modules/m_resv.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_resv.c: Reserves(jupes) a nickname or channel.
   4  *
   5  *  Copyright (C) 2001-2002 Hybrid Development Team
   6  *  Copyright (C) 2002-2005 ircd-ratbox development team
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  21  *  USA
  22  *
  23  *  $Id$
  24  */
  25
  26 #include "stdinc.h"
  27 #include "client.h"
  28 #include "channel.h"
  29 #include "ircd.h"
  30 #include "numeric.h"
  31 #include "s_serv.h"
  32 #include "send.h"
  33 #include "msg.h"
  34 #include "parse.h"
  35 #include "modules.h"
  36 #include "s_conf.h"
  37 #include "s_newconf.h"
  38 #include "hash.h"
  39 #include "logger.h"
  40 #include "bandbi.h"
  41 #include "operhash.h"
  42
  43 static int mo_resv(struct Client *, struct Client *, int, const char **);
  44 static int ms_resv(struct Client *, struct Client *, int, const char **);
  45 static int me_resv(struct Client *, struct Client *, int, const char **);
  46 static int mo_unresv(struct Client *, struct Client *, int, const char **);
  47 static int ms_unresv(struct Client *, struct Client *, int, const char **);
  48 static int me_unresv(struct Client *, struct Client *, int, const char **);
  49
  50 struct Message resv_msgtab = {
  51         "RESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  52         {mg_ignore, mg_not_oper, {ms_resv, 4}, {ms_resv, 4}, {me_resv, 5}, {mo_resv, 3}}
  53 };
  54
  55 struct Message unresv_msgtab = {
  56         "UNRESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  57         {mg_ignore, mg_not_oper, {ms_unresv, 3}, {ms_unresv, 3}, {me_unresv, 2}, {mo_unresv, 2}}
  58 };
  59
  60 mapi_clist_av1 resv_clist[] = { &resv_msgtab, &unresv_msgtab, NULL };
  61
  62 DECLARE_MODULE_AV1(resv, NULL, NULL, resv_clist, NULL, NULL, "$Revision$");
  63
  64 static void parse_resv(struct Client *source_p, const char *name,
  65                        const char *reason, int temp_time);
  66 static void propagate_resv(struct Client *source_p, const char *target,
  67                            int temp_time, const char *name, const char *reason);
  68 static void cluster_resv(struct Client *source_p, int temp_time,
  69                          const char *name, const char *reason);
  70
  71 static void handle_remote_unresv(struct Client *source_p, const char *name);
  72 static void remove_resv(struct Client *source_p, const char *name);
  73 static void resv_chan_forcepart(const char *name, const char *reason, int temp_time);
  74
  75 /*
  76  * mo_resv()
  77  *      parv[0] = sender prefix
  78  *      parv[1] = channel/nick to forbid
  79  *      parv[2] = reason
  80  */
  81 static int
  82 mo_resv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  83 {
  84         const char *name;
  85         const char *reason;
  86         const char *target_server = NULL;
  87         int temp_time;
  88         int loc = 1;
  89
  90         if(!IsOperResv(source_p))
  91         {
  92                 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "resv");
  93                 return 0;
  94         }
  95
  96         /* RESV [time] <name> [ON <server>] :<reason> */
  97
  98         if((temp_time = valid_temp_time(parv[loc])) >= 0)
  99                 loc++;
 100         /* we just set temp_time to -1! */
 101         else
 102                 temp_time = 0;
 103
 104         name = parv[loc];
 105         loc++;
 106
 107         if((parc >= loc + 2) && (irccmp(parv[loc], "ON") == 0))
 108         {
 109                 if(!IsOperRemoteBan(source_p))
 110                 {
 111                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 112                                    me.name, source_p->name, "remoteban");
 113                         return 0;
 114                 }
 115
 116                 target_server = parv[loc + 1];
 117                 loc += 2;
 118         }
 119
 120         if(parc <= loc || EmptyString(parv[loc]))
 121         {
 122                 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), me.name, source_p->name, "RESV");
 123                 return 0;
 124         }
 125
 126         reason = parv[loc];
 127
 128         /* remote resv.. */
 129         if(target_server)
 130         {
 131                 propagate_resv(source_p, target_server, temp_time, name, reason);
 132
 133                 if(match(target_server, me.name) == 0)
 134                         return 0;
 135         }
 136         else if(rb_dlink_list_length(&cluster_conf_list) > 0)
 137                 cluster_resv(source_p, temp_time, name, reason);
 138
 139         parse_resv(source_p, name, reason, temp_time);
 140
 141         return 0;
 142 }
 143
 144 /* ms_resv()
 145  *     parv[0] = sender prefix
 146  *     parv[1] = target server
 147  *     parv[2] = channel/nick to forbid
 148  *     parv[3] = reason
 149  */
 150 static int
 151 ms_resv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 152 {
 153         /* parv[0]  parv[1]        parv[2]  parv[3]
 154          * oper     target server  resv     reason
 155          */
 156         propagate_resv(source_p, parv[1], 0, parv[2], parv[3]);
 157
 158         if(!match(parv[1], me.name))
 159                 return 0;
 160
 161         if(!IsPerson(source_p))
 162                 return 0;
 163
 164         parse_resv(source_p, parv[2], parv[3], 0);
 165         return 0;
 166 }
 167
 168 static int
 169 me_resv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 170 {
 171         /* time name 0 :reason */
 172         if(!IsPerson(source_p))
 173                 return 0;
 174
 175         parse_resv(source_p, parv[2], parv[4], atoi(parv[1]));
 176         return 0;
 177 }
 178
 179 /* parse_resv()
 180  *
 181  * inputs       - source_p if error messages wanted
 182  *              - thing to resv
 183  *              - reason for resv
 184  * outputs      -
 185  * side effects - will parse the resv and create it if valid
 186  */
 187 static void
 188 parse_resv(struct Client *source_p, const char *name, const char *reason, int temp_time)
 189 {
 190         struct ConfItem *aconf;
 191
 192         if(!MyClient(source_p) &&
 193            !find_shared_conf(source_p->username, source_p->host,
 194                              source_p->servptr->name,
 195                              (temp_time > 0) ? SHARED_TRESV : SHARED_PRESV))
 196                 return;
 197
 198         if(IsChannelName(name))
 199         {
 200                 if(hash_find_resv(name))
 201                 {
 202                         sendto_one_notice(source_p,
 203                                           ":A RESV has already been placed on channel: %s", name);
 204                         return;
 205                 }
 206
 207                 if(strlen(name) > CHANNELLEN)
 208                 {
 209                         sendto_one_notice(source_p, ":Invalid RESV length: %s", name);
 210                         return;
 211                 }
 212
 213                 if(strchr(reason, '"'))
 214                 {
 215                         sendto_one_notice(source_p, ":Invalid character '\"' in comment");
 216                         return;
 217                 }
 218
 219                 aconf = make_conf();
 220                 aconf->status = CONF_RESV_CHANNEL;
 221                 aconf->port = 0;
 222                 aconf->created = rb_current_time();
 223                 aconf->host = rb_strdup(name);
 224                 aconf->passwd = rb_strdup(reason);
 225                 aconf->info.oper = operhash_add(get_oper_name(source_p));
 226                 add_to_resv_hash(aconf->host, aconf);
 227                 resv_chan_forcepart(aconf->host, aconf->passwd, temp_time);
 228
 229                 if(temp_time > 0)
 230                 {
 231                         aconf->hold = rb_current_time() + temp_time;
 232
 233                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 234                                                "%s added temporary %d min. RESV for [%s] [%s]",
 235                                                get_oper_name(source_p), temp_time / 60,
 236                                                name, reason);
 237                         ilog(L_KLINE, "R %s %d %s %s",
 238                              get_oper_name(source_p), temp_time / 60, name, reason);
 239                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 240                                           temp_time / 60, name);
 241                 }
 242                 else
 243                 {
 244                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 245                                                "%s added RESV for [%s] [%s]",
 246                                                get_oper_name(source_p), name, reason);
 247                         ilog(L_KLINE, "R %s 0 %s %s",
 248                              get_oper_name(source_p), name, reason);
 249                         sendto_one_notice(source_p, ":Added RESV [%s]", name);
 250
 251                         bandb_add(BANDB_RESV, source_p, aconf->host, NULL, aconf->passwd, NULL, 0);
 252                 }
 253         }
 254         else if(clean_resv_nick(name))
 255         {
 256                 if(strlen(name) > NICKLEN * 2)
 257                 {
 258                         sendto_one_notice(source_p, ":Invalid RESV length: %s", name);
 259                         return;
 260                 }
 261
 262                 if(strchr(reason, '"'))
 263                 {
 264                         sendto_one_notice(source_p, ":Invalid character '\"' in comment");
 265                         return;
 266                 }
 267
 268                 if(!valid_wild_card_simple(name))
 269                 {
 270                         sendto_one_notice(source_p,
 271                                           ":Please include at least %d non-wildcard "
 272                                           "characters with the resv",
 273                                           ConfigFileEntry.min_nonwildcard_simple);
 274                         return;
 275                 }
 276
 277                 if(find_nick_resv_mask(name))
 278                 {
 279                         sendto_one_notice(source_p,
 280                                           ":A RESV has already been placed on nick: %s", name);
 281                         return;
 282                 }
 283
 284                 aconf = make_conf();
 285                 aconf->status = CONF_RESV_NICK;
 286                 aconf->port = 0;
 287                 aconf->created = rb_current_time();
 288                 aconf->host = rb_strdup(name);
 289                 aconf->passwd = rb_strdup(reason);
 290                 aconf->info.oper = operhash_add(get_oper_name(source_p));
 291                 rb_dlinkAddAlloc(aconf, &resv_conf_list);
 292
 293                 if(temp_time > 0)
 294                 {
 295                         aconf->hold = rb_current_time() + temp_time;
 296
 297                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 298                                                "%s added temporary %d min. RESV for [%s] [%s]",
 299                                                get_oper_name(source_p), temp_time / 60,
 300                                                name, reason);
 301                         ilog(L_KLINE, "R %s %d %s %s",
 302                              get_oper_name(source_p), temp_time / 60, name, reason);
 303                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 304                                           temp_time / 60, name);
 305                 }
 306                 else
 307                 {
 308                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 309                                                "%s added RESV for [%s] [%s]",
 310                                                get_oper_name(source_p), name, reason);
 311                         ilog(L_KLINE, "R %s 0 %s %s",
 312                              get_oper_name(source_p), name, reason);
 313                         sendto_one_notice(source_p, ":Added RESV [%s]", name);
 314
 315                         bandb_add(BANDB_RESV, source_p, aconf->host, NULL, aconf->passwd, NULL, 0);
 316                 }
 317         }
 318         else
 319                 sendto_one_notice(source_p, ":You have specified an invalid resv: [%s]", name);
 320 }
 321
 322 static void
 323 propagate_resv(struct Client *source_p, const char *target,
 324                int temp_time, const char *name, const char *reason)
 325 {
 326         if(!temp_time)
 327         {
 328                 sendto_match_servs(source_p, target,
 329                                    CAP_CLUSTER, NOCAPS, "RESV %s %s :%s", target, name, reason);
 330                 sendto_match_servs(source_p, target,
 331                                    CAP_ENCAP, CAP_CLUSTER,
 332                                    "ENCAP %s RESV %d %s 0 :%s", target, temp_time, name, reason);
 333         }
 334         else
 335                 sendto_match_servs(source_p, target,
 336                                    CAP_ENCAP, NOCAPS,
 337                                    "ENCAP %s RESV %d %s 0 :%s", target, temp_time, name, reason);
 338 }
 339
 340 static void
 341 cluster_resv(struct Client *source_p, int temp_time, const char *name, const char *reason)
 342 {
 343         struct remote_conf *shared_p;
 344         rb_dlink_node *ptr;
 345
 346         RB_DLINK_FOREACH(ptr, cluster_conf_list.head)
 347         {
 348                 shared_p = ptr->data;
 349
 350                 /* old protocol cant handle temps, and we dont really want
 351                  * to convert them to perm.. --fl
 352                  */
 353                 if(!temp_time)
 354                 {
 355                         if(!(shared_p->flags & SHARED_PRESV))
 356                                 continue;
 357
 358                         sendto_match_servs(source_p, shared_p->server,
 359                                            CAP_CLUSTER, NOCAPS,
 360                                            "RESV %s %s :%s", shared_p->server, name, reason);
 361                         sendto_match_servs(source_p, shared_p->server,
 362                                            CAP_ENCAP, CAP_CLUSTER,
 363                                            "ENCAP %s RESV 0 %s 0 :%s",
 364                                            shared_p->server, name, reason);
 365                 }
 366                 else if(shared_p->flags & SHARED_TRESV)
 367                         sendto_match_servs(source_p, shared_p->server,
 368                                            CAP_ENCAP, NOCAPS,
 369                                            "ENCAP %s RESV %d %s 0 :%s",
 370                                            shared_p->server, temp_time, name, reason);
 371         }
 372 }
 373
 374
 375 /*
 376  * mo_unresv()
 377  *     parv[0] = sender prefix
 378  *     parv[1] = channel/nick to unforbid
 379  */
 380 static int
 381 mo_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 382 {
 383         if(!IsOperResv(source_p))
 384         {
 385                 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "resv");
 386                 return 0;
 387         }
 388
 389         if((parc == 4) && (irccmp(parv[2], "ON") == 0))
 390         {
 391                 if(!IsOperRemoteBan(source_p))
 392                 {
 393                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 394                                    me.name, source_p->name, "remoteban");
 395                         return 0;
 396                 }
 397
 398                 propagate_generic(source_p, "UNRESV", parv[3], CAP_CLUSTER, "%s", parv[1]);
 399
 400                 if(match(parv[3], me.name) == 0)
 401                         return 0;
 402         }
 403         else if(rb_dlink_list_length(&cluster_conf_list) > 0)
 404                 cluster_generic(source_p, "UNRESV", SHARED_UNRESV, CAP_CLUSTER, "%s", parv[1]);
 405
 406         remove_resv(source_p, parv[1]);
 407         return 0;
 408 }
 409
 410 /* ms_unresv()
 411  *     parv[0] = sender prefix
 412  *     parv[1] = target server
 413  *     parv[2] = resv to remove
 414  */
 415 static int
 416 ms_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 417 {
 418         /* parv[0]  parv[1]        parv[2]
 419          * oper     target server  resv to remove
 420          */
 421         propagate_generic(source_p, "UNRESV", parv[1], CAP_CLUSTER, "%s", parv[2]);
 422
 423         if(!match(parv[1], me.name))
 424                 return 0;
 425
 426         if(!IsPerson(source_p))
 427                 return 0;
 428
 429         handle_remote_unresv(source_p, parv[2]);
 430         return 0;
 431 }
 432
 433 static int
 434 me_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 435 {
 436         /* name */
 437         if(!IsPerson(source_p))
 438                 return 0;
 439
 440         handle_remote_unresv(source_p, parv[1]);
 441         return 0;
 442 }
 443
 444 static void
 445 handle_remote_unresv(struct Client *source_p, const char *name)
 446 {
 447         if(!find_shared_conf(source_p->username, source_p->host,
 448                              source_p->servptr->name, SHARED_UNRESV))
 449                 return;
 450
 451         remove_resv(source_p, name);
 452
 453         return;
 454 }
 455
 456 static void
 457 remove_resv(struct Client *source_p, const char *name)
 458 {
 459         struct ConfItem *aconf = NULL;
 460
 461         if(IsChannelName(name))
 462         {
 463                 if((aconf = hash_find_resv(name)) == NULL)
 464                 {
 465                         sendto_one_notice(source_p, ":No RESV for %s", name);
 466                         return;
 467                 }
 468
 469                 sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 470                 ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 471                 if(!aconf->hold)
 472                 {
 473                         bandb_del(BANDB_RESV, aconf->host, NULL);
 474                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 475                                                "%s has removed the RESV for: [%s]",
 476                                                get_oper_name(source_p), name);
 477                 }
 478                 else
 479                 {
 480                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 481                                                "%s has removed the temporary RESV for: [%s]",
 482                                                get_oper_name(source_p), name);
 483                 }
 484                 del_from_resv_hash(name, aconf);
 485         }
 486         else
 487         {
 488                 rb_dlink_node *ptr;
 489
 490                 RB_DLINK_FOREACH(ptr, resv_conf_list.head)
 491                 {
 492                         aconf = ptr->data;
 493
 494                         if(irccmp(aconf->host, name))
 495                                 aconf = NULL;
 496                         else
 497                                 break;
 498                 }
 499
 500                 if(aconf == NULL)
 501                 {
 502                         sendto_one_notice(source_p, ":No RESV for %s", name);
 503                         return;
 504                 }
 505
 506                 if(!aconf->hold)
 507                         bandb_del(BANDB_RESV, aconf->host, NULL);
 508                 else
 509                 {
 510                         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 511                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 512                                                "%s has removed the RESV for: [%s]",
 513                                                get_oper_name(source_p), name);
 514                         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 515                 }
 516                 /* already have ptr from the loop above.. */
 517                 rb_dlinkDestroy(ptr, &resv_conf_list);
 518         }
 519         free_conf(aconf);
 520
 521         return;
 522 }
 523
 524 static void
 525 resv_chan_forcepart(const char *name, const char *reason, int temp_time)
 526 {
 527         rb_dlink_node *ptr;
 528         rb_dlink_node *next_ptr;
 529         struct Channel *chptr;
 530         struct membership *msptr;
 531         struct Client *target_p;
 532
 533         if(!ConfigChannel.resv_forcepart)
 534                 return;
 535
 536         /* for each user on our server in the channel list
 537          * send them a PART, and notify opers.
 538          */
 539         chptr = find_channel(name);
 540         if(chptr != NULL)
 541         {
 542                 RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head)
 543                 {
 544                         msptr = ptr->data;
 545                         target_p = msptr->client_p;
 546
 547                         if(IsExemptResv(target_p))
 548                                 continue;
 549
 550                         sendto_server(target_p, chptr, CAP_TS6, NOCAPS,
 551                                       ":%s PART %s", target_p->id, chptr->chname);
 552
 553                         sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s",
 554                                              target_p->name, target_p->username,
 555                                              target_p->host, chptr->chname, target_p->name);
 556
 557                         remove_user_from_channel(msptr);
 558
 559                         /* notify opers & user they were removed from the channel */
 560                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 561                                              "Forced PART for %s!%s@%s from %s (%s)",
 562                                              target_p->name, target_p->username,
 563                                              target_p->host, name, reason);
 564
 565                         if(temp_time > 0)
 566                                 sendto_one_notice(target_p, ":*** Channel %s is temporarily unavailable on this server.",
 567                                            name);
 568                         else
 569                                 sendto_one_notice(target_p, ":*** Channel %s is no longer available on this server.",
 570                                            name);
 571                 }
 572         }
 573 }