2005-06-06 18:01:58 +00:00
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/* packet-isup_thin.c
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* Routines for ISUP Thin dissection
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* Copyright 2005, Anders Broman <anders.broman[at]ericsson.com>
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*
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* $Id$
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*
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2006-05-21 04:49:01 +00:00
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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2005-06-06 18:01:58 +00:00
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* Copyright 1998 Gerald Combs
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include <epan/conversation.h>
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#include <epan/packet.h>
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#include "prefs.h"
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static int ISUP_thinTCPPort = 0;
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static int tcp_port = 0;
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/* Initialize the protocol and registered fields */
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static int proto_isup_thin = -1;
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/* Initialize the subtree pointers */
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static int ett_isup_thin = -1;
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static int hf_isup_thin_count_type = -1;
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static int hf_isup_thin_count = -1;
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static int hf_isup_thin_message_class = -1;
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static int hf_isup_thin_version = -1;
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static int hf_isup_thin_message_type = -1;
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static int hf_isup_thin_serv_ind = -1;
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static int hf_isup_thin_subservind = -1;
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static int hf_isup_thin_priority = -1;
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static int hf_isup_thin_sls = -1;
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static int hf_isup_thin_opc = -1;
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static int hf_isup_thin_dpc = -1;
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static int hf_isup_thin_oam_message_name_code = -1;
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static int hf_isup_thin_mtp_primitive_message_name_code = -1;
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static int hf_isup_thin_isup_length = -1;
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static const value_string isup_thin_count_type_vals[] = {
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{0, "64 octet count (Not used by t-ISUP)"},
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{1, "4 octet count"},
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{ 0, NULL }
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};
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static const value_string isup_thin_message_type_vals[] = {
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{0, "OAM Message"},
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{1, "MTP Primitive"},
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{2, "Encapsulated ISUP Message format according to the used ISUP protocol"},
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{ 0, NULL }
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};
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static const value_string isup_thin_oam_message_name_code_vals[] = {
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{1, "Heartbeat"},
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{ 0, NULL }
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};
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static const value_string isup_thin_mtp_message_name_code_vals[] = {
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{1, "MTP_Pause"},
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{2, "MTP_Resume"},
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{3, "MTP_UP_Unavailable"},
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{4, "MTP_Cong"},
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{6, "MTP_Rest"},
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{7, "MTP_Rest_End"},
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{ 0, NULL }
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};
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2006-12-07 20:34:08 +00:00
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static dissector_handle_t isup_thin_handle;
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static dissector_handle_t isup_handle;
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2005-06-06 18:01:58 +00:00
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static int dissect_isup_thin(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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/* Code to actually dissect the packets */
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static int
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dissect_isup_thin(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ti;
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proto_tree *isup_thin_tree;
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tvbuff_t *next_tvb;
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gint offset = 0;
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gint octet;
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gint message_type;
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gint16 isup_message_length;
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/* Make entries in Protocol column and Info column on summary display */
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "isup_thin");
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/* Find the end line to be able to process the headers
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* Note that in case of [content-stuff] headers and [content-stuff] is separated by CRLF
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*/
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if (tree) {
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ti = proto_tree_add_item(tree, proto_isup_thin, tvb, 0, -1, FALSE);
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isup_thin_tree = proto_item_add_subtree(ti, ett_isup_thin);
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octet = tvb_get_guint8(tvb,offset);
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_count_type, tvb, offset, 1, FALSE);
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_count, tvb, offset, 2, FALSE);
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offset = offset + 2;
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_message_class, tvb, offset, 1, FALSE);
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_version, tvb, offset, 2, FALSE);
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offset++;
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message_type = tvb_get_guint8(tvb,offset) & 0x7f ;
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_message_type, tvb, offset, 1, FALSE);
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offset++;
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_serv_ind, tvb, offset, 1, FALSE);
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/* SubServInd */
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_subservind, tvb, offset, 1, FALSE);
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/* Priority */
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_priority, tvb, offset, 1, FALSE);
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offset++;
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_sls, tvb, offset, 1, FALSE);
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offset++;
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_opc, tvb, offset, 3, FALSE);
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offset = offset +3;
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_dpc, tvb, offset, 3, FALSE);
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offset = offset +3;
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/* 12 Bytes off measage header done */
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switch (message_type) {
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case 0:
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/* OAM message */
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_oam_message_name_code, tvb, offset, 1, FALSE);
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offset++;
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break;
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case 1:
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/* MTP Primitive */
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_mtp_primitive_message_name_code, tvb, offset, 1, FALSE);
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offset++;
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break;
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case 2:
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/*Encapsulated ISUP Message format according to the used ISUP protocol */
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isup_message_length = tvb_get_ntohs(tvb,offset);
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proto_tree_add_item(isup_thin_tree, hf_isup_thin_isup_length, tvb, offset, 2, FALSE);
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offset = offset +2;
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next_tvb = tvb_new_subset(tvb, offset, isup_message_length, isup_message_length);
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call_dissector(isup_handle, next_tvb, pinfo, tree);
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break;
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default:
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/* Unknown */
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return 0;
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}
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}/* if tree */
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return tvb_length(tvb);
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/* If this protocol has a sub-dissector call it here, see section 1.8 */
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}
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2006-05-21 04:49:01 +00:00
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/* Register the protocol with Wireshark */
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2005-06-06 18:01:58 +00:00
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/* If this dissector uses sub-dissector registration add a registration routine.
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This format is required because a script is used to find these routines and
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create the code that calls these routines.
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*/
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void
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proto_reg_handoff_isup_thin(void)
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{
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static int Initialized=FALSE;
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if (!Initialized) {
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isup_thin_handle = new_create_dissector_handle(dissect_isup_thin, proto_isup_thin);
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Initialized=TRUE;
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}else{
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dissector_delete("tcp.port", tcp_port, isup_thin_handle);
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}
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tcp_port = ISUP_thinTCPPort;
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dissector_add("tcp.port", tcp_port, isup_thin_handle);
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isup_handle = find_dissector("isup");
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}
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void
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proto_register_isup_thin(void)
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{
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/* Setup protocol subtree array */
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static gint *ett[] = {
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&ett_isup_thin,
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};
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/* Setup list of header fields */
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static hf_register_info hf[] = {
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{ &hf_isup_thin_count_type,
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{ "Count Type", "isup_thin.count.type",
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FT_UINT8, BASE_DEC,VALS(isup_thin_count_type_vals), 0x80,
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"Count Type", HFILL }
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},
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{ &hf_isup_thin_count,
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{ "Message length (counted according to bit 0) including the Message Header","isup_thin.count",
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FT_UINT16, BASE_DEC,NULL, 0x7fff,
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"Message length", HFILL }
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},
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{ &hf_isup_thin_message_class,
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{ "Message Class","isup_thin.message.class",
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FT_UINT8, BASE_DEC,NULL, 0xfc,
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"Message Class", HFILL }
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},
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{ &hf_isup_thin_version,
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{ "Version","isup_thin.count.version",
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FT_UINT16, BASE_DEC,NULL, 0x0380,
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"Version", HFILL }
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},
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{ &hf_isup_thin_message_type,
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{ "Message Type", "isup_thin.messaget.type",
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FT_UINT8, BASE_DEC,VALS(isup_thin_message_type_vals), 0x7f,
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"Message Type", HFILL }
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},
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{ &hf_isup_thin_serv_ind,
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{ "Service Indicator","isup_thin.servind",
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FT_UINT8, BASE_DEC,NULL, 0xf0,
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"Service Indicator", HFILL }
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},
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{ &hf_isup_thin_subservind,
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{ "Sub Service Field (Network Indicator)","isup_thin.subservind",
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FT_UINT8, BASE_DEC,NULL, 0x0c,
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"Sub Service Field (Network Indicator)", HFILL }
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},
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{ &hf_isup_thin_priority,
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{ "Priority","isup_thin.priority",
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FT_UINT8, BASE_DEC,NULL, 0x03,
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"Priority", HFILL }
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},
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{ &hf_isup_thin_sls,
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{ "Signalling Link Selection","isup_thin.sls",
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FT_UINT8, BASE_DEC,NULL, 0x0,
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"Signalling Link Selection", HFILL }
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},
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{ &hf_isup_thin_opc,
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{ "Originating Point Code","isup_thin.opc",
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FT_UINT32, BASE_DEC,NULL, 0x0,
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"Originating Point Code", HFILL }
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},
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{ &hf_isup_thin_dpc,
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{ "Destination Point Code","isup_thin.dpc",
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FT_UINT32, BASE_DEC,NULL, 0x0,
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"Destination Point Code", HFILL }
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},
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{ &hf_isup_thin_oam_message_name_code,
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{ "Message Name Code","isup_thin.oam.message.name",
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FT_UINT8, BASE_DEC,VALS(isup_thin_oam_message_name_code_vals), 0x0,
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"Message Name", HFILL }
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},
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{ &hf_isup_thin_mtp_primitive_message_name_code,
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{ "Message Name Code","isup_thin.mtp.message.name",
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FT_UINT8, BASE_DEC,VALS(isup_thin_mtp_message_name_code_vals), 0x0,
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"Message Name", HFILL }
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},
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{ &hf_isup_thin_isup_length,
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{ "ISUP message length","isup_thin.isup.message.length",
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FT_UINT16, BASE_DEC, NULL, 0x0,
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"ISUP message length", HFILL }
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},
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};
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module_t *isup_thin_module;
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/* Register the protocol name and description */
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proto_isup_thin = proto_register_protocol("ISUP Thin Protocol","isup_thin", "isup_thin");
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/* Required function calls to register the header fields and subtrees used */
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proto_register_field_array(proto_isup_thin, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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isup_thin_module = prefs_register_protocol(proto_isup_thin, NULL);
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prefs_register_uint_preference(isup_thin_module, "tcp.port",
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"ISUP Thin TCP Port",
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"Set TCP port for ISUP Thin messages",
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10,
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&ISUP_thinTCPPort);
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/*
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* Register the dissector by name, so other dissectors can
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2005-06-16 06:32:20 +00:00
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* grab it by name rather than just referring to it directly.
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2005-06-06 18:01:58 +00:00
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*/
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2005-06-16 06:32:20 +00:00
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new_register_dissector("isup_thin", dissect_isup_thin, proto_isup_thin);
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2005-06-06 18:01:58 +00:00
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}
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