2 * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22 #define NETDISSECT_REWORKED
27 #ifndef HAVE_NET_PFVAR_H
28 #error "No pf headers available"
30 #include <sys/types.h>
31 #include <sys/socket.h>
33 #include <net/pfvar.h>
34 #include <net/if_pflog.h>
36 #include <tcpdump-stdinc.h>
38 #include "interface.h"
41 static const char tstr[] = "[|pflog]";
43 static const struct tok pf_reasons[] = {
45 { 1, "1(bad-offset)" },
48 { 4, "4(normalize)" },
50 { 6, "6(bad-timestamp)" },
51 { 7, "7(congestion)" },
52 { 8, "8(ip-option)" },
53 { 9, "9(proto-cksum)" },
54 { 10, "10(state-mismatch)" },
55 { 11, "11(state-insert)" },
56 { 12, "12(state-limit)" },
57 { 13, "13(src-limit)" },
58 { 14, "14(synproxy)" },
62 static const struct tok pf_actions[] = {
65 { PF_SCRUB, "scrub" },
68 { PF_BINAT, "binat" },
69 { PF_NOBINAT, "binat" },
72 { PF_SYNPROXY_DROP, "synproxy-drop" },
76 static const struct tok pf_directions[] = {
77 { PF_INOUT, "in/out" },
83 /* For reading capture files on other systems */
84 #define OPENBSD_AF_INET 2
85 #define OPENBSD_AF_INET6 24
88 pflog_print(netdissect_options *ndo, const struct pfloghdr *hdr)
90 uint32_t rulenr, subrulenr;
92 rulenr = EXTRACT_32BITS(&hdr->rulenr);
93 subrulenr = EXTRACT_32BITS(&hdr->subrulenr);
94 if (subrulenr == (uint32_t)-1)
95 ND_PRINT((ndo, "rule %u/", rulenr));
97 ND_PRINT((ndo, "rule %u.%s.%u/", rulenr, hdr->ruleset, subrulenr));
99 ND_PRINT((ndo, "%s: %s %s on %s: ",
100 tok2str(pf_reasons, "unkn(%u)", hdr->reason),
101 tok2str(pf_actions, "unkn(%u)", hdr->action),
102 tok2str(pf_directions, "unkn(%u)", hdr->dir),
107 pflog_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h,
108 register const u_char *p)
110 u_int length = h->len;
112 u_int caplen = h->caplen;
113 const struct pfloghdr *hdr;
117 if (caplen < sizeof(uint8_t)) {
118 ND_PRINT((ndo, "%s", tstr));
122 #define MIN_PFLOG_HDRLEN 45
123 hdr = (struct pfloghdr *)p;
124 if (hdr->length < MIN_PFLOG_HDRLEN) {
125 ND_PRINT((ndo, "[pflog: invalid header length!]"));
126 return (hdr->length); /* XXX: not really */
128 hdrlen = BPF_WORDALIGN(hdr->length);
130 if (caplen < hdrlen) {
131 ND_PRINT((ndo, "%s", tstr));
132 return (hdrlen); /* XXX: true? */
135 /* print what we know */
136 hdr = (struct pfloghdr *)p;
139 pflog_print(ndo, hdr);
141 /* skip to the real packet */
149 #if OPENBSD_AF_INET != AF_INET
150 case OPENBSD_AF_INET: /* XXX: read pcap files */
152 ip_print(ndo, p, length);
157 #if OPENBSD_AF_INET6 != AF_INET6
158 case OPENBSD_AF_INET6: /* XXX: read pcap files */
160 ip6_print(ndo, p, length);
165 /* address family not handled, print raw packet */
167 pflog_print(ndo, hdr);
168 if (!ndo->ndo_suppress_default_print)
169 ND_DEFAULTPRINT(p, caplen);
174 ND_PRINT((ndo, "%s", tstr));
180 * c-style: whitesmith