Our pf includes are in /usr/include/net/pf/, so adjust the appropriate
[dragonfly.git] / contrib / tcpdump-3.9 / print-pflog.c
1 /*
2  * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996
3  *      The Regents of the University of California.  All rights reserved.
4  *
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
16  * written permission.
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.
20  */
21
22 #ifndef lint
23 static const char rcsid[] _U_ =
24     "@(#) $Header: /tcpdump/master/tcpdump/print-pflog.c,v 1.13.2.2 2006/10/25 22:13:30 guy Exp $ (LBL)";
25 #endif
26
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include <tcpdump-stdinc.h>
32
33 #include <stdio.h>
34 #include <pcap.h>
35
36 #include "interface.h"
37 #include "addrtoname.h"
38 #include "pf.h"
39
40 static struct tok pf_reasons[] = {
41         { 0,    "0(match)" },
42         { 1,    "1(bad-offset)" },
43         { 2,    "2(fragment)" },
44         { 3,    "3(short)" },
45         { 4,    "4(normalize)" },
46         { 5,    "5(memory)" },
47         { 6,    "6(bad-timestamp)" },
48         { 7,    "7(congestion)" },
49         { 8,    "8(ip-option)" },
50         { 9,    "9(proto-cksum)" },
51         { 10,   "10(state-mismatch)" },
52         { 11,   "11(state-insert)" },
53         { 12,   "12(state-limit)" },
54         { 13,   "13(src-limit)" },
55         { 14,   "14(synproxy)" },
56         { 0,    NULL }
57 };
58
59 static struct tok pf_actions[] = {
60         { PF_PASS,              "pass" },
61         { PF_DROP,              "block" },
62         { PF_SCRUB,             "scrub" },
63         { PF_NAT,               "nat" },
64         { PF_NONAT,             "nat" },
65         { PF_BINAT,             "binat" },
66         { PF_NOBINAT,           "binat" },
67         { PF_RDR,               "rdr" },
68         { PF_NORDR,             "rdr" },
69         { PF_SYNPROXY_DROP,     "synproxy-drop" },
70         { 0,                    NULL }
71 };
72
73 static struct tok pf_directions[] = {
74         { PF_INOUT,     "in/out" },
75         { PF_IN,        "in" },
76         { PF_OUT,       "out" },
77         { 0,            NULL }
78 };
79
80 /* For reading capture files on other systems */
81 #define OPENBSD_AF_INET         2
82 #define OPENBSD_AF_INET6        24
83
84 static void
85 pflog_print(const struct pfloghdr *hdr)
86 {
87         u_int32_t rulenr, subrulenr;
88
89         rulenr = ntohl(hdr->rulenr);
90         subrulenr = ntohl(hdr->subrulenr);
91         if (subrulenr == (u_int32_t)-1)
92                 printf("rule %u/", rulenr);
93         else
94                 printf("rule %u.%s.%u/", rulenr, hdr->ruleset, subrulenr);
95
96         printf("%s: %s %s on %s: ",
97             tok2str(pf_reasons, "unkn(%u)", hdr->reason),
98             tok2str(pf_actions, "unkn(%u)", hdr->action),
99             tok2str(pf_directions, "unkn(%u)", hdr->dir),
100             hdr->ifname);
101 }
102
103 u_int
104 pflog_if_print(const struct pcap_pkthdr *h, register const u_char *p)
105 {
106         u_int length = h->len;
107         u_int hdrlen;
108         u_int caplen = h->caplen;
109         const struct pfloghdr *hdr;
110         u_int8_t af;
111
112         /* check length */
113         if (caplen < sizeof(u_int8_t)) {
114                 printf("[|pflog]");
115                 return (caplen);
116         }
117
118 #define MIN_PFLOG_HDRLEN        45
119         hdr = (struct pfloghdr *)p;
120         if (hdr->length < MIN_PFLOG_HDRLEN) {
121                 printf("[pflog: invalid header length!]");
122                 return (hdr->length);   /* XXX: not really */
123         }
124         hdrlen = BPF_WORDALIGN(hdr->length);
125
126         if (caplen < hdrlen) {
127                 printf("[|pflog]");
128                 return (hdrlen);        /* XXX: true? */
129         }
130
131         /* print what we know */
132         hdr = (struct pfloghdr *)p;
133         TCHECK(*hdr);
134         if (eflag)
135                 pflog_print(hdr);
136         
137         /* skip to the real packet */
138         af = hdr->af;
139         length -= hdrlen;
140         caplen -= hdrlen;
141         p += hdrlen;
142         switch (af) {
143
144                 case AF_INET:
145 #if OPENBSD_AF_INET != AF_INET
146                 case OPENBSD_AF_INET:           /* XXX: read pcap files */
147 #endif
148                         ip_print(gndo, p, length);
149                         break;
150
151 #ifdef INET6
152                 case AF_INET6:
153 #if OPENBSD_AF_INET6 != AF_INET6
154                 case OPENBSD_AF_INET6:          /* XXX: read pcap files */
155 #endif
156                         ip6_print(p, length);
157                         break;
158 #endif
159
160         default:
161                 /* address family not handled, print raw packet */
162                 if (!eflag)
163                         pflog_print(hdr);
164                 if (!suppress_default_print)
165                         default_print(p, caplen);
166         }
167         
168         return (hdrlen);
169 trunc:
170         printf("[|pflog]");
171         return (hdrlen);
172 }
173
174 /*
175  * Local Variables:
176  * c-style: whitesmith
177  * c-basic-offset: 8
178  * End:
179  */