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 125 2006-11-12 19:39:18Z spb $
  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 "s_log.h"
  40 #include "sprintf_irc.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 struct Message unresv_msgtab = {
  54         "UNRESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  55         {mg_ignore, mg_not_oper, {ms_unresv, 3}, {ms_unresv, 3}, {me_unresv, 2}, {mo_unresv, 2}}
  56 };
  57
  58 mapi_clist_av1 resv_clist[] = { &resv_msgtab, &unresv_msgtab, NULL };
  59 DECLARE_MODULE_AV1(resv, NULL, NULL, resv_clist, NULL, NULL, "$Revision: 125 $");
  60
  61 static void parse_resv(struct Client *source_p, const char *name,
  62                         const char *reason, int temp_time);
  63 static void propagate_resv(struct Client *source_p, const char *target,
  64                         int temp_time, const char *name, const char *reason);
  65 static void cluster_resv(struct Client *source_p, int temp_time,
  66                         const char *name, const char *reason);
  67
  68 static void handle_remote_unresv(struct Client *source_p, const char *name);
  69 static void remove_resv(struct Client *source_p, const char *name);
  70 static int remove_temp_resv(struct Client *source_p, const char *name);
  71
  72 /*
  73  * mo_resv()
  74  *      parv[0] = sender prefix
  75  *      parv[1] = channel/nick to forbid
  76  *      parv[2] = reason
  77  */
  78 static int
  79 mo_resv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  80 {
  81         const char *name;
  82         const char *reason;
  83         const char *target_server = NULL;
  84         int temp_time;
  85         int loc = 1;
  86
  87         if(!IsOperResv(source_p))
  88         {
  89                 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "resv");
  90                 return 0;
  91         }
  92
  93         /* RESV [time] <name> [ON <server>] :<reason> */
  94
  95         if((temp_time = valid_temp_time(parv[loc])) >= 0)
  96                 loc++;
  97         /* we just set temp_time to -1! */
  98         else
  99                 temp_time = 0;
 100
 101         name = parv[loc];
 102         loc++;
 103
 104         if((parc >= loc+2) && (irccmp(parv[loc], "ON") == 0))
 105         {
 106                 target_server = parv[loc+1];
 107                 loc += 2;
 108         }
 109
 110         if(parc <= loc || EmptyString(parv[loc]))
 111         {
 112                 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
 113                            me.name, source_p->name, "RESV");
 114                 return 0;
 115         }
 116
 117         reason = parv[loc];
 118
 119         /* remote resv.. */
 120         if(target_server)
 121         {
 122                 if(!IsOperRemoteBan(source_p))
 123                 {
 124                         sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name,
 125                                         "remoteban");
 126                         return 0;
 127                 }
 128
 129                 if(temp_time > 0)
 130                         sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
 131                                         "%s is setting a temporary %d-minute RESV for %s on %s",
 132                                         get_oper_name(source_p), temp_time, name, target_server);
 133                 else
 134                         sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
 135                                         "%s is setting a RESV for %s on %s",
 136                                         get_oper_name(source_p), name, target_server);
 137
 138
 139                 propagate_resv(source_p, target_server, temp_time, name, reason);
 140
 141                 if(match(target_server, me.name) == 0)
 142                         return 0;
 143         }
 144         else if(dlink_list_length(&cluster_conf_list) > 0)
 145                 cluster_resv(source_p, temp_time, name, reason);
 146
 147         parse_resv(source_p, name, reason, temp_time);
 148
 149         return 0;
 150 }
 151
 152 /* ms_resv()
 153  *     parv[0] = sender prefix
 154  *     parv[1] = target server
 155  *     parv[2] = channel/nick to forbid
 156  *     parv[3] = reason
 157  */
 158 static int
 159 ms_resv(struct Client *client_p, struct Client *source_p,
 160         int parc, const char *parv[])
 161 {
 162         /* parv[0]  parv[1]        parv[2]  parv[3]
 163          * oper     target server  resv     reason
 164          */
 165         propagate_resv(source_p, parv[1], 0, parv[2], parv[3]);
 166
 167         if(!match(parv[1], me.name))
 168                 return 0;
 169
 170         if(!IsPerson(source_p))
 171                 return 0;
 172
 173         parse_resv(source_p, parv[2], parv[3], 0);
 174         return 0;
 175 }
 176
 177 static int
 178 me_resv(struct Client *client_p, struct Client *source_p,
 179         int parc, const char *parv[])
 180 {
 181         /* time name 0 :reason */
 182         if(!IsPerson(source_p))
 183                 return 0;
 184
 185         parse_resv(source_p, parv[2], parv[4], atoi(parv[1]));
 186         return 0;
 187 }
 188
 189 /* parse_resv()
 190  *
 191  * inputs       - source_p if error messages wanted
 192  *              - thing to resv
 193  *              - reason for resv
 194  * outputs      -
 195  * side effects - will parse the resv and create it if valid
 196  */
 197 static void
 198 parse_resv(struct Client *source_p, const char *name,
 199            const char *reason, int temp_time)
 200 {
 201         struct ConfItem *aconf;
 202
 203         if(!MyClient(source_p) &&
 204            !find_shared_conf(source_p->username, source_p->host,
 205                         source_p->user->server,
 206                         (temp_time > 0) ? SHARED_TRESV : SHARED_PRESV))
 207                 return;
 208
 209         if(IsChannelName(name))
 210         {
 211                 if(hash_find_resv(name))
 212                 {
 213                         sendto_one_notice(source_p,
 214                                         ":A RESV has already been placed on channel: %s",
 215                                         name);
 216                         return;
 217                 }
 218
 219                 if(strlen(name) > CHANNELLEN)
 220                 {
 221                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 222                                           name);
 223                         return;
 224                 }
 225
 226                 if(strchr(reason, '"'))
 227                 {
 228                         sendto_one_notice(source_p,
 229                                         ":Invalid character '\"' in comment");
 230                         return;
 231                 }
 232
 233                 aconf = make_conf();
 234                 aconf->status = CONF_RESV_CHANNEL;
 235                 aconf->port = 0;
 236                 DupString(aconf->name, name);
 237                 DupString(aconf->passwd, reason);
 238                 add_to_resv_hash(aconf->name, aconf);
 239
 240                 if(temp_time > 0)
 241                 {
 242                         aconf->hold = CurrentTime + temp_time;
 243
 244                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 245                                      "%s added temporary %d min. RESV for [%s] [%s]",
 246                                      get_oper_name(source_p), temp_time / 60,
 247                                      name, reason);
 248                         ilog(L_KLINE, "R %s %d %s %s",
 249                                 get_oper_name(source_p), temp_time / 60,
 250                                 name, reason);
 251                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 252                                         temp_time / 60, name);
 253                 }
 254                 else
 255                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 256                                         aconf->passwd, NULL, NULL, 0);
 257         }
 258         else if(clean_resv_nick(name))
 259         {
 260                 if(strlen(name) > NICKLEN*2)
 261                 {
 262                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 263                                            name);
 264                         return;
 265                 }
 266
 267                 if(strchr(reason, '"'))
 268                 {
 269                         sendto_one_notice(source_p,
 270                                         ":Invalid character '\"' in comment");
 271                         return;
 272                 }
 273
 274                 if(!valid_wild_card_simple(name))
 275                 {
 276                         sendto_one_notice(source_p,
 277                                            ":Please include at least %d non-wildcard "
 278                                            "characters with the resv",
 279                                            ConfigFileEntry.min_nonwildcard_simple);
 280                         return;
 281                 }
 282
 283                 if(find_nick_resv(name))
 284                 {
 285                         sendto_one_notice(source_p,
 286                                            ":A RESV has already been placed on nick: %s",
 287                                            name);
 288                         return;
 289                 }
 290
 291                 aconf = make_conf();
 292                 aconf->status = CONF_RESV_NICK;
 293                 aconf->port = 0;
 294                 DupString(aconf->name, name);
 295                 DupString(aconf->passwd, reason);
 296                 dlinkAddAlloc(aconf, &resv_conf_list);
 297
 298                 if(temp_time > 0)
 299                 {
 300                         aconf->hold = CurrentTime + temp_time;
 301
 302                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 303                                      "%s added temporary %d min. RESV for [%s] [%s]",
 304                                      get_oper_name(source_p), temp_time / 60,
 305                                      name, reason);
 306                         ilog(L_KLINE, "R %s %d %s %s",
 307                                 get_oper_name(source_p), temp_time / 60,
 308                                 name, reason);
 309                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 310                                         temp_time / 60, name);
 311                 }
 312                 else
 313                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 314                                         aconf->passwd, NULL, NULL, 0);
 315         }
 316         else
 317                 sendto_one_notice(source_p,
 318                                   ":You have specified an invalid resv: [%s]",
 319                                   name);
 320 }
 321
 322 static void
 323 propagate_resv(struct Client *source_p, const char *target,
 324                 int temp_time, const char *name, const char *reason)
 325 {
 326         if(!temp_time)
 327         {
 328                 sendto_match_servs(source_p, target,
 329                                 CAP_CLUSTER, NOCAPS,
 330                                 "RESV %s %s :%s",
 331                                 target, name, reason);
 332                 sendto_match_servs(source_p, target,
 333                                 CAP_ENCAP, CAP_CLUSTER,
 334                                 "ENCAP %s RESV %d %s 0 :%s",
 335                                 target, temp_time, name, reason);
 336         }
 337         else
 338                 sendto_match_servs(source_p, target,
 339                                 CAP_ENCAP, NOCAPS,
 340                                 "ENCAP %s RESV %d %s 0 :%s",
 341                                 target, temp_time, name, reason);
 342 }
 343
 344 static void
 345 cluster_resv(struct Client *source_p, int temp_time, const char *name,
 346                 const char *reason)
 347 {
 348         struct remote_conf *shared_p;
 349         dlink_node *ptr;
 350
 351         DLINK_FOREACH(ptr, cluster_conf_list.head)
 352         {
 353                 shared_p = ptr->data;
 354
 355                 /* old protocol cant handle temps, and we dont really want
 356                  * to convert them to perm.. --fl
 357                  */
 358                 if(!temp_time)
 359                 {
 360                         if(!(shared_p->flags & SHARED_PRESV))
 361                                 continue;
 362
 363                         sendto_match_servs(source_p, shared_p->server,
 364                                         CAP_CLUSTER, NOCAPS,
 365                                         "RESV %s %s :%s",
 366                                         shared_p->server, name, reason);
 367                         sendto_match_servs(source_p, shared_p->server,
 368                                         CAP_ENCAP, CAP_CLUSTER,
 369                                         "ENCAP %s RESV 0 %s 0 :%s",
 370                                         shared_p->server, name, reason);
 371                 }
 372                 else if(shared_p->flags & SHARED_TRESV)
 373                         sendto_match_servs(source_p, shared_p->server,
 374                                         CAP_ENCAP, NOCAPS,
 375                                         "ENCAP %s RESV %d %s 0 :%s",
 376                                         shared_p->server, temp_time, name, reason);
 377         }
 378 }
 379
 380
 381 /*
 382  * mo_unresv()
 383  *     parv[0] = sender prefix
 384  *     parv[1] = channel/nick to unforbid
 385  */
 386 static int
 387 mo_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 388 {
 389         if(!IsOperResv(source_p))
 390         {
 391                 sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "resv");
 392                 return 0;
 393         }
 394
 395         if((parc == 4) && (irccmp(parv[2], "ON") == 0))
 396         {
 397                 if(!IsOperRemoteBan(source_p))
 398                 {
 399                         sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name,
 400                                         "remoteban");
 401                 }
 402                 propagate_generic(source_p, "UNRESV", parv[3], CAP_CLUSTER,
 403                                 "%s", parv[1]);
 404
 405                 if(match(parv[3], me.name) == 0)
 406                         return 0;
 407         }
 408
 409         else if(dlink_list_length(&cluster_conf_list) > 0)
 410                 cluster_generic(source_p, "UNRESV", SHARED_UNRESV, CAP_CLUSTER,
 411                                 "%s", parv[1]);
 412
 413         if(remove_temp_resv(source_p, parv[1]))
 414                 return 0;
 415
 416         remove_resv(source_p, parv[1]);
 417         return 0;
 418 }
 419
 420 /* ms_unresv()
 421  *     parv[0] = sender prefix
 422  *     parv[1] = target server
 423  *     parv[2] = resv to remove
 424  */
 425 static int
 426 ms_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 427 {
 428         /* parv[0]  parv[1]        parv[2]
 429          * oper     target server  resv to remove
 430          */
 431         propagate_generic(source_p, "UNRESV", parv[1], CAP_CLUSTER,
 432                         "%s", parv[2]);
 433
 434         if(!match(parv[1], me.name))
 435                 return 0;
 436
 437         if(!IsPerson(source_p))
 438                 return 0;
 439
 440         handle_remote_unresv(source_p, parv[2]);
 441         return 0;
 442 }
 443
 444 static int
 445 me_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 446 {
 447         /* name */
 448         if(!IsPerson(source_p))
 449                 return 0;
 450
 451         handle_remote_unresv(source_p, parv[1]);
 452         return 0;
 453 }
 454
 455 static void
 456 handle_remote_unresv(struct Client *source_p, const char *name)
 457 {
 458         if(!find_shared_conf(source_p->username, source_p->host,
 459                                 source_p->user->server, SHARED_UNRESV))
 460                 return;
 461
 462         if(remove_temp_resv(source_p, name))
 463                 return;
 464
 465         remove_resv(source_p, name);
 466
 467         return;
 468 }
 469
 470 static int
 471 remove_temp_resv(struct Client *source_p, const char *name)
 472 {
 473         struct ConfItem *aconf = NULL;
 474
 475         if(IsChannelName(name))
 476         {
 477                 if((aconf = hash_find_resv(name)) == NULL)
 478                         return 0;
 479
 480                 /* its permanent, let remove_resv do it properly */
 481                 if(!aconf->hold)
 482                         return 0;
 483
 484                 del_from_resv_hash(name, aconf);
 485                 free_conf(aconf);
 486         }
 487         else
 488         {
 489                 dlink_node *ptr;
 490
 491                 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                         return 0;
 503
 504                 /* permanent, remove_resv() needs to do it properly */
 505                 if(!aconf->hold)
 506                         return 0;
 507
 508                 /* already have ptr from the loop above.. */
 509                 dlinkDestroy(ptr, &resv_conf_list);
 510                 free_conf(aconf);
 511         }
 512
 513         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 514         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 515                         "%s has removed the RESV for: [%s]",
 516                         get_oper_name(source_p), name);
 517         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 518
 519         return 1;
 520 }
 521
 522 /* remove_resv()
 523  *
 524  * inputs       - client removing the resv
 525  *              - resv to remove
 526  * outputs      -
 527  * side effects - resv if found, is removed
 528  */
 529 static void
 530 remove_resv(struct Client *source_p, const char *name)
 531 {
 532         FILE *in, *out;
 533         char buf[BUFSIZE];
 534         char buff[BUFSIZE];
 535         char temppath[BUFSIZE];
 536         const char *filename;
 537         mode_t oldumask;
 538         char *p;
 539         int error_on_write = 0;
 540         int found_resv = 0;
 541
 542         ircsprintf(temppath, "%s.tmp", ConfigFileEntry.resvfile);
 543         filename = get_conf_name(RESV_TYPE);
 544
 545         if((in = fopen(filename, "r")) == NULL)
 546         {
 547                 sendto_one_notice(source_p, ":Cannot open %s", filename);
 548                 return;
 549         }
 550
 551         oldumask = umask(0);
 552
 553         if((out = fopen(temppath, "w")) == NULL)
 554         {
 555                 sendto_one_notice(source_p, ":Cannot open %s", temppath);
 556                 fclose(in);
 557                 umask(oldumask);
 558                 return;
 559         }
 560
 561         umask(oldumask);
 562
 563         while (fgets(buf, sizeof(buf), in))
 564         {
 565                 const char *resv_name;
 566
 567                 if(error_on_write)
 568                 {
 569                         if(temppath != NULL)
 570                                 (void) unlink(temppath);
 571
 572                         break;
 573                 }
 574
 575                 strlcpy(buff, buf, sizeof(buff));
 576
 577                 if((p = strchr(buff, '\n')) != NULL)
 578                         *p = '\0';
 579
 580                 if((*buff == '\0') || (*buff == '#'))
 581                 {
 582                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 583                         continue;
 584                 }
 585
 586                 if((resv_name = getfield(buff)) == NULL)
 587                 {
 588                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 589                         continue;
 590                 }
 591
 592                 if(irccmp(resv_name, name) == 0)
 593                 {
 594                         found_resv++;
 595                 }
 596                 else
 597                 {
 598                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 599                 }
 600         }
 601
 602         fclose(in);
 603         fclose(out);
 604
 605         if(error_on_write)
 606         {
 607                 sendto_one_notice(source_p, ":Couldn't write temp resv file, aborted");
 608                 return;
 609         }
 610         else if(!found_resv)
 611         {
 612                 sendto_one_notice(source_p, ":No RESV for %s", name);
 613
 614                 if(temppath != NULL)
 615                         (void) unlink(temppath);
 616
 617                 return;
 618         }
 619
 620         (void) rename(temppath, filename);
 621         rehash_bans(0);
 622
 623         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 624         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 625                              "%s has removed the RESV for: [%s]", get_oper_name(source_p), name);
 626         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 627 }