2 * Routines for Time Synchronization Protocol (TSP) packet dissection
4 * Uwe Girlich <Uwe.Girlich@philosys.de>
6 * $Id: packet-tsp.c,v 1.1 2002/01/31 07:50:29 girlich 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.
33 #ifdef HAVE_SYS_TYPES_H
34 # include <sys/types.h>
37 #ifdef HAVE_NETINET_IN_H
38 # include <netinet/in.h>
42 #include <epan/packet.h>
45 * For a full documentation of the Time Synchronization Protocol (TSP) see:
46 * http://docs.freebsd.org/44doc/smm/12.timed/paper.pdf
49 static int proto_tsp = -1;
50 static int hf_tsp_type = -1;
51 static int hf_tsp_vers = -1;
52 static int hf_tsp_seq = -1;
53 static int hf_tsp_hopcnt = -1;
54 static int hf_tsp_time_sec = -1;
55 static int hf_tsp_time_usec = -1;
56 static int hf_tsp_name = -1;
58 static gint ett_tsp = -1;
60 static dissector_handle_t tsp_handle;
63 /* timed port from /etc/services */
64 #define UDP_PORT_TIMED 525
67 static const value_string names_tsp_type[] = {
68 #define TSP_ANY 0 /* match any types */
70 #define TSP_ADJTIME 1 /* send adjtime */
71 { TSP_ADJTIME, "adjtime" },
72 #define TSP_ACK 2 /* generic acknowledgement */
74 #define TSP_MASTERREQ 3 /* ask for master's name */
75 { TSP_MASTERREQ, "masterreq" },
76 #define TSP_MASTERACK 4 /* acknowledge master request */
77 { TSP_MASTERACK, "masterack" },
78 #define TSP_SETTIME 5 /* send network time */
79 { TSP_SETTIME, "settime" },
80 #define TSP_MASTERUP 6 /* inform slaves that master is up */
81 { TSP_MASTERUP, "masterup" },
82 #define TSP_SLAVEUP 7 /* slave is up but not polled */
83 { TSP_SLAVEUP, "slaveup" },
84 #define TSP_ELECTION 8 /* advance candidature for master */
85 { TSP_ELECTION, "election" },
86 #define TSP_ACCEPT 9 /* support candidature of master */
87 { TSP_ACCEPT, "accept" },
88 #define TSP_REFUSE 10 /* reject candidature of master */
89 { TSP_REFUSE, "refuse" },
90 #define TSP_CONFLICT 11 /* two or more masters present */
91 { TSP_CONFLICT, "conflict" },
92 #define TSP_RESOLVE 12 /* masters' conflict resolution */
93 { TSP_RESOLVE, "resolve" },
94 #define TSP_QUIT 13 /* reject candidature if master is up */
96 #define TSP_DATE 14 /* reset the time (date command) */
98 #define TSP_DATEREQ 15 /* remote request to reset the time */
99 { TSP_DATEREQ, "datereq" },
100 #define TSP_DATEACK 16 /* acknowledge time setting */
101 { TSP_DATEACK, "dateack" },
102 #define TSP_TRACEON 17 /* turn tracing on */
103 { TSP_TRACEON, "traceon" },
104 #define TSP_TRACEOFF 18 /* turn tracing off */
105 { TSP_TRACEOFF, "traceoff" },
106 #define TSP_MSITE 19 /* find out master's site */
107 { TSP_MSITE, "msite" },
108 #define TSP_MSITEREQ 20 /* remote master's site request */
109 { TSP_MSITEREQ, "msitereq" },
110 #define TSP_TEST 21 /* for testing election algo */
111 { TSP_TEST, "test" },
112 #define TSP_SETDATE 22 /* New from date command */
113 { TSP_SETDATE, "setdate" },
114 #define TSP_SETDATEREQ 23 /* New remote for above */
115 { TSP_SETDATEREQ, "setdatereq" },
116 #define TSP_LOOP 24 /* loop detection packet */
117 { TSP_LOOP, "loop" },
123 dissect_tsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
125 proto_tree *tsp_tree = NULL;
126 proto_item *tsp_item = NULL;
131 guint32 tsp_time_sec;
132 guint32 tsp_time_usec;
134 gint tsp_name_length;
135 guint8 tsp_name[256];
137 if (check_col(pinfo->cinfo, COL_PROTOCOL))
138 col_set_str(pinfo->cinfo, COL_PROTOCOL, "TSP");
139 if (check_col(pinfo->cinfo, COL_INFO))
140 col_clear(pinfo->cinfo, COL_INFO);
142 tsp_type = tvb_get_guint8(tvb, 0);
143 tsp_vers = tvb_get_guint8(tvb, 1);
144 tsp_seq = tvb_get_ntohs(tvb, 2);
147 tsp_item = proto_tree_add_item(tree, proto_tsp,
150 tsp_tree = proto_item_add_subtree(tsp_item, ett_tsp);
154 proto_tree_add_uint(tsp_tree, hf_tsp_type,
155 tvb, 0, 1, tsp_type);
156 proto_tree_add_uint(tsp_tree, hf_tsp_vers,
157 tvb, 1, 1, tsp_vers);
158 proto_tree_add_uint(tsp_tree, hf_tsp_seq,
162 if (tsp_type == TSP_LOOP) {
163 tsp_hopcnt = tvb_get_guint8(tvb, 4);
165 proto_tree_add_uint(tsp_tree, hf_tsp_hopcnt,
166 tvb, 4, 1, tsp_type);
169 if (tsp_type == TSP_SETTIME ||
170 tsp_type == TSP_ADJTIME ||
171 tsp_type == TSP_SETDATE ||
172 tsp_type == TSP_SETDATEREQ) {
174 tsp_time_sec = tvb_get_ntohl(tvb, 4);
176 proto_tree_add_uint(tsp_tree, hf_tsp_time_sec,
177 tvb, 4, 4, tsp_time_sec);
178 tsp_time_usec = tvb_get_ntohl(tvb, 8);
180 proto_tree_add_uint(tsp_tree, hf_tsp_time_usec,
181 tvb, 8, 4, tsp_time_usec);
184 tsp_name_length = tvb_get_nstringz(tvb, 12, 256, tsp_name);
185 if (tsp_name_length>0 && tsp_tree) {
186 proto_tree_add_string(tsp_tree, hf_tsp_name, tvb, 12,
187 tsp_name_length, tsp_name);
193 proto_reg_handoff_tsp(void)
195 dissector_add("udp.port", UDP_PORT_TIMED, tsp_handle);
200 proto_register_tsp(void)
202 static hf_register_info hf[] = {
204 { "Type", "tsp.type",
205 FT_UINT8, BASE_DEC, VALS(names_tsp_type), 0x0,
206 "Packet Type", HFILL }},
208 { "Version", "tsp.version",
209 FT_UINT8, BASE_DEC, NULL, 0x0,
210 "Protocol Version Number", HFILL }},
212 { "Sequence", "tsp.sequence",
213 FT_UINT16, BASE_DEC, NULL, 0x0,
214 "Sequence Number", HFILL }},
216 { "Hop Count", "tsp.hopcnt",
217 FT_UINT8, BASE_DEC, NULL, 0x0,
218 "Hop Count", HFILL }},
220 { "Seconds", "tsp.sec",
221 FT_UINT32, BASE_DEC, NULL, 0x0,
224 { "Microseconds", "tsp.usec",
225 FT_UINT32, BASE_DEC, NULL, 0x0,
226 "Microseconds", HFILL }},
228 { "Machine Name", "tsp.name",
229 FT_STRING, BASE_DEC, NULL, 0x0,
230 "Sender Machine Name", HFILL }}
232 static gint *ett[] = {
236 proto_tsp = proto_register_protocol("Time Synchronization Protocol",
238 proto_register_field_array(proto_tsp, hf, array_length(hf));
239 proto_register_subtree_array(ett, array_length(ett));
241 tsp_handle = create_dissector_handle(dissect_tsp, proto_tsp);