1 /* $OpenBSD: print-timed.c,v 1.1 2000/12/07 22:52:00 mickey Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Ben Smithurst <ben@scientia.demon.co.uk> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that: (1) source code distributions 9 * retain the above copyright notice and this paragraph in its entirety, (2) 10 * distributions including binary code include the above copyright notice and 11 * this paragraph in its entirety in the documentation or other materials 12 * provided with the distribution, and (3) all advertising materials mentioning 13 * features or use of this software display the following acknowledgement: 14 * ``This product includes software developed by the University of California, 15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 16 * the University nor the names of its contributors may be used to endorse 17 * or promote products derived from this software without specific prior 18 * written permission. 19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 22 * 23 * from tcpdump.org: 24 * Header: /tcpdump/master/tcpdump/print-timed.c,v 1.1 2000/10/06 05:35:37 guy Exp 25 * 26 */ 27 28 #ifndef lint 29 static const char rcsid[] = 30 "@(#) $Header: /home/cvs/src/usr.sbin/tcpdump/print-timed.c,v 1.1 2000/12/07 22:52:00 mickey Exp $"; 31 #endif 32 33 #ifdef HAVE_CONFIG_H 34 #include "config.h" 35 #endif 36 37 #include <sys/param.h> 38 #include <sys/time.h> 39 40 #include <netinet/in.h> 41 42 #include <protocols/timed.h> 43 44 #include <stdio.h> 45 #include <string.h> 46 47 #include "interface.h" 48 #include "addrtoname.h" 49 #include "extract.h" /* must come after interface.h */ 50 51 static char *tsptype[TSPTYPENUMBER] = 52 { "ANY", "ADJTIME", "ACK", "MASTERREQ", "MASTERACK", "SETTIME", "MASTERUP", 53 "SLAVEUP", "ELECTION", "ACCEPT", "REFUSE", "CONFLICT", "RESOLVE", "QUIT", 54 "DATE", "DATEREQ", "DATEACK", "TRACEON", "TRACEOFF", "MSITE", "MSITEREQ", 55 "TEST", "SETDATE", "SETDATEREQ", "LOOP" }; 56 57 void 58 timed_print(register const u_char *bp, u_int length) 59 { 60 #define endof(x) ((u_char *)&(x) + sizeof (x)) 61 struct tsp *tsp = (struct tsp *)bp; 62 long sec, usec; 63 const u_char *end; 64 65 if (endof(tsp->tsp_type) > snapend) { 66 fputs("[|timed]", stdout); 67 return; 68 } 69 if (tsp->tsp_type < TSPTYPENUMBER) 70 printf("%s", tsptype[tsp->tsp_type]); 71 else 72 printf("(tsp_type %#x)", tsp->tsp_type); 73 74 if (endof(tsp->tsp_vers) > snapend) { 75 fputs(" [|timed]", stdout); 76 return; 77 } 78 printf(" vers %d", tsp->tsp_vers); 79 80 if (endof(tsp->tsp_seq) > snapend) { 81 fputs(" [|timed]", stdout); 82 return; 83 } 84 printf(" seq %d", tsp->tsp_seq); 85 86 if (tsp->tsp_type == TSP_LOOP) { 87 if (endof(tsp->tsp_hopcnt) > snapend) { 88 fputs(" [|timed]", stdout); 89 return; 90 } 91 printf(" hopcnt %d", tsp->tsp_hopcnt); 92 } else if (tsp->tsp_type == TSP_SETTIME || 93 tsp->tsp_type == TSP_ADJTIME || 94 tsp->tsp_type == TSP_SETDATE || 95 tsp->tsp_type == TSP_SETDATEREQ) { 96 if (endof(tsp->tsp_time) > snapend) { 97 fputs(" [|timed]", stdout); 98 return; 99 } 100 sec = ntohl((long)tsp->tsp_time.tv_sec); 101 usec = ntohl((long)tsp->tsp_time.tv_usec); 102 if (usec < 0) 103 /* corrupt, skip the rest of the packet */ 104 return; 105 fputs(" time ", stdout); 106 if (sec < 0 && usec != 0) { 107 sec++; 108 if (sec == 0) 109 fputc('-', stdout); 110 usec = 1000000 - usec; 111 } 112 printf("%ld.%06ld", sec, usec); 113 } 114 115 end = memchr(tsp->tsp_name, '\0', snapend - (u_char *)tsp->tsp_name); 116 if (end == NULL) 117 fputs(" [|timed]", stdout); 118 else { 119 fputs(" name ", stdout); 120 fwrite(tsp->tsp_name, end - (u_char *)tsp->tsp_name, 1, stdout); 121 } 122 } 123