1 /* packet-lge_monitor.c
2 * Routines for LGE Monitor packet dissection
3 * Copyright 2006, Anders Broman <anders.broman[at]ericsson.com>
7 * Wireshark - Network traffic analyzer
8 * By Gerald Combs <gerald@wireshark.org>
9 * Copyright 1998 Gerald Combs
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * LGE Monitor is a trace tool from Nortel.
38 #include <epan/packet.h>
39 #include <epan/proto.h>
44 /* Initialize the protocol and registered fields */
45 static int proto_lge_monitor = -1;
47 static int hf_lge_monitor_dir = -1;
48 static int hf_lge_monitor_prot = -1;
49 static int hf_lge_monitor_length = -1;
51 /* Initialize the subtree pointers */
52 static int ett_lge_monitor = -1;
55 static guint LGEMonitorUDPPort = 0;
56 static dissector_handle_t mtp3_handle, m3ua_handle, sccp_handle, sctp_handle;
58 static const value_string lge_monitor_dir_vals[] = {
59 { 0x00, "TX(Transmit Message Signaling Unit)" },
60 { 0x01, "RX(Receive Message Signaling Unit)" },
64 static const value_string lge_monitor_prot_vals[] = {
65 { 0x00, "MTP-3(Message Transfer Part 3)" },
66 { 0x01, "SCCP(Signaling Connection Control Part)"},
67 { 0x02, "SCTP(Stream Control Transmission Protocol)"},
68 { 0x03, "M3UA(MTP-3 User Adaptation)"},
72 #define LGEMON_PROTO_HEADER_LENGTH 12
74 /* Code to actually dissect the packets */
76 dissect_lge_monitor(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
79 guint32 lge_monitor_proto_id;
80 tvbuff_t* next_tvb = NULL;
82 /* Set up structures needed to add the protocol subtree and manage it */
84 proto_tree *lge_monitor_tree;
86 /* Make entries in Protocol column and Info column on summary display */
87 col_set_str(pinfo->cinfo, COL_PROTOCOL, "LGE Monitor");
89 ti = proto_tree_add_item(tree, proto_lge_monitor, tvb, 0, LGEMON_PROTO_HEADER_LENGTH, FALSE);
90 lge_monitor_tree = proto_item_add_subtree(ti, ett_lge_monitor);
92 proto_tree_add_text(lge_monitor_tree, tvb, offset, LGEMON_PROTO_HEADER_LENGTH, "LGE Monitor PDU");
93 proto_tree_add_item(lge_monitor_tree, hf_lge_monitor_dir, tvb, offset, 4, FALSE);
95 lge_monitor_proto_id = tvb_get_ntohl(tvb,offset);
96 proto_tree_add_item(lge_monitor_tree, hf_lge_monitor_prot, tvb, offset, 4, FALSE);
98 proto_tree_add_item(lge_monitor_tree, hf_lge_monitor_length, tvb, offset, 4, FALSE);
101 next_tvb = tvb_new_subset(tvb, offset, -1, -1);
103 switch (lge_monitor_proto_id){
105 call_dissector(mtp3_handle, next_tvb, pinfo, tree);
108 call_dissector(sccp_handle, next_tvb, pinfo, tree);
111 call_dissector(sctp_handle, next_tvb, pinfo, tree);
114 call_dissector(m3ua_handle, next_tvb, pinfo, tree);
117 proto_tree_add_text(lge_monitor_tree, tvb, offset, -1, "LGE Monitor data");
125 proto_reg_handoff_lge_monitor(void)
127 static dissector_handle_t lge_monitor_handle;
128 static guint saved_udp_port;
129 static gboolean lge_monitor_prefs_initialized = FALSE;
131 if (!lge_monitor_prefs_initialized) {
132 lge_monitor_handle = create_dissector_handle(dissect_lge_monitor, proto_lge_monitor);
133 dissector_add_handle("udp.port", lge_monitor_handle); /* for 'decode-as' */
134 mtp3_handle = find_dissector("mtp3");
135 m3ua_handle = find_dissector("m3ua");
136 sccp_handle = find_dissector("sccp");
137 sctp_handle = find_dissector("sctp");
138 lge_monitor_prefs_initialized = TRUE;
141 if (saved_udp_port != 0) {
142 dissector_delete("udp.port", saved_udp_port, lge_monitor_handle);
146 if (LGEMonitorUDPPort != 0) {
147 dissector_add("udp.port", LGEMonitorUDPPort, lge_monitor_handle);
149 saved_udp_port = LGEMonitorUDPPort;
153 proto_register_lge_monitor(void)
156 module_t *lge_monitor_module;
158 /* Setup list of header fields */
159 static hf_register_info hf[] = {
160 { &hf_lge_monitor_dir,
161 { "Direction", "lge_monitor.dir",
162 FT_UINT32, BASE_DEC, VALS(lge_monitor_dir_vals), 0x0,
165 { &hf_lge_monitor_prot,
166 { "Protocol Identifier", "lge_monitor.prot",
167 FT_UINT32, BASE_DEC, VALS(lge_monitor_prot_vals), 0x0,
170 { &hf_lge_monitor_length,
171 { "Payload Length", "lge_monitor.length",
172 FT_UINT32, BASE_DEC, NULL, 0x0,
177 /* Setup protocol subtree array */
178 static gint *ett[] = {
182 /* Register the protocol name and description */
183 proto_lge_monitor = proto_register_protocol("LGE Monitor","LGE_Monitor", "lge_monitor");
185 /* Required function calls to register the header fields and subtrees used */
186 proto_register_field_array(proto_lge_monitor, hf, array_length(hf));
187 proto_register_subtree_array(ett, array_length(ett));
188 /* Register a configuration option for port */
191 lge_monitor_module = prefs_register_protocol(proto_lge_monitor, proto_reg_handoff_lge_monitor);
193 prefs_register_uint_preference(lge_monitor_module, "udp.port",
194 "LGE Monitor UDP Port",
195 "Set UDP port for LGE Monitor messages",