lib/filter.h

   1 /*
   2  * Route filtering function.
   3  * Copyright (C) 1998 Kunihiro Ishiguro
   4  *
   5  * This file is part of GNU Zebra.
   6  *
   7  * GNU Zebra is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation; either version 2, or (at your
  10  * option) any later version.
  11  *
  12  * GNU Zebra is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; see the file COPYING; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #ifndef _ZEBRA_FILTER_H
  23 #define _ZEBRA_FILTER_H
  24
  25 #include "if.h"
  26
  27 #ifdef __cplusplus
  28 extern "C" {
  29 #endif
  30
  31 /* Maximum ACL name length */
  32 #define ACL_NAMSIZ                128
  33
  34 /* Filter direction.  */
  35 #define FILTER_IN                 0
  36 #define FILTER_OUT                1
  37 #define FILTER_MAX                2
  38
  39 /* Filter type is made by `permit', `deny' and `dynamic'. */
  40 enum filter_type { FILTER_DENY, FILTER_PERMIT, FILTER_DYNAMIC };
  41
  42 enum access_type { ACCESS_TYPE_STRING, ACCESS_TYPE_NUMBER };
  43
  44 /* Access list */
  45 struct access_list {
  46         char *name;
  47         char *remark;
  48
  49         struct access_master *master;
  50
  51         enum access_type type;
  52
  53         struct access_list *next;
  54         struct access_list *prev;
  55
  56         struct filter *head;
  57         struct filter *tail;
  58 };
  59
  60 /* Prototypes for access-list. */
  61 extern void access_list_init(void);
  62 extern void access_list_reset(void);
  63 extern void access_list_add_hook(void (*func)(struct access_list *));
  64 extern void access_list_delete_hook(void (*func)(struct access_list *));
  65 extern struct access_list *access_list_lookup(afi_t, const char *);
  66 extern enum filter_type access_list_apply(struct access_list *access,
  67                                           const void *object);
  68
  69 #ifdef __cplusplus
  70 }
  71 #endif
  72
  73 #endif /* _ZEBRA_FILTER_H */