src/hostmask.c

   1 /*
   2  *  charybdis: an advanced internet relay chat daemon (ircd).
   3  *  hostmask.c: Code to efficiently find IP & hostmask based configs.
   4  *
   5  *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
   6  *  Copyright (C) 1996-2002 Hybrid Development Team
   7  *  Copyright (C) 2002-2005 ircd-ratbox development team
   8  *  Copyright (C) 2005-2008 charybdis development team
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  23  *  USA
  24  *
  25  *  $Id: hostmask.c 2757 2006-11-10 22:58:15Z jilles $
  26  */
  27
  28 #include "stdinc.h"
  29 #include "ircd_defs.h"
  30 #include "s_conf.h"
  31 #include "hostmask.h"
  32 #include "numeric.h"
  33 #include "send.h"
  34 #include "match.h"
  35
  36 #ifdef RB_IPV6
  37 static unsigned long hash_ipv6(struct sockaddr *, int);
  38 #endif
  39 static unsigned long hash_ipv4(struct sockaddr *, int);
  40
  41
  42 /* int parse_netmask(const char *, struct rb_sockaddr_storage *, int *);
  43  * Input: A hostmask, or an IPV4/6 address.
  44  * Output: An integer describing whether it is an IPV4, IPV6 address or a
  45  *         hostmask, an address(if it is an IP mask),
  46  *         a bitlength(if it is IP mask).
  47  * Side effects: None
  48  */
  49 int
  50 parse_netmask(const char *text, struct sockaddr  *naddr, int *nb)
  51 {
  52         char *ip = LOCAL_COPY(text);
  53         char *ptr;
  54         struct rb_sockaddr_storage *addr, xaddr;
  55         int *b, xb;
  56         if(nb == NULL)
  57                 b = &xb;
  58         else
  59                 b = nb;
  60
  61         if(naddr == NULL)
  62                 addr = (struct rb_sockaddr_storage *)&xaddr;
  63         else
  64                 addr = (struct rb_sockaddr_storage *)naddr;
  65
  66 #ifdef RB_IPV6
  67         if(strchr(ip, ':'))
  68         {
  69                 if((ptr = strchr(ip, '/')))
  70                 {
  71                         *ptr = '\0';
  72                         ptr++;
  73                         *b = atoi(ptr);
  74                         if(*b > 128)
  75                                 *b = 128;
  76                 } else
  77                         *b = 128;
  78                 if(rb_inet_pton_sock(ip, (struct sockaddr *)addr) > 0)
  79                         return HM_IPV6;
  80                 else
  81                         return HM_HOST;
  82         } else
  83 #endif
  84         if(strchr(text, '.'))
  85         {
  86                 if((ptr = strchr(ip, '/')))
  87                 {
  88                         *ptr = '\0';
  89                         ptr++;
  90                         *b = atoi(ptr);
  91                         if(*b > 32)
  92                                 *b = 32;
  93                 } else
  94                         *b = 32;
  95                 if(rb_inet_pton_sock(ip, (struct sockaddr *)addr) > 0)
  96                         return HM_IPV4;
  97                 else
  98                         return HM_HOST;
  99         }
 100         return HM_HOST;
 101 }
 102
 103 /* Hashtable stuff...now external as its used in m_stats.c */
 104 struct AddressRec *atable[ATABLE_SIZE];
 105
 106 void
 107 init_host_hash(void)
 108 {
 109         memset(&atable, 0, sizeof(atable));
 110 }
 111
 112 /* unsigned long hash_ipv4(struct rb_sockaddr_storage*)
 113  * Input: An IP address.
 114  * Output: A hash value of the IP address.
 115  * Side effects: None
 116  */
 117 static unsigned long
 118 hash_ipv4(struct sockaddr *saddr, int bits)
 119 {
 120         struct sockaddr_in *addr = (struct sockaddr_in *) saddr;
 121
 122         if(bits != 0)
 123         {
 124                 unsigned long av = ntohl(addr->sin_addr.s_addr) & ~((1 << (32 - bits)) - 1);
 125                 return (av ^ (av >> 12) ^ (av >> 24)) & (ATABLE_SIZE - 1);
 126         }
 127
 128         return 0;
 129 }
 130
 131 /* unsigned long hash_ipv6(struct rb_sockaddr_storage*)
 132  * Input: An IP address.
 133  * Output: A hash value of the IP address.
 134  * Side effects: None
 135  */
 136 #ifdef RB_IPV6
 137 static unsigned long
 138 hash_ipv6(struct sockaddr *saddr, int bits)
 139 {
 140         struct sockaddr_in6 *addr = (struct sockaddr_in6 *) saddr;
 141         unsigned long v = 0, n;
 142         for (n = 0; n < 16; n++)
 143         {
 144                 if(bits >= 8)
 145                 {
 146                         v ^= addr->sin6_addr.s6_addr[n];
 147                         bits -= 8;
 148                 }
 149                 else if(bits)
 150                 {
 151                         v ^= addr->sin6_addr.s6_addr[n] & ~((1 << (8 - bits)) - 1);
 152                         return v & (ATABLE_SIZE - 1);
 153                 }
 154                 else
 155                         return v & (ATABLE_SIZE - 1);
 156         }
 157         return v & (ATABLE_SIZE - 1);
 158 }
 159 #endif
 160
 161 /* int hash_text(const char *start)
 162  * Input: The start of the text to hash.
 163  * Output: The hash of the string between 1 and (TH_MAX-1)
 164  * Side-effects: None.
 165  */
 166 static int
 167 hash_text(const char *start)
 168 {
 169         const char *p = start;
 170         unsigned long h = 0;
 171
 172         while(*p)
 173         {
 174                 h = (h << 4) - (h + (unsigned char) ToLower(*p++));
 175         }
 176
 177         return (h & (ATABLE_SIZE - 1));
 178 }
 179
 180 /* unsigned long get_hash_mask(const char *)
 181  * Input: The text to hash.
 182  * Output: The hash of the string right of the first '.' past the last
 183  *         wildcard in the string.
 184  * Side-effects: None.
 185  */
 186 static unsigned long
 187 get_mask_hash(const char *text)
 188 {
 189         const char *hp = "", *p;
 190
 191         for (p = text + strlen(text) - 1; p >= text; p--)
 192                 if(*p == '*' || *p == '?')
 193                         return hash_text(hp);
 194                 else if(*p == '.')
 195                         hp = p + 1;
 196         return hash_text(text);
 197 }
 198
 199 /* struct ConfItem* find_conf_by_address(const char*, struct rb_sockaddr_storage*,
 200  *         int type, int fam, const char *username)
 201  * Input: The hostname, the address, the type of mask to find, the address
 202  *        family, the username.
 203  * Output: The matching value with the highest precedence.
 204  * Side-effects: None
 205  * Note: Setting bit 0 of the type means that the username is ignored.
 206  */
 207 struct ConfItem *
 208 find_conf_by_address(const char *name, const char *sockhost,
 209                         const char *orighost,
 210                         struct sockaddr *addr, int type, int fam,
 211                         const char *username, const char *auth_user)
 212 {
 213         unsigned long hprecv = 0;
 214         struct ConfItem *hprec = NULL;
 215         struct AddressRec *arec;
 216         int b;
 217
 218         if(username == NULL)
 219                 username = "";
 220
 221         if(addr)
 222         {
 223                 /* Check for IPV6 matches... */
 224 #ifdef RB_IPV6
 225                 if(fam == AF_INET6)
 226                 {
 227
 228                         for (b = 128; b >= 0; b -= 16)
 229                         {
 230                                 for (arec = atable[hash_ipv6(addr, b)]; arec; arec = arec->next)
 231                                         if(arec->type == (type & ~0x1) &&
 232                                            arec->masktype == HM_IPV6 &&
 233                                            comp_with_mask_sock(addr, (struct sockaddr *)&arec->Mask.ipa.addr,
 234                                                 arec->Mask.ipa.bits) &&
 235                                                 (type & 0x1 || match(arec-> username, username)) &&
 236                                                 (type != CONF_CLIENT || !arec->auth_user ||
 237                                                 (auth_user && match(arec->auth_user, auth_user))) &&
 238                                                 arec->precedence > hprecv)
 239                                         {
 240                                                 hprecv = arec->precedence;
 241                                                 hprec = arec->aconf;
 242                                         }
 243                         }
 244                 }
 245                 else
 246 #endif
 247                 if(fam == AF_INET)
 248                 {
 249                         for (b = 32; b >= 0; b -= 8)
 250                         {
 251                                 for (arec = atable[hash_ipv4(addr, b)]; arec; arec = arec->next)
 252                                         if(arec->type == (type & ~0x1) &&
 253                                            arec->masktype == HM_IPV4 &&
 254                                            comp_with_mask_sock(addr, (struct sockaddr *)&arec->Mask.ipa.addr,
 255                                                                arec->Mask.ipa.bits) &&
 256                                                 (type & 0x1 || match(arec->username, username)) &&
 257                                                 (type != CONF_CLIENT || !arec->auth_user ||
 258                                                 (auth_user && match(arec->auth_user, auth_user))) &&
 259                                                 arec->precedence > hprecv)
 260                                         {
 261                                                 hprecv = arec->precedence;
 262                                                 hprec = arec->aconf;
 263                                         }
 264                         }
 265                 }
 266         }
 267
 268         if(orighost != NULL)
 269         {
 270                 const char *p;
 271
 272                 for (p = orighost; p != NULL;)
 273                 {
 274                         for (arec = atable[hash_text(p)]; arec; arec = arec->next)
 275
 276                                 if((arec->type == (type & ~0x1)) &&
 277                                    (arec->masktype == HM_HOST) &&
 278                                    arec->precedence > hprecv &&
 279                                    match(arec->Mask.hostname, orighost) &&
 280                                    (type != CONF_CLIENT || !arec->auth_user ||
 281                                    (auth_user && match(arec->auth_user, auth_user))) &&
 282                                    (type & 0x1 || match(arec->username, username)))
 283                                 {
 284                                         hprecv = arec->precedence;
 285                                         hprec = arec->aconf;
 286                                 }
 287                         p = strchr(p, '.');
 288                         if(p != NULL)
 289                                 p++;
 290                         else
 291                                 break;
 292                 }
 293                 for (arec = atable[0]; arec; arec = arec->next)
 294                 {
 295                         if(arec->type == (type & ~0x1) &&
 296                            arec->masktype == HM_HOST &&
 297                            arec->precedence > hprecv &&
 298                            (match(arec->Mask.hostname, orighost) ||
 299                             (sockhost && match(arec->Mask.hostname, sockhost))) &&
 300                             (type != CONF_CLIENT || !arec->auth_user ||
 301                             (auth_user && match(arec->auth_user, auth_user))) &&
 302                            (type & 0x1 || match(arec->username, username)))
 303                         {
 304                                 hprecv = arec->precedence;
 305                                 hprec = arec->aconf;
 306                         }
 307                 }
 308         }
 309
 310         if(name != NULL)
 311         {
 312                 const char *p;
 313                 /* And yes - we have to check p after strchr and p after increment for
 314                  * NULL -kre */
 315                 for (p = name; p != NULL;)
 316                 {
 317                         for (arec = atable[hash_text(p)]; arec; arec = arec->next)
 318                                 if((arec->type == (type & ~0x1)) &&
 319                                    (arec->masktype == HM_HOST) &&
 320                                    arec->precedence > hprecv &&
 321                                    match(arec->Mask.hostname, name) &&
 322                                    (type != CONF_CLIENT || !arec->auth_user ||
 323                                    (auth_user && match(arec->auth_user, auth_user))) &&
 324                                    (type & 0x1 || match(arec->username, username)))
 325                                 {
 326                                         hprecv = arec->precedence;
 327                                         hprec = arec->aconf;
 328                                 }
 329                         p = strchr(p, '.');
 330                         if(p != NULL)
 331                                 p++;
 332                         else
 333                                 break;
 334                 }
 335                 for (arec = atable[0]; arec; arec = arec->next)
 336                 {
 337                         if(arec->type == (type & ~0x1) &&
 338                            arec->masktype == HM_HOST &&
 339                            arec->precedence > hprecv &&
 340                            (match(arec->Mask.hostname, name) ||
 341                             (sockhost && match(arec->Mask.hostname, sockhost))) &&
 342                             (type != CONF_CLIENT || !arec->auth_user ||
 343                             (auth_user && match(arec->auth_user, auth_user))) &&
 344                            (type & 0x1 || match(arec->username, username)))
 345                         {
 346                                 hprecv = arec->precedence;
 347                                 hprec = arec->aconf;
 348                         }
 349                 }
 350         }
 351         return hprec;
 352 }
 353
 354 /* struct ConfItem* find_address_conf(const char*, const char*,
 355  *                                     struct rb_sockaddr_storage*, int);
 356  * Input: The hostname, username, address, address family.
 357  * Output: The applicable ConfItem.
 358  * Side-effects: None
 359  */
 360 struct ConfItem *
 361 find_address_conf(const char *host, const char *sockhost, const char *user,
 362                 const char *notildeuser, struct sockaddr *ip, int aftype, char *auth_user)
 363 {
 364         struct ConfItem *iconf, *kconf;
 365         const char *vuser;
 366
 367         /* Find the best I-line... If none, return NULL -A1kmm */
 368         if(!(iconf = find_conf_by_address(host, sockhost, NULL, ip, CONF_CLIENT, aftype, user, auth_user)))
 369                 return NULL;
 370         /* Find what their visible username will be.
 371          * Note that the username without tilde may contain one char more.
 372          * -- jilles */
 373         vuser = IsNoTilde(iconf) ? notildeuser : user;
 374
 375         /* If they are exempt from K-lines, return the best I-line. -A1kmm */
 376         if(IsConfExemptKline(iconf))
 377                 return iconf;
 378
 379         /* Find the best K-line... -A1kmm */
 380         kconf = find_conf_by_address(host, sockhost, NULL, ip, CONF_KILL, aftype, user, NULL);
 381
 382         /* If they are K-lined, return the K-line */
 383         if(kconf)
 384                 return kconf;
 385
 386         /* if theres a spoof, check it against klines.. */
 387         if(IsConfDoSpoofIp(iconf))
 388         {
 389                 char *p = strchr(iconf->name, '@');
 390
 391                 /* note, we dont need to pass sockhost here, as its
 392                  * guaranteed to not match by whats above.. --anfl
 393                  */
 394                 if(p)
 395                 {
 396                         *p = '\0';
 397                         kconf = find_conf_by_address(p+1, NULL, NULL, ip, CONF_KILL, aftype, iconf->name, NULL);
 398                         *p = '@';
 399                 }
 400                 else
 401                         kconf = find_conf_by_address(iconf->name, NULL, NULL, ip, CONF_KILL, aftype, vuser, NULL);
 402
 403                 if(kconf)
 404                         return kconf;
 405         }
 406
 407         /* if no_tilde, check the username without tilde against klines too
 408          * -- jilles */
 409         if(user != vuser)
 410         {
 411                 kconf = find_conf_by_address(host, sockhost, NULL, ip, CONF_KILL, aftype, vuser, NULL);
 412                 if(kconf)
 413                         return kconf;
 414         }
 415
 416         return iconf;
 417 }
 418
 419 /* struct ConfItem* find_dline(struct rb_sockaddr_storage*, int)
 420  * Input: An address, an address family.
 421  * Output: The best matching D-line or exempt line.
 422  * Side effects: None.
 423  */
 424 struct ConfItem *
 425 find_dline(struct sockaddr *addr, int aftype)
 426 {
 427         struct ConfItem *eline;
 428         eline = find_conf_by_address(NULL, NULL, NULL, addr, CONF_EXEMPTDLINE | 1, aftype, NULL, NULL);
 429         if(eline)
 430                 return eline;
 431         return find_conf_by_address(NULL, NULL, NULL, addr, CONF_DLINE | 1, aftype, NULL, NULL);
 432 }
 433
 434 /* void find_exact_conf_by_address(const char*, int, const char *)
 435  * Input:
 436  * Output: ConfItem if found
 437  * Side-effects: None
 438  */
 439 struct ConfItem *
 440 find_exact_conf_by_address(const char *address, int type, const char *username)
 441 {
 442         int masktype, bits;
 443         unsigned long hv;
 444         struct AddressRec *arec;
 445         struct rb_sockaddr_storage addr;
 446
 447         if(address == NULL)
 448                 address = "/NOMATCH!/";
 449         arec = rb_malloc(sizeof(struct AddressRec));
 450         masktype = parse_netmask(address, (struct sockaddr *)&addr, &bits);
 451 #ifdef RB_IPV6
 452         if(masktype == HM_IPV6)
 453         {
 454                 /* We have to do this, since we do not re-hash for every bit -A1kmm. */
 455                 hv = hash_ipv6((struct sockaddr *)&addr, bits - bits % 16);
 456         }
 457         else
 458 #endif
 459         if(masktype == HM_IPV4)
 460         {
 461                 /* We have to do this, since we do not re-hash for every bit -A1kmm. */
 462                 hv = hash_ipv4((struct sockaddr *)&addr, bits - bits % 8);
 463         }
 464         else
 465         {
 466                 hv = get_mask_hash(address);
 467         }
 468         for (arec = atable[hv]; arec; arec = arec->next)
 469         {
 470                 if (arec->type == type &&
 471                                 arec->masktype == masktype &&
 472                                 (arec->username == NULL || username == NULL ? arec->username == username : !irccmp(arec->username, username)))
 473                 {
 474                         if (masktype == HM_HOST)
 475                         {
 476                                 if (!irccmp(arec->Mask.hostname, address))
 477                                         return arec->aconf;
 478                         }
 479                         else
 480                         {
 481                                 if (arec->Mask.ipa.bits == bits &&
 482                                         comp_with_mask_sock((struct sockaddr *)&arec->Mask.ipa.addr, (struct sockaddr *)&addr, bits))
 483                                         return arec->aconf;
 484                         }
 485                 }
 486         }
 487         return NULL;
 488 }
 489
 490 /* void add_conf_by_address(const char*, int, const char *,
 491  *         struct ConfItem *aconf)
 492  * Input:
 493  * Output: None
 494  * Side-effects: Adds this entry to the hash table.
 495  */
 496 void
 497 add_conf_by_address(const char *address, int type, const char *username, const char *auth_user, struct ConfItem *aconf)
 498 {
 499         static unsigned long prec_value = 0xFFFFFFFF;
 500         int masktype, bits;
 501         unsigned long hv;
 502         struct AddressRec *arec;
 503
 504         if(address == NULL)
 505                 address = "/NOMATCH!/";
 506         arec = rb_malloc(sizeof(struct AddressRec));
 507         masktype = parse_netmask(address, (struct sockaddr *)&arec->Mask.ipa.addr, &bits);
 508         arec->Mask.ipa.bits = bits;
 509         arec->masktype = masktype;
 510 #ifdef RB_IPV6
 511         if(masktype == HM_IPV6)
 512         {
 513                 /* We have to do this, since we do not re-hash for every bit -A1kmm. */
 514                 bits -= bits % 16;
 515                 arec->next = atable[(hv = hash_ipv6((struct sockaddr *)&arec->Mask.ipa.addr, bits))];
 516                 atable[hv] = arec;
 517         }
 518         else
 519 #endif
 520         if(masktype == HM_IPV4)
 521         {
 522                 /* We have to do this, since we do not re-hash for every bit -A1kmm. */
 523                 bits -= bits % 8;
 524                 arec->next = atable[(hv = hash_ipv4((struct sockaddr *)&arec->Mask.ipa.addr, bits))];
 525                 atable[hv] = arec;
 526         }
 527         else
 528         {
 529                 arec->Mask.hostname = address;
 530                 arec->next = atable[(hv = get_mask_hash(address))];
 531                 atable[hv] = arec;
 532         }
 533         arec->username = username;
 534         arec->auth_user = auth_user;
 535         arec->aconf = aconf;
 536         arec->precedence = prec_value--;
 537         arec->type = type;
 538 }
 539
 540 /* void delete_one_address(const char*, struct ConfItem*)
 541  * Input: An address string, the associated ConfItem.
 542  * Output: None
 543  * Side effects: Deletes an address record. Frees the ConfItem if there
 544  *               is nothing referencing it, sets it as illegal otherwise.
 545  */
 546 void
 547 delete_one_address_conf(const char *address, struct ConfItem *aconf)
 548 {
 549         int masktype, bits;
 550         unsigned long hv;
 551         struct AddressRec *arec, *arecl = NULL;
 552         struct rb_sockaddr_storage addr;
 553         masktype = parse_netmask(address, (struct sockaddr *)&addr, &bits);
 554 #ifdef RB_IPV6
 555         if(masktype == HM_IPV6)
 556         {
 557                 /* We have to do this, since we do not re-hash for every bit -A1kmm. */
 558                 bits -= bits % 16;
 559                 hv = hash_ipv6((struct sockaddr *)&addr, bits);
 560         }
 561         else
 562 #endif
 563         if(masktype == HM_IPV4)
 564         {
 565                 /* We have to do this, since we do not re-hash for every bit -A1kmm. */
 566                 bits -= bits % 8;
 567                 hv = hash_ipv4((struct sockaddr *)&addr, bits);
 568         }
 569         else
 570                 hv = get_mask_hash(address);
 571         for (arec = atable[hv]; arec; arec = arec->next)
 572         {
 573                 if(arec->aconf == aconf)
 574                 {
 575                         if(arecl)
 576                                 arecl->next = arec->next;
 577                         else
 578                                 atable[hv] = arec->next;
 579                         aconf->status |= CONF_ILLEGAL;
 580                         if(!aconf->clients)
 581                                 free_conf(aconf);
 582                         rb_free(arec);
 583                         return;
 584                 }
 585                 arecl = arec;
 586         }
 587 }
 588
 589 /* void clear_out_address_conf(void)
 590  * Input: None
 591  * Output: None
 592  * Side effects: Clears out all address records in the hash table,
 593  *               frees them, and frees the ConfItems if nothing references
 594  *               them, otherwise sets them as illegal.
 595  */
 596 void
 597 clear_out_address_conf(void)
 598 {
 599         int i;
 600         struct AddressRec **store_next;
 601         struct AddressRec *arec, *arecn;
 602
 603         for (i = 0; i < ATABLE_SIZE; i++)
 604         {
 605                 store_next = &atable[i];
 606                 for (arec = atable[i]; arec; arec = arecn)
 607                 {
 608                         arecn = arec->next;
 609                         /* We keep the temporary K-lines and destroy the
 610                          * permanent ones, just to be confusing :) -A1kmm */
 611                         if(arec->aconf->flags & CONF_FLAGS_TEMPORARY ||
 612                            (arec->type != CONF_CLIENT && arec->type != CONF_EXEMPTDLINE))
 613                         {
 614                                 *store_next = arec;
 615                                 store_next = &arec->next;
 616                         }
 617                         else
 618                         {
 619                                 arec->aconf->status |= CONF_ILLEGAL;
 620                                 if(!arec->aconf->clients)
 621                                         free_conf(arec->aconf);
 622                                 rb_free(arec);
 623                         }
 624                 }
 625                 *store_next = NULL;
 626         }
 627 }
 628
 629 void
 630 clear_out_address_conf_bans(void)
 631 {
 632         int i;
 633         struct AddressRec **store_next;
 634         struct AddressRec *arec, *arecn;
 635
 636         for (i = 0; i < ATABLE_SIZE; i++)
 637         {
 638                 store_next = &atable[i];
 639                 for (arec = atable[i]; arec; arec = arecn)
 640                 {
 641                         arecn = arec->next;
 642                         /* We keep the temporary K-lines and destroy the
 643                          * permanent ones, just to be confusing :) -A1kmm */
 644                         if(arec->aconf->flags & CONF_FLAGS_TEMPORARY ||
 645                            (arec->type == CONF_CLIENT || arec->type == CONF_EXEMPTDLINE))
 646                         {
 647                                 *store_next = arec;
 648                                 store_next = &arec->next;
 649                         }
 650                         else
 651                         {
 652                                 arec->aconf->status |= CONF_ILLEGAL;
 653                                 if(!arec->aconf->clients)
 654                                         free_conf(arec->aconf);
 655                                 rb_free(arec);
 656                         }
 657                 }
 658                 *store_next = NULL;
 659         }
 660 }
 661
 662
 663 /*
 664  * show_iline_prefix()
 665  *
 666  * inputs       - pointer to struct Client requesting output
 667  *              - pointer to struct ConfItem
 668  *              - name to which iline prefix will be prefixed to
 669  * output       - pointer to static string with prefixes listed in ascii form
 670  * side effects - NONE
 671  */
 672 char *
 673 show_iline_prefix(struct Client *sptr, struct ConfItem *aconf, char *name)
 674 {
 675         static char prefix_of_host[USERLEN + 15];
 676         char *prefix_ptr;
 677
 678         prefix_ptr = prefix_of_host;
 679         if(IsNoTilde(aconf))
 680                 *prefix_ptr++ = '-';
 681         if(IsNeedIdentd(aconf))
 682                 *prefix_ptr++ = '+';
 683         if(IsConfDoSpoofIp(aconf))
 684                 *prefix_ptr++ = '=';
 685         if(IsOper(sptr) && IsConfExemptFlood(aconf))
 686                 *prefix_ptr++ = '|';
 687         if(IsOper(sptr) && IsConfExemptDNSBL(aconf) && !IsConfExemptKline(aconf))
 688                 *prefix_ptr++ = '$';
 689         if(IsOper(sptr) && IsConfExemptKline(aconf))
 690                 *prefix_ptr++ = '^';
 691         if(IsOper(sptr) && IsConfExemptLimits(aconf))
 692                 *prefix_ptr++ = '>';
 693         *prefix_ptr = '\0';
 694         strncpy(prefix_ptr, name, USERLEN);
 695         return (prefix_of_host);
 696 }
 697
 698 /* report_auth()
 699  *
 700  * Inputs: pointer to client to report to
 701  * Output: None
 702  * Side effects: Reports configured auth{} blocks to client_p
 703  */
 704 void
 705 report_auth(struct Client *client_p)
 706 {
 707         char *name, *host, *pass = "*", *user, *classname;
 708         struct AddressRec *arec;
 709         struct ConfItem *aconf;
 710         int i, port;
 711
 712         for (i = 0; i < ATABLE_SIZE; i++)
 713                 for (arec = atable[i]; arec; arec = arec->next)
 714                         if(arec->type == CONF_CLIENT)
 715                         {
 716                                 aconf = arec->aconf;
 717
 718                                 if(!IsOper(client_p) && IsConfDoSpoofIp(aconf))
 719                                         continue;
 720
 721                                 get_printable_conf(aconf, &name, &host, &pass, &user, &port,
 722                                                    &classname);
 723
 724                                 if(!EmptyString(aconf->spasswd))
 725                                         pass = aconf->spasswd;
 726
 727                                 sendto_one_numeric(client_p, RPL_STATSILINE,
 728                                                    form_str(RPL_STATSILINE),
 729                                                    name, pass, show_iline_prefix(client_p, aconf, user),
 730                                                    show_ip_conf(aconf, client_p) ? host : "255.255.255.255",
 731                                                    port, classname);
 732                         }
 733 }
 734
 735 /* report_Klines()
 736  *
 737  * inputs       - Client to report to, mask
 738  * outputs      -
 739  * side effects - Reports configured K-lines to client_p.
 740  */
 741 void
 742 report_Klines(struct Client *source_p)
 743 {
 744         char *host, *pass, *user, *oper_reason;
 745         struct AddressRec *arec;
 746         struct ConfItem *aconf = NULL;
 747         int i;
 748
 749         for (i = 0; i < ATABLE_SIZE; i++)
 750         {
 751                 for (arec = atable[i]; arec; arec = arec->next)
 752                 {
 753                         if(arec->type == CONF_KILL)
 754                         {
 755                                 aconf = arec->aconf;
 756
 757                                 /* its a tempkline, theyre reported elsewhere */
 758                                 if(aconf->flags & CONF_FLAGS_TEMPORARY)
 759                                         continue;
 760
 761                                 get_printable_kline(source_p, aconf, &host, &pass, &user, &oper_reason);
 762                                 sendto_one_numeric(source_p, RPL_STATSKLINE,
 763                                                    form_str(RPL_STATSKLINE),
 764                                                    'K', host, user, pass,
 765                                                    oper_reason ? "|" : "",
 766                                                    oper_reason ? oper_reason : "");
 767                         }
 768                 }
 769         }
 770 }