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