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 21544 2006-01-03 13:19:41Z leeh $
  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: 21544 $");
  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         /* RESV [time] <name> [ON <server>] :<reason> */
  88
  89         if((temp_time = valid_temp_time(parv[loc])) >= 0)
  90                 loc++;
  91         /* we just set temp_time to -1! */
  92         else
  93                 temp_time = 0;
  94
  95         name = parv[loc];
  96         loc++;
  97
  98         if((parc >= loc+2) && (irccmp(parv[loc], "ON") == 0))
  99         {
 100                 if(!IsOperRemoteBan(source_p))
 101                 {
 102                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 103                                 me.name, source_p->name, "remoteban");
 104                         return 0;
 105                 }
 106
 107                 target_server = parv[loc+1];
 108                 loc += 2;
 109         }
 110
 111         if(parc <= loc || EmptyString(parv[loc]))
 112         {
 113                 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
 114                            me.name, source_p->name, "RESV");
 115                 return 0;
 116         }
 117
 118         reason = parv[loc];
 119
 120         /* remote resv.. */
 121         if(target_server)
 122         {
 123                 propagate_resv(source_p, target_server, temp_time, name, reason);
 124
 125                 if(match(target_server, me.name) == 0)
 126                         return 0;
 127         }
 128         else if(dlink_list_length(&cluster_conf_list) > 0)
 129                 cluster_resv(source_p, temp_time, name, reason);
 130
 131         parse_resv(source_p, name, reason, temp_time);
 132
 133         return 0;
 134 }
 135
 136 /* ms_resv()
 137  *     parv[0] = sender prefix
 138  *     parv[1] = target server
 139  *     parv[2] = channel/nick to forbid
 140  *     parv[3] = reason
 141  */
 142 static int
 143 ms_resv(struct Client *client_p, struct Client *source_p,
 144         int parc, const char *parv[])
 145 {
 146         /* parv[0]  parv[1]        parv[2]  parv[3]
 147          * oper     target server  resv     reason
 148          */
 149         propagate_resv(source_p, parv[1], 0, parv[2], parv[3]);
 150
 151         if(!match(parv[1], me.name))
 152                 return 0;
 153
 154         if(!IsPerson(source_p))
 155                 return 0;
 156
 157         parse_resv(source_p, parv[2], parv[3], 0);
 158         return 0;
 159 }
 160
 161 static int
 162 me_resv(struct Client *client_p, struct Client *source_p,
 163         int parc, const char *parv[])
 164 {
 165         /* time name 0 :reason */
 166         if(!IsPerson(source_p))
 167                 return 0;
 168
 169         parse_resv(source_p, parv[2], parv[4], atoi(parv[1]));
 170         return 0;
 171 }
 172
 173 /* parse_resv()
 174  *
 175  * inputs       - source_p if error messages wanted
 176  *              - thing to resv
 177  *              - reason for resv
 178  * outputs      -
 179  * side effects - will parse the resv and create it if valid
 180  */
 181 static void
 182 parse_resv(struct Client *source_p, const char *name,
 183            const char *reason, int temp_time)
 184 {
 185         struct ConfItem *aconf;
 186
 187         if(!MyClient(source_p) &&
 188            !find_shared_conf(source_p->username, source_p->host,
 189                         source_p->servptr->name,
 190                         (temp_time > 0) ? SHARED_TRESV : SHARED_PRESV))
 191                 return;
 192
 193         if(IsChannelName(name))
 194         {
 195                 const char *p;
 196
 197                 if(hash_find_resv(name))
 198                 {
 199                         sendto_one_notice(source_p,
 200                                         ":A RESV has already been placed on channel: %s",
 201                                         name);
 202                         return;
 203                 }
 204
 205                 if(strlen(name) > CHANNELLEN)
 206                 {
 207                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 208                                           name);
 209                         return;
 210                 }
 211
 212                 for(p = name; *p; p++)
 213                 {
 214                         if(!IsChanChar(*p))
 215                         {
 216                                 sendto_one_notice(source_p,
 217                                                 ":Invalid character '%c' in resv",
 218                                                 *p);
 219                                 return;
 220                         }
 221                 }
 222
 223                 if(strchr(reason, '"'))
 224                 {
 225                         sendto_one_notice(source_p,
 226                                         ":Invalid character '\"' in comment");
 227                         return;
 228                 }
 229
 230                 aconf = make_conf();
 231                 aconf->status = CONF_RESV_CHANNEL;
 232                 aconf->port = 0;
 233                 DupString(aconf->name, name);
 234                 DupString(aconf->passwd, reason);
 235                 add_to_resv_hash(aconf->name, aconf);
 236
 237                 if(temp_time > 0)
 238                 {
 239                         aconf->hold = CurrentTime + temp_time;
 240
 241                         sendto_realops_flags(UMODE_ALL, L_ALL,
 242                                      "%s added temporary %d min. RESV for [%s] [%s]",
 243                                      get_oper_name(source_p), temp_time / 60,
 244                                      name, reason);
 245                         ilog(L_KLINE, "R %s %d %s %s",
 246                                 get_oper_name(source_p), temp_time / 60,
 247                                 name, reason);
 248                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 249                                         temp_time / 60, name);
 250                 }
 251                 else
 252                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 253                                         aconf->passwd, NULL, NULL, 0);
 254         }
 255         else if(clean_resv_nick(name))
 256         {
 257                 if(strlen(name) > NICKLEN*2)
 258                 {
 259                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 260                                            name);
 261                         return;
 262                 }
 263
 264                 if(strchr(reason, '"'))
 265                 {
 266                         sendto_one_notice(source_p,
 267                                         ":Invalid character '\"' in comment");
 268                         return;
 269                 }
 270
 271                 if(!valid_wild_card_simple(name))
 272                 {
 273                         sendto_one_notice(source_p,
 274                                            ":Please include at least %d non-wildcard "
 275                                            "characters with the resv",
 276                                            ConfigFileEntry.min_nonwildcard_simple);
 277                         return;
 278                 }
 279
 280                 if(find_nick_resv(name))
 281                 {
 282                         sendto_one_notice(source_p,
 283                                            ":A RESV has already been placed on nick: %s",
 284                                            name);
 285                         return;
 286                 }
 287
 288                 aconf = make_conf();
 289                 aconf->status = CONF_RESV_NICK;
 290                 aconf->port = 0;
 291                 DupString(aconf->name, name);
 292                 DupString(aconf->passwd, reason);
 293                 dlinkAddAlloc(aconf, &resv_conf_list);
 294
 295                 if(temp_time > 0)
 296                 {
 297                         aconf->hold = CurrentTime + temp_time;
 298
 299                         sendto_realops_flags(UMODE_ALL, L_ALL,
 300                                      "%s added temporary %d min. RESV for [%s] [%s]",
 301                                      get_oper_name(source_p), temp_time / 60,
 302                                      name, reason);
 303                         ilog(L_KLINE, "R %s %d %s %s",
 304                                 get_oper_name(source_p), temp_time / 60,
 305                                 name, reason);
 306                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 307                                         temp_time / 60, name);
 308                 }
 309                 else
 310                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 311                                         aconf->passwd, NULL, NULL, 0);
 312         }
 313         else
 314                 sendto_one_notice(source_p,
 315                                   ":You have specified an invalid resv: [%s]",
 316                                   name);
 317 }
 318
 319 static void
 320 propagate_resv(struct Client *source_p, const char *target,
 321                 int temp_time, const char *name, const char *reason)
 322 {
 323         if(!temp_time)
 324         {
 325                 sendto_match_servs(source_p, target,
 326                                 CAP_CLUSTER, NOCAPS,
 327                                 "RESV %s %s :%s",
 328                                 target, name, reason);
 329                 sendto_match_servs(source_p, target,
 330                                 CAP_ENCAP, CAP_CLUSTER,
 331                                 "ENCAP %s RESV %d %s 0 :%s",
 332                                 target, temp_time, name, reason);
 333         }
 334         else
 335                 sendto_match_servs(source_p, target,
 336                                 CAP_ENCAP, NOCAPS,
 337                                 "ENCAP %s RESV %d %s 0 :%s",
 338                                 target, temp_time, name, reason);
 339 }
 340
 341 static void
 342 cluster_resv(struct Client *source_p, int temp_time, const char *name,
 343                 const char *reason)
 344 {
 345         struct remote_conf *shared_p;
 346         dlink_node *ptr;
 347
 348         DLINK_FOREACH(ptr, cluster_conf_list.head)
 349         {
 350                 shared_p = ptr->data;
 351
 352                 /* old protocol cant handle temps, and we dont really want
 353                  * to convert them to perm.. --fl
 354                  */
 355                 if(!temp_time)
 356                 {
 357                         if(!(shared_p->flags & SHARED_PRESV))
 358                                 continue;
 359
 360                         sendto_match_servs(source_p, shared_p->server,
 361                                         CAP_CLUSTER, NOCAPS,
 362                                         "RESV %s %s :%s",
 363                                         shared_p->server, name, reason);
 364                         sendto_match_servs(source_p, shared_p->server,
 365                                         CAP_ENCAP, CAP_CLUSTER,
 366                                         "ENCAP %s RESV 0 %s 0 :%s",
 367                                         shared_p->server, name, reason);
 368                 }
 369                 else if(shared_p->flags & SHARED_TRESV)
 370                         sendto_match_servs(source_p, shared_p->server,
 371                                         CAP_ENCAP, NOCAPS,
 372                                         "ENCAP %s RESV %d %s 0 :%s",
 373                                         shared_p->server, temp_time, name, reason);
 374         }
 375 }
 376
 377
 378 /*
 379  * mo_unresv()
 380  *     parv[0] = sender prefix
 381  *     parv[1] = channel/nick to unforbid
 382  */
 383 static int
 384 mo_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 385 {
 386         if((parc == 4) && (irccmp(parv[2], "ON") == 0))
 387         {
 388                 if(!IsOperRemoteBan(source_p))
 389                 {
 390                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 391                                 me.name, source_p->name, "remoteban");
 392                         return 0;
 393                 }
 394
 395                 propagate_generic(source_p, "UNRESV", parv[3], CAP_CLUSTER,
 396                                 "%s", parv[1]);
 397
 398                 if(match(parv[3], me.name) == 0)
 399                         return 0;
 400         }
 401         else if(dlink_list_length(&cluster_conf_list) > 0)
 402                 cluster_generic(source_p, "UNRESV", SHARED_UNRESV, CAP_CLUSTER,
 403                                 "%s", parv[1]);
 404
 405         if(remove_temp_resv(source_p, parv[1]))
 406                 return 0;
 407
 408         remove_resv(source_p, parv[1]);
 409         return 0;
 410 }
 411
 412 /* ms_unresv()
 413  *     parv[0] = sender prefix
 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         /* parv[0]  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         if(remove_temp_resv(source_p, name))
 455                 return;
 456
 457         remove_resv(source_p, name);
 458
 459         return;
 460 }
 461
 462 static int
 463 remove_temp_resv(struct Client *source_p, const char *name)
 464 {
 465         struct ConfItem *aconf = NULL;
 466
 467         if(IsChannelName(name))
 468         {
 469                 if((aconf = hash_find_resv(name)) == NULL)
 470                         return 0;
 471
 472                 /* its permanent, let remove_resv do it properly */
 473                 if(!aconf->hold)
 474                         return 0;
 475
 476                 del_from_resv_hash(name, aconf);
 477                 free_conf(aconf);
 478         }
 479         else
 480         {
 481                 dlink_node *ptr;
 482
 483                 DLINK_FOREACH(ptr, resv_conf_list.head)
 484                 {
 485                         aconf = ptr->data;
 486
 487                         if(irccmp(aconf->name, name))
 488                                 aconf = NULL;
 489                         else
 490                                 break;
 491                 }
 492
 493                 if(aconf == NULL)
 494                         return 0;
 495
 496                 /* permanent, remove_resv() needs to do it properly */
 497                 if(!aconf->hold)
 498                         return 0;
 499
 500                 /* already have ptr from the loop above.. */
 501                 dlinkDestroy(ptr, &resv_conf_list);
 502                 free_conf(aconf);
 503         }
 504
 505         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 506         sendto_realops_flags(UMODE_ALL, 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         return 1;
 512 }
 513
 514 /* remove_resv()
 515  *
 516  * inputs       - client removing the resv
 517  *              - resv to remove
 518  * outputs      -
 519  * side effects - resv if found, is removed
 520  */
 521 static void
 522 remove_resv(struct Client *source_p, const char *name)
 523 {
 524         FILE *in, *out;
 525         char buf[BUFSIZE];
 526         char buff[BUFSIZE];
 527         char temppath[BUFSIZE];
 528         const char *filename;
 529         mode_t oldumask;
 530         char *p;
 531         int error_on_write = 0;
 532         int found_resv = 0;
 533
 534         ircsprintf(temppath, "%s.tmp", ConfigFileEntry.resvfile);
 535         filename = get_conf_name(RESV_TYPE);
 536
 537         if((in = fopen(filename, "r")) == NULL)
 538         {
 539                 sendto_one_notice(source_p, ":Cannot open %s", filename);
 540                 return;
 541         }
 542
 543         oldumask = umask(0);
 544
 545         if((out = fopen(temppath, "w")) == NULL)
 546         {
 547                 sendto_one_notice(source_p, ":Cannot open %s", temppath);
 548                 fclose(in);
 549                 umask(oldumask);
 550                 return;
 551         }
 552
 553         umask(oldumask);
 554
 555         while (fgets(buf, sizeof(buf), in))
 556         {
 557                 const char *resv_name;
 558
 559                 if(error_on_write)
 560                 {
 561                         if(temppath != NULL)
 562                                 (void) unlink(temppath);
 563
 564                         break;
 565                 }
 566
 567                 strlcpy(buff, buf, sizeof(buff));
 568
 569                 if((p = strchr(buff, '\n')) != NULL)
 570                         *p = '\0';
 571
 572                 if((*buff == '\0') || (*buff == '#'))
 573                 {
 574                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 575                         continue;
 576                 }
 577
 578                 if((resv_name = getfield(buff)) == NULL)
 579                 {
 580                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 581                         continue;
 582                 }
 583
 584                 if(irccmp(resv_name, name) == 0)
 585                 {
 586                         found_resv++;
 587                 }
 588                 else
 589                 {
 590                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 591                 }
 592         }
 593
 594         fclose(in);
 595         fclose(out);
 596
 597         if(error_on_write)
 598         {
 599                 sendto_one_notice(source_p, ":Couldn't write temp resv file, aborted");
 600                 return;
 601         }
 602         else if(!found_resv)
 603         {
 604                 sendto_one_notice(source_p, ":No RESV for %s", name);
 605
 606                 if(temppath != NULL)
 607                         (void) unlink(temppath);
 608
 609                 return;
 610         }
 611
 612         (void) rename(temppath, filename);
 613         rehash_bans(0);
 614
 615         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 616         sendto_realops_flags(UMODE_ALL, L_ALL,
 617                              "%s has removed the RESV for: [%s]", get_oper_name(source_p), name);
 618         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 619 }