1e60d63c8c
This saves many dissectors the need to find the data dissector and store a handle to it. There were also some that were finding it, but not using it. For others this was the only reason for their handoff function, so it could be eliminated. Change-Id: I5d3f951ee1daa3d30c060d21bd12bbc881a8027b Reviewed-on: https://code.wireshark.org/review/14530 Petri-Dish: Michael Mann <mmann78@netscape.net> Reviewed-by: Michael Mann <mmann78@netscape.net>
1010 lines
54 KiB
C
1010 lines
54 KiB
C
/* packet-iua.c
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* Routines for ISDN Q.921-User Adaptation Layer dissection
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*
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* It is hopefully (needs testing) compliant to
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* http://www.ietf.org/rfc/rfc3057.txt
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* http://www.ietf.org/internet-drafts/draft-ietf-sigtran-iua-imp-guide-01.txt
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* To do: - provide better handling of length parameters
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*
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* Copyright 2002, Michael Tuexen <tuexen [AT] fh-muenster.de>
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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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* Copied from README.developer
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/sctpppids.h>
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#include <epan/lapd_sapi.h>
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#include <wsutil/str_util.h>
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void proto_register_iua(void);
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void proto_reg_handoff_iua(void);
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static module_t *iua_module;
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static dissector_table_t lapd_gsm_sapi_dissector_table;
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/* Whether to use GSM SAPI vals or not */
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static gboolean global_iua_gsm_sapis = TRUE;
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/* Initialize the protocol and registered fields */
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static int proto_iua = -1;
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static int hf_int_interface_id = -1;
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static int hf_text_interface_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_gsm_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_dlci_spare = -1;
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static int hf_diag_info = -1;
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static int hf_interface_range_start = -1;
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static int hf_interface_range_end = -1;
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static int hf_heartbeat_data = -1;
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static int hf_asp_reason = -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_error_code_ig = -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_release_reason = -1;
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static int hf_tei_status = -1;
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static int hf_asp_id = -1;
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static int hf_parameter_tag = -1;
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static int hf_parameter_tag_ig = -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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static int hf_version = -1;
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static int hf_reserved = -1;
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static int hf_message_class = -1;
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static int hf_message_type = -1;
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static int hf_message_length = -1;
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/* Initialize the subtree pointers */
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static gint ett_iua = -1;
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static gint ett_iua_parameter = -1;
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/* stores the current SAPI value */
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static guint8 sapi_val;
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static gboolean sapi_val_assigned = FALSE;
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/* option setable via preferences, default is plain RFC 3057 */
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static gboolean support_IG = FALSE;
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static dissector_handle_t q931_handle;
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static dissector_handle_t x25_handle;
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#define ADD_PADDING(x) ((((x) + 3) >> 2) << 2)
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#define PARAMETER_TAG_LENGTH 2
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#define PARAMETER_LENGTH_LENGTH 2
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#define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
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#define PARAMETER_TAG_OFFSET 0
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#define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
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#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
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#define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
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#define INT_INTERFACE_ID_LENGTH 4
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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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guint16 number_of_ids, id_number;
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gint offset;
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number_of_ids= (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) / INT_INTERFACE_ID_LENGTH;
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offset = PARAMETER_VALUE_OFFSET;
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proto_item_append_text(parameter_item, " (");
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for (id_number = 0; id_number < number_of_ids; id_number++) {
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proto_tree_add_item(parameter_tree, hf_int_interface_id, parameter_tvb, offset, INT_INTERFACE_ID_LENGTH, ENC_BIG_ENDIAN);
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proto_item_append_text(parameter_item, (id_number > 0) ? ", %d" : "%d", tvb_get_ntohl(parameter_tvb, offset));
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offset += INT_INTERFACE_ID_LENGTH;
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}
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proto_item_append_text(parameter_item, ")");
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}
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#define TEXT_INTERFACE_ID_OFFSET PARAMETER_VALUE_OFFSET
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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 interface_id_length;
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interface_id_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
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proto_tree_add_item(parameter_tree, hf_text_interface_id, parameter_tvb, TEXT_INTERFACE_ID_OFFSET, interface_id_length, ENC_ASCII|ENC_NA);
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proto_item_append_text(parameter_item, " (%.*s)", interface_id_length,
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tvb_format_text(parameter_tvb, TEXT_INTERFACE_ID_OFFSET, interface_id_length));
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}
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#define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
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static void
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dissect_info_string_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
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{
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guint16 info_string_length;
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info_string_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
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proto_tree_add_item(parameter_tree, hf_info_string, parameter_tvb, INFO_STRING_OFFSET, info_string_length, ENC_ASCII|ENC_NA);
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proto_item_append_text(parameter_item, " (%.*s)", info_string_length,
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tvb_format_text(parameter_tvb, INFO_STRING_OFFSET, info_string_length));
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}
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#define DLCI_SAPI_LENGTH 1
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#define DLCI_TEI_LENGTH 1
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#define DLCI_SPARE_LENGTH 2
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#define DLCI_SAPI_OFFSET PARAMETER_VALUE_OFFSET
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#define DLCI_TEI_OFFSET (DLCI_SAPI_OFFSET + DLCI_SAPI_LENGTH)
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#define DLCI_SPARE_OFFSET (DLCI_TEI_OFFSET + DLCI_TEI_LENGTH)
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#define ZERO_BIT_MASK 0x01
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#define SPARE_BIT_MASK 0x02
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#define SAPI_MASK 0xfc
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#define SAPI_SHIFT 2
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#define ONE_BIT_MASK 0x01
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#define TEI_MASK 0xfe
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/* SAPI values taken from Q.921 */
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#define SAPI_VAL_CALL_CONTROL 0
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#define SAPI_VAL_Q931_PACKET 1
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#define SAPI_VAL_TELACTION 12
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#define SAPI_VAL_X25 16
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#define SAPI_VAL_LAYER_2 63
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static const value_string sapi_values[] = {
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{ SAPI_VAL_CALL_CONTROL, "Call control procedures" },
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{ SAPI_VAL_Q931_PACKET, "Q.931 packet mode communication" },
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{ SAPI_VAL_TELACTION, "Teleaction communication" },
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{ SAPI_VAL_X25, "X.25 packet communication" },
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{ SAPI_VAL_LAYER_2, "Layer 2 management procedures" },
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{ 0, NULL }
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};
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static const value_string gsm_sapi_vals[] = {
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{ LAPD_GSM_SAPI_RA_SIG_PROC, "Radio signalling procedures" },
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{ LAPD_GSM_SAPI_NOT_USED_1, "(Not used in GSM PLMN)" },
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{ LAPD_GSM_SAPI_NOT_USED_16, "(Not used in GSM PLMN)" },
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{ LAPD_GSM_SAPI_OM_PROC, "Operation and maintenance procedure" },
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{ LAPD_SAPI_L2, "Layer 2 management procedures" },
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{ 0, NULL }
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};
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static void
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dissect_dlci_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
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{
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proto_tree_add_item(parameter_tree, hf_dlci_zero_bit, parameter_tvb, DLCI_SAPI_OFFSET, DLCI_SAPI_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(parameter_tree, hf_dlci_spare_bit, parameter_tvb, DLCI_SAPI_OFFSET, DLCI_SAPI_LENGTH, ENC_BIG_ENDIAN);
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/* Add the SAPI + some explanatory text, store the SAPI value so that we can later how to
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* dissect the protocol data */
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if(global_iua_gsm_sapis) {
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proto_tree_add_item(parameter_tree, hf_dlci_gsm_sapi, parameter_tvb, DLCI_SAPI_OFFSET, DLCI_SAPI_LENGTH, ENC_BIG_ENDIAN);
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} else {
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proto_tree_add_item(parameter_tree, hf_dlci_sapi, parameter_tvb, DLCI_SAPI_OFFSET, DLCI_SAPI_LENGTH, ENC_BIG_ENDIAN);
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}
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sapi_val = (tvb_get_guint8(parameter_tvb, DLCI_SAPI_OFFSET) & SAPI_MASK) >> SAPI_SHIFT;
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sapi_val_assigned = TRUE;
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proto_tree_add_item(parameter_tree, hf_dlci_one_bit, parameter_tvb, DLCI_TEI_OFFSET, DLCI_TEI_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(parameter_tree, hf_dlci_tei, parameter_tvb, DLCI_TEI_OFFSET, DLCI_TEI_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(parameter_tree, hf_dlci_spare, parameter_tvb, DLCI_SPARE_OFFSET, DLCI_SPARE_LENGTH, ENC_BIG_ENDIAN);
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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, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
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proto_tree_add_item(parameter_tree, hf_diag_info, parameter_tvb, PARAMETER_VALUE_OFFSET, diag_info_length, ENC_NA);
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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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#define START_LENGTH 4
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#define END_LENGTH 4
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#define INTERVAL_LENGTH (START_LENGTH + END_LENGTH)
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#define START_OFFSET 0
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#define END_OFFSET (START_OFFSET + START_LENGTH)
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static void
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dissect_integer_range_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
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{
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guint16 number_of_ranges, range_number;
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gint offset;
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number_of_ranges = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) / INTERVAL_LENGTH;
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offset = PARAMETER_VALUE_OFFSET;
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proto_item_append_text(parameter_item, " (");
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for (range_number = 0; range_number < number_of_ranges; range_number++) {
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proto_tree_add_item(parameter_tree, hf_interface_range_start, parameter_tvb, offset + START_OFFSET, START_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(parameter_tree, hf_interface_range_end, parameter_tvb, offset + END_OFFSET, END_LENGTH, ENC_BIG_ENDIAN);
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proto_item_append_text(parameter_item, (range_number > 0) ? ", %d-%d" : "%d-%d",
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tvb_get_ntohl(parameter_tvb, offset + START_OFFSET), tvb_get_ntohl(parameter_tvb, offset + END_OFFSET));
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offset += INTERVAL_LENGTH;
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}
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proto_item_append_text(parameter_item, ")");
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}
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#define HEARTBEAT_DATA_OFFSET PARAMETER_VALUE_OFFSET
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static void
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dissect_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
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{
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guint16 heartbeat_data_length;
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heartbeat_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
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proto_tree_add_item(parameter_tree, hf_heartbeat_data, parameter_tvb, HEARTBEAT_DATA_OFFSET, heartbeat_data_length, ENC_NA);
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proto_item_append_text(parameter_item, " (%u byte%s)", heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
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}
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#define ASP_MGMT_REASON 1
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static const value_string asp_reason_values[] = {
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{ ASP_MGMT_REASON, "Management inhibit" },
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{ 0, NULL } };
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#define ASP_REASON_LENGTH 4
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#define ASP_REASON_OFFSET PARAMETER_VALUE_OFFSET
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static void
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dissect_asp_reason_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_asp_reason, parameter_tvb, ASP_REASON_OFFSET, ASP_REASON_LENGTH, ENC_BIG_ENDIAN);
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proto_item_append_text(parameter_item, " (%s)", val_to_str_const(tvb_get_ntohl(parameter_tvb, ASP_REASON_OFFSET), asp_reason_values, "unknown"));
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}
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#define OVER_RIDE_TRAFFIC_MODE_TYPE 1
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#define LOAD_SHARE_TRAFFIC_MODE_TYPE 2
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static const value_string traffic_mode_type_values[] = {
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{ OVER_RIDE_TRAFFIC_MODE_TYPE, "Over-ride" },
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{ LOAD_SHARE_TRAFFIC_MODE_TYPE, "Load-share" },
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{ 0, NULL } };
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#define TRAFFIC_MODE_TYPE_LENGTH 4
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#define TRAFFIC_MODE_TYPE_OFFSET PARAMETER_VALUE_OFFSET
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static void
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dissect_traffic_mode_type_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_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, ENC_BIG_ENDIAN);
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proto_item_append_text(parameter_item, " (%s)",
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val_to_str_const(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), traffic_mode_type_values, "unknown"));
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}
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#define INVALID_VERSION_ERROR 0x01
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#define INVALID_INTERFACE_IDENTIFIER_ERROR 0x02
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#define UNSUPPORTED_MESSAGE_CLASS_ERROR 0x03
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#define UNSUPPORTED_MESSAGE_TYPE_ERROR 0x04
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#define UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR 0x05
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#define UNEXPECTED_MESSAGE_ERROR 0x06
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#define PROTOCOL_ERROR 0x07
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#define UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR 0x08
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#define INVALID_STREAM_IDENTIFIER_ERROR 0x09
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#define UNASSIGNED_TEI_ERROR 0x0a
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#define UNRECOGNIZED_SAPI_ERROR 0x0b
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#define INVALID_TEI_SAPI_COMBINATION_ERROR 0x0c
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#define REFUSED_MANAGEMENT_BLOCKING_ERROR 0x0d
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#define ASP_IDENTIFIER_REQUIRED_ERROR 0x0e
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#define INVALID_ASP_IDENTIFIER_ERROR 0x0f
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static const value_string error_code_values[] = {
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{ INVALID_VERSION_ERROR, "Invalid version" },
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{ INVALID_INTERFACE_IDENTIFIER_ERROR, "Invalid interface identifier" },
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{ UNSUPPORTED_MESSAGE_CLASS_ERROR, "Unsupported message class" },
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{ UNSUPPORTED_MESSAGE_TYPE_ERROR, "Unsupported message type" },
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{ UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR, "Unsupported traffic handling mode" },
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{ UNEXPECTED_MESSAGE_ERROR, "Unexpected message" },
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{ PROTOCOL_ERROR, "Protocol error" },
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{ UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR, "Unsupported interface identifier type" },
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{ INVALID_STREAM_IDENTIFIER_ERROR, "Invalid stream identifier" },
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{ UNASSIGNED_TEI_ERROR, "Unassigned TEI" },
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{ UNRECOGNIZED_SAPI_ERROR, "Unrecognized SAPI" },
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{ INVALID_TEI_SAPI_COMBINATION_ERROR, "Invalid TEI/SAPI combination" },
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{ 0, NULL } };
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static const value_string error_code_ig_values[] = {
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{ INVALID_VERSION_ERROR, "Invalid version" },
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{ INVALID_INTERFACE_IDENTIFIER_ERROR, "Invalid interface identifier" },
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{ UNSUPPORTED_MESSAGE_CLASS_ERROR, "Unsupported message class" },
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{ UNSUPPORTED_MESSAGE_TYPE_ERROR, "Unsupported message type" },
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{ UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR, "Unsupported traffic handling mode" },
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{ UNEXPECTED_MESSAGE_ERROR, "Unexpected message" },
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{ PROTOCOL_ERROR, "Protocol error" },
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{ UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR, "Unsupported interface identifier type" },
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{ INVALID_STREAM_IDENTIFIER_ERROR, "Invalid stream identifier" },
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{ UNASSIGNED_TEI_ERROR, "Unassigned TEI" },
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{ UNRECOGNIZED_SAPI_ERROR, "Unrecognized SAPI" },
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{ INVALID_TEI_SAPI_COMBINATION_ERROR, "Invalid TEI/SAPI combination" },
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{ REFUSED_MANAGEMENT_BLOCKING_ERROR, "Refused - Management blocking" },
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{ ASP_IDENTIFIER_REQUIRED_ERROR, "ASP identifier required" },
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{ INVALID_ASP_IDENTIFIER_ERROR, "Invalid ASP identifier" },
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{ 0, NULL } };
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#define ERROR_CODE_LENGTH 4
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#define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
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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, support_IG?hf_error_code_ig:hf_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, ENC_BIG_ENDIAN);
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proto_item_append_text(parameter_item, " (%s)",
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val_to_str_const(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), support_IG?error_code_ig_values:error_code_values, "unknown"));
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}
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#define ASP_STATE_CHANGE_STATUS_TYPE 0x01
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#define OTHER_STATUS_TYPE 0x02
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static const value_string status_type_values[] = {
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{ ASP_STATE_CHANGE_STATUS_TYPE, "Application server state change" },
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{ OTHER_STATUS_TYPE, "Other" },
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{ 0, NULL } };
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#define AS_DOWN_STATUS_IDENT 0x01
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|
#define AS_INACTIVE_STATUS_IDENT 0x02
|
|
#define AS_ACTIVE_STATUS_IDENT 0x03
|
|
#define AS_PENDING_STATUS_IDENT 0x04
|
|
|
|
#define INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT 0x01
|
|
#define ALTERNATE_ASP_ACTIVE_STATUS_IDENT 0x02
|
|
|
|
static const value_string status_type_id_values[] = {
|
|
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_DOWN_STATUS_IDENT, "Application server down" },
|
|
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_INACTIVE_STATUS_IDENT, "Application server inactive" },
|
|
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_ACTIVE_STATUS_IDENT, "Application server active" },
|
|
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_PENDING_STATUS_IDENT, "Application server pending" },
|
|
{ OTHER_STATUS_TYPE * 256 * 256 + INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT, "Insufficient ASP resources active in AS" },
|
|
{ OTHER_STATUS_TYPE * 256 * 256 + ALTERNATE_ASP_ACTIVE_STATUS_IDENT, "Alternate ASP active" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string status_type_id_ig_values[] = {
|
|
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_INACTIVE_STATUS_IDENT, "Application server inactive" },
|
|
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_ACTIVE_STATUS_IDENT, "Application server active" },
|
|
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_PENDING_STATUS_IDENT, "Application server pending" },
|
|
{ OTHER_STATUS_TYPE * 256 * 256 + INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT, "Insufficient ASP resources active in AS" },
|
|
{ OTHER_STATUS_TYPE * 256 * 256 + ALTERNATE_ASP_ACTIVE_STATUS_IDENT, "Alternate ASP active" },
|
|
{ 0, NULL } };
|
|
|
|
#define STATUS_TYPE_LENGTH 2
|
|
#define STATUS_IDENT_LENGTH 2
|
|
#define STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET
|
|
#define STATUS_IDENT_OFFSET (STATUS_TYPE_OFFSET + STATUS_TYPE_LENGTH)
|
|
|
|
static void
|
|
dissect_status_type_identification_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 status_type, status_id;
|
|
|
|
status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
|
|
status_id = tvb_get_ntohs(parameter_tvb, STATUS_IDENT_OFFSET);
|
|
|
|
proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH, ENC_BIG_ENDIAN);
|
|
proto_tree_add_uint_format_value(parameter_tree, hf_status_id, parameter_tvb, STATUS_IDENT_OFFSET, STATUS_IDENT_LENGTH,
|
|
status_id, "%u (%s)", status_id,
|
|
val_to_str_const(status_type * 256 * 256 + status_id, support_IG?status_type_id_ig_values:status_type_id_values, "unknown"));
|
|
|
|
proto_item_append_text(parameter_item, " (%s)",
|
|
val_to_str_const(status_type * 256 * 256 + status_id, support_IG?status_type_id_ig_values:status_type_id_values, "unknown status information"));
|
|
}
|
|
|
|
#define PROTOCOL_DATA_OFFSET PARAMETER_VALUE_OFFSET
|
|
|
|
static void
|
|
dissect_protocol_data_parameter(tvbuff_t *parameter_tvb, proto_item *parameter_item, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
guint16 protocol_data_length;
|
|
tvbuff_t *protocol_data_tvb;
|
|
|
|
protocol_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
|
|
protocol_data_tvb = tvb_new_subset_length(parameter_tvb, PROTOCOL_DATA_OFFSET, protocol_data_length);
|
|
proto_item_append_text(parameter_item, " (%u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
|
|
|
|
if(sapi_val_assigned == FALSE)
|
|
{
|
|
return;
|
|
}
|
|
if(global_iua_gsm_sapis) {
|
|
if (!dissector_try_uint(lapd_gsm_sapi_dissector_table, sapi_val, protocol_data_tvb, pinfo, tree))
|
|
call_data_dissector(protocol_data_tvb, pinfo, tree);
|
|
return;
|
|
}
|
|
|
|
switch(sapi_val)
|
|
{
|
|
case SAPI_VAL_CALL_CONTROL:
|
|
case SAPI_VAL_Q931_PACKET:
|
|
call_dissector(q931_handle, protocol_data_tvb, pinfo, tree);
|
|
break;
|
|
|
|
case SAPI_VAL_X25:
|
|
call_dissector(x25_handle, protocol_data_tvb, pinfo, tree);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
#define RELEASE_MGMT_REASON 0
|
|
#define RELEASE_PHYS_REASON 1
|
|
#define RELEASE_DM_REASON 2
|
|
#define RELEASE_OTHER_REASON 3
|
|
|
|
static const value_string release_reason_values[] = {
|
|
{ RELEASE_MGMT_REASON, "Management layer generated release" },
|
|
{ RELEASE_PHYS_REASON, "Physical layer alarm generated release" },
|
|
{ RELEASE_DM_REASON, "Layer 2 should release" },
|
|
{ RELEASE_OTHER_REASON, "Other reason" },
|
|
{ 0, NULL } };
|
|
|
|
#define RELEASE_REASON_OFFSET PARAMETER_VALUE_OFFSET
|
|
#define RELEASE_REASON_LENGTH 4
|
|
|
|
static void
|
|
dissect_release_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
proto_tree_add_item(parameter_tree, hf_release_reason, parameter_tvb, RELEASE_REASON_OFFSET, RELEASE_REASON_LENGTH, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(parameter_item, " (%s)",
|
|
val_to_str_const(tvb_get_ntohl(parameter_tvb, RELEASE_REASON_OFFSET), release_reason_values, "unknown"));
|
|
}
|
|
|
|
#define TEI_STATUS_ASSIGNED 0
|
|
#define TEI_STATUS_UNASSIGNED 1
|
|
|
|
static const value_string tei_status_values[] = {
|
|
{ TEI_STATUS_ASSIGNED, "TEI is considered assigned by Q.921" },
|
|
{ TEI_STATUS_UNASSIGNED, "TEI is considered unassigned by Q.921" },
|
|
{ 0, NULL } };
|
|
|
|
#define TEI_STATUS_LENGTH 4
|
|
#define TEI_STATUS_OFFSET PARAMETER_VALUE_OFFSET
|
|
|
|
static void
|
|
dissect_tei_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
proto_tree_add_item(parameter_tree, hf_tei_status, parameter_tvb, TEI_STATUS_OFFSET, TEI_STATUS_LENGTH, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(parameter_item, " (%s)",
|
|
val_to_str_const(tvb_get_ntohl(parameter_tvb, TEI_STATUS_OFFSET), tei_status_values, "unknown"));
|
|
}
|
|
|
|
#define ASP_ID_LENGTH 4
|
|
#define ASP_ID_OFFSET PARAMETER_VALUE_OFFSET
|
|
|
|
static void
|
|
dissect_asp_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
proto_tree_add_item(parameter_tree, hf_asp_id, parameter_tvb, ASP_ID_OFFSET, ASP_ID_LENGTH, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, ASP_ID_OFFSET));
|
|
}
|
|
|
|
static void
|
|
dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
{
|
|
guint16 parameter_value_length;
|
|
|
|
parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
|
|
if (parameter_value_length > 0)
|
|
proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, ENC_NA);
|
|
proto_item_append_text(parameter_item, " with tag %u and %u byte%s value",
|
|
tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET), parameter_value_length, plurality(parameter_value_length, "", "s"));
|
|
}
|
|
|
|
#define INT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x01
|
|
#define TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x03
|
|
#define INFO_PARAMETER_TAG 0x04
|
|
#define DLCI_PARAMETER_TAG 0x05
|
|
#define DIAGNOSTIC_INFORMATION_PARAMETER_TAG 0x07
|
|
#define INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x08
|
|
#define HEARTBEAT_DATA_PARAMETER_TAG 0x09
|
|
#define ASP_REASON_PARAMETER_TAG 0x0a
|
|
#define TRAFFIC_MODE_TYPE_PARAMETER_TAG 0x0b
|
|
#define ERROR_CODE_PARAMETER_TAG 0x0c
|
|
#define STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG 0x0d
|
|
#define PROTOCOL_DATA_PARAMETER_TAG 0x0e
|
|
#define RELEASE_REASON_PARAMETER_TAG 0x0f
|
|
#define TEI_STATUS_PARAMETER_TAG 0x10
|
|
#define ASP_IDENTIFIER_PARAMETER_TAG 0x11
|
|
|
|
static const value_string parameter_tag_values[] = {
|
|
{ INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer interface identifier" },
|
|
{ TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Text interface identifier" },
|
|
{ INFO_PARAMETER_TAG, "Info" },
|
|
{ DLCI_PARAMETER_TAG, "DLCI" },
|
|
{ DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" },
|
|
{ INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer range interface identifier" },
|
|
{ HEARTBEAT_DATA_PARAMETER_TAG, "Heartbeat data" },
|
|
{ ASP_REASON_PARAMETER_TAG, "Reason" },
|
|
{ TRAFFIC_MODE_TYPE_PARAMETER_TAG, "Traffic mode type" },
|
|
{ ERROR_CODE_PARAMETER_TAG, "Error code" },
|
|
{ STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG, "Status type/identification" },
|
|
{ PROTOCOL_DATA_PARAMETER_TAG, "Protocol data" },
|
|
{ RELEASE_REASON_PARAMETER_TAG, "Reason" },
|
|
{ TEI_STATUS_PARAMETER_TAG, "TEI status" },
|
|
{ 0, NULL } };
|
|
|
|
static const value_string parameter_tag_ig_values[] = {
|
|
{ INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer interface identifier" },
|
|
{ TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Text interface identifier" },
|
|
{ INFO_PARAMETER_TAG, "Info" },
|
|
{ DLCI_PARAMETER_TAG, "DLCI" },
|
|
{ DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" },
|
|
{ INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer range interface identifier" },
|
|
{ HEARTBEAT_DATA_PARAMETER_TAG, "Heartbeat data" },
|
|
{ TRAFFIC_MODE_TYPE_PARAMETER_TAG, "Traffic mode type" },
|
|
{ ERROR_CODE_PARAMETER_TAG, "Error code" },
|
|
{ STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG, "Status type/identification" },
|
|
{ PROTOCOL_DATA_PARAMETER_TAG, "Protocol data" },
|
|
{ RELEASE_REASON_PARAMETER_TAG, "Reason" },
|
|
{ TEI_STATUS_PARAMETER_TAG, "TEI status" },
|
|
{ ASP_IDENTIFIER_PARAMETER_TAG, "ASP identifier"},
|
|
{ 0, NULL } };
|
|
|
|
static void
|
|
dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *iua_tree)
|
|
{
|
|
guint16 tag, length, padding_length;
|
|
proto_item *parameter_item;
|
|
proto_tree *parameter_tree;
|
|
|
|
/* extract tag and length from the parameter */
|
|
tag = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
padding_length = tvb_reported_length(parameter_tvb) - length;
|
|
|
|
/* create proto_tree stuff */
|
|
parameter_tree = proto_tree_add_subtree_format(iua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, -1, ett_iua_parameter, ¶meter_item,
|
|
"%s parameter", val_to_str_const(tag, support_IG?parameter_tag_ig_values:parameter_tag_values, "Unknown"));
|
|
|
|
/* add tag and length to the iua tree */
|
|
proto_tree_add_item(parameter_tree, support_IG?hf_parameter_tag_ig:hf_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, ENC_BIG_ENDIAN);
|
|
|
|
switch(tag) {
|
|
case INT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
|
|
dissect_int_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
|
|
dissect_text_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case INFO_PARAMETER_TAG:
|
|
dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case DLCI_PARAMETER_TAG:
|
|
dissect_dlci_parameter(parameter_tvb, parameter_tree);
|
|
break;
|
|
case DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
|
|
dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG:
|
|
dissect_integer_range_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case HEARTBEAT_DATA_PARAMETER_TAG:
|
|
dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case ASP_REASON_PARAMETER_TAG:
|
|
if (support_IG)
|
|
dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
else
|
|
dissect_asp_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case TRAFFIC_MODE_TYPE_PARAMETER_TAG:
|
|
dissect_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case ERROR_CODE_PARAMETER_TAG:
|
|
dissect_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG:
|
|
dissect_status_type_identification_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case PROTOCOL_DATA_PARAMETER_TAG:
|
|
dissect_protocol_data_parameter(parameter_tvb, parameter_item, pinfo, tree);
|
|
break;
|
|
case RELEASE_REASON_PARAMETER_TAG:
|
|
dissect_release_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case TEI_STATUS_PARAMETER_TAG:
|
|
dissect_tei_status_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
case ASP_IDENTIFIER_PARAMETER_TAG:
|
|
if (support_IG)
|
|
dissect_asp_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
else
|
|
dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
default:
|
|
dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
break;
|
|
};
|
|
|
|
if (padding_length > 0)
|
|
proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, ENC_NA);
|
|
}
|
|
|
|
static void
|
|
dissect_parameters(tvbuff_t *parameters_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *iua_tree)
|
|
{
|
|
gint offset, length, total_length, remaining_length;
|
|
tvbuff_t *parameter_tvb;
|
|
|
|
offset = 0;
|
|
while((remaining_length = tvb_reported_length_remaining(parameters_tvb, offset))) {
|
|
length = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET);
|
|
total_length = ADD_PADDING(length);
|
|
if (remaining_length >= length)
|
|
total_length = MIN(total_length, remaining_length);
|
|
/* create a tvb for the parameter including the padding bytes */
|
|
parameter_tvb = tvb_new_subset_length(parameters_tvb, offset, total_length);
|
|
dissect_parameter(parameter_tvb, pinfo, tree, iua_tree);
|
|
/* get rid of the handled parameter */
|
|
offset += total_length;
|
|
}
|
|
}
|
|
|
|
#define VERSION_LENGTH 1
|
|
#define RESERVED_LENGTH 1
|
|
#define MESSAGE_CLASS_LENGTH 1
|
|
#define MESSAGE_TYPE_LENGTH 1
|
|
#define MESSAGE_LENGTH_LENGTH 4
|
|
#define COMMON_HEADER_LENGTH (VERSION_LENGTH + RESERVED_LENGTH + MESSAGE_CLASS_LENGTH + \
|
|
MESSAGE_TYPE_LENGTH + MESSAGE_LENGTH_LENGTH)
|
|
|
|
#define COMMON_HEADER_OFFSET 0
|
|
#define VERSION_OFFSET COMMON_HEADER_OFFSET
|
|
#define RESERVED_OFFSET (VERSION_OFFSET + VERSION_LENGTH)
|
|
#define MESSAGE_CLASS_OFFSET (RESERVED_OFFSET + RESERVED_LENGTH)
|
|
#define MESSAGE_TYPE_OFFSET (MESSAGE_CLASS_OFFSET + MESSAGE_CLASS_LENGTH)
|
|
#define MESSAGE_LENGTH_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
|
|
#define PARAMETERS_OFFSET (COMMON_HEADER_OFFSET + COMMON_HEADER_LENGTH)
|
|
|
|
#define PROTOCOL_VERSION_RELEASE_1 1
|
|
|
|
static const value_string protocol_version_values[] = {
|
|
{ PROTOCOL_VERSION_RELEASE_1, "Release 1" },
|
|
{ 0, NULL } };
|
|
|
|
#define MESSAGE_CLASS_MGMT_MESSAGE 0
|
|
#define MESSAGE_CLASS_TFER_MESSAGE 1
|
|
#define MESSAGE_CLASS_SSNM_MESSAGE 2
|
|
#define MESSAGE_CLASS_ASPSM_MESSAGE 3
|
|
#define MESSAGE_CLASS_ASPTM_MESSAGE 4
|
|
#define MESSAGE_CLASS_QPTM_MESSAGE 5
|
|
#define MESSAGE_CLASS_MAUP_MESSAGE 6
|
|
#define MESSAGE_CLASS_CL_SUA_MESSAGE 7
|
|
#define MESSAGE_CLASS_CO_SUA_MESSAGE 8
|
|
|
|
static const value_string message_class_values[] = {
|
|
{ MESSAGE_CLASS_MGMT_MESSAGE, "Management messages" },
|
|
{ MESSAGE_CLASS_TFER_MESSAGE, "Transfer messages" },
|
|
{ MESSAGE_CLASS_SSNM_MESSAGE, "SS7 signalling network management messages" },
|
|
{ MESSAGE_CLASS_ASPSM_MESSAGE, "ASP state maintenance messages" },
|
|
{ MESSAGE_CLASS_ASPTM_MESSAGE, "ASP traffic maintenance messages" },
|
|
{ MESSAGE_CLASS_QPTM_MESSAGE, "Q.921/Q.931 boundary primitive transport messages" },
|
|
{ MESSAGE_CLASS_MAUP_MESSAGE, "MTP2 user adaptation messages" },
|
|
{ MESSAGE_CLASS_CL_SUA_MESSAGE, "Connectionless messages (SUA)" },
|
|
{ MESSAGE_CLASS_CO_SUA_MESSAGE, "Connection-oriented messages (SUA)" },
|
|
{ 0, NULL } };
|
|
|
|
/* message types for MGMT messages */
|
|
#define MESSAGE_TYPE_ERR 0
|
|
#define MESSAGE_TYPE_NTFY 1
|
|
#define MESSAGE_TYPE_TEI_STATUS_REQ 2
|
|
#define MESSAGE_TYPE_TEI_STATUS_CON 3
|
|
#define MESSAGE_TYPE_TEI_STATUS_IND 4
|
|
#define MESSAGE_TYPE_TEI_QUERY_REQ 5
|
|
|
|
/* message types for ASPSM messages */
|
|
#define MESSAGE_TYPE_UP 1
|
|
#define MESSAGE_TYPE_DOWN 2
|
|
#define MESSAGE_TYPE_BEAT 3
|
|
#define MESSAGE_TYPE_UP_ACK 4
|
|
#define MESSAGE_TYPE_DOWN_ACK 5
|
|
#define MESSAGE_TYPE_BEAT_ACK 6
|
|
|
|
/* message types for ASPTM messages */
|
|
#define MESSAGE_TYPE_ACTIVE 1
|
|
#define MESSAGE_TYPE_INACTIVE 2
|
|
#define MESSAGE_TYPE_ACTIVE_ACK 3
|
|
#define MESSAGE_TYPE_INACTIVE_ACK 4
|
|
|
|
/* message types for QPTM messages */
|
|
#define MESSAGE_TYPE_DATA_REQUEST 1
|
|
#define MESSAGE_TYPE_DATA_INDICATION 2
|
|
#define MESSAGE_TYPE_UNIT_DATA_REQUEST 3
|
|
#define MESSAGE_TYPE_UNIT_DATA_INDICATION 4
|
|
#define MESSAGE_TYPE_ESTABLISH_REQUEST 5
|
|
#define MESSAGE_TYPE_ESTABLISH_CONFIRM 6
|
|
#define MESSAGE_TYPE_ESTABLISH_INDICATION 7
|
|
#define MESSAGE_TYPE_RELEASE_REQUEST 8
|
|
#define MESSAGE_TYPE_RELEASE_CONFIRM 9
|
|
#define MESSAGE_TYPE_RELEASE_INDICATION 10
|
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static const value_string message_class_type_values[] = {
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "Error" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "Notify" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_REQ, "TEI status request" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_CON, "TEI status confirmation" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_IND, "TEI status indication" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP up" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP down" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "Heartbeat" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP up ack" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP down ack" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "Heartbeat ack" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP active" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP inactive" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP active ack" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "Data request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "Data indication" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_REQUEST, "Unit data request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_INDICATION, "Unit data indication" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "Establish request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "Establish indication" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "Release request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "Release confirmation" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "Release indication" },
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{ 0, NULL } };
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static const value_string message_class_type_ig_values[] = {
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "Error" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "Notify" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_REQ, "TEI status request" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_CON, "TEI status confirmation" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_IND, "TEI status indication" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_QUERY_REQ, "TEI query request" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP up" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP down" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "Heartbeat" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP up ack" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP down ack" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "Heartbeat ack" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP active" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP inactive" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP active ack" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "Data request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "Data indication" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_REQUEST, "Unit data request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_INDICATION, "Unit data indication" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "Establish request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "Establish indication" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "Release request" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "Release confirmation" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "Release indication" },
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{ 0, NULL } };
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static const value_string message_class_type_acro_values[] = {
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "ERR" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "NTFY" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_REQ, "TEI_STAT_REQ" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_CON, "TEI_STAT_CON" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_IND, "TEI_STAT_IND" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP_UP" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP_DOWN" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "BEAT" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP_UP_ACK" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP_DOWN_ACK" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "BEAT_ACK" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP_ACTIVE" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP_INACTIVE" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP_ACTIVE_ACK" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP_INACTIVE_ACK" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "DATA_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "DATA_IND" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_REQUEST, "U_DATA_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_INDICATION, "U_DATA_IND" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "EST_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "EST_CON" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "EST_IND" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "REL_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "REL_CON" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "REL_IND" },
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{ 0, NULL } };
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static const value_string message_class_type_acro_ig_values[] = {
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "ERR" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "NTFY" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_REQ, "TEI_STAT_REQ" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_CON, "TEI_STAT_CON" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_IND, "TEI_STAT_IND" },
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_QUERY_REQ, "TEI_QUERY_REQ" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP_UP" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP_DOWN" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "BEAT" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP_UP_ACK" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP_DOWN_ACK" },
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{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "BEAT_ACK" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP_ACTIVE" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP_INACTIVE" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP_ACTIVE_ACK" },
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{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP_INACTIVE_ACK" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "DATA_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "DATA_IND" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_REQUEST, "U_DATA_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_INDICATION, "U_DATA_IND" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "EST_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "EST_CON" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "EST_IND" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "REL_REQ" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "REL_CON" },
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{ MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "REL_IND" },
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{ 0, NULL } };
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static void
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dissect_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *iua_tree)
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{
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guint8 message_class, message_type;
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message_class = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
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message_type = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
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col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str_const(message_class * 256 + message_type, support_IG?message_class_type_acro_ig_values:message_class_type_acro_values, "UNKNOWN"));
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if (iua_tree) {
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/* add the components of the common header to the protocol tree */
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proto_tree_add_item(iua_tree, hf_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(iua_tree, hf_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(iua_tree, hf_message_class, common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_uint_format_value(iua_tree, hf_message_type,
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common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH,
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message_type, "%u (%s)",
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message_type, val_to_str_const(message_class * 256 + message_type, support_IG?message_class_type_ig_values:message_class_type_values, "reserved"));
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proto_tree_add_item(iua_tree, hf_message_length, common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, ENC_BIG_ENDIAN);
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}
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}
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static void
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dissect_iua_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *iua_tree)
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{
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tvbuff_t *common_header_tvb, *parameters_tvb;
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sapi_val_assigned = FALSE;
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common_header_tvb = tvb_new_subset_length(message_tvb, COMMON_HEADER_OFFSET, COMMON_HEADER_LENGTH);
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parameters_tvb = tvb_new_subset_remaining(message_tvb, PARAMETERS_OFFSET);
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dissect_common_header(common_header_tvb, pinfo, iua_tree);
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dissect_parameters(parameters_tvb, pinfo, tree, iua_tree);
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}
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static int
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dissect_iua(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_item *iua_item;
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proto_tree *iua_tree;
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/* make entry in the Protocol column on summary display */
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col_set_str(pinfo->cinfo, COL_PROTOCOL, support_IG?"IUA (RFC 3057 + IG)":"IUA (RFC 3057)");
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/* create the m3ua protocol tree */
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iua_item = proto_tree_add_item(tree, proto_iua, message_tvb, 0, -1, ENC_NA);
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iua_tree = proto_item_add_subtree(iua_item, ett_iua);
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/* dissect the message */
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dissect_iua_message(message_tvb, pinfo, tree, iua_tree);
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return tvb_captured_length(message_tvb);
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}
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/* Register the protocol with Wireshark */
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void
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proto_register_iua(void)
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{
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/* Setup list of header fields */
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static hf_register_info hf[] = {
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{ &hf_int_interface_id, { "Integer interface identifier", "iua.int_interface_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
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{ &hf_text_interface_id, { "Text interface identifier", "iua.text_interface_identifier", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
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{ &hf_info_string, { "Info string", "iua.info_string", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
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{ &hf_dlci_zero_bit, { "Zero bit", "iua.dlci_zero_bit", FT_BOOLEAN, 8, NULL, ZERO_BIT_MASK, NULL, HFILL } },
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{ &hf_dlci_spare_bit, { "Spare bit", "iua.dlci_spare_bit", FT_BOOLEAN, 8, NULL, SPARE_BIT_MASK, NULL, HFILL } },
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{ &hf_dlci_sapi, { "SAPI", "iua.dlci_sapi", FT_UINT8, BASE_HEX, VALS(sapi_values), SAPI_MASK, NULL, HFILL } },
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{ &hf_dlci_gsm_sapi, { "SAPI", "iua.dlci_gsm_sapi", FT_UINT8, BASE_HEX, VALS(gsm_sapi_vals), SAPI_MASK, NULL, HFILL } },
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{ &hf_dlci_one_bit, { "One bit", "iua.dlci_one_bit", FT_BOOLEAN, 8, NULL, ONE_BIT_MASK, NULL, HFILL } },
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{ &hf_dlci_tei, { "TEI", "iua.dlci_tei", FT_UINT8, BASE_HEX, NULL, TEI_MASK, NULL, HFILL } },
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{ &hf_dlci_spare, { "Spare", "iua.dlci_spare", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
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{ &hf_diag_info, { "Diagnostic information", "iua.diagnostic_information", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
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{ &hf_interface_range_start, { "Start", "iua.interface_range_start", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
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{ &hf_interface_range_end, { "End", "iua.interface_range_end", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
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{ &hf_heartbeat_data, { "Heartbeat data", "iua.heartbeat_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
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{ &hf_asp_reason, { "Reason", "iua.asp_reason", FT_UINT32, BASE_HEX, VALS(asp_reason_values), 0x0, NULL, HFILL } },
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{ &hf_traffic_mode_type, { "Traffic mode type", "iua.traffic_mode_type", FT_UINT32, BASE_HEX, VALS(traffic_mode_type_values), 0x0, NULL, HFILL } },
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{ &hf_error_code, { "Error code", "iua.error_code", FT_UINT32, BASE_DEC, VALS(error_code_values), 0x0, NULL, HFILL } },
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{ &hf_error_code_ig, { "Error code", "iua.error_code", FT_UINT32, BASE_DEC, VALS(error_code_ig_values), 0x0, NULL, HFILL } },
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{ &hf_status_type, { "Status type", "iua.status_type", FT_UINT16, BASE_DEC, VALS(status_type_values), 0x0, NULL, HFILL } },
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{ &hf_status_id, { "Status identification", "iua.status_identification", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
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{ &hf_release_reason, { "Reason", "iua.release_reason", FT_UINT32, BASE_HEX, VALS(release_reason_values), 0x0, NULL, HFILL } },
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{ &hf_tei_status, { "TEI status", "iua.tei_status", FT_UINT32, BASE_HEX, VALS(tei_status_values), 0x0, NULL, HFILL } },
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{ &hf_asp_id, { "ASP identifier", "iua.asp_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
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{ &hf_parameter_tag, { "Parameter Tag", "iua.parameter_tag", FT_UINT16, BASE_DEC, VALS(parameter_tag_values), 0x0, NULL, HFILL } },
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{ &hf_parameter_tag_ig, { "Parameter Tag", "iua.parameter_tag", FT_UINT16, BASE_DEC, VALS(parameter_tag_ig_values), 0x0, NULL, HFILL } },
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{ &hf_parameter_length, { "Parameter length", "iua.parameter_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
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{ &hf_parameter_value, { "Parameter value", "iua.parameter_value", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
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{ &hf_parameter_padding, { "Parameter padding", "iua.parameter_padding", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
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{ &hf_version, { "Version", "iua.version", FT_UINT8, BASE_DEC, VALS(protocol_version_values), 0x0, NULL, HFILL } },
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{ &hf_reserved, { "Reserved", "iua.reserved", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL } },
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{ &hf_message_class, { "Message class", "iua.message_class", FT_UINT8, BASE_DEC, VALS(message_class_values), 0x0, NULL, HFILL } },
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{ &hf_message_type, { "Message Type", "iua.message_type", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
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{ &hf_message_length, { "Message length", "iua.message_length", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
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};
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/* Setup protocol subtree array */
|
|
static gint *ett[] = {
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&ett_iua,
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&ett_iua_parameter,
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};
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/* Register the protocol name and description */
|
|
proto_iua = proto_register_protocol("ISDN Q.921-User Adaptation Layer", "IUA", "iua");
|
|
iua_module = prefs_register_protocol(proto_iua, NULL);
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/* Required function calls to register the header fields and subtrees used */
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proto_register_field_array(proto_iua, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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prefs_register_bool_preference(iua_module, "support_ig", "Support Implementers Guide", "Support Implementers Guide (version 01)", &support_IG);
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prefs_register_bool_preference(iua_module, "use_gsm_sapi_values",
|
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"Use GSM SAPI values",
|
|
"Use SAPI values as specified in TS 48 056",
|
|
&global_iua_gsm_sapis);
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/* Allow other dissectors to find this one by name. */
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register_dissector("iua", dissect_iua, proto_iua);
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}
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#define SCTP_PORT_IUA 9900
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void
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proto_reg_handoff_iua(void)
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{
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dissector_handle_t iua_handle;
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|
|
iua_handle = find_dissector("iua");
|
|
q931_handle = find_dissector_add_dependency("q931", proto_iua);
|
|
x25_handle = find_dissector_add_dependency("x.25", proto_iua);
|
|
|
|
dissector_add_uint("sctp.port", SCTP_PORT_IUA, iua_handle);
|
|
dissector_add_uint("sctp.ppi", IUA_PAYLOAD_PROTOCOL_ID, iua_handle);
|
|
|
|
lapd_gsm_sapi_dissector_table = find_dissector_table("lapd.gsm.sapi");
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|