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->host = rb_strdup(name);
 222                 aconf->passwd = rb_strdup(reason);
 223                 add_to_resv_hash(aconf->host, aconf);
 224                 resv_chan_forcepart(aconf->host, aconf->passwd, temp_time);
 225
 226                 if(temp_time > 0)
 227                 {
 228                         aconf->hold = rb_current_time() + temp_time;
 229
 230                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 231                                                "%s added temporary %d min. RESV for [%s] [%s]",
 232                                                get_oper_name(source_p), temp_time / 60,
 233                                                name, reason);
 234                         ilog(L_KLINE, "R %s %d %s %s",
 235                              get_oper_name(source_p), temp_time / 60, name, reason);
 236                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 237                                           temp_time / 60, name);
 238                 }
 239                 else
 240                 {
 241                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 242                                                "%s added RESV for [%s] [%s]",
 243                                                get_oper_name(source_p), name, reason);
 244                         ilog(L_KLINE, "R %s 0 %s %s",
 245                              get_oper_name(source_p), name, reason);
 246                         sendto_one_notice(source_p, ":Added RESV [%s]", name);
 247
 248                         bandb_add(BANDB_RESV, source_p, aconf->host, NULL, aconf->passwd, NULL, 0);
 249                 }
 250         }
 251         else if(clean_resv_nick(name))
 252         {
 253                 if(strlen(name) > NICKLEN * 2)
 254                 {
 255                         sendto_one_notice(source_p, ":Invalid RESV length: %s", name);
 256                         return;
 257                 }
 258
 259                 if(strchr(reason, '"'))
 260                 {
 261                         sendto_one_notice(source_p, ":Invalid character '\"' in comment");
 262                         return;
 263                 }
 264
 265                 if(!valid_wild_card_simple(name))
 266                 {
 267                         sendto_one_notice(source_p,
 268                                           ":Please include at least %d non-wildcard "
 269                                           "characters with the resv",
 270                                           ConfigFileEntry.min_nonwildcard_simple);
 271                         return;
 272                 }
 273
 274                 if(find_nick_resv_mask(name))
 275                 {
 276                         sendto_one_notice(source_p,
 277                                           ":A RESV has already been placed on nick: %s", name);
 278                         return;
 279                 }
 280
 281                 aconf = make_conf();
 282                 aconf->status = CONF_RESV_NICK;
 283                 aconf->port = 0;
 284                 aconf->host = rb_strdup(name);
 285                 aconf->passwd = rb_strdup(reason);
 286                 rb_dlinkAddAlloc(aconf, &resv_conf_list);
 287
 288                 if(temp_time > 0)
 289                 {
 290                         aconf->hold = rb_current_time() + temp_time;
 291
 292                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 293                                                "%s added temporary %d min. RESV for [%s] [%s]",
 294                                                get_oper_name(source_p), temp_time / 60,
 295                                                name, reason);
 296                         ilog(L_KLINE, "R %s %d %s %s",
 297                              get_oper_name(source_p), temp_time / 60, name, reason);
 298                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 299                                           temp_time / 60, name);
 300                 }
 301                 else
 302                 {
 303                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 304                                                "%s added RESV for [%s] [%s]",
 305                                                get_oper_name(source_p), name, reason);
 306                         ilog(L_KLINE, "R %s 0 %s %s",
 307                              get_oper_name(source_p), name, reason);
 308                         sendto_one_notice(source_p, ":Added RESV [%s]", name);
 309
 310                         bandb_add(BANDB_RESV, source_p, aconf->host, NULL, aconf->passwd, NULL, 0);
 311                 }
 312         }
 313         else
 314                 sendto_one_notice(source_p, ":You have specified an invalid resv: [%s]", name);
 315 }
 316
 317 static void
 318 propagate_resv(struct Client *source_p, const char *target,
 319                int temp_time, const char *name, const char *reason)
 320 {
 321         if(!temp_time)
 322         {
 323                 sendto_match_servs(source_p, target,
 324                                    CAP_CLUSTER, NOCAPS, "RESV %s %s :%s", target, name, reason);
 325                 sendto_match_servs(source_p, target,
 326                                    CAP_ENCAP, CAP_CLUSTER,
 327                                    "ENCAP %s RESV %d %s 0 :%s", target, temp_time, name, reason);
 328         }
 329         else
 330                 sendto_match_servs(source_p, target,
 331                                    CAP_ENCAP, NOCAPS,
 332                                    "ENCAP %s RESV %d %s 0 :%s", target, temp_time, name, reason);
 333 }
 334
 335 static void
 336 cluster_resv(struct Client *source_p, int temp_time, const char *name, const char *reason)
 337 {
 338         struct remote_conf *shared_p;
 339         rb_dlink_node *ptr;
 340
 341         RB_DLINK_FOREACH(ptr, cluster_conf_list.head)
 342         {
 343                 shared_p = ptr->data;
 344
 345                 /* old protocol cant handle temps, and we dont really want
 346                  * to convert them to perm.. --fl
 347                  */
 348                 if(!temp_time)
 349                 {
 350                         if(!(shared_p->flags & SHARED_PRESV))
 351                                 continue;
 352
 353                         sendto_match_servs(source_p, shared_p->server,
 354                                            CAP_CLUSTER, NOCAPS,
 355                                            "RESV %s %s :%s", shared_p->server, name, reason);
 356                         sendto_match_servs(source_p, shared_p->server,
 357                                            CAP_ENCAP, CAP_CLUSTER,
 358                                            "ENCAP %s RESV 0 %s 0 :%s",
 359                                            shared_p->server, name, reason);
 360                 }
 361                 else if(shared_p->flags & SHARED_TRESV)
 362                         sendto_match_servs(source_p, shared_p->server,
 363                                            CAP_ENCAP, NOCAPS,
 364                                            "ENCAP %s RESV %d %s 0 :%s",
 365                                            shared_p->server, temp_time, name, reason);
 366         }
 367 }
 368
 369
 370 /*
 371  * mo_unresv()
 372  *     parv[0] = sender prefix
 373  *     parv[1] = channel/nick to unforbid
 374  */
 375 static int
 376 mo_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 377 {
 378         if(!IsOperResv(source_p))
 379         {
 380                 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "resv");
 381                 return 0;
 382         }
 383
 384         if((parc == 4) && (irccmp(parv[2], "ON") == 0))
 385         {
 386                 if(!IsOperRemoteBan(source_p))
 387                 {
 388                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 389                                    me.name, source_p->name, "remoteban");
 390                         return 0;
 391                 }
 392
 393                 propagate_generic(source_p, "UNRESV", parv[3], CAP_CLUSTER, "%s", parv[1]);
 394
 395                 if(match(parv[3], me.name) == 0)
 396                         return 0;
 397         }
 398         else if(rb_dlink_list_length(&cluster_conf_list) > 0)
 399                 cluster_generic(source_p, "UNRESV", SHARED_UNRESV, CAP_CLUSTER, "%s", parv[1]);
 400
 401         remove_resv(source_p, parv[1]);
 402         return 0;
 403 }
 404
 405 /* ms_unresv()
 406  *     parv[0] = sender prefix
 407  *     parv[1] = target server
 408  *     parv[2] = resv to remove
 409  */
 410 static int
 411 ms_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 412 {
 413         /* parv[0]  parv[1]        parv[2]
 414          * oper     target server  resv to remove
 415          */
 416         propagate_generic(source_p, "UNRESV", parv[1], CAP_CLUSTER, "%s", parv[2]);
 417
 418         if(!match(parv[1], me.name))
 419                 return 0;
 420
 421         if(!IsPerson(source_p))
 422                 return 0;
 423
 424         handle_remote_unresv(source_p, parv[2]);
 425         return 0;
 426 }
 427
 428 static int
 429 me_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 430 {
 431         /* name */
 432         if(!IsPerson(source_p))
 433                 return 0;
 434
 435         handle_remote_unresv(source_p, parv[1]);
 436         return 0;
 437 }
 438
 439 static void
 440 handle_remote_unresv(struct Client *source_p, const char *name)
 441 {
 442         if(!find_shared_conf(source_p->username, source_p->host,
 443                              source_p->servptr->name, SHARED_UNRESV))
 444                 return;
 445
 446         remove_resv(source_p, name);
 447
 448         return;
 449 }
 450
 451 static void
 452 remove_resv(struct Client *source_p, const char *name)
 453 {
 454         struct ConfItem *aconf = NULL;
 455
 456         if(IsChannelName(name))
 457         {
 458                 if((aconf = hash_find_resv(name)) == NULL)
 459                 {
 460                         sendto_one_notice(source_p, ":No RESV for %s", name);
 461                         return;
 462                 }
 463
 464                 sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 465                 ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 466                 if(!aconf->hold)
 467                 {
 468                         bandb_del(BANDB_RESV, aconf->host, NULL);
 469                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 470                                                "%s has removed the RESV for: [%s]",
 471                                                get_oper_name(source_p), name);
 472                 }
 473                 else
 474                 {
 475                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 476                                                "%s has removed the temporary RESV for: [%s]",
 477                                                get_oper_name(source_p), name);
 478                 }
 479                 del_from_resv_hash(name, aconf);
 480         }
 481         else
 482         {
 483                 rb_dlink_node *ptr;
 484
 485                 RB_DLINK_FOREACH(ptr, resv_conf_list.head)
 486                 {
 487                         aconf = ptr->data;
 488
 489                         if(irccmp(aconf->host, name))
 490                                 aconf = NULL;
 491                         else
 492                                 break;
 493                 }
 494
 495                 if(aconf == NULL)
 496                 {
 497                         sendto_one_notice(source_p, ":No RESV for %s", name);
 498                         return;
 499                 }
 500
 501                 if(!aconf->hold)
 502                         bandb_del(BANDB_RESV, aconf->host, NULL);
 503                 else
 504                 {
 505                         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 506                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 507                                                "%s has removed the RESV for: [%s]",
 508                                                get_oper_name(source_p), name);
 509                         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 510                 }
 511                 /* already have ptr from the loop above.. */
 512                 rb_dlinkDestroy(ptr, &resv_conf_list);
 513         }
 514         free_conf(aconf);
 515
 516         return;
 517 }
 518
 519 static void
 520 resv_chan_forcepart(const char *name, const char *reason, int temp_time)
 521 {
 522         rb_dlink_node *ptr;
 523         rb_dlink_node *next_ptr;
 524         struct Channel *chptr;
 525         struct membership *msptr;
 526         struct Client *target_p;
 527
 528         if(!ConfigChannel.resv_forcepart)
 529                 return;
 530
 531         /* for each user on our server in the channel list
 532          * send them a PART, and notify opers.
 533          */
 534         chptr = find_channel(name);
 535         if(chptr != NULL)
 536         {
 537                 RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head)
 538                 {
 539                         msptr = ptr->data;
 540                         target_p = msptr->client_p;
 541
 542                         if(IsExemptResv(target_p))
 543                                 continue;
 544
 545                         sendto_server(target_p, chptr, CAP_TS6, NOCAPS,
 546                                       ":%s PART %s", target_p->id, chptr->chname);
 547
 548                         sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s",
 549                                              target_p->name, target_p->username,
 550                                              target_p->host, chptr->chname, target_p->name);
 551
 552                         remove_user_from_channel(msptr);
 553
 554                         /* notify opers & user they were removed from the channel */
 555                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 556                                              "Forced PART for %s!%s@%s from %s (%s)",
 557                                              target_p->name, target_p->username,
 558                                              target_p->host, name, reason);
 559
 560                         if(temp_time > 0)
 561                                 sendto_one_notice(target_p, ":*** Channel %s is temporarily unavailable on this server.",
 562                                            name);
 563                         else
 564                                 sendto_one_notice(target_p, ":*** Channel %s is no longer available on this server.",
 565                                            name);
 566                 }
 567         }
 568 }