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wireshark/packet-iua.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/rfc/rfc3057.txt
* http://www.ietf.org/internet-drafts/draft-ietf-sigtran-iua-imp-guide-01.txt
* To do: - provide better handling of length parameters
*
* Copyright 2002, Michael Tuexen <tuexen [AT] fh-muenster.de>
*
* $Id: packet-iua.c,v 1.22 2003/12/21 05:51:33 jmayer Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* 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 <epan/packet.h>
#include "prefs.h"
#include "sctpppids.h"
#define NETWORK_BYTE_ORDER FALSE
static module_t *iua_module;
/* Initialize the protocol and registered fields */
static int proto_iua = -1;
static int hf_int_interface_id = -1;
static int hf_text_interface_id = -1;
static int hf_info_string = -1;
static int hf_dlci_zero_bit = -1;
static int hf_dlci_spare_bit = -1;
static int hf_dlci_sapi = -1;
static int hf_dlci_one_bit = -1;
static int hf_dlci_tei = -1;
static int hf_dlci_spare = -1;
static int hf_diag_info = -1;
static int hf_interface_range_start = -1;
static int hf_interface_range_end = -1;
static int hf_heartbeat_data = -1;
static int hf_asp_reason = -1;
static int hf_traffic_mode_type = -1;
static int hf_error_code = -1;
static int hf_error_code_ig = -1;
static int hf_status_type = -1;
static int hf_status_id = -1;
static int hf_release_reason = -1;
static int hf_tei_status = -1;
static int hf_asp_id = -1;
static int hf_parameter_tag = -1;
static int hf_parameter_tag_ig = -1;
static int hf_parameter_length = -1;
static int hf_parameter_value = -1;
static int hf_parameter_padding = -1;
static int hf_version = -1;
static int hf_reserved = -1;
static int hf_message_class = -1;
static int hf_message_type = -1;
static int hf_message_length = -1;
/* Initialize the subtree pointers */
static gint ett_iua = -1;
static gint ett_iua_parameter = -1;
/* option setable via preferences, default is plain RFC 3057 */
static gboolean support_IG = FALSE;
static dissector_handle_t q931_handle;
#define ADD_PADDING(x) ((((x) + 3) >> 2) << 2)
#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_ID_OFFSET PARAMETER_VALUE_OFFSET
#define INT_INTERFACE_ID_LENGTH 4
static void
dissect_int_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_int_interface_id, parameter_tvb, INT_INTERFACE_ID_OFFSET, INT_INTERFACE_ID_LENGTH, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%d)", tvb_get_ntohl(parameter_tvb, INT_INTERFACE_ID_OFFSET));
}
#define TEXT_INTERFACE_ID_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_text_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 interface_id_length;
interface_id_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
proto_tree_add_item(parameter_tree, hf_text_interface_id, parameter_tvb, TEXT_INTERFACE_ID_OFFSET, interface_id_length, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%.*s)", interface_id_length,
(const char *)tvb_get_ptr(parameter_tvb, TEXT_INTERFACE_ID_OFFSET, interface_id_length));
}
#define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_info_string_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 info_string_length;
info_string_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
proto_tree_add_item(parameter_tree, hf_info_string, parameter_tvb, INFO_STRING_OFFSET, info_string_length, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%.*s)", info_string_length,
(const char *)tvb_get_ptr(parameter_tvb, INFO_STRING_OFFSET, info_string_length));
}
#define DLCI_SAPI_LENGTH 1
#define DLCI_TEI_LENGTH 1
#define DLCI_SPARE_LENGTH 2
#define DLCI_SAPI_OFFSET PARAMETER_VALUE_OFFSET
#define DLCI_TEI_OFFSET (DLCI_SAPI_OFFSET + DLCI_SAPI_LENGTH)
#define DLCI_SPARE_OFFSET (DLCI_TEI_OFFSET + DLCI_TEI_LENGTH)
#define ZERO_BIT_MASK 0x01
#define SPARE_BIT_MASK 0x02
#define SAPI_MASK 0xfc
#define ONE_BIT_MASK 0x01
#define TEI_MASK 0xfe
static void
dissect_dlci_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
proto_tree_add_item(parameter_tree, hf_dlci_zero_bit, parameter_tvb, DLCI_SAPI_OFFSET, DLCI_SAPI_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(parameter_tree, hf_dlci_spare_bit, parameter_tvb, DLCI_SAPI_OFFSET, DLCI_SAPI_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(parameter_tree, hf_dlci_sapi, parameter_tvb, DLCI_SAPI_OFFSET, DLCI_SAPI_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(parameter_tree, hf_dlci_one_bit, parameter_tvb, DLCI_TEI_OFFSET, DLCI_TEI_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(parameter_tree, hf_dlci_tei, parameter_tvb, DLCI_TEI_OFFSET, DLCI_TEI_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(parameter_tree, hf_dlci_spare, parameter_tvb, DLCI_SPARE_OFFSET, DLCI_SPARE_LENGTH, NETWORK_BYTE_ORDER);
}
static void
dissect_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 diag_info_length;
diag_info_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
proto_tree_add_item(parameter_tree, hf_diag_info, parameter_tvb, PARAMETER_VALUE_OFFSET, diag_info_length, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%u byte%s)", diag_info_length, plurality(diag_info_length, "", "s"));
}
#define START_LENGTH 4
#define END_LENGTH 4
#define INTERVAL_LENGTH (START_LENGTH + END_LENGTH)
#define START_OFFSET 0
#define END_OFFSET (START_OFFSET + START_LENGTH)
static void
dissect_integer_range_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 number_of_ranges, range_number;
gint offset;
number_of_ranges = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) / INTERVAL_LENGTH;
offset = PARAMETER_VALUE_OFFSET;
for(range_number = 1; range_number <= number_of_ranges; range_number++) {
proto_tree_add_item(parameter_tree, hf_interface_range_start, parameter_tvb, offset + START_OFFSET, START_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(parameter_tree, hf_interface_range_end, parameter_tvb, offset + END_OFFSET, END_LENGTH, NETWORK_BYTE_ORDER);
offset += INTERVAL_LENGTH;
};
proto_item_append_text(parameter_item, " (%u range%s)", number_of_ranges, plurality(number_of_ranges, "", "s"));
}
#define HEARTBEAT_DATA_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 heartbeat_data_length;
heartbeat_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
proto_tree_add_item(parameter_tree, hf_heartbeat_data, parameter_tvb, HEARTBEAT_DATA_OFFSET, heartbeat_data_length, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%u byte%s)", heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
}
#define ASP_MGMT_REASON 1
static const value_string asp_reason_values[] = {
{ ASP_MGMT_REASON, "Management inhibit" },
{ 0, NULL } };
#define ASP_REASON_LENGTH 4
#define ASP_REASON_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_asp_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_asp_reason, parameter_tvb, ASP_REASON_OFFSET, ASP_REASON_LENGTH, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ASP_REASON_OFFSET), asp_reason_values, "unknown"));
}
#define OVER_RIDE_TRAFFIC_MODE_TYPE 1
#define LOAD_SHARE_TRAFFIC_MODE_TYPE 2
static const value_string 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
static void
dissect_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%s)",
val_to_str(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), traffic_mode_type_values, "unknown"));
}
#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_ERROR 0x0c
#define REFUSED_MANAGEMENT_BLOCKING_ERROR 0x0d
#define ASP_IDENTIFIER_REQUIRED_ERROR 0x0e
#define INVALID_ASP_IDENTIFIER_ERROR 0x0f
static const value_string 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_ERROR, "Invalid TEI/SAPI combination" },
{ 0, NULL } };
static const value_string error_code_ig_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_ERROR, "Invalid TEI/SAPI combination" },
{ REFUSED_MANAGEMENT_BLOCKING_ERROR, "Refused - Management blocking" },
{ ASP_IDENTIFIER_REQUIRED_ERROR, "ASP identifier required" },
{ INVALID_ASP_IDENTIFIER_ERROR, "Invalid ASP identifier" },
{ 0, NULL } };
#define ERROR_CODE_LENGTH 4
#define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, support_IG?hf_error_code_ig:hf_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%s)",
val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), support_IG?error_code_ig_values:error_code_values, "unknown"));
}
#define ASP_STATE_CHANGE_STATUS_TYPE 0x01
#define OTHER_STATUS_TYPE 0x02
static const value_string 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 status_type_id_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 } };
static const value_string status_type_id_ig_values[] = {
{ 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)
static void
dissect_status_type_identification_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 status_type, status_id;
status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
status_id = tvb_get_ntohs(parameter_tvb, STATUS_IDENT_OFFSET);
proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_uint_format(parameter_tree, hf_status_id, parameter_tvb, STATUS_IDENT_OFFSET, STATUS_IDENT_LENGTH,
status_id, "Status identification: %u (%s)", status_id,
val_to_str(status_type * 256 * 256 + status_id, support_IG?status_type_id_ig_values:status_type_id_values, "unknown"));
proto_item_append_text(parameter_item, " (%s)",
val_to_str(status_type * 256 * 256 + status_id, support_IG?status_type_id_ig_values:status_type_id_values, "unknown status information"));
}
#define PROTOCOL_DATA_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_protocol_data_parameter(tvbuff_t *parameter_tvb, proto_item *parameter_item, packet_info *pinfo, proto_tree *tree)
{
guint16 protocol_data_length;
tvbuff_t *protocol_data_tvb;
protocol_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
protocol_data_tvb = tvb_new_subset(parameter_tvb, PROTOCOL_DATA_OFFSET, protocol_data_length, protocol_data_length);
call_dissector(q931_handle, protocol_data_tvb, pinfo, tree);
proto_item_append_text(parameter_item, " (%u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
}
#define RELEASE_MGMT_REASON 0
#define RELEASE_PHYS_REASON 1
#define RELEASE_DM_REASON 2
#define RELEASE_OTHER_REASON 4
static const value_string 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
static void
dissect_release_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_release_reason, parameter_tvb, RELEASE_REASON_OFFSET, RELEASE_REASON_LENGTH, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%s)",
val_to_str(tvb_get_ntohl(parameter_tvb, RELEASE_REASON_OFFSET), release_reason_values, "unknown"));
}
#define TEI_STATUS_ASSIGNED 0
#define TEI_STATUS_UNASSIGNED 1
static const value_string 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
static void
dissect_tei_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_tei_status, parameter_tvb, TEI_STATUS_OFFSET, TEI_STATUS_LENGTH, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%s)",
val_to_str(tvb_get_ntohl(parameter_tvb, TEI_STATUS_OFFSET), tei_status_values, "unknown"));
}
#define ASP_ID_LENGTH 4
#define ASP_ID_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_asp_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_asp_id, parameter_tvb, ASP_ID_OFFSET, ASP_ID_LENGTH, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, ASP_ID_OFFSET));
}
static void
dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 parameter_value_length;
parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
if (parameter_value_length > 0)
proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, NETWORK_BYTE_ORDER);
proto_item_append_text(parameter_item, " with tag %u and %u byte%s value",
tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET), parameter_value_length, plurality(parameter_value_length, "", "s"));
}
#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
#define ASP_IDENTIFIER_PARAMETER_TAG 0x11
static const value_string 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 } };
static const value_string parameter_tag_ig_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" },
{ 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" },
{ ASP_IDENTIFIER_PARAMETER_TAG, "ASP identifier"},
{ 0, NULL } };
static void
dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *iua_tree)
{
guint16 tag, length, padding_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);
padding_length = tvb_length(parameter_tvb) - length;
/* create proto_tree stuff */
parameter_item = proto_tree_add_text(iua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb),
val_to_str(tag, support_IG?parameter_tag_ig_values:parameter_tag_values, "Unknown parameter"));
parameter_tree = proto_item_add_subtree(parameter_item, ett_iua_parameter);
/* add tag and length to the iua tree */
proto_tree_add_item(parameter_tree, support_IG?hf_parameter_tag_ig:hf_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
switch(tag) {
case INT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
dissect_int_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
dissect_text_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case INFO_PARAMETER_TAG:
dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case DLCI_PARAMETER_TAG:
dissect_dlci_parameter(parameter_tvb, parameter_tree);
break;
case DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG:
dissect_integer_range_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case HEARTBEAT_DATA_PARAMETER_TAG:
dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case ASP_REASON_PARAMETER_TAG:
if (support_IG)
dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
else
dissect_asp_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case TRAFFIC_MODE_TYPE_PARAMETER_TAG:
dissect_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case ERROR_CODE_PARAMETER_TAG:
dissect_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG:
dissect_status_type_identification_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case PROTOCOL_DATA_PARAMETER_TAG:
dissect_protocol_data_parameter(parameter_tvb, parameter_item, pinfo, tree);
break;
case RELEASE_REASON_PARAMETER_TAG:
dissect_release_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case TEI_STATUS_PARAMETER_TAG:
dissect_tei_status_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case ASP_IDENTIFIER_PARAMETER_TAG:
if (support_IG)
dissect_asp_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
else
dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
default:
dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
};
if (padding_length > 0)
proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
}
static void
dissect_parameters(tvbuff_t *parameters_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *iua_tree)
{
gint offset, length, total_length, remaining_length;
tvbuff_t *parameter_tvb;
offset = 0;
while((remaining_length = tvb_length_remaining(parameters_tvb, offset))) {
length = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET);
total_length = ADD_PADDING(length);
if (remaining_length >= length)
total_length = MIN(total_length, remaining_length);
/* create a tvb for the parameter including the padding bytes */
parameter_tvb = tvb_new_subset(parameters_tvb, offset, total_length, total_length);
dissect_parameter(parameter_tvb, pinfo, tree, iua_tree);
/* get rid of the handled parameter */
offset += total_length;
}
}
#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 COMMON_HEADER_OFFSET 0
#define VERSION_OFFSET COMMON_HEADER_OFFSET
#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 PARAMETERS_OFFSET (COMMON_HEADER_OFFSET + COMMON_HEADER_LENGTH)
#define PROTOCOL_VERSION_RELEASE_1 1
static const value_string 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 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
#define MESSAGE_TYPE_TEI_QUERY_REQ 5
/* 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 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 message_class_type_ig_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_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_QUERY_REQ, "TEI query request" },
{ 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 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 } };
static const value_string message_class_type_acro_ig_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_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_QUERY_REQ, "TEI_QUERY_REQ" },
{ 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 } };
static void
dissect_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *iua_tree)
{
guint8 message_class, message_type;
message_class = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
message_type = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
if (check_col(pinfo->cinfo, COL_INFO))
col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(message_class * 256 + message_type, support_IG?message_class_type_acro_ig_values:message_class_type_acro_values, "UNKNOWN"));
if (iua_tree) {
/* add the components of the common header to the protocol tree */
proto_tree_add_item(iua_tree, hf_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(iua_tree, hf_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(iua_tree, hf_message_class, common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_uint_format(iua_tree, hf_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, support_IG?message_class_type_ig_values:message_class_type_values, "reserved"));
proto_tree_add_item(iua_tree, hf_message_length, common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
}
}
static void
dissect_iua_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *iua_tree)
{
tvbuff_t *common_header_tvb, *parameters_tvb;
common_header_tvb = tvb_new_subset(message_tvb, COMMON_HEADER_OFFSET, COMMON_HEADER_LENGTH, COMMON_HEADER_LENGTH);
parameters_tvb = tvb_new_subset(message_tvb, PARAMETERS_OFFSET, -1, -1);
dissect_common_header(common_header_tvb, pinfo, iua_tree);
dissect_parameters(parameters_tvb, pinfo, tree, iua_tree);
}
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, support_IG?"IUA (RFC 3057 + IG)":"IUA (RFC 3057)");
/* 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, tree, iua_tree);
}
/* Register the protocol with Ethereal */
void
proto_register_iua(void)
{
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_int_interface_id, { "Integer interface identifier", "iua.int_interface_identifier", FT_INT32, BASE_HEX, NULL, 0x0, "", HFILL } },
{ &hf_text_interface_id, { "Text interface identifier", "iua.text_interface_identifier", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL } },
{ &hf_info_string, { "Info string", "iua.info_string", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL } },
{ &hf_dlci_zero_bit, { "Zero bit", "iua.dlci_zero_bit", FT_BOOLEAN, 8, NULL, ZERO_BIT_MASK, "", HFILL } },
{ &hf_dlci_spare_bit, { "Spare bit", "iua.dlci_spare_bit", FT_BOOLEAN, 8, NULL, SPARE_BIT_MASK, "", HFILL } },
{ &hf_dlci_sapi, { "SAPI", "iua.dlci_sapi", FT_UINT8, BASE_HEX, NULL, SAPI_MASK, "", HFILL } },
{ &hf_dlci_one_bit, { "One bit", "iua.dlci_one_bit", FT_BOOLEAN, 8, NULL, ONE_BIT_MASK, "", HFILL } },
{ &hf_dlci_tei, { "TEI", "iua.dlci_tei", FT_UINT8, BASE_HEX, NULL, TEI_MASK, "", HFILL } },
{ &hf_dlci_spare, { "Spare", "iua.dlci_spare", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL } },
{ &hf_diag_info, { "Diagnostic information", "iua.diagnostic_information", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
{ &hf_interface_range_start, { "Start", "iua.interface_range_start", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
{ &hf_interface_range_end, { "End", "iua.interface_range_end", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
{ &hf_heartbeat_data, { "Heartbeat data", "iua.heartbeat_data", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
{ &hf_asp_reason, { "Reason", "iua.asp_reason", FT_UINT32, BASE_HEX, VALS(asp_reason_values), 0x0, "", HFILL } },
{ &hf_traffic_mode_type, { "Traffic mode type", "iua.traffic_mode_type", FT_UINT32, BASE_HEX, VALS(traffic_mode_type_values), 0x0, "", HFILL } },
{ &hf_error_code, { "Error code", "iua.error_code", FT_UINT32, BASE_DEC, VALS(error_code_values), 0x0, "", HFILL } },
{ &hf_error_code_ig, { "Error code", "iua.error_code", FT_UINT32, BASE_DEC, VALS(error_code_ig_values), 0x0, "", HFILL } },
{ &hf_status_type, { "Status type", "iua.status_type", FT_UINT16, BASE_DEC, VALS(status_type_values), 0x0, "", HFILL } },
{ &hf_status_id, { "Status identification", "iua.status_identification", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
{ &hf_release_reason, { "Reason", "iua.release_reason", FT_UINT32, BASE_HEX, VALS(release_reason_values), 0x0, "", HFILL } },
{ &hf_tei_status, { "TEI status", "iua.tei_status", FT_UINT32, BASE_HEX, VALS(tei_status_values), 0x0, "", HFILL } },
{ &hf_asp_id, { "ASP identifier", "iua.asp_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } },
{ &hf_parameter_tag, { "Parameter Tag", "iua.parameter_tag", FT_UINT16, BASE_DEC, VALS(parameter_tag_values), 0x0, "", HFILL } },
{ &hf_parameter_tag_ig, { "Parameter Tag", "iua.parameter_tag", FT_UINT16, BASE_DEC, VALS(parameter_tag_ig_values), 0x0, "", HFILL } },
{ &hf_parameter_length, { "Parameter length", "iua.parameter_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
{ &hf_parameter_value, { "Parameter value", "iua.parameter_value", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
{ &hf_parameter_padding, { "Parameter padding", "iua.parameter_padding", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
{ &hf_version, { "Version", "iua.version", FT_UINT8, BASE_DEC, VALS(protocol_version_values), 0x0, "", HFILL } },
{ &hf_reserved, { "Reserved", "iua.reserved", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL } },
{ &hf_message_class, { "Message class", "iua.message_class", FT_UINT8, BASE_DEC, VALS(message_class_values), 0x0, "", HFILL } },
{ &hf_message_type, { "Message Type", "iua.message_type", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } },
{ &hf_message_length, { "Message length", "iua.message_length", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_iua,
&ett_iua_parameter,
};
/* Register the protocol name and description */
proto_iua = proto_register_protocol("ISDN Q.921-User Adaptation Layer", "IUA", "iua");
iua_module = prefs_register_protocol(proto_iua, NULL);
/* 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));
prefs_register_bool_preference(iua_module, "support_ig", "Support Implementers Guide", "Support Implementers Guide (version 01)", &support_IG);
}
#define SCTP_PORT_IUA 9900
void
proto_reg_handoff_iua(void)
{
dissector_handle_t iua_handle;
iua_handle = create_dissector_handle(dissect_iua, proto_iua);
q931_handle = find_dissector("q931");
dissector_add("sctp.port", SCTP_PORT_IUA, iua_handle);
dissector_add("sctp.ppi", IUA_PAYLOAD_PROTOCOL_ID, iua_handle);
}
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