forked from osmocom/wireshark
2356 lines
104 KiB
C
2356 lines
104 KiB
C
/* packet-v5ua.c
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* Routines for V5.2-User Adaptation Layer dissection
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*
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* $Id$
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*
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* Extension of ISDN Q.921-User Adaptation Layer dissection
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* Copyright 2002, Michael Tuexen <Michael.Tuexen[AT]siemens.com>
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*
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* Christoph Neusch <christoph.neusch@nortelnetworks.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/addr_resolv.h>
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#include <epan/strutil.h>
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#include <epan/sctpppids.h> /* include V5UA payload protocol ID */
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/* Initialize the protocol and registered fields */
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static int proto_v5ua = -1;
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static dissector_handle_t q931_handle;
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/* round up parameter length to multiple of four */
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#define ADD_PADDING(x) ((((x) + 3) >> 2) << 2)
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/* common msg-header */
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static int hf_version = -1;
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static int hf_reserved = -1;
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static int hf_msg_class = -1;
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static int hf_msg_type = -1;
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static int hf_msg_type_id = -1;
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static int hf_msg_length = -1;
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/* V5UA message header */
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static int hf_link_id = -1;
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static int hf_chnl_id = -1;
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static int hf_adaptation_layer_id = -1;
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static int hf_text_if_id = -1;
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static int hf_scn_protocol_id = -1;
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static int hf_info_string = -1;
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static int hf_dlci_zero_bit = -1;
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static int hf_dlci_spare_bit = -1;
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static int hf_dlci_sapi = -1;
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static int hf_dlci_one_bit = -1;
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static int hf_dlci_tei = -1;
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static int hf_efa = -1;
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static int hf_spare_efa = -1;
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/* variable length parameter (msg) */
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static int hf_parameter_tag = -1;
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static int hf_parameter_tag_draft = -1;
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static int hf_parameter_length = -1;
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static int hf_parameter_value = -1;
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static int hf_parameter_padding = -1;
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/* parameter fields */
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static int hf_link_status = -1;
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static int hf_sa_bit_id = -1;
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static int hf_sa_bit_value = -1;
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static int hf_diagnostic_info = -1;
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static int hf_if_range_start = -1;
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static int hf_if_range_end = -1;
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static int hf_heartbeat_data = -1;
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static int hf_traffic_mode_type = -1;
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static int hf_error_code = -1;
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static int hf_draft_error_code = -1;
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static int hf_status_type = -1;
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static int hf_status_id = -1;
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static int hf_error_reason = -1;
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static int hf_asp_reason = -1;
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static int hf_tei_status = -1;
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static int hf_tei_draft_status = -1;
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static int hf_release_reason = -1;
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/* Layer 3 message fields */
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static int hf_l3_protocol_discriminator = -1;
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static int hf_l3_adress = -1;
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static int hf_l3_low_adress = -1;
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static int hf_l3_msg_type = -1;
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static int hf_l3_info_element = -1;
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static int hf_l3_sequence_number = -1;
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static int hf_l3_v5_link_id = -1;
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static int hf_l3_v5_time_slot = -1;
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/*PSTN Message*/
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static int hf_l3_line_info = -1;
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static int hf_l3_cad_ringing = -1;
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static int hf_l3_pulse_type = -1;
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static int hf_l3_suppression_indicator = -1;
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static int hf_l3_pulse_duration = -1;
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static int hf_l3_ack_request_indicator = -1;
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static int hf_l3_number_of_pulses = -1;
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static int hf_l3_steady_signal = -1;
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static int hf_l3_auto_signalling_sequence= -1;
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static int hf_l3_pulse_notify = -1;
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static int hf_l3_sequence_response = -1;
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static int hf_l3_digit_ack = -1;
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static int hf_l3_digit_info = -1;
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static int hf_l3_res_unavailable = -1;
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static int hf_l3_state = -1;
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static int hf_l3_cause_type = -1;
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static int hf_l3_pstn_sequence_number = -1;
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static int hf_l3_duration_type = -1;
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/*link control*/
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static int hf_l3_link_control_function = -1;
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/*Protection protocol*/
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static int hf_l3_rejection_cause_type = -1;
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/*BCC protocol*/
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static int hf_l3_pstn_user_port_id = -1;
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static int hf_l3_pstn_user_port_id_lower = -1;
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static int hf_l3_isdn_user_port_id = -1;
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static int hf_l3_isdn_user_port_id_lower = -1;
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static int hf_l3_isdn_user_port_ts_num = -1;
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static int hf_l3_override = -1;
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static int hf_l3_reject_cause_type = -1;
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static int hf_l3_bcc_protocol_error_cause = -1;
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static int hf_l3_connection_incomplete_reason = -1;
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/*Control protocol*/
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static int hf_l3_control_function_element = -1;
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static int hf_l3_control_function_id = -1;
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static int hf_l3_variant = -1;
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static int hf_l3_if_id = -1;
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static int hf_l3_performance_grading = -1;
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static int hf_l3_cp_rejection_cause = -1;
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/* Initialize the subtree pointers */
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static gint ett_v5ua = -1;
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static gint ett_v5ua_common_header= -1;
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static gint ett_v5ua_parameter = -1;
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static gint ett_v5ua_layer3 = -1;
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#define RFC 0x1
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#define DRAFT 0x2
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/* Version of IUA */
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static int iua_version = RFC;
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/* Variables neccessary for dissection of draft messages */
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static int msg_class = -1;
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static int msg_type = -1;
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static int msg_length = -1;
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/* Code to actually dissect the packets */
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/* define the parameters for the Tags: Tag-Type,Tag-Length,Tag-Value (Payload) */
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#define PARAMETER_TAG_OFFSET 0
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#define PARAMETER_TAG_LENGTH 2
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#define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
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#define PARAMETER_LENGTH_LENGTH 2
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#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
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#define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
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#define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
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/*----------------------V5UA Interface Identifier (int) (Draft,RFC)------------*/
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/* define parameter for the format of the integer formatted Interface Identifier */
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#define INT_IF_ID_LINK_OFFSET PARAMETER_VALUE_OFFSET
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#define INT_IF_ID_LINK_LENGTH 4
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#define INT_IF_ID_CHNL_OFFSET INT_IF_ID_LINK_OFFSET
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#define INT_IF_ID_CHNL_LENGTH 1
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static void
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dissect_int_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
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{
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guint32 identifier;
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proto_tree_add_item(parameter_tree, hf_link_id, parameter_tvb, INT_IF_ID_LINK_OFFSET, INT_IF_ID_LINK_LENGTH, FALSE);
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identifier = tvb_get_ntohl(parameter_tvb,INT_IF_ID_LINK_OFFSET)>>5;
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proto_item_append_text(parameter_item, " Link: %d ",identifier);
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proto_tree_add_item(parameter_tree, hf_chnl_id, parameter_tvb, INT_IF_ID_CHNL_OFFSET+3, INT_IF_ID_CHNL_LENGTH, FALSE);
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identifier = tvb_get_guint8(parameter_tvb,INT_IF_ID_CHNL_OFFSET+3)&0x1f;
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proto_item_append_text(parameter_item, " Chnl: %d ", identifier);
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}
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/*----------------------V5UA Interface Identifier (int) (Draft,RFC)------------*/
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/*----------------------Text Interface Identifier (RFC)------------------------*/
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#define TEXT_IF_ID_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
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#define TEXT_IF_ID_VALUE_OFFSET PARAMETER_VALUE_OFFSET
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#define TEXT_IF_ID_HEADER_LENGTH PARAMETER_HEADER_LENGTH
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static void
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dissect_text_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
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{
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guint16 if_id_length;
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if_id_length = tvb_get_ntohs(parameter_tvb, TEXT_IF_ID_LENGTH_OFFSET) - TEXT_IF_ID_HEADER_LENGTH;
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proto_tree_add_item(parameter_tree, hf_text_if_id, parameter_tvb, TEXT_IF_ID_VALUE_OFFSET, if_id_length, FALSE);
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proto_item_append_text(parameter_item, " (0x%.*s)", if_id_length,
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(const char *)tvb_get_ptr(parameter_tvb, TEXT_IF_ID_VALUE_OFFSET, if_id_length));
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}
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/*----------------------Text Interface Identifier (RFC)------------------------*/
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/*----------------------DLCI & Envelope Function Address------------------------*/
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/* interpretation of EFA-values */
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static const value_string efa_values[] = {
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{ 8175, "ISDN Protocol" },
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{ 8176, "PSTN Protocol" },
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{ 8177, "CC Protocol" },
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{ 8178, "BCC Protocol" },
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{ 8179, "PROT Protocol" },
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{ 8180, "Link Contol Protocol" },
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{ 8191, "VALUE RESERVED" },
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{ 0, NULL } };
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#define DLCI_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
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#define DLCI_SAPI_OFFSET PARAMETER_VALUE_OFFSET
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#define DLCI_HEADER_LENGTH PARAMETER_HEADER_LENGTH
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#define DLCI_SAPI_LENGTH 1
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#define DLCI_TEI_LENGTH 1
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#define EFA_LENGTH 2
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static void
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dissect_dlci_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
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{
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guint16 efa = 0, offset=0;
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if (iua_version == RFC) offset = DLCI_SAPI_OFFSET;
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else if(iua_version == DRAFT) offset = DLCI_HEADER_LENGTH + tvb_get_ntohs(parameter_tvb, DLCI_LENGTH_OFFSET);
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proto_tree_add_item(parameter_tree, hf_dlci_zero_bit, parameter_tvb, offset, DLCI_SAPI_LENGTH, FALSE);
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proto_tree_add_item(parameter_tree, hf_dlci_spare_bit, parameter_tvb, offset, DLCI_SAPI_LENGTH, FALSE);
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proto_tree_add_item(parameter_tree, hf_dlci_sapi, parameter_tvb, offset, DLCI_SAPI_LENGTH, FALSE);
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offset += DLCI_SAPI_LENGTH;
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proto_tree_add_item(parameter_tree, hf_dlci_one_bit, parameter_tvb, offset, DLCI_TEI_LENGTH, FALSE);
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proto_tree_add_item(parameter_tree, hf_dlci_tei, parameter_tvb, offset, DLCI_TEI_LENGTH, FALSE);
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/* if SAPI & TEI not set to ZERO, value of EFA must be decode (EFA = 0 -> ISDN protocol)*/
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if(tvb_get_ntohs(parameter_tvb,offset-DLCI_TEI_LENGTH) != 0x01){
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offset += DLCI_TEI_LENGTH;
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efa = tvb_get_ntohs(parameter_tvb, offset);
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/* EFA-Values for ISDN-Protocal. For the "value_string"-function value must set to 8175 */
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if(efa < 8175) efa = 8175;
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/* Reserved values. For the "value_string"-function value must set to 8191 */
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else if ((efa >= 8181) && (efa < 8191)) efa = 8191;
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proto_tree_add_uint_format(parameter_tree, hf_efa, parameter_tvb, offset, EFA_LENGTH, efa,
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"Envelope function address: %s (%u)", val_to_str(efa, efa_values, "unknown EFA"),tvb_get_ntohs(parameter_tvb, offset));
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proto_item_append_text(parameter_item, " (EFA: %s )",val_to_str(efa, efa_values, "unknown EFA-value"));
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}
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/* if SAPI & TEI set to ZERO, EFA also shall be set to ZERO and didn't comply with value for ISDN protocol */
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else{
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proto_tree_add_uint_format(parameter_tree, hf_efa, parameter_tvb, offset, EFA_LENGTH, efa,
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"Envelope function address: 0");
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proto_item_append_text(parameter_item, " (EFA: 0 )");
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}
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}
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/*----------------------DLCI & Envelope Function Address------------------------*/
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/*----------------------Error Indication (Draft)-------------------------------*/
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/* define Error Code Parameter for Layer Management (MGMT) Messages */
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#define MGMT_ERROR_INVALID_TEI_DRAFT 0x00
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#define MGMT_ERROR_INVALID_IFID_DRAFT 0x01
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#define MGMT_ERROR_UNDEFINIED_MSG_DRAFT 0x02
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#define MGMT_ERROR_VERSION_ERR_DRAFT 0x03
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#define MGMT_ERROR_INVALID_STID_DRAFT 0x04
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#define MGMT_ERROR_INVALID_SCNV_DRAFT 0x05
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#define MGMT_ERROR_INVALID_ALI_DRAFT 0x06
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static const value_string draft_error_code_values[] = {
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{ MGMT_ERROR_INVALID_TEI_DRAFT, "Invalid TEI" },
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{ MGMT_ERROR_INVALID_IFID_DRAFT, "Invalid interface ID" },
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{ MGMT_ERROR_UNDEFINIED_MSG_DRAFT, "An unexpected message was received" },
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{ MGMT_ERROR_VERSION_ERR_DRAFT, "The IUA layers are of different version" },
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{ MGMT_ERROR_INVALID_STID_DRAFT, "Invalid SCTP stream identifier" },
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{ MGMT_ERROR_INVALID_SCNV_DRAFT, "Invalid SCN version" },
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{ MGMT_ERROR_INVALID_ALI_DRAFT, "Invalid Adaptation Layer Identifier" },
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{ 0, NULL } };
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#define MGMT_ERROR_MSG_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
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#define MGMT_ERROR_MSG_HEADER_LENGTH PARAMETER_HEADER_LENGTH
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#define MGMT_ERROR_CODE_LENGTH 4
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static void
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dissect_draft_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
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{
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guint16 offset = MGMT_ERROR_MSG_HEADER_LENGTH + tvb_get_ntohs(parameter_tvb, MGMT_ERROR_MSG_LENGTH_OFFSET) + 4;
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proto_tree_add_item(parameter_tree, hf_draft_error_code, parameter_tvb, offset, MGMT_ERROR_CODE_LENGTH, FALSE);
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offset += MGMT_ERROR_CODE_LENGTH ;
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if( tvb_length_remaining(parameter_tvb,offset) > 0 )
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proto_tree_add_item(parameter_tree, hf_info_string, parameter_tvb, offset, msg_length - offset,FALSE);
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}
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/*----------------------Error Indication (Draft)-------------------------------*/
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/*----------------------Error Indication (RFC)---------------------------------*/
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/* define Error Code Parameter for Layer Management (MGMT) Messages */
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#define MGMT_ERROR_INVALID_VERSION 0x01
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#define MGMT_ERROR_INVALID_IF_ID 0x02
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#define MGMT_ERROR_UNSUPPORTED_MSG_CLASS 0x03
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#define MGMT_ERROR_UNSUPPORTED_MSG_TYPE 0x04
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#define MGMT_ERROR_UNSUPPORTED_TRAFFIC_HANDLING_MODE 0x05
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#define MGMT_ERROR_UNEXPECTED_MSG 0x06
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#define MGMT_ERROR_PROTOCOL_ERROR 0x07
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#define MGMT_ERROR_UNSUPPORTED_IF_ID_TYPE 0x08
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#define MGMT_ERROR_INVALID_STREAM_ID 0x09
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#define MGMT_ERROR_UNASSIGNED_TEI 0x0a
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#define MGMT_ERROR_UNRECOGNIZED_SAPI 0x0b
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#define MGMT_ERROR_INVALID_TEI_SAPI_COMBINATION 0x0c
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static const value_string error_code_values[] = {
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{ MGMT_ERROR_INVALID_VERSION, "Invalid version" },
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{ MGMT_ERROR_INVALID_IF_ID, "Invalid interface identifier" },
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{ MGMT_ERROR_UNSUPPORTED_MSG_CLASS, "Unsuported message class" },
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{ MGMT_ERROR_UNSUPPORTED_MSG_TYPE, "Unsupported message type" },
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{ MGMT_ERROR_UNSUPPORTED_TRAFFIC_HANDLING_MODE, "Unsupported traffic handling mode" },
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{ MGMT_ERROR_UNEXPECTED_MSG, "Unexpected message" },
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{ MGMT_ERROR_PROTOCOL_ERROR, "Protocol error" },
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{ MGMT_ERROR_UNSUPPORTED_IF_ID_TYPE, "Unsupported interface identifier type" },
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{ MGMT_ERROR_INVALID_STREAM_ID, "Invalid stream identifier" },
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{ MGMT_ERROR_UNASSIGNED_TEI, "Unassigned TEI" },
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{ MGMT_ERROR_UNRECOGNIZED_SAPI, "Unrecognized SAPI" },
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{ MGMT_ERROR_INVALID_TEI_SAPI_COMBINATION, "Invalid TEI/SAPI combination" },
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{ 0, NULL } };
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#define MGMT_ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
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static void
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dissect_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
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{
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proto_tree_add_item(parameter_tree, hf_error_code, parameter_tvb, MGMT_ERROR_CODE_OFFSET, MGMT_ERROR_CODE_LENGTH, FALSE);
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proto_item_append_text(parameter_item, " (%s)",
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val_to_str(tvb_get_ntohl(parameter_tvb, MGMT_ERROR_CODE_OFFSET), error_code_values, "Unknown error code"));
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}
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static void
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dissect_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
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{
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guint16 diag_info_length;
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diag_info_length = tvb_get_ntohs(parameter_tvb, MGMT_ERROR_MSG_LENGTH_OFFSET) - MGMT_ERROR_MSG_HEADER_LENGTH;
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proto_tree_add_item(parameter_tree, hf_diagnostic_info, parameter_tvb, PARAMETER_VALUE_OFFSET, diag_info_length, FALSE);
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proto_item_append_text(parameter_item, " (%u byte%s)", diag_info_length, plurality(diag_info_length, "", "s"));
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}
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/*----------------------Error Indication (RFC)---------------------------------*/
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/*----------------------Notify (RFC)-------------------------------------------*/
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/* define Status Type parameters for Notify (NTFY) Messages */
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#define NTFY_STATUS_TYPE_AS_STATE_CHANGE 0x01
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#define NTFY_STATUS_TYPE_OTHER 0x02
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static const value_string status_type_values[] = {
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{ NTFY_STATUS_TYPE_AS_STATE_CHANGE, "Application server state change" },
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{ NTFY_STATUS_TYPE_OTHER, "Other" },
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|
{ 0, NULL } };
|
|
|
|
/* define Status Identification parameters for NTFY Messages (AS state change)*/
|
|
#define NTFY_STATUS_IDENT_AS_DOWN 0x01
|
|
#define NTFY_STATUS_IDENT_AS_INACTIVE 0x02
|
|
#define NTFY_STATUS_IDENT_AS_ACTIVE 0x03
|
|
#define NTFY_STATUS_IDENT_AS_PENDING 0x04
|
|
/* define Status Identification parameters for NTFY Messages (Other)*/
|
|
#define NTFY_STATUS_INSUFFICIENT_ASP_RES_ACTIVE 0x01
|
|
#define NTFY_STATUS_ALTERNATE_ASP_ACTIVE 0x02
|
|
|
|
static const value_string status_type_id_values[] = {
|
|
{ NTFY_STATUS_TYPE_AS_STATE_CHANGE * 256 * 256 + NTFY_STATUS_IDENT_AS_DOWN, "Application server down" },
|
|
{ NTFY_STATUS_TYPE_AS_STATE_CHANGE * 256 * 256 + NTFY_STATUS_IDENT_AS_INACTIVE, "Application server inactive" },
|
|
{ NTFY_STATUS_TYPE_AS_STATE_CHANGE * 256 * 256 + NTFY_STATUS_IDENT_AS_ACTIVE, "Application server active" },
|
|
{ NTFY_STATUS_TYPE_AS_STATE_CHANGE * 256 * 256 + NTFY_STATUS_IDENT_AS_PENDING, "Application server pending" },
|
|
{ NTFY_STATUS_TYPE_OTHER * 256 * 256 + NTFY_STATUS_INSUFFICIENT_ASP_RES_ACTIVE, "Insufficient ASP resources active in AS" },
|
|
{ NTFY_STATUS_TYPE_OTHER * 256 * 256 + NTFY_STATUS_ALTERNATE_ASP_ACTIVE, "Alternate ASP active" },
|
|
{ 0, NULL } };
|
|
|
|
#define NTFY_STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET
|
|
#define NTFY_STATUS_TYPE_LENGTH 2
|
|
#define NTFY_STATUS_IDENT_OFFSET (NTFY_STATUS_TYPE_OFFSET + NTFY_STATUS_TYPE_LENGTH)
|
|
#define NTFY_STATUS_IDENT_LENGTH 2
|
|
|
|
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, NTFY_STATUS_TYPE_OFFSET);
|
|
status_id = tvb_get_ntohs(parameter_tvb, NTFY_STATUS_IDENT_OFFSET);
|
|
|
|
proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, NTFY_STATUS_TYPE_OFFSET, NTFY_STATUS_TYPE_LENGTH, FALSE);
|
|
proto_tree_add_uint_format(parameter_tree, hf_status_id, parameter_tvb, NTFY_STATUS_IDENT_OFFSET, NTFY_STATUS_IDENT_LENGTH,
|
|
status_id, "Status identification: %u (%s)", status_id,
|
|
val_to_str(status_type * 256 * 256 + status_id, status_type_id_values, "unknown"));
|
|
|
|
proto_item_append_text(parameter_item, " (%s)",
|
|
val_to_str(status_type * 256 * 256 + status_id, status_type_id_values, "Unknown status information"));
|
|
}
|
|
/*----------------------Notify (RFC)-------------------------------------------*/
|
|
|
|
/*----------------------TEI Status Indication,Confirm (RFC)--------------------*/
|
|
|
|
/* define parameters for TEI Status (Indication,Confirm) Messages */
|
|
#define TEI_STATUS_ASSIGNED 0x0
|
|
#define TEI_STATUS_UNASSIGNED 0x1
|
|
|
|
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_OFFSET PARAMETER_VALUE_OFFSET
|
|
#define TEI_STATUS_LENGTH 4
|
|
|
|
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, FALSE);
|
|
proto_item_append_text(parameter_item, " (%s)",
|
|
val_to_str(tvb_get_ntohl(parameter_tvb, TEI_STATUS_OFFSET), tei_status_values, "Unknown TEI status"));
|
|
}
|
|
/*----------------------TEI Status (RFC)---------------------------------------*/
|
|
|
|
/*----------------------TEI Status Indication,Confirm (Draft)------------------*/
|
|
#define TEI_DRAFT_IN_SERVICE 0x0
|
|
#define TEI_DRAFT_OUT_OF_SERVICE 0x1
|
|
|
|
static const value_string tei_draft_status_values[] = {
|
|
{ TEI_DRAFT_IN_SERVICE, "TEI is in service" },
|
|
{ TEI_DRAFT_OUT_OF_SERVICE,"TEI is out of service" },
|
|
{ 0, NULL } };
|
|
|
|
#define TEI_STATUS_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
|
|
|
|
static void
|
|
dissect_draft_tei_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
gint length, offset;
|
|
offset = tvb_get_ntohs(parameter_tvb, TEI_STATUS_LENGTH_OFFSET) + 8;
|
|
length = msg_length - offset;
|
|
if(tvb_length_remaining(parameter_tvb, offset) > 0 ){
|
|
proto_tree_add_item(parameter_tree, hf_tei_draft_status, parameter_tvb, offset, TEI_STATUS_LENGTH, FALSE);
|
|
proto_item_append_text(parameter_item, " (%s)",
|
|
val_to_str(tvb_get_ntohl(parameter_tvb, offset), tei_draft_status_values, "Unknown TEI Status"));
|
|
}
|
|
}
|
|
/*----------------------TEI Status (Draft)-------------------------------------*/
|
|
|
|
/*----------------------ASP Up,Down,Active,Inactive (Draft)--------------------*/
|
|
|
|
static void
|
|
dissect_asp_msg_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 adaptation_layer_id_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
proto_tree_add_item(parameter_tree, hf_adaptation_layer_id, parameter_tvb, PARAMETER_VALUE_OFFSET, adaptation_layer_id_length, FALSE);
|
|
proto_item_append_text(parameter_item, " (%.*s)", adaptation_layer_id_length,
|
|
(const char *)tvb_get_ptr(parameter_tvb, PARAMETER_VALUE_OFFSET, adaptation_layer_id_length));
|
|
}
|
|
|
|
static void
|
|
dissect_scn_protocol_id_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 id_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
proto_tree_add_item(parameter_tree, hf_scn_protocol_id, parameter_tvb, PARAMETER_VALUE_OFFSET, id_length, FALSE);
|
|
proto_item_append_text(parameter_item, " (%.*s)", id_length,
|
|
(const char *)tvb_get_ptr(parameter_tvb, PARAMETER_VALUE_OFFSET, id_length));
|
|
}
|
|
|
|
/*----------------------ASP (Draft)--------------------------------------------*/
|
|
|
|
/*----------------------ASP Down + Ack (RFC)--------------------------------*/
|
|
/* define reason parameter for Application Server Process Maintenance (ASPM) Messages */
|
|
#define ASP_REASON_MGMT 1
|
|
|
|
static const value_string asp_reason_values[] = {
|
|
{ ASP_REASON_MGMT, "Management inhibit" },
|
|
{ 0, NULL } };
|
|
|
|
#define ASP_REASON_OFFSET PARAMETER_VALUE_OFFSET
|
|
#define ASP_REASON_LENGTH 4
|
|
|
|
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, FALSE);
|
|
proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ASP_REASON_OFFSET), asp_reason_values, "Unknown ASP down reason"));
|
|
}
|
|
|
|
|
|
/*----------------------ASP (RFC)----------------------------------------------*/
|
|
|
|
/*----------------------Heartbeat Data + Ack (RFC)-----------------------------*/
|
|
|
|
#define HEARTBEAT_MSG_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
|
|
#define HEARTBEAT_DATA_OFFSET PARAMETER_VALUE_OFFSET
|
|
#define HEARTBEAT_MSG_HEADER_LENGTH PARAMETER_HEADER_LENGTH
|
|
|
|
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, HEARTBEAT_MSG_LENGTH_OFFSET) - HEARTBEAT_MSG_HEADER_LENGTH;
|
|
proto_tree_add_item(parameter_tree, hf_heartbeat_data, parameter_tvb, HEARTBEAT_DATA_OFFSET, heartbeat_data_length, FALSE);
|
|
proto_item_append_text(parameter_item, " (%u byte%s)", heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
|
|
}
|
|
/*----------------------Heartbeat Data (RFC)-----------------------------------*/
|
|
|
|
|
|
/*----------------------ASP Active,Inactive + Ack (RFC)------------------------*/
|
|
#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, FALSE);
|
|
proto_item_append_text(parameter_item, " (%s)",
|
|
val_to_str(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), traffic_mode_type_values, "Unknown traffic mode type"));
|
|
}
|
|
|
|
#define INT_RANGE_START_OFFSET PARAMETER_VALUE_OFFSET
|
|
#define INT_RANGE_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
|
|
#define INT_RANGE_HEADER_LENGTH PARAMETER_HEADER_LENGTH
|
|
|
|
#define IF_ID_START_OFFSET 0
|
|
#define IF_ID_START_LENGTH 4
|
|
#define IF_ID_END_OFFSET (IF_ID_START_OFFSET + IF_ID_START_LENGTH)
|
|
#define IF_ID_END_LENGTH 4
|
|
#define IF_ID_INTERVAL_LENGTH (IF_ID_START_LENGTH + IF_ID_END_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, offset;
|
|
|
|
number_of_ranges = (tvb_get_ntohs(parameter_tvb, INT_RANGE_LENGTH_OFFSET) - INT_RANGE_HEADER_LENGTH) / IF_ID_INTERVAL_LENGTH;
|
|
offset = INT_RANGE_START_OFFSET;
|
|
for(range_number = 1; range_number <= number_of_ranges; range_number++) {
|
|
proto_tree_add_item(parameter_tree, hf_if_range_start, parameter_tvb, offset + IF_ID_START_OFFSET, IF_ID_START_LENGTH, FALSE);
|
|
proto_tree_add_item(parameter_tree, hf_if_range_end, parameter_tvb, offset + IF_ID_END_OFFSET, IF_ID_END_LENGTH, FALSE);
|
|
offset += IF_ID_INTERVAL_LENGTH;
|
|
};
|
|
|
|
proto_item_append_text(parameter_item, " (%u range%s)", number_of_ranges, plurality(number_of_ranges, "", "s"));
|
|
}
|
|
/*----------------------ASP Active,Inactive (RFC)------------------------------*/
|
|
|
|
/*----------------------Data Request,Indication (Draft,RFC)--------------------*/
|
|
/* message types of PSTN */
|
|
#define ESTABLISH 0x00
|
|
#define ESTABLISH_ACK 0x01
|
|
#define SIGNAL 0x02
|
|
#define SIGNAL_ACK 0x03
|
|
#define DISCONNECT 0x08
|
|
#define DISCONNECT_COMPLETE 0x09
|
|
#define STATUS_ENQUIRY 0x0c
|
|
#define STATUS 0x0d
|
|
#define PROTOCOL_PARAMETER 0x0e
|
|
/* message types of Control protocol */
|
|
#define PORT_CONTROL 0x10
|
|
#define PORT_CONTROL_ACK 0x11
|
|
#define COMMON_CONTROL 0x12
|
|
#define COMMON_CONTROL_ACK 0x13
|
|
/* message types of PROT protocol */
|
|
#define SWITCH_OVER_REQ 0x18
|
|
#define SWITCH_OVER_COM 0x19
|
|
#define OS_SWITCH_OVER_COM 0x1a
|
|
#define SWITCH_OVER_ACK 0x1b
|
|
#define SWITCH_OVER_REJECT 0x1c
|
|
#define PROT_PROTOCOL_ERROR 0x1d
|
|
#define RESET_SN_COM 0x1e
|
|
#define RESET_SN_ACK 0x1f
|
|
/* message types of BCC */
|
|
#define ALLOCATION 0x20
|
|
#define ALLOCATION_COMPLETE 0x21
|
|
#define ALLOCATION_REJECT 0x22
|
|
#define DE_ALLOCATION 0x23
|
|
#define DE_ALLOCATION_COMPLETE 0x24
|
|
#define DE_ALLOCATION_REJECT 0x25
|
|
#define AUDIT 0x26
|
|
#define AUDIT_COMPLETE 0x27
|
|
#define AN_FAULT 0x28
|
|
#define AN_FAULT_ACKNOWLEDGE 0x29
|
|
#define BCC_PROTOCOL_ERROR 0x2a
|
|
/* message types of Link Control protocol */
|
|
#define LINK_CONTROL 0x30
|
|
#define LINK_CONTROL_ACK 0x31
|
|
|
|
static const value_string l3_msg_type_values [] = {
|
|
{ ESTABLISH, "Establish" },
|
|
{ ESTABLISH_ACK, "Establish Ack" },
|
|
{ SIGNAL, "Signal" },
|
|
{ SIGNAL_ACK, "Signal Ack" },
|
|
{ DISCONNECT, "Disconnect" },
|
|
{ DISCONNECT_COMPLETE, "Disconnect Complete" },
|
|
{ STATUS_ENQUIRY, "Status Enqueiry" },
|
|
{ STATUS, "Status" },
|
|
{ PROTOCOL_PARAMETER, "Protocol Parameter" },
|
|
{ PORT_CONTROL, "Port Control" },
|
|
{ PORT_CONTROL_ACK, "Port Control Ack" },
|
|
{ COMMON_CONTROL, "Common Control" },
|
|
{ COMMON_CONTROL_ACK, "Common Control Ack" },
|
|
{ SWITCH_OVER_REQ, "Switch-Over Request" },
|
|
{ SWITCH_OVER_COM, "Switch-Over Com" },
|
|
{ OS_SWITCH_OVER_COM, "OS-Switch-Over Com" },
|
|
{ SWITCH_OVER_ACK, "Switch-Over Ack" },
|
|
{ SWITCH_OVER_REJECT, "Switch-Over Reject" },
|
|
{ PROT_PROTOCOL_ERROR, "Protection Protocol Error" },
|
|
{ RESET_SN_COM, "Reset SN Com" },
|
|
{ RESET_SN_ACK, "Reset SN Ack" },
|
|
{ ALLOCATION, "Allocation" },
|
|
{ ALLOCATION_COMPLETE, "Allocation Complete" },
|
|
{ ALLOCATION_REJECT, "Allocation Reject" },
|
|
{ DE_ALLOCATION, "DE Allocation" },
|
|
{ DE_ALLOCATION_COMPLETE,"DE Allocation Complete" },
|
|
{ DE_ALLOCATION_REJECT, "DE Allocation Reject" },
|
|
{ AUDIT, "Audit" },
|
|
{ AUDIT_COMPLETE, "Audit Complete" },
|
|
{ AN_FAULT, "AN Fault" },
|
|
{ AN_FAULT_ACKNOWLEDGE, "AN Fault Ack" },
|
|
{ BCC_PROTOCOL_ERROR, "BCC Protocol Error" },
|
|
{ LINK_CONTROL, "Link Control" },
|
|
{ LINK_CONTROL_ACK, "Link Control Ack" },
|
|
{ 0, NULL } };
|
|
|
|
/* PSTN protocol message info elements */
|
|
#define PULSE_NOTIFICATION 0xc0
|
|
#define LINE_INFORMATION 0x80
|
|
#define STATE 0x90
|
|
#define AUTO_SIG_SEQUENCE 0xa0
|
|
#define SEQUENCE_RESPONSE 0xb0
|
|
#define PSTN_SEQUENCE_NUMBER 0x00
|
|
#define CADENCED_RINGING 0x01
|
|
#define PULSED_SIGNAL 0x02
|
|
#define STEADY_SIGNAL 0x03
|
|
#define DIGIT_SIGNAL 0x04
|
|
#define RECOGNITION_TIME 0x10
|
|
#define ENABLE_AUTO_ACK 0x11
|
|
#define DISABLE_AUTO_ACK 0x12
|
|
#define CAUSE 0x13
|
|
#define RESOURCE_UNAVAILABLE 0x14
|
|
|
|
static const value_string l3_line_info_values [] = {
|
|
{ 0x00, "Impedance marker reset" },
|
|
{ 0x01, "Impedance marker set" },
|
|
{ 0x02, "Low loop impedance" },
|
|
{ 0x03, "Anomalous loop impedance" },
|
|
{ 0x04, "Anomalous line condition received"},
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_pulse_type_values [] = {
|
|
{ 0xff, "Pulsed normal polarity" },
|
|
{ 0xfe, "Pulsed reversed polarity" },
|
|
{ 0xfd, "Pulsed battery on c-wire" },
|
|
{ 0xfc, "Pulsed on hook" },
|
|
{ 0xfb, "Pulsed reduced battery" },
|
|
{ 0xfa, "Pulsed no battery" },
|
|
{ 0xf9, "Initial ring" },
|
|
{ 0xf8, "Meter pulse" },
|
|
{ 0xf7, "50 Hz pulse" },
|
|
{ 0xf6, "Register recall (timed loop open)" },
|
|
{ 0xf5, "Pulsed off hook (pulsed loop closed)" },
|
|
{ 0xf4, "Pulsed b-wire connected to earth" },
|
|
{ 0xf3, "Earth loop pulse" },
|
|
{ 0xf2, "Pulsed b-wire connected to battery" },
|
|
{ 0xf1, "Pulsed a-wire connected to earth" },
|
|
{ 0xf0, "Pulsed a-wire connected to battery" },
|
|
{ 0xef, "Pulsed c-wire connected to earth" },
|
|
{ 0xee, "Pulsed c-wire disconnected" },
|
|
{ 0xed, "Pulsed normal battery" },
|
|
{ 0xec, "Pulsed a-wire disconnected" },
|
|
{ 0xeb, "Pulsed b-wire disconnected" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_suppression_indication_values [] = {
|
|
{ 0x0, "No suppression" },
|
|
{ 0x1, "Suppression allowed by pre-defined V5.1 SIGNAL msg from LE" },
|
|
{ 0x2, "Suppression allowed by pre-defined line signal from TE" },
|
|
{ 0x3, "Suppression allowed by pre-defined V5.1 SIGNAL msg from LE or line signal from TE" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_ack_request_indication_values [] = {
|
|
{ 0x0, "No acknowledgement requested" },
|
|
{ 0x1, "Ending acknowledgement requested when finished each pulses" },
|
|
{ 0x2, "Ending acknowledgement requested when finished all pulses" },
|
|
{ 0x3, "Start of pulse acknowledgement requested" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_digit_ack_values [] = {
|
|
{ 0x0, "No ending acknowledgement requested" },
|
|
{ 0x1, "Ending acknowledgement requested when digit transmission is finished" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_state_values [] = {
|
|
{ 0x00, "AN0" },
|
|
{ 0x01, "AN1" },
|
|
{ 0x02, "AN2" },
|
|
{ 0x03, "AN3" },
|
|
{ 0x04, "AN4" },
|
|
{ 0x05, "AN5" },
|
|
{ 0x06, "AN6" },
|
|
{ 0x07, "AN7" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_steady_signal_values [] = {
|
|
{ 0x80, "Normal polarity" },
|
|
{ 0x81, "Reversed polarity" },
|
|
{ 0x82, "Battery on c-wire" },
|
|
{ 0x83, "No battery on c-wire" },
|
|
{ 0x84, "Off hook (loop closed)" },
|
|
{ 0x85, "On hook (loop open)" },
|
|
{ 0x86, "Battery on a-wire" },
|
|
{ 0x87, "A-wire on earth" },
|
|
{ 0x88, "No battery on a-wire" },
|
|
{ 0x89, "No batery on b-wire" },
|
|
{ 0x8a, "Reduced battery" },
|
|
{ 0x8b, "No battery" },
|
|
{ 0x8c, "Alternate reduced power / no power" },
|
|
{ 0x8d, "Normal battery" },
|
|
{ 0x8e, "Stop ringing" },
|
|
{ 0x8f, "Start pilot frequency" },
|
|
{ 0x90, "Stop pilot frequency" },
|
|
{ 0x91, "Low impedance on b-wire" },
|
|
{ 0x92, "B-wire connected to earth" },
|
|
{ 0x93, "B-wire disconnected from earth" },
|
|
{ 0x94, "Battery on b-wire" },
|
|
{ 0x95, "Low loop impedance" },
|
|
{ 0x96, "High loop impedance" },
|
|
{ 0x97, "Anomalous loop impedance" },
|
|
{ 0x98, "A-wire disconnected from earth" },
|
|
{ 0x99, "C-wire on earth" },
|
|
{ 0x9a, "C-wire disconnected from earth" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_cause_type_values [] = {
|
|
{ 0x00, "Response to STATUS ENQUIRY" },
|
|
{ 0x01, "Protocol discriminator error" },
|
|
{ 0x03, "L3 address error" },
|
|
{ 0x04, "Message type unrecognized" },
|
|
{ 0x05, "Out of sequence information element" },
|
|
{ 0x06, "Repeated optional information element" },
|
|
{ 0x07, "Mandatory information element missing" },
|
|
{ 0x08, "Unrecognized information element" },
|
|
{ 0x09, "Mandatory information element content error" },
|
|
{ 0x0a, "Optional information element content error" },
|
|
{ 0x0b, "Message not compatible with path state" },
|
|
{ 0x0c, "Repeated mandatory information element" },
|
|
{ 0x0d, "Too many information elements" },
|
|
{ 0, NULL } };
|
|
|
|
/* BCC protocol message info elements */
|
|
#define USER_PORT_ID 0x40
|
|
#define ISDN_PORT_CHNL_ID 0x41
|
|
#define V5_TIME_SLOT_ID 0x42
|
|
#define MULTI_SLOT_MAP 0x43
|
|
#define BCC_REJECT_CAUSE 0x44
|
|
#define BCC_PROTOCOL_ERROR_CAUSE 0x45
|
|
#define CONNECTION_INCOMPLETE 0x46
|
|
|
|
static const value_string l3_reject_cause_type_values [] = {
|
|
{ 0x00, "Unspecified" },
|
|
{ 0x01, "Access network fault" },
|
|
{ 0x02, "Access network blocked (internally)" },
|
|
{ 0x03, "Connection already present at the PSTN user port to a different V5 time slot" },
|
|
{ 0x04, "Connection already present at the V5 time slot(s) to a different port or ISDN user port time slot(s)" },
|
|
{ 0x05, "Connection already present at the ISDN user port time slot(s) to a different V5 time slot(s)" },
|
|
{ 0x06, "User port unavailable (blocked)" },
|
|
{ 0x07, "De-allocation cannot completeddue to incompatible data content" },
|
|
{ 0x08, "De-allocation cannot completeddue to V5 time slot(s) data incompatibility" },
|
|
{ 0x09, "De-allocation cannot completeddue to port data incompatibility" },
|
|
{ 0x0a, "De-allocation cannot completeddue to user port time slot(s) data incompatibility" },
|
|
{ 0x0b, "User port not provisioned" },
|
|
{ 0x0c, "Invalid V5 time slot(s) indication(s)" },
|
|
{ 0x0d, "Invalid V5 2048 kbit/s link indication" },
|
|
{ 0x0e, "Invalid user time slot(s) indication(s)" },
|
|
{ 0x0f, "V5 time slot(s) being used as physikal C-channel(s)" },
|
|
{ 0x10, "V5 link unavailable (blocked)" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_bcc_protocol_error_cause_type_values [] = {
|
|
{ 0x01, "Protocol discriminator error" },
|
|
{ 0x04, "Message type unrecognized" },
|
|
{ 0x05, "Out of sequence information element" },
|
|
{ 0x06, "Repeated optional information element" },
|
|
{ 0x07, "Mandatory information element missing" },
|
|
{ 0x08, "Unrecognized information element" },
|
|
{ 0x09, "Mandatory information element content error" },
|
|
{ 0x0a, "Optional infromation element content error" },
|
|
{ 0x0b, "Message not compatible with the BCC protocol state" },
|
|
{ 0x0c, "Repeated mandatory information element" },
|
|
{ 0x0d, "Too many information element" },
|
|
{ 0x0f, "BCC Reference Number coding error" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_connection_incomplete_reason_values [] = {
|
|
{ 0x00, "Incomplete normal" },
|
|
{ 0x01, "Access network fault" },
|
|
{ 0x02, "User port not provisioned" },
|
|
{ 0x03, "Invalid V5 time slot identification" },
|
|
{ 0x04, "Invalid V5 2048 kbit/s link identification" },
|
|
{ 0x05, "Time slot being used as physikal C-channel" },
|
|
{ 0, NULL } };
|
|
|
|
|
|
/* Link control protocol message info elements */
|
|
#define LINK_CONTROL_FUNCTION 0x30
|
|
|
|
static const value_string l3_link_control_function_values [] = {
|
|
{ 0x00, "FE-IDReq" },
|
|
{ 0x01, "FE-IDAck" },
|
|
{ 0x02, "FE-IDRel" },
|
|
{ 0x03, "FE-IDRej" },
|
|
{ 0x04, "FE301/302 (link unblock)" },
|
|
{ 0x05, "FE303/304 (link block)" },
|
|
{ 0x06, "FE305 (deferred link block request" },
|
|
{ 0x07, "FE306 (non-deferred link block request)" },
|
|
{ 0, NULL } };
|
|
|
|
/* Protection protocol message info elements */
|
|
#define SEQUENCE_NUMBER 0x50
|
|
#define C_CHANNEL_ID 0x51
|
|
#define PP_REJECTION_CAUSE 0x52
|
|
#define PROTOCOL_ERROR 0x53
|
|
|
|
/* Control protocolmessage info elements */
|
|
#define PERFORMANCE_GRADING 0xe0
|
|
#define CP_REJECTION_CAUSE 0xf0
|
|
#define CONTROL_FUNCTION_ELEMENT 0x20
|
|
#define CONTROL_FUNCTION_ID 0x21
|
|
#define VARIANT 0x22
|
|
#define INTERFACE_ID 0x23
|
|
|
|
static const value_string l3_performance_grading_values [] = {
|
|
{ 0x00, "normal grade" },
|
|
{ 0x01, "degraded" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_cp_rejection_cause_values [] = {
|
|
{ 0x00, "variant unknown" },
|
|
{ 0x01, "variant known, not ready" },
|
|
{ 0x02, "re-provisioning in progress (re-pro)" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_control_function_element_values [] = {
|
|
{ 0x01, "FE101 (activate access)" },
|
|
{ 0x02, "FE102 (activation initiated by user)" },
|
|
{ 0x03, "FE103 (DS activated)" },
|
|
{ 0x04, "FE104 (access activated)" },
|
|
{ 0x05, "FE105 (deactivate access)" },
|
|
{ 0x06, "FE106 (access deactivated)" },
|
|
{ 0x11, "FE201/202 (unblock)" },
|
|
{ 0x13, "FE203/204 (block)" },
|
|
{ 0x15, "FE205 (block request)" },
|
|
{ 0x16, "FE206 (performance grading)" },
|
|
{ 0x17, "FE207 (D-channel block)" },
|
|
{ 0x18, "FE208 (D-channel unblock)" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_control_function_id_values [] = {
|
|
{ 0x00, "Verify re-provisioning" },
|
|
{ 0x01, "Ready for re-provisioning" },
|
|
{ 0x02, "Not ready for re-provisioning" },
|
|
{ 0x03, "Switch-over to new variant" },
|
|
{ 0x04, "Re-provisioning started" },
|
|
{ 0x05, "Cannot re-provision" },
|
|
{ 0x06, "Request variant and interface ID" },
|
|
{ 0x07, "Variant and interface ID" },
|
|
{ 0x08, "Blocking started" },
|
|
{ 0x10, "Restart request" },
|
|
{ 0x11, "Restart complete" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string l3_info_element_values [] = {
|
|
{ PULSE_NOTIFICATION, "Pulse notification" },
|
|
{ LINE_INFORMATION, "Line information" },
|
|
{ STATE, "State" },
|
|
{ AUTO_SIG_SEQUENCE, "Autonomous signal sequence" },
|
|
{ SEQUENCE_RESPONSE, "Sequence response" },
|
|
{ PSTN_SEQUENCE_NUMBER, "Sequence number" },
|
|
{ CADENCED_RINGING, "Cadenced ringing" },
|
|
{ PULSED_SIGNAL, "Pulsed signal" },
|
|
{ STEADY_SIGNAL, "Steady signal" },
|
|
{ DIGIT_SIGNAL, "Digit signal" },
|
|
{ RECOGNITION_TIME, "Recognition time" },
|
|
{ ENABLE_AUTO_ACK, "Enable autonomous acknowledge" },
|
|
{ DISABLE_AUTO_ACK, "Disable autonomous acknowledge" },
|
|
{ CAUSE, "Cause" },
|
|
{ RESOURCE_UNAVAILABLE, "Resource unavailable" },
|
|
{ PERFORMANCE_GRADING, "Performance grading" },
|
|
{ CP_REJECTION_CAUSE, "Rejection cause" },
|
|
{ CONTROL_FUNCTION_ELEMENT,"Control function element" },
|
|
{ CONTROL_FUNCTION_ID, "Control function ID" },
|
|
{ VARIANT, "Variant" },
|
|
{ INTERFACE_ID, "Interface ID" },
|
|
{ LINK_CONTROL_FUNCTION, "Link control funktion" },
|
|
{ USER_PORT_ID, "User port ID" },
|
|
{ ISDN_PORT_CHNL_ID, "ISDN port channel ID" },
|
|
{ V5_TIME_SLOT_ID, "V5 time slot ID" },
|
|
{ MULTI_SLOT_MAP, "Multi slot map" },
|
|
{ BCC_REJECT_CAUSE, "Reject cause" },
|
|
{ BCC_PROTOCOL_ERROR_CAUSE,"Protocol error cause" },
|
|
{ CONNECTION_INCOMPLETE, "Connection incomplete" },
|
|
{ SEQUENCE_NUMBER, "Sequence number" },
|
|
{ C_CHANNEL_ID, "C-Channel ID" },
|
|
{ PP_REJECTION_CAUSE, "Rejection cause" },
|
|
{ PROTOCOL_ERROR, "Protocol error" },
|
|
{ 0, NULL } };
|
|
|
|
|
|
#define DISCRIMINATOR_OFFSET 0
|
|
#define DISCRIMINATOR_LENGTH 1
|
|
#define ADDRESS_OFFSET 1
|
|
#define ADDRESS_LENGTH 1
|
|
#define LOW_ADDRESS_OFFSET 2
|
|
#define LOW_ADDRESS_LENGTH 1
|
|
#define MSG_TYPE_OFFSET 3
|
|
#define MSG_TYPE_LENGTH 1
|
|
#define MSG_HEADER_LENGTH 4
|
|
#define INFO_ELEMENT_OFFSET 4
|
|
#define INFO_ELEMENT_LENGTH 1
|
|
|
|
static void
|
|
dissect_layer3_message(tvbuff_t *layer3_data_tvb, proto_tree *v5ua_tree,proto_item *parameter_item, packet_info *pinfo)
|
|
{
|
|
proto_item *layer3_header_item,*layer3_item, *hidden_item;
|
|
proto_tree *layer3_header_tree,*layer3_tree;
|
|
guint16 discriminator_offset, address_offset, low_address_offset, msg_type_offset, info_element_offset;
|
|
guint8 info_element, info_element_length, buffer;
|
|
|
|
if(iua_version == DRAFT){
|
|
discriminator_offset = DISCRIMINATOR_OFFSET;
|
|
address_offset = ADDRESS_OFFSET;
|
|
low_address_offset = LOW_ADDRESS_OFFSET;
|
|
msg_type_offset = MSG_TYPE_OFFSET;
|
|
info_element_offset = INFO_ELEMENT_OFFSET;
|
|
}
|
|
else{
|
|
discriminator_offset = DISCRIMINATOR_OFFSET + PARAMETER_HEADER_LENGTH;
|
|
address_offset = ADDRESS_OFFSET + PARAMETER_HEADER_LENGTH;
|
|
low_address_offset = LOW_ADDRESS_OFFSET + PARAMETER_HEADER_LENGTH;
|
|
msg_type_offset = MSG_TYPE_OFFSET + PARAMETER_HEADER_LENGTH;
|
|
info_element_offset = INFO_ELEMENT_OFFSET + PARAMETER_HEADER_LENGTH;
|
|
}
|
|
|
|
|
|
if(tvb_get_guint8(layer3_data_tvb, discriminator_offset) == 0x48){
|
|
layer3_header_item = proto_tree_add_text(v5ua_tree, layer3_data_tvb, discriminator_offset, MSG_HEADER_LENGTH,"Layer3 header");
|
|
layer3_header_tree = proto_item_add_subtree(layer3_header_item, ett_v5ua_layer3);
|
|
|
|
proto_tree_add_item(layer3_header_tree, hf_l3_protocol_discriminator, layer3_data_tvb, discriminator_offset, DISCRIMINATOR_LENGTH, FALSE);
|
|
proto_tree_add_item(layer3_header_tree, hf_l3_adress, layer3_data_tvb, address_offset, ADDRESS_LENGTH, FALSE);
|
|
proto_tree_add_item(layer3_header_tree, hf_l3_low_adress, layer3_data_tvb, low_address_offset, LOW_ADDRESS_LENGTH, FALSE);
|
|
proto_tree_add_item(layer3_header_tree, hf_l3_msg_type, layer3_data_tvb, msg_type_offset, MSG_TYPE_LENGTH, FALSE);
|
|
proto_item_append_text(layer3_header_item, " Msg Type: %s",
|
|
val_to_str(tvb_get_guint8(layer3_data_tvb, msg_type_offset), l3_msg_type_values, "Unknown layer3 msg type"));
|
|
|
|
if(tvb_length_remaining(layer3_data_tvb,info_element_offset)){
|
|
layer3_item = proto_tree_add_text(v5ua_tree, layer3_data_tvb, info_element_offset, tvb_length(layer3_data_tvb)-MSG_HEADER_LENGTH,"Layer3 message");
|
|
layer3_tree = proto_item_add_subtree(layer3_item, ett_v5ua_layer3);
|
|
|
|
info_element_offset = INFO_ELEMENT_OFFSET;
|
|
|
|
while(tvb_length_remaining(layer3_data_tvb,info_element_offset)){
|
|
info_element = tvb_get_guint8(layer3_data_tvb, info_element_offset);
|
|
hidden_item = proto_tree_add_item(layer3_tree, hf_l3_info_element, layer3_data_tvb,info_element_offset,INFO_ELEMENT_LENGTH,FALSE);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
switch(tvb_get_guint8(layer3_data_tvb, msg_type_offset) & 0xf0){
|
|
case 0x00:
|
|
/* Variable Length */
|
|
if(info_element < 0x80){
|
|
switch(info_element){
|
|
case PSTN_SEQUENCE_NUMBER:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_pstn_sequence_number,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case CADENCED_RINGING:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_cad_ringing,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case PULSED_SIGNAL:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_pulse_type,layer3_data_tvb,info_element_offset+2,1,FALSE);/*info_element_length,FALSE); */
|
|
proto_tree_add_item(layer3_tree,hf_l3_suppression_indicator,layer3_data_tvb,info_element_offset+3,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_pulse_duration,layer3_data_tvb,info_element_offset+3,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_ack_request_indicator,layer3_data_tvb,info_element_offset+4,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_number_of_pulses,layer3_data_tvb,info_element_offset+4,1,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case STEADY_SIGNAL:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_steady_signal,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
proto_item_append_text(layer3_item, " Steady Signal: %s",
|
|
val_to_str(tvb_get_guint8(layer3_data_tvb, info_element_offset+2), l3_steady_signal_values, "Unknown Signal"));
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case DIGIT_SIGNAL:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
buffer = tvb_get_guint8(layer3_data_tvb, info_element_offset+2)>>6;
|
|
buffer = buffer&0x01;
|
|
proto_tree_add_uint_format(layer3_tree, hf_l3_digit_ack,layer3_data_tvb,info_element_offset+2,1,buffer,
|
|
"Digit ack request indication: %s",val_to_str(buffer,l3_digit_ack_values,"unknown"));
|
|
proto_tree_add_item(layer3_tree,hf_l3_digit_info,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case RECOGNITION_TIME:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
buffer = tvb_get_guint8(layer3_data_tvb,info_element_offset+2)&0x7f;
|
|
/*Signal = Coding of pulse type*/
|
|
if(buffer>=0x6b)
|
|
proto_tree_add_item(layer3_tree,hf_l3_pulse_type,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
/*Signal = Coding of steady signal type*/
|
|
else if(buffer<=0x1a)
|
|
proto_tree_add_item(layer3_tree,hf_l3_steady_signal,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_duration_type,layer3_data_tvb,info_element_offset+3,1,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case ENABLE_AUTO_ACK:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
buffer = tvb_get_guint8(layer3_data_tvb,info_element_offset+2)&0x7f;
|
|
/*Signal*/
|
|
if(buffer>=0x6b)
|
|
proto_tree_add_item(layer3_tree,hf_l3_pulse_type,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
else if(buffer<=0x1a)
|
|
proto_tree_add_item(layer3_tree,hf_l3_steady_signal,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
|
|
buffer = tvb_get_guint8(layer3_data_tvb,info_element_offset+3)&0x7f;
|
|
/*Response*/
|
|
if(buffer>=0x6b)
|
|
proto_tree_add_item(layer3_tree,hf_l3_pulse_type,layer3_data_tvb,info_element_offset+3,1,FALSE);
|
|
else if(buffer<=0x1a)
|
|
proto_tree_add_item(layer3_tree,hf_l3_steady_signal,layer3_data_tvb,info_element_offset+3,1,FALSE);
|
|
|
|
if(tvb_length_remaining(layer3_data_tvb, info_element_offset+4)){
|
|
proto_tree_add_item(layer3_tree,hf_l3_suppression_indicator,layer3_data_tvb,info_element_offset+4,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_pulse_duration,layer3_data_tvb,info_element_offset+4,1,FALSE);
|
|
}
|
|
if(tvb_length_remaining(layer3_data_tvb, info_element_offset+5)){
|
|
proto_tree_add_item(layer3_tree,hf_l3_ack_request_indicator,layer3_data_tvb,info_element_offset+5,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_number_of_pulses,layer3_data_tvb,info_element_offset+5,1,FALSE);
|
|
}
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case DISABLE_AUTO_ACK:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
buffer = tvb_get_guint8(layer3_data_tvb,info_element_offset+2)&0x7f;
|
|
if(buffer>=0x6b)
|
|
proto_tree_add_item(layer3_tree,hf_l3_pulse_type,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
else if(buffer<=0x1a)
|
|
proto_tree_add_item(layer3_tree,hf_l3_steady_signal,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case CAUSE:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_cause_type,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
if(tvb_length_remaining(layer3_data_tvb, info_element_offset+3))
|
|
proto_tree_add_uint_format(layer3_tree, hf_l3_msg_type,layer3_data_tvb, info_element_offset+3,1,tvb_get_guint8(layer3_data_tvb,info_element_offset+3),
|
|
"Diagnostic: %s",val_to_str(tvb_get_guint8(layer3_data_tvb,info_element_offset+3),l3_msg_type_values,"unknown"));
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case RESOURCE_UNAVAILABLE:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_res_unavailable,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
default:
|
|
info_element_offset += 1;
|
|
break;
|
|
}
|
|
}
|
|
/* Single Octet */
|
|
else if(info_element >= 0x80){
|
|
switch(info_element & 0xf0){
|
|
case PULSE_NOTIFICATION:
|
|
proto_tree_add_item(layer3_tree,hf_l3_pulse_notify,layer3_data_tvb,info_element_offset,1,FALSE);
|
|
break;
|
|
case LINE_INFORMATION:
|
|
proto_tree_add_item(layer3_tree,hf_l3_line_info,layer3_data_tvb,info_element_offset,1,FALSE);
|
|
break;
|
|
case STATE:
|
|
proto_tree_add_item(layer3_tree,hf_l3_state,layer3_data_tvb,info_element_offset,1,FALSE);
|
|
break;
|
|
case AUTO_SIG_SEQUENCE:
|
|
proto_tree_add_item(layer3_tree,hf_l3_auto_signalling_sequence,layer3_data_tvb,info_element_offset,1,FALSE);
|
|
break;
|
|
case SEQUENCE_RESPONSE:
|
|
proto_tree_add_item(layer3_tree,hf_l3_sequence_response,layer3_data_tvb,info_element_offset,1,FALSE);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
info_element_offset += 1;
|
|
}
|
|
break;
|
|
|
|
case 0x10:
|
|
/* Variable Length */
|
|
if(info_element < 0x80){
|
|
switch(info_element){
|
|
case CONTROL_FUNCTION_ELEMENT:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_control_function_element,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case CONTROL_FUNCTION_ID:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_control_function_id,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case VARIANT:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_variant,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case INTERFACE_ID:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_if_id,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case SEQUENCE_NUMBER:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_sequence_number,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case C_CHANNEL_ID:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_v5_link_id,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_v5_time_slot,layer3_data_tvb,info_element_offset+3,1,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case PP_REJECTION_CAUSE:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_rejection_cause_type,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case PROTOCOL_ERROR:
|
|
break;
|
|
default:
|
|
info_element_offset += 1;
|
|
break;
|
|
}
|
|
}
|
|
/* Single Octet */
|
|
else if(info_element >= 0x80){
|
|
switch(info_element & 0xf0){
|
|
case PERFORMANCE_GRADING:
|
|
proto_tree_add_item(layer3_tree,hf_l3_performance_grading,layer3_data_tvb,info_element_offset,1,FALSE);
|
|
break;
|
|
case CP_REJECTION_CAUSE:
|
|
proto_tree_add_item(layer3_tree,hf_l3_cp_rejection_cause,layer3_data_tvb,info_element_offset,1,FALSE);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
info_element_offset += 1;
|
|
}
|
|
break;
|
|
|
|
case 0x20:
|
|
/* Variable Length */
|
|
switch(info_element){
|
|
case USER_PORT_ID:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
buffer = tvb_get_guint8(layer3_data_tvb,info_element_offset+2)&0x01;
|
|
if(buffer==0x01){
|
|
proto_tree_add_item(layer3_tree,hf_l3_pstn_user_port_id,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_pstn_user_port_id_lower,layer3_data_tvb,info_element_offset+3,1,FALSE);
|
|
}
|
|
else if(buffer == 0x00){
|
|
proto_tree_add_item(layer3_tree,hf_l3_isdn_user_port_id,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_isdn_user_port_id_lower,layer3_data_tvb,info_element_offset+3,1,FALSE);
|
|
}
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case ISDN_PORT_CHNL_ID:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_isdn_user_port_ts_num,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case V5_TIME_SLOT_ID:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_v5_link_id,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_override,layer3_data_tvb,info_element_offset+3,1,FALSE);
|
|
proto_tree_add_item(layer3_tree,hf_l3_v5_time_slot,layer3_data_tvb,info_element_offset+3,1,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case MULTI_SLOT_MAP:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_v5_link_id,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
/* add ts upts here */
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case BCC_REJECT_CAUSE:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_reject_cause_type,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
/* add diagnostic */
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case BCC_PROTOCOL_ERROR_CAUSE:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_bcc_protocol_error_cause,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
/* add diagnostic */
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
case CONNECTION_INCOMPLETE:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_connection_incomplete_reason,layer3_data_tvb,info_element_offset+2,1,FALSE);
|
|
info_element_offset +=info_element_length+2;
|
|
break;
|
|
default:
|
|
info_element_offset += 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 0x30:
|
|
/* Variable Length */
|
|
switch(info_element){
|
|
case LINK_CONTROL_FUNCTION:
|
|
info_element_length = tvb_get_guint8(layer3_data_tvb,info_element_offset+1);
|
|
proto_tree_add_item(layer3_tree,hf_l3_link_control_function,layer3_data_tvb,info_element_offset+2,info_element_length,FALSE);
|
|
info_element_offset += info_element_length+2;
|
|
break;
|
|
default:
|
|
info_element_offset += 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
info_element_offset += 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else{
|
|
guint16 protocol_data_length;
|
|
tvbuff_t *protocol_data_tvb;
|
|
|
|
protocol_data_length = tvb_get_ntohs(layer3_data_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
|
|
protocol_data_tvb = tvb_new_subset(layer3_data_tvb, PARAMETER_VALUE_OFFSET, protocol_data_length, protocol_data_length);
|
|
call_dissector(q931_handle, protocol_data_tvb, pinfo, v5ua_tree);
|
|
|
|
proto_item_append_text(parameter_item, " (%u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
|
|
}
|
|
}
|
|
|
|
/*----------------------Data Request,Indication (Draft,RFC)------------------------*/
|
|
|
|
/*----------------------Establish Request,Confirm,Indication (Draft,RFC)-------*/
|
|
/*
|
|
* no additional parameter
|
|
*/
|
|
/*----------------------Establish Request,Confirm,Indication (Draft,RFC)-------*/
|
|
|
|
/*----------------------Release Indication, Request (Draft,RFC)----------------*/
|
|
|
|
/* define parameters for Release Request and Indication Messages */
|
|
#define RELEASE_MGMT 0x0
|
|
#define RELEASE_PHYS 0x1
|
|
#define RELEASE_DM 0x2
|
|
#define RELEASE_OTHER 0x3
|
|
|
|
static const value_string release_reason_values[] = {
|
|
{ RELEASE_MGMT, "Management layer generated release" },
|
|
{ RELEASE_PHYS, "Physical layer alarm generated release" },
|
|
{ RELEASE_DM, "Specific to a request" },
|
|
{ RELEASE_OTHER, "Other reason" },
|
|
{ 0, NULL } };
|
|
|
|
#define RELEASE_REASON_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
|
|
#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)
|
|
{
|
|
gint offset = RELEASE_REASON_OFFSET;
|
|
if(iua_version == DRAFT) offset = tvb_get_ntohs(parameter_tvb, RELEASE_REASON_LENGTH_OFFSET)+8;
|
|
proto_tree_add_item(parameter_tree, hf_release_reason, parameter_tvb, offset, RELEASE_REASON_LENGTH, FALSE);
|
|
if(iua_version != DRAFT)
|
|
proto_item_append_text(parameter_item, " (%s)",
|
|
val_to_str(tvb_get_ntohl(parameter_tvb, offset), release_reason_values, "Unknown release reason"));
|
|
}
|
|
/*----------------------Release Indication,Request (Draft,RFC)-----------------*/
|
|
|
|
/*----------------------Link Status Start,Stop Report (Draft,RFC)--------------*/
|
|
/*
|
|
* No additional Parameter
|
|
*/
|
|
/*----------------------Link Status Start,Stop Report (Draft,RFC)--------------*/
|
|
|
|
/*----------------------Link Status Indication (Draft,RFC)---------------------*/
|
|
|
|
/* define parameters for Link Status Indication */
|
|
#define LINK_STATUS_OPERTIONAL 0x0
|
|
#define LINK_STATUS_NON_OPERTIONAL 0x1
|
|
|
|
static const value_string link_status_values[] = {
|
|
{ LINK_STATUS_OPERTIONAL, "Link is in operation" },
|
|
{ LINK_STATUS_NON_OPERTIONAL, "Link is not in operation" },
|
|
{ 0, NULL } };
|
|
|
|
#define LINK_STATUS_OFFSET PARAMETER_VALUE_OFFSET
|
|
#define LINK_STATUS_LENGTH 4
|
|
|
|
static void
|
|
dissect_link_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
proto_tree_add_item(parameter_tree, hf_link_status, parameter_tvb, LINK_STATUS_OFFSET, LINK_STATUS_LENGTH, FALSE);
|
|
proto_item_append_text(parameter_item, " (%s)",
|
|
val_to_str(tvb_get_ntohl(parameter_tvb, LINK_STATUS_OFFSET),link_status_values, "Unknown Link status"));
|
|
}
|
|
/*----------------------Link Status Indication (Draft,RFC)---------------------*/
|
|
|
|
/*----------------------Sa-Bit (Draft,RFC)-------------------------------------*/
|
|
|
|
/* define parameter for sa-bit message */
|
|
#define SA_BIT_ID_ZERO 0x0
|
|
#define SA_BIT_ID_ONE 0x1
|
|
#define SA_BIT_VALUE_SA7 0x7
|
|
|
|
static const value_string sa_bit_values[] = {
|
|
{ SA_BIT_ID_ZERO, "set to ZERO" },
|
|
{ SA_BIT_ID_ONE, "set to ONE" },
|
|
{ SA_BIT_VALUE_SA7, "Sa7 Bit" },
|
|
{ 0, NULL } };
|
|
|
|
#define SA_BIT_ID_OFFSET PARAMETER_VALUE_OFFSET
|
|
#define SA_BIT_ID_LENGTH 2
|
|
#define SA_BIT_VALUE_OFFSET (SA_BIT_ID_OFFSET + SA_BIT_ID_LENGTH)
|
|
#define SA_BIT_VALUE_LENGTH 2
|
|
|
|
static void
|
|
dissect_sa_bit_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
proto_tree_add_item(parameter_tree, hf_sa_bit_id, parameter_tvb, SA_BIT_ID_OFFSET, SA_BIT_ID_LENGTH, FALSE);
|
|
proto_tree_add_item(parameter_tree, hf_sa_bit_value, parameter_tvb, SA_BIT_VALUE_OFFSET, SA_BIT_VALUE_LENGTH, FALSE);
|
|
proto_item_append_text(parameter_item, " (%s %s)",
|
|
val_to_str(tvb_get_ntohs(parameter_tvb, SA_BIT_ID_OFFSET), sa_bit_values, "unknown"),
|
|
val_to_str(tvb_get_ntohs(parameter_tvb, SA_BIT_VALUE_OFFSET), sa_bit_values, "unknown Bit"));
|
|
|
|
}
|
|
/*----------------------Sa-Bit (Draft,RFC)-------------------------------------*/
|
|
|
|
/*----------------------Error Indication (RFC)---------------------------------*/
|
|
|
|
#define ERROR_REASON_OVERLOAD 0x1
|
|
|
|
static const value_string error_reason_values[] = {
|
|
{ ERROR_REASON_OVERLOAD, "C-Channel is in overload state" },
|
|
{ 0, NULL } };
|
|
|
|
#define ERROR_REASON_LENGTH 4
|
|
#define ERROR_REASON_OFFSET PARAMETER_VALUE_OFFSET
|
|
|
|
static void
|
|
dissect_error_indication_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
proto_tree_add_item(parameter_tree, hf_error_reason, parameter_tvb, ERROR_REASON_OFFSET, ERROR_REASON_LENGTH, FALSE);
|
|
proto_item_append_text(parameter_item, " (%s)",
|
|
val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_REASON_OFFSET), error_reason_values, "unknown"));
|
|
}
|
|
/*----------------------Error Indication (RFC)---------------------------------*/
|
|
|
|
#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);
|
|
if(iua_version == DRAFT) info_string_length += 4;
|
|
if(info_string_length > 4){
|
|
info_string_length -= PARAMETER_HEADER_LENGTH;
|
|
proto_tree_add_item(parameter_tree, hf_info_string, parameter_tvb, INFO_STRING_OFFSET, info_string_length, FALSE);
|
|
proto_item_append_text(parameter_item, " (%.*s)", info_string_length,
|
|
(const char *)tvb_get_ptr(parameter_tvb, INFO_STRING_OFFSET, info_string_length));
|
|
}
|
|
}
|
|
|
|
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, FALSE);
|
|
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 ASP_MSG_PARAMETER_TAG 0x02
|
|
#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_DOWN_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 LINK_STATUS_PARAMETER_TAG 0x11
|
|
#define SA_BIT_STATUS_PARAMETER_TAG 0x12
|
|
#define ERROR_INDICATION_PARAMETER_TAG 0x13
|
|
|
|
static const value_string parameter_tag_values[] = {
|
|
{ INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "V5UA Interface Identifier (int)" },
|
|
{ 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_DOWN_REASON_PARAMETER_TAG, "ASP DOWN 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" },
|
|
{ LINK_STATUS_PARAMETER_TAG, "Link status" },
|
|
{ SA_BIT_STATUS_PARAMETER_TAG, "SA-Bit status" },
|
|
{ ERROR_INDICATION_PARAMETER_TAG, "Error reason" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string parameter_tag_draft_values[] = {
|
|
{ INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "V5UA Interface Identifier (int)" },
|
|
{ ASP_MSG_PARAMETER_TAG, "ASP Adaption Layer ID" },
|
|
{ TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "SCN Protocol Identifier" },
|
|
{ INFO_PARAMETER_TAG, "Info" },
|
|
{ LINK_STATUS_PARAMETER_TAG, "Link status" },
|
|
{ SA_BIT_STATUS_PARAMETER_TAG, "SA-Bit status" },
|
|
{ ERROR_INDICATION_PARAMETER_TAG, "Error reason" },
|
|
{ 0, NULL } };
|
|
|
|
|
|
|
|
static void
|
|
dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *v5ua_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);
|
|
/* on IUA-Draft messages the message length not including the message header */
|
|
if((iua_version==DRAFT)&&(tag<=0x4)){
|
|
/* at V5UA Header, length of header and length of DLCI+EFA must be added */
|
|
if(tag==0x1) length += 8;
|
|
/* at ASP message tags only length of header must be added */
|
|
else if(tag<=0x4) length += PARAMETER_HEADER_LENGTH;
|
|
/* for following message-tags are no length information available. Only in common msg header */
|
|
if((msg_class==0 || msg_class==1 || msg_class==9) && msg_type<=10)
|
|
length = msg_length;
|
|
}
|
|
padding_length = tvb_length(parameter_tvb) - length;
|
|
|
|
/* create proto_tree stuff */
|
|
|
|
switch(iua_version){
|
|
case RFC:
|
|
parameter_item = proto_tree_add_text(v5ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), "%s",
|
|
val_to_str(tag, parameter_tag_values, "Unknown parameter"));
|
|
parameter_tree = proto_item_add_subtree(parameter_item, ett_v5ua_parameter);
|
|
|
|
/* add tag to the v5ua tree */
|
|
proto_tree_add_item(parameter_tree, hf_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH, FALSE);
|
|
break;
|
|
|
|
case DRAFT:
|
|
default:
|
|
parameter_item = proto_tree_add_text(v5ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), "%s",
|
|
val_to_str(tag, parameter_tag_draft_values, "Unknown parameter"));
|
|
parameter_tree = proto_item_add_subtree(parameter_item, ett_v5ua_parameter);
|
|
|
|
/* add tag to the v5ua tree */
|
|
proto_tree_add_item(parameter_tree, hf_parameter_tag_draft, parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH, FALSE);
|
|
break;
|
|
|
|
};
|
|
|
|
/* add length to the v5ua tree */
|
|
proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, FALSE);
|
|
|
|
switch(tag) {
|
|
case INT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
|
|
if(iua_version == RFC) dissect_int_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
if(iua_version == DRAFT){
|
|
dissect_int_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
dissect_dlci_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
|
|
/* for the following parameters no tag- and length-informations available. Parameters must be dissect with info from common msg header */
|
|
if(msg_class==0 && msg_type==0) dissect_draft_error_code_parameter(parameter_tvb, parameter_tree);
|
|
if(msg_class==1) dissect_draft_tei_status_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
if(msg_class==9){
|
|
if(msg_type==1||msg_type==2||msg_type==3||msg_type==4){
|
|
guint16 length, offset;
|
|
tvbuff_t *layer3_data_tvb;
|
|
offset = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) + 8;
|
|
length = msg_length - offset;
|
|
if(length > 0){
|
|
if(tvb_get_guint8(parameter_tvb, offset) == 0x48){
|
|
layer3_data_tvb = tvb_new_subset(parameter_tvb, offset, length, length);
|
|
dissect_layer3_message(layer3_data_tvb, v5ua_tree, parameter_item, pinfo);
|
|
}
|
|
}
|
|
}
|
|
else if(msg_type==8||msg_type==10) dissect_release_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
}
|
|
}
|
|
break;
|
|
case ASP_MSG_PARAMETER_TAG:
|
|
dissect_asp_msg_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
|
|
if(iua_version == RFC)
|
|
dissect_text_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
if(iua_version == DRAFT)
|
|
dissect_scn_protocol_id_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, parameter_item);
|
|
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_DOWN_REASON_PARAMETER_TAG:
|
|
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_layer3_message(parameter_tvb, v5ua_tree, parameter_item, pinfo);
|
|
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 LINK_STATUS_PARAMETER_TAG:
|
|
dissect_link_status_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case SA_BIT_STATUS_PARAMETER_TAG:
|
|
dissect_sa_bit_status_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case ERROR_INDICATION_PARAMETER_TAG:
|
|
dissect_error_indication_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, FALSE);
|
|
}
|
|
}
|
|
|
|
/* dissect the V5UA-Parameters into subsets which are separated by Tag-Length-Header and call up the dissector for the subsets */
|
|
static void
|
|
dissect_parameters(tvbuff_t *parameters_tvb, packet_info *pinfo, proto_tree *tree _U_, proto_tree *v5ua_tree)
|
|
{
|
|
gint tag, offset, length, total_length, remaining_length;
|
|
tvbuff_t *parameter_tvb;
|
|
|
|
|
|
offset = 0;
|
|
while((remaining_length = tvb_length_remaining(parameters_tvb, offset))) {
|
|
tag = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_TAG_OFFSET);
|
|
length = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET);
|
|
if(iua_version==DRAFT){
|
|
if(tag==0x1) length += 8; /* V5UA Header */
|
|
else if(tag<=0x4) length += PARAMETER_HEADER_LENGTH; /* ASP MSGs */
|
|
|
|
/* add the parameters which are not separated by tag-length-header to the V5UA header */
|
|
if((msg_class==0 || msg_class==1 || msg_class==9)&&msg_type<=10)
|
|
length = msg_length;
|
|
}
|
|
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, v5ua_tree);
|
|
/* get rid of the handled parameter */
|
|
offset += total_length;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/* define the common header fields of V5UA MSG */
|
|
#define COMMON_HEADER_VERSION_LENGTH 1
|
|
#define COMMON_HEADER_RESERVED_LENGTH 1
|
|
#define COMMON_HEADER_MSG_CLASS_LENGTH 1
|
|
#define COMMON_HEADER_MSG_TYPE_LENGTH 1
|
|
#define COMMON_HEADER_MSG_LENGTH_LENGTH 4
|
|
#define COMMON_HEADER_LENGTH (COMMON_HEADER_VERSION_LENGTH + COMMON_HEADER_RESERVED_LENGTH +\
|
|
COMMON_HEADER_MSG_CLASS_LENGTH + COMMON_HEADER_MSG_TYPE_LENGTH +\
|
|
COMMON_HEADER_MSG_LENGTH_LENGTH)
|
|
|
|
/* define the offsets of common header */
|
|
#define COMMON_HEADER_OFFSET 0
|
|
#define COMMON_HEADER_VERSION_OFFSET COMMON_HEADER_OFFSET
|
|
#define COMMON_HEADER_RESERVED_OFFSET (COMMON_HEADER_VERSION_OFFSET + COMMON_HEADER_VERSION_LENGTH)
|
|
#define COMMON_HEADER_MSG_CLASS_OFFSET (COMMON_HEADER_RESERVED_OFFSET + COMMON_HEADER_RESERVED_LENGTH)
|
|
#define COMMON_HEADER_MSG_TYPE_OFFSET (COMMON_HEADER_MSG_CLASS_OFFSET + COMMON_HEADER_MSG_CLASS_LENGTH)
|
|
#define COMMON_HEADER_MSG_LENGTH_OFFSET (COMMON_HEADER_MSG_TYPE_OFFSET + COMMON_HEADER_MSG_TYPE_LENGTH)
|
|
#define COMMON_HEADER_PARAMETERS_OFFSET (COMMON_HEADER_OFFSET + COMMON_HEADER_LENGTH)
|
|
|
|
/* version of V5UA protocol */
|
|
#define V5UA_PROTOCOL_VERSION_RELEASE_1 1
|
|
|
|
static const value_string v5ua_protocol_version_values[] = {
|
|
{ V5UA_PROTOCOL_VERSION_RELEASE_1, "Release 1" },
|
|
{ 0, NULL } };
|
|
|
|
/* define V5UA MSGs */
|
|
#define MSG_CLASS_MGMT_MSG 0
|
|
#define MSG_CLASS_MGMT_MSG_DRAFT 1
|
|
#define MSG_CLASS_ASPSM_MSG 3
|
|
#define MSG_CLASS_ASPTM_MSG 4
|
|
#define MSG_CLASS_V5PTM_MSG_DRAFT 9
|
|
#define MSG_CLASS_V5PTM_MSG 14
|
|
|
|
static const value_string msg_class_values[] = {
|
|
{ MSG_CLASS_MGMT_MSG, "Management Messages" },
|
|
{ MSG_CLASS_MGMT_MSG_DRAFT,"Management Messages"},
|
|
{ MSG_CLASS_ASPSM_MSG, "ASP state maintenance message" },
|
|
{ MSG_CLASS_ASPTM_MSG, "ASP traffic maintenance message" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT, "V5 Boundary Primitives Transport Message" },
|
|
{ MSG_CLASS_V5PTM_MSG, "V5 Boundary Primitives Transport Message" },
|
|
{ 0, NULL } };
|
|
|
|
/* message types for MGMT messages */
|
|
#define MGMT_MSG_TYPE_ERR 0
|
|
#define MGMT_MSG_TYPE_NTFY 1
|
|
#define MGMT_MSG_TYPE_TEI_STATUS_REQ 2
|
|
#define MGMT_MSG_TYPE_TEI_STATUS_CON 3
|
|
#define MGMT_MSG_TYPE_TEI_STATUS_IND 4
|
|
/* MGMT messages for Nortel draft version*/
|
|
#define MGMT_MSG_DRAFT_TYPE_TEI_STATUS_REQ 1
|
|
#define MGMT_MSG_DRAFT_TYPE_TEI_STATUS_CON 2
|
|
#define MGMT_MSG_DRAFT_TYPE_TEI_STATUS_IND 3
|
|
|
|
|
|
/* message types for ASPSM messages */
|
|
#define ASPSM_MSG_TYPE_UP 1
|
|
#define ASPSM_MSG_TYPE_DOWN 2
|
|
#define ASPSM_MSG_TYPE_BEAT 3
|
|
#define ASPSM_MSG_TYPE_UP_ACK 4
|
|
#define ASPSM_MSG_TYPE_DOWN_ACK 5
|
|
#define ASPSM_MSG_TYPE_BEAT_ACK 6
|
|
|
|
/* message types for ASPTM messages */
|
|
#define ASPTM_MSG_TYPE_ACTIVE 1
|
|
#define ASPTM_MSG_TYPE_INACTIVE 2
|
|
#define ASPTM_MSG_TYPE_ACTIVE_ACK 3
|
|
#define ASPTM_MSG_TYPE_INACTIVE_ACK 4
|
|
|
|
/* message types for V5PTM messages */
|
|
#define V5PTM_MSG_TYPE_DATA_REQUEST 1
|
|
#define V5PTM_MSG_TYPE_DATA_INDICATION 2
|
|
#define V5PTM_MSG_TYPE_UNIT_DATA_REQUEST 3
|
|
#define V5PTM_MSG_TYPE_UNIT_DATA_INDICATION 4
|
|
#define V5PTM_MSG_TYPE_ESTABLISH_REQUEST 5
|
|
#define V5PTM_MSG_TYPE_ESTABLISH_CONFIRM 6
|
|
#define V5PTM_MSG_TYPE_ESTABLISH_INDICATION 7
|
|
#define V5PTM_MSG_TYPE_RELEASE_REQUEST 8
|
|
#define V5PTM_MSG_TYPE_RELEASE_CONFIRM 9
|
|
#define V5PTM_MSG_TYPE_RELEASE_INDICATION 10
|
|
#define V5PTM_MSG_TYPE_LINK_STATUS_START_REPORTING 11
|
|
#define V5PTM_MSG_TYPE_LINK_STATUS_STOP_REPORTING 12
|
|
#define V5PTM_MSG_TYPE_LINK_STATUS_INDICATION 13
|
|
#define V5PTM_MSG_TYPE_SA_BIT_SET_REQUEST 14
|
|
#define V5PTM_MSG_TYPE_SA_BIT_SET_CONFIRM 15
|
|
#define V5PTM_MSG_TYPE_SA_BIT_STATUS_REQUEST 16
|
|
#define V5PTM_MSG_TYPE_SA_BIT_STATUS_INDICATION 17
|
|
#define V5PTM_MSG_TYPE_ERROR_INDICATION 18
|
|
|
|
static const value_string msg_class_type_values[] = {
|
|
{ MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_ERR, "Error" },
|
|
{ MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_NTFY, "Notify" },
|
|
{ MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_STATUS_REQ, "TEI status request" },
|
|
{ MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_STATUS_CON, "TEI status confirmation" },
|
|
{ MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_STATUS_IND, "TEI status indication" },
|
|
|
|
{ MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_REQ, "TEI status request" },
|
|
{ MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_CON, "TEI status confimation" },
|
|
{ MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_IND, "TEI status indication" },
|
|
|
|
{ MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_UP, "ASP up" },
|
|
{ MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_DOWN, "ASP down" },
|
|
{ MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_BEAT, "Heartbeat" },
|
|
{ MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_UP_ACK, "ASP up ack" },
|
|
{ MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_DOWN_ACK, "ASP down ack" },
|
|
{ MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_BEAT_ACK, "Heartbeat ack" },
|
|
|
|
{ MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_ACTIVE , "ASP active" },
|
|
{ MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_INACTIVE , "ASP inactive" },
|
|
{ MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_ACTIVE_ACK , "ASP active ack" },
|
|
{ MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_INACTIVE_ACK , "ASP inactive ack" },
|
|
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_DATA_REQUEST, "Data request" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_DATA_INDICATION, "Data indication" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_UNIT_DATA_REQUEST, "Unit data request" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_UNIT_DATA_INDICATION, "Unit data indication" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ESTABLISH_REQUEST, "Establish request" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ESTABLISH_INDICATION, "Establish indication" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_RELEASE_REQUEST, "Release request" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_RELEASE_CONFIRM, "Release confirmation" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_RELEASE_INDICATION, "Release indication" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_LINK_STATUS_START_REPORTING,"Link status start reporting" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_LINK_STATUS_STOP_REPORTING, "Link status stop reporting" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_LINK_STATUS_INDICATION, "Link status indication" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_REQUEST, "Sa-Bit set request" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_CONFIRM, "Sa-Bit set confirm" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_REQUEST, "Sa-Bit status request" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_INDICATION, "Sa-Bit status indication" },
|
|
{ MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ERROR_INDICATION, "Error indication" },
|
|
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_DATA_REQUEST, "Data request" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_DATA_INDICATION, "Data indication" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_UNIT_DATA_REQUEST, "Unit data request" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_UNIT_DATA_INDICATION, "Unit data indication" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_REQUEST, "Establish request" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_INDICATION, "Establish indication" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_REQUEST, "Release request" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_CONFIRM, "Release confirmation" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_INDICATION, "Release indication" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_START_REPORTING,"Link status start reporting" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_STOP_REPORTING, "Link status stop reporting" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_INDICATION, "Link status indication" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_REQUEST, "Sa-Bit set request" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_CONFIRM, "Sa-Bit set confirm" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_REQUEST, "Sa-Bit status request" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_INDICATION, "Sa-Bit status indication" },
|
|
{ MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ERROR_INDICATION, "Error indication" },
|
|
|
|
{ 0, NULL } };
|
|
|
|
|
|
static void
|
|
dissect_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *v5ua_tree)
|
|
{
|
|
proto_item *common_header_item;
|
|
proto_tree *common_header_tree;
|
|
|
|
guint8 message_class, message_type;
|
|
|
|
message_class = tvb_get_guint8(common_header_tvb, COMMON_HEADER_MSG_CLASS_OFFSET);
|
|
message_type = tvb_get_guint8(common_header_tvb, COMMON_HEADER_MSG_TYPE_OFFSET);
|
|
|
|
/* Add message type into info column */
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(message_class * 256 + message_type, msg_class_type_values, "UNKNOWN"));
|
|
col_append_str(pinfo->cinfo, COL_INFO, " ");
|
|
}
|
|
|
|
if (v5ua_tree) {
|
|
|
|
/* create proto_tree stuff */
|
|
common_header_item = proto_tree_add_text(v5ua_tree, common_header_tvb, COMMON_HEADER_OFFSET, tvb_length(common_header_tvb),"Common Msg-Header");
|
|
common_header_tree = proto_item_add_subtree(common_header_item, ett_v5ua_common_header);
|
|
|
|
/* add the components of the common header to the protocol tree */
|
|
proto_tree_add_item(common_header_tree, hf_version, common_header_tvb, COMMON_HEADER_VERSION_OFFSET, COMMON_HEADER_VERSION_LENGTH, FALSE);
|
|
proto_tree_add_item(common_header_tree, hf_reserved, common_header_tvb, COMMON_HEADER_RESERVED_OFFSET, COMMON_HEADER_RESERVED_LENGTH, FALSE);
|
|
proto_tree_add_item(common_header_tree, hf_msg_class, common_header_tvb, COMMON_HEADER_MSG_CLASS_OFFSET, COMMON_HEADER_MSG_CLASS_LENGTH, FALSE);
|
|
proto_tree_add_uint_format(common_header_tree, hf_msg_type,
|
|
common_header_tvb, COMMON_HEADER_MSG_TYPE_OFFSET, COMMON_HEADER_MSG_TYPE_LENGTH,
|
|
message_type, "Message type: %s ( %u )",
|
|
val_to_str(message_class * 256 + message_type, msg_class_type_values, "reserved"), message_type);
|
|
proto_tree_add_uint(common_header_tree, hf_msg_type_id, common_header_tvb, COMMON_HEADER_MSG_TYPE_OFFSET, COMMON_HEADER_MSG_TYPE_LENGTH,
|
|
message_class * 256 + message_type);
|
|
proto_tree_add_item(common_header_tree, hf_msg_length, common_header_tvb, COMMON_HEADER_MSG_LENGTH_OFFSET, COMMON_HEADER_MSG_LENGTH_LENGTH, FALSE);
|
|
|
|
/* Add message type to the Common Msg-Header line */
|
|
proto_item_append_text(common_header_item, " (%s)",val_to_str(message_class * 256 + message_type, msg_class_type_values, "Unknown Msg-Type"));
|
|
}
|
|
|
|
/* the following info are required to dissect IUA-Draft messages.
|
|
In the DRAFT-Specification V5UA-Parameters are not separated by Tag-Length-Header (as defined in RFC-Spec) */
|
|
if (iua_version == DRAFT){
|
|
msg_class = message_class;
|
|
msg_type = message_type;
|
|
msg_length = tvb_get_ntohl (common_header_tvb, COMMON_HEADER_MSG_LENGTH_OFFSET);
|
|
}
|
|
}
|
|
|
|
/* dissect the V5UA-packet in two subsets: Common Msg-Header (used by all msgs) and V5UA-parameter */
|
|
static void
|
|
dissect_v5ua_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *v5ua_tree)
|
|
{
|
|
tvbuff_t *common_header_tvb, *parameters_tvb;
|
|
|
|
common_header_tvb = tvb_new_subset(tvb, COMMON_HEADER_OFFSET, COMMON_HEADER_LENGTH, COMMON_HEADER_LENGTH);
|
|
dissect_common_header(common_header_tvb, pinfo, v5ua_tree);
|
|
|
|
parameters_tvb = tvb_new_subset(tvb, COMMON_HEADER_LENGTH, -1, -1);
|
|
dissect_parameters(parameters_tvb, pinfo, tree, v5ua_tree);
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_v5ua(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
|
|
gint offset, remaining_length, length, tag, one_bit;
|
|
|
|
|
|
/* Set up structures needed to add the protocol subtree and manage it */
|
|
proto_tree *v5ua_tree;
|
|
proto_item *ti;
|
|
|
|
/* Make entries in Protocol column and Info column on summary display */
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "V5UA");
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
if (tree) {
|
|
/* create display subtree for the protocol */
|
|
ti = proto_tree_add_item(tree, proto_v5ua, tvb, 0, -1, FALSE);
|
|
v5ua_tree = proto_item_add_subtree(ti, ett_v5ua);
|
|
}
|
|
else {
|
|
v5ua_tree=NULL;
|
|
};
|
|
|
|
/* detect version of IUA */
|
|
iua_version = RFC;
|
|
offset = COMMON_HEADER_LENGTH;
|
|
|
|
remaining_length = tvb_length_remaining(tvb, offset);
|
|
|
|
while(remaining_length) {
|
|
tag = tvb_get_ntohs(tvb, offset);
|
|
/*0x01,0x03: Inerface Id (draft&RFC)*/
|
|
if(tag==0x1){
|
|
length = tvb_get_ntohs(tvb, offset+2);
|
|
tag = tvb_get_ntohs(tvb, offset+length);
|
|
/* tag 0x5 indicates the DLCI in the V5UA-Header accoriding to RFC spec */
|
|
if(tag==0x5){
|
|
remaining_length = FALSE;
|
|
}
|
|
else{
|
|
one_bit = tvb_get_guint8(tvb, offset+4+length+1);
|
|
/* no indication from DLCI by tag (in the V5UA-Header according DRAFT).
|
|
Thus the ONE-Bit within DLCI have to compare */
|
|
if((one_bit & 0x01) == 0x01){
|
|
iua_version = DRAFT;
|
|
remaining_length = FALSE;
|
|
}
|
|
/* an indication to incorrect bit in DLCI.
|
|
Must be include to decode an incorrect implemented message on Nortels PVG*/
|
|
else{
|
|
proto_item_append_text(v5ua_tree, " !! DLCI INCORRECT !!");
|
|
|
|
iua_version = DRAFT;
|
|
remaining_length = FALSE;
|
|
}
|
|
}
|
|
}
|
|
/*0x02: AL Id (draft) following after common msg header without V5UA header*/
|
|
else if(tag==0x02){
|
|
iua_version = DRAFT;
|
|
remaining_length = FALSE;
|
|
}
|
|
/*0x03: Text formatted IId SHALL not be supported by draft*/
|
|
else if(tag==0x03){
|
|
iua_version = RFC;
|
|
remaining_length = FALSE;
|
|
}
|
|
/*ASP, Notify and Error messages (RFC) only contain common msg header followed by parameter*/
|
|
else if(tag==0x04 || tag == 0x0a || tag == 0x0b || tag == 0x0c || tag == 0x0d){
|
|
remaining_length = FALSE;
|
|
}
|
|
else{
|
|
offset+=2;
|
|
remaining_length = tvb_length_remaining(tvb, offset);
|
|
}
|
|
/* add a notice for the draft version */
|
|
if(iua_version == DRAFT){
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "V5UA (draft)");
|
|
}
|
|
}
|
|
|
|
|
|
/* dissect the message */
|
|
dissect_v5ua_message(tvb, pinfo, tree, v5ua_tree);
|
|
}
|
|
|
|
|
|
|
|
/* Register the protocol with Wireshark */
|
|
|
|
/* this format is require because a script is used to build the C function
|
|
that calls all the protocol registration. */
|
|
|
|
|
|
void
|
|
proto_register_v5ua(void)
|
|
{
|
|
|
|
/* Setup list of header fields */
|
|
static hf_register_info hf[] = {
|
|
{ &hf_version,
|
|
{ "Version", "v5ua.version",
|
|
FT_UINT8, BASE_DEC, VALS(v5ua_protocol_version_values),0x0,
|
|
"", HFILL } },
|
|
{ &hf_reserved,
|
|
{ "Reserved", "v5ua.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_msg_class,
|
|
{ "Message class", "v5ua.msg_class",
|
|
FT_UINT8, BASE_DEC, VALS(msg_class_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_msg_type,
|
|
{ "Message Type", "v5ua.msg_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_msg_type_id,
|
|
{ "Message Type ID", "v5ua.msg_type_id",
|
|
FT_UINT8, BASE_DEC, VALS(msg_class_type_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_msg_length,
|
|
{ "Message length", "v5ua.msg_length",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_link_id,
|
|
{ "Link Identifier", "v5ua.link_id",
|
|
FT_UINT32, BASE_DEC, NULL, ~0x1f,
|
|
NULL, HFILL } },
|
|
{ &hf_chnl_id,
|
|
{ "Channel Identifier", "v5ua.channel_id",
|
|
FT_UINT8, BASE_DEC, NULL, 0x1f,
|
|
NULL, HFILL } },
|
|
{ &hf_adaptation_layer_id,
|
|
{ "Adaptation Layer ID", "v5ua.adaptation_layer_id",
|
|
FT_STRING, BASE_NONE,NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_text_if_id,
|
|
{ "Text interface identifier","v5ua.text_interface_id",
|
|
FT_STRING, BASE_NONE,NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_scn_protocol_id,
|
|
{ "SCN Protocol Identifier","v5ua.scn_protocol_id",
|
|
FT_STRING, BASE_NONE,NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_info_string,
|
|
{ "Info String", "v5ua.info_string",
|
|
FT_STRING, BASE_NONE,NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_dlci_zero_bit,
|
|
{ "Zero bit", "v5ua.dlci_zero_bit",
|
|
FT_BOOLEAN, 8, NULL, 0x01,
|
|
NULL, HFILL } },
|
|
{ &hf_dlci_spare_bit,
|
|
{ "Spare bit", "v5ua.dlci_spare_bit",
|
|
FT_BOOLEAN, 8, NULL, 0x02,
|
|
NULL, HFILL } },
|
|
{ &hf_dlci_sapi,
|
|
{ "SAPI", "v5ua.dlci_sapi",
|
|
FT_UINT8, BASE_HEX, NULL, 0xfc,
|
|
NULL, HFILL } },
|
|
{ &hf_dlci_one_bit,
|
|
{ "One bit", "v5ua.dlci_one_bit",
|
|
FT_BOOLEAN, 8, NULL, 0x01,
|
|
NULL, HFILL } },
|
|
{ &hf_dlci_tei,
|
|
{ "TEI", "v5ua.dlci_tei",
|
|
FT_UINT8, BASE_HEX, NULL, 0xfe,
|
|
NULL, HFILL } },
|
|
{ &hf_efa,
|
|
{ "Envelope Function Address","v5ua.efa",
|
|
FT_UINT16, BASE_DEC, VALS(efa_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_spare_efa,
|
|
{ "Envelope Function Address (spare)","v5ua.efa",
|
|
FT_UINT16, BASE_DEC, NULL, ~7,
|
|
NULL, HFILL } },
|
|
{ &hf_asp_reason,
|
|
{ "Reason", "v5ua.asp_reason",
|
|
FT_UINT32, BASE_HEX, VALS(asp_reason_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_release_reason,
|
|
{ "Release Reason", "v5ua.release_reason",
|
|
FT_UINT32, BASE_HEX, VALS(release_reason_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_tei_status,
|
|
{ "TEI status", "v5ua.tei_status",
|
|
FT_UINT32, BASE_HEX, VALS(tei_status_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_tei_draft_status,
|
|
{ "TEI status", "v5ua.tei_draft_status",
|
|
FT_UINT32, BASE_HEX, VALS(tei_draft_status_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_link_status,
|
|
{ "Link Status", "v5ua.link_status",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_sa_bit_id,
|
|
{ "BIT ID", "v5ua.sa_bit_id",
|
|
FT_UINT16, BASE_HEX, VALS(sa_bit_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_sa_bit_value,
|
|
{ "Bit Value", "v5ua.sa_bit_value",
|
|
FT_UINT16, BASE_HEX, VALS(sa_bit_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_parameter_tag,
|
|
{ "Parameter Tag", "v5ua.parameter_tag",
|
|
FT_UINT16, BASE_HEX, VALS(parameter_tag_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_parameter_tag_draft,
|
|
{ "Parameter Tag", "v5ua.parameter_tag",
|
|
FT_UINT16, BASE_HEX, VALS(parameter_tag_draft_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_parameter_length,
|
|
{ "Parameter length", "v5ua.parameter_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_parameter_value,
|
|
{ "Parameter value", "v5ua.parameter_value",
|
|
FT_BYTES, BASE_NONE,NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_parameter_padding,
|
|
{ "Parameter padding", "v5ua.parameter_padding",
|
|
FT_BYTES, BASE_NONE,NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_diagnostic_info,
|
|
{ "Diagnostic Information", "v5ua.diagnostic_info",
|
|
FT_BYTES, BASE_NONE,NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_if_range_start,
|
|
{ "Interface range Start", "v5ua.interface_range_start",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_if_range_end,
|
|
{ "Interface range End", "v5ua.interface_range_end",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_heartbeat_data,
|
|
{ "Heartbeat data", "v5ua.heartbeat_data",
|
|
FT_BYTES, BASE_NONE,NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_traffic_mode_type,
|
|
{ "Traffic mode type", "v5ua.traffic_mode_type",
|
|
FT_UINT32, BASE_HEX, VALS(traffic_mode_type_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_error_code,
|
|
{ "Error code", "v5ua.error_code",
|
|
FT_UINT32, BASE_HEX, VALS(error_code_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_draft_error_code,
|
|
{ "Error code (draft)", "v5ua.draft_error_code",
|
|
FT_UINT32, BASE_HEX, VALS(draft_error_code_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_status_type,
|
|
{ "Status type", "v5ua.status_type",
|
|
FT_UINT16, BASE_DEC, VALS(status_type_values), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_status_id,
|
|
{ "Status identification", "v5ua.status_id",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_error_reason,
|
|
{ "Error Reason", "v5ua.error_reason",
|
|
FT_UINT32, BASE_HEX, VALS(error_reason_values), 0x0,
|
|
NULL, HFILL } },
|
|
|
|
/* header fields for layer 3 content*/
|
|
{ &hf_l3_protocol_discriminator,
|
|
{ "Protocol Discriminator", "v5ua.l3_protocol_disc",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_l3_adress,
|
|
{ "Layer3 address", "v5ua.l3_address",
|
|
FT_UINT8, BASE_HEX, NULL, 0xfe,
|
|
NULL, HFILL } },
|
|
{ &hf_l3_low_adress,
|
|
{ "Layer3 low address", "v5ua.l3_low_address",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_msg_type,
|
|
{ "Layer3 message type", "v5ua.l3_msg_type",
|
|
FT_UINT8, BASE_HEX, VALS(l3_msg_type_values), 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_info_element,
|
|
{ "Layer3 information element", "v5ua.l3_info_element",
|
|
FT_UINT8, BASE_HEX, VALS(l3_info_element_values), 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_line_info,
|
|
{ "Line_Information", "v5ua.l3_line_info",
|
|
FT_UINT8, BASE_HEX, VALS(l3_line_info_values), 0x0f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_cad_ringing,
|
|
{"Cadenced ringing type", "v5ua.l3_cad_ringing",
|
|
FT_UINT8, BASE_HEX, NULL, 0x7f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_pulse_type,
|
|
{ "Pulse Type", "v5ua.l3_pulse_type",
|
|
FT_UINT8, BASE_HEX, VALS(l3_pulse_type_values), 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_suppression_indicator,
|
|
{ "Suppression indicator", "v5ua.l3_suppression_indicator",
|
|
FT_UINT8, BASE_HEX, VALS(l3_suppression_indication_values),0x60,
|
|
NULL, HFILL } },
|
|
{&hf_l3_pulse_duration,
|
|
{ "Pulse duration type", "v5ua.l3_pulse_duration",
|
|
FT_UINT8, BASE_HEX, NULL, 0x1f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_ack_request_indicator,
|
|
{ "Ack request indicator", "v5ua.l3_ack_request_indicator",
|
|
FT_UINT8, BASE_HEX, VALS(l3_ack_request_indication_values),0x60,
|
|
NULL, HFILL } },
|
|
{&hf_l3_number_of_pulses,
|
|
{ "Number of pulses", "v5ua.l3_number_of_pulses",
|
|
FT_UINT8, BASE_DEC, NULL, 0x1f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_steady_signal,
|
|
{ "Steady Signal", "v5ua.l3_steady_signal",
|
|
FT_UINT8, BASE_HEX, VALS(l3_steady_signal_values), 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_auto_signalling_sequence,
|
|
{ "Autonomous signalling sequence","v5ua.l3_auto_signalling_sequence",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_sequence_number,
|
|
{ "Sequence number", "v5ua.l3_sequence_number",
|
|
FT_UINT8, BASE_HEX, NULL, 0x7f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_pulse_notify,
|
|
{ "Pulse notification", "v5ua.l3_pulse_notification",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_sequence_response,
|
|
{ "Sequence response", "v5ua.l3_sequence_response",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_digit_ack,
|
|
{ "Digit ack request indication","v5ua.l3_digit_ack",
|
|
FT_UINT8, BASE_HEX, VALS(l3_digit_ack_values), 0x40,
|
|
NULL, HFILL } },
|
|
{&hf_l3_digit_info,
|
|
{ "Digit information", "v5ua.l3_digit_info",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_res_unavailable,
|
|
{ "Resource unavailable", "v5ua.l3_res_unavailable",
|
|
FT_STRING, BASE_NONE,NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_state,
|
|
{ "PSTN FSM state", "v5ua.l3_state",
|
|
FT_UINT8, BASE_HEX, VALS(l3_state_values), 0x0f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_cause_type,
|
|
{ "Cause type", "v5ua.l3_cause_type",
|
|
FT_UINT8, BASE_HEX, VALS(l3_cause_type_values), 0x7f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_link_control_function,
|
|
{ "Link control function","v5ua.l3_link_control_function",
|
|
FT_UINT8, BASE_HEX, VALS(l3_link_control_function_values),0x7f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_pstn_user_port_id,
|
|
{ "PSTN User Port identification Value","v5ua.l3_pstn_user_port_id",
|
|
FT_UINT8, BASE_HEX, NULL, 0xfe,
|
|
NULL, HFILL } },
|
|
{&hf_l3_pstn_user_port_id_lower,
|
|
{ "PSTN User Port Identification Value (lower)","v5ua.l3_pstn_user_port_id_lower",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_isdn_user_port_id,
|
|
{ "ISDN User Port Identification Value","v5ua.l3_isdn_user_port_id",
|
|
FT_UINT8, BASE_HEX, NULL, 0xfc,
|
|
NULL, HFILL } },
|
|
{&hf_l3_isdn_user_port_id_lower,
|
|
{ "ISDN User Port Identification Value (lower)","v5ua.l3_user_port_id_lower",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0fe,
|
|
NULL, HFILL } },
|
|
{&hf_l3_isdn_user_port_ts_num,
|
|
{ "ISDN user port time slot number","v5ua.l3_isdn_user_port_ts_num",
|
|
FT_UINT8, BASE_HEX, NULL, 0x1f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_override,
|
|
{ "Override", "v5ua.l3_override",
|
|
FT_BOOLEAN, 8, NULL, 0x20,
|
|
NULL, HFILL } },
|
|
{&hf_l3_v5_link_id,
|
|
{ "V5 2048 kbit/s Link Identifier", "v5ua.l3_link_id",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_v5_time_slot,
|
|
{ "V5 Time Slot Number", "v5ua.l3_v5_time_slot",
|
|
FT_UINT8, BASE_DEC, NULL, 0x1f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_reject_cause_type,
|
|
{ "Reject cause type", "v5ua.l3_reject_cause_type",
|
|
FT_UINT8, BASE_HEX, VALS(l3_reject_cause_type_values),0x7f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_bcc_protocol_error_cause,
|
|
{ "BCC Protocol error cause type", "v5ua.l3_bcc_protocol_cause",
|
|
FT_UINT8, BASE_HEX, VALS(l3_bcc_protocol_error_cause_type_values),0x7f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_connection_incomplete_reason,
|
|
{ "Reason", "v5ua.l3_connection_incomplete_reason",
|
|
FT_UINT8, BASE_HEX, VALS(l3_connection_incomplete_reason_values), 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_control_function_element,
|
|
{ "Control function element", "v5ua.l3_control_function_element",
|
|
FT_UINT8, BASE_HEX, VALS(l3_control_function_element_values), 0x7f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_control_function_id,
|
|
{ "Control function ID", "v5ua.l3_control_function",
|
|
FT_UINT8, BASE_HEX, VALS(l3_control_function_id_values), 0x7f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_variant,
|
|
{ "Variant", "v5ua.l3_variant",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_if_id,
|
|
{ "Interface ID", "v5ua.l3_interface_id",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{&hf_l3_performance_grading,
|
|
{ "Performance grading", "v5ua.l3_performance_grading",
|
|
FT_UINT8, BASE_HEX, VALS(l3_performance_grading_values), 0x0f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_cp_rejection_cause,
|
|
{ "Rejection cause", "v5ua.l3_cp_rejection_cause",
|
|
FT_UINT8, BASE_HEX, VALS(l3_cp_rejection_cause_values), 0x0f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_pstn_sequence_number,
|
|
{ "Sequence number", "v5ua.l3_pstn_sequence_number",
|
|
FT_UINT8, BASE_HEX, NULL, 0x7f,
|
|
NULL, HFILL } },
|
|
{&hf_l3_duration_type,
|
|
{ "Duration Type", "v5ua.l3_duration_type",
|
|
FT_UINT8, BASE_HEX, NULL, 0x3f,
|
|
NULL, HFILL } }
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_v5ua,
|
|
&ett_v5ua_common_header,
|
|
&ett_v5ua_parameter,
|
|
&ett_v5ua_layer3
|
|
};
|
|
|
|
/* Register the protocol name and description */
|
|
proto_v5ua = proto_register_protocol("V5.2-User Adaptation Layer", "V5UA", "v5ua");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_v5ua, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
|
|
/* In RFC specification the SCTP registered User Port Number Assignment for V5UA is 5675 */
|
|
#define SCTP_PORT_V5UA_RFC 5675
|
|
#define SCTP_PORT_V5UA_DRAFT 10001
|
|
|
|
void
|
|
proto_reg_handoff_v5ua(void)
|
|
{
|
|
dissector_handle_t v5ua_handle;
|
|
|
|
v5ua_handle = create_dissector_handle(dissect_v5ua, proto_v5ua);
|
|
q931_handle = find_dissector("q931");
|
|
|
|
dissector_add("sctp.port", SCTP_PORT_V5UA_DRAFT, v5ua_handle);
|
|
dissector_add("sctp.port", SCTP_PORT_V5UA_RFC, v5ua_handle);
|
|
dissector_add("sctp.ppi", V5UA_PAYLOAD_PROTOCOL_ID, v5ua_handle);
|
|
}
|