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 #ifndef lint 23 static const char rcsid[] _U_ = 24 "@(#) $Header: /tcpdump/master/tcpdump/print-timed.c,v 1.7.2.2 2003/11/16 08:51:51 guy Exp $"; 25 #endif 26 27 #ifdef HAVE_CONFIG_H 28 #include "config.h" 29 #endif 30 31 #include <tcpdump-stdinc.h> 32 33 #include <stdio.h> 34 #include <string.h> 35 36 #include "timed.h" 37 #include "interface.h" 38 #include "extract.h" 39 40 static const char *tsptype[TSPTYPENUMBER] = 41 { "ANY", "ADJTIME", "ACK", "MASTERREQ", "MASTERACK", "SETTIME", "MASTERUP", 42 "SLAVEUP", "ELECTION", "ACCEPT", "REFUSE", "CONFLICT", "RESOLVE", "QUIT", 43 "DATE", "DATEREQ", "DATEACK", "TRACEON", "TRACEOFF", "MSITE", "MSITEREQ", 44 "TEST", "SETDATE", "SETDATEREQ", "LOOP" }; 45 46 void 47 timed_print(register const u_char *bp) 48 { 49 #define endof(x) ((u_char *)&(x) + sizeof (x)) 50 struct tsp *tsp = (struct tsp *)bp; 51 long sec, usec; 52 const u_char *end; 53 54 if (endof(tsp->tsp_type) > snapend) { 55 fputs("[|timed]", stdout); 56 return; 57 } 58 if (tsp->tsp_type < TSPTYPENUMBER) 59 printf("TSP_%s", tsptype[tsp->tsp_type]); 60 else 61 printf("(tsp_type %#x)", tsp->tsp_type); 62 63 if (endof(tsp->tsp_vers) > snapend) { 64 fputs(" [|timed]", stdout); 65 return; 66 } 67 printf(" vers %d", tsp->tsp_vers); 68 69 if (endof(tsp->tsp_seq) > snapend) { 70 fputs(" [|timed]", stdout); 71 return; 72 } 73 printf(" seq %d", tsp->tsp_seq); 74 75 if (tsp->tsp_type == TSP_LOOP) { 76 if (endof(tsp->tsp_hopcnt) > snapend) { 77 fputs(" [|timed]", stdout); 78 return; 79 } 80 printf(" hopcnt %d", tsp->tsp_hopcnt); 81 } else if (tsp->tsp_type == TSP_SETTIME || 82 tsp->tsp_type == TSP_ADJTIME || 83 tsp->tsp_type == TSP_SETDATE || 84 tsp->tsp_type == TSP_SETDATEREQ) { 85 if (endof(tsp->tsp_time) > snapend) { 86 fputs(" [|timed]", stdout); 87 return; 88 } 89 sec = EXTRACT_32BITS(&tsp->tsp_time.tv_sec); 90 usec = EXTRACT_32BITS(&tsp->tsp_time.tv_usec); 91 if (usec < 0) 92 /* corrupt, skip the rest of the packet */ 93 return; 94 fputs(" time ", stdout); 95 if (sec < 0 && usec != 0) { 96 sec++; 97 if (sec == 0) 98 fputc('-', stdout); 99 usec = 1000000 - usec; 100 } 101 printf("%ld.%06ld", sec, usec); 102 } 103 104 end = memchr(tsp->tsp_name, '\0', snapend - (u_char *)tsp->tsp_name); 105 if (end == NULL) 106 fputs(" [|timed]", stdout); 107 else { 108 fputs(" name ", stdout); 109 fwrite(tsp->tsp_name, end - (u_char *)tsp->tsp_name, 1, stdout); 110 } 111 } 112