forked from osmocom/wireshark
2eb7b05b8c
Similar to the "tcp.port" changes in I99604f95d426ad345f4b494598d94178b886eb67, convert dissectors that use "udp.port". More cleanup done on dissectors that use both TCP and UDP dissector tables, so that less preference callbacks exist. Change-Id: If07be9b9e850c244336a7069599cd554ce312dd3 Reviewed-on: https://code.wireshark.org/review/18120 Petri-Dish: Michael Mann <mmann78@netscape.net> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Michael Mann <mmann78@netscape.net>
230 lines
6.9 KiB
C
230 lines
6.9 KiB
C
/* packet-tsp.c
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* Routines for Time Synchronization Protocol (TSP) packet dissection
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*
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* Uwe Girlich <Uwe.Girlich@philosys.de>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* Copied from packet-quake.c
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <epan/packet.h>
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/*
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* For a full documentation of the Time Synchronization Protocol (TSP) see:
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* http://docs.freebsd.org/44doc/smm/12.timed/paper.pdf
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*/
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void proto_register_tsp(void);
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void proto_reg_handoff_tsp(void);
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static int proto_tsp = -1;
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static int hf_tsp_type = -1;
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static int hf_tsp_vers = -1;
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static int hf_tsp_seq = -1;
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static int hf_tsp_hopcnt = -1;
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static int hf_tsp_time_sec = -1;
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static int hf_tsp_time_usec = -1;
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static int hf_tsp_name = -1;
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static gint ett_tsp = -1;
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/* timed port from /etc/services */
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#define UDP_PORT_TIMED 525
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static const value_string names_tsp_type[] = {
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#define TSP_ANY 0 /* match any types */
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{ TSP_ANY, "any" },
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#define TSP_ADJTIME 1 /* send adjtime */
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{ TSP_ADJTIME, "adjtime" },
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#define TSP_ACK 2 /* generic acknowledgement */
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{ TSP_ACK, "ack" },
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#define TSP_MASTERREQ 3 /* ask for master's name */
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{ TSP_MASTERREQ, "masterreq" },
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#define TSP_MASTERACK 4 /* acknowledge master request */
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{ TSP_MASTERACK, "masterack" },
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#define TSP_SETTIME 5 /* send network time */
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{ TSP_SETTIME, "settime" },
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#define TSP_MASTERUP 6 /* inform slaves that master is up */
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{ TSP_MASTERUP, "masterup" },
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#define TSP_SLAVEUP 7 /* slave is up but not polled */
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{ TSP_SLAVEUP, "slaveup" },
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#define TSP_ELECTION 8 /* advance candidature for master */
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{ TSP_ELECTION, "election" },
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#define TSP_ACCEPT 9 /* support candidature of master */
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{ TSP_ACCEPT, "accept" },
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#define TSP_REFUSE 10 /* reject candidature of master */
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{ TSP_REFUSE, "refuse" },
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#define TSP_CONFLICT 11 /* two or more masters present */
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{ TSP_CONFLICT, "conflict" },
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#define TSP_RESOLVE 12 /* masters' conflict resolution */
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{ TSP_RESOLVE, "resolve" },
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#define TSP_QUIT 13 /* reject candidature if master is up */
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{ TSP_QUIT, "quit" },
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#define TSP_DATE 14 /* reset the time (date command) */
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{ TSP_DATE, "date" },
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#define TSP_DATEREQ 15 /* remote request to reset the time */
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{ TSP_DATEREQ, "datereq" },
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#define TSP_DATEACK 16 /* acknowledge time setting */
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{ TSP_DATEACK, "dateack" },
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#define TSP_TRACEON 17 /* turn tracing on */
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{ TSP_TRACEON, "traceon" },
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#define TSP_TRACEOFF 18 /* turn tracing off */
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{ TSP_TRACEOFF, "traceoff" },
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#define TSP_MSITE 19 /* find out master's site */
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{ TSP_MSITE, "msite" },
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#define TSP_MSITEREQ 20 /* remote master's site request */
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{ TSP_MSITEREQ, "msitereq" },
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#define TSP_TEST 21 /* for testing election algo */
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{ TSP_TEST, "test" },
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#define TSP_SETDATE 22 /* New from date command */
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{ TSP_SETDATE, "setdate" },
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#define TSP_SETDATEREQ 23 /* New remote for above */
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{ TSP_SETDATEREQ, "setdatereq" },
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#define TSP_LOOP 24 /* loop detection packet */
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{ TSP_LOOP, "loop" },
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{ 0, NULL }
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};
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static int
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dissect_tsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_tree *tsp_tree;
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proto_item *tsp_item;
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guint8 tsp_type;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "TSP");
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col_clear(pinfo->cinfo, COL_INFO);
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tsp_type = tvb_get_guint8(tvb, 0);
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col_add_str(pinfo->cinfo, COL_INFO,
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val_to_str(tsp_type, names_tsp_type, "Unknown message type (%u)"));
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tsp_item = proto_tree_add_item(tree, proto_tsp,
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tvb, 0, -1, ENC_NA);
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tsp_tree = proto_item_add_subtree(tsp_item, ett_tsp);
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if (tsp_tree) {
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proto_tree_add_uint(tsp_tree, hf_tsp_type,
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tvb, 0, 1, tsp_type);
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proto_tree_add_item(tsp_tree, hf_tsp_vers,
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tvb, 1, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tsp_tree, hf_tsp_seq,
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tvb, 2, 2, ENC_BIG_ENDIAN);
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}
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switch (tsp_type) {
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case TSP_LOOP:
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if (tsp_tree)
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proto_tree_add_item(tsp_tree, hf_tsp_hopcnt,
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tvb, 4, 1, ENC_BIG_ENDIAN);
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break;
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case TSP_SETTIME:
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case TSP_ADJTIME:
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case TSP_SETDATE:
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case TSP_SETDATEREQ:
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if (tsp_tree) {
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proto_tree_add_item(tsp_tree, hf_tsp_time_sec,
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tvb, 4, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(tsp_tree, hf_tsp_time_usec,
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tvb, 8, 4, ENC_BIG_ENDIAN);
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}
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break;
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}
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if (tsp_tree) {
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proto_tree_add_item(tsp_tree, hf_tsp_name, tvb, 12,
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-1, ENC_ASCII|ENC_NA);
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}
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return tvb_captured_length(tvb);
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}
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void
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proto_reg_handoff_tsp(void)
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{
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dissector_handle_t tsp_handle;
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tsp_handle = create_dissector_handle(dissect_tsp, proto_tsp);
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dissector_add_uint_with_preference("udp.port", UDP_PORT_TIMED, tsp_handle);
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}
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void
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proto_register_tsp(void)
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{
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static hf_register_info hf[] = {
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{ &hf_tsp_type,
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{ "Type", "tsp.type",
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FT_UINT8, BASE_DEC, VALS(names_tsp_type), 0x0,
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"Packet Type", HFILL }},
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{ &hf_tsp_vers,
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{ "Version", "tsp.version",
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FT_UINT8, BASE_DEC, NULL, 0x0,
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"Protocol Version Number", HFILL }},
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{ &hf_tsp_seq,
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{ "Sequence", "tsp.sequence",
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FT_UINT16, BASE_DEC, NULL, 0x0,
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"Sequence Number", HFILL }},
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{ &hf_tsp_hopcnt,
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{ "Hop Count", "tsp.hopcnt",
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FT_UINT8, BASE_DEC, NULL, 0x0,
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NULL, HFILL }},
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{ &hf_tsp_time_sec,
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{ "Seconds", "tsp.sec",
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FT_UINT32, BASE_DEC, NULL, 0x0,
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NULL, HFILL }},
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{ &hf_tsp_time_usec,
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{ "Microseconds", "tsp.usec",
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FT_UINT32, BASE_DEC, NULL, 0x0,
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NULL, HFILL }},
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{ &hf_tsp_name,
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{ "Machine Name", "tsp.name",
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FT_STRINGZ, BASE_NONE, NULL, 0x0,
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"Sender Machine Name", HFILL }}
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};
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static gint *ett[] = {
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&ett_tsp
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};
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proto_tsp = proto_register_protocol("Time Synchronization Protocol",
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"TSP", "tsp");
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proto_register_field_array(proto_tsp, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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