/*      $OpenBSD: acl.h,v 1.7 2003/06/02 21:58:27 maja Exp $ */

/*
 * Copyright (c) 1994 Mats O Jansson <moj@stacken.kth.se>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _ACL_H_
#define _ACL_H_

#define ACLD_ALL                2
#define ACLD_HOST               4
#define ACLD_NET                6
#define ACLD_HOST_DONE          4
#define ACLD_NET_DONE           4
#define ACLD_NET_MASK           2
#define ACLD_NET_EOL            2

#define ACLS_INIT               1
#define ACLS_ALLOW              2
#define ACLS_DENY               3
#define ACLS_ALLOW_ALL          ACLS_ALLOW+ACLD_ALL               /*  4 */
#define ACLS_DENY_ALL           ACLS_DENY+ACLD_ALL                /*  5 */
#define ACLS_ALLOW_HOST         ACLS_ALLOW+ACLD_HOST              /*  6 */
#define ACLS_DENY_HOST          ACLS_DENY+ACLD_HOST               /*  7 */
#define ACLS_ALLOW_NET          ACLS_ALLOW+ACLD_NET               /*  8 */
#define ACLS_DENY_NET           ACLS_DENY+ACLD_NET                /*  9 */
#define ACLS_ALLOW_HOST_DONE    ACLS_ALLOW_HOST+ACLD_HOST_DONE    /* 10 */
#define ACLS_DENY_HOST_DONE     ACLS_DENY_HOST+ACLD_HOST_DONE     /* 11 */
#define ACLS_ALLOW_NET_DONE     ACLS_ALLOW_NET+ACLD_NET_DONE      /* 12 */
#define ACLS_DENY_NET_DONE      ACLS_DENY_NET+ACLD_NET_DONE       /* 13 */
#define ACLS_ALLOW_NET_MASK     ACLS_ALLOW_NET_DONE+ACLD_NET_MASK /* 14 */
#define ACLS_DENY_NET_MASK      ACLS_DENY_NET_DONE+ACLD_NET_MASK  /* 15 */
#define ACLS_ALLOW_NET_EOL      ACLS_ALLOW_NET_MASK+ACLD_NET_EOL  /* 16 */
#define ACLS_DENY_NET_EOL       ACLS_DENY_NET_MASK+ACLD_NET_EOL   /* 17 */

#define ACLE_NONETMASK          18
#define ACLE_NONET              19
#define ACLE_NOHOST             20
#define ACLE_UVERB              21
#define ACLE_U2VERB             22
#define ACLE_UEOL               23
#define ACLE_OK                 24

struct  aclent {
struct  aclent  *next;
        int     allow;
        u_long  s_addr;
        u_long  s_mask;
};

__BEGIN_DECLS
int             acl_check_host(struct in_addr *);
int             acl_init(char *);
int             acl_securenet(char *);
void            acl_reset(void);
__END_DECLS

#endif /* !_ACL_H_ */