2 * Routines for Time Synchronization Protocol (TSP) packet dissection
4 * Uwe Girlich <Uwe.Girlich@philosys.de>
6 * $Id: packet-tsp.c,v 1.4 2003/06/11 20:41:45 guy Exp $
8 * Ethereal - Network traffic analyzer
9 * By Gerald Combs <gerald@ethereal.com>
10 * Copyright 1998 Gerald Combs
12 * Copied from packet-quake.c
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
34 #include <epan/packet.h>
37 * For a full documentation of the Time Synchronization Protocol (TSP) see:
38 * http://docs.freebsd.org/44doc/smm/12.timed/paper.pdf
41 static int proto_tsp = -1;
42 static int hf_tsp_type = -1;
43 static int hf_tsp_vers = -1;
44 static int hf_tsp_seq = -1;
45 static int hf_tsp_hopcnt = -1;
46 static int hf_tsp_time_sec = -1;
47 static int hf_tsp_time_usec = -1;
48 static int hf_tsp_name = -1;
50 static gint ett_tsp = -1;
52 static dissector_handle_t tsp_handle;
55 /* timed port from /etc/services */
56 #define UDP_PORT_TIMED 525
59 static const value_string names_tsp_type[] = {
60 #define TSP_ANY 0 /* match any types */
62 #define TSP_ADJTIME 1 /* send adjtime */
63 { TSP_ADJTIME, "adjtime" },
64 #define TSP_ACK 2 /* generic acknowledgement */
66 #define TSP_MASTERREQ 3 /* ask for master's name */
67 { TSP_MASTERREQ, "masterreq" },
68 #define TSP_MASTERACK 4 /* acknowledge master request */
69 { TSP_MASTERACK, "masterack" },
70 #define TSP_SETTIME 5 /* send network time */
71 { TSP_SETTIME, "settime" },
72 #define TSP_MASTERUP 6 /* inform slaves that master is up */
73 { TSP_MASTERUP, "masterup" },
74 #define TSP_SLAVEUP 7 /* slave is up but not polled */
75 { TSP_SLAVEUP, "slaveup" },
76 #define TSP_ELECTION 8 /* advance candidature for master */
77 { TSP_ELECTION, "election" },
78 #define TSP_ACCEPT 9 /* support candidature of master */
79 { TSP_ACCEPT, "accept" },
80 #define TSP_REFUSE 10 /* reject candidature of master */
81 { TSP_REFUSE, "refuse" },
82 #define TSP_CONFLICT 11 /* two or more masters present */
83 { TSP_CONFLICT, "conflict" },
84 #define TSP_RESOLVE 12 /* masters' conflict resolution */
85 { TSP_RESOLVE, "resolve" },
86 #define TSP_QUIT 13 /* reject candidature if master is up */
88 #define TSP_DATE 14 /* reset the time (date command) */
90 #define TSP_DATEREQ 15 /* remote request to reset the time */
91 { TSP_DATEREQ, "datereq" },
92 #define TSP_DATEACK 16 /* acknowledge time setting */
93 { TSP_DATEACK, "dateack" },
94 #define TSP_TRACEON 17 /* turn tracing on */
95 { TSP_TRACEON, "traceon" },
96 #define TSP_TRACEOFF 18 /* turn tracing off */
97 { TSP_TRACEOFF, "traceoff" },
98 #define TSP_MSITE 19 /* find out master's site */
99 { TSP_MSITE, "msite" },
100 #define TSP_MSITEREQ 20 /* remote master's site request */
101 { TSP_MSITEREQ, "msitereq" },
102 #define TSP_TEST 21 /* for testing election algo */
103 { TSP_TEST, "test" },
104 #define TSP_SETDATE 22 /* New from date command */
105 { TSP_SETDATE, "setdate" },
106 #define TSP_SETDATEREQ 23 /* New remote for above */
107 { TSP_SETDATEREQ, "setdatereq" },
108 #define TSP_LOOP 24 /* loop detection packet */
109 { TSP_LOOP, "loop" },
115 dissect_tsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
117 proto_tree *tsp_tree = NULL;
118 proto_item *tsp_item = NULL;
122 if (check_col(pinfo->cinfo, COL_PROTOCOL))
123 col_set_str(pinfo->cinfo, COL_PROTOCOL, "TSP");
124 if (check_col(pinfo->cinfo, COL_INFO))
125 col_clear(pinfo->cinfo, COL_INFO);
127 tsp_type = tvb_get_guint8(tvb, 0);
128 if (check_col(pinfo->cinfo, COL_INFO))
129 col_add_str(pinfo->cinfo, COL_INFO,
130 val_to_str(tsp_type, names_tsp_type, "Unknown message type (%u)"));
133 tsp_item = proto_tree_add_item(tree, proto_tsp,
136 tsp_tree = proto_item_add_subtree(tsp_item, ett_tsp);
140 proto_tree_add_uint(tsp_tree, hf_tsp_type,
141 tvb, 0, 1, tsp_type);
142 proto_tree_add_item(tsp_tree, hf_tsp_vers,
144 proto_tree_add_item(tsp_tree, hf_tsp_seq,
152 proto_tree_add_item(tsp_tree, hf_tsp_hopcnt,
161 proto_tree_add_item(tsp_tree, hf_tsp_time_sec,
163 proto_tree_add_item(tsp_tree, hf_tsp_time_usec,
170 proto_tree_add_item(tsp_tree, hf_tsp_name, tvb, 12,
177 proto_reg_handoff_tsp(void)
179 dissector_add("udp.port", UDP_PORT_TIMED, tsp_handle);
184 proto_register_tsp(void)
186 static hf_register_info hf[] = {
188 { "Type", "tsp.type",
189 FT_UINT8, BASE_DEC, VALS(names_tsp_type), 0x0,
190 "Packet Type", HFILL }},
192 { "Version", "tsp.version",
193 FT_UINT8, BASE_DEC, NULL, 0x0,
194 "Protocol Version Number", HFILL }},
196 { "Sequence", "tsp.sequence",
197 FT_UINT16, BASE_DEC, NULL, 0x0,
198 "Sequence Number", HFILL }},
200 { "Hop Count", "tsp.hopcnt",
201 FT_UINT8, BASE_DEC, NULL, 0x0,
202 "Hop Count", HFILL }},
204 { "Seconds", "tsp.sec",
205 FT_UINT32, BASE_DEC, NULL, 0x0,
208 { "Microseconds", "tsp.usec",
209 FT_UINT32, BASE_DEC, NULL, 0x0,
210 "Microseconds", HFILL }},
212 { "Machine Name", "tsp.name",
213 FT_STRINGZ, BASE_DEC, NULL, 0x0,
214 "Sender Machine Name", HFILL }}
216 static gint *ett[] = {
220 proto_tsp = proto_register_protocol("Time Synchronization Protocol",
222 proto_register_field_array(proto_tsp, hf, array_length(hf));
223 proto_register_subtree_array(ett, array_length(ett));
225 tsp_handle = create_dissector_handle(dissect_tsp, proto_tsp);