Annotation of embedaddon/quagga/lib/distribute.c, revision 1.1

1.1     ! misho       1: /* Distribute list functions
        !             2:  * Copyright (C) 1998, 1999 Kunihiro Ishiguro
        !             3:  *
        !             4:  * This file is part of GNU Zebra.
        !             5:  *
        !             6:  * GNU Zebra is free software; you can redistribute it and/or modify
        !             7:  * it under the terms of the GNU General Public License as published
        !             8:  * by the Free Software Foundation; either version 2, or (at your
        !             9:  * option) any later version.
        !            10:  *
        !            11:  * GNU Zebra is distributed in the hope that it will be useful, but
        !            12:  * WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            14:  * General Public License for more details.
        !            15:  *
        !            16:  * You should have received a copy of the GNU General Public License
        !            17:  * along with GNU Zebra; see the file COPYING.  If not, write to the
        !            18:  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
        !            19:  * Boston, MA 02111-1307, USA.
        !            20:  */
        !            21: 
        !            22: #include <zebra.h>
        !            23: 
        !            24: #include "hash.h"
        !            25: #include "if.h"
        !            26: #include "filter.h"
        !            27: #include "command.h"
        !            28: #include "distribute.h"
        !            29: #include "memory.h"
        !            30: 
        !            31: /* Hash of distribute list. */
        !            32: struct hash *disthash;
        !            33: 
        !            34: /* Hook functions. */
        !            35: void (*distribute_add_hook) (struct distribute *);
        !            36: void (*distribute_delete_hook) (struct distribute *);
        !            37: 
        !            38: static struct distribute *
        !            39: distribute_new (void)
        !            40: {
        !            41:   return XCALLOC (MTYPE_DISTRIBUTE, sizeof (struct distribute));
        !            42: }
        !            43: 
        !            44: /* Free distribute object. */
        !            45: static void
        !            46: distribute_free (struct distribute *dist)
        !            47: {
        !            48:   if (dist->ifname)
        !            49:     XFREE (MTYPE_DISTRIBUTE_IFNAME, dist->ifname);
        !            50: 
        !            51:   if (dist->list[DISTRIBUTE_IN])
        !            52:     free (dist->list[DISTRIBUTE_IN]);
        !            53:   if (dist->list[DISTRIBUTE_OUT])
        !            54:     free (dist->list[DISTRIBUTE_OUT]);
        !            55: 
        !            56:   if (dist->prefix[DISTRIBUTE_IN])
        !            57:     free (dist->prefix[DISTRIBUTE_IN]);
        !            58:   if (dist->prefix[DISTRIBUTE_OUT])
        !            59:     free (dist->prefix[DISTRIBUTE_OUT]);
        !            60: 
        !            61:   XFREE (MTYPE_DISTRIBUTE, dist);
        !            62: }
        !            63: 
        !            64: /* Lookup interface's distribute list. */
        !            65: struct distribute *
        !            66: distribute_lookup (const char *ifname)
        !            67: {
        !            68:   struct distribute key;
        !            69:   struct distribute *dist;
        !            70: 
        !            71:   /* temporary reference */
        !            72:   key.ifname = (char *)ifname;
        !            73: 
        !            74:   dist = hash_lookup (disthash, &key);
        !            75:   
        !            76:   return dist;
        !            77: }
        !            78: 
        !            79: void
        !            80: distribute_list_add_hook (void (*func) (struct distribute *))
        !            81: {
        !            82:   distribute_add_hook = func;
        !            83: }
        !            84: 
        !            85: void
        !            86: distribute_list_delete_hook (void (*func) (struct distribute *))
        !            87: {
        !            88:   distribute_delete_hook = func;
        !            89: }
        !            90: 
        !            91: static void *
        !            92: distribute_hash_alloc (struct distribute *arg)
        !            93: {
        !            94:   struct distribute *dist;
        !            95: 
        !            96:   dist = distribute_new ();
        !            97:   if (arg->ifname)
        !            98:     dist->ifname = XSTRDUP (MTYPE_DISTRIBUTE_IFNAME, arg->ifname);
        !            99:   else
        !           100:     dist->ifname = NULL;
        !           101:   return dist;
        !           102: }
        !           103: 
        !           104: /* Make new distribute list and push into hash. */
        !           105: static struct distribute *
        !           106: distribute_get (const char *ifname)
        !           107: {
        !           108:   struct distribute key;
        !           109: 
        !           110:   /* temporary reference */
        !           111:   key.ifname = (char *)ifname;
        !           112:   
        !           113:   return hash_get (disthash, &key, (void * (*) (void *))distribute_hash_alloc);
        !           114: }
        !           115: 
        !           116: static unsigned int
        !           117: distribute_hash_make (void *arg)
        !           118: {
        !           119:   const struct distribute *dist = arg;
        !           120: 
        !           121:   return dist->ifname ? string_hash_make (dist->ifname) : 0;
        !           122: }
        !           123: 
        !           124: /* If two distribute-list have same value then return 1 else return
        !           125:    0. This function is used by hash package. */
        !           126: static int
        !           127: distribute_cmp (const struct distribute *dist1, const struct distribute *dist2)
        !           128: {
        !           129:   if (dist1->ifname && dist2->ifname)
        !           130:     if (strcmp (dist1->ifname, dist2->ifname) == 0)
        !           131:       return 1;
        !           132:   if (! dist1->ifname && ! dist2->ifname)
        !           133:     return 1;
        !           134:   return 0;
        !           135: }
        !           136: 
        !           137: /* Set access-list name to the distribute list. */
        !           138: static struct distribute *
        !           139: distribute_list_set (const char *ifname, enum distribute_type type, 
        !           140:                      const char *alist_name)
        !           141: {
        !           142:   struct distribute *dist;
        !           143: 
        !           144:   dist = distribute_get (ifname);
        !           145: 
        !           146:   if (type == DISTRIBUTE_IN)
        !           147:     {
        !           148:       if (dist->list[DISTRIBUTE_IN])
        !           149:        free (dist->list[DISTRIBUTE_IN]);
        !           150:       dist->list[DISTRIBUTE_IN] = strdup (alist_name);
        !           151:     }
        !           152:   if (type == DISTRIBUTE_OUT)
        !           153:     {
        !           154:       if (dist->list[DISTRIBUTE_OUT])
        !           155:        free (dist->list[DISTRIBUTE_OUT]);
        !           156:       dist->list[DISTRIBUTE_OUT] = strdup (alist_name);
        !           157:     }
        !           158: 
        !           159:   /* Apply this distribute-list to the interface. */
        !           160:   (*distribute_add_hook) (dist);
        !           161:   
        !           162:   return dist;
        !           163: }
        !           164: 
        !           165: /* Unset distribute-list.  If matched distribute-list exist then
        !           166:    return 1. */
        !           167: static int
        !           168: distribute_list_unset (const char *ifname, enum distribute_type type, 
        !           169:                       const char *alist_name)
        !           170: {
        !           171:   struct distribute *dist;
        !           172: 
        !           173:   dist = distribute_lookup (ifname);
        !           174:   if (!dist)
        !           175:     return 0;
        !           176: 
        !           177:   if (type == DISTRIBUTE_IN)
        !           178:     {
        !           179:       if (!dist->list[DISTRIBUTE_IN])
        !           180:        return 0;
        !           181:       if (strcmp (dist->list[DISTRIBUTE_IN], alist_name) != 0)
        !           182:        return 0;
        !           183: 
        !           184:       free (dist->list[DISTRIBUTE_IN]);
        !           185:       dist->list[DISTRIBUTE_IN] = NULL;      
        !           186:     }
        !           187: 
        !           188:   if (type == DISTRIBUTE_OUT)
        !           189:     {
        !           190:       if (!dist->list[DISTRIBUTE_OUT])
        !           191:        return 0;
        !           192:       if (strcmp (dist->list[DISTRIBUTE_OUT], alist_name) != 0)
        !           193:        return 0;
        !           194: 
        !           195:       free (dist->list[DISTRIBUTE_OUT]);
        !           196:       dist->list[DISTRIBUTE_OUT] = NULL;      
        !           197:     }
        !           198: 
        !           199:   /* Apply this distribute-list to the interface. */
        !           200:   (*distribute_delete_hook) (dist);
        !           201: 
        !           202:   /* If both out and in is NULL then free distribute list. */
        !           203:   if (dist->list[DISTRIBUTE_IN] == NULL &&
        !           204:       dist->list[DISTRIBUTE_OUT] == NULL &&
        !           205:       dist->prefix[DISTRIBUTE_IN] == NULL &&
        !           206:       dist->prefix[DISTRIBUTE_OUT] == NULL)
        !           207:     {
        !           208:       hash_release (disthash, dist);
        !           209:       distribute_free (dist);
        !           210:     }
        !           211: 
        !           212:   return 1;
        !           213: }
        !           214: 
        !           215: /* Set access-list name to the distribute list. */
        !           216: static struct distribute *
        !           217: distribute_list_prefix_set (const char *ifname, enum distribute_type type,
        !           218:                            const char *plist_name)
        !           219: {
        !           220:   struct distribute *dist;
        !           221: 
        !           222:   dist = distribute_get (ifname);
        !           223: 
        !           224:   if (type == DISTRIBUTE_IN)
        !           225:     {
        !           226:       if (dist->prefix[DISTRIBUTE_IN])
        !           227:        free (dist->prefix[DISTRIBUTE_IN]);
        !           228:       dist->prefix[DISTRIBUTE_IN] = strdup (plist_name);
        !           229:     }
        !           230:   if (type == DISTRIBUTE_OUT)
        !           231:     {
        !           232:       if (dist->prefix[DISTRIBUTE_OUT])
        !           233:        free (dist->prefix[DISTRIBUTE_OUT]);
        !           234:       dist->prefix[DISTRIBUTE_OUT] = strdup (plist_name);
        !           235:     }
        !           236: 
        !           237:   /* Apply this distribute-list to the interface. */
        !           238:   (*distribute_add_hook) (dist);
        !           239:   
        !           240:   return dist;
        !           241: }
        !           242: 
        !           243: /* Unset distribute-list.  If matched distribute-list exist then
        !           244:    return 1. */
        !           245: static int
        !           246: distribute_list_prefix_unset (const char *ifname, enum distribute_type type,
        !           247:                              const char *plist_name)
        !           248: {
        !           249:   struct distribute *dist;
        !           250: 
        !           251:   dist = distribute_lookup (ifname);
        !           252:   if (!dist)
        !           253:     return 0;
        !           254: 
        !           255:   if (type == DISTRIBUTE_IN)
        !           256:     {
        !           257:       if (!dist->prefix[DISTRIBUTE_IN])
        !           258:        return 0;
        !           259:       if (strcmp (dist->prefix[DISTRIBUTE_IN], plist_name) != 0)
        !           260:        return 0;
        !           261: 
        !           262:       free (dist->prefix[DISTRIBUTE_IN]);
        !           263:       dist->prefix[DISTRIBUTE_IN] = NULL;      
        !           264:     }
        !           265: 
        !           266:   if (type == DISTRIBUTE_OUT)
        !           267:     {
        !           268:       if (!dist->prefix[DISTRIBUTE_OUT])
        !           269:        return 0;
        !           270:       if (strcmp (dist->prefix[DISTRIBUTE_OUT], plist_name) != 0)
        !           271:        return 0;
        !           272: 
        !           273:       free (dist->prefix[DISTRIBUTE_OUT]);
        !           274:       dist->prefix[DISTRIBUTE_OUT] = NULL;      
        !           275:     }
        !           276: 
        !           277:   /* Apply this distribute-list to the interface. */
        !           278:   (*distribute_delete_hook) (dist);
        !           279: 
        !           280:   /* If both out and in is NULL then free distribute list. */
        !           281:   if (dist->list[DISTRIBUTE_IN] == NULL &&
        !           282:       dist->list[DISTRIBUTE_OUT] == NULL &&
        !           283:       dist->prefix[DISTRIBUTE_IN] == NULL &&
        !           284:       dist->prefix[DISTRIBUTE_OUT] == NULL)
        !           285:     {
        !           286:       hash_release (disthash, dist);
        !           287:       distribute_free (dist);
        !           288:     }
        !           289: 
        !           290:   return 1;
        !           291: }
        !           292: 
        !           293: DEFUN (distribute_list_all,
        !           294:        distribute_list_all_cmd,
        !           295:        "distribute-list WORD (in|out)",
        !           296:        "Filter networks in routing updates\n"
        !           297:        "Access-list name\n"
        !           298:        "Filter incoming routing updates\n"
        !           299:        "Filter outgoing routing updates\n")
        !           300: {
        !           301:   enum distribute_type type;
        !           302:   struct distribute *dist;
        !           303: 
        !           304:   /* Check of distribute list type. */
        !           305:   if (strncmp (argv[1], "i", 1) == 0)
        !           306:     type = DISTRIBUTE_IN;
        !           307:   else if (strncmp (argv[1], "o", 1) == 0)
        !           308:     type = DISTRIBUTE_OUT;
        !           309:   else
        !           310:     {
        !           311:       vty_out (vty, "distribute list direction must be [in|out]%s",
        !           312:               VTY_NEWLINE);
        !           313:       return CMD_WARNING;
        !           314:     }
        !           315: 
        !           316:   /* Get interface name corresponding distribute list. */
        !           317:   dist = distribute_list_set (NULL, type, argv[0]);
        !           318: 
        !           319:   return CMD_SUCCESS;
        !           320: }
        !           321: 
        !           322: ALIAS (distribute_list_all,
        !           323:        ipv6_distribute_list_all_cmd,
        !           324:        "distribute-list WORD (in|out)",
        !           325:        "Filter networks in routing updates\n"
        !           326:        "Access-list name\n"
        !           327:        "Filter incoming routing updates\n"
        !           328:        "Filter outgoing routing updates\n")
        !           329: 
        !           330: DEFUN (no_distribute_list_all,
        !           331:        no_distribute_list_all_cmd,
        !           332:        "no distribute-list WORD (in|out)",
        !           333:        NO_STR
        !           334:        "Filter networks in routing updates\n"
        !           335:        "Access-list name\n"
        !           336:        "Filter incoming routing updates\n"
        !           337:        "Filter outgoing routing updates\n")
        !           338: {
        !           339:   int ret;
        !           340:   enum distribute_type type;
        !           341: 
        !           342:   /* Check of distribute list type. */
        !           343:   if (strncmp (argv[1], "i", 1) == 0)
        !           344:     type = DISTRIBUTE_IN;
        !           345:   else if (strncmp (argv[1], "o", 1) == 0)
        !           346:     type = DISTRIBUTE_OUT;
        !           347:   else
        !           348:     {
        !           349:       vty_out (vty, "distribute list direction must be [in|out]%s",
        !           350:               VTY_NEWLINE);
        !           351:       return CMD_WARNING;
        !           352:     }
        !           353: 
        !           354:   ret = distribute_list_unset (NULL, type, argv[0]);
        !           355:   if (! ret)
        !           356:     {
        !           357:       vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
        !           358:       return CMD_WARNING;
        !           359:     }
        !           360:   return CMD_SUCCESS;
        !           361: }
        !           362: 
        !           363: ALIAS (no_distribute_list_all,
        !           364:        no_ipv6_distribute_list_all_cmd,
        !           365:        "no distribute-list WORD (in|out)",
        !           366:        NO_STR
        !           367:        "Filter networks in routing updates\n"
        !           368:        "Access-list name\n"
        !           369:        "Filter incoming routing updates\n"
        !           370:        "Filter outgoing routing updates\n")
        !           371: 
        !           372: DEFUN (distribute_list,
        !           373:        distribute_list_cmd,
        !           374:        "distribute-list WORD (in|out) WORD",
        !           375:        "Filter networks in routing updates\n"
        !           376:        "Access-list name\n"
        !           377:        "Filter incoming routing updates\n"
        !           378:        "Filter outgoing routing updates\n"
        !           379:        "Interface name\n")
        !           380: {
        !           381:   enum distribute_type type;
        !           382:   struct distribute *dist;
        !           383: 
        !           384:   /* Check of distribute list type. */
        !           385:   if (strncmp (argv[1], "i", 1) == 0)
        !           386:     type = DISTRIBUTE_IN;
        !           387:   else if (strncmp (argv[1], "o", 1) == 0)
        !           388:     type = DISTRIBUTE_OUT;
        !           389:   else
        !           390:     {
        !           391:       vty_out (vty, "distribute list direction must be [in|out]%s", VTY_NEWLINE);
        !           392:       return CMD_WARNING;
        !           393:     }
        !           394: 
        !           395:   /* Get interface name corresponding distribute list. */
        !           396:   dist = distribute_list_set (argv[2], type, argv[0]);
        !           397: 
        !           398:   return CMD_SUCCESS;
        !           399: }       
        !           400: 
        !           401: ALIAS (distribute_list,
        !           402:        ipv6_distribute_list_cmd,
        !           403:        "distribute-list WORD (in|out) WORD",
        !           404:        "Filter networks in routing updates\n"
        !           405:        "Access-list name\n"
        !           406:        "Filter incoming routing updates\n"
        !           407:        "Filter outgoing routing updates\n"
        !           408:        "Interface name\n")
        !           409: 
        !           410: DEFUN (no_districute_list, no_distribute_list_cmd,
        !           411:        "no distribute-list WORD (in|out) WORD",
        !           412:        NO_STR
        !           413:        "Filter networks in routing updates\n"
        !           414:        "Access-list name\n"
        !           415:        "Filter incoming routing updates\n"
        !           416:        "Filter outgoing routing updates\n"
        !           417:        "Interface name\n")
        !           418: {
        !           419:   int ret;
        !           420:   enum distribute_type type;
        !           421: 
        !           422:   /* Check of distribute list type. */
        !           423:   if (strncmp (argv[1], "i", 1) == 0)
        !           424:     type = DISTRIBUTE_IN;
        !           425:   else if (strncmp (argv[1], "o", 1) == 0)
        !           426:     type = DISTRIBUTE_OUT;
        !           427:   else
        !           428:     {
        !           429:       vty_out (vty, "distribute list direction must be [in|out]%s", VTY_NEWLINE);
        !           430:       return CMD_WARNING;
        !           431:     }
        !           432: 
        !           433:   ret = distribute_list_unset (argv[2], type, argv[0]);
        !           434:   if (! ret)
        !           435:     {
        !           436:       vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
        !           437:       return CMD_WARNING;
        !           438:     }
        !           439:   return CMD_SUCCESS;
        !           440: }       
        !           441: 
        !           442: ALIAS (no_districute_list, no_ipv6_distribute_list_cmd,
        !           443:        "no distribute-list WORD (in|out) WORD",
        !           444:        NO_STR
        !           445:        "Filter networks in routing updates\n"
        !           446:        "Access-list name\n"
        !           447:        "Filter incoming routing updates\n"
        !           448:        "Filter outgoing routing updates\n"
        !           449:        "Interface name\n")
        !           450: 
        !           451: DEFUN (districute_list_prefix_all,
        !           452:        distribute_list_prefix_all_cmd,
        !           453:        "distribute-list prefix WORD (in|out)",
        !           454:        "Filter networks in routing updates\n"
        !           455:        "Filter prefixes in routing updates\n"
        !           456:        "Name of an IP prefix-list\n"
        !           457:        "Filter incoming routing updates\n"
        !           458:        "Filter outgoing routing updates\n")
        !           459: {
        !           460:   enum distribute_type type;
        !           461:   struct distribute *dist;
        !           462: 
        !           463:   /* Check of distribute list type. */
        !           464:   if (strncmp (argv[1], "i", 1) == 0)
        !           465:     type = DISTRIBUTE_IN;
        !           466:   else if (strncmp (argv[1], "o", 1) == 0)
        !           467:     type = DISTRIBUTE_OUT;
        !           468:   else
        !           469:     {
        !           470:       vty_out (vty, "distribute list direction must be [in|out]%s", 
        !           471:               VTY_NEWLINE);
        !           472:       return CMD_WARNING;
        !           473:     }
        !           474: 
        !           475:   /* Get interface name corresponding distribute list. */
        !           476:   dist = distribute_list_prefix_set (NULL, type, argv[0]);
        !           477: 
        !           478:   return CMD_SUCCESS;
        !           479: }       
        !           480: 
        !           481: ALIAS (districute_list_prefix_all,
        !           482:        ipv6_distribute_list_prefix_all_cmd,
        !           483:        "distribute-list prefix WORD (in|out)",
        !           484:        "Filter networks in routing updates\n"
        !           485:        "Filter prefixes in routing updates\n"
        !           486:        "Name of an IP prefix-list\n"
        !           487:        "Filter incoming routing updates\n"
        !           488:        "Filter outgoing routing updates\n")
        !           489: 
        !           490: DEFUN (no_districute_list_prefix_all,
        !           491:        no_distribute_list_prefix_all_cmd,
        !           492:        "no distribute-list prefix WORD (in|out)",
        !           493:        NO_STR
        !           494:        "Filter networks in routing updates\n"
        !           495:        "Filter prefixes in routing updates\n"
        !           496:        "Name of an IP prefix-list\n"
        !           497:        "Filter incoming routing updates\n"
        !           498:        "Filter outgoing routing updates\n")
        !           499: {
        !           500:   int ret;
        !           501:   enum distribute_type type;
        !           502: 
        !           503:   /* Check of distribute list type. */
        !           504:   if (strncmp (argv[1], "i", 1) == 0)
        !           505:     type = DISTRIBUTE_IN;
        !           506:   else if (strncmp (argv[1], "o", 1) == 0)
        !           507:     type = DISTRIBUTE_OUT;
        !           508:   else
        !           509:     {
        !           510:       vty_out (vty, "distribute list direction must be [in|out]%s", 
        !           511:               VTY_NEWLINE);
        !           512:       return CMD_WARNING;
        !           513:     }
        !           514: 
        !           515:   ret = distribute_list_prefix_unset (NULL, type, argv[0]);
        !           516:   if (! ret)
        !           517:     {
        !           518:       vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
        !           519:       return CMD_WARNING;
        !           520:     }
        !           521:   return CMD_SUCCESS;
        !           522: }       
        !           523: 
        !           524: ALIAS (no_districute_list_prefix_all,
        !           525:        no_ipv6_distribute_list_prefix_all_cmd,
        !           526:        "no distribute-list prefix WORD (in|out)",
        !           527:        NO_STR
        !           528:        "Filter networks in routing updates\n"
        !           529:        "Filter prefixes in routing updates\n"
        !           530:        "Name of an IP prefix-list\n"
        !           531:        "Filter incoming routing updates\n"
        !           532:        "Filter outgoing routing updates\n")
        !           533: 
        !           534: DEFUN (districute_list_prefix, distribute_list_prefix_cmd,
        !           535:        "distribute-list prefix WORD (in|out) WORD",
        !           536:        "Filter networks in routing updates\n"
        !           537:        "Filter prefixes in routing updates\n"
        !           538:        "Name of an IP prefix-list\n"
        !           539:        "Filter incoming routing updates\n"
        !           540:        "Filter outgoing routing updates\n"
        !           541:        "Interface name\n")
        !           542: {
        !           543:   enum distribute_type type;
        !           544:   struct distribute *dist;
        !           545: 
        !           546:   /* Check of distribute list type. */
        !           547:   if (strncmp (argv[1], "i", 1) == 0)
        !           548:     type = DISTRIBUTE_IN;
        !           549:   else if (strncmp (argv[1], "o", 1) == 0)
        !           550:     type = DISTRIBUTE_OUT;
        !           551:   else
        !           552:     {
        !           553:       vty_out (vty, "distribute list direction must be [in|out]%s", 
        !           554:               VTY_NEWLINE);
        !           555:       return CMD_WARNING;
        !           556:     }
        !           557: 
        !           558:   /* Get interface name corresponding distribute list. */
        !           559:   dist = distribute_list_prefix_set (argv[2], type, argv[0]);
        !           560: 
        !           561:   return CMD_SUCCESS;
        !           562: }       
        !           563: 
        !           564: ALIAS (districute_list_prefix, ipv6_distribute_list_prefix_cmd,
        !           565:        "distribute-list prefix WORD (in|out) WORD",
        !           566:        "Filter networks in routing updates\n"
        !           567:        "Filter prefixes in routing updates\n"
        !           568:        "Name of an IP prefix-list\n"
        !           569:        "Filter incoming routing updates\n"
        !           570:        "Filter outgoing routing updates\n"
        !           571:        "Interface name\n")
        !           572: 
        !           573: DEFUN (no_districute_list_prefix, no_distribute_list_prefix_cmd,
        !           574:        "no distribute-list prefix WORD (in|out) WORD",
        !           575:        NO_STR
        !           576:        "Filter networks in routing updates\n"
        !           577:        "Filter prefixes in routing updates\n"
        !           578:        "Name of an IP prefix-list\n"
        !           579:        "Filter incoming routing updates\n"
        !           580:        "Filter outgoing routing updates\n"
        !           581:        "Interface name\n")
        !           582: {
        !           583:   int ret;
        !           584:   enum distribute_type type;
        !           585: 
        !           586:   /* Check of distribute list type. */
        !           587:   if (strncmp (argv[1], "i", 1) == 0)
        !           588:     type = DISTRIBUTE_IN;
        !           589:   else if (strncmp (argv[1], "o", 1) == 0)
        !           590:     type = DISTRIBUTE_OUT;
        !           591:   else
        !           592:     {
        !           593:       vty_out (vty, "distribute list direction must be [in|out]%s", 
        !           594:               VTY_NEWLINE);
        !           595:       return CMD_WARNING;
        !           596:     }
        !           597: 
        !           598:   ret = distribute_list_prefix_unset (argv[2], type, argv[0]);
        !           599:   if (! ret)
        !           600:     {
        !           601:       vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
        !           602:       return CMD_WARNING;
        !           603:     }
        !           604:   return CMD_SUCCESS;
        !           605: }       
        !           606: 
        !           607: ALIAS (no_districute_list_prefix, no_ipv6_distribute_list_prefix_cmd,
        !           608:        "no distribute-list prefix WORD (in|out) WORD",
        !           609:        NO_STR
        !           610:        "Filter networks in routing updates\n"
        !           611:        "Filter prefixes in routing updates\n"
        !           612:        "Name of an IP prefix-list\n"
        !           613:        "Filter incoming routing updates\n"
        !           614:        "Filter outgoing routing updates\n"
        !           615:        "Interface name\n")
        !           616: 
        !           617: int
        !           618: config_show_distribute (struct vty *vty)
        !           619: {
        !           620:   unsigned int i;
        !           621:   struct hash_backet *mp;
        !           622:   struct distribute *dist;
        !           623: 
        !           624:   /* Output filter configuration. */
        !           625:   dist = distribute_lookup (NULL);
        !           626:   if (dist && (dist->list[DISTRIBUTE_OUT] || dist->prefix[DISTRIBUTE_OUT]))
        !           627:     {
        !           628:       vty_out (vty, "  Outgoing update filter list for all interface is");
        !           629:       if (dist->list[DISTRIBUTE_OUT])
        !           630:        vty_out (vty, " %s", dist->list[DISTRIBUTE_OUT]);
        !           631:       if (dist->prefix[DISTRIBUTE_OUT])
        !           632:        vty_out (vty, "%s (prefix-list) %s",
        !           633:                 dist->list[DISTRIBUTE_OUT] ? "," : "",
        !           634:                 dist->prefix[DISTRIBUTE_OUT]);
        !           635:       vty_out (vty, "%s", VTY_NEWLINE);
        !           636:     }
        !           637:   else
        !           638:     vty_out (vty, "  Outgoing update filter list for all interface is not set%s", VTY_NEWLINE);
        !           639: 
        !           640:   for (i = 0; i < disthash->size; i++)
        !           641:     for (mp = disthash->index[i]; mp; mp = mp->next)
        !           642:       {
        !           643:        dist = mp->data;
        !           644:        if (dist->ifname)
        !           645:          if (dist->list[DISTRIBUTE_OUT] || dist->prefix[DISTRIBUTE_OUT])
        !           646:            {
        !           647:              vty_out (vty, "    %s filtered by", dist->ifname);
        !           648:              if (dist->list[DISTRIBUTE_OUT])
        !           649:                vty_out (vty, " %s", dist->list[DISTRIBUTE_OUT]);
        !           650:              if (dist->prefix[DISTRIBUTE_OUT])
        !           651:                vty_out (vty, "%s (prefix-list) %s",
        !           652:                         dist->list[DISTRIBUTE_OUT] ? "," : "",
        !           653:                         dist->prefix[DISTRIBUTE_OUT]);
        !           654:              vty_out (vty, "%s", VTY_NEWLINE);
        !           655:            }
        !           656:       }
        !           657: 
        !           658: 
        !           659:   /* Input filter configuration. */
        !           660:   dist = distribute_lookup (NULL);
        !           661:   if (dist && (dist->list[DISTRIBUTE_IN] || dist->prefix[DISTRIBUTE_IN]))
        !           662:     {
        !           663:       vty_out (vty, "  Incoming update filter list for all interface is");
        !           664:       if (dist->list[DISTRIBUTE_IN])
        !           665:        vty_out (vty, " %s", dist->list[DISTRIBUTE_IN]);
        !           666:       if (dist->prefix[DISTRIBUTE_IN])
        !           667:        vty_out (vty, "%s (prefix-list) %s",
        !           668:                 dist->list[DISTRIBUTE_IN] ? "," : "",
        !           669:                 dist->prefix[DISTRIBUTE_IN]);
        !           670:       vty_out (vty, "%s", VTY_NEWLINE);
        !           671:     }
        !           672:   else
        !           673:     vty_out (vty, "  Incoming update filter list for all interface is not set%s", VTY_NEWLINE);
        !           674: 
        !           675:   for (i = 0; i < disthash->size; i++)
        !           676:     for (mp = disthash->index[i]; mp; mp = mp->next)
        !           677:       {
        !           678:        dist = mp->data;
        !           679:        if (dist->ifname)
        !           680:          if (dist->list[DISTRIBUTE_IN] || dist->prefix[DISTRIBUTE_IN])
        !           681:            {
        !           682:              vty_out (vty, "    %s filtered by", dist->ifname);
        !           683:              if (dist->list[DISTRIBUTE_IN])
        !           684:                vty_out (vty, " %s", dist->list[DISTRIBUTE_IN]);
        !           685:              if (dist->prefix[DISTRIBUTE_IN])
        !           686:                vty_out (vty, "%s (prefix-list) %s",
        !           687:                         dist->list[DISTRIBUTE_IN] ? "," : "",
        !           688:                         dist->prefix[DISTRIBUTE_IN]);
        !           689:              vty_out (vty, "%s", VTY_NEWLINE);
        !           690:            }
        !           691:       }
        !           692:   return 0;
        !           693: }
        !           694: 
        !           695: /* Configuration write function. */
        !           696: int
        !           697: config_write_distribute (struct vty *vty)
        !           698: {
        !           699:   unsigned int i;
        !           700:   struct hash_backet *mp;
        !           701:   int write = 0;
        !           702: 
        !           703:   for (i = 0; i < disthash->size; i++)
        !           704:     for (mp = disthash->index[i]; mp; mp = mp->next)
        !           705:       {
        !           706:        struct distribute *dist;
        !           707: 
        !           708:        dist = mp->data;
        !           709: 
        !           710:        if (dist->list[DISTRIBUTE_IN])
        !           711:          {
        !           712:            vty_out (vty, " distribute-list %s in %s%s", 
        !           713:                     dist->list[DISTRIBUTE_IN],
        !           714:                     dist->ifname ? dist->ifname : "",
        !           715:                     VTY_NEWLINE);
        !           716:            write++;
        !           717:          }
        !           718: 
        !           719:        if (dist->list[DISTRIBUTE_OUT])
        !           720:          {
        !           721:            vty_out (vty, " distribute-list %s out %s%s", 
        !           722: 
        !           723:                     dist->list[DISTRIBUTE_OUT],
        !           724:                     dist->ifname ? dist->ifname : "",
        !           725:                     VTY_NEWLINE);
        !           726:            write++;
        !           727:          }
        !           728: 
        !           729:        if (dist->prefix[DISTRIBUTE_IN])
        !           730:          {
        !           731:            vty_out (vty, " distribute-list prefix %s in %s%s",
        !           732:                     dist->prefix[DISTRIBUTE_IN],
        !           733:                     dist->ifname ? dist->ifname : "",
        !           734:                     VTY_NEWLINE);
        !           735:            write++;
        !           736:          }
        !           737: 
        !           738:        if (dist->prefix[DISTRIBUTE_OUT])
        !           739:          {
        !           740:            vty_out (vty, " distribute-list prefix %s out %s%s",
        !           741:                     dist->prefix[DISTRIBUTE_OUT],
        !           742:                     dist->ifname ? dist->ifname : "",
        !           743:                     VTY_NEWLINE);
        !           744:            write++;
        !           745:          }
        !           746:       }
        !           747:   return write;
        !           748: }
        !           749: 
        !           750: /* Clear all distribute list. */
        !           751: void
        !           752: distribute_list_reset ()
        !           753: {
        !           754:   hash_clean (disthash, (void (*) (void *)) distribute_free);
        !           755: }
        !           756: 
        !           757: /* Initialize distribute list related hash. */
        !           758: void
        !           759: distribute_list_init (int node)
        !           760: {
        !           761:   disthash = hash_create (distribute_hash_make,
        !           762:                           (int (*) (const void *, const void *)) distribute_cmp);
        !           763: 
        !           764:   if(node==RIP_NODE) {
        !           765:     install_element (RIP_NODE, &distribute_list_all_cmd);
        !           766:     install_element (RIP_NODE, &no_distribute_list_all_cmd);
        !           767:     install_element (RIP_NODE, &distribute_list_cmd);
        !           768:     install_element (RIP_NODE, &no_distribute_list_cmd);
        !           769:     install_element (RIP_NODE, &distribute_list_prefix_all_cmd);
        !           770:     install_element (RIP_NODE, &no_distribute_list_prefix_all_cmd);
        !           771:     install_element (RIP_NODE, &distribute_list_prefix_cmd);
        !           772:     install_element (RIP_NODE, &no_distribute_list_prefix_cmd);
        !           773:   } else {
        !           774:     install_element (RIPNG_NODE, &ipv6_distribute_list_all_cmd);
        !           775:     install_element (RIPNG_NODE, &no_ipv6_distribute_list_all_cmd);
        !           776:     install_element (RIPNG_NODE, &ipv6_distribute_list_cmd);
        !           777:     install_element (RIPNG_NODE, &no_ipv6_distribute_list_cmd);
        !           778:     install_element (RIPNG_NODE, &ipv6_distribute_list_prefix_all_cmd);
        !           779:     install_element (RIPNG_NODE, &no_ipv6_distribute_list_prefix_all_cmd);
        !           780:     install_element (RIPNG_NODE, &ipv6_distribute_list_prefix_cmd);
        !           781:     install_element (RIPNG_NODE, &no_ipv6_distribute_list_prefix_cmd);
        !           782:   }
        !           783: }

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