src/s_newconf.c

   1 /*
   2  * ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd).
   3  * s_newconf.c - code for dealing with conf stuff
   4  *
   5  * Copyright (C) 2004 Lee Hardy <lee@leeh.co.uk>
   6  * Copyright (C) 2004-2005 ircd-ratbox development team
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are
  10  * met:
  11  *
  12  * 1.Redistributions of source code must retain the above copyright notice,
  13  *   this list of conditions and the following disclaimer.
  14  * 2.Redistributions in binary form must reproduce the above copyright
  15  *   notice, this list of conditions and the following disclaimer in the
  16  *   documentation and/or other materials provided with the distribution.
  17  * 3.The name of the author may not be used to endorse or promote products
  18  *   derived from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  22  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  23  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  24  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  25  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  26  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  28  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  29  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * $Id: s_newconf.c 3508 2007-06-04 16:04:49Z jilles $
  33  */
  34
  35 #include "stdinc.h"
  36 #include "ircd_defs.h"
  37 #include "common.h"
  38 #include "s_conf.h"
  39 #include "s_newconf.h"
  40 #include "client.h"
  41 #include "s_serv.h"
  42 #include "send.h"
  43 #include "hostmask.h"
  44 #include "newconf.h"
  45 #include "hash.h"
  46 #include "irc_dictionary.h"
  47
  48 rb_dlink_list shared_conf_list;
  49 rb_dlink_list cluster_conf_list;
  50 rb_dlink_list oper_conf_list;
  51 rb_dlink_list hubleaf_conf_list;
  52 rb_dlink_list server_conf_list;
  53 rb_dlink_list xline_conf_list;
  54 rb_dlink_list resv_conf_list;   /* nicks only! */
  55 rb_dlink_list nd_list;          /* nick delay */
  56 rb_dlink_list tgchange_list;
  57
  58 rb_patricia_tree_t *tgchange_tree;
  59
  60 static rb_bh *nd_heap = NULL;
  61
  62 static void expire_temp_rxlines(void *unused);
  63 static void expire_nd_entries(void *unused);
  64
  65 struct ev_entry *expire_nd_entries_ev = NULL;
  66 struct ev_entry *expire_temp_rxlines_ev = NULL;
  67
  68 void
  69 init_s_newconf(void)
  70 {
  71         tgchange_tree = rb_new_patricia(PATRICIA_BITS);
  72         nd_heap = rb_bh_create(sizeof(struct nd_entry), ND_HEAP_SIZE, "nd_heap");
  73         expire_nd_entries_ev = rb_event_addish("expire_nd_entries", expire_nd_entries, NULL, 30);
  74         expire_temp_rxlines_ev = rb_event_addish("expire_temp_rxlines", expire_temp_rxlines, NULL, 60);
  75 }
  76
  77 void
  78 clear_s_newconf(void)
  79 {
  80         struct server_conf *server_p;
  81         rb_dlink_node *ptr;
  82         rb_dlink_node *next_ptr;
  83
  84         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, shared_conf_list.head)
  85         {
  86                 /* ptr here is ptr->data->node */
  87                 rb_dlinkDelete(ptr, &shared_conf_list);
  88                 free_remote_conf(ptr->data);
  89         }
  90
  91         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, cluster_conf_list.head)
  92         {
  93                 rb_dlinkDelete(ptr, &cluster_conf_list);
  94                 free_remote_conf(ptr->data);
  95         }
  96
  97         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, hubleaf_conf_list.head)
  98         {
  99                 rb_dlinkDelete(ptr, &hubleaf_conf_list);
 100                 free_remote_conf(ptr->data);
 101         }
 102
 103         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, oper_conf_list.head)
 104         {
 105                 free_oper_conf(ptr->data);
 106                 rb_dlinkDestroy(ptr, &oper_conf_list);
 107         }
 108
 109         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, server_conf_list.head)
 110         {
 111                 server_p = ptr->data;
 112
 113                 if(!server_p->servers)
 114                 {
 115                         rb_dlinkDelete(ptr, &server_conf_list);
 116                         free_server_conf(ptr->data);
 117                 }
 118                 else
 119                         server_p->flags |= SERVER_ILLEGAL;
 120         }
 121 }
 122
 123 void
 124 clear_s_newconf_bans(void)
 125 {
 126         struct ConfItem *aconf;
 127         rb_dlink_node *ptr, *next_ptr;
 128
 129         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, xline_conf_list.head)
 130         {
 131                 aconf = ptr->data;
 132
 133                 if(aconf->hold)
 134                         continue;
 135
 136                 free_conf(aconf);
 137                 rb_dlinkDestroy(ptr, &xline_conf_list);
 138         }
 139
 140         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, resv_conf_list.head)
 141         {
 142                 aconf = ptr->data;
 143
 144                 /* temporary resv */
 145                 if(aconf->hold)
 146                         continue;
 147
 148                 free_conf(aconf);
 149                 rb_dlinkDestroy(ptr, &resv_conf_list);
 150         }
 151
 152         clear_resv_hash();
 153 }
 154
 155 struct remote_conf *
 156 make_remote_conf(void)
 157 {
 158         struct remote_conf *remote_p = rb_malloc(sizeof(struct remote_conf));
 159         return remote_p;
 160 }
 161
 162 void
 163 free_remote_conf(struct remote_conf *remote_p)
 164 {
 165         s_assert(remote_p != NULL);
 166         if(remote_p == NULL)
 167                 return;
 168
 169         rb_free(remote_p->username);
 170         rb_free(remote_p->host);
 171         rb_free(remote_p->server);
 172         rb_free(remote_p);
 173 }
 174
 175 int
 176 find_shared_conf(const char *username, const char *host,
 177                 const char *server, int flags)
 178 {
 179         struct remote_conf *shared_p;
 180         rb_dlink_node *ptr;
 181
 182         RB_DLINK_FOREACH(ptr, shared_conf_list.head)
 183         {
 184                 shared_p = ptr->data;
 185
 186                 if(match(shared_p->username, username) &&
 187                    match(shared_p->host, host) &&
 188                    match(shared_p->server, server))
 189                 {
 190                         if(shared_p->flags & flags)
 191                                 return YES;
 192                         else
 193                                 return NO;
 194                 }
 195         }
 196
 197         return NO;
 198 }
 199
 200 void
 201 propagate_generic(struct Client *source_p, const char *command,
 202                 const char *target, int cap, const char *format, ...)
 203 {
 204         char buffer[BUFSIZE];
 205         va_list args;
 206
 207         va_start(args, format);
 208         rb_vsnprintf(buffer, sizeof(buffer), format, args);
 209         va_end(args);
 210
 211         sendto_match_servs(source_p, target, cap, NOCAPS,
 212                         "%s %s %s",
 213                         command, target, buffer);
 214         sendto_match_servs(source_p, target, CAP_ENCAP, cap,
 215                         "ENCAP %s %s %s",
 216                         target, command, buffer);
 217 }
 218
 219 void
 220 cluster_generic(struct Client *source_p, const char *command,
 221                 int cltype, int cap, const char *format, ...)
 222 {
 223         char buffer[BUFSIZE];
 224         struct remote_conf *shared_p;
 225         va_list args;
 226         rb_dlink_node *ptr;
 227
 228         va_start(args, format);
 229         rb_vsnprintf(buffer, sizeof(buffer), format, args);
 230         va_end(args);
 231
 232         RB_DLINK_FOREACH(ptr, cluster_conf_list.head)
 233         {
 234                 shared_p = ptr->data;
 235
 236                 if(!(shared_p->flags & cltype))
 237                         continue;
 238
 239                 sendto_match_servs(source_p, shared_p->server, cap, NOCAPS,
 240                                 "%s %s %s",
 241                                 command, shared_p->server, buffer);
 242                 sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, cap,
 243                                 "ENCAP %s %s %s",
 244                                 shared_p->server, command, buffer);
 245         }
 246 }
 247
 248 struct oper_conf *
 249 make_oper_conf(void)
 250 {
 251         struct oper_conf *oper_p = rb_malloc(sizeof(struct oper_conf));
 252         return oper_p;
 253 }
 254
 255 void
 256 free_oper_conf(struct oper_conf *oper_p)
 257 {
 258         s_assert(oper_p != NULL);
 259         if(oper_p == NULL)
 260                 return;
 261
 262         rb_free(oper_p->username);
 263         rb_free(oper_p->host);
 264         rb_free(oper_p->name);
 265         rb_free(oper_p->certfp);
 266
 267         if(oper_p->passwd)
 268         {
 269                 memset(oper_p->passwd, 0, strlen(oper_p->passwd));
 270                 rb_free(oper_p->passwd);
 271         }
 272
 273 #ifdef HAVE_LIBCRYPTO
 274         rb_free(oper_p->rsa_pubkey_file);
 275
 276         if(oper_p->rsa_pubkey)
 277                 RSA_free(oper_p->rsa_pubkey);
 278 #endif
 279
 280         rb_free(oper_p);
 281 }
 282
 283 struct oper_conf *
 284 find_oper_conf(const char *username, const char *host, const char *locip, const char *name)
 285 {
 286         struct oper_conf *oper_p;
 287         struct rb_sockaddr_storage ip, cip;
 288         char addr[HOSTLEN+1];
 289         int bits, cbits;
 290         rb_dlink_node *ptr;
 291
 292         parse_netmask(locip, (struct sockaddr *)&cip, &cbits);
 293
 294         RB_DLINK_FOREACH(ptr, oper_conf_list.head)
 295         {
 296                 oper_p = ptr->data;
 297
 298                 /* name/username doesnt match.. */
 299                 if(irccmp(oper_p->name, name) || !match(oper_p->username, username))
 300                         continue;
 301
 302                 rb_strlcpy(addr, oper_p->host, sizeof(addr));
 303
 304                 if(parse_netmask(addr, (struct sockaddr *)&ip, &bits) != HM_HOST)
 305                 {
 306                         if(ip.ss_family == cip.ss_family &&
 307                            comp_with_mask_sock((struct sockaddr *)&ip, (struct sockaddr *)&cip, bits))
 308                                 return oper_p;
 309                 }
 310
 311                 /* we have to compare against the host as well, because its
 312                  * valid to set a spoof to an IP, which if we only compare
 313                  * in ip form to sockhost will not necessarily match --anfl
 314                  */
 315                 if(match(oper_p->host, host))
 316                         return oper_p;
 317         }
 318
 319         return NULL;
 320 }
 321
 322 struct server_conf *
 323 make_server_conf(void)
 324 {
 325         struct server_conf *server_p = rb_malloc(sizeof(struct server_conf));
 326         server_p->aftype = AF_INET;
 327         return server_p;
 328 }
 329
 330 void
 331 free_server_conf(struct server_conf *server_p)
 332 {
 333         s_assert(server_p != NULL);
 334         if(server_p == NULL)
 335                 return;
 336
 337         if(!EmptyString(server_p->passwd))
 338         {
 339                 memset(server_p->passwd, 0, strlen(server_p->passwd));
 340                 rb_free(server_p->passwd);
 341         }
 342
 343         if(!EmptyString(server_p->spasswd))
 344         {
 345                 memset(server_p->spasswd, 0, strlen(server_p->spasswd));
 346                 rb_free(server_p->spasswd);
 347         }
 348
 349         rb_free(server_p->name);
 350         rb_free(server_p->host);
 351         rb_free(server_p->class_name);
 352         rb_free(server_p);
 353 }
 354
 355 void
 356 add_server_conf(struct server_conf *server_p)
 357 {
 358         if(EmptyString(server_p->class_name))
 359         {
 360                 server_p->class_name = rb_strdup("default");
 361                 server_p->class = default_class;
 362                 return;
 363         }
 364
 365         server_p->class = find_class(server_p->class_name);
 366
 367         if(server_p->class == default_class)
 368         {
 369                 conf_report_error("Warning connect::class invalid for %s",
 370                                 server_p->name);
 371
 372                 rb_free(server_p->class_name);
 373                 server_p->class_name = rb_strdup("default");
 374         }
 375
 376         if(strchr(server_p->host, '*') || strchr(server_p->host, '?'))
 377                 return;
 378 }
 379
 380 struct server_conf *
 381 find_server_conf(const char *name)
 382 {
 383         struct server_conf *server_p;
 384         rb_dlink_node *ptr;
 385
 386         RB_DLINK_FOREACH(ptr, server_conf_list.head)
 387         {
 388                 server_p = ptr->data;
 389
 390                 if(ServerConfIllegal(server_p))
 391                         continue;
 392
 393                 if(match(name, server_p->name))
 394                         return server_p;
 395         }
 396
 397         return NULL;
 398 }
 399
 400 void
 401 attach_server_conf(struct Client *client_p, struct server_conf *server_p)
 402 {
 403         /* already have an attached conf */
 404         if(client_p->localClient->att_sconf)
 405         {
 406                 /* short circuit this special case :) */
 407                 if(client_p->localClient->att_sconf == server_p)
 408                         return;
 409
 410                 detach_server_conf(client_p);
 411         }
 412
 413         CurrUsers(server_p->class)++;
 414
 415         client_p->localClient->att_sconf = server_p;
 416         server_p->servers++;
 417 }
 418
 419 void
 420 detach_server_conf(struct Client *client_p)
 421 {
 422         struct server_conf *server_p = client_p->localClient->att_sconf;
 423
 424         if(server_p == NULL)
 425                 return;
 426
 427         client_p->localClient->att_sconf = NULL;
 428         server_p->servers--;
 429         CurrUsers(server_p->class)--;
 430
 431         if(ServerConfIllegal(server_p) && !server_p->servers)
 432         {
 433                 /* the class this one is using may need destroying too */
 434                 if(MaxUsers(server_p->class) < 0 && CurrUsers(server_p->class) <= 0)
 435                         free_class(server_p->class);
 436
 437                 rb_dlinkDelete(&server_p->node, &server_conf_list);
 438                 free_server_conf(server_p);
 439         }
 440 }
 441
 442 void
 443 set_server_conf_autoconn(struct Client *source_p, const char *name, int newval)
 444 {
 445         struct server_conf *server_p;
 446
 447         if((server_p = find_server_conf(name)) != NULL)
 448         {
 449                 if(newval)
 450                         server_p->flags |= SERVER_AUTOCONN;
 451                 else
 452                         server_p->flags &= ~SERVER_AUTOCONN;
 453
 454                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 455                                 "%s has changed AUTOCONN for %s to %i",
 456                                 get_oper_name(source_p), name, newval);
 457         }
 458         else
 459                 sendto_one_notice(source_p, ":Can't find %s", name);
 460 }
 461
 462 void
 463 disable_server_conf_autoconn(const char *name)
 464 {
 465         struct server_conf *server_p;
 466
 467         server_p = find_server_conf(name);
 468         if(server_p != NULL && server_p->flags & SERVER_AUTOCONN)
 469         {
 470                 server_p->flags &= ~SERVER_AUTOCONN;
 471
 472                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 473                                 "Disabling AUTOCONN for %s because of error",
 474                                 name);
 475                 ilog(L_SERVER, "Disabling AUTOCONN for %s because of error",
 476                                 name);
 477         }
 478 }
 479
 480 struct ConfItem *
 481 find_xline(const char *gecos, int counter)
 482 {
 483         struct ConfItem *aconf;
 484         rb_dlink_node *ptr;
 485
 486         RB_DLINK_FOREACH(ptr, xline_conf_list.head)
 487         {
 488                 aconf = ptr->data;
 489
 490                 if(match_esc(aconf->host, gecos))
 491                 {
 492                         if(counter)
 493                                 aconf->port++;
 494                         return aconf;
 495                 }
 496         }
 497
 498         return NULL;
 499 }
 500
 501 struct ConfItem *
 502 find_xline_mask(const char *gecos)
 503 {
 504         struct ConfItem *aconf;
 505         rb_dlink_node *ptr;
 506
 507         RB_DLINK_FOREACH(ptr, xline_conf_list.head)
 508         {
 509                 aconf = ptr->data;
 510
 511                 if(!irccmp(aconf->host, gecos))
 512                         return aconf;
 513         }
 514
 515         return NULL;
 516 }
 517
 518 struct ConfItem *
 519 find_nick_resv(const char *name)
 520 {
 521         struct ConfItem *aconf;
 522         rb_dlink_node *ptr;
 523
 524         RB_DLINK_FOREACH(ptr, resv_conf_list.head)
 525         {
 526                 aconf = ptr->data;
 527
 528                 if(match_esc(aconf->host, name))
 529                 {
 530                         aconf->port++;
 531                         return aconf;
 532                 }
 533         }
 534
 535         return NULL;
 536 }
 537
 538 struct ConfItem *
 539 find_nick_resv_mask(const char *name)
 540 {
 541         struct ConfItem *aconf;
 542         rb_dlink_node *ptr;
 543
 544         RB_DLINK_FOREACH(ptr, resv_conf_list.head)
 545         {
 546                 aconf = ptr->data;
 547
 548                 if(!irccmp(aconf->host, name))
 549                         return aconf;
 550         }
 551
 552         return NULL;
 553 }
 554
 555 /* clean_resv_nick()
 556  *
 557  * inputs       - nick
 558  * outputs      - 1 if nick is vaild resv, 0 otherwise
 559  * side effects -
 560  */
 561 int
 562 clean_resv_nick(const char *nick)
 563 {
 564         char tmpch;
 565         int as = 0;
 566         int q = 0;
 567         int ch = 0;
 568
 569         if(*nick == '-' || IsDigit(*nick))
 570                 return 0;
 571
 572         while ((tmpch = *nick++))
 573         {
 574                 if(tmpch == '?' || tmpch == '@' || tmpch == '#')
 575                         q++;
 576                 else if(tmpch == '*')
 577                         as++;
 578                 else if(IsNickChar(tmpch))
 579                         ch++;
 580                 else
 581                         return 0;
 582         }
 583
 584         if(!ch && as)
 585                 return 0;
 586
 587         return 1;
 588 }
 589
 590 /* valid_wild_card_simple()
 591  *
 592  * inputs       - "thing" to test
 593  * outputs      - 1 if enough wildcards, else 0
 594  * side effects -
 595  */
 596 int
 597 valid_wild_card_simple(const char *data)
 598 {
 599         const char *p;
 600         char tmpch;
 601         int nonwild = 0;
 602         int wild = 0;
 603
 604         /* check the string for minimum number of nonwildcard chars */
 605         p = data;
 606
 607         while((tmpch = *p++))
 608         {
 609                 /* found an escape, p points to the char after it, so skip
 610                  * that and move on.
 611                  */
 612                 if(tmpch == '\\' && *p)
 613                 {
 614                         p++;
 615                         if(++nonwild >= ConfigFileEntry.min_nonwildcard_simple)
 616                                 return 1;
 617                 }
 618                 else if(!IsMWildChar(tmpch))
 619                 {
 620                         /* if we have enough nonwildchars, return */
 621                         if(++nonwild >= ConfigFileEntry.min_nonwildcard_simple)
 622                                 return 1;
 623                 }
 624                 else
 625                         wild++;
 626         }
 627
 628         /* strings without wilds are also ok */
 629         return wild == 0;
 630 }
 631
 632 time_t
 633 valid_temp_time(const char *p)
 634 {
 635         time_t result = 0;
 636
 637         while(*p)
 638         {
 639                 if(IsDigit(*p))
 640                 {
 641                         result *= 10;
 642                         result += ((*p) & 0xF);
 643                         p++;
 644                 }
 645                 else
 646                         return -1;
 647         }
 648
 649         if(result > (60 * 24 * 7 * 52))
 650                 result = (60 * 24 * 7 * 52);
 651
 652         return(result * 60);
 653 }
 654
 655 /* Propagated bans are expired elsewhere. */
 656 static void
 657 expire_temp_rxlines(void *unused)
 658 {
 659         struct ConfItem *aconf;
 660         rb_dlink_node *ptr;
 661         rb_dlink_node *next_ptr;
 662         int i;
 663
 664         HASH_WALK_SAFE(i, R_MAX, ptr, next_ptr, resvTable)
 665         {
 666                 aconf = ptr->data;
 667
 668                 if(aconf->lifetime != 0)
 669                         continue;
 670                 if(aconf->hold && aconf->hold <= rb_current_time())
 671                 {
 672                         if(ConfigFileEntry.tkline_expire_notices)
 673                                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 674                                                 "Temporary RESV for [%s] expired",
 675                                                 aconf->host);
 676
 677                         free_conf(aconf);
 678                         rb_dlinkDestroy(ptr, &resvTable[i]);
 679                 }
 680         }
 681         HASH_WALK_END
 682
 683         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, resv_conf_list.head)
 684         {
 685                 aconf = ptr->data;
 686
 687                 if(aconf->lifetime != 0)
 688                         continue;
 689                 if(aconf->hold && aconf->hold <= rb_current_time())
 690                 {
 691                         if(ConfigFileEntry.tkline_expire_notices)
 692                                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 693                                                 "Temporary RESV for [%s] expired",
 694                                                 aconf->host);
 695                         free_conf(aconf);
 696                         rb_dlinkDestroy(ptr, &resv_conf_list);
 697                 }
 698         }
 699
 700         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, xline_conf_list.head)
 701         {
 702                 aconf = ptr->data;
 703
 704                 if(aconf->lifetime != 0)
 705                         continue;
 706                 if(aconf->hold && aconf->hold <= rb_current_time())
 707                 {
 708                         if(ConfigFileEntry.tkline_expire_notices)
 709                                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 710                                                 "Temporary X-line for [%s] expired",
 711                                                 aconf->host);
 712                         free_conf(aconf);
 713                         rb_dlinkDestroy(ptr, &xline_conf_list);
 714                 }
 715         }
 716 }
 717
 718 unsigned long
 719 get_nd_count(void)
 720 {
 721         return(rb_dlink_list_length(&nd_list));
 722 }
 723
 724 void
 725 add_nd_entry(const char *name)
 726 {
 727         struct nd_entry *nd;
 728
 729         if(irc_dictionary_find(nd_dict, name) != NULL)
 730                 return;
 731
 732         nd = rb_bh_alloc(nd_heap);
 733
 734         rb_strlcpy(nd->name, name, sizeof(nd->name));
 735         nd->expire = rb_current_time() + ConfigFileEntry.nick_delay;
 736
 737         /* this list is ordered */
 738         rb_dlinkAddTail(nd, &nd->lnode, &nd_list);
 739
 740         irc_dictionary_add(nd_dict, nd->name, nd);
 741 }
 742
 743 void
 744 free_nd_entry(struct nd_entry *nd)
 745 {
 746         irc_dictionary_delete(nd_dict, nd->name);
 747
 748         rb_dlinkDelete(&nd->lnode, &nd_list);
 749         rb_bh_free(nd_heap, nd);
 750 }
 751
 752 void
 753 expire_nd_entries(void *unused)
 754 {
 755         struct nd_entry *nd;
 756         rb_dlink_node *ptr;
 757         rb_dlink_node *next_ptr;
 758
 759         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, nd_list.head)
 760         {
 761                 nd = ptr->data;
 762
 763                 /* this list is ordered - we can stop when we hit the first
 764                  * entry that doesnt expire..
 765                  */
 766                 if(nd->expire > rb_current_time())
 767                         return;
 768
 769                 free_nd_entry(nd);
 770         }
 771 }
 772
 773 void
 774 add_tgchange(const char *host)
 775 {
 776         tgchange *target;
 777         rb_patricia_node_t *pnode;
 778
 779         if(find_tgchange(host))
 780                 return;
 781
 782         target = rb_malloc(sizeof(tgchange));
 783         pnode = make_and_lookup(tgchange_tree, host);
 784
 785         pnode->data = target;
 786         target->pnode = pnode;
 787
 788         target->ip = rb_strdup(host);
 789         target->expiry = rb_current_time() + (60*60*12);
 790
 791         rb_dlinkAdd(target, &target->node, &tgchange_list);
 792 }
 793
 794 tgchange *
 795 find_tgchange(const char *host)
 796 {
 797         rb_patricia_node_t *pnode;
 798
 799         if((pnode = rb_match_exact_string(tgchange_tree, host)))
 800                 return pnode->data;
 801
 802         return NULL;
 803 }
 804