2 * Copyright (C) 1993-1997 by Darren Reed.
4 * Redistribution and use in source and binary forms are permitted
5 * provided that this notice is preserved and due credit is given
6 * to the original author and the contributors.
9 # include <osreldate.h>
14 #include <sys/types.h>
15 #if !defined(__SVR4) && !defined(__svr4__) && !defined(__sgi)
19 #include <sys/byteorder.h>
23 #include <sys/param.h>
28 #include <sys/socket.h>
29 #include <sys/ioctl.h>
30 #include <netinet/in.h>
31 #include <netinet/in_systm.h>
33 #include <netinet/ip_var.h>
35 #include <netinet/ip.h>
36 #include <netinet/udp.h>
37 #include <netinet/tcp.h>
38 #include <netinet/ip_icmp.h>
40 #if __FreeBSD_version >= 300000
41 # include <net/if_var.h>
44 #include <arpa/nameser.h>
45 #include <arpa/inet.h>
48 #include "ip_compat.h"
49 #include <netinet/tcpip.h>
55 static const char sccsid[] = "@(#)ipt.c 1.19 6/3/96 (C) 1993-1996 Darren Reed";
56 static const char rcsid[] = "@(#)$Id: ipt.c,v 2.0.2.12.2.1 1997/11/12 10:58:10 darrenr Exp $";
60 extern struct frentry *ipfilter[2][2];
61 extern struct ipread snoop, etherf, tcpd, pcap, iptext, iphex;
62 extern struct ifnet *get_unit __P((char *));
63 extern void init_ifp __P((void));
66 int main __P((int, char *[]));
72 struct ipread *r = &iptext;
75 char *rules = NULL, *datain = NULL, *iface = NULL;
77 int fd, i, dir = 0, c;
79 while ((c = getopt(argc, argv, "bdEHi:I:oPr:STvX")) != -1)
124 (void)fprintf(stderr,"no rule file present\n");
135 if (!strcmp(rules, "-"))
137 else if (!(fp = fopen(rules, "r"))) {
138 (void)fprintf(stderr, "couldn't open %s\n", rules);
141 if (!(opts & OPT_BRIEF))
142 (void)printf("opening rule file \"%s\"\n", rules);
143 while (fgets(line, sizeof(line)-1, fp)) {
145 * treat both CR and LF as EOL
147 if ((s = index(line, '\n')))
149 if ((s = index(line, '\r')))
152 * # is comment marker, everything after is a ignored
154 if ((s = index(line, '#')))
160 if (!(fr = parse(line)))
162 /* fake an `ioctl' call :) */
163 i = IPL_EXTERN(ioctl)(0, SIOCADDFR, (caddr_t)fr, FWRITE|FREAD);
164 if (opts & OPT_DEBUG)
166 "iplioctl(SIOCADDFR,%p,1) = %d\n",
172 if (opts & OPT_SAVEOUT)
176 fd = (*r->r_open)(datain);
178 fd = (*r->r_open)("-");
184 while ((i = (*r->r_readip)((char *)buf, sizeof(buf),
185 &iface, &dir)) > 0) {
186 ifp = iface ? get_unit(iface) : NULL;
187 ip->ip_off = ntohs(ip->ip_off);
188 ip->ip_len = ntohs(ip->ip_len);
189 switch (fr_check(ip, ip->ip_hl << 2, ifp, dir, (mb_t **)&buf))
192 (void)printf("auth");
195 (void)printf("block");
198 (void)printf("pass");
201 (void)printf("nomatch");
204 if (!(opts & OPT_BRIEF)) {
206 printpacket((ip_t *)buf);
207 printf("--------------");
210 if (dir && ifp && ip->ip_v)
212 (*ifp->if_output)(ifp, (void *)buf, NULL);
214 (*ifp->if_output)(ifp, (void *)buf, NULL, 0);