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: m_resv.c 3045 2006-12-26 23:16:57Z jilles $
  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
  41 static int mo_resv(struct Client *, struct Client *, int, const char **);
  42 static int ms_resv(struct Client *, struct Client *, int, const char **);
  43 static int me_resv(struct Client *, struct Client *, int, const char **);
  44 static int mo_unresv(struct Client *, struct Client *, int, const char **);
  45 static int ms_unresv(struct Client *, struct Client *, int, const char **);
  46 static int me_unresv(struct Client *, struct Client *, int, const char **);
  47
  48 struct Message resv_msgtab = {
  49         "RESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  50         {mg_ignore, mg_not_oper, {ms_resv, 4}, {ms_resv, 4}, {me_resv, 5}, {mo_resv, 3}}
  51 };
  52 struct Message unresv_msgtab = {
  53         "UNRESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  54         {mg_ignore, mg_not_oper, {ms_unresv, 3}, {ms_unresv, 3}, {me_unresv, 2}, {mo_unresv, 2}}
  55 };
  56
  57 mapi_clist_av1 resv_clist[] = { &resv_msgtab, &unresv_msgtab, NULL };
  58 DECLARE_MODULE_AV1(resv, NULL, NULL, resv_clist, NULL, NULL, "$Revision: 3045 $");
  59
  60 static void parse_resv(struct Client *source_p, const char *name,
  61                         const char *reason, int temp_time);
  62 static void propagate_resv(struct Client *source_p, const char *target,
  63                         int temp_time, const char *name, const char *reason);
  64 static void cluster_resv(struct Client *source_p, int temp_time,
  65                         const char *name, const char *reason);
  66
  67 static void handle_remote_unresv(struct Client *source_p, const char *name);
  68 static void remove_resv(struct Client *source_p, const char *name);
  69 static int remove_resv_from_file(struct Client *source_p, const char *name);
  70
  71 /*
  72  * mo_resv()
  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),
  88                            me.name, source_p->name, "resv");
  89                 return 0;
  90         }
  91
  92         /* RESV [time] <name> [ON <server>] :<reason> */
  93
  94         if((temp_time = valid_temp_time(parv[loc])) >= 0)
  95                 loc++;
  96         /* we just set temp_time to -1! */
  97         else
  98                 temp_time = 0;
  99
 100         name = parv[loc];
 101         loc++;
 102
 103         if((parc >= loc+2) && (irccmp(parv[loc], "ON") == 0))
 104         {
 105                 if(!IsOperRemoteBan(source_p))
 106                 {
 107                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 108                                 me.name, source_p->name, "remoteban");
 109                         return 0;
 110                 }
 111
 112                 target_server = parv[loc+1];
 113                 loc += 2;
 114         }
 115
 116         if(parc <= loc || EmptyString(parv[loc]))
 117         {
 118                 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
 119                            me.name, source_p->name, "RESV");
 120                 return 0;
 121         }
 122
 123         reason = parv[loc];
 124
 125         /* remote resv.. */
 126         if(target_server)
 127         {
 128                 propagate_resv(source_p, target_server, temp_time, name, reason);
 129
 130                 if(match(target_server, me.name) == 0)
 131                         return 0;
 132         }
 133         else if(rb_dlink_list_length(&cluster_conf_list) > 0)
 134                 cluster_resv(source_p, temp_time, name, reason);
 135
 136         parse_resv(source_p, name, reason, temp_time);
 137
 138         return 0;
 139 }
 140
 141 /* ms_resv()
 142  *     parv[1] = target server
 143  *     parv[2] = channel/nick to forbid
 144  *     parv[3] = reason
 145  */
 146 static int
 147 ms_resv(struct Client *client_p, struct Client *source_p,
 148         int parc, const char *parv[])
 149 {
 150         /* source_p  parv[1]        parv[2]  parv[3]
 151          * oper      target server  resv     reason
 152          */
 153         propagate_resv(source_p, parv[1], 0, parv[2], parv[3]);
 154
 155         if(!match(parv[1], me.name))
 156                 return 0;
 157
 158         if(!IsPerson(source_p))
 159                 return 0;
 160
 161         parse_resv(source_p, parv[2], parv[3], 0);
 162         return 0;
 163 }
 164
 165 static int
 166 me_resv(struct Client *client_p, struct Client *source_p,
 167         int parc, const char *parv[])
 168 {
 169         /* time name 0 :reason */
 170         if(!IsPerson(source_p))
 171                 return 0;
 172
 173         parse_resv(source_p, parv[2], parv[4], atoi(parv[1]));
 174         return 0;
 175 }
 176
 177 /* parse_resv()
 178  *
 179  * inputs       - source_p if error messages wanted
 180  *              - thing to resv
 181  *              - reason for resv
 182  * outputs      -
 183  * side effects - will parse the resv and create it if valid
 184  */
 185 static void
 186 parse_resv(struct Client *source_p, const char *name,
 187            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",
 203                                         name);
 204                         return;
 205                 }
 206
 207                 if(strlen(name) > CHANNELLEN)
 208                 {
 209                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 210                                           name);
 211                         return;
 212                 }
 213
 214                 if(strchr(name, ','))
 215                 {
 216                         sendto_one_notice(source_p,
 217                                         ":Invalid character ',' in channel RESV");
 218                         return;
 219                 }
 220
 221                 if(strchr(reason, '"'))
 222                 {
 223                         sendto_one_notice(source_p,
 224                                         ":Invalid character '\"' in comment");
 225                         return;
 226                 }
 227
 228                 aconf = make_conf();
 229                 aconf->status = CONF_RESV_CHANNEL;
 230                 aconf->port = 0;
 231                 aconf->name = rb_strdup(name);
 232                 aconf->passwd = rb_strdup(reason);
 233                 add_to_resv_hash(aconf->name, aconf);
 234
 235                 if(temp_time > 0)
 236                 {
 237                         aconf->hold = rb_current_time() + temp_time;
 238
 239                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 240                                      "%s added temporary %d min. RESV for [%s] [%s]",
 241                                      get_oper_name(source_p), temp_time / 60,
 242                                      name, reason);
 243                         ilog(L_KLINE, "R %s %d %s %s",
 244                                 get_oper_name(source_p), temp_time / 60,
 245                                 name, reason);
 246                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 247                                         temp_time / 60, name);
 248                 }
 249                 else
 250                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 251                                         aconf->passwd, NULL, NULL, 0);
 252         }
 253         else if(clean_resv_nick(name))
 254         {
 255                 if(strlen(name) > NICKLEN*2)
 256                 {
 257                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 258                                            name);
 259                         return;
 260                 }
 261
 262                 if(strchr(reason, '"'))
 263                 {
 264                         sendto_one_notice(source_p,
 265                                         ":Invalid character '\"' in comment");
 266                         return;
 267                 }
 268
 269                 if(!valid_wild_card_simple(name))
 270                 {
 271                         sendto_one_notice(source_p,
 272                                            ":Please include at least %d non-wildcard "
 273                                            "characters with the resv",
 274                                            ConfigFileEntry.min_nonwildcard_simple);
 275                         return;
 276                 }
 277
 278                 if(find_nick_resv_mask(name))
 279                 {
 280                         sendto_one_notice(source_p,
 281                                            ":A RESV has already been placed on nick: %s",
 282                                            name);
 283                         return;
 284                 }
 285
 286                 aconf = make_conf();
 287                 aconf->status = CONF_RESV_NICK;
 288                 aconf->port = 0;
 289                 aconf->name = rb_strdup(name);
 290                 aconf->passwd = rb_strdup(reason);
 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,
 303                                 name, reason);
 304                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 305                                         temp_time / 60, name);
 306                 }
 307                 else
 308                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 309                                         aconf->passwd, NULL, NULL, 0);
 310         }
 311         else
 312                 sendto_one_notice(source_p,
 313                                   ":You have specified an invalid resv: [%s]",
 314                                   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,
 325                                 "RESV %s %s :%s",
 326                                 target, name, reason);
 327                 sendto_match_servs(source_p, target,
 328                                 CAP_ENCAP, CAP_CLUSTER,
 329                                 "ENCAP %s RESV %d %s 0 :%s",
 330                                 target, temp_time, name, reason);
 331         }
 332         else
 333                 sendto_match_servs(source_p, target,
 334                                 CAP_ENCAP, NOCAPS,
 335                                 "ENCAP %s RESV %d %s 0 :%s",
 336                                 target, temp_time, name, reason);
 337 }
 338
 339 static void
 340 cluster_resv(struct Client *source_p, int temp_time, const char *name,
 341                 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",
 361                                         shared_p->server, name, reason);
 362                         sendto_match_servs(source_p, shared_p->server,
 363                                         CAP_ENCAP, CAP_CLUSTER,
 364                                         "ENCAP %s RESV 0 %s 0 :%s",
 365                                         shared_p->server, name, reason);
 366                 }
 367                 else if(shared_p->flags & SHARED_TRESV)
 368                         sendto_match_servs(source_p, shared_p->server,
 369                                         CAP_ENCAP, NOCAPS,
 370                                         "ENCAP %s RESV %d %s 0 :%s",
 371                                         shared_p->server, temp_time, name, reason);
 372         }
 373 }
 374
 375
 376 /*
 377  * mo_unresv()
 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),
 386                            me.name, source_p->name, "resv");
 387                 return 0;
 388         }
 389
 390         if((parc == 4) && (irccmp(parv[2], "ON") == 0))
 391         {
 392                 if(!IsOperRemoteBan(source_p))
 393                 {
 394                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 395                                 me.name, source_p->name, "remoteban");
 396                         return 0;
 397                 }
 398
 399                 propagate_generic(source_p, "UNRESV", parv[3], CAP_CLUSTER,
 400                                 "%s", parv[1]);
 401
 402                 if(match(parv[3], me.name) == 0)
 403                         return 0;
 404         }
 405         else if(rb_dlink_list_length(&cluster_conf_list) > 0)
 406                 cluster_generic(source_p, "UNRESV", SHARED_UNRESV, CAP_CLUSTER,
 407                                 "%s", parv[1]);
 408
 409         remove_resv(source_p, parv[1]);
 410         return 0;
 411 }
 412
 413 /* ms_unresv()
 414  *     parv[1] = target server
 415  *     parv[2] = resv to remove
 416  */
 417 static int
 418 ms_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 419 {
 420         /* source_p  parv[1]        parv[2]
 421          * oper      target server  resv to remove
 422          */
 423         propagate_generic(source_p, "UNRESV", parv[1], CAP_CLUSTER,
 424                         "%s", parv[2]);
 425
 426         if(!match(parv[1], me.name))
 427                 return 0;
 428
 429         if(!IsPerson(source_p))
 430                 return 0;
 431
 432         handle_remote_unresv(source_p, parv[2]);
 433         return 0;
 434 }
 435
 436 static int
 437 me_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 438 {
 439         /* name */
 440         if(!IsPerson(source_p))
 441                 return 0;
 442
 443         handle_remote_unresv(source_p, parv[1]);
 444         return 0;
 445 }
 446
 447 static void
 448 handle_remote_unresv(struct Client *source_p, const char *name)
 449 {
 450         if(!find_shared_conf(source_p->username, source_p->host,
 451                                 source_p->servptr->name, SHARED_UNRESV))
 452                 return;
 453
 454         remove_resv(source_p, name);
 455
 456         return;
 457 }
 458
 459 static void
 460 remove_resv(struct Client *source_p, const char *name)
 461 {
 462         struct ConfItem *aconf = NULL;
 463
 464         if(IsChannelName(name))
 465         {
 466                 if((aconf = hash_find_resv(name)) == NULL)
 467                 {
 468                         sendto_one_notice(source_p, ":No RESV for %s", name);
 469                         return;
 470                 }
 471
 472                 if(!aconf->hold)
 473                 {
 474                         if (!remove_resv_from_file(source_p, name))
 475                                 return;
 476                 }
 477                 else
 478                 {
 479                         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 480                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 481                                         "%s has removed the RESV for: [%s]",
 482                                         get_oper_name(source_p), name);
 483                         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 484                 }
 485                 del_from_resv_hash(name, aconf);
 486         }
 487         else
 488         {
 489                 rb_dlink_node *ptr;
 490
 491                 RB_DLINK_FOREACH(ptr, resv_conf_list.head)
 492                 {
 493                         aconf = ptr->data;
 494
 495                         if(irccmp(aconf->name, name))
 496                                 aconf = NULL;
 497                         else
 498                                 break;
 499                 }
 500
 501                 if(aconf == NULL)
 502                 {
 503                         sendto_one_notice(source_p, ":No RESV for %s", name);
 504                         return;
 505                 }
 506
 507                 if(!aconf->hold)
 508                 {
 509                         if (!remove_resv_from_file(source_p, name))
 510                                 return;
 511                 }
 512                 else
 513                 {
 514                         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 515                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 516                                         "%s has removed the RESV for: [%s]",
 517                                         get_oper_name(source_p), name);
 518                         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 519                 }
 520                 /* already have ptr from the loop above.. */
 521                 rb_dlinkDestroy(ptr, &resv_conf_list);
 522         }
 523         free_conf(aconf);
 524
 525         return;
 526 }
 527
 528 /* remove_resv_from_file()
 529  *
 530  * inputs       - client removing the resv
 531  *              - resv to remove
 532  * outputs      -
 533  * side effects - resv if found, is removed from conf
 534  *              - does not touch resv hash or resv_conf_list
 535  */
 536 static int
 537 remove_resv_from_file(struct Client *source_p, const char *name)
 538 {
 539         FILE *in, *out;
 540         char buf[BUFSIZE];
 541         char buff[BUFSIZE];
 542         char temppath[BUFSIZE];
 543         const char *filename;
 544         mode_t oldumask;
 545         char *p;
 546         int error_on_write = 0;
 547         int found_resv = 0;
 548
 549         rb_sprintf(temppath, "%s.tmp", ConfigFileEntry.resvfile);
 550         filename = get_conf_name(RESV_TYPE);
 551
 552         if((in = fopen(filename, "r")) == NULL)
 553         {
 554                 sendto_one_notice(source_p, ":Cannot open %s", filename);
 555                 return 0;
 556         }
 557
 558         oldumask = umask(0);
 559
 560         if((out = fopen(temppath, "w")) == NULL)
 561         {
 562                 sendto_one_notice(source_p, ":Cannot open %s", temppath);
 563                 fclose(in);
 564                 umask(oldumask);
 565                 return 0;
 566         }
 567
 568         umask(oldumask);
 569
 570         while (fgets(buf, sizeof(buf), in))
 571         {
 572                 const char *resv_name;
 573
 574                 if(error_on_write)
 575                 {
 576                         if(temppath != NULL)
 577                                 (void) unlink(temppath);
 578
 579                         break;
 580                 }
 581
 582                 rb_strlcpy(buff, buf, sizeof(buff));
 583
 584                 if((p = strchr(buff, '\n')) != NULL)
 585                         *p = '\0';
 586
 587                 if((*buff == '\0') || (*buff == '#'))
 588                 {
 589                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 590                         continue;
 591                 }
 592
 593                 if((resv_name = getfield(buff)) == NULL)
 594                 {
 595                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 596                         continue;
 597                 }
 598
 599                 if(irccmp(resv_name, name) == 0)
 600                 {
 601                         found_resv++;
 602                 }
 603                 else
 604                 {
 605                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 606                 }
 607         }
 608
 609         fclose(in);
 610         if (fclose(out))
 611                 error_on_write = YES;
 612
 613         if(error_on_write)
 614         {
 615                 sendto_one_notice(source_p, ":Couldn't write temp resv file, aborted");
 616                 return 0;
 617         }
 618         else if(!found_resv)
 619         {
 620                 sendto_one_notice(source_p, ":Cannot find RESV for %s in file", name);
 621
 622                 if(temppath != NULL)
 623                         (void) unlink(temppath);
 624
 625                 return 0;
 626         }
 627
 628         if (rename(temppath, filename))
 629         {
 630                 sendto_one_notice(source_p, ":Couldn't rename temp file, aborted");
 631                 return 0;
 632         }
 633
 634         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 635         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 636                              "%s has removed the RESV for: [%s]", get_oper_name(source_p), name);
 637         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 638
 639         return 1;
 640 }