modules/m_resv.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_resv.c: Reserves(jupes) a nickname or channel.
   4  *
   5  *  Copyright (C) 2001-2002 Hybrid Development Team
   6  *  Copyright (C) 2002-2005 ircd-ratbox development team
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  21  *  USA
  22  *
  23  *  $Id: m_resv.c 3045 2006-12-26 23:16:57Z jilles $
  24  */
  25
  26 #include "stdinc.h"
  27 #include "client.h"
  28 #include "channel.h"
  29 #include "ircd.h"
  30 #include "numeric.h"
  31 #include "s_serv.h"
  32 #include "send.h"
  33 #include "msg.h"
  34 #include "parse.h"
  35 #include "modules.h"
  36 #include "s_conf.h"
  37 #include "s_newconf.h"
  38 #include "hash.h"
  39 #include "logger.h"
  40
  41 static int mo_resv(struct Client *, struct Client *, int, const char **);
  42 static int ms_resv(struct Client *, struct Client *, int, const char **);
  43 static int me_resv(struct Client *, struct Client *, int, const char **);
  44 static int mo_unresv(struct Client *, struct Client *, int, const char **);
  45 static int ms_unresv(struct Client *, struct Client *, int, const char **);
  46 static int me_unresv(struct Client *, struct Client *, int, const char **);
  47
  48 struct Message resv_msgtab = {
  49         "RESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  50         {mg_ignore, mg_not_oper, {ms_resv, 4}, {ms_resv, 4}, {me_resv, 5}, {mo_resv, 3}}
  51 };
  52 struct Message unresv_msgtab = {
  53         "UNRESV", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  54         {mg_ignore, mg_not_oper, {ms_unresv, 3}, {ms_unresv, 3}, {me_unresv, 2}, {mo_unresv, 2}}
  55 };
  56
  57 mapi_clist_av1 resv_clist[] = { &resv_msgtab, &unresv_msgtab, NULL };
  58 DECLARE_MODULE_AV1(resv, NULL, NULL, resv_clist, NULL, NULL, "$Revision: 3045 $");
  59
  60 static void parse_resv(struct Client *source_p, const char *name,
  61                         const char *reason, int temp_time);
  62 static void propagate_resv(struct Client *source_p, const char *target,
  63                         int temp_time, const char *name, const char *reason);
  64 static void cluster_resv(struct Client *source_p, int temp_time,
  65                         const char *name, const char *reason);
  66
  67 static void handle_remote_unresv(struct Client *source_p, const char *name);
  68 static void remove_resv(struct Client *source_p, const char *name);
  69 static int remove_resv_from_file(struct Client *source_p, const char *name);
  70
  71 /*
  72  * mo_resv()
  73  *      parv[1] = channel/nick to forbid
  74  *      parv[2] = reason
  75  */
  76 static int
  77 mo_resv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  78 {
  79         const char *name;
  80         const char *reason;
  81         const char *target_server = NULL;
  82         int temp_time;
  83         int loc = 1;
  84
  85         if(!IsOperResv(source_p))
  86         {
  87                 sendto_one(source_p, form_str(ERR_NOPRIVS),
  88                            me.name, source_p->name, "resv");
  89                 return 0;
  90         }
  91
  92         /* RESV [time] <name> [ON <server>] :<reason> */
  93
  94         if((temp_time = valid_temp_time(parv[loc])) >= 0)
  95                 loc++;
  96         /* we just set temp_time to -1! */
  97         else
  98                 temp_time = 0;
  99
 100         name = parv[loc];
 101         loc++;
 102
 103         if((parc >= loc+2) && (irccmp(parv[loc], "ON") == 0))
 104         {
 105                 if(!IsOperRemoteBan(source_p))
 106                 {
 107                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 108                                 me.name, source_p->name, "remoteban");
 109                         return 0;
 110                 }
 111
 112                 target_server = parv[loc+1];
 113                 loc += 2;
 114         }
 115
 116         if(parc <= loc || EmptyString(parv[loc]))
 117         {
 118                 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
 119                            me.name, source_p->name, "RESV");
 120                 return 0;
 121         }
 122
 123         reason = parv[loc];
 124
 125         /* remote resv.. */
 126         if(target_server)
 127         {
 128                 propagate_resv(source_p, target_server, temp_time, name, reason);
 129
 130                 if(match(target_server, me.name) == 0)
 131                         return 0;
 132         }
 133         else if(rb_dlink_list_length(&cluster_conf_list) > 0)
 134                 cluster_resv(source_p, temp_time, name, reason);
 135
 136         parse_resv(source_p, name, reason, temp_time);
 137
 138         return 0;
 139 }
 140
 141 /* ms_resv()
 142  *     parv[1] = target server
 143  *     parv[2] = channel/nick to forbid
 144  *     parv[3] = reason
 145  */
 146 static int
 147 ms_resv(struct Client *client_p, struct Client *source_p,
 148         int parc, const char *parv[])
 149 {
 150         /* source_p  parv[1]        parv[2]  parv[3]
 151          * oper      target server  resv     reason
 152          */
 153         propagate_resv(source_p, parv[1], 0, parv[2], parv[3]);
 154
 155         if(!match(parv[1], me.name))
 156                 return 0;
 157
 158         if(!IsPerson(source_p))
 159                 return 0;
 160
 161         parse_resv(source_p, parv[2], parv[3], 0);
 162         return 0;
 163 }
 164
 165 static int
 166 me_resv(struct Client *client_p, struct Client *source_p,
 167         int parc, const char *parv[])
 168 {
 169         /* time name 0 :reason */
 170         if(!IsPerson(source_p))
 171                 return 0;
 172
 173         parse_resv(source_p, parv[2], parv[4], atoi(parv[1]));
 174         return 0;
 175 }
 176
 177 /* parse_resv()
 178  *
 179  * inputs       - source_p if error messages wanted
 180  *              - thing to resv
 181  *              - reason for resv
 182  * outputs      -
 183  * side effects - will parse the resv and create it if valid
 184  */
 185 static void
 186 parse_resv(struct Client *source_p, const char *name,
 187            const char *reason, int temp_time)
 188 {
 189         struct ConfItem *aconf;
 190
 191         if(!MyClient(source_p) &&
 192            !find_shared_conf(source_p->username, source_p->host,
 193                         source_p->servptr->name,
 194                         (temp_time > 0) ? SHARED_TRESV : SHARED_PRESV))
 195                 return;
 196
 197         if(IsChannelName(name))
 198         {
 199                 if(hash_find_resv(name))
 200                 {
 201                         sendto_one_notice(source_p,
 202                                         ":A RESV has already been placed on channel: %s",
 203                                         name);
 204                         return;
 205                 }
 206
 207                 if(strlen(name) > CHANNELLEN)
 208                 {
 209                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 210                                           name);
 211                         return;
 212                 }
 213
 214                 if(strchr(reason, '"'))
 215                 {
 216                         sendto_one_notice(source_p,
 217                                         ":Invalid character '\"' in comment");
 218                         return;
 219                 }
 220
 221                 aconf = make_conf();
 222                 aconf->status = CONF_RESV_CHANNEL;
 223                 aconf->port = 0;
 224                 aconf->name = rb_strdup(name);
 225                 aconf->passwd = rb_strdup(reason);
 226                 add_to_resv_hash(aconf->name, aconf);
 227
 228                 if(temp_time > 0)
 229                 {
 230                         aconf->hold = rb_current_time() + temp_time;
 231
 232                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 233                                      "%s added temporary %d min. RESV for [%s] [%s]",
 234                                      get_oper_name(source_p), temp_time / 60,
 235                                      name, reason);
 236                         ilog(L_KLINE, "R %s %d %s %s",
 237                                 get_oper_name(source_p), temp_time / 60,
 238                                 name, reason);
 239                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 240                                         temp_time / 60, name);
 241                 }
 242                 else
 243                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 244                                         aconf->passwd, NULL, NULL, 0);
 245         }
 246         else if(clean_resv_nick(name))
 247         {
 248                 if(strlen(name) > NICKLEN*2)
 249                 {
 250                         sendto_one_notice(source_p, ":Invalid RESV length: %s",
 251                                            name);
 252                         return;
 253                 }
 254
 255                 if(strchr(reason, '"'))
 256                 {
 257                         sendto_one_notice(source_p,
 258                                         ":Invalid character '\"' in comment");
 259                         return;
 260                 }
 261
 262                 if(!valid_wild_card_simple(name))
 263                 {
 264                         sendto_one_notice(source_p,
 265                                            ":Please include at least %d non-wildcard "
 266                                            "characters with the resv",
 267                                            ConfigFileEntry.min_nonwildcard_simple);
 268                         return;
 269                 }
 270
 271                 if(find_nick_resv_mask(name))
 272                 {
 273                         sendto_one_notice(source_p,
 274                                            ":A RESV has already been placed on nick: %s",
 275                                            name);
 276                         return;
 277                 }
 278
 279                 aconf = make_conf();
 280                 aconf->status = CONF_RESV_NICK;
 281                 aconf->port = 0;
 282                 aconf->name = rb_strdup(name);
 283                 aconf->passwd = rb_strdup(reason);
 284                 rb_dlinkAddAlloc(aconf, &resv_conf_list);
 285
 286                 if(temp_time > 0)
 287                 {
 288                         aconf->hold = rb_current_time() + temp_time;
 289
 290                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 291                                      "%s added temporary %d min. RESV for [%s] [%s]",
 292                                      get_oper_name(source_p), temp_time / 60,
 293                                      name, reason);
 294                         ilog(L_KLINE, "R %s %d %s %s",
 295                                 get_oper_name(source_p), temp_time / 60,
 296                                 name, reason);
 297                         sendto_one_notice(source_p, ":Added temporary %d min. RESV [%s]",
 298                                         temp_time / 60, name);
 299                 }
 300                 else
 301                         write_confitem(RESV_TYPE, source_p, NULL, aconf->name,
 302                                         aconf->passwd, NULL, NULL, 0);
 303         }
 304         else
 305                 sendto_one_notice(source_p,
 306                                   ":You have specified an invalid resv: [%s]",
 307                                   name);
 308 }
 309
 310 static void
 311 propagate_resv(struct Client *source_p, const char *target,
 312                 int temp_time, const char *name, const char *reason)
 313 {
 314         if(!temp_time)
 315         {
 316                 sendto_match_servs(source_p, target,
 317                                 CAP_CLUSTER, NOCAPS,
 318                                 "RESV %s %s :%s",
 319                                 target, name, reason);
 320                 sendto_match_servs(source_p, target,
 321                                 CAP_ENCAP, CAP_CLUSTER,
 322                                 "ENCAP %s RESV %d %s 0 :%s",
 323                                 target, temp_time, name, reason);
 324         }
 325         else
 326                 sendto_match_servs(source_p, target,
 327                                 CAP_ENCAP, NOCAPS,
 328                                 "ENCAP %s RESV %d %s 0 :%s",
 329                                 target, temp_time, name, reason);
 330 }
 331
 332 static void
 333 cluster_resv(struct Client *source_p, int temp_time, const char *name,
 334                 const char *reason)
 335 {
 336         struct remote_conf *shared_p;
 337         rb_dlink_node *ptr;
 338
 339         RB_DLINK_FOREACH(ptr, cluster_conf_list.head)
 340         {
 341                 shared_p = ptr->data;
 342
 343                 /* old protocol cant handle temps, and we dont really want
 344                  * to convert them to perm.. --fl
 345                  */
 346                 if(!temp_time)
 347                 {
 348                         if(!(shared_p->flags & SHARED_PRESV))
 349                                 continue;
 350
 351                         sendto_match_servs(source_p, shared_p->server,
 352                                         CAP_CLUSTER, NOCAPS,
 353                                         "RESV %s %s :%s",
 354                                         shared_p->server, name, reason);
 355                         sendto_match_servs(source_p, shared_p->server,
 356                                         CAP_ENCAP, CAP_CLUSTER,
 357                                         "ENCAP %s RESV 0 %s 0 :%s",
 358                                         shared_p->server, name, reason);
 359                 }
 360                 else if(shared_p->flags & SHARED_TRESV)
 361                         sendto_match_servs(source_p, shared_p->server,
 362                                         CAP_ENCAP, NOCAPS,
 363                                         "ENCAP %s RESV %d %s 0 :%s",
 364                                         shared_p->server, temp_time, name, reason);
 365         }
 366 }
 367
 368
 369 /*
 370  * mo_unresv()
 371  *     parv[1] = channel/nick to unforbid
 372  */
 373 static int
 374 mo_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 375 {
 376         if(!IsOperResv(source_p))
 377         {
 378                 sendto_one(source_p, form_str(ERR_NOPRIVS),
 379                            me.name, source_p->name, "resv");
 380                 return 0;
 381         }
 382
 383         if((parc == 4) && (irccmp(parv[2], "ON") == 0))
 384         {
 385                 if(!IsOperRemoteBan(source_p))
 386                 {
 387                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 388                                 me.name, source_p->name, "remoteban");
 389                         return 0;
 390                 }
 391
 392                 propagate_generic(source_p, "UNRESV", parv[3], CAP_CLUSTER,
 393                                 "%s", parv[1]);
 394
 395                 if(match(parv[3], me.name) == 0)
 396                         return 0;
 397         }
 398         else if(rb_dlink_list_length(&cluster_conf_list) > 0)
 399                 cluster_generic(source_p, "UNRESV", SHARED_UNRESV, CAP_CLUSTER,
 400                                 "%s", parv[1]);
 401
 402         remove_resv(source_p, parv[1]);
 403         return 0;
 404 }
 405
 406 /* ms_unresv()
 407  *     parv[1] = target server
 408  *     parv[2] = resv to remove
 409  */
 410 static int
 411 ms_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 412 {
 413         /* source_p  parv[1]        parv[2]
 414          * oper      target server  resv to remove
 415          */
 416         propagate_generic(source_p, "UNRESV", parv[1], CAP_CLUSTER,
 417                         "%s", parv[2]);
 418
 419         if(!match(parv[1], me.name))
 420                 return 0;
 421
 422         if(!IsPerson(source_p))
 423                 return 0;
 424
 425         handle_remote_unresv(source_p, parv[2]);
 426         return 0;
 427 }
 428
 429 static int
 430 me_unresv(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 431 {
 432         /* name */
 433         if(!IsPerson(source_p))
 434                 return 0;
 435
 436         handle_remote_unresv(source_p, parv[1]);
 437         return 0;
 438 }
 439
 440 static void
 441 handle_remote_unresv(struct Client *source_p, const char *name)
 442 {
 443         if(!find_shared_conf(source_p->username, source_p->host,
 444                                 source_p->servptr->name, SHARED_UNRESV))
 445                 return;
 446
 447         remove_resv(source_p, name);
 448
 449         return;
 450 }
 451
 452 static void
 453 remove_resv(struct Client *source_p, const char *name)
 454 {
 455         struct ConfItem *aconf = NULL;
 456
 457         if(IsChannelName(name))
 458         {
 459                 if((aconf = hash_find_resv(name)) == NULL)
 460                 {
 461                         sendto_one_notice(source_p, ":No RESV for %s", name);
 462                         return;
 463                 }
 464
 465                 if(!aconf->hold)
 466                 {
 467                         if (!remove_resv_from_file(source_p, name))
 468                                 return;
 469                 }
 470                 else
 471                 {
 472                         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 473                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 474                                         "%s has removed the RESV for: [%s]",
 475                                         get_oper_name(source_p), name);
 476                         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 477                 }
 478                 del_from_resv_hash(name, aconf);
 479         }
 480         else
 481         {
 482                 rb_dlink_node *ptr;
 483
 484                 RB_DLINK_FOREACH(ptr, resv_conf_list.head)
 485                 {
 486                         aconf = ptr->data;
 487
 488                         if(irccmp(aconf->name, name))
 489                                 aconf = NULL;
 490                         else
 491                                 break;
 492                 }
 493
 494                 if(aconf == NULL)
 495                 {
 496                         sendto_one_notice(source_p, ":No RESV for %s", name);
 497                         return;
 498                 }
 499
 500                 if(!aconf->hold)
 501                 {
 502                         if (!remove_resv_from_file(source_p, name))
 503                                 return;
 504                 }
 505                 else
 506                 {
 507                         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 508                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 509                                         "%s has removed the RESV for: [%s]",
 510                                         get_oper_name(source_p), name);
 511                         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 512                 }
 513                 /* already have ptr from the loop above.. */
 514                 rb_dlinkDestroy(ptr, &resv_conf_list);
 515         }
 516         free_conf(aconf);
 517
 518         return;
 519 }
 520
 521 /* remove_resv_from_file()
 522  *
 523  * inputs       - client removing the resv
 524  *              - resv to remove
 525  * outputs      -
 526  * side effects - resv if found, is removed from conf
 527  *              - does not touch resv hash or resv_conf_list
 528  */
 529 static int
 530 remove_resv_from_file(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         rb_sprintf(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 0;
 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 0;
 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                 rb_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         if (fclose(out))
 604                 error_on_write = YES;
 605
 606         if(error_on_write)
 607         {
 608                 sendto_one_notice(source_p, ":Couldn't write temp resv file, aborted");
 609                 return 0;
 610         }
 611         else if(!found_resv)
 612         {
 613                 sendto_one_notice(source_p, ":Cannot find RESV for %s in file", name);
 614
 615                 if(temppath != NULL)
 616                         (void) unlink(temppath);
 617
 618                 return 0;
 619         }
 620
 621         if (rename(temppath, filename))
 622         {
 623                 sendto_one_notice(source_p, ":Couldn't rename temp file, aborted");
 624                 return 0;
 625         }
 626
 627         sendto_one_notice(source_p, ":RESV for [%s] is removed", name);
 628         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 629                              "%s has removed the RESV for: [%s]", get_oper_name(source_p), name);
 630         ilog(L_KLINE, "UR %s %s", get_oper_name(source_p), name);
 631
 632         return 1;
 633 }