xref: /freebsd/contrib/tcpdump/print-enc.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
1 /*	$OpenBSD: print-enc.c,v 1.7 2002/02/19 19:39:40 millert Exp $	*/
2 
3 /*
4  * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that: (1) source code distributions
9  * retain the above copyright notice and this paragraph in its entirety, (2)
10  * distributions including binary code include the above copyright notice and
11  * this paragraph in its entirety in the documentation or other materials
12  * provided with the distribution, and (3) all advertising materials mentioning
13  * features or use of this software display the following acknowledgement:
14  * ``This product includes software developed by the University of California,
15  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
16  * the University nor the names of its contributors may be used to endorse
17  * or promote products derived from this software without specific prior
18  * written permission.
19  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
20  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
21  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22  */
23 
24 #ifndef lint
25 static const char rcsid[] _U_ =
26     "@(#) $Header: /tcpdump/master/tcpdump/print-enc.c,v 1.4 2005/04/06 21:32:39 mcr Exp $ (LBL)";
27 #endif
28 
29 #ifdef HAVE_CONFIG_H
30 #include "config.h"
31 #endif
32 
33 #include <tcpdump-stdinc.h>
34 
35 #include <pcap.h>
36 
37 #include "interface.h"
38 #include "addrtoname.h"
39 
40 #include "enc.h"
41 
42 #define ENC_PRINT_TYPE(wh, xf, nam) \
43 	if ((wh) & (xf)) { \
44 		printf("%s%s", nam, (wh) == (xf) ? "): " : ","); \
45 		(wh) &= ~(xf); \
46 	}
47 
48 u_int
49 enc_if_print(const struct pcap_pkthdr *h, register const u_char *p)
50 {
51 	register u_int length = h->len;
52 	register u_int caplen = h->caplen;
53 	int flags;
54 	const struct enchdr *hdr;
55 
56 	if (caplen < ENC_HDRLEN) {
57 		printf("[|enc]");
58 		goto out;
59 	}
60 
61 	hdr = (struct enchdr *)p;
62 	flags = hdr->flags;
63 	if (flags == 0)
64 		printf("(unprotected): ");
65 	else
66 		printf("(");
67 	ENC_PRINT_TYPE(flags, M_AUTH, "authentic");
68 	ENC_PRINT_TYPE(flags, M_CONF, "confidential");
69 	/* ENC_PRINT_TYPE(flags, M_TUNNEL, "tunnel"); */
70 	printf("SPI 0x%08x: ", (u_int32_t)ntohl(hdr->spi));
71 
72 	length -= ENC_HDRLEN;
73 	/* XXX - use the address family */
74 	ip_print(gndo, p + ENC_HDRLEN, length);
75 
76 out:
77 	return (ENC_HDRLEN);
78 }
79 
80 
81 /*
82  * Local Variables:
83  * c-style: whitesmith
84  * c-basic-offset: 8
85  * End:
86  */
87