modules/m_xline.c

   1 /* modules/m_xline.c
   2  *
   3  *  Copyright (C) 2002-2003 Lee Hardy <lee@leeh.co.uk>
   4  *  Copyright (C) 2002-2005 ircd-ratbox development team
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met:
   9  *
  10  * 1.Redistributions of source code must retain the above copyright notice,
  11  *   this list of conditions and the following disclaimer.
  12  * 2.Redistributions in binary form must reproduce the above copyright
  13  *   notice, this list of conditions and the following disclaimer in the
  14  *   documentation and/or other materials provided with the distribution.
  15  * 3.The name of the author may not be used to endorse or promote products
  16  *   derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  21  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * $Id$
  31  */
  32
  33 #include "stdinc.h"
  34 #include "send.h"
  35 #include "channel.h"
  36 #include "client.h"
  37 #include "common.h"
  38 #include "config.h"
  39 #include "class.h"
  40 #include "ircd.h"
  41 #include "numeric.h"
  42 #include "logger.h"
  43 #include "s_serv.h"
  44 #include "whowas.h"
  45 #include "match.h"
  46 #include "hash.h"
  47 #include "msg.h"
  48 #include "parse.h"
  49 #include "modules.h"
  50 #include "s_conf.h"
  51 #include "s_newconf.h"
  52 #include "reject.h"
  53 #include "bandbi.h"
  54 #include "operhash.h"
  55
  56 static int mo_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  57 static int ms_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  58 static int me_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  59 static int mo_unxline(struct Client *client_p, struct Client *source_p, int parc,
  60                       const char *parv[]);
  61 static int ms_unxline(struct Client *client_p, struct Client *source_p, int parc,
  62                       const char *parv[]);
  63 static int me_unxline(struct Client *client_p, struct Client *source_p, int parc,
  64                       const char *parv[]);
  65
  66 struct Message xline_msgtab = {
  67         "XLINE", 0, 0, 0, MFLG_SLOW,
  68         {mg_unreg, mg_not_oper, {ms_xline, 5}, {ms_xline, 5}, {me_xline, 5}, {mo_xline, 3}}
  69 };
  70
  71 struct Message unxline_msgtab = {
  72         "UNXLINE", 0, 0, 0, MFLG_SLOW,
  73         {mg_unreg, mg_not_oper, {ms_unxline, 3}, {ms_unxline, 3}, {me_unxline, 2}, {mo_unxline, 2}}
  74 };
  75
  76 mapi_clist_av1 xline_clist[] = { &xline_msgtab, &unxline_msgtab, NULL };
  77
  78 DECLARE_MODULE_AV1(xline, NULL, NULL, xline_clist, NULL, NULL, "$Revision$");
  79
  80 static int valid_xline(struct Client *, const char *, const char *);
  81 static void apply_xline(struct Client *client_p, const char *name,
  82                         const char *reason, int temp_time);
  83 static void propagate_xline(struct Client *source_p, const char *target,
  84                             int temp_time, const char *name, const char *type, const char *reason);
  85 static void cluster_xline(struct Client *source_p, int temp_time,
  86                           const char *name, const char *reason);
  87
  88 static void handle_remote_xline(struct Client *source_p, int temp_time,
  89                                 const char *name, const char *reason);
  90 static void handle_remote_unxline(struct Client *source_p, const char *name);
  91
  92 static void remove_xline(struct Client *source_p, const char *name);
  93
  94
  95 /* m_xline()
  96  *
  97  * parv[1] - thing to xline
  98  * parv[2] - optional type/reason
  99  * parv[3] - reason
 100  */
 101 static int
 102 mo_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 103 {
 104         struct ConfItem *aconf;
 105         const char *name;
 106         const char *reason;
 107         const char *target_server = NULL;
 108         int temp_time;
 109         int loc = 1;
 110
 111         if(!IsOperXline(source_p))
 112         {
 113                 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "xline");
 114                 return 0;
 115         }
 116
 117         if((temp_time = valid_temp_time(parv[loc])) >= 0)
 118                 loc++;
 119         /* we just set temp_time to -1! */
 120         else
 121                 temp_time = 0;
 122
 123         name = parv[loc];
 124         loc++;
 125
 126         /* XLINE <gecos> ON <server> :<reason> */
 127         if(parc >= loc + 2 && !irccmp(parv[loc], "ON"))
 128         {
 129                 if(!IsOperRemoteBan(source_p))
 130                 {
 131                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 132                                    me.name, source_p->name, "remoteban");
 133                         return 0;
 134                 }
 135
 136                 target_server = parv[loc + 1];
 137                 loc += 2;
 138         }
 139
 140         if(parc <= loc || EmptyString(parv[loc]))
 141         {
 142                 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
 143                            me.name, source_p->name, "XLINE");
 144                 return 0;
 145         }
 146
 147         reason = parv[loc];
 148
 149         if(target_server != NULL)
 150         {
 151                 propagate_xline(source_p, target_server, temp_time, name, "2", reason);
 152
 153                 if(!match(target_server, me.name))
 154                         return 0;
 155         }
 156         else if(rb_dlink_list_length(&cluster_conf_list) > 0)
 157                 cluster_xline(source_p, temp_time, name, reason);
 158
 159         if((aconf = find_xline_mask(name)) != NULL)
 160         {
 161                 sendto_one(source_p, ":%s NOTICE %s :[%s] already X-Lined by [%s] - %s",
 162                            me.name, source_p->name, name, aconf->host, aconf->passwd);
 163                 return 0;
 164         }
 165
 166         if(!valid_xline(source_p, name, reason))
 167                 return 0;
 168
 169         apply_xline(source_p, name, reason, temp_time);
 170
 171         return 0;
 172 }
 173
 174 /* ms_xline()
 175  *
 176  * handles a remote xline
 177  */
 178 static int
 179 ms_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 180 {
 181         /* parv[0]  parv[1]      parv[2]  parv[3]  parv[4]
 182          * oper     target serv  xline    type     reason
 183          */
 184         propagate_xline(source_p, parv[1], 0, parv[2], parv[3], parv[4]);
 185
 186         if(!IsPerson(source_p))
 187                 return 0;
 188
 189         /* destined for me? */
 190         if(!match(parv[1], me.name))
 191                 return 0;
 192
 193         handle_remote_xline(source_p, 0, parv[2], parv[4]);
 194         return 0;
 195 }
 196
 197 static int
 198 me_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 199 {
 200         /* time name type :reason */
 201         if(!IsPerson(source_p))
 202                 return 0;
 203
 204         handle_remote_xline(source_p, atoi(parv[1]), parv[2], parv[4]);
 205         return 0;
 206 }
 207
 208 static void
 209 handle_remote_xline(struct Client *source_p, int temp_time, const char *name, const char *reason)
 210 {
 211         struct ConfItem *aconf;
 212
 213         if(!find_shared_conf(source_p->username, source_p->host,
 214                              source_p->servptr->name,
 215                              (temp_time > 0) ? SHARED_TXLINE : SHARED_PXLINE))
 216                 return;
 217
 218         if(!valid_xline(source_p, name, reason))
 219                 return;
 220
 221         /* already xlined */
 222         if((aconf = find_xline_mask(name)) != NULL)
 223         {
 224                 sendto_one_notice(source_p, ":[%s] already X-Lined by [%s] - %s", name, aconf->host,
 225                                   aconf->passwd);
 226                 return;
 227         }
 228
 229         apply_xline(source_p, name, reason, temp_time);
 230 }
 231
 232 /* valid_xline()
 233  *
 234  * inputs       - client xlining, gecos, reason and whether to warn
 235  * outputs      -
 236  * side effects - checks the xline for validity, erroring if needed
 237  */
 238 static int
 239 valid_xline(struct Client *source_p, const char *gecos, const char *reason)
 240 {
 241         if(EmptyString(reason))
 242         {
 243                 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
 244                            get_id(&me, source_p), get_id(source_p, source_p), "XLINE");
 245                 return 0;
 246         }
 247
 248         if(strchr(reason, ':') != NULL)
 249         {
 250                 sendto_one_notice(source_p, ":Invalid character ':' in comment");
 251                 return 0;
 252         }
 253
 254         if(strchr(reason, '"'))
 255         {
 256                 sendto_one_notice(source_p, ":Invalid character '\"' in comment");
 257                 return 0;
 258         }
 259
 260         if(!valid_wild_card_simple(gecos))
 261         {
 262                 sendto_one_notice(source_p,
 263                                   ":Please include at least %d non-wildcard "
 264                                   "characters with the xline",
 265                                   ConfigFileEntry.min_nonwildcard_simple);
 266                 return 0;
 267         }
 268
 269         return 1;
 270 }
 271
 272 void
 273 apply_xline(struct Client *source_p, const char *name, const char *reason, int temp_time)
 274 {
 275         struct ConfItem *aconf;
 276
 277         aconf = make_conf();
 278         aconf->status = CONF_XLINE;
 279         aconf->created = rb_current_time();
 280         aconf->host = rb_strdup(name);
 281         aconf->passwd = rb_strdup(reason);
 282         collapse(aconf->host);
 283
 284         aconf->info.oper = operhash_add(get_oper_name(source_p));
 285
 286         if(temp_time > 0)
 287         {
 288                 aconf->hold = rb_current_time() + temp_time;
 289
 290                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 291                                        "%s added temporary %d min. X-Line for [%s] [%s]",
 292                                        get_oper_name(source_p), temp_time / 60,
 293                                        aconf->host, reason);
 294                 ilog(L_KLINE, "X %s %d %s %s",
 295                      get_oper_name(source_p), temp_time / 60, name, reason);
 296                 sendto_one_notice(source_p, ":Added temporary %d min. X-Line [%s]",
 297                                   temp_time / 60, aconf->host);
 298         }
 299         else
 300         {
 301                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s added X-Line for [%s] [%s]",
 302                                        get_oper_name(source_p), aconf->host, aconf->passwd);
 303                 sendto_one_notice(source_p, ":Added X-Line for [%s] [%s]",
 304                                   aconf->host, aconf->passwd);
 305
 306                 bandb_add(BANDB_XLINE, source_p, aconf->host, NULL, aconf->passwd, NULL, 0);
 307                 ilog(L_KLINE, "X %s 0 %s %s", get_oper_name(source_p), name, aconf->passwd);
 308         }
 309
 310         rb_dlinkAddAlloc(aconf, &xline_conf_list);
 311         check_xlines();
 312 }
 313
 314 static void
 315 propagate_xline(struct Client *source_p, const char *target,
 316                 int temp_time, const char *name, const char *type, const char *reason)
 317 {
 318         if(!temp_time)
 319         {
 320                 sendto_match_servs(source_p, target, CAP_CLUSTER, NOCAPS,
 321                                    "XLINE %s %s %s :%s", target, name, type, reason);
 322                 sendto_match_servs(source_p, target, CAP_ENCAP, CAP_CLUSTER,
 323                                    "ENCAP %s XLINE %d %s 2 :%s", target, temp_time, name, reason);
 324         }
 325         else
 326                 sendto_match_servs(source_p, target, CAP_ENCAP, NOCAPS,
 327                                    "ENCAP %s XLINE %d %s %s :%s",
 328                                    target, temp_time, name, type, reason);
 329 }
 330
 331 static void
 332 cluster_xline(struct Client *source_p, int temp_time, const char *name, const char *reason)
 333 {
 334         struct remote_conf *shared_p;
 335         rb_dlink_node *ptr;
 336
 337         RB_DLINK_FOREACH(ptr, cluster_conf_list.head)
 338         {
 339                 shared_p = ptr->data;
 340
 341                 /* old protocol cant handle temps, and we dont really want
 342                  * to convert them to perm.. --fl
 343                  */
 344                 if(!temp_time)
 345                 {
 346                         if(!(shared_p->flags & SHARED_PXLINE))
 347                                 continue;
 348
 349                         sendto_match_servs(source_p, shared_p->server, CAP_CLUSTER, NOCAPS,
 350                                            "XLINE %s %s 2 :%s", shared_p->server, name, reason);
 351                         sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, CAP_CLUSTER,
 352                                            "ENCAP %s XLINE 0 %s 2 :%s",
 353                                            shared_p->server, name, reason);
 354                 }
 355                 else if(shared_p->flags & SHARED_TXLINE)
 356                         sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, NOCAPS,
 357                                            "ENCAP %s XLINE %d %s 2 :%s",
 358                                            shared_p->server, temp_time, name, reason);
 359         }
 360 }
 361
 362 /* mo_unxline()
 363  *
 364  * parv[1] - thing to unxline
 365  */
 366 static int
 367 mo_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 368 {
 369         if(!IsOperXline(source_p))
 370         {
 371                 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "xline");
 372                 return 0;
 373         }
 374
 375         if(parc == 4 && !(irccmp(parv[2], "ON")))
 376         {
 377                 if(!IsOperRemoteBan(source_p))
 378                 {
 379                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 380                                    me.name, source_p->name, "remoteban");
 381                         return 0;
 382                 }
 383
 384                 propagate_generic(source_p, "UNXLINE", parv[3], CAP_CLUSTER, "%s", parv[1]);
 385
 386                 if(match(parv[3], me.name) == 0)
 387                         return 0;
 388         }
 389         else if(rb_dlink_list_length(&cluster_conf_list))
 390                 cluster_generic(source_p, "UNXLINE", SHARED_UNXLINE, CAP_CLUSTER, "%s", parv[1]);
 391
 392         remove_xline(source_p, parv[1]);
 393
 394         return 0;
 395 }
 396
 397 /* ms_unxline()
 398  *
 399  * handles a remote unxline
 400  */
 401 static int
 402 ms_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 403 {
 404         /* parv[0]  parv[1]        parv[2]
 405          * oper     target server  gecos
 406          */
 407         propagate_generic(source_p, "UNXLINE", parv[1], CAP_CLUSTER, "%s", parv[2]);
 408
 409         if(!match(parv[1], me.name))
 410                 return 0;
 411
 412         if(!IsPerson(source_p))
 413                 return 0;
 414
 415         handle_remote_unxline(source_p, parv[2]);
 416         return 0;
 417 }
 418
 419 static int
 420 me_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 421 {
 422         /* name */
 423         if(!IsPerson(source_p))
 424                 return 0;
 425
 426         handle_remote_unxline(source_p, parv[1]);
 427         return 0;
 428 }
 429
 430 static void
 431 handle_remote_unxline(struct Client *source_p, const char *name)
 432 {
 433         if(!find_shared_conf(source_p->username, source_p->host,
 434                              source_p->servptr->name, SHARED_UNXLINE))
 435                 return;
 436
 437         remove_xline(source_p, name);
 438
 439         return;
 440 }
 441
 442 static void
 443 remove_xline(struct Client *source_p, const char *name)
 444 {
 445         struct ConfItem *aconf;
 446         rb_dlink_node *ptr;
 447
 448         RB_DLINK_FOREACH(ptr, xline_conf_list.head)
 449         {
 450                 aconf = ptr->data;
 451
 452                 if(!irccmp(aconf->host, name))
 453                 {
 454                         if(!aconf->hold)
 455                         {
 456                                 bandb_del(BANDB_XLINE, aconf->host, NULL);
 457
 458                                 sendto_one_notice(source_p, ":X-Line for [%s] is removed", aconf->host);
 459                                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 460                                                        "%s has removed the X-Line for: [%s]",
 461                                                        get_oper_name(source_p), aconf->host);
 462                                 ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), aconf->host);
 463                         }
 464                         else
 465                         {
 466                                 sendto_one_notice(source_p, ":X-Line for [%s] is removed", name);
 467                                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 468                                                        "%s has removed the temporary X-Line for: [%s]",
 469                                                        get_oper_name(source_p), name);
 470                                 ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), name);
 471                         }
 472
 473                         remove_reject_mask(aconf->host, NULL);
 474                         free_conf(aconf);
 475                         rb_dlinkDestroy(ptr, &xline_conf_list);
 476                         return;
 477                 }
 478         }
 479
 480         sendto_one_notice(source_p, ":No X-Line for %s", name);
 481
 482         return;
 483 }