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[] = 24 "@(#) $Header: /tcpdump/master/tcpdump/print-timed.c,v 1.1 2000/10/06 05:35:37 guy Exp $"; 25 #endif 26 27 #ifdef HAVE_CONFIG_H 28 #include "config.h" 29 #endif 30 31 #include <sys/param.h> 32 #include <sys/time.h> 33 34 #include <netinet/in.h> 35 #include "ip.h" 36 #include "udp.h" 37 #include "tcp.h" 38 39 #include "timed.h" 40 41 #include <stdio.h> 42 #include <string.h> 43 44 #include "interface.h" 45 #include "addrtoname.h" 46 #include "extract.h" /* must come after interface.h */ 47 48 static char *tsptype[TSPTYPENUMBER] = 49 { "ANY", "ADJTIME", "ACK", "MASTERREQ", "MASTERACK", "SETTIME", "MASTERUP", 50 "SLAVEUP", "ELECTION", "ACCEPT", "REFUSE", "CONFLICT", "RESOLVE", "QUIT", 51 "DATE", "DATEREQ", "DATEACK", "TRACEON", "TRACEOFF", "MSITE", "MSITEREQ", 52 "TEST", "SETDATE", "SETDATEREQ", "LOOP" }; 53 54 void 55 timed_print(register const u_char *bp, u_int length) 56 { 57 #define endof(x) ((u_char *)&(x) + sizeof (x)) 58 struct tsp *tsp = (struct tsp *)bp; 59 long sec, usec; 60 const u_char *end; 61 62 if (endof(tsp->tsp_type) > snapend) { 63 fputs("[|timed]", stdout); 64 return; 65 } 66 if (tsp->tsp_type < TSPTYPENUMBER) 67 printf("TSP_%s", tsptype[tsp->tsp_type]); 68 else 69 printf("(tsp_type %#x)", tsp->tsp_type); 70 71 if (endof(tsp->tsp_vers) > snapend) { 72 fputs(" [|timed]", stdout); 73 return; 74 } 75 printf(" vers %d", tsp->tsp_vers); 76 77 if (endof(tsp->tsp_seq) > snapend) { 78 fputs(" [|timed]", stdout); 79 return; 80 } 81 printf(" seq %d", tsp->tsp_seq); 82 83 if (tsp->tsp_type == TSP_LOOP) { 84 if (endof(tsp->tsp_hopcnt) > snapend) { 85 fputs(" [|timed]", stdout); 86 return; 87 } 88 printf(" hopcnt %d", tsp->tsp_hopcnt); 89 } else if (tsp->tsp_type == TSP_SETTIME || 90 tsp->tsp_type == TSP_ADJTIME || 91 tsp->tsp_type == TSP_SETDATE || 92 tsp->tsp_type == TSP_SETDATEREQ) { 93 if (endof(tsp->tsp_time) > snapend) { 94 fputs(" [|timed]", stdout); 95 return; 96 } 97 sec = ntohl((long)tsp->tsp_time.tv_sec); 98 usec = ntohl((long)tsp->tsp_time.tv_usec); 99 if (usec < 0) 100 /* corrupt, skip the rest of the packet */ 101 return; 102 fputs(" time ", stdout); 103 if (sec < 0 && usec != 0) { 104 sec++; 105 if (sec == 0) 106 fputc('-', stdout); 107 usec = 1000000 - usec; 108 } 109 printf("%ld.%06ld", sec, usec); 110 } 111 112 end = memchr(tsp->tsp_name, '\0', snapend - (u_char *)tsp->tsp_name); 113 if (end == NULL) 114 fputs(" [|timed]", stdout); 115 else { 116 fputs(" name ", stdout); 117 fwrite(tsp->tsp_name, end - (u_char *)tsp->tsp_name, 1, stdout); 118 } 119 } 120