2 * Routines for Time Synchronization Protocol (TSP) packet dissection
4 * Uwe Girlich <Uwe.Girlich@philosys.de>
8 * Wireshark - Network traffic analyzer
9 * By Gerald Combs <gerald@wireshark.org>
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 /* timed port from /etc/services */
53 #define UDP_PORT_TIMED 525
56 static const value_string names_tsp_type[] = {
57 #define TSP_ANY 0 /* match any types */
59 #define TSP_ADJTIME 1 /* send adjtime */
60 { TSP_ADJTIME, "adjtime" },
61 #define TSP_ACK 2 /* generic acknowledgement */
63 #define TSP_MASTERREQ 3 /* ask for master's name */
64 { TSP_MASTERREQ, "masterreq" },
65 #define TSP_MASTERACK 4 /* acknowledge master request */
66 { TSP_MASTERACK, "masterack" },
67 #define TSP_SETTIME 5 /* send network time */
68 { TSP_SETTIME, "settime" },
69 #define TSP_MASTERUP 6 /* inform slaves that master is up */
70 { TSP_MASTERUP, "masterup" },
71 #define TSP_SLAVEUP 7 /* slave is up but not polled */
72 { TSP_SLAVEUP, "slaveup" },
73 #define TSP_ELECTION 8 /* advance candidature for master */
74 { TSP_ELECTION, "election" },
75 #define TSP_ACCEPT 9 /* support candidature of master */
76 { TSP_ACCEPT, "accept" },
77 #define TSP_REFUSE 10 /* reject candidature of master */
78 { TSP_REFUSE, "refuse" },
79 #define TSP_CONFLICT 11 /* two or more masters present */
80 { TSP_CONFLICT, "conflict" },
81 #define TSP_RESOLVE 12 /* masters' conflict resolution */
82 { TSP_RESOLVE, "resolve" },
83 #define TSP_QUIT 13 /* reject candidature if master is up */
85 #define TSP_DATE 14 /* reset the time (date command) */
87 #define TSP_DATEREQ 15 /* remote request to reset the time */
88 { TSP_DATEREQ, "datereq" },
89 #define TSP_DATEACK 16 /* acknowledge time setting */
90 { TSP_DATEACK, "dateack" },
91 #define TSP_TRACEON 17 /* turn tracing on */
92 { TSP_TRACEON, "traceon" },
93 #define TSP_TRACEOFF 18 /* turn tracing off */
94 { TSP_TRACEOFF, "traceoff" },
95 #define TSP_MSITE 19 /* find out master's site */
96 { TSP_MSITE, "msite" },
97 #define TSP_MSITEREQ 20 /* remote master's site request */
98 { TSP_MSITEREQ, "msitereq" },
99 #define TSP_TEST 21 /* for testing election algo */
100 { TSP_TEST, "test" },
101 #define TSP_SETDATE 22 /* New from date command */
102 { TSP_SETDATE, "setdate" },
103 #define TSP_SETDATEREQ 23 /* New remote for above */
104 { TSP_SETDATEREQ, "setdatereq" },
105 #define TSP_LOOP 24 /* loop detection packet */
106 { TSP_LOOP, "loop" },
112 dissect_tsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
114 proto_tree *tsp_tree = NULL;
115 proto_item *tsp_item = NULL;
119 col_set_str(pinfo->cinfo, COL_PROTOCOL, "TSP");
120 col_clear(pinfo->cinfo, COL_INFO);
122 tsp_type = tvb_get_guint8(tvb, 0);
123 if (check_col(pinfo->cinfo, COL_INFO))
124 col_add_str(pinfo->cinfo, COL_INFO,
125 val_to_str(tsp_type, names_tsp_type, "Unknown message type (%u)"));
128 tsp_item = proto_tree_add_item(tree, proto_tsp,
131 tsp_tree = proto_item_add_subtree(tsp_item, ett_tsp);
135 proto_tree_add_uint(tsp_tree, hf_tsp_type,
136 tvb, 0, 1, tsp_type);
137 proto_tree_add_item(tsp_tree, hf_tsp_vers,
138 tvb, 1, 1, ENC_BIG_ENDIAN);
139 proto_tree_add_item(tsp_tree, hf_tsp_seq,
140 tvb, 2, 2, ENC_BIG_ENDIAN);
147 proto_tree_add_item(tsp_tree, hf_tsp_hopcnt,
148 tvb, 4, 1, ENC_BIG_ENDIAN);
156 proto_tree_add_item(tsp_tree, hf_tsp_time_sec,
157 tvb, 4, 4, ENC_BIG_ENDIAN);
158 proto_tree_add_item(tsp_tree, hf_tsp_time_usec,
159 tvb, 8, 4, ENC_BIG_ENDIAN);
165 proto_tree_add_item(tsp_tree, hf_tsp_name, tvb, 12,
166 -1, ENC_ASCII|ENC_NA);
172 proto_reg_handoff_tsp(void)
174 dissector_handle_t tsp_handle;
176 tsp_handle = create_dissector_handle(dissect_tsp, proto_tsp);
177 dissector_add_uint("udp.port", UDP_PORT_TIMED, tsp_handle);
182 proto_register_tsp(void)
184 static hf_register_info hf[] = {
186 { "Type", "tsp.type",
187 FT_UINT8, BASE_DEC, VALS(names_tsp_type), 0x0,
188 "Packet Type", HFILL }},
190 { "Version", "tsp.version",
191 FT_UINT8, BASE_DEC, NULL, 0x0,
192 "Protocol Version Number", HFILL }},
194 { "Sequence", "tsp.sequence",
195 FT_UINT16, BASE_DEC, NULL, 0x0,
196 "Sequence Number", HFILL }},
198 { "Hop Count", "tsp.hopcnt",
199 FT_UINT8, BASE_DEC, NULL, 0x0,
202 { "Seconds", "tsp.sec",
203 FT_UINT32, BASE_DEC, NULL, 0x0,
206 { "Microseconds", "tsp.usec",
207 FT_UINT32, BASE_DEC, NULL, 0x0,
210 { "Machine Name", "tsp.name",
211 FT_STRINGZ, BASE_NONE, NULL, 0x0,
212 "Sender Machine Name", HFILL }}
214 static gint *ett[] = {
218 proto_tsp = proto_register_protocol("Time Synchronization Protocol",
220 proto_register_field_array(proto_tsp, hf, array_length(hf));
221 proto_register_subtree_array(ett, array_length(ett));