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/*
* Written by Toshiharu OHNO (tony-o@iij.ad.jp)
*
* Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the Internet Initiative Japan. The name of the
* IIJ may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: filter.h,v 1.10 1997/10/26 01:02:35 brian Exp $
*
* TODO:
*/
/*
* Actions
*/
#define A_NONE 0
#define A_PERMIT 1
#define A_DENY 2
#define A_MASK 3
#define A_UHOST 4
#define A_UPORT 8
/*
* Known protocols
*/
#define P_NONE 0
#define P_TCP 1
#define P_UDP 2
#define P_ICMP 3
/*
* Operations
*/
#define OP_NONE 0
#define OP_EQ 1
#define OP_GT 2
#define OP_LT 4
struct filterent {
int action; /* Filtering action */
int swidth; /* Effective source address width */
struct in_addr saddr; /* Source address */
struct in_addr smask; /* Source address mask */
int dwidth; /* Effective destination address width */
struct in_addr daddr; /* Destination address */
struct in_addr dmask; /* Destination address mask */
int proto; /* Protocol */
struct {
short srcop;
u_short srcport;
short dstop;
u_short dstport;
int estab;
} opt;
};
#define MAXFILTERS 20
#define FL_IN 0
#define FL_OUT 1
#define FL_DIAL 2
#define FL_KEEP 3
extern struct filterent ifilters[MAXFILTERS]; /* incoming packet filter */
extern struct filterent ofilters[MAXFILTERS]; /* outgoing packet filter */
extern struct filterent dfilters[MAXFILTERS]; /* dial-out packet filter */
extern struct filterent afilters[MAXFILTERS]; /* keep-alive packet filter */
extern int ParseAddr(int, char const *const *, struct in_addr *, struct in_addr *, int *);
extern int ShowIfilter(struct cmdargs const *);
extern int ShowOfilter(struct cmdargs const *);
extern int ShowDfilter(struct cmdargs const *);
extern int ShowAfilter(struct cmdargs const *);
extern int SetIfilter(struct cmdargs const *);
extern int SetOfilter(struct cmdargs const *);
extern int SetDfilter(struct cmdargs const *);
extern int SetAfilter(struct cmdargs const *);
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