1 /* 2 * Copyright (c) 2000 Ben Smithurst <ben@scientia.demon.co.uk> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 */ 21 22 #include <sys/cdefs.h> 23 #ifndef lint 24 #if 0 25 static const char rcsid[] _U_ = 26 "@(#) Header: /tcpdump/master/tcpdump/print-timed.c,v 1.9 2003-11-16 09:36:40 guy Exp"; 27 #else 28 __RCSID("$NetBSD: print-timed.c,v 1.2 2010/12/05 05:11:31 christos Exp $"); 29 #endif 30 #endif 31 32 #ifdef HAVE_CONFIG_H 33 #include "config.h" 34 #endif 35 36 #include <tcpdump-stdinc.h> 37 38 #include <stdio.h> 39 #include <string.h> 40 41 #include "timed.h" 42 #include "interface.h" 43 #include "extract.h" 44 45 static const char *tsptype[TSPTYPENUMBER] = 46 { "ANY", "ADJTIME", "ACK", "MASTERREQ", "MASTERACK", "SETTIME", "MASTERUP", 47 "SLAVEUP", "ELECTION", "ACCEPT", "REFUSE", "CONFLICT", "RESOLVE", "QUIT", 48 "DATE", "DATEREQ", "DATEACK", "TRACEON", "TRACEOFF", "MSITE", "MSITEREQ", 49 "TEST", "SETDATE", "SETDATEREQ", "LOOP" }; 50 51 void 52 timed_print(register const u_char *bp) 53 { 54 #define endof(x) ((u_char *)&(x) + sizeof (x)) 55 struct tsp *tsp = (struct tsp *)bp; 56 long sec, usec; 57 const u_char *end; 58 59 if (endof(tsp->tsp_type) > snapend) { 60 fputs("[|timed]", stdout); 61 return; 62 } 63 if (tsp->tsp_type < TSPTYPENUMBER) 64 printf("TSP_%s", tsptype[tsp->tsp_type]); 65 else 66 printf("(tsp_type %#x)", tsp->tsp_type); 67 68 if (endof(tsp->tsp_vers) > snapend) { 69 fputs(" [|timed]", stdout); 70 return; 71 } 72 printf(" vers %d", tsp->tsp_vers); 73 74 if (endof(tsp->tsp_seq) > snapend) { 75 fputs(" [|timed]", stdout); 76 return; 77 } 78 printf(" seq %d", tsp->tsp_seq); 79 80 if (tsp->tsp_type == TSP_LOOP) { 81 if (endof(tsp->tsp_hopcnt) > snapend) { 82 fputs(" [|timed]", stdout); 83 return; 84 } 85 printf(" hopcnt %d", tsp->tsp_hopcnt); 86 } else if (tsp->tsp_type == TSP_SETTIME || 87 tsp->tsp_type == TSP_ADJTIME || 88 tsp->tsp_type == TSP_SETDATE || 89 tsp->tsp_type == TSP_SETDATEREQ) { 90 if (endof(tsp->tsp_time) > snapend) { 91 fputs(" [|timed]", stdout); 92 return; 93 } 94 sec = EXTRACT_32BITS(&tsp->tsp_time.tv_sec); 95 usec = EXTRACT_32BITS(&tsp->tsp_time.tv_usec); 96 if (usec < 0) 97 /* corrupt, skip the rest of the packet */ 98 return; 99 fputs(" time ", stdout); 100 if (sec < 0 && usec != 0) { 101 sec++; 102 if (sec == 0) 103 fputc('-', stdout); 104 usec = 1000000 - usec; 105 } 106 printf("%ld.%06ld", sec, usec); 107 } 108 109 end = memchr(tsp->tsp_name, '\0', snapend - (u_char *)tsp->tsp_name); 110 if (end == NULL) 111 fputs(" [|timed]", stdout); 112 else { 113 fputs(" name ", stdout); 114 fwrite(tsp->tsp_name, end - (u_char *)tsp->tsp_name, 1, stdout); 115 } 116 } 117