forked from Mirror/frr
8cc4198f9f
* (general) extern and static'ification of functions in code and header. Cleanup any definitions with unspecified arguments. Add casts for callback assignments where the callback is defined, typically, as passing void *, but the function being assigned has some other pointer type defined as its argument, as gcc complains about casts from void * to X* via function arguments. Fix some old K&R style function argument definitions. Add noreturn gcc attribute to some functions, as appropriate. Add unused gcc attribute to some functions (eg ones meant to help while debugging) Add guard defines to headers which were missing them. * command.c: (install_node) add const qualifier, still doesnt shut up the warning though, because of the double pointer. (cmp_node) ditto * keychain.c: (key_str2time) Add GET_LONG_RANGE() macro, derived fromn vty.h ones to fix some of the (long) < 0 warnings. * thread.c: (various) use thread_empty (cpu_record_hash_key) should cast to uintptr_t, a stdint.h type * vty.h: Add VTY_GET_IPV4_ADDRESS and VTY_GET_IPV4_PREFIX so they removed from ospfd/ospf_vty.h * zebra.h: Move definition of ZEBRA_PORT to here, to remove dependence of lib on zebra/zserv.h
1324 lines
33 KiB
C
1324 lines
33 KiB
C
/* Route map function.
|
||
Copyright (C) 1998, 1999 Kunihiro Ishiguro
|
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||
This file is part of GNU Zebra.
|
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|
||
GNU Zebra is free software; you can redistribute it and/or modify it
|
||
under the terms of the GNU General Public License as published by the
|
||
Free Software Foundation; either version 2, or (at your option) any
|
||
later version.
|
||
|
||
GNU Zebra is distributed in the hope that it will be useful, but
|
||
WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GNU Zebra; see the file COPYING. If not, write to the Free
|
||
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
|
||
|
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#include <zebra.h>
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|
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#include "linklist.h"
|
||
#include "memory.h"
|
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#include "vector.h"
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#include "prefix.h"
|
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#include "routemap.h"
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#include "command.h"
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#include "log.h"
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/* Vector for route match rules. */
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static vector route_match_vec;
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/* Vector for route set rules. */
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static vector route_set_vec;
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/* Route map rule. This rule has both `match' rule and `set' rule. */
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struct route_map_rule
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{
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/* Rule type. */
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struct route_map_rule_cmd *cmd;
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/* For pretty printing. */
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char *rule_str;
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/* Pre-compiled match rule. */
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void *value;
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/* Linked list. */
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struct route_map_rule *next;
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struct route_map_rule *prev;
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};
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/* Making route map list. */
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struct route_map_list
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{
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struct route_map *head;
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struct route_map *tail;
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void (*add_hook) (const char *);
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void (*delete_hook) (const char *);
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void (*event_hook) (route_map_event_t, const char *);
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};
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/* Master list of route map. */
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static struct route_map_list route_map_master = { NULL, NULL, NULL, NULL };
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static void
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route_map_rule_delete (struct route_map_rule_list *,
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struct route_map_rule *);
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static void
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route_map_index_delete (struct route_map_index *, int);
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/* New route map allocation. Please note route map's name must be
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specified. */
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static struct route_map *
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route_map_new (const char *name)
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{
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struct route_map *new;
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new = XCALLOC (MTYPE_ROUTE_MAP, sizeof (struct route_map));
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new->name = XSTRDUP (MTYPE_ROUTE_MAP_NAME, name);
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return new;
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}
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/* Add new name to route_map. */
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static struct route_map *
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route_map_add (const char *name)
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{
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struct route_map *map;
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struct route_map_list *list;
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map = route_map_new (name);
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list = &route_map_master;
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map->next = NULL;
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map->prev = list->tail;
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if (list->tail)
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list->tail->next = map;
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else
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list->head = map;
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list->tail = map;
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/* Execute hook. */
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if (route_map_master.add_hook)
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(*route_map_master.add_hook) (name);
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return map;
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}
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/* Route map delete from list. */
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static void
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route_map_delete (struct route_map *map)
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{
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struct route_map_list *list;
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struct route_map_index *index;
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char *name;
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while ((index = map->head) != NULL)
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route_map_index_delete (index, 0);
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name = map->name;
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list = &route_map_master;
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if (map->next)
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map->next->prev = map->prev;
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else
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list->tail = map->prev;
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if (map->prev)
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map->prev->next = map->next;
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else
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list->head = map->next;
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XFREE (MTYPE_ROUTE_MAP, map);
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/* Execute deletion hook. */
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if (route_map_master.delete_hook)
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(*route_map_master.delete_hook) (name);
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if (name)
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XFREE (MTYPE_ROUTE_MAP_NAME, name);
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}
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/* Lookup route map by route map name string. */
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struct route_map *
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route_map_lookup_by_name (const char *name)
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{
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struct route_map *map;
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for (map = route_map_master.head; map; map = map->next)
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if (strcmp (map->name, name) == 0)
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return map;
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return NULL;
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}
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/* Lookup route map. If there isn't route map create one and return
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it. */
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static struct route_map *
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route_map_get (const char *name)
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{
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struct route_map *map;
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map = route_map_lookup_by_name (name);
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if (map == NULL)
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map = route_map_add (name);
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return map;
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}
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/* Return route map's type string. */
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static const char *
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route_map_type_str (enum route_map_type type)
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{
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switch (type)
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{
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case RMAP_PERMIT:
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return "permit";
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break;
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case RMAP_DENY:
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return "deny";
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break;
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default:
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return "";
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break;
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}
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}
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static int
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route_map_empty (struct route_map *map)
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{
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if (map->head == NULL && map->tail == NULL)
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return 1;
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else
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return 0;
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}
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/* show route-map */
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static void
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vty_show_route_map_entry (struct vty *vty, struct route_map *map)
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{
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struct route_map_index *index;
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struct route_map_rule *rule;
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for (index = map->head; index; index = index->next)
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{
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vty_out (vty, "route-map %s, %s, sequence %d%s",
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map->name, route_map_type_str (index->type),
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index->pref, VTY_NEWLINE);
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/* Description */
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if (index->description)
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vty_out (vty, " Description:%s %s%s", VTY_NEWLINE,
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index->description, VTY_NEWLINE);
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/* Match clauses */
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vty_out (vty, " Match clauses:%s", VTY_NEWLINE);
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for (rule = index->match_list.head; rule; rule = rule->next)
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vty_out (vty, " %s %s%s",
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rule->cmd->str, rule->rule_str, VTY_NEWLINE);
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vty_out (vty, " Set clauses:%s", VTY_NEWLINE);
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for (rule = index->set_list.head; rule; rule = rule->next)
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vty_out (vty, " %s %s%s",
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rule->cmd->str, rule->rule_str, VTY_NEWLINE);
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vty_out (vty, " Action:%s", VTY_NEWLINE);
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if (index->nextrm)
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vty_out (vty, " Call %s%s", index->nextrm, VTY_NEWLINE);
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else if (index->exitpolicy == RMAP_GOTO)
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vty_out (vty, " Goto %d%s", index->nextpref, VTY_NEWLINE);
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else if (index->exitpolicy == RMAP_NEXT)
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{
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vty_out (vty, " Goto next, (entry ");
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if (index->next)
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vty_out (vty, " %d)%s", index->next->pref, VTY_NEWLINE);
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else
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vty_out (vty, " undefined)%s", VTY_NEWLINE);
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}
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else if (index->exitpolicy == RMAP_EXIT)
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vty_out (vty, " Exit routemap%s", VTY_NEWLINE);
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}
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}
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static int
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vty_show_route_map (struct vty *vty, const char *name)
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{
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struct route_map *map;
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if (name)
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{
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map = route_map_lookup_by_name (name);
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if (map)
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{
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vty_show_route_map_entry (vty, map);
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return CMD_SUCCESS;
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}
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else
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{
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vty_out (vty, "%%route-map %s not found%s", name, VTY_NEWLINE);
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return CMD_WARNING;
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}
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}
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return CMD_SUCCESS;
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}
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/* New route map allocation. Please note route map's name must be
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specified. */
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static struct route_map_index *
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route_map_index_new (void)
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{
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struct route_map_index *new;
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new = XCALLOC (MTYPE_ROUTE_MAP_INDEX, sizeof (struct route_map_index));
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new->exitpolicy = RMAP_EXIT; /* Default to Cisco-style */
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return new;
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}
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/* Free route map index. */
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static void
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route_map_index_delete (struct route_map_index *index, int notify)
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{
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struct route_map_rule *rule;
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/* Free route match. */
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while ((rule = index->match_list.head) != NULL)
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route_map_rule_delete (&index->match_list, rule);
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/* Free route set. */
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while ((rule = index->set_list.head) != NULL)
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route_map_rule_delete (&index->set_list, rule);
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/* Remove index from route map list. */
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if (index->next)
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index->next->prev = index->prev;
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else
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index->map->tail = index->prev;
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if (index->prev)
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index->prev->next = index->next;
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else
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index->map->head = index->next;
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/* Free 'char *nextrm' if not NULL */
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if (index->nextrm)
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free (index->nextrm);
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/* Execute event hook. */
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if (route_map_master.event_hook && notify)
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(*route_map_master.event_hook) (RMAP_EVENT_INDEX_DELETED,
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index->map->name);
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XFREE (MTYPE_ROUTE_MAP_INDEX, index);
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}
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/* Lookup index from route map. */
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static struct route_map_index *
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route_map_index_lookup (struct route_map *map, enum route_map_type type,
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int pref)
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{
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struct route_map_index *index;
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for (index = map->head; index; index = index->next)
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if ((index->type == type || type == RMAP_ANY)
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&& index->pref == pref)
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return index;
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return NULL;
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}
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/* Add new index to route map. */
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static struct route_map_index *
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route_map_index_add (struct route_map *map, enum route_map_type type,
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int pref)
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{
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struct route_map_index *index;
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struct route_map_index *point;
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/* Allocate new route map inex. */
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index = route_map_index_new ();
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index->map = map;
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index->type = type;
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index->pref = pref;
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/* Compare preference. */
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for (point = map->head; point; point = point->next)
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if (point->pref >= pref)
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break;
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if (map->head == NULL)
|
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{
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map->head = map->tail = index;
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}
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else if (point == NULL)
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{
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index->prev = map->tail;
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map->tail->next = index;
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map->tail = index;
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}
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else if (point == map->head)
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{
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index->next = map->head;
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map->head->prev = index;
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map->head = index;
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}
|
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else
|
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{
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index->next = point;
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index->prev = point->prev;
|
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if (point->prev)
|
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point->prev->next = index;
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point->prev = index;
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}
|
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|
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/* Execute event hook. */
|
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if (route_map_master.event_hook)
|
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(*route_map_master.event_hook) (RMAP_EVENT_INDEX_ADDED,
|
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map->name);
|
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|
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return index;
|
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}
|
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|
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/* Get route map index. */
|
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static struct route_map_index *
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route_map_index_get (struct route_map *map, enum route_map_type type,
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int pref)
|
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{
|
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struct route_map_index *index;
|
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|
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index = route_map_index_lookup (map, RMAP_ANY, pref);
|
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if (index && index->type != type)
|
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{
|
||
/* Delete index from route map. */
|
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route_map_index_delete (index, 1);
|
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index = NULL;
|
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}
|
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if (index == NULL)
|
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index = route_map_index_add (map, type, pref);
|
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return index;
|
||
}
|
||
|
||
/* New route map rule */
|
||
static struct route_map_rule *
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route_map_rule_new (void)
|
||
{
|
||
struct route_map_rule *new;
|
||
|
||
new = XCALLOC (MTYPE_ROUTE_MAP_RULE, sizeof (struct route_map_rule));
|
||
return new;
|
||
}
|
||
|
||
/* Install rule command to the match list. */
|
||
void
|
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route_map_install_match (struct route_map_rule_cmd *cmd)
|
||
{
|
||
vector_set (route_match_vec, cmd);
|
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}
|
||
|
||
/* Install rule command to the set list. */
|
||
void
|
||
route_map_install_set (struct route_map_rule_cmd *cmd)
|
||
{
|
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vector_set (route_set_vec, cmd);
|
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}
|
||
|
||
/* Lookup rule command from match list. */
|
||
static struct route_map_rule_cmd *
|
||
route_map_lookup_match (const char *name)
|
||
{
|
||
unsigned int i;
|
||
struct route_map_rule_cmd *rule;
|
||
|
||
for (i = 0; i < vector_active (route_match_vec); i++)
|
||
if ((rule = vector_slot (route_match_vec, i)) != NULL)
|
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if (strcmp (rule->str, name) == 0)
|
||
return rule;
|
||
return NULL;
|
||
}
|
||
|
||
/* Lookup rule command from set list. */
|
||
static struct route_map_rule_cmd *
|
||
route_map_lookup_set (const char *name)
|
||
{
|
||
unsigned int i;
|
||
struct route_map_rule_cmd *rule;
|
||
|
||
for (i = 0; i < vector_active (route_set_vec); i++)
|
||
if ((rule = vector_slot (route_set_vec, i)) != NULL)
|
||
if (strcmp (rule->str, name) == 0)
|
||
return rule;
|
||
return NULL;
|
||
}
|
||
|
||
/* Add match and set rule to rule list. */
|
||
static void
|
||
route_map_rule_add (struct route_map_rule_list *list,
|
||
struct route_map_rule *rule)
|
||
{
|
||
rule->next = NULL;
|
||
rule->prev = list->tail;
|
||
if (list->tail)
|
||
list->tail->next = rule;
|
||
else
|
||
list->head = rule;
|
||
list->tail = rule;
|
||
}
|
||
|
||
/* Delete rule from rule list. */
|
||
static void
|
||
route_map_rule_delete (struct route_map_rule_list *list,
|
||
struct route_map_rule *rule)
|
||
{
|
||
if (rule->cmd->func_free)
|
||
(*rule->cmd->func_free) (rule->value);
|
||
|
||
if (rule->rule_str)
|
||
XFREE (MTYPE_ROUTE_MAP_RULE_STR, rule->rule_str);
|
||
|
||
if (rule->next)
|
||
rule->next->prev = rule->prev;
|
||
else
|
||
list->tail = rule->prev;
|
||
if (rule->prev)
|
||
rule->prev->next = rule->next;
|
||
else
|
||
list->head = rule->next;
|
||
|
||
XFREE (MTYPE_ROUTE_MAP_RULE, rule);
|
||
}
|
||
|
||
/* strcmp wrapper function which don't crush even argument is NULL. */
|
||
static int
|
||
rulecmp (const char *dst, const char *src)
|
||
{
|
||
if (dst == NULL)
|
||
{
|
||
if (src == NULL)
|
||
return 0;
|
||
else
|
||
return 1;
|
||
}
|
||
else
|
||
{
|
||
if (src == NULL)
|
||
return 1;
|
||
else
|
||
return strcmp (dst, src);
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
/* Add match statement to route map. */
|
||
int
|
||
route_map_add_match (struct route_map_index *index, const char *match_name,
|
||
const char *match_arg)
|
||
{
|
||
struct route_map_rule *rule;
|
||
struct route_map_rule *next;
|
||
struct route_map_rule_cmd *cmd;
|
||
void *compile;
|
||
int replaced = 0;
|
||
|
||
/* First lookup rule for add match statement. */
|
||
cmd = route_map_lookup_match (match_name);
|
||
if (cmd == NULL)
|
||
return RMAP_RULE_MISSING;
|
||
|
||
/* Next call compile function for this match statement. */
|
||
if (cmd->func_compile)
|
||
{
|
||
compile= (*cmd->func_compile)(match_arg);
|
||
if (compile == NULL)
|
||
return RMAP_COMPILE_ERROR;
|
||
}
|
||
else
|
||
compile = NULL;
|
||
|
||
/* If argument is completely same ignore it. */
|
||
for (rule = index->match_list.head; rule; rule = next)
|
||
{
|
||
next = rule->next;
|
||
if (rule->cmd == cmd)
|
||
{
|
||
route_map_rule_delete (&index->match_list, rule);
|
||
replaced = 1;
|
||
}
|
||
}
|
||
|
||
/* Add new route map match rule. */
|
||
rule = route_map_rule_new ();
|
||
rule->cmd = cmd;
|
||
rule->value = compile;
|
||
if (match_arg)
|
||
rule->rule_str = XSTRDUP (MTYPE_ROUTE_MAP_RULE_STR, match_arg);
|
||
else
|
||
rule->rule_str = NULL;
|
||
|
||
/* Add new route match rule to linked list. */
|
||
route_map_rule_add (&index->match_list, rule);
|
||
|
||
/* Execute event hook. */
|
||
if (route_map_master.event_hook)
|
||
(*route_map_master.event_hook) (replaced ?
|
||
RMAP_EVENT_MATCH_REPLACED:
|
||
RMAP_EVENT_MATCH_ADDED,
|
||
index->map->name);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Delete specified route match rule. */
|
||
int
|
||
route_map_delete_match (struct route_map_index *index, const char *match_name,
|
||
const char *match_arg)
|
||
{
|
||
struct route_map_rule *rule;
|
||
struct route_map_rule_cmd *cmd;
|
||
|
||
cmd = route_map_lookup_match (match_name);
|
||
if (cmd == NULL)
|
||
return 1;
|
||
|
||
for (rule = index->match_list.head; rule; rule = rule->next)
|
||
if (rule->cmd == cmd &&
|
||
(rulecmp (rule->rule_str, match_arg) == 0 || match_arg == NULL))
|
||
{
|
||
route_map_rule_delete (&index->match_list, rule);
|
||
/* Execute event hook. */
|
||
if (route_map_master.event_hook)
|
||
(*route_map_master.event_hook) (RMAP_EVENT_MATCH_DELETED,
|
||
index->map->name);
|
||
return 0;
|
||
}
|
||
/* Can't find matched rule. */
|
||
return 1;
|
||
}
|
||
|
||
/* Add route-map set statement to the route map. */
|
||
int
|
||
route_map_add_set (struct route_map_index *index, const char *set_name,
|
||
const char *set_arg)
|
||
{
|
||
struct route_map_rule *rule;
|
||
struct route_map_rule *next;
|
||
struct route_map_rule_cmd *cmd;
|
||
void *compile;
|
||
int replaced = 0;
|
||
|
||
cmd = route_map_lookup_set (set_name);
|
||
if (cmd == NULL)
|
||
return RMAP_RULE_MISSING;
|
||
|
||
/* Next call compile function for this match statement. */
|
||
if (cmd->func_compile)
|
||
{
|
||
compile= (*cmd->func_compile)(set_arg);
|
||
if (compile == NULL)
|
||
return RMAP_COMPILE_ERROR;
|
||
}
|
||
else
|
||
compile = NULL;
|
||
|
||
/* Add by WJL. if old set command of same kind exist, delete it first
|
||
to ensure only one set command of same kind exist under a
|
||
route_map_index. */
|
||
for (rule = index->set_list.head; rule; rule = next)
|
||
{
|
||
next = rule->next;
|
||
if (rule->cmd == cmd)
|
||
{
|
||
route_map_rule_delete (&index->set_list, rule);
|
||
replaced = 1;
|
||
}
|
||
}
|
||
|
||
/* Add new route map match rule. */
|
||
rule = route_map_rule_new ();
|
||
rule->cmd = cmd;
|
||
rule->value = compile;
|
||
if (set_arg)
|
||
rule->rule_str = XSTRDUP (MTYPE_ROUTE_MAP_RULE_STR, set_arg);
|
||
else
|
||
rule->rule_str = NULL;
|
||
|
||
/* Add new route match rule to linked list. */
|
||
route_map_rule_add (&index->set_list, rule);
|
||
|
||
/* Execute event hook. */
|
||
if (route_map_master.event_hook)
|
||
(*route_map_master.event_hook) (replaced ?
|
||
RMAP_EVENT_SET_REPLACED:
|
||
RMAP_EVENT_SET_ADDED,
|
||
index->map->name);
|
||
return 0;
|
||
}
|
||
|
||
/* Delete route map set rule. */
|
||
int
|
||
route_map_delete_set (struct route_map_index *index, const char *set_name,
|
||
const char *set_arg)
|
||
{
|
||
struct route_map_rule *rule;
|
||
struct route_map_rule_cmd *cmd;
|
||
|
||
cmd = route_map_lookup_set (set_name);
|
||
if (cmd == NULL)
|
||
return 1;
|
||
|
||
for (rule = index->set_list.head; rule; rule = rule->next)
|
||
if ((rule->cmd == cmd) &&
|
||
(rulecmp (rule->rule_str, set_arg) == 0 || set_arg == NULL))
|
||
{
|
||
route_map_rule_delete (&index->set_list, rule);
|
||
/* Execute event hook. */
|
||
if (route_map_master.event_hook)
|
||
(*route_map_master.event_hook) (RMAP_EVENT_SET_DELETED,
|
||
index->map->name);
|
||
return 0;
|
||
}
|
||
/* Can't find matched rule. */
|
||
return 1;
|
||
}
|
||
|
||
/* Apply route map's each index to the object.
|
||
|
||
The matrix for a route-map looks like this:
|
||
(note, this includes the description for the "NEXT"
|
||
and "GOTO" frobs now
|
||
|
||
Match | No Match
|
||
|
|
||
permit action | cont
|
||
|
|
||
------------------+---------------
|
||
|
|
||
deny deny | cont
|
||
|
|
||
|
||
action)
|
||
-Apply Set statements, accept route
|
||
-If Call statement is present jump to the specified route-map, if it
|
||
denies the route we finish.
|
||
-If NEXT is specified, goto NEXT statement
|
||
-If GOTO is specified, goto the first clause where pref > nextpref
|
||
-If nothing is specified, do as Cisco and finish
|
||
deny)
|
||
-Route is denied by route-map.
|
||
cont)
|
||
-Goto Next index
|
||
|
||
If we get no matches after we've processed all updates, then the route
|
||
is dropped too.
|
||
|
||
Some notes on the new "CALL", "NEXT" and "GOTO"
|
||
call WORD - If this clause is matched, then the set statements
|
||
are executed and then we jump to route-map 'WORD'. If
|
||
this route-map denies the route, we finish, in other case we
|
||
do whatever the exit policy (EXIT, NEXT or GOTO) tells.
|
||
on-match next - If this clause is matched, then the set statements
|
||
are executed and then we drop through to the next clause
|
||
on-match goto n - If this clause is matched, then the set statments
|
||
are executed and then we goto the nth clause, or the
|
||
first clause greater than this. In order to ensure
|
||
route-maps *always* exit, you cannot jump backwards.
|
||
Sorry ;)
|
||
|
||
We need to make sure our route-map processing matches the above
|
||
*/
|
||
|
||
static route_map_result_t
|
||
route_map_apply_match (struct route_map_rule_list *match_list,
|
||
struct prefix *prefix, route_map_object_t type,
|
||
void *object)
|
||
{
|
||
route_map_result_t ret = RMAP_NOMATCH;
|
||
struct route_map_rule *match;
|
||
|
||
|
||
/* Check all match rule and if there is no match rule, go to the
|
||
set statement. */
|
||
if (!match_list->head)
|
||
ret = RMAP_MATCH;
|
||
else
|
||
{
|
||
for (match = match_list->head; match; match = match->next)
|
||
{
|
||
/* Try each match statement in turn, If any do not return
|
||
RMAP_MATCH, return, otherwise continue on to next match
|
||
statement. All match statements must match for end-result
|
||
to be a match. */
|
||
ret = (*match->cmd->func_apply) (match->value, prefix,
|
||
type, object);
|
||
if (ret != RMAP_MATCH)
|
||
return ret;
|
||
}
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
/* Apply route map to the object. */
|
||
route_map_result_t
|
||
route_map_apply (struct route_map *map, struct prefix *prefix,
|
||
route_map_object_t type, void *object)
|
||
{
|
||
static int recursion = 0;
|
||
int ret = 0;
|
||
struct route_map_index *index;
|
||
struct route_map_rule *set;
|
||
|
||
if (recursion > RMAP_RECURSION_LIMIT)
|
||
{
|
||
zlog (NULL, LOG_WARNING,
|
||
"route-map recursion limit (%d) reached, discarding route",
|
||
RMAP_RECURSION_LIMIT);
|
||
recursion = 0;
|
||
return RMAP_DENYMATCH;
|
||
}
|
||
|
||
if (map == NULL)
|
||
return RMAP_DENYMATCH;
|
||
|
||
for (index = map->head; index; index = index->next)
|
||
{
|
||
/* Apply this index. */
|
||
ret = route_map_apply_match (&index->match_list, prefix, type, object);
|
||
|
||
/* Now we apply the matrix from above */
|
||
if (ret == RMAP_NOMATCH)
|
||
/* 'cont' from matrix - continue to next route-map sequence */
|
||
continue;
|
||
else if (ret == RMAP_MATCH)
|
||
{
|
||
if (index->type == RMAP_PERMIT)
|
||
/* 'action' */
|
||
{
|
||
/* permit+match must execute sets */
|
||
for (set = index->set_list.head; set; set = set->next)
|
||
ret = (*set->cmd->func_apply) (set->value, prefix,
|
||
type, object);
|
||
|
||
/* Call another route-map if available */
|
||
if (index->nextrm)
|
||
{
|
||
struct route_map *nextrm =
|
||
route_map_lookup_by_name (index->nextrm);
|
||
|
||
if (nextrm) /* Target route-map found, jump to it */
|
||
{
|
||
recursion++;
|
||
ret = route_map_apply (nextrm, prefix, type, object);
|
||
recursion--;
|
||
}
|
||
|
||
/* If nextrm returned 'deny', finish. */
|
||
if (ret == RMAP_DENYMATCH)
|
||
return ret;
|
||
}
|
||
|
||
switch (index->exitpolicy)
|
||
{
|
||
case RMAP_EXIT:
|
||
return ret;
|
||
case RMAP_NEXT:
|
||
continue;
|
||
case RMAP_GOTO:
|
||
{
|
||
/* Find the next clause to jump to */
|
||
struct route_map_index *next = index->next;
|
||
int nextpref = index->nextpref;
|
||
|
||
while (next && next->pref < nextpref)
|
||
{
|
||
index = next;
|
||
next = next->next;
|
||
}
|
||
if (next == NULL)
|
||
{
|
||
/* No clauses match! */
|
||
return ret;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
else if (index->type == RMAP_DENY)
|
||
/* 'deny' */
|
||
{
|
||
return RMAP_DENYMATCH;
|
||
}
|
||
}
|
||
}
|
||
/* Finally route-map does not match at all. */
|
||
return RMAP_DENYMATCH;
|
||
}
|
||
|
||
void
|
||
route_map_add_hook (void (*func) (const char *))
|
||
{
|
||
route_map_master.add_hook = func;
|
||
}
|
||
|
||
void
|
||
route_map_delete_hook (void (*func) (const char *))
|
||
{
|
||
route_map_master.delete_hook = func;
|
||
}
|
||
|
||
void
|
||
route_map_event_hook (void (*func) (route_map_event_t, const char *))
|
||
{
|
||
route_map_master.event_hook = func;
|
||
}
|
||
|
||
void
|
||
route_map_init (void)
|
||
{
|
||
/* Make vector for match and set. */
|
||
route_match_vec = vector_init (1);
|
||
route_set_vec = vector_init (1);
|
||
}
|
||
|
||
/* VTY related functions. */
|
||
DEFUN (route_map,
|
||
route_map_cmd,
|
||
"route-map WORD (deny|permit) <1-65535>",
|
||
"Create route-map or enter route-map command mode\n"
|
||
"Route map tag\n"
|
||
"Route map denies set operations\n"
|
||
"Route map permits set operations\n"
|
||
"Sequence to insert to/delete from existing route-map entry\n")
|
||
{
|
||
int permit;
|
||
unsigned long pref;
|
||
struct route_map *map;
|
||
struct route_map_index *index;
|
||
char *endptr = NULL;
|
||
|
||
/* Permit check. */
|
||
if (strncmp (argv[1], "permit", strlen (argv[1])) == 0)
|
||
permit = RMAP_PERMIT;
|
||
else if (strncmp (argv[1], "deny", strlen (argv[1])) == 0)
|
||
permit = RMAP_DENY;
|
||
else
|
||
{
|
||
vty_out (vty, "the third field must be [permit|deny]%s", VTY_NEWLINE);
|
||
return CMD_WARNING;
|
||
}
|
||
|
||
/* Preference check. */
|
||
pref = strtoul (argv[2], &endptr, 10);
|
||
if (pref == ULONG_MAX || *endptr != '\0')
|
||
{
|
||
vty_out (vty, "the fourth field must be positive integer%s",
|
||
VTY_NEWLINE);
|
||
return CMD_WARNING;
|
||
}
|
||
if (pref == 0 || pref > 65535)
|
||
{
|
||
vty_out (vty, "the fourth field must be <1-65535>%s", VTY_NEWLINE);
|
||
return CMD_WARNING;
|
||
}
|
||
|
||
/* Get route map. */
|
||
map = route_map_get (argv[0]);
|
||
index = route_map_index_get (map, permit, pref);
|
||
|
||
vty->index = index;
|
||
vty->node = RMAP_NODE;
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
DEFUN (no_route_map_all,
|
||
no_route_map_all_cmd,
|
||
"no route-map WORD",
|
||
NO_STR
|
||
"Create route-map or enter route-map command mode\n"
|
||
"Route map tag\n")
|
||
{
|
||
struct route_map *map;
|
||
|
||
map = route_map_lookup_by_name (argv[0]);
|
||
if (map == NULL)
|
||
{
|
||
vty_out (vty, "%% Could not find route-map %s%s",
|
||
argv[0], VTY_NEWLINE);
|
||
return CMD_WARNING;
|
||
}
|
||
|
||
route_map_delete (map);
|
||
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
DEFUN (no_route_map,
|
||
no_route_map_cmd,
|
||
"no route-map WORD (deny|permit) <1-65535>",
|
||
NO_STR
|
||
"Create route-map or enter route-map command mode\n"
|
||
"Route map tag\n"
|
||
"Route map denies set operations\n"
|
||
"Route map permits set operations\n"
|
||
"Sequence to insert to/delete from existing route-map entry\n")
|
||
{
|
||
int permit;
|
||
unsigned long pref;
|
||
struct route_map *map;
|
||
struct route_map_index *index;
|
||
char *endptr = NULL;
|
||
|
||
/* Permit check. */
|
||
if (strncmp (argv[1], "permit", strlen (argv[1])) == 0)
|
||
permit = RMAP_PERMIT;
|
||
else if (strncmp (argv[1], "deny", strlen (argv[1])) == 0)
|
||
permit = RMAP_DENY;
|
||
else
|
||
{
|
||
vty_out (vty, "the third field must be [permit|deny]%s", VTY_NEWLINE);
|
||
return CMD_WARNING;
|
||
}
|
||
|
||
/* Preference. */
|
||
pref = strtoul (argv[2], &endptr, 10);
|
||
if (pref == ULONG_MAX || *endptr != '\0')
|
||
{
|
||
vty_out (vty, "the fourth field must be positive integer%s",
|
||
VTY_NEWLINE);
|
||
return CMD_WARNING;
|
||
}
|
||
if (pref == 0 || pref > 65535)
|
||
{
|
||
vty_out (vty, "the fourth field must be <1-65535>%s", VTY_NEWLINE);
|
||
return CMD_WARNING;
|
||
}
|
||
|
||
/* Existence check. */
|
||
map = route_map_lookup_by_name (argv[0]);
|
||
if (map == NULL)
|
||
{
|
||
vty_out (vty, "%% Could not find route-map %s%s",
|
||
argv[0], VTY_NEWLINE);
|
||
return CMD_WARNING;
|
||
}
|
||
|
||
/* Lookup route map index. */
|
||
index = route_map_index_lookup (map, permit, pref);
|
||
if (index == NULL)
|
||
{
|
||
vty_out (vty, "%% Could not find route-map entry %s %s%s",
|
||
argv[0], argv[2], VTY_NEWLINE);
|
||
return CMD_WARNING;
|
||
}
|
||
|
||
/* Delete index from route map. */
|
||
route_map_index_delete (index, 1);
|
||
|
||
/* If this route rule is the last one, delete route map itself. */
|
||
if (route_map_empty (map))
|
||
route_map_delete (map);
|
||
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
DEFUN (rmap_onmatch_next,
|
||
rmap_onmatch_next_cmd,
|
||
"on-match next",
|
||
"Exit policy on matches\n"
|
||
"Next clause\n")
|
||
{
|
||
struct route_map_index *index;
|
||
|
||
index = vty->index;
|
||
|
||
if (index)
|
||
index->exitpolicy = RMAP_NEXT;
|
||
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
DEFUN (no_rmap_onmatch_next,
|
||
no_rmap_onmatch_next_cmd,
|
||
"no on-match next",
|
||
NO_STR
|
||
"Exit policy on matches\n"
|
||
"Next clause\n")
|
||
{
|
||
struct route_map_index *index;
|
||
|
||
index = vty->index;
|
||
|
||
if (index)
|
||
index->exitpolicy = RMAP_EXIT;
|
||
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
DEFUN (rmap_onmatch_goto,
|
||
rmap_onmatch_goto_cmd,
|
||
"on-match goto <1-65535>",
|
||
"Exit policy on matches\n"
|
||
"Goto Clause number\n"
|
||
"Number\n")
|
||
{
|
||
struct route_map_index *index;
|
||
int d = 0;
|
||
|
||
if (argv[0])
|
||
d = atoi(argv[0]);
|
||
|
||
index = vty->index;
|
||
if (index)
|
||
{
|
||
if (d <= index->pref)
|
||
{
|
||
/* Can't allow you to do that, Dave */
|
||
vty_out (vty, "can't jump backwards in route-maps%s",
|
||
VTY_NEWLINE);
|
||
return CMD_WARNING;
|
||
}
|
||
else
|
||
{
|
||
index->exitpolicy = RMAP_GOTO;
|
||
index->nextpref = d;
|
||
}
|
||
}
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
DEFUN (no_rmap_onmatch_goto,
|
||
no_rmap_onmatch_goto_cmd,
|
||
"no on-match goto",
|
||
NO_STR
|
||
"Exit policy on matches\n"
|
||
"Goto Clause number\n")
|
||
{
|
||
struct route_map_index *index;
|
||
|
||
index = vty->index;
|
||
|
||
if (index)
|
||
index->exitpolicy = RMAP_EXIT;
|
||
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
/* Cisco/GNU Zebra compatible ALIASes for on-match next */
|
||
ALIAS (rmap_onmatch_goto,
|
||
rmap_continue_cmd,
|
||
"continue",
|
||
"Continue on a different entry within the route-map\n")
|
||
|
||
ALIAS (no_rmap_onmatch_goto,
|
||
no_rmap_continue_cmd,
|
||
"no continue",
|
||
NO_STR
|
||
"Continue on a different entry within the route-map\n")
|
||
|
||
/* GNU Zebra compatible */
|
||
ALIAS (rmap_onmatch_goto,
|
||
rmap_continue_seq_cmd,
|
||
"continue <1-65535>",
|
||
"Continue on a different entry within the route-map\n"
|
||
"Route-map entry sequence number\n")
|
||
|
||
ALIAS (no_rmap_onmatch_goto,
|
||
no_rmap_continue_seq,
|
||
"no continue <1-65535>",
|
||
NO_STR
|
||
"Continue on a different entry within the route-map\n"
|
||
"Route-map entry sequence number\n")
|
||
|
||
DEFUN (rmap_show,
|
||
rmap_show_cmd,
|
||
"show route-map",
|
||
SHOW_STR
|
||
"route-map information\n")
|
||
{
|
||
return vty_show_route_map (vty, NULL);
|
||
}
|
||
|
||
DEFUN (rmap_show_name,
|
||
rmap_show_name_cmd,
|
||
"show route-map WORD",
|
||
SHOW_STR
|
||
"route-map information\n"
|
||
"route-map name\n")
|
||
{
|
||
return vty_show_route_map (vty, argv[0]);
|
||
}
|
||
|
||
ALIAS (rmap_onmatch_goto,
|
||
rmap_continue_index_cmd,
|
||
"continue <1-65536>",
|
||
"Exit policy on matches\n"
|
||
"Goto Clause number\n")
|
||
|
||
DEFUN (rmap_call,
|
||
rmap_call_cmd,
|
||
"call WORD",
|
||
"Jump to another Route-Map after match+set\n"
|
||
"Target route-map name\n")
|
||
{
|
||
struct route_map_index *index;
|
||
|
||
index = vty->index;
|
||
if (index)
|
||
{
|
||
if (index->nextrm)
|
||
free (index->nextrm);
|
||
index->nextrm = strdup (argv[0]);
|
||
}
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
DEFUN (no_rmap_call,
|
||
no_rmap_call_cmd,
|
||
"no call",
|
||
NO_STR
|
||
"Jump to another Route-Map after match+set\n")
|
||
{
|
||
struct route_map_index *index;
|
||
|
||
index = vty->index;
|
||
|
||
if (index->nextrm)
|
||
{
|
||
free (index->nextrm);
|
||
index->nextrm = NULL;
|
||
}
|
||
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
DEFUN (rmap_description,
|
||
rmap_description_cmd,
|
||
"description .LINE",
|
||
"Route-map comment\n"
|
||
"Comment describing this route-map rule\n")
|
||
{
|
||
struct route_map_index *index;
|
||
|
||
index = vty->index;
|
||
if (index)
|
||
{
|
||
if (index->description)
|
||
XFREE (MTYPE_TMP, index->description);
|
||
index->description = argv_concat (argv, argc, 0);
|
||
}
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
DEFUN (no_rmap_description,
|
||
no_rmap_description_cmd,
|
||
"no description",
|
||
NO_STR
|
||
"Route-map comment\n")
|
||
{
|
||
struct route_map_index *index;
|
||
|
||
index = vty->index;
|
||
if (index)
|
||
{
|
||
if (index->description)
|
||
XFREE (MTYPE_TMP, index->description);
|
||
index->description = NULL;
|
||
}
|
||
return CMD_SUCCESS;
|
||
}
|
||
|
||
/* Configuration write function. */
|
||
static int
|
||
route_map_config_write (struct vty *vty)
|
||
{
|
||
struct route_map *map;
|
||
struct route_map_index *index;
|
||
struct route_map_rule *rule;
|
||
int first = 1;
|
||
int write = 0;
|
||
|
||
for (map = route_map_master.head; map; map = map->next)
|
||
for (index = map->head; index; index = index->next)
|
||
{
|
||
if (!first)
|
||
vty_out (vty, "!%s", VTY_NEWLINE);
|
||
else
|
||
first = 0;
|
||
|
||
vty_out (vty, "route-map %s %s %d%s",
|
||
map->name,
|
||
route_map_type_str (index->type),
|
||
index->pref, VTY_NEWLINE);
|
||
|
||
if (index->description)
|
||
vty_out (vty, " description %s%s", index->description, VTY_NEWLINE);
|
||
|
||
for (rule = index->match_list.head; rule; rule = rule->next)
|
||
vty_out (vty, " match %s %s%s", rule->cmd->str,
|
||
rule->rule_str ? rule->rule_str : "",
|
||
VTY_NEWLINE);
|
||
|
||
for (rule = index->set_list.head; rule; rule = rule->next)
|
||
vty_out (vty, " set %s %s%s", rule->cmd->str,
|
||
rule->rule_str ? rule->rule_str : "",
|
||
VTY_NEWLINE);
|
||
if (index->nextrm)
|
||
vty_out (vty, " call %s%s", index->nextrm, VTY_NEWLINE);
|
||
if (index->exitpolicy == RMAP_GOTO)
|
||
vty_out (vty, " on-match goto %d%s", index->nextpref, VTY_NEWLINE);
|
||
if (index->exitpolicy == RMAP_NEXT)
|
||
vty_out (vty," on-match next%s", VTY_NEWLINE);
|
||
|
||
write++;
|
||
}
|
||
return write;
|
||
}
|
||
|
||
/* Route map node structure. */
|
||
struct cmd_node rmap_node =
|
||
{
|
||
RMAP_NODE,
|
||
"%s(config-route-map)# ",
|
||
1
|
||
};
|
||
|
||
/* Initialization of route map vector. */
|
||
void
|
||
route_map_init_vty (void)
|
||
{
|
||
/* Install route map top node. */
|
||
install_node (&rmap_node, route_map_config_write);
|
||
|
||
/* Install route map commands. */
|
||
install_default (RMAP_NODE);
|
||
install_element (CONFIG_NODE, &route_map_cmd);
|
||
install_element (CONFIG_NODE, &no_route_map_cmd);
|
||
install_element (CONFIG_NODE, &no_route_map_all_cmd);
|
||
|
||
/* Install the on-match stuff */
|
||
install_element (RMAP_NODE, &route_map_cmd);
|
||
install_element (RMAP_NODE, &rmap_onmatch_next_cmd);
|
||
install_element (RMAP_NODE, &no_rmap_onmatch_next_cmd);
|
||
install_element (RMAP_NODE, &rmap_onmatch_goto_cmd);
|
||
install_element (RMAP_NODE, &no_rmap_onmatch_goto_cmd);
|
||
|
||
/* Install the continue stuff (ALIAS of on-match). */
|
||
install_element (RMAP_NODE, &rmap_continue_cmd);
|
||
install_element (RMAP_NODE, &no_rmap_continue_cmd);
|
||
install_element (RMAP_NODE, &rmap_continue_index_cmd);
|
||
|
||
/* Install the call stuff. */
|
||
install_element (RMAP_NODE, &rmap_call_cmd);
|
||
install_element (RMAP_NODE, &no_rmap_call_cmd);
|
||
|
||
/* Install description commands. */
|
||
install_element (RMAP_NODE, &rmap_description_cmd);
|
||
install_element (RMAP_NODE, &no_rmap_description_cmd);
|
||
|
||
/* Install show command */
|
||
install_element (ENABLE_NODE, &rmap_show_cmd);
|
||
install_element (ENABLE_NODE, &rmap_show_name_cmd);
|
||
}
|