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 "sprintf_irc.h"
  47 #include "irc_dictionary.h"
  48
  49 rb_dlink_list shared_conf_list;
  50 rb_dlink_list cluster_conf_list;
  51 rb_dlink_list oper_conf_list;
  52 rb_dlink_list hubleaf_conf_list;
  53 rb_dlink_list server_conf_list;
  54 rb_dlink_list xline_conf_list;
  55 rb_dlink_list resv_conf_list;   /* nicks only! */
  56 rb_dlink_list nd_list;          /* nick delay */
  57 rb_dlink_list tgchange_list;
  58
  59 rb_patricia_tree_t *tgchange_tree;
  60
  61 static BlockHeap *nd_heap = NULL;
  62
  63 static void expire_temp_rxlines(void *unused);
  64 static void expire_nd_entries(void *unused);
  65
  66 void
  67 init_s_newconf(void)
  68 {
  69         tgchange_tree = New_Patricia(PATRICIA_BITS);
  70         nd_heap = BlockHeapCreate(sizeof(struct nd_entry), ND_HEAP_SIZE);
  71         eventAddIsh("expire_nd_entries", expire_nd_entries, NULL, 30);
  72         eventAddIsh("expire_temp_rxlines", expire_temp_rxlines, NULL, 60);
  73 }
  74
  75 void
  76 clear_s_newconf(void)
  77 {
  78         struct server_conf *server_p;
  79         rb_dlink_node *ptr;
  80         rb_dlink_node *next_ptr;
  81
  82         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, shared_conf_list.head)
  83         {
  84                 /* ptr here is ptr->data->node */
  85                 rb_dlinkDelete(ptr, &shared_conf_list);
  86                 free_remote_conf(ptr->data);
  87         }
  88
  89         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, cluster_conf_list.head)
  90         {
  91                 rb_dlinkDelete(ptr, &cluster_conf_list);
  92                 free_remote_conf(ptr->data);
  93         }
  94
  95         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, hubleaf_conf_list.head)
  96         {
  97                 rb_dlinkDelete(ptr, &hubleaf_conf_list);
  98                 free_remote_conf(ptr->data);
  99         }
 100
 101         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, oper_conf_list.head)
 102         {
 103                 free_oper_conf(ptr->data);
 104                 rb_dlinkDestroy(ptr, &oper_conf_list);
 105         }
 106
 107         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, server_conf_list.head)
 108         {
 109                 server_p = ptr->data;
 110
 111                 if(!server_p->servers)
 112                 {
 113                         rb_dlinkDelete(ptr, &server_conf_list);
 114                         free_server_conf(ptr->data);
 115                 }
 116                 else
 117                         server_p->flags |= SERVER_ILLEGAL;
 118         }
 119 }
 120
 121 void
 122 clear_s_newconf_bans(void)
 123 {
 124         struct ConfItem *aconf;
 125         rb_dlink_node *ptr, *next_ptr;
 126
 127         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, xline_conf_list.head)
 128         {
 129                 aconf = ptr->data;
 130
 131                 if(aconf->hold)
 132                         continue;
 133
 134                 free_conf(aconf);
 135                 rb_dlinkDestroy(ptr, &xline_conf_list);
 136         }
 137
 138         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, resv_conf_list.head)
 139         {
 140                 aconf = ptr->data;
 141
 142                 /* temporary resv */
 143                 if(aconf->hold)
 144                         continue;
 145
 146                 free_conf(aconf);
 147                 rb_dlinkDestroy(ptr, &resv_conf_list);
 148         }
 149
 150         clear_resv_hash();
 151 }
 152
 153 struct remote_conf *
 154 make_remote_conf(void)
 155 {
 156         struct remote_conf *remote_p = MyMalloc(sizeof(struct remote_conf));
 157         return remote_p;
 158 }
 159
 160 void
 161 free_remote_conf(struct remote_conf *remote_p)
 162 {
 163         s_assert(remote_p != NULL);
 164         if(remote_p == NULL)
 165                 return;
 166
 167         rb_free(remote_p->username);
 168         rb_free(remote_p->host);
 169         rb_free(remote_p->server);
 170         rb_free(remote_p);
 171 }
 172
 173 int
 174 find_shared_conf(const char *username, const char *host,
 175                 const char *server, int flags)
 176 {
 177         struct remote_conf *shared_p;
 178         rb_dlink_node *ptr;
 179
 180         RB_DLINK_FOREACH(ptr, shared_conf_list.head)
 181         {
 182                 shared_p = ptr->data;
 183
 184                 if(match(shared_p->username, username) &&
 185                    match(shared_p->host, host) &&
 186                    match(shared_p->server, server))
 187                 {
 188                         if(shared_p->flags & flags)
 189                                 return YES;
 190                         else
 191                                 return NO;
 192                 }
 193         }
 194
 195         return NO;
 196 }
 197
 198 void
 199 propagate_generic(struct Client *source_p, const char *command,
 200                 const char *target, int cap, const char *format, ...)
 201 {
 202         char buffer[BUFSIZE];
 203         va_list args;
 204
 205         va_start(args, format);
 206         ircvsnprintf(buffer, sizeof(buffer), format, args);
 207         va_end(args);
 208
 209         sendto_match_servs(source_p, target, cap, NOCAPS,
 210                         "%s %s %s",
 211                         command, target, buffer);
 212         sendto_match_servs(source_p, target, CAP_ENCAP, cap,
 213                         "ENCAP %s %s %s",
 214                         target, command, buffer);
 215 }
 216
 217 void
 218 cluster_generic(struct Client *source_p, const char *command,
 219                 int cltype, int cap, const char *format, ...)
 220 {
 221         char buffer[BUFSIZE];
 222         struct remote_conf *shared_p;
 223         va_list args;
 224         rb_dlink_node *ptr;
 225
 226         va_start(args, format);
 227         ircvsnprintf(buffer, sizeof(buffer), format, args);
 228         va_end(args);
 229
 230         RB_DLINK_FOREACH(ptr, cluster_conf_list.head)
 231         {
 232                 shared_p = ptr->data;
 233
 234                 if(!(shared_p->flags & cltype))
 235                         continue;
 236
 237                 sendto_match_servs(source_p, shared_p->server, cap, NOCAPS,
 238                                 "%s %s %s",
 239                                 command, shared_p->server, buffer);
 240                 sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, cap,
 241                                 "ENCAP %s %s %s",
 242                                 shared_p->server, command, buffer);
 243         }
 244 }
 245
 246 struct oper_conf *
 247 make_oper_conf(void)
 248 {
 249         struct oper_conf *oper_p = MyMalloc(sizeof(struct oper_conf));
 250         return oper_p;
 251 }
 252
 253 void
 254 free_oper_conf(struct oper_conf *oper_p)
 255 {
 256         s_assert(oper_p != NULL);
 257         if(oper_p == NULL)
 258                 return;
 259
 260         rb_free(oper_p->username);
 261         rb_free(oper_p->host);
 262         rb_free(oper_p->name);
 263
 264         if(oper_p->passwd)
 265         {
 266                 memset(oper_p->passwd, 0, strlen(oper_p->passwd));
 267                 rb_free(oper_p->passwd);
 268         }
 269
 270 #ifdef HAVE_LIBCRYPTO
 271         rb_free(oper_p->rsa_pubkey_file);
 272
 273         if(oper_p->rsa_pubkey)
 274                 RSA_free(oper_p->rsa_pubkey);
 275 #endif
 276
 277         rb_free(oper_p);
 278 }
 279
 280 struct oper_conf *
 281 find_oper_conf(const char *username, const char *host, const char *locip, const char *name)
 282 {
 283         struct oper_conf *oper_p;
 284         struct irc_sockaddr_storage ip, cip;
 285         char addr[HOSTLEN+1];
 286         int bits, cbits;
 287         rb_dlink_node *ptr;
 288
 289         parse_netmask(locip, (struct sockaddr *)&cip, &cbits);
 290
 291         RB_DLINK_FOREACH(ptr, oper_conf_list.head)
 292         {
 293                 oper_p = ptr->data;
 294
 295                 /* name/username doesnt match.. */
 296                 if(irccmp(oper_p->name, name) || !match(oper_p->username, username))
 297                         continue;
 298
 299                 strlcpy(addr, oper_p->host, sizeof(addr));
 300
 301                 if(parse_netmask(addr, (struct sockaddr *)&ip, &bits) != HM_HOST)
 302                 {
 303                         if(ip.ss_family == cip.ss_family &&
 304                            comp_with_mask_sock((struct sockaddr *)&ip, (struct sockaddr *)&cip, bits))
 305                                 return oper_p;
 306                 }
 307
 308                 /* we have to compare against the host as well, because its
 309                  * valid to set a spoof to an IP, which if we only compare
 310                  * in ip form to sockhost will not necessarily match --anfl
 311                  */
 312                 if(match(oper_p->host, host))
 313                         return oper_p;
 314         }
 315
 316         return NULL;
 317 }
 318
 319 struct oper_flags
 320 {
 321         int flag;
 322         char has;
 323         char hasnt;
 324 };
 325 static struct oper_flags oper_flagtable[] =
 326 {
 327         { OPER_GLINE,           'G', 'g' },
 328         { OPER_KLINE,           'K', 'k' },
 329         { OPER_XLINE,           'X', 'x' },
 330         { OPER_RESV,            'Q', 'q' },
 331         { OPER_GLOBKILL,        'O', 'o' },
 332         { OPER_LOCKILL,         'C', 'c' },
 333         { OPER_REMOTE,          'R', 'r' },
 334         { OPER_UNKLINE,         'U', 'u' },
 335         { OPER_REHASH,          'H', 'h' },
 336         { OPER_DIE,             'D', 'd' },
 337         { OPER_ADMIN,           'A', 'a' },
 338         { OPER_NICKS,           'N', 'n' },
 339         { OPER_OPERWALL,        'L', 'l' },
 340         { OPER_SPY,             'S', 's' },
 341         { OPER_INVIS,           'P', 'p' },
 342         { OPER_REMOTEBAN,       'B', 'b' },
 343         { OPER_MASSNOTICE,      'M', 'm' },
 344         { 0,                    '\0', '\0' }
 345 };
 346
 347 const char *
 348 get_oper_privs(int flags)
 349 {
 350         static char buf[20];
 351         char *p;
 352         int i;
 353
 354         p = buf;
 355
 356         for(i = 0; oper_flagtable[i].flag; i++)
 357         {
 358                 if(flags & oper_flagtable[i].flag)
 359                         *p++ = oper_flagtable[i].has;
 360                 else
 361                         *p++ = oper_flagtable[i].hasnt;
 362         }
 363
 364         *p = '\0';
 365
 366         return buf;
 367 }
 368
 369 struct server_conf *
 370 make_server_conf(void)
 371 {
 372         struct server_conf *server_p = MyMalloc(sizeof(struct server_conf));
 373         server_p->aftype = AF_INET;
 374         return server_p;
 375 }
 376
 377 void
 378 free_server_conf(struct server_conf *server_p)
 379 {
 380         s_assert(server_p != NULL);
 381         if(server_p == NULL)
 382                 return;
 383
 384         if(!EmptyString(server_p->passwd))
 385         {
 386                 memset(server_p->passwd, 0, strlen(server_p->passwd));
 387                 rb_free(server_p->passwd);
 388         }
 389
 390         if(!EmptyString(server_p->spasswd))
 391         {
 392                 memset(server_p->spasswd, 0, strlen(server_p->spasswd));
 393                 rb_free(server_p->spasswd);
 394         }
 395
 396         rb_free(server_p->name);
 397         rb_free(server_p->host);
 398         rb_free(server_p->class_name);
 399         rb_free(server_p);
 400 }
 401
 402 void
 403 add_server_conf(struct server_conf *server_p)
 404 {
 405         if(EmptyString(server_p->class_name))
 406         {
 407                 DupString(server_p->class_name, "default");
 408                 server_p->class = default_class;
 409                 return;
 410         }
 411
 412         server_p->class = find_class(server_p->class_name);
 413
 414         if(server_p->class == default_class)
 415         {
 416                 conf_report_error("Warning connect::class invalid for %s",
 417                                 server_p->name);
 418
 419                 rb_free(server_p->class_name);
 420                 DupString(server_p->class_name, "default");
 421         }
 422
 423         if(strchr(server_p->host, '*') || strchr(server_p->host, '?'))
 424                 return;
 425 }
 426
 427 struct server_conf *
 428 find_server_conf(const char *name)
 429 {
 430         struct server_conf *server_p;
 431         rb_dlink_node *ptr;
 432
 433         RB_DLINK_FOREACH(ptr, server_conf_list.head)
 434         {
 435                 server_p = ptr->data;
 436
 437                 if(ServerConfIllegal(server_p))
 438                         continue;
 439
 440                 if(match(name, server_p->name))
 441                         return server_p;
 442         }
 443
 444         return NULL;
 445 }
 446
 447 void
 448 attach_server_conf(struct Client *client_p, struct server_conf *server_p)
 449 {
 450         /* already have an attached conf */
 451         if(client_p->localClient->att_sconf)
 452         {
 453                 /* short circuit this special case :) */
 454                 if(client_p->localClient->att_sconf == server_p)
 455                         return;
 456
 457                 detach_server_conf(client_p);
 458         }
 459
 460         CurrUsers(server_p->class)++;
 461
 462         client_p->localClient->att_sconf = server_p;
 463         server_p->servers++;
 464 }
 465
 466 void
 467 detach_server_conf(struct Client *client_p)
 468 {
 469         struct server_conf *server_p = client_p->localClient->att_sconf;
 470
 471         if(server_p == NULL)
 472                 return;
 473
 474         client_p->localClient->att_sconf = NULL;
 475         server_p->servers--;
 476         CurrUsers(server_p->class)--;
 477
 478         if(ServerConfIllegal(server_p) && !server_p->servers)
 479         {
 480                 /* the class this one is using may need destroying too */
 481                 if(MaxUsers(server_p->class) < 0 && CurrUsers(server_p->class) <= 0)
 482                         free_class(server_p->class);
 483
 484                 rb_dlinkDelete(&server_p->node, &server_conf_list);
 485                 free_server_conf(server_p);
 486         }
 487 }
 488
 489 void
 490 set_server_conf_autoconn(struct Client *source_p, char *name, int newval)
 491 {
 492         struct server_conf *server_p;
 493
 494         if((server_p = find_server_conf(name)) != NULL)
 495         {
 496                 if(newval)
 497                         server_p->flags |= SERVER_AUTOCONN;
 498                 else
 499                         server_p->flags &= ~SERVER_AUTOCONN;
 500
 501                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 502                                 "%s has changed AUTOCONN for %s to %i",
 503                                 get_oper_name(source_p), name, newval);
 504         }
 505         else
 506                 sendto_one_notice(source_p, ":Can't find %s", name);
 507 }
 508
 509 struct ConfItem *
 510 find_xline(const char *gecos, int counter)
 511 {
 512         struct ConfItem *aconf;
 513         rb_dlink_node *ptr;
 514
 515         RB_DLINK_FOREACH(ptr, xline_conf_list.head)
 516         {
 517                 aconf = ptr->data;
 518
 519                 if(match_esc(aconf->name, gecos))
 520                 {
 521                         if(counter)
 522                                 aconf->port++;
 523                         return aconf;
 524                 }
 525         }
 526
 527         return NULL;
 528 }
 529
 530 struct ConfItem *
 531 find_xline_mask(const char *gecos)
 532 {
 533         struct ConfItem *aconf;
 534         rb_dlink_node *ptr;
 535
 536         RB_DLINK_FOREACH(ptr, xline_conf_list.head)
 537         {
 538                 aconf = ptr->data;
 539
 540                 if(!irccmp(aconf->name, gecos))
 541                         return aconf;
 542         }
 543
 544         return NULL;
 545 }
 546
 547 struct ConfItem *
 548 find_nick_resv(const char *name)
 549 {
 550         struct ConfItem *aconf;
 551         rb_dlink_node *ptr;
 552
 553         RB_DLINK_FOREACH(ptr, resv_conf_list.head)
 554         {
 555                 aconf = ptr->data;
 556
 557                 if(match_esc(aconf->name, name))
 558                 {
 559                         aconf->port++;
 560                         return aconf;
 561                 }
 562         }
 563
 564         return NULL;
 565 }
 566
 567 struct ConfItem *
 568 find_nick_resv_mask(const char *name)
 569 {
 570         struct ConfItem *aconf;
 571         rb_dlink_node *ptr;
 572
 573         RB_DLINK_FOREACH(ptr, resv_conf_list.head)
 574         {
 575                 aconf = ptr->data;
 576
 577                 if(!irccmp(aconf->name, name))
 578                         return aconf;
 579         }
 580
 581         return NULL;
 582 }
 583
 584 /* clean_resv_nick()
 585  *
 586  * inputs       - nick
 587  * outputs      - 1 if nick is vaild resv, 0 otherwise
 588  * side effects -
 589  */
 590 int
 591 clean_resv_nick(const char *nick)
 592 {
 593         char tmpch;
 594         int as = 0;
 595         int q = 0;
 596         int ch = 0;
 597
 598         if(*nick == '-' || IsDigit(*nick))
 599                 return 0;
 600
 601         while ((tmpch = *nick++))
 602         {
 603                 if(tmpch == '?' || tmpch == '@' || tmpch == '#')
 604                         q++;
 605                 else if(tmpch == '*')
 606                         as++;
 607                 else if(IsNickChar(tmpch))
 608                         ch++;
 609                 else
 610                         return 0;
 611         }
 612
 613         if(!ch && as)
 614                 return 0;
 615
 616         return 1;
 617 }
 618
 619 /* valid_wild_card_simple()
 620  *
 621  * inputs       - "thing" to test
 622  * outputs      - 1 if enough wildcards, else 0
 623  * side effects -
 624  */
 625 int
 626 valid_wild_card_simple(const char *data)
 627 {
 628         const char *p;
 629         char tmpch;
 630         int nonwild = 0;
 631         int wild = 0;
 632
 633         /* check the string for minimum number of nonwildcard chars */
 634         p = data;
 635
 636         while((tmpch = *p++))
 637         {
 638                 /* found an escape, p points to the char after it, so skip
 639                  * that and move on.
 640                  */
 641                 if(tmpch == '\\' && *p)
 642                 {
 643                         p++;
 644                         if(++nonwild >= ConfigFileEntry.min_nonwildcard_simple)
 645                                 return 1;
 646                 }
 647                 else if(!IsMWildChar(tmpch))
 648                 {
 649                         /* if we have enough nonwildchars, return */
 650                         if(++nonwild >= ConfigFileEntry.min_nonwildcard_simple)
 651                                 return 1;
 652                 }
 653                 else
 654                         wild++;
 655         }
 656
 657         /* strings without wilds are also ok */
 658         return wild == 0;
 659 }
 660
 661 time_t
 662 valid_temp_time(const char *p)
 663 {
 664         time_t result = 0;
 665
 666         while(*p)
 667         {
 668                 if(IsDigit(*p))
 669                 {
 670                         result *= 10;
 671                         result += ((*p) & 0xF);
 672                         p++;
 673                 }
 674                 else
 675                         return -1;
 676         }
 677
 678         if(result > (60 * 24 * 7 * 52))
 679                 result = (60 * 24 * 7 * 52);
 680
 681         return(result * 60);
 682 }
 683
 684 static void
 685 expire_temp_rxlines(void *unused)
 686 {
 687         struct ConfItem *aconf;
 688         rb_dlink_node *ptr;
 689         rb_dlink_node *next_ptr;
 690         int i;
 691
 692         HASH_WALK_SAFE(i, R_MAX, ptr, next_ptr, resvTable)
 693         {
 694                 aconf = ptr->data;
 695
 696                 if(aconf->hold && aconf->hold <= CurrentTime)
 697                 {
 698                         if(ConfigFileEntry.tkline_expire_notices)
 699                                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 700                                                 "Temporary RESV for [%s] expired",
 701                                                 aconf->name);
 702
 703                         free_conf(aconf);
 704                         rb_dlinkDestroy(ptr, &resvTable[i]);
 705                 }
 706         }
 707         HASH_WALK_END
 708
 709         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, resv_conf_list.head)
 710         {
 711                 aconf = ptr->data;
 712
 713                 if(aconf->hold && aconf->hold <= CurrentTime)
 714                 {
 715                         if(ConfigFileEntry.tkline_expire_notices)
 716                                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 717                                                 "Temporary RESV for [%s] expired",
 718                                                 aconf->name);
 719                         free_conf(aconf);
 720                         rb_dlinkDestroy(ptr, &resv_conf_list);
 721                 }
 722         }
 723
 724         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, xline_conf_list.head)
 725         {
 726                 aconf = ptr->data;
 727
 728                 if(aconf->hold && aconf->hold <= CurrentTime)
 729                 {
 730                         if(ConfigFileEntry.tkline_expire_notices)
 731                                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 732                                                 "Temporary X-line for [%s] expired",
 733                                                 aconf->name);
 734                         free_conf(aconf);
 735                         rb_dlinkDestroy(ptr, &xline_conf_list);
 736                 }
 737         }
 738 }
 739
 740 unsigned long
 741 get_nd_count(void)
 742 {
 743         return(rb_dlink_list_length(&nd_list));
 744 }
 745
 746 void
 747 add_nd_entry(const char *name)
 748 {
 749         struct nd_entry *nd;
 750
 751         if(irc_dictionary_find(nd_dict, name) != NULL)
 752                 return;
 753
 754         nd = BlockHeapAlloc(nd_heap);
 755
 756         strlcpy(nd->name, name, sizeof(nd->name));
 757         nd->expire = CurrentTime + ConfigFileEntry.nick_delay;
 758
 759         /* this list is ordered */
 760         rb_dlinkAddTail(nd, &nd->lnode, &nd_list);
 761
 762         irc_dictionary_add(nd_dict, nd->name, nd);
 763 }
 764
 765 void
 766 free_nd_entry(struct nd_entry *nd)
 767 {
 768         irc_dictionary_delete(nd_dict, nd->name);
 769
 770         rb_dlinkDelete(&nd->lnode, &nd_list);
 771         BlockHeapFree(nd_heap, nd);
 772 }
 773
 774 void
 775 expire_nd_entries(void *unused)
 776 {
 777         struct nd_entry *nd;
 778         rb_dlink_node *ptr;
 779         rb_dlink_node *next_ptr;
 780
 781         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, nd_list.head)
 782         {
 783                 nd = ptr->data;
 784
 785                 /* this list is ordered - we can stop when we hit the first
 786                  * entry that doesnt expire..
 787                  */
 788                 if(nd->expire > CurrentTime)
 789                         return;
 790
 791                 free_nd_entry(nd);
 792         }
 793 }
 794
 795 void
 796 add_tgchange(const char *host)
 797 {
 798         tgchange *target;
 799         patricia_node_t *pnode;
 800
 801         if(find_tgchange(host))
 802                 return;
 803
 804         target = MyMalloc(sizeof(tgchange));
 805         pnode = make_and_lookup(tgchange_tree, host);
 806
 807         pnode->data = target;
 808         target->pnode = pnode;
 809
 810         DupString(target->ip, host);
 811         target->expiry = CurrentTime + (60*60*12);
 812
 813         rb_dlinkAdd(target, &target->node, &tgchange_list);
 814 }
 815
 816 tgchange *
 817 find_tgchange(const char *host)
 818 {
 819         patricia_node_t *pnode;
 820
 821         if((pnode = match_exact_string(tgchange_tree, host)))
 822                 return pnode->data;
 823
 824         return NULL;
 825 }
 826