, ":%s KICK %s %s :%s",
 171                                              source_p->name, name, who->name, comment);
 172                 else
 173                         sendto_channel_local(source_p, ALL_MEMBERS, chptr,
 174                                              ":%s!%s@%s KICK %s %s :%s",
 175                                              source_p->name, source_p->username,
 176                                              source_p->host, name, who->name, comment);
 177
 178                 sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
 179                               ":%s KICK %s %s :%s",
 180                               use_id(source_p), chptr->chname, use_id(who), comment);
 181                 remove_user_from_channel(msptr);
 182         }
 183         else if (MyClient(source_p))
 184                 sendto_one_numeric(source_p, ERR_USERNOTINCHANNEL,
 185                                    form_str(ERR_USERNOTINCHANNEL), user, name);
 186 }