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 /* \summary: *BSD/Darwin packet filter log file printer */
28 #include "netdissect-stdinc.h"
30 #include "netdissect.h"
36 static const struct tok pf_reasons[] = {
37 { PFRES_MATCH, "0(match)" },
38 { PFRES_BADOFF, "1(bad-offset)" },
39 { PFRES_FRAG, "2(fragment)" },
40 { PFRES_NORM, "3(short)" },
41 { PFRES_NORM, "4(normalize)" },
42 { PFRES_MEMORY, "5(memory)" },
43 { PFRES_TS, "6(bad-timestamp)" },
44 { PFRES_CONGEST, "7(congestion)" },
45 { PFRES_IPOPTIONS, "8(ip-option)" },
46 { PFRES_PROTCKSUM, "9(proto-cksum)" },
47 { PFRES_BADSTATE, "10(state-mismatch)" },
48 { PFRES_STATEINS, "11(state-insert)" },
49 { PFRES_MAXSTATES, "12(state-limit)" },
50 { PFRES_SRCLIMIT, "13(src-limit)" },
51 { PFRES_SYNPROXY, "14(synproxy)" },
52 #if defined(__FreeBSD__)
53 { PFRES_MAPFAILED, "15(map-failed)" },
54 #elif defined(__NetBSD__)
55 { PFRES_STATELOCKED, "15(state-locked)" },
56 #elif defined(__OpenBSD__)
57 { PFRES_TRANSLATE, "15(translate)" },
58 { PFRES_NOROUTE, "16(no-route)" },
59 #elif defined(__APPLE__)
60 { PFRES_DUMMYNET, "15(dummynet)" },
65 static const struct tok pf_actions[] = {
68 { PF_SCRUB, "scrub" },
69 { PF_NOSCRUB, "scrub" },
71 { PF_NONAT, "nonat" },
72 { PF_BINAT, "binat" },
73 { PF_NOBINAT, "nobinat" },
75 { PF_NORDR, "nordr" },
76 { PF_SYNPROXY_DROP, "synproxy-drop" },
77 #if defined(__FreeBSD__)
78 { PF_DEFER, "defer" },
79 { PF_MATCH, "match" },
80 #elif defined(__OpenBSD__)
81 { PF_DEFER, "defer" },
82 { PF_MATCH, "match" },
83 { PF_DIVERT, "divert" },
86 #elif defined(__APPLE__)
87 { PF_DUMMYNET, "dummynet" },
88 { PF_NODUMMYNET, "nodummynet" },
89 { PF_NAT64, "nat64" },
90 { PF_NONAT64, "nonat64" },
95 static const struct tok pf_directions[] = {
96 { PF_INOUT, "in/out" },
99 #if defined(__OpenBSD__)
106 pflog_print(netdissect_options *ndo, const struct pfloghdr *hdr)
108 uint32_t rulenr, subrulenr, ridentifier;
110 ndo->ndo_protocol = "pflog";
111 rulenr = GET_BE_U_4(&hdr->rulenr);
112 subrulenr = GET_BE_U_4(&hdr->subrulenr);
113 ridentifier = GET_BE_U_4(&hdr->ridentifier);
114 if (subrulenr == (uint32_t)-1)
115 ND_PRINT("rule %u/", rulenr);
117 ND_PRINT("rule %u.", rulenr);
118 nd_printjnp(ndo, (const u_char*)hdr->ruleset, PFLOG_RULESET_NAME_SIZE);
119 ND_PRINT(".%u/", subrulenr);
122 ND_PRINT("%s", tok2str(pf_reasons, "unkn(%u)", hdr->reason));
124 if (hdr->uid != UID_MAX)
125 ND_PRINT(" [uid %u]", (unsigned)hdr->uid);
127 if (ridentifier != 0)
128 ND_PRINT(" [ridentifier %u]", ridentifier);
130 ND_PRINT(": %s %s on ",
131 tok2str(pf_actions, "unkn(%u)", GET_U_1(&hdr->action)),
132 tok2str(pf_directions, "unkn(%u)", GET_U_1(&hdr->dir)));
133 nd_printjnp(ndo, (const u_char*)hdr->ifname, PFLOG_IFNAMSIZ);
138 pflog_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h,
141 u_int length = h->len;
143 u_int caplen = h->caplen;
144 const struct pfloghdr *hdr;
147 ndo->ndo_protocol = "pflog";
149 if (caplen < sizeof(uint8_t)) {
151 ndo->ndo_ll_hdr_len += h->caplen;
155 #define MIN_PFLOG_HDRLEN 45
156 hdr = (const struct pfloghdr *)p;
157 if (GET_U_1(&hdr->length) < MIN_PFLOG_HDRLEN) {
158 ND_PRINT("[pflog: invalid header length!]");
159 ndo->ndo_ll_hdr_len += GET_U_1(&hdr->length); /* XXX: not really */
162 hdrlen = roundup2(hdr->length, 4);
164 if (caplen < hdrlen) {
166 ndo->ndo_ll_hdr_len += hdrlen; /* XXX: true? */
170 /* print what we know */
173 pflog_print(ndo, hdr);
175 /* skip to the real packet */
176 af = GET_U_1(&hdr->af);
183 * If there's a system that doesn't use the AF_INET
184 * from 4.2BSD, feel free to add its value to af.h
187 * Hopefully, there isn't.
190 ip_print(ndo, p, length);
194 * Try all AF_INET6 values for all systems with pflog,
197 case BSD_AFNUM_INET6_BSD:
198 case BSD_AFNUM_INET6_FREEBSD:
199 case BSD_AFNUM_INET6_DARWIN:
200 ip6_print(ndo, p, length);
204 /* address family not handled, print raw packet */
206 pflog_print(ndo, hdr);
207 if (!ndo->ndo_suppress_default_print)
208 ND_DEFAULTPRINT(p, caplen);
211 ndo->ndo_ll_hdr_len += hdrlen;
215 ndo->ndo_ll_hdr_len += hdrlen;