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 "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: 3045 $");
  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                 if(hash_find_resv(name))
 196                 {
 197                         sendto_one_notice(source_p,
 198                                         ":A RESV has already been placed on channel: %s",
 199                                         name);
 200                         return;
 201                 }
 202
 203                 if(strlen(name) > CHANNELLEN)
 204                 {
 205                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 206                                           name);
 207                         return;
 208                 }
 209
 210                 if(strchr(reason, '"'))
 211                 {
 212                         sendto_one_notice(source_p,
 213                                         ":Invalid character '\"' in comment");
 214                         return;
 215                 }
 216
 217                 aconf = make_conf();
 218                 aconf->status = CONF_RESV_CHANNEL;
 219                 aconf->port = 0;
 220                 DupString(aconf->name, name);
 221                 DupString(aconf->passwd, reason);
 222                 add_to_resv_hash(aconf->name, aconf);
 223
 224                 if(temp_time > 0)
 225                 {
 226                         aconf->hold = CurrentTime + temp_time;
 227
 228                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 229                                      "%s added temporary %d min. RESV for [%s] [%s]",
 230                                      get_oper_name(source_p), temp_time / 60,
 231                                      name, reason);
 232                         ilog(L_KLINE, "R %s %d %s %s",
 233                                 get_oper_name(source_p), temp_time / 60,
 234                                 name, reason);
 235                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 236                                         temp_time / 60, name);
 237                 }
 238                 else
 239                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 240                                         aconf->passwd, NULL, NULL, 0);
 241         }
 242         else if(clean_resv_nick(name))
 243         {
 244                 if(strlen(name) > NICKLEN*2)
 245                 {
 246                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 247                                            name);
 248                         return;
 249                 }
 250
 251                 if(strchr(reason, '"'))
 252                 {
 253                         sendto_one_notice(source_p,
 254                                         ":Invalid character '\"' in comment");
 255                         return;
 256                 }
 257
 258                 if(!valid_wild_card_simple(name))
 259                 {
 260                         sendto_one_notice(source_p,
 261                                            ":Please include at least %d non-wildcard "
 262                                            "characters with the resv",
 263                                            ConfigFileEntry.min_nonwildcard_simple);
 264                         return;
 265                 }
 266
 267                 if(find_nick_resv_mask(name))
 268                 {
 269                         sendto_one_notice(source_p,
 270                                            ":A RESV has already been placed on nick: %s",
 271                                            name);
 272                         return;
 273                 }
 274
 275                 aconf = make_conf();
 276                 aconf->status = CONF_RESV_NICK;
 277                 aconf->port = 0;
 278                 DupString(aconf->name, name);
 279                 DupString(aconf->passwd, reason);
 280                 dlinkAddAlloc(aconf, &resv_conf_list);
 281
 282                 if(temp_time > 0)
 283                 {
 284                         aconf->hold = CurrentTime + temp_time;
 285
 286                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 287                                      "%s added temporary %d min. RESV for [%s] [%s]",
 288                                      get_oper_name(source_p), temp_time / 60,
 289                                      name, reason);
 290                         ilog(L_KLINE, "R %s %d %s %s",
 291                                 get_oper_name(source_p), temp_time / 60,
 292                                 name, reason);
 293                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 294                                         temp_time / 60, name);
 295                 }
 296                 else
 297                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 298                                         aconf->passwd, NULL, NULL, 0);
 299         }
 300         else
 301                 sendto_one_notice(source_p,
 302                                   ":You have specified an invalid resv: [%s]",
 303                                   name);
 304 }
 305
 306 static void
 307 propagate_resv(struct Client *source_p, const char *target,
 308                 int temp_time, const char *name, const char *reason)
 309 {
 310         if(!temp_time)
 311         {
 312                 sendto_match_servs(source_p, target,
 313                                 CAP_CLUSTER, NOCAPS,
 314                                 "RESV %s %s :%s",
 315                                 target, name, reason);
 316                 sendto_match_servs(source_p, target,
 317                                 CAP_ENCAP, CAP_CLUSTER,
 318                                 "ENCAP %s RESV %d %s 0 :%s",
 319                                 target, temp_time, name, reason);
 320         }
 321         else
 322                 sendto_match_servs(source_p, target,
 323                                 CAP_ENCAP, NOCAPS,
 324                                 "ENCAP %s RESV %d %s 0 :%s",
 325                                 target, temp_time, name, reason);
 326 }
 327
 328 static void
 329 cluster_resv(struct Client *source_p, int temp_time, const char *name,
 330                 const char *reason)
 331 {
 332         struct remote_conf *shared_p;
 333         dlink_node *ptr;
 334
 335         DLINK_FOREACH(ptr, cluster_conf_list.head)
 336         {
 337                 shared_p = ptr->data;
 338
 339                 /* old protocol cant handle temps, and we dont really want
 340                  * to convert them to perm.. --fl
 341                  */
 342                 if(!temp_time)
 343                 {
 344                         if(!(shared_p->flags & SHARED_PRESV))
 345                                 continue;
 346
 347                         sendto_match_servs(source_p, shared_p->server,
 348                                         CAP_CLUSTER, NOCAPS,
 349                                         "RESV %s %s :%s",
 350                                         shared_p->server, name, reason);
 351                         sendto_match_servs(source_p, shared_p->server,
 352                                         CAP_ENCAP, CAP_CLUSTER,
 353                                         "ENCAP %s RESV 0 %s 0 :%s",
 354                                         shared_p->server, name, reason);
 355                 }
 356                 else if(shared_p->flags & SHARED_TRESV)
 357                         sendto_match_servs(source_p, shared_p->server,
 358                                         CAP_ENCAP, NOCAPS,
 359                                         "ENCAP %s RESV %d %s 0 :%s",
 360                                         shared_p->server, temp_time, name, reason);
 361         }
 362 }
 363
 364
 365 /*
 366  * mo_unresv()
 367  *     parv[0] = sender prefix
 368  *     parv[1] = channel/nick to unforbid
 369  */
 370 static int
 371 mo_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 372 {
 373         if((parc == 4) && (irccmp(parv[2], "ON") == 0))
 374         {
 375                 if(!IsOperRemoteBan(source_p))
 376                 {
 377                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 378                                 me.name, source_p->name, "remoteban");
 379                         return 0;
 380                 }
 381
 382                 propagate_generic(source_p, "UNRESV", parv[3], CAP_CLUSTER,
 383                                 "%s", parv[1]);
 384
 385                 if(match(parv[3], me.name) == 0)
 386                         return 0;
 387         }
 388         else if(dlink_list_length(&cluster_conf_list) > 0)
 389                 cluster_generic(source_p, "UNRESV", SHARED_UNRESV, CAP_CLUSTER,
 390                                 "%s", parv[1]);
 391
 392         if(remove_temp_resv(source_p, parv[1]))
 393                 return 0;
 394
 395         remove_resv(source_p, parv[1]);
 396         return 0;
 397 }
 398
 399 /* ms_unresv()
 400  *     parv[0] = sender prefix
 401  *     parv[1] = target server
 402  *     parv[2] = resv to remove
 403  */
 404 static int
 405 ms_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 406 {
 407         /* parv[0]  parv[1]        parv[2]
 408          * oper     target server  resv to remove
 409          */
 410         propagate_generic(source_p, "UNRESV", parv[1], CAP_CLUSTER,
 411                         "%s", parv[2]);
 412
 413         if(!match(parv[1], me.name))
 414                 return 0;
 415
 416         if(!IsPerson(source_p))
 417                 return 0;
 418
 419         handle_remote_unresv(source_p, parv[2]);
 420         return 0;
 421 }
 422
 423 static int
 424 me_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 425 {
 426         /* name */
 427         if(!IsPerson(source_p))
 428                 return 0;
 429
 430         handle_remote_unresv(source_p, parv[1]);
 431         return 0;
 432 }
 433
 434 static void
 435 handle_remote_unresv(struct Client *source_p, const char *name)
 436 {
 437         if(!find_shared_conf(source_p->username, source_p->host,
 438                                 source_p->servptr->name, SHARED_UNRESV))
 439                 return;
 440
 441         if(remove_temp_resv(source_p, name))
 442                 return;
 443
 444         remove_resv(source_p, name);
 445
 446         return;
 447 }
 448
 449 static int
 450 remove_temp_resv(struct Client *source_p, const char *name)
 451 {
 452         struct ConfItem *aconf = NULL;
 453
 454         if(IsChannelName(name))
 455         {
 456                 if((aconf = hash_find_resv(name)) == NULL)
 457                         return 0;
 458
 459                 /* its permanent, let remove_resv do it properly */
 460                 if(!aconf->hold)
 461                         return 0;
 462
 463                 del_from_resv_hash(name, aconf);
 464                 free_conf(aconf);
 465         }
 466         else
 467         {
 468                 dlink_node *ptr;
 469
 470                 DLINK_FOREACH(ptr, resv_conf_list.head)
 471                 {
 472                         aconf = ptr->data;
 473
 474                         if(irccmp(aconf->name, name))
 475                                 aconf = NULL;
 476                         else
 477                                 break;
 478                 }
 479
 480                 if(aconf == NULL)
 481                         return 0;
 482
 483                 /* permanent, remove_resv() needs to do it properly */
 484                 if(!aconf->hold)
 485                         return 0;
 486
 487                 /* already have ptr from the loop above.. */
 488                 dlinkDestroy(ptr, &resv_conf_list);
 489                 free_conf(aconf);
 490         }
 491
 492         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 493         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 494                         "%s has removed the RESV for: [%s]",
 495                         get_oper_name(source_p), name);
 496         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 497
 498         return 1;
 499 }
 500
 501 /* remove_resv()
 502  *
 503  * inputs       - client removing the resv
 504  *              - resv to remove
 505  * outputs      -
 506  * side effects - resv if found, is removed
 507  */
 508 static void
 509 remove_resv(struct Client *source_p, const char *name)
 510 {
 511         FILE *in, *out;
 512         char buf[BUFSIZE];
 513         char buff[BUFSIZE];
 514         char temppath[BUFSIZE];
 515         const char *filename;
 516         mode_t oldumask;
 517         char *p;
 518         int error_on_write = 0;
 519         int found_resv = 0;
 520
 521         ircsprintf(temppath, "%s.tmp", ConfigFileEntry.resvfile);
 522         filename = get_conf_name(RESV_TYPE);
 523
 524         if((in = fopen(filename, "r")) == NULL)
 525         {
 526                 sendto_one_notice(source_p, ":Cannot open %s", filename);
 527                 return;
 528         }
 529
 530         oldumask = umask(0);
 531
 532         if((out = fopen(temppath, "w")) == NULL)
 533         {
 534                 sendto_one_notice(source_p, ":Cannot open %s", temppath);
 535                 fclose(in);
 536                 umask(oldumask);
 537                 return;
 538         }
 539
 540         umask(oldumask);
 541
 542         while (fgets(buf, sizeof(buf), in))
 543         {
 544                 const char *resv_name;
 545
 546                 if(error_on_write)
 547                 {
 548                         if(temppath != NULL)
 549                                 (void) unlink(temppath);
 550
 551                         break;
 552                 }
 553
 554                 strlcpy(buff, buf, sizeof(buff));
 555
 556                 if((p = strchr(buff, '\n')) != NULL)
 557                         *p = '\0';
 558
 559                 if((*buff == '\0') || (*buff == '#'))
 560                 {
 561                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 562                         continue;
 563                 }
 564
 565                 if((resv_name = getfield(buff)) == NULL)
 566                 {
 567                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 568                         continue;
 569                 }
 570
 571                 if(irccmp(resv_name, name) == 0)
 572                 {
 573                         found_resv++;
 574                 }
 575                 else
 576                 {
 577                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 578                 }
 579         }
 580
 581         fclose(in);
 582         if (fclose(out))
 583                 error_on_write = YES;
 584
 585         if(error_on_write)
 586         {
 587                 sendto_one_notice(source_p, ":Couldn't write temp resv file, aborted");
 588                 return;
 589         }
 590         else if(!found_resv)
 591         {
 592                 sendto_one_notice(source_p, ":No RESV for %s", name);
 593
 594                 if(temppath != NULL)
 595                         (void) unlink(temppath);
 596
 597                 return;
 598         }
 599
 600         if (rename(temppath, filename))
 601         {
 602                 sendto_one_notice(source_p, ":Couldn't rename temp file, aborted");
 603                 return;
 604         }
 605         rehash_bans(0);
 606
 607         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 608         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 609                              "%s has removed the RESV for: [%s]", get_oper_name(source_p), name);
 610         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 611 }