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
  24 #include "stdinc.h"
  25 #include "client.h"
  26 #include "channel.h"
  27 #include "ircd.h"
  28 #include "numeric.h"
  29 #include "s_serv.h"
  30 #include "send.h"
  31 #include "msg.h"
  32 #include "parse.h"
  33 #include "modules.h"
  34 #include "s_conf.h"
  35 #include "s_newconf.h"
  36 #include "hash.h"
  37 #include "s_log.h"
  38 #include "sprintf_irc.h"
  39
  40 static int mo_resv(struct Client *, struct Client *, int, const char **);
  41 static int ms_resv(struct Client *, struct Client *, int, const char **);
  42 static int me_resv(struct Client *, struct Client *, int, const char **);
  43 static int mo_unresv(struct Client *, struct Client *, int, const char **);
  44 static int ms_unresv(struct Client *, struct Client *, int, const char **);
  45 static int me_unresv(struct Client *, struct Client *, int, const char **);
  46
  47 struct Message resv_msgtab = {
  48         "RESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  49         {mg_ignore, mg_not_oper, {ms_resv, 4}, {ms_resv, 4}, {me_resv, 5}, {mo_resv, 3}}
  50 };
  51 struct Message unresv_msgtab = {
  52         "UNRESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  53         {mg_ignore, mg_not_oper, {ms_unresv, 3}, {ms_unresv, 3}, {me_unresv, 2}, {mo_unresv, 2}}
  54 };
  55
  56 mapi_clist_av1 resv_clist[] = { &resv_msgtab, &unresv_msgtab, NULL };
  57 DECLARE_MODULE_AV1(resv, NULL, NULL, resv_clist, NULL, NULL, "$Revision: 125 $");
  58
  59 static void parse_resv(struct Client *source_p, const char *name,
  60                         const char *reason, int temp_time);
  61 static void propagate_resv(struct Client *source_p, const char *target,
  62                         int temp_time, const char *name, const char *reason);
  63 static void cluster_resv(struct Client *source_p, int temp_time,
  64                         const char *name, const char *reason);
  65
  66 static void handle_remote_unresv(struct Client *source_p, const char *name);
  67 static void remove_resv(struct Client *source_p, const char *name);
  68 static int remove_temp_resv(struct Client *source_p, const char *name);
  69
  70 /*
  71  * mo_resv()
  72  *      parv[0] = sender prefix
  73  *      parv[1] = channel/nick to forbid
  74  *      parv[2] = reason
  75  */
  76 static int
  77 mo_resv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  78 {
  79         const char *name;
  80         const char *reason;
  81         const char *target_server = NULL;
  82         int temp_time;
  83         int loc = 1;
  84
  85         if(!IsOperResv(source_p))
  86         {
  87                 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "resv");
  88                 return 0;
  89         }
  90
  91         /* RESV [time] <name> [ON <server>] :<reason> */
  92
  93         if((temp_time = valid_temp_time(parv[loc])) >= 0)
  94                 loc++;
  95         /* we just set temp_time to -1! */
  96         else
  97                 temp_time = 0;
  98
  99         name = parv[loc];
 100         loc++;
 101
 102         if((parc >= loc+2) && (irccmp(parv[loc], "ON") == 0))
 103         {
 104                 target_server = parv[loc+1];
 105                 loc += 2;
 106         }
 107
 108         if(parc <= loc || EmptyString(parv[loc]))
 109         {
 110                 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
 111                            me.name, source_p->name, "RESV");
 112                 return 0;
 113         }
 114
 115         reason = parv[loc];
 116
 117         /* remote resv.. */
 118         if(target_server)
 119         {
 120                 if(!IsOperRemoteBan(source_p))
 121                 {
 122                         sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name,
 123                                         "remoteban");
 124                         return 0;
 125                 }
 126
 127                 if(temp_time > 0)
 128                         sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
 129                                         "%s is setting a temporary %d-minute RESV for %s on %s",
 130                                         get_oper_name(source_p), temp_time, name, target_server);
 131                 else
 132                         sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
 133                                         "%s is setting a RESV for %s on %s",
 134                                         get_oper_name(source_p), name, target_server);
 135
 136
 137                 propagate_resv(source_p, target_server, temp_time, name, reason);
 138
 139                 if(match(target_server, me.name) == 0)
 140                         return 0;
 141         }
 142         else if(dlink_list_length(&cluster_conf_list) > 0)
 143                 cluster_resv(source_p, temp_time, name, reason);
 144
 145         parse_resv(source_p, name, reason, temp_time);
 146
 147         return 0;
 148 }
 149
 150 /* ms_resv()
 151  *     parv[0] = sender prefix
 152  *     parv[1] = target server
 153  *     parv[2] = channel/nick to forbid
 154  *     parv[3] = reason
 155  */
 156 static int
 157 ms_resv(struct Client *client_p, struct Client *source_p,
 158         int parc, const char *parv[])
 159 {
 160         /* parv[0]  parv[1]        parv[2]  parv[3]
 161          * oper     target server  resv     reason
 162          */
 163         propagate_resv(source_p, parv[1], 0, parv[2], parv[3]);
 164
 165         if(!match(parv[1], me.name))
 166                 return 0;
 167
 168         if(!IsPerson(source_p))
 169                 return 0;
 170
 171         parse_resv(source_p, parv[2], parv[3], 0);
 172         return 0;
 173 }
 174
 175 static int
 176 me_resv(struct Client *client_p, struct Client *source_p,
 177         int parc, const char *parv[])
 178 {
 179         /* time name 0 :reason */
 180         if(!IsPerson(source_p))
 181                 return 0;
 182
 183         parse_resv(source_p, parv[2], parv[4], atoi(parv[1]));
 184         return 0;
 185 }
 186
 187 /* parse_resv()
 188  *
 189  * inputs       - source_p if error messages wanted
 190  *              - thing to resv
 191  *              - reason for resv
 192  * outputs      -
 193  * side effects - will parse the resv and create it if valid
 194  */
 195 static void
 196 parse_resv(struct Client *source_p, const char *name,
 197            const char *reason, int temp_time)
 198 {
 199         struct ConfItem *aconf;
 200
 201         if (!MyClient(source_p) &&
 202                 !find_client_shared_conf(source_p, temp_time > 0)? SHARED_TRESV : SHARED_PRESV)
 203                 return;
 204
 205         if(IsChannelName(name))
 206         {
 207                 if(hash_find_resv(name))
 208                 {
 209                         sendto_one_notice(source_p,
 210                                         ":A RESV has already been placed on channel: %s",
 211                                         name);
 212                         return;
 213                 }
 214
 215                 if(strlen(name) > CHANNELLEN)
 216                 {
 217                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 218                                           name);
 219                         return;
 220                 }
 221
 222                 if(strchr(reason, '"'))
 223                 {
 224                         sendto_one_notice(source_p,
 225                                         ":Invalid character '\"' in comment");
 226                         return;
 227                 }
 228
 229                 aconf = make_conf();
 230                 aconf->status = CONF_RESV_CHANNEL;
 231                 aconf->port = 0;
 232                 DupString(aconf->name, name);
 233                 DupString(aconf->passwd, reason);
 234                 add_to_resv_hash(aconf->name, aconf);
 235
 236                 if(temp_time > 0)
 237                 {
 238                         aconf->hold = CurrentTime + temp_time;
 239
 240                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 241                                      "%s added temporary %d min. RESV for [%s] [%s]",
 242                                      get_oper_name(source_p), temp_time / 60,
 243                                      name, reason);
 244                         ilog(L_KLINE, "R %s %d %s %s",
 245                                 get_oper_name(source_p), temp_time / 60,
 246                                 name, reason);
 247                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 248                                         temp_time / 60, name);
 249                 }
 250                 else
 251                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 252                                         aconf->passwd, NULL, NULL, 0);
 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",
 259                                            name);
 260                         return;
 261                 }
 262
 263                 if(strchr(reason, '"'))
 264                 {
 265                         sendto_one_notice(source_p,
 266                                         ":Invalid character '\"' in comment");
 267                         return;
 268                 }
 269
 270                 if(!valid_wild_card_simple(name))
 271                 {
 272                         sendto_one_notice(source_p,
 273                                            ":Please include at least %d non-wildcard "
 274                                            "characters with the resv",
 275                                            ConfigFileEntry.min_nonwildcard_simple);
 276                         return;
 277                 }
 278
 279                 if(find_nick_resv(name))
 280                 {
 281                         sendto_one_notice(source_p,
 282                                            ":A RESV has already been placed on nick: %s",
 283                                            name);
 284                         return;
 285                 }
 286
 287                 aconf = make_conf();
 288                 aconf->status = CONF_RESV_NICK;
 289                 aconf->port = 0;
 290                 DupString(aconf->name, name);
 291                 DupString(aconf->passwd, reason);
 292                 dlinkAddAlloc(aconf, &resv_conf_list);
 293
 294                 if(temp_time > 0)
 295                 {
 296                         aconf->hold = CurrentTime + temp_time;
 297
 298                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 299                                      "%s added temporary %d min. RESV for [%s] [%s]",
 300                                      get_oper_name(source_p), temp_time / 60,
 301                                      name, reason);
 302                         ilog(L_KLINE, "R %s %d %s %s",
 303                                 get_oper_name(source_p), temp_time / 60,
 304                                 name, reason);
 305                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 306                                         temp_time / 60, name);
 307                 }
 308                 else
 309                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 310                                         aconf->passwd, NULL, NULL, 0);
 311         }
 312         else
 313                 sendto_one_notice(source_p,
 314                                   ":You have specified an invalid resv: [%s]",
 315                                   name);
 316 }
 317
 318 static void
 319 propagate_resv(struct Client *source_p, const char *target,
 320                 int temp_time, const char *name, const char *reason)
 321 {
 322         if(!temp_time)
 323         {
 324                 sendto_match_servs(source_p, target,
 325                                 CAP_CLUSTER, NOCAPS,
 326                                 "RESV %s %s :%s",
 327                                 target, name, reason);
 328                 sendto_match_servs(source_p, target,
 329                                 CAP_ENCAP, CAP_CLUSTER,
 330                                 "ENCAP %s RESV %d %s 0 :%s",
 331                                 target, temp_time, name, reason);
 332         }
 333         else
 334                 sendto_match_servs(source_p, target,
 335                                 CAP_ENCAP, NOCAPS,
 336                                 "ENCAP %s RESV %d %s 0 :%s",
 337                                 target, temp_time, name, reason);
 338 }
 339
 340 static void
 341 cluster_resv(struct Client *source_p, int temp_time, const char *name,
 342                 const char *reason)
 343 {
 344         struct remote_conf *shared_p;
 345         dlink_node *ptr;
 346
 347         DLINK_FOREACH(ptr, cluster_conf_list.head)
 348         {
 349                 shared_p = ptr->data;
 350
 351                 /* old protocol cant handle temps, and we dont really want
 352                  * to convert them to perm.. --fl
 353                  */
 354                 if(!temp_time)
 355                 {
 356                         if(!(shared_p->flags & SHARED_PRESV))
 357                                 continue;
 358
 359                         sendto_match_servs(source_p, shared_p->server,
 360                                         CAP_CLUSTER, NOCAPS,
 361                                         "RESV %s %s :%s",
 362                                         shared_p->server, name, reason);
 363                         sendto_match_servs(source_p, shared_p->server,
 364                                         CAP_ENCAP, CAP_CLUSTER,
 365                                         "ENCAP %s RESV 0 %s 0 :%s",
 366                                         shared_p->server, name, reason);
 367                 }
 368                 else if(shared_p->flags & SHARED_TRESV)
 369                         sendto_match_servs(source_p, shared_p->server,
 370                                         CAP_ENCAP, NOCAPS,
 371                                         "ENCAP %s RESV %d %s 0 :%s",
 372                                         shared_p->server, temp_time, name, reason);
 373         }
 374 }
 375
 376
 377 /*
 378  * mo_unresv()
 379  *     parv[0] = sender prefix
 380  *     parv[1] = channel/nick to unforbid
 381  */
 382 static int
 383 mo_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 384 {
 385         if(!IsOperResv(source_p))
 386         {
 387                 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "resv");
 388                 return 0;
 389         }
 390
 391         if((parc == 4) && (irccmp(parv[2], "ON") == 0))
 392         {
 393                 if(!IsOperRemoteBan(source_p))
 394                 {
 395                         sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name,
 396                                         "remoteban");
 397                 }
 398                 propagate_generic(source_p, "UNRESV", parv[3], CAP_CLUSTER,
 399                                 "%s", parv[1]);
 400
 401                 if(match(parv[3], me.name) == 0)
 402                         return 0;
 403         }
 404
 405         else if(dlink_list_length(&cluster_conf_list) > 0)
 406                 cluster_generic(source_p, "UNRESV", SHARED_UNRESV, CAP_CLUSTER,
 407                                 "%s", parv[1]);
 408
 409         if(remove_temp_resv(source_p, parv[1]))
 410                 return 0;
 411
 412         remove_resv(source_p, parv[1]);
 413         return 0;
 414 }
 415
 416 /* ms_unresv()
 417  *     parv[0] = sender prefix
 418  *     parv[1] = target server
 419  *     parv[2] = resv to remove
 420  */
 421 static int
 422 ms_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 423 {
 424         /* parv[0]  parv[1]        parv[2]
 425          * oper     target server  resv to remove
 426          */
 427         propagate_generic(source_p, "UNRESV", parv[1], CAP_CLUSTER,
 428                         "%s", parv[2]);
 429
 430         if(!match(parv[1], me.name))
 431                 return 0;
 432
 433         if(!IsPerson(source_p))
 434                 return 0;
 435
 436         handle_remote_unresv(source_p, parv[2]);
 437         return 0;
 438 }
 439
 440 static int
 441 me_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 442 {
 443         /* name */
 444         if(!IsPerson(source_p))
 445                 return 0;
 446
 447         handle_remote_unresv(source_p, parv[1]);
 448         return 0;
 449 }
 450
 451 static void
 452 handle_remote_unresv(struct Client *source_p, const char *name)
 453 {
 454         if (!find_client_shared_conf(source_p, SHARED_UNRESV))
 455                 return;
 456         if(remove_temp_resv(source_p, name))
 457                 return;
 458
 459         remove_resv(source_p, name);
 460
 461         return;
 462 }
 463
 464 static int
 465 remove_temp_resv(struct Client *source_p, const char *name)
 466 {
 467         struct ConfItem *aconf = NULL;
 468
 469         if(IsChannelName(name))
 470         {
 471                 if((aconf = hash_find_resv(name)) == NULL)
 472                         return 0;
 473
 474                 /* its permanent, let remove_resv do it properly */
 475                 if(!aconf->hold)
 476                         return 0;
 477
 478                 del_from_resv_hash(name, aconf);
 479                 free_conf(aconf);
 480         }
 481         else
 482         {
 483                 dlink_node *ptr;
 484
 485                 DLINK_FOREACH(ptr, resv_conf_list.head)
 486                 {
 487                         aconf = ptr->data;
 488
 489                         if(irccmp(aconf->name, name))
 490                                 aconf = NULL;
 491                         else
 492                                 break;
 493                 }
 494
 495                 if(aconf == NULL)
 496                         return 0;
 497
 498                 /* permanent, remove_resv() needs to do it properly */
 499                 if(!aconf->hold)
 500                         return 0;
 501
 502                 /* already have ptr from the loop above.. */
 503                 dlinkDestroy(ptr, &resv_conf_list);
 504                 free_conf(aconf);
 505         }
 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         return 1;
 514 }
 515
 516 /* remove_resv()
 517  *
 518  * inputs       - client removing the resv
 519  *              - resv to remove
 520  * outputs      -
 521  * side effects - resv if found, is removed
 522  */
 523 static void
 524 remove_resv(struct Client *source_p, const char *name)
 525 {
 526         FILE *in, *out;
 527         char buf[BUFSIZE];
 528         char buff[BUFSIZE];
 529         char temppath[BUFSIZE];
 530         const char *filename;
 531         mode_t oldumask;
 532         char *p;
 533         int error_on_write = 0;
 534         int found_resv = 0;
 535
 536         ircsprintf(temppath, "%s.tmp", ConfigFileEntry.resvfile);
 537         filename = get_conf_name(RESV_TYPE);
 538
 539         if((in = fopen(filename, "r")) == NULL)
 540         {
 541                 sendto_one_notice(source_p, ":Cannot open %s", filename);
 542                 return;
 543         }
 544
 545         oldumask = umask(0);
 546
 547         if((out = fopen(temppath, "w")) == NULL)
 548         {
 549                 sendto_one_notice(source_p, ":Cannot open %s", temppath);
 550                 fclose(in);
 551                 umask(oldumask);
 552                 return;
 553         }
 554
 555         umask(oldumask);
 556
 557         while (fgets(buf, sizeof(buf), in))
 558         {
 559                 const char *resv_name;
 560
 561                 if(error_on_write)
 562                 {
 563                         if(temppath != NULL)
 564                                 (void) unlink(temppath);
 565
 566                         break;
 567                 }
 568
 569                 strlcpy(buff, buf, sizeof(buff));
 570
 571                 if((p = strchr(buff, '\n')) != NULL)
 572                         *p = '\0';
 573
 574                 if((*buff == '\0') || (*buff == '#'))
 575                 {
 576                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 577                         continue;
 578                 }
 579
 580                 if((resv_name = getfield(buff)) == NULL)
 581                 {
 582                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 583                         continue;
 584                 }
 585
 586                 if(irccmp(resv_name, name) == 0)
 587                 {
 588                         found_resv++;
 589                 }
 590                 else
 591                 {
 592                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 593                 }
 594         }
 595
 596         fclose(in);
 597         fclose(out);
 598
 599         if(error_on_write)
 600         {
 601                 sendto_one_notice(source_p, ":Couldn't write temp resv file, aborted");
 602                 return;
 603         }
 604         else if(!found_resv)
 605         {
 606                 sendto_one_notice(source_p, ":No RESV for %s", name);
 607
 608                 if(temppath != NULL)
 609                         (void) unlink(temppath);
 610
 611                 return;
 612         }
 613
 614         (void) rename(temppath, filename);
 615         rehash_bans(0);
 616
 617         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 618         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 619                              "%s has removed the RESV for: [%s]", get_oper_name(source_p), name);
 620         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 621 }