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wireshark/packet-iua.c
Guy Harris 32d63ecb30 Remove more "CHECK_DISPLAY_AS_DATA()" calls and "pinfo->current_proto =" 
statements.

Move the setting of the Protocol column in various dissectors before
anything is fetched from the packet, and also clear the Info column at
that point in those and some other dissectors, so that if an exception
is thrown, the columns don't reflect the previous protocol.

"Tvbuffify" the Mobile IP dissector (it took old-style arguments, and
then converted them into tvbuff arguments, so there wasn't much to do,
other than to fix references to "fd" to refer to "pinfo->fd").

In the SCTP dissector, refer to the port type and source and destination
ports through "pinfo" rather than through the global "pi", as it's a
tvbuffified dissector.

In the SMTP and Time Protocol dissectors, use "pinfo->match_port" rather
than "TCP_PORT_SMTP" when checking whether the packet is a request or
reply, just in case somebody makes a non-standard port be dissected as
SMTP or Time.  (Also, remove a bogus comment from the Time dissector; it
was probably cut-and-pasted from the TFTP dissector.)

svn path=/trunk/; revision=2938
2001-01-25 06:14:14 +00:00

1016 lines
41 KiB
C
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/* packet-iua.c
* Routines for ISDN Q.921-User Adaptation Layer dissection
* It is hopefully (needs testing) compilant to
* http://www.ietf.org/internet-drafts/draft-ietf-sigtran-iua-10.txt
* To do: - clean up the code
* - provide better handling of length parameters
* - think about making use of the existing Q.931 dissector
*
* Copyright 2000, Michael Tüxen <Michael.Tuexen@icn.siemens.de>
*
* $Id: packet-iua.c,v 1.4 2001/01/25 06:14:14 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@unicom.net>
* Copyright 1998 Gerald Combs
*
* Copied from README.developer
*
* 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 <stdlib.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#include <string.h>
#include <glib.h>
#ifdef NEED_SNPRINTF_H
# include "snprintf.h"
#endif
#include "packet.h"
#include "packet-ip.h"
#define SCTP_PORT_IUA 9900
#define IUA_PAYLOAD_PROTO_ID 1
#define VERSION_LENGTH 1
#define RESERVED_LENGTH 1
#define MESSAGE_CLASS_LENGTH 1
#define MESSAGE_TYPE_LENGTH 1
#define MESSAGE_LENGTH_LENGTH 4
#define COMMON_HEADER_LENGTH (VERSION_LENGTH + RESERVED_LENGTH + MESSAGE_CLASS_LENGTH + \
MESSAGE_TYPE_LENGTH + MESSAGE_LENGTH_LENGTH)
#define VERSION_OFFSET 0
#define RESERVED_OFFSET (VERSION_OFFSET + VERSION_LENGTH)
#define MESSAGE_CLASS_OFFSET (RESERVED_OFFSET + RESERVED_LENGTH)
#define MESSAGE_TYPE_OFFSET (MESSAGE_CLASS_OFFSET + MESSAGE_CLASS_LENGTH)
#define MESSAGE_LENGTH_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
#define PROTOCOL_VERSION_RELEASE_1 1
static const value_string iua_protocol_version_values[] = {
{ PROTOCOL_VERSION_RELEASE_1, "Release 1" },
{ 0, NULL } };
#define MESSAGE_CLASS_MGMT_MESSAGE 0
#define MESSAGE_CLASS_TFER_MESSAGE 1
#define MESSAGE_CLASS_SSNM_MESSAGE 2
#define MESSAGE_CLASS_ASPSM_MESSAGE 3
#define MESSAGE_CLASS_ASPTM_MESSAGE 4
#define MESSAGE_CLASS_QPTM_MESSAGE 5
#define MESSAGE_CLASS_MAUP_MESSAGE 6
#define MESSAGE_CLASS_CL_SUA_MESSAGE 7
#define MESSAGE_CLASS_CO_SUA_MESSAGE 8
static const value_string iua_message_class_values[] = {
{ MESSAGE_CLASS_MGMT_MESSAGE, "Management messages" },
{ MESSAGE_CLASS_TFER_MESSAGE, "Transfer messages" },
{ MESSAGE_CLASS_SSNM_MESSAGE, "SS7 signalling network management messages" },
{ MESSAGE_CLASS_ASPSM_MESSAGE, "ASP state maintenance messages" },
{ MESSAGE_CLASS_ASPTM_MESSAGE, "ASP traffic maintenance messages" },
{ MESSAGE_CLASS_QPTM_MESSAGE, "Q.921/Q.931 boundary primitive transport messages" },
{ MESSAGE_CLASS_MAUP_MESSAGE, "MTP2 user adaptation messages" },
{ MESSAGE_CLASS_CL_SUA_MESSAGE, "Connectionless messages (SUA)" },
{ MESSAGE_CLASS_CO_SUA_MESSAGE, "Connection-oriented messages (SUA)" },
{ 0, NULL } };
/* message types for MGMT messages */
#define MESSAGE_TYPE_ERR 0
#define MESSAGE_TYPE_NTFY 1
#define MESSAGE_TYPE_TEI_STATUS_REQ 2
#define MESSAGE_TYPE_TEI_STATUS_CON 3
#define MESSAGE_TYPE_TEI_STATUS_IND 4
/* message types for ASPSM messages */
#define MESSAGE_TYPE_UP 1
#define MESSAGE_TYPE_DOWN 2
#define MESSAGE_TYPE_BEAT 3
#define MESSAGE_TYPE_UP_ACK 4
#define MESSAGE_TYPE_DOWN_ACK 5
#define MESSAGE_TYPE_BEAT_ACK 6
/* message types for ASPTM messages */
#define MESSAGE_TYPE_ACTIVE 1
#define MESSAGE_TYPE_INACTIVE 2
#define MESSAGE_TYPE_ACTIVE_ACK 3
#define MESSAGE_TYPE_INACTIVE_ACK 4
/* message types for QPTM messages */
#define MESSAGE_TYPE_DATA_REQUEST 1
#define MESSAGE_TYPE_DATA_INDICATION 2
#define MESSAGE_TYPE_UNIT_DATA_REQUEST 3
#define MESSAGE_TYPE_UNIT_DATA_INDICATION 4
#define MESSAGE_TYPE_ESTABLISH_REQUEST 5
#define MESSAGE_TYPE_ESTABLISH_CONFIRM 6
#define MESSAGE_TYPE_ESTABLISH_INDICATION 7
#define MESSAGE_TYPE_RELEASE_REQUEST 8
#define MESSAGE_TYPE_RELEASE_CONFIRM 9
#define MESSAGE_TYPE_RELEASE_INDICATION 10
static const value_string iua_message_class_type_values[] = {
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "Error" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "Notify" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_REQ, "TEI status request" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_CON, "TEI status confirmation" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_IND, "TEI status indication" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP up" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP down" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "Heartbeat" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP up ack" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP down ack" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "Heartbeat ack" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP active" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP inactive" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP active ack" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "Data request" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "Data indication" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_REQUEST, "Unit data request" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_INDICATION, "Unit data indication" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "Establish request" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "Establish indication" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "Release request" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "Release confirmation" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "Release indication" },
{ 0, NULL } };
static const value_string iua_message_class_type_acro_values[] = {
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "ERR" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "NTFY" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_REQ, "TEI_STAT_REQ" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_CON, "TEI_STAT_CON" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_IND, "TEI_STAT_IND" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP_UP" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP_DOWN" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "BEAT" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP_UP_ACK" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP_DOWN_ACK" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "BEAT_ACK" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP_ACTIVE" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP_INACTIVE" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP_ACTIVE_ACK" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP_INACTIVE_ACK" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "DATA_REQ" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "DATA_IND" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_REQUEST, "U_DATA_REQ" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_INDICATION, "U_DATA_IND" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "EST_REQ" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "EST_CON" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "EST_IND" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "REL_REQ" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "REL_CON" },
{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "REL_IND" },
{ 0, NULL } };
#define PARAMETER_TAG_LENGTH 2
#define PARAMETER_LENGTH_LENGTH 2
#define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
#define PARAMETER_TAG_OFFSET 0
#define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
#define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
#define INT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x01
#define TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x03
#define INFO_PARAMETER_TAG 0x04
#define DLCI_PARAMETER_TAG 0x05
#define DIAGNOSTIC_INFORMATION_PARAMETER_TAG 0x07
#define INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x08
#define HEARTBEAT_DATA_PARAMETER_TAG 0x09
#define ASP_REASON_PARAMETER_TAG 0x0a
#define TRAFFIC_MODE_TYPE_PARAMETER_TAG 0x0b
#define ERROR_CODE_PARAMETER_TAG 0x0c
#define STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG 0x0d
#define PROTOCOL_DATA_PARAMETER_TAG 0x0e
#define RELEASE_REASON_PARAMETER_TAG 0x0f
#define TEI_STATUS_PARAMETER_TAG 0x10
static const value_string iua_parameter_tag_values[] = {
{ INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer interface identifier" },
{ TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Text interface identifier" },
{ INFO_PARAMETER_TAG, "Info" },
{ DLCI_PARAMETER_TAG, "DLCI" },
{ DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" },
{ INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer range interface identifier" },
{ HEARTBEAT_DATA_PARAMETER_TAG, "Hearbeat data" },
{ ASP_REASON_PARAMETER_TAG, "Reason" },
{ TRAFFIC_MODE_TYPE_PARAMETER_TAG, "Traffic mode type" },
{ ERROR_CODE_PARAMETER_TAG, "Error code" },
{ STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG, "Status type/identification" },
{ PROTOCOL_DATA_PARAMETER_TAG, "Protocol data" },
{ RELEASE_REASON_PARAMETER_TAG, "Reason" },
{ TEI_STATUS_PARAMETER_TAG, "TEI status" },
{ 0, NULL } };
#define INT_INTERFACE_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
#define INT_INTERFACE_IDENTIFIER_LENGTH 4
#define TEXT_INTERFACE_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
#define TEXT_INTERFACE_IDENTIFIER_LENGTH 4
#define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
#define START_LENGTH 4
#define END_LENGTH 4
#define START_OFFSET 0
#define END_OFFSET (START_OFFSET + START_LENGTH)
#define DLCI_LENGTH 2
#define DLCI_OFFSET PARAMETER_VALUE_OFFSET
#define ZERO_BIT_MASK 0x80
#define SPARE_BIT_MASK 0x40
#define SAPI_MASK 0x3f
#define ONE_BIT_MASK 0x80
#define TEI_MASK 0x7f
#define ASP_MGMT_REASON 1
static const value_string iua_asp_reason_values[] = {
{ ASP_MGMT_REASON, "Management inhibit" },
{ 0, NULL } };
#define ASP_REASON_LENGTH 4
#define ASP_REASON_OFFSET PARAMETER_VALUE_OFFSET
#define OVER_RIDE_TRAFFIC_MODE_TYPE 1
#define LOAD_SHARE_TRAFFIC_MODE_TYPE 2
static const value_string iua_traffic_mode_type_values[] = {
{ OVER_RIDE_TRAFFIC_MODE_TYPE, "Over-ride" },
{ LOAD_SHARE_TRAFFIC_MODE_TYPE, "Load-share" },
{ 0, NULL } };
#define TRAFFIC_MODE_TYPE_LENGTH 4
#define TRAFFIC_MODE_TYPE_OFFSET PARAMETER_VALUE_OFFSET
#define INVALID_VERSION_ERROR 0x01
#define INVALID_INTERFACE_IDENTIFIER_ERROR 0x02
#define UNSUPPORTED_MESSAGE_CLASS_ERROR 0x03
#define UNSUPPORTED_MESSAGE_TYPE_ERROR 0x04
#define UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR 0x05
#define UNEXPECTED_MESSAGE_ERROR 0x06
#define PROTOCOL_ERROR 0x07
#define UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR 0x08
#define INVALID_STREAM_IDENTIFIER_ERROR 0x09
#define UNASSIGNED_TEI_ERROR 0x0a
#define UNRECOGNIZED_SAPI_ERROR 0x0b
#define INVALID_TEI_SAPI_COMBINATION 0x0c
static const value_string iua_error_code_values[] = {
{ INVALID_VERSION_ERROR, "Invalid version" },
{ INVALID_INTERFACE_IDENTIFIER_ERROR, "Invalid interface identifier" },
{ UNSUPPORTED_MESSAGE_CLASS_ERROR, "Unsuported message class" },
{ UNSUPPORTED_MESSAGE_TYPE_ERROR, "Unsupported message type" },
{ UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR, "Unsupported traffic handling mode" },
{ UNEXPECTED_MESSAGE_ERROR, "Unexpected message" },
{ PROTOCOL_ERROR, "Protocol error" },
{ UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR, "Unsupported interface identifier type" },
{ INVALID_STREAM_IDENTIFIER_ERROR, "Invalid stream identifier" },
{ UNASSIGNED_TEI_ERROR, "Unassigned TEI" },
{ UNRECOGNIZED_SAPI_ERROR, "Unrecognized SAPI" },
{ INVALID_TEI_SAPI_COMBINATION, "Invalid TEI/SAPI combination" },
{ 0, NULL } };
#define ERROR_CODE_LENGTH 4
#define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
#define ASP_STATE_CHANGE_STATUS_TYPE 0x01
#define OTHER_STATUS_TYPE 0x02
static const value_string iua_status_type_values[] = {
{ ASP_STATE_CHANGE_STATUS_TYPE, "Application server state change" },
{ OTHER_STATUS_TYPE, "Other" },
{ 0, NULL } };
#define AS_DOWN_STATUS_IDENT 0x01
#define AS_INACTIVE_STATUS_IDENT 0x02
#define AS_ACTIVE_STATUS_IDENT 0x03
#define AS_PENDING_STATUS_IDENT 0x04
#define INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT 0x01
#define ALTERNATE_ASP_ACTIVE_STATUS_IDENT 0x02
static const value_string iua_status_type_ident_values[] = {
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_DOWN_STATUS_IDENT, "Application server down" },
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_INACTIVE_STATUS_IDENT, "Application server inactive" },
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_ACTIVE_STATUS_IDENT, "Application server active" },
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_PENDING_STATUS_IDENT, "Application server pending" },
{ OTHER_STATUS_TYPE * 256 * 256 + INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT, "Insufficient ASP resources active in AS" },
{ OTHER_STATUS_TYPE * 256 * 256 + ALTERNATE_ASP_ACTIVE_STATUS_IDENT, "Alternate ASP active" },
{ 0, NULL } };
#define STATUS_TYPE_LENGTH 2
#define STATUS_IDENT_LENGTH 2
#define STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET
#define STATUS_IDENT_OFFSET (STATUS_TYPE_OFFSET + STATUS_TYPE_LENGTH)
#define PROTOCOL_DATA_OFFSET PARAMETER_VALUE_OFFSET
#define RELEASE_MGMT_REASON 0
#define RELEASE_PHYS_REASON 1
#define RELEASE_DM_REASON 2
#define RELEASE_OTHER_REASON 4
static const value_string iua_release_reason_values[] = {
{ RELEASE_MGMT_REASON, "Management layer generated release" },
{ RELEASE_PHYS_REASON, "Physical layer alarm generated release" },
{ RELEASE_DM_REASON, "Layer 2 should release" },
{ RELEASE_OTHER_REASON, "Other reason" },
{ 0, NULL } };
#define RELEASE_REASON_OFFSET PARAMETER_VALUE_OFFSET
#define RELEASE_REASON_LENGTH 4
#define TEI_STATUS_ASSIGNED 0
#define TEI_STATUS_UNASSIGNED 1
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->fd, COL_INFO)) {
col_append_str(pinfo->fd, COL_INFO, val_to_str(message_class * 256 + message_type, iua_message_class_type_acro_values, "UNKNOWN"));
col_append_str(pinfo->fd, 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_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->fd, COL_PROTOCOL))
col_add_str(pinfo->fd, 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, tvb_length(message_tvb), 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,
""}
},
{ &hf_iua_reserved,
{ "Reserved", "iua.reserved",
FT_UINT8, BASE_HEX, NULL, 0x0,
""}
},
{ &hf_iua_message_class,
{ "Message class", "iua.message_class",
FT_UINT8, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_message_type,
{ "Message Type", "iua.message_type",
FT_UINT8, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_message_length,
{ "Message length", "iua.message_length",
FT_UINT32, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_parameter_tag,
{ "Parameter Tag", "iua.parameter_tag",
FT_UINT16, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_parameter_length,
{ "Parameter length", "iua.parameter_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_int_interface_identifier,
{ "Integer interface identifier", "iua.int_interface_identifier",
FT_UINT32, BASE_HEX, NULL, 0x0,
""}
},
{ &hf_iua_text_interface_identifier,
{ "Text interface identifier", "iua.text_interface_identifier",
FT_STRING, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_spare_bit,
{ "Spare bit", "hf.iua.spare_bit",
FT_BOOLEAN, 8, NULL, SPARE_BIT_MASK,
""}
},
{ &hf_iua_sapi,
{ "SAPI", "hf.iua.sapi",
FT_UINT8, BASE_HEX, NULL, SAPI_MASK,
""}
},
{ &hf_iua_zero_bit,
{ "Zero bit", "hf.iua.zero_bit",
FT_BOOLEAN, 8, NULL, ZERO_BIT_MASK,
""}
},
{ &hf_iua_one_bit,
{ "One bit", "hf.iua.one_bit",
FT_BOOLEAN, 8, NULL, ONE_BIT_MASK,
""}
},
{ &hf_iua_tei,
{ "TEI", "hf.iua.tei",
FT_UINT8, BASE_HEX, NULL, TEI_MASK,
""}
},
{ &hf_iua_info_string,
{ "Info string", "iua.info_string",
FT_STRING, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_interface_range_start,
{ "Start", "iua.interface_range_start",
FT_UINT32, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_interface_range_end,
{ "End", "iua.interface_range_end",
FT_UINT32, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_release_reason,
{ "Reason", "iua.release_reason",
FT_UINT32, BASE_HEX, NULL, 0x0,
""}
},
{ &hf_iua_status_type,
{ "Status type", "iua.status_type",
FT_UINT16, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_status_ident,
{ "Status identification", "iua.status_identification",
FT_UINT16, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_traffic_mode_type,
{ "Traffic mode type", "iua.traffic_mode_type",
FT_UINT32, BASE_HEX, NULL, 0x0,
""}
},
{ &hf_iua_error_code,
{ "Error code", "iua.error_code",
FT_UINT32, BASE_DEC, NULL, 0x0,
""}
},
{ &hf_iua_asp_reason,
{ "Reason", "iua.asp_reason",
FT_UINT32, BASE_HEX, NULL, 0x0,
""}
},
{ &hf_iua_tei_status,
{ "TEI status", "iua.tei_status",
FT_UINT32, BASE_HEX, NULL, 0x0,
""}
},
};
/* 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_add("sctp.port", SCTP_PORT_IUA, dissect_iua, proto_iua);
dissector_add("sctp.ppi", IUA_PAYLOAD_PROTO_ID, dissect_iua, proto_iua);
}
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