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