modules/core/m_kill.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_kill.c: Kills a user.
   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_kill.c 3408 2007-04-14 20:58:56Z jilles $
  25  */
  26
  27 #include "stdinc.h"
  28 #include "client.h"
  29 #include "hash.h"               /* for find_client() */
  30 #include "ircd.h"
  31 #include "numeric.h"
  32 #include "logger.h"
  33 #include "s_serv.h"
  34 #include "s_conf.h"
  35 #include "send.h"
  36 #include "whowas.h"
  37 #include "match.h"
  38 #include "msg.h"
  39 #include "parse.h"
  40 #include "modules.h"
  41 #include "s_newconf.h"
  42
  43 static char buf[BUFSIZE];
  44
  45 static int ms_kill(struct Client *, struct Client *, int, const char **);
  46 static int mo_kill(struct Client *, struct Client *, int, const char **);
  47 static void relay_kill(struct Client *, struct Client *, struct Client *,
  48                        const char *, const char *);
  49
  50 struct Message kill_msgtab = {
  51         "KILL", 0, 0, 0, MFLG_SLOW,
  52         {mg_unreg, mg_not_oper, {ms_kill, 2}, {ms_kill, 2}, mg_ignore, {mo_kill, 2}}
  53 };
  54
  55 mapi_clist_av1 kill_clist[] = { &kill_msgtab, NULL };
  56
  57 DECLARE_MODULE_AV1(kill, NULL, NULL, kill_clist, NULL, NULL, "$Revision: 3408 $");
  58
  59 /*
  60 ** mo_kill
  61 **      parv[1] = kill victim
  62 **      parv[2] = kill path
  63 */
  64 static int
  65 mo_kill(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  66 {
  67         struct Client *target_p;
  68         const char *inpath = client_p->name;
  69         const char *user;
  70         const char *reason;
  71
  72         user = parv[1];
  73
  74         if(!IsOperLocalKill(source_p))
  75         {
  76                 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "local_kill");
  77                 return 0;
  78         }
  79
  80         if(!EmptyString(parv[2]))
  81         {
  82                 char *s;
  83                 s = LOCAL_COPY(parv[2]);
  84                 if(strlen(s) > (size_t) KILLLEN)
  85                         s[KILLLEN] = '\0';
  86                 reason = s;
  87         }
  88         else
  89                 reason = "<No reason given>";
  90
  91         if((target_p = find_named_person(user)) == NULL)
  92         {
  93                 /*
  94                  ** If the user has recently changed nick, automatically
  95                  ** rewrite the KILL for this new nickname--this keeps
  96                  ** servers in synch when nick change and kill collide
  97                  */
  98                 if((target_p = get_history(user, (long) KILLCHASETIMELIMIT)) == NULL)
  99                 {
 100                         if (strchr(user, '.'))
 101                                 sendto_one_numeric(source_p, ERR_CANTKILLSERVER, form_str(ERR_CANTKILLSERVER));
 102                         else
 103                                 sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 104                                                    form_str(ERR_NOSUCHNICK), user);
 105                         return 0;
 106                 }
 107                 sendto_one_notice(source_p, ":KILL changed from %s to %s", user, target_p->name);
 108         }
 109
 110         if(!MyConnect(target_p) && (!IsOperGlobalKill(source_p)))
 111         {
 112                 sendto_one_notice(source_p, ":Nick %s is not on your server "
 113                                             "and you do not have the global_kill flag",
 114                                 target_p->name);
 115                 return 0;
 116         }
 117
 118         if(MyConnect(target_p))
 119                 sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
 120                            source_p->name, source_p->username, source_p->host,
 121                            target_p->name, reason);
 122
 123         /* Do not change the format of this message.  There's no point in changing messages
 124          * that have been around for ever, for no reason.. */
 125         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 126                              "Received KILL message for %s!%s@%s. From %s Path: %s (%s)",
 127                              target_p->name, target_p->username, target_p->orighost,
 128                              source_p->name, me.name, reason);
 129
 130         ilog(L_KILL, "%c %s %s!%s@%s %s %s",
 131              MyConnect(target_p) ? 'L' : 'G', get_oper_name(source_p),
 132              target_p->name, target_p->username, target_p->host, target_p->servptr->name, reason);
 133
 134         /*
 135          ** And pass on the message to other servers. Note, that if KILL
 136          ** was changed, the message has to be sent to all links, also
 137          ** back.
 138          ** Suicide kills are NOT passed on --SRB
 139          */
 140         if(!MyConnect(target_p))
 141         {
 142                 relay_kill(client_p, source_p, target_p, inpath, reason);
 143                 /*
 144                  ** Set FLAGS_KILLED. This prevents exit_one_client from sending
 145                  ** the unnecessary QUIT for this. (This flag should never be
 146                  ** set in any other place)
 147                  */
 148                 target_p->flags |= FLAGS_KILLED;
 149         }
 150
 151         rb_sprintf(buf, "Killed (%s (%s))", source_p->name, reason);
 152
 153         exit_client(client_p, target_p, source_p, buf);
 154
 155         return 0;
 156 }
 157
 158 /*
 159  * ms_kill
 160  *      parv[1] = kill victim
 161  *      parv[2] = kill path and reason
 162  */
 163 static int
 164 ms_kill(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 165 {
 166         struct Client *target_p;
 167         const char *user;
 168         const char *reason;
 169         char default_reason[] = "<No reason given>";
 170         const char *path;
 171         int chasing = 0;
 172
 173         *buf = '\0';
 174
 175         user = parv[1];
 176
 177         if(EmptyString(parv[2]))
 178         {
 179                 reason = default_reason;
 180
 181                 /* hyb6 takes the nick of the killer from the path *sigh* --fl_ */
 182                 path = source_p->name;
 183         }
 184         else
 185         {
 186                 char *s = LOCAL_COPY(parv[2]), *t;
 187                 t = strchr(s, ' ');
 188
 189                 if(t)
 190                 {
 191                         *t = '\0';
 192                         t++;
 193                         reason = t;
 194                 }
 195                 else
 196                         reason = default_reason;
 197
 198                 path = s;
 199         }
 200
 201         if((target_p = find_person(user)) == NULL)
 202         {
 203                 /*
 204                  * If the user has recently changed nick, but only if its
 205                  * not an uid, automatically rewrite the KILL for this new nickname.
 206                  * --this keeps servers in synch when nick change and kill collide
 207                  */
 208                 if(IsDigit(*user) || (!(target_p = get_history(user, (long) KILLCHASETIMELIMIT))))
 209                 {
 210                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 211                                            form_str(ERR_NOSUCHNICK), IsDigit(*user) ? "*" : user);
 212                         return 0;
 213                 }
 214                 sendto_one_notice(source_p, ":KILL changed from %s to %s", user, target_p->name);
 215                 chasing = 1;
 216         }
 217
 218         if(IsServer(target_p) || IsMe(target_p))
 219         {
 220                 sendto_one_numeric(source_p, ERR_CANTKILLSERVER, form_str(ERR_CANTKILLSERVER));
 221                 return 0;
 222         }
 223
 224         if(MyConnect(target_p))
 225         {
 226                 if(IsServer(source_p))
 227                 {
 228                         sendto_one(target_p, ":%s KILL %s :%s",
 229                                    source_p->name, target_p->name, reason);
 230                 }
 231                 else
 232                         sendto_one(target_p, ":%s!%s@%s KILL %s :%s",
 233                                    source_p->name, source_p->username, source_p->host,
 234                                    target_p->name, reason);
 235         }
 236
 237         /* Be warned, this message must be From %s, or it confuses clients
 238          * so dont change it to From: or the case or anything! -- fl -- db */
 239         /* path must contain at least 2 !'s, or bitchx falsely declares it
 240          * local --fl
 241          */
 242         if(IsOper(source_p))    /* send it normally */
 243         {
 244                 sendto_realops_snomask(IsService(source_p) ? SNO_SKILL : SNO_GENERAL, L_ALL,
 245                                      "Received KILL message for %s!%s@%s. From %s Path: %s!%s!%s!%s %s",
 246                                      target_p->name, target_p->username, target_p->orighost, source_p->name,
 247                                      source_p->servptr->name, source_p->host, source_p->username,
 248                                      source_p->name, reason);
 249
 250                 ilog(L_KILL, "%c %s %s!%s@%s %s %s",
 251                      MyConnect(target_p) ? 'O' : 'R', get_oper_name(source_p),
 252                      target_p->name, target_p->username, target_p->host,
 253                      target_p->servptr->name, reason);
 254         }
 255         else
 256         {
 257                 sendto_realops_snomask(SNO_SKILL, L_ALL,
 258                                      "Received KILL message for %s!%s@%s. From %s %s",
 259                                      target_p->name, target_p->username, target_p->orighost,
 260                                      source_p->name, reason);
 261
 262                 ilog(L_KILL, "S %s %s!%s@%s %s %s",
 263                      source_p->name, target_p->name, target_p->username,
 264                      target_p->host, target_p->servptr->name, reason);
 265         }
 266
 267         relay_kill(client_p, source_p, target_p, path, reason);
 268
 269         /* FLAGS_KILLED prevents a quit being sent out */
 270         target_p->flags |= FLAGS_KILLED;
 271
 272         rb_sprintf(buf, "Killed (%s %s)", source_p->name, reason);
 273
 274         exit_client(client_p, target_p, source_p, buf);
 275
 276         return 0;
 277 }
 278
 279 static void
 280 relay_kill(struct Client *one, struct Client *source_p,
 281            struct Client *target_p, const char *inpath, const char *reason)
 282 {
 283         struct Client *client_p;
 284         rb_dlink_node *ptr;
 285         char buffer[BUFSIZE];
 286
 287         if(MyClient(source_p))
 288                 rb_snprintf(buffer, sizeof(buffer),
 289                             "%s!%s!%s!%s (%s)",
 290                             me.name, source_p->host, source_p->username, source_p->name, reason);
 291         else
 292                 rb_snprintf(buffer, sizeof(buffer), "%s %s", inpath, reason);
 293
 294         RB_DLINK_FOREACH(ptr, serv_list.head)
 295         {
 296                 client_p = ptr->data;
 297
 298                 if(!client_p || client_p == one)
 299                         continue;
 300
 301                 sendto_one(client_p, ":%s KILL %s :%s",
 302                            get_id(source_p, client_p), get_id(target_p, client_p), buffer);
 303         }
 304 }