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[0] = sender prefix
  74  *      parv[1] = channel/nick to forbid
  75  *      parv[2] = reason
  76  */
  77 static int
  78 mo_resv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  79 {
  80         const char *name;
  81         const char *reason;
  82         const char *target_server = NULL;
  83         int temp_time;
  84         int loc = 1;
  85
  86         if(!IsOperResv(source_p))
  87         {
  88                 sendto_one(source_p, form_str(ERR_NOPRIVS),
  89                            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                 if(!IsOperRemoteBan(source_p))
 107                 {
 108                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 109                                 me.name, source_p->name, "remoteban");
 110                         return 0;
 111                 }
 112
 113                 target_server = parv[loc+1];
 114                 loc += 2;
 115         }
 116
 117         if(parc <= loc || EmptyString(parv[loc]))
 118         {
 119                 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
 120                            me.name, source_p->name, "RESV");
 121                 return 0;
 122         }
 123
 124         reason = parv[loc];
 125
 126         /* remote resv.. */
 127         if(target_server)
 128         {
 129                 propagate_resv(source_p, target_server, temp_time, name, reason);
 130
 131                 if(match(target_server, me.name) == 0)
 132                         return 0;
 133         }
 134         else if(rb_dlink_list_length(&cluster_conf_list) > 0)
 135                 cluster_resv(source_p, temp_time, name, reason);
 136
 137         parse_resv(source_p, name, reason, temp_time);
 138
 139         return 0;
 140 }
 141
 142 /* ms_resv()
 143  *     parv[0] = sender prefix
 144  *     parv[1] = target server
 145  *     parv[2] = channel/nick to forbid
 146  *     parv[3] = reason
 147  */
 148 static int
 149 ms_resv(struct Client *client_p, struct Client *source_p,
 150         int parc, const char *parv[])
 151 {
 152         /* parv[0]  parv[1]        parv[2]  parv[3]
 153          * oper     target server  resv     reason
 154          */
 155         propagate_resv(source_p, parv[1], 0, parv[2], parv[3]);
 156
 157         if(!match(parv[1], me.name))
 158                 return 0;
 159
 160         if(!IsPerson(source_p))
 161                 return 0;
 162
 163         parse_resv(source_p, parv[2], parv[3], 0);
 164         return 0;
 165 }
 166
 167 static int
 168 me_resv(struct Client *client_p, struct Client *source_p,
 169         int parc, const char *parv[])
 170 {
 171         /* time name 0 :reason */
 172         if(!IsPerson(source_p))
 173                 return 0;
 174
 175         parse_resv(source_p, parv[2], parv[4], atoi(parv[1]));
 176         return 0;
 177 }
 178
 179 /* parse_resv()
 180  *
 181  * inputs       - source_p if error messages wanted
 182  *              - thing to resv
 183  *              - reason for resv
 184  * outputs      -
 185  * side effects - will parse the resv and create it if valid
 186  */
 187 static void
 188 parse_resv(struct Client *source_p, const char *name,
 189            const char *reason, int temp_time)
 190 {
 191         struct ConfItem *aconf;
 192
 193         if(!MyClient(source_p) &&
 194            !find_shared_conf(source_p->username, source_p->host,
 195                         source_p->servptr->name,
 196                         (temp_time > 0) ? SHARED_TRESV : SHARED_PRESV))
 197                 return;
 198
 199         if(IsChannelName(name))
 200         {
 201                 if(hash_find_resv(name))
 202                 {
 203                         sendto_one_notice(source_p,
 204                                         ":A RESV has already been placed on channel: %s",
 205                                         name);
 206                         return;
 207                 }
 208
 209                 if(strlen(name) > CHANNELLEN)
 210                 {
 211                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 212                                           name);
 213                         return;
 214                 }
 215
 216                 if(strchr(reason, '"'))
 217                 {
 218                         sendto_one_notice(source_p,
 219                                         ":Invalid character '\"' in comment");
 220                         return;
 221                 }
 222
 223                 aconf = make_conf();
 224                 aconf->status = CONF_RESV_CHANNEL;
 225                 aconf->port = 0;
 226                 aconf->name = rb_strdup(name);
 227                 aconf->passwd = rb_strdup(reason);
 228                 add_to_resv_hash(aconf->name, aconf);
 229
 230                 if(temp_time > 0)
 231                 {
 232                         aconf->hold = rb_current_time() + temp_time;
 233
 234                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 235                                      "%s added temporary %d min. RESV for [%s] [%s]",
 236                                      get_oper_name(source_p), temp_time / 60,
 237                                      name, reason);
 238                         ilog(L_KLINE, "R %s %d %s %s",
 239                                 get_oper_name(source_p), temp_time / 60,
 240                                 name, reason);
 241                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 242                                         temp_time / 60, name);
 243                 }
 244                 else
 245                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 246                                         aconf->passwd, NULL, NULL, 0);
 247         }
 248         else if(clean_resv_nick(name))
 249         {
 250                 if(strlen(name) > NICKLEN*2)
 251                 {
 252                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 253                                            name);
 254                         return;
 255                 }
 256
 257                 if(strchr(reason, '"'))
 258                 {
 259                         sendto_one_notice(source_p,
 260                                         ":Invalid character '\"' in comment");
 261                         return;
 262                 }
 263
 264                 if(!valid_wild_card_simple(name))
 265                 {
 266                         sendto_one_notice(source_p,
 267                                            ":Please include at least %d non-wildcard "
 268                                            "characters with the resv",
 269                                            ConfigFileEntry.min_nonwildcard_simple);
 270                         return;
 271                 }
 272
 273                 if(find_nick_resv_mask(name))
 274                 {
 275                         sendto_one_notice(source_p,
 276                                            ":A RESV has already been placed on nick: %s",
 277                                            name);
 278                         return;
 279                 }
 280
 281                 aconf = make_conf();
 282                 aconf->status = CONF_RESV_NICK;
 283                 aconf->port = 0;
 284                 aconf->name = rb_strdup(name);
 285                 aconf->passwd = rb_strdup(reason);
 286                 rb_dlinkAddAlloc(aconf, &resv_conf_list);
 287
 288                 if(temp_time > 0)
 289                 {
 290                         aconf->hold = rb_current_time() + temp_time;
 291
 292                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 293                                      "%s added temporary %d min. RESV for [%s] [%s]",
 294                                      get_oper_name(source_p), temp_time / 60,
 295                                      name, reason);
 296                         ilog(L_KLINE, "R %s %d %s %s",
 297                                 get_oper_name(source_p), temp_time / 60,
 298                                 name, reason);
 299                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 300                                         temp_time / 60, name);
 301                 }
 302                 else
 303                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 304                                         aconf->passwd, NULL, NULL, 0);
 305         }
 306         else
 307                 sendto_one_notice(source_p,
 308                                   ":You have specified an invalid resv: [%s]",
 309                                   name);
 310 }
 311
 312 static void
 313 propagate_resv(struct Client *source_p, const char *target,
 314                 int temp_time, const char *name, const char *reason)
 315 {
 316         if(!temp_time)
 317         {
 318                 sendto_match_servs(source_p, target,
 319                                 CAP_CLUSTER, NOCAPS,
 320                                 "RESV %s %s :%s",
 321                                 target, name, reason);
 322                 sendto_match_servs(source_p, target,
 323                                 CAP_ENCAP, CAP_CLUSTER,
 324                                 "ENCAP %s RESV %d %s 0 :%s",
 325                                 target, temp_time, name, reason);
 326         }
 327         else
 328                 sendto_match_servs(source_p, target,
 329                                 CAP_ENCAP, NOCAPS,
 330                                 "ENCAP %s RESV %d %s 0 :%s",
 331                                 target, temp_time, name, reason);
 332 }
 333
 334 static void
 335 cluster_resv(struct Client *source_p, int temp_time, const char *name,
 336                 const char *reason)
 337 {
 338         struct remote_conf *shared_p;
 339         rb_dlink_node *ptr;
 340
 341         RB_DLINK_FOREACH(ptr, cluster_conf_list.head)
 342         {
 343                 shared_p = ptr->data;
 344
 345                 /* old protocol cant handle temps, and we dont really want
 346                  * to convert them to perm.. --fl
 347                  */
 348                 if(!temp_time)
 349                 {
 350                         if(!(shared_p->flags & SHARED_PRESV))
 351                                 continue;
 352
 353                         sendto_match_servs(source_p, shared_p->server,
 354                                         CAP_CLUSTER, NOCAPS,
 355                                         "RESV %s %s :%s",
 356                                         shared_p->server, name, reason);
 357                         sendto_match_servs(source_p, shared_p->server,
 358                                         CAP_ENCAP, CAP_CLUSTER,
 359                                         "ENCAP %s RESV 0 %s 0 :%s",
 360                                         shared_p->server, name, reason);
 361                 }
 362                 else if(shared_p->flags & SHARED_TRESV)
 363                         sendto_match_servs(source_p, shared_p->server,
 364                                         CAP_ENCAP, NOCAPS,
 365                                         "ENCAP %s RESV %d %s 0 :%s",
 366                                         shared_p->server, temp_time, name, reason);
 367         }
 368 }
 369
 370
 371 /*
 372  * mo_unresv()
 373  *     parv[0] = sender prefix
 374  *     parv[1] = channel/nick to unforbid
 375  */
 376 static int
 377 mo_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 378 {
 379         if(!IsOperResv(source_p))
 380         {
 381                 sendto_one(source_p, form_str(ERR_NOPRIVS),
 382                            me.name, source_p->name, "resv");
 383                 return 0;
 384         }
 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(rb_dlink_list_length(&cluster_conf_list) > 0)
 402                 cluster_generic(source_p, "UNRESV", SHARED_UNRESV, CAP_CLUSTER,
 403                                 "%s", parv[1]);
 404
 405         remove_resv(source_p, parv[1]);
 406         return 0;
 407 }
 408
 409 /* ms_unresv()
 410  *     parv[0] = sender prefix
 411  *     parv[1] = target server
 412  *     parv[2] = resv to remove
 413  */
 414 static int
 415 ms_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 416 {
 417         /* parv[0]  parv[1]        parv[2]
 418          * oper     target server  resv to remove
 419          */
 420         propagate_generic(source_p, "UNRESV", parv[1], CAP_CLUSTER,
 421                         "%s", parv[2]);
 422
 423         if(!match(parv[1], me.name))
 424                 return 0;
 425
 426         if(!IsPerson(source_p))
 427                 return 0;
 428
 429         handle_remote_unresv(source_p, parv[2]);
 430         return 0;
 431 }
 432
 433 static int
 434 me_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 435 {
 436         /* name */
 437         if(!IsPerson(source_p))
 438                 return 0;
 439
 440         handle_remote_unresv(source_p, parv[1]);
 441         return 0;
 442 }
 443
 444 static void
 445 handle_remote_unresv(struct Client *source_p, const char *name)
 446 {
 447         if(!find_shared_conf(source_p->username, source_p->host,
 448                                 source_p->servptr->name, SHARED_UNRESV))
 449                 return;
 450
 451         remove_resv(source_p, name);
 452
 453         return;
 454 }
 455
 456 static void
 457 remove_resv(struct Client *source_p, const char *name)
 458 {
 459         struct ConfItem *aconf = NULL;
 460
 461         if(IsChannelName(name))
 462         {
 463                 if((aconf = hash_find_resv(name)) == NULL)
 464                 {
 465                         sendto_one_notice(source_p, ":No RESV for %s", name);
 466                         return;
 467                 }
 468
 469                 if(!aconf->hold)
 470                 {
 471                         if (!remove_resv_from_file(source_p, name))
 472                                 return;
 473                 }
 474                 else
 475                 {
 476                         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 477                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 478                                         "%s has removed the RESV for: [%s]",
 479                                         get_oper_name(source_p), name);
 480                         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 481                 }
 482                 del_from_resv_hash(name, aconf);
 483         }
 484         else
 485         {
 486                 rb_dlink_node *ptr;
 487
 488                 RB_DLINK_FOREACH(ptr, resv_conf_list.head)
 489                 {
 490                         aconf = ptr->data;
 491
 492                         if(irccmp(aconf->name, name))
 493                                 aconf = NULL;
 494                         else
 495                                 break;
 496                 }
 497
 498                 if(aconf == NULL)
 499                 {
 500                         sendto_one_notice(source_p, ":No RESV for %s", name);
 501                         return;
 502                 }
 503
 504                 if(!aconf->hold)
 505                 {
 506                         if (!remove_resv_from_file(source_p, name))
 507                                 return;
 508                 }
 509                 else
 510                 {
 511                         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 512                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 513                                         "%s has removed the RESV for: [%s]",
 514                                         get_oper_name(source_p), name);
 515                         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 516                 }
 517                 /* already have ptr from the loop above.. */
 518                 rb_dlinkDestroy(ptr, &resv_conf_list);
 519         }
 520         free_conf(aconf);
 521
 522         return;
 523 }
 524
 525 /* remove_resv_from_file()
 526  *
 527  * inputs       - client removing the resv
 528  *              - resv to remove
 529  * outputs      -
 530  * side effects - resv if found, is removed from conf
 531  *              - does not touch resv hash or resv_conf_list
 532  */
 533 static int
 534 remove_resv_from_file(struct Client *source_p, const char *name)
 535 {
 536         FILE *in, *out;
 537         char buf[BUFSIZE];
 538         char buff[BUFSIZE];
 539         char temppath[BUFSIZE];
 540         const char *filename;
 541         mode_t oldumask;
 542         char *p;
 543         int error_on_write = 0;
 544         int found_resv = 0;
 545
 546         rb_sprintf(temppath, "%s.tmp", ConfigFileEntry.resvfile);
 547         filename = get_conf_name(RESV_TYPE);
 548
 549         if((in = fopen(filename, "r")) == NULL)
 550         {
 551                 sendto_one_notice(source_p, ":Cannot open %s", filename);
 552                 return 0;
 553         }
 554
 555         oldumask = umask(0);
 556
 557         if((out = fopen(temppath, "w")) == NULL)
 558         {
 559                 sendto_one_notice(source_p, ":Cannot open %s", temppath);
 560                 fclose(in);
 561                 umask(oldumask);
 562                 return 0;
 563         }
 564
 565         umask(oldumask);
 566
 567         while (fgets(buf, sizeof(buf), in))
 568         {
 569                 const char *resv_name;
 570
 571                 if(error_on_write)
 572                 {
 573                         if(temppath != NULL)
 574                                 (void) unlink(temppath);
 575
 576                         break;
 577                 }
 578
 579                 rb_strlcpy(buff, buf, sizeof(buff));
 580
 581                 if((p = strchr(buff, '\n')) != NULL)
 582                         *p = '\0';
 583
 584                 if((*buff == '\0') || (*buff == '#'))
 585                 {
 586                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 587                         continue;
 588                 }
 589
 590                 if((resv_name = getfield(buff)) == NULL)
 591                 {
 592                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 593                         continue;
 594                 }
 595
 596                 if(irccmp(resv_name, name) == 0)
 597                 {
 598                         found_resv++;
 599                 }
 600                 else
 601                 {
 602                         error_on_write = (fputs(buf, out) < 0) ? YES : NO;
 603                 }
 604         }
 605
 606         fclose(in);
 607         if (fclose(out))
 608                 error_on_write = YES;
 609
 610         if(error_on_write)
 611         {
 612                 sendto_one_notice(source_p, ":Couldn't write temp resv file, aborted");
 613                 return 0;
 614         }
 615         else if(!found_resv)
 616         {
 617                 sendto_one_notice(source_p, ":Cannot find RESV for %s in file", name);
 618
 619                 if(temppath != NULL)
 620                         (void) unlink(temppath);
 621
 622                 return 0;
 623         }
 624
 625         if (rename(temppath, filename))
 626         {
 627                 sendto_one_notice(source_p, ":Couldn't rename temp file, aborted");
 628                 return 0;
 629         }
 630
 631         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 632         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 633                              "%s has removed the RESV for: [%s]", get_oper_name(source_p), name);
 634         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 635
 636         return 1;
 637 }