1/*
2 * Copyright (c) 2013 The TCPDUMP project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that: (1) source code
6 * distributions retain the above copyright notice and this paragraph
7 * in its entirety, and (2) distributions including binary code include
8 * the above copyright notice and this paragraph in its entirety in
9 * the documentation or other materials provided with the distribution.
10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
11 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
12 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
13 * FOR A PARTICULAR PURPOSE.
14 *
15 * Original code by Ola Martin Lykkja (ola.lykkja@q-free.com)
16 */
17
18/* \summary: Communication access for land mobiles (CALM) printer */
19
20#ifdef HAVE_CONFIG_H
21#include <config.h>
22#endif
23
24#include "netdissect-stdinc.h"
25
26#define ND_LONGJMP_FROM_TCHECK
27#include "netdissect.h"
28#include "extract.h"
29#include "addrtoname.h"
30
31/*
32   ISO 29281:2009
33   Intelligent Transport Systems . Communications access for land mobiles (CALM)
34   CALM non-IP networking
35*/
36
37/*
38 * This is the top level routine of the printer.  'bp' points
39 * to the calm header of the packet.
40 */
41void
42calm_fast_print(netdissect_options *ndo, const u_char *bp, u_int length, const struct lladdr_info *src)
43{
44	ndo->ndo_protocol = "calm_fast";
45
46	ND_PRINT("CALM FAST");
47	if (src != NULL)
48		ND_PRINT(" src:%s", (src->addr_string)(ndo, src->addr));
49	ND_PRINT("; ");
50
51	if (length < 2) {
52		ND_PRINT(" (length %u < 2)", length);
53		goto invalid;
54	}
55
56	ND_PRINT("SrcNwref:%u; ", GET_U_1(bp));
57	length -= 1;
58	bp += 1;
59
60	ND_PRINT("DstNwref:%u; ", GET_U_1(bp));
61	length -= 1;
62	bp += 1;
63
64	if (ndo->ndo_vflag)
65		ND_DEFAULTPRINT(bp, length);
66	return;
67
68invalid:
69	nd_print_invalid(ndo);
70	ND_TCHECK_LEN(bp, length);
71}
72