/* packet-quake.c * Routines for Time Synchronization Protocol (TSP) packet dissection * * Uwe Girlich * * $Id: packet-tsp.c,v 1.3 2002/08/28 21:00:36 jmayer Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * Copied from packet-quake.c * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include /* * For a full documentation of the Time Synchronization Protocol (TSP) see: * http://docs.freebsd.org/44doc/smm/12.timed/paper.pdf */ static int proto_tsp = -1; static int hf_tsp_type = -1; static int hf_tsp_vers = -1; static int hf_tsp_seq = -1; static int hf_tsp_hopcnt = -1; static int hf_tsp_time_sec = -1; static int hf_tsp_time_usec = -1; static int hf_tsp_name = -1; static gint ett_tsp = -1; static dissector_handle_t tsp_handle; /* timed port from /etc/services */ #define UDP_PORT_TIMED 525 static const value_string names_tsp_type[] = { #define TSP_ANY 0 /* match any types */ { TSP_ANY, "any" }, #define TSP_ADJTIME 1 /* send adjtime */ { TSP_ADJTIME, "adjtime" }, #define TSP_ACK 2 /* generic acknowledgement */ { TSP_ACK, "ack" }, #define TSP_MASTERREQ 3 /* ask for master's name */ { TSP_MASTERREQ, "masterreq" }, #define TSP_MASTERACK 4 /* acknowledge master request */ { TSP_MASTERACK, "masterack" }, #define TSP_SETTIME 5 /* send network time */ { TSP_SETTIME, "settime" }, #define TSP_MASTERUP 6 /* inform slaves that master is up */ { TSP_MASTERUP, "masterup" }, #define TSP_SLAVEUP 7 /* slave is up but not polled */ { TSP_SLAVEUP, "slaveup" }, #define TSP_ELECTION 8 /* advance candidature for master */ { TSP_ELECTION, "election" }, #define TSP_ACCEPT 9 /* support candidature of master */ { TSP_ACCEPT, "accept" }, #define TSP_REFUSE 10 /* reject candidature of master */ { TSP_REFUSE, "refuse" }, #define TSP_CONFLICT 11 /* two or more masters present */ { TSP_CONFLICT, "conflict" }, #define TSP_RESOLVE 12 /* masters' conflict resolution */ { TSP_RESOLVE, "resolve" }, #define TSP_QUIT 13 /* reject candidature if master is up */ { TSP_QUIT, "quit" }, #define TSP_DATE 14 /* reset the time (date command) */ { TSP_DATE, "date" }, #define TSP_DATEREQ 15 /* remote request to reset the time */ { TSP_DATEREQ, "datereq" }, #define TSP_DATEACK 16 /* acknowledge time setting */ { TSP_DATEACK, "dateack" }, #define TSP_TRACEON 17 /* turn tracing on */ { TSP_TRACEON, "traceon" }, #define TSP_TRACEOFF 18 /* turn tracing off */ { TSP_TRACEOFF, "traceoff" }, #define TSP_MSITE 19 /* find out master's site */ { TSP_MSITE, "msite" }, #define TSP_MSITEREQ 20 /* remote master's site request */ { TSP_MSITEREQ, "msitereq" }, #define TSP_TEST 21 /* for testing election algo */ { TSP_TEST, "test" }, #define TSP_SETDATE 22 /* New from date command */ { TSP_SETDATE, "setdate" }, #define TSP_SETDATEREQ 23 /* New remote for above */ { TSP_SETDATEREQ, "setdatereq" }, #define TSP_LOOP 24 /* loop detection packet */ { TSP_LOOP, "loop" }, { 0, NULL } }; static void dissect_tsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_tree *tsp_tree = NULL; proto_item *tsp_item = NULL; guint8 tsp_type; guint8 tsp_vers; guint16 tsp_seq; guint32 tsp_time_sec; guint32 tsp_time_usec; guint8 tsp_hopcnt; gint tsp_name_length; guint8 tsp_name[256]; if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "TSP"); if (check_col(pinfo->cinfo, COL_INFO)) col_clear(pinfo->cinfo, COL_INFO); tsp_type = tvb_get_guint8(tvb, 0); tsp_vers = tvb_get_guint8(tvb, 1); tsp_seq = tvb_get_ntohs(tvb, 2); if (tree) { tsp_item = proto_tree_add_item(tree, proto_tsp, tvb, 0, -1, FALSE); if (tsp_item) tsp_tree = proto_item_add_subtree(tsp_item, ett_tsp); } if (tsp_tree) { proto_tree_add_uint(tsp_tree, hf_tsp_type, tvb, 0, 1, tsp_type); proto_tree_add_uint(tsp_tree, hf_tsp_vers, tvb, 1, 1, tsp_vers); proto_tree_add_uint(tsp_tree, hf_tsp_seq, tvb, 2, 2, tsp_seq); } if (tsp_type == TSP_LOOP) { tsp_hopcnt = tvb_get_guint8(tvb, 4); if (tsp_tree) proto_tree_add_uint(tsp_tree, hf_tsp_hopcnt, tvb, 4, 1, tsp_type); } if (tsp_type == TSP_SETTIME || tsp_type == TSP_ADJTIME || tsp_type == TSP_SETDATE || tsp_type == TSP_SETDATEREQ) { tsp_time_sec = tvb_get_ntohl(tvb, 4); if (tsp_tree) proto_tree_add_uint(tsp_tree, hf_tsp_time_sec, tvb, 4, 4, tsp_time_sec); tsp_time_usec = tvb_get_ntohl(tvb, 8); if (tsp_tree) proto_tree_add_uint(tsp_tree, hf_tsp_time_usec, tvb, 8, 4, tsp_time_usec); } tsp_name_length = tvb_get_nstringz(tvb, 12, 256, tsp_name); if (tsp_name_length>0 && tsp_tree) { proto_tree_add_string(tsp_tree, hf_tsp_name, tvb, 12, tsp_name_length, tsp_name); } } void proto_reg_handoff_tsp(void) { dissector_add("udp.port", UDP_PORT_TIMED, tsp_handle); } void proto_register_tsp(void) { static hf_register_info hf[] = { { &hf_tsp_type, { "Type", "tsp.type", FT_UINT8, BASE_DEC, VALS(names_tsp_type), 0x0, "Packet Type", HFILL }}, { &hf_tsp_vers, { "Version", "tsp.version", FT_UINT8, BASE_DEC, NULL, 0x0, "Protocol Version Number", HFILL }}, { &hf_tsp_seq, { "Sequence", "tsp.sequence", FT_UINT16, BASE_DEC, NULL, 0x0, "Sequence Number", HFILL }}, { &hf_tsp_hopcnt, { "Hop Count", "tsp.hopcnt", FT_UINT8, BASE_DEC, NULL, 0x0, "Hop Count", HFILL }}, { &hf_tsp_time_sec, { "Seconds", "tsp.sec", FT_UINT32, BASE_DEC, NULL, 0x0, "Seconds", HFILL }}, { &hf_tsp_time_usec, { "Microseconds", "tsp.usec", FT_UINT32, BASE_DEC, NULL, 0x0, "Microseconds", HFILL }}, { &hf_tsp_name, { "Machine Name", "tsp.name", FT_STRING, BASE_DEC, NULL, 0x0, "Sender Machine Name", HFILL }} }; static gint *ett[] = { &ett_tsp }; proto_tsp = proto_register_protocol("Time Synchronization Protocol", "TSP", "tsp"); proto_register_field_array(proto_tsp, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); tsp_handle = create_dissector_handle(dissect_tsp, proto_tsp); }