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 1.5 2024/09/02 16:15:30 christos Exp $"); 21 #endif 22 23 /* \summary: Communication access for land mobiles (CALM) printer */ 24 25 #include <config.h> 26 27 #include "netdissect-stdinc.h" 28 29 #define ND_LONGJMP_FROM_TCHECK 30 #include "netdissect.h" 31 #include "extract.h" 32 #include "addrtoname.h" 33 34 /* 35 ISO 29281:2009 36 Intelligent Transport Systems . Communications access for land mobiles (CALM) 37 CALM non-IP networking 38 */ 39 40 /* 41 * This is the top level routine of the printer. 'bp' points 42 * to the calm header of the packet. 43 */ 44 void 45 calm_fast_print(netdissect_options *ndo, const u_char *bp, u_int length, const struct lladdr_info *src) 46 { 47 ndo->ndo_protocol = "calm_fast"; 48 49 ND_PRINT("CALM FAST"); 50 if (src != NULL) 51 ND_PRINT(" src:%s", (src->addr_string)(ndo, src->addr)); 52 ND_PRINT("; "); 53 54 if (length < 2) { 55 ND_PRINT(" (length %u < 2)", length); 56 goto invalid; 57 } 58 59 ND_PRINT("SrcNwref:%u; ", GET_U_1(bp)); 60 length -= 1; 61 bp += 1; 62 63 ND_PRINT("DstNwref:%u; ", GET_U_1(bp)); 64 length -= 1; 65 bp += 1; 66 67 if (ndo->ndo_vflag) 68 ND_DEFAULTPRINT(bp, length); 69 return; 70 71 invalid: 72 nd_print_invalid(ndo); 73 ND_TCHECK_LEN(bp, length); 74 } 75