![Guy Harris](/assets/img/avatar_default.png)
arguments to "proto_tree_add_text()", and to "proto_tree_add_XXX()" calls that add FT_NONE or FT_PROTO items to the protocol tree, with -1. Replace some calls to "tvb_length()" or "tvb_length_remaining()" with calls to "tvb_reported_length()" and "tvb_reported_length_remaining()", as those give the actual length of the data in the packet, not just the data that happened to be captured. svn path=/trunk/; revision=4605
1017 lines
41 KiB
C
1017 lines
41 KiB
C
/* packet-iua.c
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* Routines for ISDN Q.921-User Adaptation Layer dissection
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* It is hopefully (needs testing) compilant to
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* http://www.ietf.org/internet-drafts/draft-ietf-sigtran-iua-10.txt
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* To do: - clean up the code
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* - provide better handling of length parameters
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* - think about making use of the existing Q.931 dissector
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*
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* Copyright 2000, Michael Tüxen <Michael.Tuexen@icn.siemens.de>
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*
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* $Id: packet-iua.c,v 1.13 2002/01/24 09:20:49 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* Copied from README.developer
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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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#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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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include <string.h>
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#include <glib.h>
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#ifdef NEED_SNPRINTF_H
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# include "snprintf.h"
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#endif
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#include <epan/packet.h>
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#define SCTP_PORT_IUA 9900
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#define IUA_PAYLOAD_PROTO_ID 1
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#define VERSION_LENGTH 1
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#define RESERVED_LENGTH 1
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#define MESSAGE_CLASS_LENGTH 1
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#define MESSAGE_TYPE_LENGTH 1
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#define MESSAGE_LENGTH_LENGTH 4
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#define COMMON_HEADER_LENGTH (VERSION_LENGTH + RESERVED_LENGTH + MESSAGE_CLASS_LENGTH + \
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MESSAGE_TYPE_LENGTH + MESSAGE_LENGTH_LENGTH)
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#define VERSION_OFFSET 0
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#define RESERVED_OFFSET (VERSION_OFFSET + VERSION_LENGTH)
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#define MESSAGE_CLASS_OFFSET (RESERVED_OFFSET + RESERVED_LENGTH)
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#define MESSAGE_TYPE_OFFSET (MESSAGE_CLASS_OFFSET + MESSAGE_CLASS_LENGTH)
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#define MESSAGE_LENGTH_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
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#define PROTOCOL_VERSION_RELEASE_1 1
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static const value_string iua_protocol_version_values[] = {
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{ PROTOCOL_VERSION_RELEASE_1, "Release 1" },
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{ 0, NULL } };
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#define MESSAGE_CLASS_MGMT_MESSAGE 0
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#define MESSAGE_CLASS_TFER_MESSAGE 1
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#define MESSAGE_CLASS_SSNM_MESSAGE 2
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#define MESSAGE_CLASS_ASPSM_MESSAGE 3
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#define MESSAGE_CLASS_ASPTM_MESSAGE 4
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#define MESSAGE_CLASS_QPTM_MESSAGE 5
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#define MESSAGE_CLASS_MAUP_MESSAGE 6
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#define MESSAGE_CLASS_CL_SUA_MESSAGE 7
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#define MESSAGE_CLASS_CO_SUA_MESSAGE 8
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static const value_string iua_message_class_values[] = {
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{ MESSAGE_CLASS_MGMT_MESSAGE, "Management messages" },
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{ MESSAGE_CLASS_TFER_MESSAGE, "Transfer messages" },
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{ MESSAGE_CLASS_SSNM_MESSAGE, "SS7 signalling network management messages" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE, "ASP state maintenance messages" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE, "ASP traffic maintenance messages" },
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{ MESSAGE_CLASS_QPTM_MESSAGE, "Q.921/Q.931 boundary primitive transport messages" },
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{ MESSAGE_CLASS_MAUP_MESSAGE, "MTP2 user adaptation messages" },
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{ MESSAGE_CLASS_CL_SUA_MESSAGE, "Connectionless messages (SUA)" },
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{ MESSAGE_CLASS_CO_SUA_MESSAGE, "Connection-oriented messages (SUA)" },
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{ 0, NULL } };
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/* message types for MGMT messages */
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#define MESSAGE_TYPE_ERR 0
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#define MESSAGE_TYPE_NTFY 1
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#define MESSAGE_TYPE_TEI_STATUS_REQ 2
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#define MESSAGE_TYPE_TEI_STATUS_CON 3
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#define MESSAGE_TYPE_TEI_STATUS_IND 4
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/* message types for ASPSM messages */
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#define MESSAGE_TYPE_UP 1
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#define MESSAGE_TYPE_DOWN 2
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#define MESSAGE_TYPE_BEAT 3
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#define MESSAGE_TYPE_UP_ACK 4
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#define MESSAGE_TYPE_DOWN_ACK 5
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#define MESSAGE_TYPE_BEAT_ACK 6
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/* message types for ASPTM messages */
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#define MESSAGE_TYPE_ACTIVE 1
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#define MESSAGE_TYPE_INACTIVE 2
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#define MESSAGE_TYPE_ACTIVE_ACK 3
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#define MESSAGE_TYPE_INACTIVE_ACK 4
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/* message types for QPTM messages */
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#define MESSAGE_TYPE_DATA_REQUEST 1
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#define MESSAGE_TYPE_DATA_INDICATION 2
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#define MESSAGE_TYPE_UNIT_DATA_REQUEST 3
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#define MESSAGE_TYPE_UNIT_DATA_INDICATION 4
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#define MESSAGE_TYPE_ESTABLISH_REQUEST 5
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#define MESSAGE_TYPE_ESTABLISH_CONFIRM 6
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#define MESSAGE_TYPE_ESTABLISH_INDICATION 7
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#define MESSAGE_TYPE_RELEASE_REQUEST 8
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#define MESSAGE_TYPE_RELEASE_CONFIRM 9
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#define MESSAGE_TYPE_RELEASE_INDICATION 10
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static const value_string iua_message_class_type_values[] = {
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "Error" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "Notify" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_REQ, "TEI status request" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_CON, "TEI status confirmation" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_IND, "TEI status indication" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP up" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP down" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "Heartbeat" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP up ack" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP down ack" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "Heartbeat ack" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP active" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP inactive" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP active ack" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "Data request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "Data indication" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_REQUEST, "Unit data request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_INDICATION, "Unit data indication" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "Establish request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "Establish indication" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "Release request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "Release confirmation" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "Release indication" },
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{ 0, NULL } };
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static const value_string iua_message_class_type_acro_values[] = {
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "ERR" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "NTFY" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_REQ, "TEI_STAT_REQ" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_CON, "TEI_STAT_CON" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_IND, "TEI_STAT_IND" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP_UP" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP_DOWN" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "BEAT" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP_UP_ACK" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP_DOWN_ACK" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "BEAT_ACK" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP_ACTIVE" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP_INACTIVE" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP_ACTIVE_ACK" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP_INACTIVE_ACK" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "DATA_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "DATA_IND" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_REQUEST, "U_DATA_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_INDICATION, "U_DATA_IND" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "EST_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "EST_CON" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "EST_IND" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "REL_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "REL_CON" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "REL_IND" },
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{ 0, NULL } };
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#define PARAMETER_TAG_LENGTH 2
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#define PARAMETER_LENGTH_LENGTH 2
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#define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
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#define PARAMETER_TAG_OFFSET 0
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#define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
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#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
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#define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
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#define INT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x01
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#define TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x03
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#define INFO_PARAMETER_TAG 0x04
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#define DLCI_PARAMETER_TAG 0x05
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#define DIAGNOSTIC_INFORMATION_PARAMETER_TAG 0x07
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#define INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x08
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#define HEARTBEAT_DATA_PARAMETER_TAG 0x09
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#define ASP_REASON_PARAMETER_TAG 0x0a
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#define TRAFFIC_MODE_TYPE_PARAMETER_TAG 0x0b
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#define ERROR_CODE_PARAMETER_TAG 0x0c
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#define STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG 0x0d
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#define PROTOCOL_DATA_PARAMETER_TAG 0x0e
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#define RELEASE_REASON_PARAMETER_TAG 0x0f
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#define TEI_STATUS_PARAMETER_TAG 0x10
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static const value_string iua_parameter_tag_values[] = {
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{ INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer interface identifier" },
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{ TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Text interface identifier" },
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{ INFO_PARAMETER_TAG, "Info" },
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{ DLCI_PARAMETER_TAG, "DLCI" },
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{ DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" },
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{ INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer range interface identifier" },
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{ HEARTBEAT_DATA_PARAMETER_TAG, "Hearbeat data" },
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{ ASP_REASON_PARAMETER_TAG, "Reason" },
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{ TRAFFIC_MODE_TYPE_PARAMETER_TAG, "Traffic mode type" },
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{ ERROR_CODE_PARAMETER_TAG, "Error code" },
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{ STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG, "Status type/identification" },
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{ PROTOCOL_DATA_PARAMETER_TAG, "Protocol data" },
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{ RELEASE_REASON_PARAMETER_TAG, "Reason" },
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{ TEI_STATUS_PARAMETER_TAG, "TEI status" },
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{ 0, NULL } };
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#define INT_INTERFACE_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
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#define INT_INTERFACE_IDENTIFIER_LENGTH 4
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#define TEXT_INTERFACE_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
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#define TEXT_INTERFACE_IDENTIFIER_LENGTH 4
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#define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
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#define START_LENGTH 4
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#define END_LENGTH 4
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#define START_OFFSET 0
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#define END_OFFSET (START_OFFSET + START_LENGTH)
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#define DLCI_LENGTH 2
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#define DLCI_OFFSET PARAMETER_VALUE_OFFSET
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#define ZERO_BIT_MASK 0x80
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#define SPARE_BIT_MASK 0x40
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#define SAPI_MASK 0x3f
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#define ONE_BIT_MASK 0x80
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#define TEI_MASK 0x7f
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#define ASP_MGMT_REASON 1
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static const value_string iua_asp_reason_values[] = {
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{ ASP_MGMT_REASON, "Management inhibit" },
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{ 0, NULL } };
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#define ASP_REASON_LENGTH 4
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#define ASP_REASON_OFFSET PARAMETER_VALUE_OFFSET
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#define OVER_RIDE_TRAFFIC_MODE_TYPE 1
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#define LOAD_SHARE_TRAFFIC_MODE_TYPE 2
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static const value_string iua_traffic_mode_type_values[] = {
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{ OVER_RIDE_TRAFFIC_MODE_TYPE, "Over-ride" },
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{ LOAD_SHARE_TRAFFIC_MODE_TYPE, "Load-share" },
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{ 0, NULL } };
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#define TRAFFIC_MODE_TYPE_LENGTH 4
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#define TRAFFIC_MODE_TYPE_OFFSET PARAMETER_VALUE_OFFSET
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#define INVALID_VERSION_ERROR 0x01
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#define INVALID_INTERFACE_IDENTIFIER_ERROR 0x02
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#define UNSUPPORTED_MESSAGE_CLASS_ERROR 0x03
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#define UNSUPPORTED_MESSAGE_TYPE_ERROR 0x04
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#define UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR 0x05
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#define UNEXPECTED_MESSAGE_ERROR 0x06
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#define PROTOCOL_ERROR 0x07
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#define UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR 0x08
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#define INVALID_STREAM_IDENTIFIER_ERROR 0x09
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#define UNASSIGNED_TEI_ERROR 0x0a
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#define UNRECOGNIZED_SAPI_ERROR 0x0b
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#define INVALID_TEI_SAPI_COMBINATION 0x0c
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static const value_string iua_error_code_values[] = {
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{ INVALID_VERSION_ERROR, "Invalid version" },
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{ INVALID_INTERFACE_IDENTIFIER_ERROR, "Invalid interface identifier" },
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{ UNSUPPORTED_MESSAGE_CLASS_ERROR, "Unsuported message class" },
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{ UNSUPPORTED_MESSAGE_TYPE_ERROR, "Unsupported message type" },
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{ UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR, "Unsupported traffic handling mode" },
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{ UNEXPECTED_MESSAGE_ERROR, "Unexpected message" },
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{ PROTOCOL_ERROR, "Protocol error" },
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{ UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR, "Unsupported interface identifier type" },
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{ INVALID_STREAM_IDENTIFIER_ERROR, "Invalid stream identifier" },
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{ UNASSIGNED_TEI_ERROR, "Unassigned TEI" },
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{ UNRECOGNIZED_SAPI_ERROR, "Unrecognized SAPI" },
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{ INVALID_TEI_SAPI_COMBINATION, "Invalid TEI/SAPI combination" },
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{ 0, NULL } };
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#define ERROR_CODE_LENGTH 4
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#define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
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#define ASP_STATE_CHANGE_STATUS_TYPE 0x01
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#define OTHER_STATUS_TYPE 0x02
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static const value_string iua_status_type_values[] = {
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{ ASP_STATE_CHANGE_STATUS_TYPE, "Application server state change" },
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{ OTHER_STATUS_TYPE, "Other" },
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{ 0, NULL } };
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#define AS_DOWN_STATUS_IDENT 0x01
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#define AS_INACTIVE_STATUS_IDENT 0x02
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#define AS_ACTIVE_STATUS_IDENT 0x03
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#define AS_PENDING_STATUS_IDENT 0x04
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#define INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT 0x01
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#define ALTERNATE_ASP_ACTIVE_STATUS_IDENT 0x02
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static const value_string iua_status_type_ident_values[] = {
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{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_DOWN_STATUS_IDENT, "Application server down" },
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{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_INACTIVE_STATUS_IDENT, "Application server inactive" },
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{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_ACTIVE_STATUS_IDENT, "Application server active" },
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{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_PENDING_STATUS_IDENT, "Application server pending" },
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{ OTHER_STATUS_TYPE * 256 * 256 + INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT, "Insufficient ASP resources active in AS" },
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{ OTHER_STATUS_TYPE * 256 * 256 + ALTERNATE_ASP_ACTIVE_STATUS_IDENT, "Alternate ASP active" },
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{ 0, NULL } };
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#define STATUS_TYPE_LENGTH 2
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#define STATUS_IDENT_LENGTH 2
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#define STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET
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#define STATUS_IDENT_OFFSET (STATUS_TYPE_OFFSET + STATUS_TYPE_LENGTH)
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#define PROTOCOL_DATA_OFFSET PARAMETER_VALUE_OFFSET
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#define RELEASE_MGMT_REASON 0
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#define RELEASE_PHYS_REASON 1
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#define RELEASE_DM_REASON 2
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#define RELEASE_OTHER_REASON 4
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static const value_string iua_release_reason_values[] = {
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{ RELEASE_MGMT_REASON, "Management layer generated release" },
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{ RELEASE_PHYS_REASON, "Physical layer alarm generated release" },
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{ RELEASE_DM_REASON, "Layer 2 should release" },
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{ RELEASE_OTHER_REASON, "Other reason" },
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{ 0, NULL } };
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#define RELEASE_REASON_OFFSET PARAMETER_VALUE_OFFSET
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#define RELEASE_REASON_LENGTH 4
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#define TEI_STATUS_ASSIGNED 0
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#define TEI_STATUS_UNASSIGNED 1
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|
|
static const value_string iua_tei_status_values[] = {
|
|
{ TEI_STATUS_ASSIGNED, "TEI is considered assigned by Q.921" },
|
|
{ TEI_STATUS_UNASSIGNED, "TEI is considered unassigned by Q.921" },
|
|
{ 0, NULL } };
|
|
|
|
#define TEI_STATUS_LENGTH 4
|
|
#define TEI_STATUS_OFFSET PARAMETER_VALUE_OFFSET
|
|
|
|
/* Initialize the protocol and registered fields */
|
|
static int proto_iua = -1;
|
|
static int hf_iua_version = -1;
|
|
static int hf_iua_reserved = -1;
|
|
static int hf_iua_message_class = -1;
|
|
static int hf_iua_message_type = -1;
|
|
static int hf_iua_message_length = -1;
|
|
static int hf_iua_parameter_tag = -1;
|
|
static int hf_iua_parameter_length = -1;
|
|
static int hf_iua_int_interface_identifier = -1;
|
|
static int hf_iua_text_interface_identifier = -1;
|
|
static int hf_iua_info_string = -1;
|
|
static int hf_iua_interface_range_start = -1;
|
|
static int hf_iua_interface_range_end = -1;
|
|
static int hf_iua_zero_bit = -1;
|
|
static int hf_iua_spare_bit = -1;
|
|
static int hf_iua_sapi = -1;
|
|
static int hf_iua_one_bit = -1;
|
|
static int hf_iua_tei = -1;
|
|
static int hf_iua_status_type = -1;
|
|
static int hf_iua_status_ident = -1;
|
|
static int hf_iua_release_reason = -1;
|
|
static int hf_iua_traffic_mode_type = -1;
|
|
static int hf_iua_error_code = -1;
|
|
static int hf_iua_asp_reason = -1;
|
|
static int hf_iua_tei_status = -1;
|
|
|
|
/* Initialize the subtree pointers */
|
|
static gint ett_iua = -1;
|
|
static gint ett_iua_parameter = -1;
|
|
static gint ett_iua_dlci = -1;
|
|
static gint ett_iua_range = -1;
|
|
|
|
static guint
|
|
nr_of_padding_bytes (guint length)
|
|
{
|
|
guint remainder;
|
|
|
|
remainder = length % 4;
|
|
|
|
if (remainder == 0)
|
|
return 0;
|
|
else
|
|
return 4 - remainder;
|
|
}
|
|
|
|
static void
|
|
dissect_iua_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *iua_tree)
|
|
{
|
|
guint8 version, reserved, message_class, message_type;
|
|
guint32 message_length;
|
|
|
|
/* Extract the common header */
|
|
version = tvb_get_guint8(common_header_tvb, VERSION_OFFSET);
|
|
reserved = tvb_get_guint8(common_header_tvb, RESERVED_OFFSET);
|
|
message_class = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
|
|
message_type = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
|
|
message_length = tvb_get_ntohl (common_header_tvb, MESSAGE_LENGTH_OFFSET);
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_append_str(pinfo->cinfo, COL_INFO, val_to_str(message_class * 256 + message_type, iua_message_class_type_acro_values, "UNKNOWN"));
|
|
col_append_str(pinfo->cinfo, COL_INFO, " ");
|
|
};
|
|
|
|
if (iua_tree) {
|
|
/* add the components of the common header to the protocol tree */
|
|
proto_tree_add_uint_format(iua_tree, hf_iua_version,
|
|
common_header_tvb, VERSION_OFFSET, VERSION_LENGTH,
|
|
version, "Version: %u (%s)",
|
|
version, val_to_str(version, iua_protocol_version_values, "unknown"));
|
|
proto_tree_add_uint(iua_tree, hf_iua_reserved,
|
|
common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH,
|
|
reserved);
|
|
proto_tree_add_uint_format(iua_tree, hf_iua_message_class,
|
|
common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH,
|
|
message_class, "Message class: %u (%s)",
|
|
message_class, val_to_str(message_class, iua_message_class_values, "reserved"));
|
|
proto_tree_add_uint_format(iua_tree, hf_iua_message_type,
|
|
common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH,
|
|
message_type, "Message type: %u (%s)",
|
|
message_type, val_to_str(message_class * 256 + message_type, iua_message_class_type_values, "reserved"));
|
|
proto_tree_add_uint(iua_tree, hf_iua_message_length,
|
|
common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH,
|
|
message_length);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_iua_int_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint32 interface_identifier;
|
|
|
|
interface_identifier = tvb_get_ntohl(parameter_tvb, INT_INTERFACE_IDENTIFIER_OFFSET);
|
|
|
|
proto_tree_add_uint(parameter_tree, hf_iua_int_interface_identifier,
|
|
parameter_tvb, INT_INTERFACE_IDENTIFIER_OFFSET, INT_INTERFACE_IDENTIFIER_LENGTH,
|
|
interface_identifier);
|
|
|
|
proto_item_set_text(parameter_item, "Integer interface identifier (%u)", interface_identifier);
|
|
}
|
|
|
|
static void
|
|
dissect_iua_text_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 length, interface_identifier_length;
|
|
char *interface_identifier;
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
interface_identifier_length = length - PARAMETER_HEADER_LENGTH;
|
|
interface_identifier = (char *)tvb_get_ptr(parameter_tvb, TEXT_INTERFACE_IDENTIFIER_OFFSET, interface_identifier_length);
|
|
|
|
proto_tree_add_string(parameter_tree, hf_iua_text_interface_identifier,
|
|
parameter_tvb, TEXT_INTERFACE_IDENTIFIER_OFFSET, interface_identifier_length ,
|
|
interface_identifier);
|
|
|
|
proto_item_set_text(parameter_item, "Text interface identifier (%s)", interface_identifier);
|
|
}
|
|
|
|
static void
|
|
dissect_iua_info_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 length, info_string_length;
|
|
char *info_string;
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
info_string_length = length - PARAMETER_HEADER_LENGTH;
|
|
info_string = (char *)tvb_get_ptr(parameter_tvb, INFO_STRING_OFFSET, info_string_length);
|
|
|
|
proto_tree_add_string(parameter_tree, hf_iua_info_string,
|
|
parameter_tvb, INFO_STRING_OFFSET, info_string_length ,
|
|
info_string);
|
|
|
|
proto_item_set_text(parameter_item, "Info String (%s)", info_string);
|
|
}
|
|
|
|
static void
|
|
dissect_iua_dlci_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 dlci;
|
|
proto_item *dlci_item;
|
|
proto_tree *dlci_tree;
|
|
|
|
dlci = tvb_get_ntohs(parameter_tvb, DLCI_OFFSET);
|
|
dlci_item = proto_tree_add_text(parameter_tree, parameter_tvb, DLCI_OFFSET, DLCI_LENGTH, "DLCI");
|
|
dlci_tree = proto_item_add_subtree(dlci_item, ett_iua_dlci);
|
|
|
|
proto_tree_add_boolean(dlci_tree, hf_iua_zero_bit, parameter_tvb, DLCI_OFFSET, 1, dlci);
|
|
proto_tree_add_boolean(dlci_tree, hf_iua_spare_bit, parameter_tvb, DLCI_OFFSET, 1, dlci);
|
|
proto_tree_add_uint(dlci_tree, hf_iua_sapi, parameter_tvb, DLCI_OFFSET, 1, dlci);
|
|
proto_tree_add_boolean(dlci_tree, hf_iua_one_bit, parameter_tvb, DLCI_OFFSET+1, 1, dlci);
|
|
proto_tree_add_uint(dlci_tree, hf_iua_tei, parameter_tvb, DLCI_OFFSET+1, 1, dlci);
|
|
|
|
proto_item_set_text(parameter_item, "DLCI");
|
|
}
|
|
|
|
static void
|
|
dissect_iua_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 length, diagnostic_info_length;
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
diagnostic_info_length = length - PARAMETER_HEADER_LENGTH;
|
|
|
|
proto_tree_add_text(parameter_tree, parameter_tvb, PARAMETER_VALUE_OFFSET, diagnostic_info_length,
|
|
"Diagnostic information (%u byte%s)",
|
|
diagnostic_info_length, plurality(diagnostic_info_length, "", "s"));
|
|
|
|
proto_item_set_text(parameter_item, "Diagnostic information (%u byte%s)",
|
|
diagnostic_info_length, plurality(diagnostic_info_length, "", "s"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_integer_range_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 length, number_of_ranges, range_number;
|
|
guint32 start, end;
|
|
gint offset;
|
|
|
|
proto_item *range_item;
|
|
proto_tree *range_tree;
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
number_of_ranges = (length - PARAMETER_HEADER_LENGTH) / (2 * 4);
|
|
|
|
offset = PARAMETER_VALUE_OFFSET;
|
|
for(range_number = 1; range_number <= number_of_ranges; range_number++) {
|
|
start = tvb_get_ntohl(parameter_tvb, offset + START_OFFSET);
|
|
end = tvb_get_ntohl(parameter_tvb, offset + END_OFFSET);
|
|
range_item = proto_tree_add_text(parameter_tree, parameter_tvb,
|
|
offset + START_OFFSET, START_LENGTH + END_LENGTH,
|
|
"Integer interface range: %u - %u",
|
|
start, end);
|
|
range_tree = proto_item_add_subtree(range_item, ett_iua_range);
|
|
proto_tree_add_uint(range_tree, hf_iua_interface_range_start,
|
|
parameter_tvb,
|
|
offset + START_OFFSET, START_LENGTH,
|
|
start);
|
|
proto_tree_add_uint(range_tree, hf_iua_interface_range_end,
|
|
parameter_tvb,
|
|
offset + END_OFFSET, END_LENGTH,
|
|
end);
|
|
offset += START_LENGTH + END_LENGTH;
|
|
};
|
|
|
|
proto_item_set_text(parameter_item, "Integer interface identifier (%u range%s)",
|
|
number_of_ranges, plurality(number_of_ranges, "", "s"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 length, heartbeat_data_length;
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
heartbeat_data_length = length - PARAMETER_HEADER_LENGTH;
|
|
|
|
proto_tree_add_text(parameter_tree, parameter_tvb, PARAMETER_VALUE_OFFSET, heartbeat_data_length,
|
|
"Heartbeat data (%u byte%s)",
|
|
heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
|
|
|
|
proto_item_set_text(parameter_item, "Heartbeat data (%u byte%s)",
|
|
heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_asp_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint32 reason;
|
|
|
|
reason = tvb_get_ntohl(parameter_tvb, ASP_REASON_OFFSET);
|
|
|
|
proto_tree_add_uint_format(parameter_tree, hf_iua_asp_reason,
|
|
parameter_tvb, ASP_REASON_OFFSET, ASP_REASON_LENGTH,
|
|
reason, "Reason: %u (%s)",
|
|
reason, val_to_str(reason, iua_asp_reason_values, "unknown"));
|
|
|
|
proto_item_set_text(parameter_item, "Reason (%s)", val_to_str(reason, iua_asp_reason_values, "unknown"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint32 traffic_mode_type;
|
|
|
|
traffic_mode_type = tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET);
|
|
|
|
proto_tree_add_uint_format(parameter_tree, hf_iua_traffic_mode_type,
|
|
parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH,
|
|
traffic_mode_type, "Traffic mode type: %u (%s)",
|
|
traffic_mode_type, val_to_str(traffic_mode_type, iua_traffic_mode_type_values, "unknown"));
|
|
|
|
proto_item_set_text(parameter_item, "Traffic mode type (%s)",
|
|
val_to_str(traffic_mode_type, iua_traffic_mode_type_values, "unknown"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint32 error_code;
|
|
|
|
error_code = tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET);
|
|
proto_tree_add_uint_format(parameter_tree, hf_iua_error_code,
|
|
parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH,
|
|
error_code, "Error code: %u (%s)",
|
|
error_code, val_to_str(error_code, iua_error_code_values, "unknown"));
|
|
proto_item_set_text(parameter_item, "Error code (%s)",
|
|
val_to_str(error_code, iua_error_code_values, "unknown"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_status_type_identification_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 status_type, status_ident;
|
|
|
|
status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
|
|
status_ident = tvb_get_ntohs(parameter_tvb, STATUS_IDENT_OFFSET);
|
|
|
|
proto_tree_add_uint_format(parameter_tree, hf_iua_status_type,
|
|
parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH,
|
|
status_type, "Status type: %u (%s)",
|
|
status_type, val_to_str(status_type, iua_status_type_values, "unknown"));
|
|
proto_tree_add_uint_format(parameter_tree, hf_iua_status_ident,
|
|
parameter_tvb, STATUS_IDENT_OFFSET, STATUS_IDENT_LENGTH,
|
|
status_ident, "Status identification: %u (%s)",
|
|
status_ident, val_to_str(status_type * 256 * 256 +
|
|
status_ident, iua_status_type_ident_values, "unknown"));
|
|
|
|
proto_item_set_text(parameter_item, "Status type / status identification (%s)",
|
|
val_to_str(status_type * 256 * 256 +
|
|
status_ident, iua_status_type_ident_values, "unknown status information"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_protocol_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 length, protocol_data_length;
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
protocol_data_length = length - PARAMETER_HEADER_LENGTH;
|
|
|
|
proto_tree_add_text(parameter_tree, parameter_tvb, PROTOCOL_DATA_OFFSET, protocol_data_length,
|
|
"Protocol data (%u byte%s)",
|
|
protocol_data_length, plurality(protocol_data_length, "", "s"));
|
|
|
|
proto_item_set_text(parameter_item, "Protocol data (%u byte%s)",
|
|
protocol_data_length, plurality(protocol_data_length, "", "s"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_release_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint32 reason;
|
|
|
|
reason = tvb_get_ntohl(parameter_tvb, RELEASE_REASON_OFFSET);
|
|
|
|
proto_tree_add_uint_format(parameter_tree, hf_iua_release_reason,
|
|
parameter_tvb, RELEASE_REASON_OFFSET, RELEASE_REASON_LENGTH,
|
|
reason, "Reason: %u (%s)",
|
|
reason, val_to_str(reason, iua_release_reason_values, "unknown"));
|
|
|
|
proto_item_set_text(parameter_item, "Reason (%s)", val_to_str(reason, iua_release_reason_values, "unknown"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_tei_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint32 status;
|
|
|
|
status = tvb_get_ntohl(parameter_tvb, TEI_STATUS_OFFSET);
|
|
|
|
proto_tree_add_uint_format(parameter_tree, hf_iua_release_reason,
|
|
parameter_tvb, TEI_STATUS_OFFSET, TEI_STATUS_LENGTH,
|
|
status, "TEI status: %u (%s)",
|
|
status, val_to_str(status, iua_tei_status_values, "unknown"));
|
|
|
|
proto_item_set_text(parameter_item, "TEI status (%s)", val_to_str(status, iua_tei_status_values, "unknown"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 tag, length, parameter_value_length;
|
|
|
|
tag = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
parameter_value_length = length - PARAMETER_HEADER_LENGTH;
|
|
|
|
proto_tree_add_text(parameter_tree, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length,
|
|
"Parameter value (%u byte%s)",
|
|
parameter_value_length, plurality(parameter_value_length, "", "s"));
|
|
|
|
proto_item_set_text(parameter_item, "Parameter with tag %u and %u byte%s value",
|
|
tag, parameter_value_length, plurality(parameter_value_length, "", "s"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_parameter(tvbuff_t *parameter_tvb, proto_tree *iua_tree)
|
|
{
|
|
guint16 tag, length, padding_length, total_length;
|
|
proto_item *parameter_item;
|
|
proto_tree *parameter_tree;
|
|
|
|
/* extract tag and length from the parameter */
|
|
tag = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
/* calculate padding and total length */
|
|
padding_length = nr_of_padding_bytes(length);
|
|
total_length = length + padding_length;
|
|
|
|
/* create proto_tree stuff */
|
|
parameter_item = proto_tree_add_text(iua_tree, parameter_tvb,
|
|
PARAMETER_HEADER_OFFSET, total_length, "Incomplete parameter");
|
|
parameter_tree = proto_item_add_subtree(parameter_item, ett_iua_parameter);
|
|
|
|
/* add tag and length to the m3ua tree */
|
|
proto_tree_add_uint_format(parameter_tree, hf_iua_parameter_tag,
|
|
parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH,
|
|
tag, "Identifier: %u (%s)",
|
|
tag, val_to_str(tag, iua_parameter_tag_values, "unknown"));
|
|
proto_tree_add_uint(parameter_tree, hf_iua_parameter_length,
|
|
parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH,
|
|
length);
|
|
|
|
switch(tag) {
|
|
case INT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
|
|
dissect_iua_int_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
|
|
dissect_iua_text_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case INFO_PARAMETER_TAG:
|
|
dissect_iua_info_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case DLCI_PARAMETER_TAG:
|
|
dissect_iua_dlci_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
|
|
dissect_iua_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG:
|
|
dissect_iua_integer_range_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case HEARTBEAT_DATA_PARAMETER_TAG:
|
|
dissect_iua_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case ASP_REASON_PARAMETER_TAG:
|
|
dissect_iua_asp_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case TRAFFIC_MODE_TYPE_PARAMETER_TAG:
|
|
dissect_iua_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case ERROR_CODE_PARAMETER_TAG:
|
|
dissect_iua_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG:
|
|
dissect_iua_status_type_identification_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case PROTOCOL_DATA_PARAMETER_TAG:
|
|
dissect_iua_protocol_data_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case RELEASE_REASON_PARAMETER_TAG:
|
|
dissect_iua_release_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case TEI_STATUS_PARAMETER_TAG:
|
|
dissect_iua_tei_status_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
default:
|
|
dissect_iua_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
};
|
|
|
|
if (padding_length > 0)
|
|
proto_tree_add_text(parameter_tree, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length,
|
|
"Padding: %u byte%s",
|
|
padding_length, plurality(padding_length, "", "s"));
|
|
}
|
|
|
|
static void
|
|
dissect_iua_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *iua_tree)
|
|
{
|
|
gint offset, length, padding_length, total_length;
|
|
tvbuff_t *common_header_tvb, *parameter_tvb;
|
|
|
|
offset = 0;
|
|
|
|
/* extract and process the common header */
|
|
common_header_tvb = tvb_new_subset(message_tvb, offset, COMMON_HEADER_LENGTH, COMMON_HEADER_LENGTH);
|
|
dissect_iua_common_header(common_header_tvb, pinfo, iua_tree);
|
|
offset += COMMON_HEADER_LENGTH;
|
|
|
|
if (iua_tree) {
|
|
/* extract zero or more parameters and process them individually */
|
|
while(tvb_reported_length_remaining(message_tvb, offset)) {
|
|
length = tvb_get_ntohs(message_tvb, offset + PARAMETER_LENGTH_OFFSET);
|
|
padding_length = nr_of_padding_bytes(length);
|
|
total_length = length + padding_length;
|
|
/* create a tvb for the parameter including the padding bytes */
|
|
parameter_tvb = tvb_new_subset(message_tvb, offset, total_length, total_length);
|
|
dissect_iua_parameter(parameter_tvb, iua_tree);
|
|
/* get rid of the handled parameter */
|
|
offset += total_length;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_iua(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *iua_item;
|
|
proto_tree *iua_tree;
|
|
|
|
/* make entry in the Protocol column on summary display */
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "IUA");
|
|
|
|
/* In the interest of speed, if "tree" is NULL, don't do any work not
|
|
necessary to generate protocol tree items. */
|
|
if (tree) {
|
|
/* create the m3ua protocol tree */
|
|
iua_item = proto_tree_add_item(tree, proto_iua, message_tvb, 0, -1, FALSE);
|
|
iua_tree = proto_item_add_subtree(iua_item, ett_iua);
|
|
} else {
|
|
iua_tree = NULL;
|
|
};
|
|
/* dissect the message */
|
|
dissect_iua_message(message_tvb, pinfo, iua_tree);
|
|
}
|
|
|
|
/* Register the protocol with Ethereal */
|
|
void
|
|
proto_register_iua(void)
|
|
{
|
|
|
|
/* Setup list of header fields */
|
|
static hf_register_info hf[] = {
|
|
{ &hf_iua_version,
|
|
{ "Version", "iua.version",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_reserved,
|
|
{ "Reserved", "iua.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_message_class,
|
|
{ "Message class", "iua.message_class",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_message_type,
|
|
{ "Message Type", "iua.message_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_message_length,
|
|
{ "Message length", "iua.message_length",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_parameter_tag,
|
|
{ "Parameter Tag", "iua.parameter_tag",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_parameter_length,
|
|
{ "Parameter length", "iua.parameter_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_int_interface_identifier,
|
|
{ "Integer interface identifier", "iua.int_interface_identifier",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_text_interface_identifier,
|
|
{ "Text interface identifier", "iua.text_interface_identifier",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_spare_bit,
|
|
{ "Spare bit", "iua.spare_bit",
|
|
FT_BOOLEAN, 8, NULL, SPARE_BIT_MASK,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_sapi,
|
|
{ "SAPI", "iua.sapi",
|
|
FT_UINT8, BASE_HEX, NULL, SAPI_MASK,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_zero_bit,
|
|
{ "Zero bit", "iua.zero_bit",
|
|
FT_BOOLEAN, 8, NULL, ZERO_BIT_MASK,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_one_bit,
|
|
{ "One bit", "iua.one_bit",
|
|
FT_BOOLEAN, 8, NULL, ONE_BIT_MASK,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_tei,
|
|
{ "TEI", "iua.tei",
|
|
FT_UINT8, BASE_HEX, NULL, TEI_MASK,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_info_string,
|
|
{ "Info string", "iua.info_string",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_interface_range_start,
|
|
{ "Start", "iua.interface_range_start",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_interface_range_end,
|
|
{ "End", "iua.interface_range_end",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_release_reason,
|
|
{ "Reason", "iua.release_reason",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_status_type,
|
|
{ "Status type", "iua.status_type",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_status_ident,
|
|
{ "Status identification", "iua.status_identification",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_traffic_mode_type,
|
|
{ "Traffic mode type", "iua.traffic_mode_type",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_error_code,
|
|
{ "Error code", "iua.error_code",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_asp_reason,
|
|
{ "Reason", "iua.asp_reason",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_iua_tei_status,
|
|
{ "TEI status", "iua.tei_status",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }
|
|
},
|
|
};
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_iua,
|
|
&ett_iua_parameter,
|
|
&ett_iua_dlci,
|
|
&ett_iua_range,
|
|
};
|
|
|
|
/* Register the protocol name and description */
|
|
proto_iua = proto_register_protocol("ISDN Q.921-User Adaptation Layer",
|
|
"IUA", "iua");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_iua, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
};
|
|
|
|
void
|
|
proto_reg_handoff_iua(void)
|
|
{
|
|
dissector_handle_t iua_handle;
|
|
|
|
iua_handle = create_dissector_handle(dissect_iua, proto_iua);
|
|
dissector_add("sctp.port", SCTP_PORT_IUA, iua_handle);
|
|
dissector_add("sctp.ppi", IUA_PAYLOAD_PROTO_ID, iua_handle);
|
|
}
|