2004-01-26 20:48:39 +00:00
|
|
|
/* packet-teimanagement.c
|
|
|
|
* Routines for LAPD TEI Management frame disassembly
|
|
|
|
* Rolf Fiedler <rolf.fiedler@innoventif.com>
|
|
|
|
* based on code by Gilbert Ramirez <gram@alumni.rice.edu>
|
|
|
|
*
|
2004-07-18 00:24:25 +00:00
|
|
|
* $Id$
|
2004-01-26 20:48:39 +00:00
|
|
|
*
|
2006-05-21 04:49:01 +00:00
|
|
|
* Wireshark - Network traffic analyzer
|
|
|
|
* By Gerald Combs <gerald@wireshark.org>
|
2004-01-26 20:48:39 +00:00
|
|
|
* Copyright 1998
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
|
|
# include "config.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <glib.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <epan/packet.h>
|
2005-09-17 00:02:31 +00:00
|
|
|
#include <epan/lapd_sapi.h>
|
2004-01-26 20:48:39 +00:00
|
|
|
|
|
|
|
/* ISDN/LAPD references:
|
|
|
|
*
|
|
|
|
* http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/isdn.htm
|
|
|
|
* http://www.ece.wpi.edu/courses/ee535/hwk11cd95/agrebe/agrebe.html
|
|
|
|
* http://www.acacia-net.com/Clarinet/Protocol/q9213o84.htm
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int proto_tei=-1;
|
|
|
|
|
|
|
|
static int lm_entity_id=-1;
|
|
|
|
static int lm_reference=-1;
|
|
|
|
static int lm_message=-1;
|
|
|
|
static int lm_action=-1;
|
|
|
|
static int lm_extend =-1;
|
|
|
|
static gint lm_subtree=-1;
|
|
|
|
|
|
|
|
#define TEI_ID_REQUEST 0x01
|
|
|
|
#define TEI_ID_ASSIGNED 0x02
|
|
|
|
#define TEI_ID_DENIED 0x03
|
|
|
|
#define TEI_ID_CHECK_REQ 0x04
|
|
|
|
#define TEI_ID_CHECK_RESP 0x05
|
|
|
|
#define TEI_ID_REMOVE 0x06
|
|
|
|
#define TEI_ID_VERIFY 0x07
|
|
|
|
|
|
|
|
static const value_string tei_msg_vals[]={
|
|
|
|
{ TEI_ID_REQUEST, "Identity Request"},
|
|
|
|
{ TEI_ID_ASSIGNED, "Identity Assigned"},
|
|
|
|
{ TEI_ID_DENIED, "Identity Denied"},
|
|
|
|
{ TEI_ID_CHECK_REQ, "Identity Check Request"},
|
|
|
|
{ TEI_ID_CHECK_RESP, "Identity Check Response"},
|
|
|
|
{ TEI_ID_REMOVE, "Identity Remove"},
|
|
|
|
{ TEI_ID_VERIFY, "Identity Verify"},
|
|
|
|
{ 0, NULL}
|
|
|
|
};
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_teimanagement(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
|
|
|
proto_tree *tei_tree = NULL;
|
|
|
|
proto_item *tei_ti;
|
|
|
|
guint8 message;
|
|
|
|
|
2009-08-09 06:26:46 +00:00
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "TEI");
|
2009-08-09 07:36:13 +00:00
|
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
2004-01-26 20:48:39 +00:00
|
|
|
|
|
|
|
if (tree) {
|
|
|
|
tei_ti = proto_tree_add_item(tree, proto_tei, tvb, 0, 5, FALSE);
|
|
|
|
tei_tree = proto_item_add_subtree(tei_ti, lm_subtree);
|
|
|
|
|
|
|
|
proto_tree_add_item(tei_tree, lm_entity_id, tvb, 0, 1, FALSE);
|
|
|
|
proto_tree_add_item(tei_tree, lm_reference, tvb, 1, 2, FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
message = tvb_get_guint8(tvb, 3);
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
2007-11-08 22:49:03 +00:00
|
|
|
col_add_str(pinfo->cinfo, COL_INFO,
|
2004-01-26 20:48:39 +00:00
|
|
|
val_to_str(message, tei_msg_vals, "Unknown message type (0x%04x)"));
|
|
|
|
if (tree) {
|
|
|
|
proto_tree_add_uint(tei_tree, lm_message, tvb, 3, 1, message);
|
|
|
|
proto_tree_add_item(tei_tree, lm_action, tvb, 4, 1, FALSE);
|
|
|
|
proto_tree_add_item(tei_tree, lm_extend, tvb, 4, 1, FALSE);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_register_teimanagement(void)
|
|
|
|
{
|
|
|
|
static gint *subtree[]={
|
|
|
|
&lm_subtree
|
|
|
|
};
|
|
|
|
|
|
|
|
static hf_register_info hf[] = {
|
|
|
|
{ &lm_entity_id,
|
|
|
|
{ "Entity", "tei.entity", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
|
|
"Layer Management Entity Identifier", HFILL }},
|
|
|
|
|
|
|
|
{ &lm_reference,
|
|
|
|
{ "Reference", "tei.reference", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
|
|
"Reference Number", HFILL }},
|
|
|
|
|
|
|
|
{ &lm_message,
|
|
|
|
{ "Msg", "tei.msg", FT_UINT8, BASE_DEC, VALS(tei_msg_vals), 0x0,
|
|
|
|
"Message Type", HFILL }},
|
|
|
|
|
|
|
|
{ &lm_action,
|
|
|
|
{ "Action", "tei.action", FT_UINT8, BASE_DEC, NULL, 0xfe,
|
|
|
|
"Action Indicator", HFILL }},
|
|
|
|
|
|
|
|
{ &lm_extend,
|
|
|
|
{ "Extend", "tei.extend", FT_UINT8, BASE_DEC, NULL, 0x01,
|
|
|
|
"Extension Indicator", HFILL }}
|
|
|
|
};
|
|
|
|
|
|
|
|
proto_tei = proto_register_protocol("TEI Management Procedure, Channel D (LAPD)",
|
|
|
|
"TEI_MANAGEMENT", "tei_management");
|
|
|
|
proto_register_field_array (proto_tei, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(subtree, array_length(subtree));
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_reg_handoff_teimanagement(void)
|
|
|
|
{
|
|
|
|
dissector_handle_t teimanagement_handle;
|
|
|
|
|
|
|
|
teimanagement_handle = create_dissector_handle(dissect_teimanagement,
|
|
|
|
proto_tei);
|
|
|
|
dissector_add("lapd.sapi", LAPD_SAPI_L2, teimanagement_handle);
|
|
|
|
}
|