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 #include <sys/cdefs.h> 19 #ifndef lint 20 __RCSID("$NetBSD: print-calm-fast.c,v 1.4 2023/08/17 20:19:40 christos Exp $"); 21 #endif 22 23 /* \summary: Communication access for land mobiles (CALM) printer */ 24 25 #ifdef HAVE_CONFIG_H 26 #include <config.h> 27 #endif 28 29 #include "netdissect-stdinc.h" 30 31 #define ND_LONGJMP_FROM_TCHECK 32 #include "netdissect.h" 33 #include "extract.h" 34 #include "addrtoname.h" 35 36 /* 37 ISO 29281:2009 38 Intelligent Transport Systems . Communications access for land mobiles (CALM) 39 CALM non-IP networking 40 */ 41 42 /* 43 * This is the top level routine of the printer. 'bp' points 44 * to the calm header of the packet. 45 */ 46 void 47 calm_fast_print(netdissect_options *ndo, const u_char *bp, u_int length, const struct lladdr_info *src) 48 { 49 ndo->ndo_protocol = "calm_fast"; 50 51 ND_PRINT("CALM FAST"); 52 if (src != NULL) 53 ND_PRINT(" src:%s", (src->addr_string)(ndo, src->addr)); 54 ND_PRINT("; "); 55 56 if (length < 2) { 57 ND_PRINT(" (length %u < 2)", length); 58 goto invalid; 59 } 60 61 ND_PRINT("SrcNwref:%u; ", GET_U_1(bp)); 62 length -= 1; 63 bp += 1; 64 65 ND_PRINT("DstNwref:%u; ", GET_U_1(bp)); 66 length -= 1; 67 bp += 1; 68 69 if (ndo->ndo_vflag) 70 ND_DEFAULTPRINT(bp, length); 71 return; 72 73 invalid: 74 nd_print_invalid(ndo); 75 ND_TCHECK_LEN(bp, length); 76 } 77