Add a dissector for Nortels LGE Monitor protocol.

svn path=/trunk/; revision=17808

1 files changed, 198 insertions, 0 deletions

diff --git a/epan/dissectors/packet-lge_monitor.c b/epan/dissectors/packet-lge_monitor.c
new file mode 100644
index 0000000000..d592780c51
--- /dev/null
+++ b/epan/dissectors/packet-lge_monitor.c
@@ -0,0 +1,198 @@
+/* packet-lge_monitor.c
+ * Routines for LGE Monitor packet dissection
+ * Copyright 2006, Anders Broman <anders.broman[at]ericsson.com>
+ *
+ * $Id$
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * Copyright 1998 Gerald Combs
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * LGE Monitor is a trace tool from Nortel.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <glib.h>
+
+#include <epan/packet.h>
+#include <epan/proto.h>
+
+#include "prefs.h"
+
+
+/* Initialize the protocol and registered fields */
+static int proto_lge_monitor		= -1;
+
+static int hf_lge_monitor_dir = -1;
+static int hf_lge_monitor_prot = -1;
+static int hf_lge_monitor_length = -1;
+
+/* Initialize the subtree pointers */
+static int ett_lge_monitor = -1;
+
+
+static guint LGEMonitorUDPPort = 0;
+static guint udp_port = 0;
+static dissector_handle_t mtp3_handle, m3ua_handle, sccp_handle, sctp_handle;
+
+static const value_string lge_monitor_dir_vals[] = {
+	{ 0x00,	"TX(Transmit Message Signaling Unit)" },
+	{ 0x01,	"RX(Receive Message Signaling Unit)" },
+	{ 0,	NULL }
+};
+
+static const value_string lge_monitor_prot_vals[] = {
+	{ 0x00,	"MTP-3(Message Transfer Part 3)" },
+	{ 0x01, "SCCP(Signaling Connection Control Part)"},
+	{ 0x02, "SCTP(Stream Control Transmission Protocol)"},
+	{ 0x03, "M3UA(MTP-3 User Adaptation)"},
+	{ 0,	NULL }
+};
+
+#define LGEMON_PROTO_HEADER_LENGTH 12
+
+/* Code to actually dissect the packets */
+static void
+dissect_lge_monitor(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+	int offset = 0;
+	guint32 lge_monitor_proto_id;
+	tvbuff_t* next_tvb = NULL;
+
+/* Set up structures needed to add the protocol subtree and manage it */
+	proto_item *ti;
+	proto_tree *lge_monitor_tree;
+
+/* Make entries in Protocol column and Info column on summary display */
+	if (check_col(pinfo->cinfo, COL_PROTOCOL)) 
+		col_set_str(pinfo->cinfo, COL_PROTOCOL, "LGE Monitor");
+
+	ti = proto_tree_add_item(tree, proto_lge_monitor, tvb, 0, LGEMON_PROTO_HEADER_LENGTH, FALSE);
+	lge_monitor_tree = proto_item_add_subtree(ti, ett_lge_monitor);
+
+	proto_tree_add_text(lge_monitor_tree, tvb, offset, LGEMON_PROTO_HEADER_LENGTH, "LGE Monitor PDU");
+	proto_tree_add_item(lge_monitor_tree, hf_lge_monitor_dir, tvb, offset, 4, FALSE);
+	offset = offset +4;
+	lge_monitor_proto_id = tvb_get_ntohl(tvb,offset);
+	proto_tree_add_item(lge_monitor_tree, hf_lge_monitor_prot, tvb, offset, 4, FALSE);
+	offset = offset +4;
+	proto_tree_add_item(lge_monitor_tree, hf_lge_monitor_length, tvb, offset, 4, FALSE);
+	offset = offset +4;
+
+	next_tvb = tvb_new_subset(tvb, offset, -1, -1);
+
+	switch (lge_monitor_proto_id){
+	case 0: /* MTP3 */
+		call_dissector(mtp3_handle, next_tvb, pinfo, tree);
+		break;
+	case 1: /* SCCP */
+		call_dissector(sccp_handle, next_tvb, pinfo, tree);
+		break;
+	case 2: /* SCTP */
+		call_dissector(sctp_handle, next_tvb, pinfo, tree);
+		return;
+	case 3: /* M3UA */
+		call_dissector(m3ua_handle, next_tvb, pinfo, tree);
+		return;
+	default:
+		proto_tree_add_text(lge_monitor_tree, tvb, offset, -1, "LGE Monitor data");
+		break;
+	}
+	return;
+}
+
+
+void
+proto_reg_handoff_lge_monitor(void)
+{
+	dissector_handle_t lge_monitor_handle;
+	static int lge_monitor_prefs_initialized = FALSE;
+	
+	lge_monitor_handle = create_dissector_handle(dissect_lge_monitor, proto_lge_monitor);
+
+	if (!lge_monitor_prefs_initialized) {
+		lge_monitor_prefs_initialized = TRUE;
+	  }
+	else {
+		dissector_delete("udp.port", udp_port, lge_monitor_handle);
+	}
+
+	udp_port = LGEMonitorUDPPort;
+	dissector_add("udp.port", LGEMonitorUDPPort, lge_monitor_handle);
+	mtp3_handle  = find_dissector("mtp3");
+	m3ua_handle  = find_dissector("m3ua");
+	sccp_handle  = find_dissector("sccp");
+	sctp_handle  = find_dissector("sctp");
+}
+
+void
+proto_register_lge_monitor(void)
+{                 
+
+	module_t *lge_monitor_module;
+
+/* Setup list of header fields  */
+	static hf_register_info hf[] = {
+		{ &hf_lge_monitor_dir,
+			{ "Direction",           "lge_monitor.dir",
+			FT_UINT32, BASE_DEC, VALS(lge_monitor_dir_vals), 0x0,          
+			"Direction", HFILL }
+		},
+		{ &hf_lge_monitor_prot,
+			{ "Protocol Identifier",           "lge_monitor.prot",
+			FT_UINT32, BASE_DEC, VALS(lge_monitor_prot_vals), 0x0,          
+			"Protocol Identifier", HFILL }
+		},
+		{ &hf_lge_monitor_length,
+			{ "Payload Length",           "lge_monitor.length",
+			FT_UINT32, BASE_DEC, NULL, 0x0,          
+			"Payload Length", HFILL }
+		},
+	};
+
+/* Setup protocol subtree array */
+	static gint *ett[] = {
+		&ett_lge_monitor,
+	};
+
+/* Register the protocol name and description */
+	proto_lge_monitor = proto_register_protocol("LGE Monitor","LGE_Monitor", "lge_monitor");
+
+/* Required function calls to register the header fields and subtrees used */
+	proto_register_field_array(proto_lge_monitor, hf, array_length(hf));
+	proto_register_subtree_array(ett, array_length(ett));
+	/* Register a configuration option for port */
+
+	
+	lge_monitor_module = prefs_register_protocol(proto_lge_monitor, proto_reg_handoff_lge_monitor);
+
+	prefs_register_uint_preference(lge_monitor_module, "udp.port",
+								   "LGE Monitor UDP Port",
+								   "Set UDP port for LGE Monitor messages",
+								   10,
+								   &LGEMonitorUDPPort);
+
+}
+
+