/*
* Copyright (c) 2013 The TCPDUMP project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code
* distributions retain the above copyright notice and this paragraph
* in its entirety, and (2) distributions including binary code include
* the above copyright notice and this paragraph in its entirety in
* the documentation or other materials provided with the distribution.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
* Original code by Ola Martin Lykkja ([email protected])
*/

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: print-calm-fast.c,v 1.5 2024/09/02 16:15:30 christos Exp $");
#endif

/* \summary: Communication access for land mobiles (CALM) printer */

#include <config.h>

#include "netdissect-stdinc.h"

#define ND_LONGJMP_FROM_TCHECK
#include "netdissect.h"
#include "extract.h"
#include "addrtoname.h"

/*
  ISO 29281:2009
  Intelligent Transport Systems . Communications access for land mobiles (CALM)
  CALM non-IP networking
*/

/*
* This is the top level routine of the printer.  'bp' points
* to the calm header of the packet.
*/
void
calm_fast_print(netdissect_options *ndo, const u_char *bp, u_int length, const struct lladdr_info *src)
{
       ndo->ndo_protocol = "calm_fast";

       ND_PRINT("CALM FAST");
       if (src != NULL)
               ND_PRINT(" src:%s", (src->addr_string)(ndo, src->addr));
       ND_PRINT("; ");

       if (length < 2) {
               ND_PRINT(" (length %u < 2)", length);
               goto invalid;
       }

       ND_PRINT("SrcNwref:%u; ", GET_U_1(bp));
       length -= 1;
       bp += 1;

       ND_PRINT("DstNwref:%u; ", GET_U_1(bp));
       length -= 1;
       bp += 1;

       if (ndo->ndo_vflag)
               ND_DEFAULTPRINT(bp, length);
       return;

invalid:
       nd_print_invalid(ndo);
       ND_TCHECK_LEN(bp, length);
}