diff options
author | Gilbert Ramirez <gram@alumni.rice.edu> | 2001-01-11 16:46:21 +0000 |
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committer | Gilbert Ramirez <gram@alumni.rice.edu> | 2001-01-11 16:46:21 +0000 |
commit | 9e6d0e17178f8f031fa55df98e8683722f6922f3 (patch) | |
tree | 53cf1a43a0d15ed33fc00f7686a545c4fa3d1c76 /packet-iua.c | |
parent | 916044629f1b566587752b9b06eb5028fb289459 (diff) |
Update the SCTP dissector, and add a dissector for
ISDN Q.921-User Adaptation Layer (IUA).
Both are from Michael.Tuexen@icn.siemens.de>
svn path=/trunk/; revision=2876
Diffstat (limited to 'packet-iua.c')
-rw-r--r-- | packet-iua.c | 1014 |
1 files changed, 1014 insertions, 0 deletions
diff --git a/packet-iua.c b/packet-iua.c new file mode 100644 index 0000000000..61d22547ab --- /dev/null +++ b/packet-iua.c @@ -0,0 +1,1014 @@ +/* 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 1.1 2001/01/11 16:46:21 gram 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 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, " "); + }; + + /* 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; + + /* 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 *ti; + proto_tree *iua_tree; + + pinfo->current_proto = "IUA"; + + CHECK_DISPLAY_AS_DATA(proto_iua, message_tvb, pinfo, 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 */ + ti = proto_tree_add_protocol_format(tree, proto_iua, message_tvb, 0, tvb_length(message_tvb), + "ISDN Q.921-User Adaptation Layer"); + iua_tree = proto_item_add_subtree(ti, ett_iua); + /* 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); +} + + |