diff options
Diffstat (limited to 'print-timed.c')
| -rw-r--r-- | print-timed.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/print-timed.c b/print-timed.c new file mode 100644 index 000000000000..6aa7a821eb7e --- /dev/null +++ b/print-timed.c @@ -0,0 +1,150 @@ +/* + * Copyright (c) 2000 Ben Smithurst <ben@scientia.demon.co.uk> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +/* \summary: BSD time daemon protocol printer */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <netdissect-stdinc.h> + +#include "netdissect.h" +#include "extract.h" + +/* + * Time Synchronization Protocol + * + * http://docs.freebsd.org/44doc/smm/12.timed/paper.pdf + */ + +struct tsp_timeval { + uint32_t tv_sec; + uint32_t tv_usec; +}; + +struct tsp { + uint8_t tsp_type; + uint8_t tsp_vers; + uint16_t tsp_seq; + union { + struct tsp_timeval tspu_time; + int8_t tspu_hopcnt; + } tsp_u; + int8_t tsp_name[256]; +}; + +#define tsp_time tsp_u.tspu_time +#define tsp_hopcnt tsp_u.tspu_hopcnt + +/* + * Command types. + */ +#define TSP_ANY 0 /* match any types */ +#define TSP_ADJTIME 1 /* send adjtime */ +#define TSP_ACK 2 /* generic acknowledgement */ +#define TSP_MASTERREQ 3 /* ask for master's name */ +#define TSP_MASTERACK 4 /* acknowledge master request */ +#define TSP_SETTIME 5 /* send network time */ +#define TSP_MASTERUP 6 /* inform slaves that master is up */ +#define TSP_SLAVEUP 7 /* slave is up but not polled */ +#define TSP_ELECTION 8 /* advance candidature for master */ +#define TSP_ACCEPT 9 /* support candidature of master */ +#define TSP_REFUSE 10 /* reject candidature of master */ +#define TSP_CONFLICT 11 /* two or more masters present */ +#define TSP_RESOLVE 12 /* masters' conflict resolution */ +#define TSP_QUIT 13 /* reject candidature if master is up */ +#define TSP_DATE 14 /* reset the time (date command) */ +#define TSP_DATEREQ 15 /* remote request to reset the time */ +#define TSP_DATEACK 16 /* acknowledge time setting */ +#define TSP_TRACEON 17 /* turn tracing on */ +#define TSP_TRACEOFF 18 /* turn tracing off */ +#define TSP_MSITE 19 /* find out master's site */ +#define TSP_MSITEREQ 20 /* remote master's site request */ +#define TSP_TEST 21 /* for testing election algo */ +#define TSP_SETDATE 22 /* New from date command */ +#define TSP_SETDATEREQ 23 /* New remote for above */ +#define TSP_LOOP 24 /* loop detection packet */ + +#define TSPTYPENUMBER 25 + +static const char tstr[] = "[|timed]"; + +static const char *tsptype[TSPTYPENUMBER] = + { "ANY", "ADJTIME", "ACK", "MASTERREQ", "MASTERACK", "SETTIME", "MASTERUP", + "SLAVEUP", "ELECTION", "ACCEPT", "REFUSE", "CONFLICT", "RESOLVE", "QUIT", + "DATE", "DATEREQ", "DATEACK", "TRACEON", "TRACEOFF", "MSITE", "MSITEREQ", + "TEST", "SETDATE", "SETDATEREQ", "LOOP" }; + +void +timed_print(netdissect_options *ndo, + register const u_char *bp) +{ + const struct tsp *tsp = (const struct tsp *)bp; + long sec, usec; + + ND_TCHECK(tsp->tsp_type); + if (tsp->tsp_type < TSPTYPENUMBER) + ND_PRINT((ndo, "TSP_%s", tsptype[tsp->tsp_type])); + else + ND_PRINT((ndo, "(tsp_type %#x)", tsp->tsp_type)); + + ND_TCHECK(tsp->tsp_vers); + ND_PRINT((ndo, " vers %u", tsp->tsp_vers)); + + ND_TCHECK(tsp->tsp_seq); + ND_PRINT((ndo, " seq %u", tsp->tsp_seq)); + + switch (tsp->tsp_type) { + case TSP_LOOP: + ND_TCHECK(tsp->tsp_hopcnt); + ND_PRINT((ndo, " hopcnt %u", tsp->tsp_hopcnt)); + break; + case TSP_SETTIME: + case TSP_ADJTIME: + case TSP_SETDATE: + case TSP_SETDATEREQ: + ND_TCHECK(tsp->tsp_time); + sec = EXTRACT_32BITS(&tsp->tsp_time.tv_sec); + usec = EXTRACT_32BITS(&tsp->tsp_time.tv_usec); + /* XXX The comparison below is always false? */ + if (usec < 0) + /* invalid, skip the rest of the packet */ + return; + ND_PRINT((ndo, " time ")); + if (sec < 0 && usec != 0) { + sec++; + if (sec == 0) + ND_PRINT((ndo, "-")); + usec = 1000000 - usec; + } + ND_PRINT((ndo, "%ld.%06ld", sec, usec)); + break; + } + ND_TCHECK(tsp->tsp_name); + ND_PRINT((ndo, " name ")); + if (fn_print(ndo, (const u_char *)tsp->tsp_name, (const u_char *)tsp->tsp_name + sizeof(tsp->tsp_name))) + goto trunc; + return; + +trunc: + ND_PRINT((ndo, " %s", tstr)); +} |