/* packet-v5ua.c * * Extension of all V5.2-User Adaptation Layer dissection elements * References: * RFC 3807 * RFC 4233 * RFC 5133 * * Copyright 2009 * * ISKRATEL d.o.o. | 4S d.o.o. * http://www.iskratel.si/ | http://www.4es.si/ * | * Vladimir Smrekar * * Routines for V5.2-User Adaptation Layer dissection * * Extension of ISDN Q.921-User Adaptation Layer dissection * Copyright 2002, Michael Tuexen * * Christoph Neusch * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include #include /* include V5UA payload protocol ID */ #include void proto_register_v5ua(void); void proto_reg_handoff_v5ua(void); static int paddingl = 0; static int dlci_efa = -1; /* Initialize the protocol and registered fields */ static int proto_v5ua = -1; static dissector_handle_t q931_handle; static dissector_handle_t v52_handle; /* round up parameter length to multiple of four */ #define ADD_PADDING(x) ((((x) + 3) >> 2) << 2) /* common msg-header */ static int hf_version = -1; static int hf_reserved = -1; static int hf_msg_class = -1; static int hf_msg_type = -1; /* static int hf_msg_type_id = -1; */ static int hf_msg_length = -1; /* V5UA message header */ static int hf_link_id = -1; static int hf_chnl_id = -1; static int hf_adaptation_layer_id = -1; static int hf_text_if_id = -1; static int hf_scn_protocol_id = -1; static int hf_info_string = -1; static int hf_asp_identifier = -1; static int hf_dlci_zero_bit = -1; static int hf_dlci_spare_bit = -1; static int hf_dlci_sapi = -1; static int hf_dlci_one_bit = -1; static int hf_dlci_tei = -1; static int hf_efa = -1; /* static int hf_spare_efa = -1; */ /* variable length parameter (msg) */ static int hf_parameter_tag = -1; static int hf_parameter_tag_draft = -1; static int hf_parameter_length = -1; static int hf_parameter_value = -1; static int hf_parameter_padding = -1; /* parameter fields */ static int hf_link_status = -1; static int hf_sa_bit_id = -1; static int hf_sa_bit_value = -1; static int hf_diagnostic_info = -1; static int hf_if_range_start = -1; static int hf_if_range_end = -1; static int hf_heartbeat_data = -1; static int hf_traffic_mode_type = -1; static int hf_error_code = -1; static int hf_draft_error_code = -1; static int hf_status_type = -1; static int hf_status_id = -1; static int hf_error_reason = -1; static int hf_asp_reason = -1; static int hf_tei_status = -1; static int hf_tei_draft_status = -1; static int hf_release_reason = -1; /* Initialize the subtree pointers */ static gint ett_v5ua = -1; static gint ett_v5ua_common_header= -1; static gint ett_v5ua_parameter = -1; static gint ett_v5ua_layer3 = -1; #define RFC 0x1 #define DRAFT 0x2 /* Version of IUA */ static int iua_version = RFC; /* Variables necessary for dissection of draft messages */ static int msg_class = -1; static int msg_type = -1; static int msg_length = -1; static int messageclassCopy = -1; static int sa_bit_id = -1; static int link_status_operational = -1; /* Code to actually dissect the packets */ /* define the parameters for the Tags: Tag-Type,Tag-Length,Tag-Value (Payload) */ #define PARAMETER_TAG_OFFSET 0 #define PARAMETER_TAG_LENGTH 2 #define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH) #define PARAMETER_LENGTH_LENGTH 2 #define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH) #define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET #define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH) /*----------------------V5UA Interface Identifier (int) (Draft,RFC)------------*/ /* define parameter for the format of the integer formatted Interface Identifier */ #define INT_IF_ID_LINK_OFFSET PARAMETER_VALUE_OFFSET #define INT_IF_ID_LINK_LENGTH 4 #define INT_IF_ID_CHNL_OFFSET INT_IF_ID_LINK_OFFSET #define INT_IF_ID_CHNL_LENGTH 1 #define INT_INTERFACE_ID_LENGTH 4 static int linkIdentifier = -1; static void dissect_int_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) { guint32 identifier; guint16 number_of_ids, id_number; gint offset; number_of_ids= (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) / INT_INTERFACE_ID_LENGTH; offset = INT_IF_ID_LINK_OFFSET; proto_item_append_text(parameter_item, "("); for (id_number = 0; id_number < number_of_ids; id_number++) { proto_tree_add_item(parameter_tree, hf_link_id, parameter_tvb, offset, INT_IF_ID_LINK_LENGTH, ENC_BIG_ENDIAN); identifier = tvb_get_ntohl(parameter_tvb,offset)>>5; if (id_number < 1) { proto_item_append_text(parameter_item, "L:%d",identifier); } else { proto_item_append_text(parameter_item, " | L:%d",identifier); } linkIdentifier = identifier; proto_tree_add_item(parameter_tree, hf_chnl_id, parameter_tvb, offset+3, INT_IF_ID_CHNL_LENGTH, ENC_BIG_ENDIAN); identifier = tvb_get_guint8(parameter_tvb,offset+3)&0x1f; proto_item_append_text(parameter_item, " C:%d", identifier); offset += INT_INTERFACE_ID_LENGTH; } proto_item_append_text(parameter_item, ")"); } /*----------------------V5UA Interface Identifier (int) (Draft,RFC)------------*/ /*----------------------Text Interface Identifier (RFC)------------------------*/ #define TEXT_IF_ID_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET #define TEXT_IF_ID_VALUE_OFFSET PARAMETER_VALUE_OFFSET #define TEXT_IF_ID_HEADER_LENGTH PARAMETER_HEADER_LENGTH static void dissect_text_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) { guint16 if_id_length; const guint8* str; if_id_length = tvb_get_ntohs(parameter_tvb, TEXT_IF_ID_LENGTH_OFFSET) - TEXT_IF_ID_HEADER_LENGTH; proto_tree_add_item_ret_string(parameter_tree, hf_text_if_id, parameter_tvb, TEXT_IF_ID_VALUE_OFFSET, if_id_length, ENC_ASCII|ENC_NA, wmem_packet_scope(), &str); proto_item_append_text(parameter_item, " (0x%.*s)", if_id_length, str); } /*----------------------Text Interface Identifier (RFC)------------------------*/ /*----------------------DLCI & Envelope Function Address------------------------*/ /* interpretation of EFA-values */ static const value_string efa_values[] = { { 8175, "ISDN Protocol" }, { 8176, "PSTN Protocol" }, { 8177, "CONTROL Protocol" }, { 8178, "BCC Protocol" }, { 8179, "PROT Protocol" }, { 8180, "Link Control Protocol" }, { 8191, "VALUE RESERVED" }, { 0, NULL } }; #define DLCI_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET #define DLCI_SAPI_OFFSET PARAMETER_VALUE_OFFSET #define DLCI_HEADER_LENGTH PARAMETER_HEADER_LENGTH #define DLCI_SAPI_LENGTH 1 #define DLCI_TEI_LENGTH 1 #define EFA_LENGTH 2 static void dissect_dlci_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item, packet_info *pinfo) { guint16 efa = 0, offset = 0; guint8 sapi = -1; guint8 tei = -1; if (iua_version == RFC) offset = DLCI_SAPI_OFFSET; else if(iua_version == DRAFT) offset = DLCI_HEADER_LENGTH + tvb_get_ntohs(parameter_tvb, DLCI_LENGTH_OFFSET); proto_tree_add_item(parameter_tree, hf_dlci_zero_bit, parameter_tvb, offset, DLCI_SAPI_LENGTH, ENC_BIG_ENDIAN); proto_tree_add_item(parameter_tree, hf_dlci_spare_bit, parameter_tvb, offset, DLCI_SAPI_LENGTH, ENC_BIG_ENDIAN); proto_tree_add_item(parameter_tree, hf_dlci_sapi, parameter_tvb, offset, DLCI_SAPI_LENGTH, ENC_BIG_ENDIAN); offset += DLCI_SAPI_LENGTH; proto_tree_add_item(parameter_tree, hf_dlci_one_bit, parameter_tvb, offset, DLCI_TEI_LENGTH, ENC_BIG_ENDIAN); proto_tree_add_item(parameter_tree, hf_dlci_tei, parameter_tvb, offset, DLCI_TEI_LENGTH, ENC_BIG_ENDIAN); sapi = tvb_get_ntohs(parameter_tvb, offset-DLCI_TEI_LENGTH-DLCI_SAPI_LENGTH)>>2; tei = tvb_get_ntohs(parameter_tvb, offset-DLCI_TEI_LENGTH)>>1; offset += DLCI_TEI_LENGTH; efa = tvb_get_ntohs(parameter_tvb, offset); dlci_efa = tvb_get_ntohs(parameter_tvb, offset); if (dlci_efa >= 0 && dlci_efa <= 8175) { col_append_fstr(pinfo->cinfo, COL_INFO, " | ISDN: %u", dlci_efa); } else if (dlci_efa == 8176) { col_append_str(pinfo->cinfo, COL_INFO, " | PSTN"); } else if (dlci_efa == 8177) { col_append_str(pinfo->cinfo, COL_INFO, " | Ctrl"); } else if (dlci_efa == 8178) { col_append_str(pinfo->cinfo, COL_INFO, " | BCC"); } else if (dlci_efa == 8179) { col_append_str(pinfo->cinfo, COL_INFO, " | ProtProt"); } else if (dlci_efa == 8180) { col_append_str(pinfo->cinfo, COL_INFO, " | LinkCtrl"); } if(efa <= 8175) { proto_tree_add_uint_format_value(parameter_tree, hf_efa, parameter_tvb, offset, EFA_LENGTH, efa, "ISDN (%u)", efa); proto_item_append_text(parameter_item, " (SAPI:%u TEI:%u EFA:ISDN (%u))",sapi,tei,efa); } else if (efa > 8175 && efa <= 8180){ proto_tree_add_uint_format_value(parameter_tree, hf_efa, parameter_tvb, offset, EFA_LENGTH, efa, "%s (%u)", val_to_str_const(efa, efa_values, "unknown EFA"),tvb_get_ntohs(parameter_tvb, offset)); proto_item_append_text(parameter_item, " (SAPI:%u TEI:%u EFA:%s (%u))",sapi,tei,val_to_str_const(efa, efa_values, "unknown EFA-value"),efa); } else { proto_tree_add_uint_format_value(parameter_tree, hf_efa, parameter_tvb, offset, EFA_LENGTH, efa, "RESERVED (%u)", efa); proto_item_append_text(parameter_item, " (SAPI:%u TEI:%u EFA:RESERVED (%u))",sapi,tei,efa); } } /*----------------------DLCI & Envelope Function Address------------------------*/ /*----------------------Error Indication (Draft)-------------------------------*/ /* define Error Code Parameter for Layer Management (MGMT) Messages */ #define MGMT_ERROR_INVALID_TEI_DRAFT 0x00 #define MGMT_ERROR_INVALID_IFID_DRAFT 0x01 #define MGMT_ERROR_UNDEFINIED_MSG_DRAFT 0x02 #define MGMT_ERROR_VERSION_ERR_DRAFT 0x03 #define MGMT_ERROR_INVALID_STID_DRAFT 0x04 #define MGMT_ERROR_INVALID_SCNV_DRAFT 0x05 #define MGMT_ERROR_INVALID_ALI_DRAFT 0x06 static const value_string draft_error_code_values[] = { { MGMT_ERROR_INVALID_TEI_DRAFT, "Invalid TEI" }, { MGMT_ERROR_INVALID_IFID_DRAFT, "Invalid interface ID" }, { MGMT_ERROR_UNDEFINIED_MSG_DRAFT, "An unexpected message was received" }, { MGMT_ERROR_VERSION_ERR_DRAFT, "The IUA layers are of different version" }, { MGMT_ERROR_INVALID_STID_DRAFT, "Invalid SCTP stream identifier" }, { MGMT_ERROR_INVALID_SCNV_DRAFT, "Invalid SCN version" }, { MGMT_ERROR_INVALID_ALI_DRAFT, "Invalid Adaptation Layer Identifier" }, { 0, NULL } }; #define MGMT_ERROR_MSG_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET #define MGMT_ERROR_MSG_HEADER_LENGTH PARAMETER_HEADER_LENGTH #define MGMT_ERROR_CODE_LENGTH 4 static void dissect_draft_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) { guint16 offset = MGMT_ERROR_MSG_HEADER_LENGTH + tvb_get_ntohs(parameter_tvb, MGMT_ERROR_MSG_LENGTH_OFFSET) + 4; proto_tree_add_item(parameter_tree, hf_draft_error_code, parameter_tvb, offset, MGMT_ERROR_CODE_LENGTH, ENC_BIG_ENDIAN); offset += MGMT_ERROR_CODE_LENGTH ; if( tvb_reported_length_remaining(parameter_tvb,offset) > 0 ) proto_tree_add_item(parameter_tree, hf_info_string, parameter_tvb, offset, msg_length - offset,ENC_ASCII|ENC_NA); } /*----------------------Error Indication (Draft)-------------------------------*/ /*----------------------Error Indication (RFC)---------------------------------*/ /* define Error Code Parameter for Layer Management (MGMT) Messages */ #define MGMT_ERROR_INVALID_VERSION 0x01 #define MGMT_ERROR_INVALID_IF_ID 0x02 #define MGMT_ERROR_UNSUPPORTED_MSG_CLASS 0x03 #define MGMT_ERROR_UNSUPPORTED_MSG_TYPE 0x04 #define MGMT_ERROR_UNSUPPORTED_TRAFFIC_HANDLING_MODE 0x05 #define MGMT_ERROR_UNEXPECTED_MSG 0x06 #define MGMT_ERROR_PROTOCOL_ERROR 0x07 #define MGMT_ERROR_UNSUPPORTED_IF_ID_TYPE 0x08 #define MGMT_ERROR_INVALID_STREAM_ID 0x09 #define MGMT_ERROR_UNASSIGNED_TEI 0x0a #define MGMT_ERROR_UNRECOGNIZED_SAPI 0x0b #define MGMT_ERROR_INVALID_TEI_SAPI_COMBINATION 0x0c static const value_string error_code_values[] = { { MGMT_ERROR_INVALID_VERSION, "Invalid version" }, { MGMT_ERROR_INVALID_IF_ID, "Invalid interface identifier" }, { MGMT_ERROR_UNSUPPORTED_MSG_CLASS, "Unsupported message class" }, { MGMT_ERROR_UNSUPPORTED_MSG_TYPE, "Unsupported message type" }, { MGMT_ERROR_UNSUPPORTED_TRAFFIC_HANDLING_MODE, "Unsupported traffic handling mode" }, { MGMT_ERROR_UNEXPECTED_MSG, "Unexpected message" }, { MGMT_ERROR_PROTOCOL_ERROR, "Protocol error" }, { MGMT_ERROR_UNSUPPORTED_IF_ID_TYPE, "Unsupported interface identifier type" }, { MGMT_ERROR_INVALID_STREAM_ID, "Invalid stream identifier" }, { MGMT_ERROR_UNASSIGNED_TEI, "Unassigned TEI" }, { MGMT_ERROR_UNRECOGNIZED_SAPI, "Unrecognized SAPI" }, { MGMT_ERROR_INVALID_TEI_SAPI_COMBINATION, "Invalid TEI/SAPI combination" }, { 0, NULL } }; #define MGMT_ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET static void dissect_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) { proto_tree_add_item(parameter_tree, hf_error_code, parameter_tvb, MGMT_ERROR_CODE_OFFSET, MGMT_ERROR_CODE_LENGTH, ENC_BIG_ENDIAN); proto_item_append_text(parameter_item, " (%s)", val_to_str_const(tvb_get_ntohl(parameter_tvb, MGMT_ERROR_CODE_OFFSET), error_code_values, "Unknown error code")); } static void dissect_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) { guint16 diag_info_length; diag_info_length = tvb_get_ntohs(parameter_tvb, MGMT_ERROR_MSG_LENGTH_OFFSET) - MGMT_ERROR_MSG_HEADER_LENGTH; proto_tree_add_item(parameter_tree, hf_diagnostic_info, parameter_tvb, PARAMETER_VALUE_OFFSET, diag_info_length, ENC_NA); proto_item_append_text(parameter_item, " (%u byte%s)", diag_info_length, plurality(diag_info_length, "", "s")); } /*----------------------Error Indication (RFC)---------------------------------*/ /*----------------------Notify (RFC)-------------------------------------------*/ /* define Status Type parameters for Notify (NTFY) Messages */ #define NTFY_STATUS_TYPE_AS_STATE_CHANGE 0x01 #define NTFY_STATUS_TYPE_OTHER 0x02 static const value_string status_type_values[] = { { NTFY_STATUS_TYPE_AS_STATE_CHANGE, "Application server state change" }, { NTFY_STATUS_TYPE_OTHER, "Other" }, { 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, ENC_BIG_ENDIAN); proto_tree_add_uint_format_value(parameter_tree, hf_status_id, parameter_tvb, NTFY_STATUS_IDENT_OFFSET, NTFY_STATUS_IDENT_LENGTH, status_id, "%u (%s)", status_id, val_to_str_const(status_type * 256 * 256 + status_id, status_type_id_values, "unknown")); proto_item_append_text(parameter_item, " (%s)", val_to_str_const(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, 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 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 offset; offset = tvb_get_ntohs(parameter_tvb, TEI_STATUS_LENGTH_OFFSET) + 8; if(tvb_reported_length_remaining(parameter_tvb, offset) > 0 ){ proto_tree_add_item(parameter_tree, hf_tei_draft_status, parameter_tvb, offset, TEI_STATUS_LENGTH, ENC_BIG_ENDIAN); proto_item_append_text(parameter_item, " (%s)", val_to_str_const(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) { const guint8* str; guint16 adaptation_layer_id_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET); proto_tree_add_item_ret_string(parameter_tree, hf_adaptation_layer_id, parameter_tvb, PARAMETER_VALUE_OFFSET, adaptation_layer_id_length, ENC_ASCII|ENC_NA, wmem_packet_scope(), &str); proto_item_append_text(parameter_item, " (%.*s)", adaptation_layer_id_length, str); } static void dissect_scn_protocol_id_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) { const guint8* str; guint16 id_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET); proto_tree_add_item_ret_string(parameter_tree, hf_scn_protocol_id, parameter_tvb, PARAMETER_VALUE_OFFSET, id_length, ENC_ASCII|ENC_NA, wmem_packet_scope(), &str); proto_item_append_text(parameter_item, " (%.*s)", id_length, str); } /*----------------------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, ENC_BIG_ENDIAN); proto_item_append_text(parameter_item, " (%s)", val_to_str_const(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, ENC_NA); 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, ENC_BIG_ENDIAN); proto_item_append_text(parameter_item, " (%s)", val_to_str_const(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 = 0; 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, ENC_BIG_ENDIAN); proto_tree_add_item(parameter_tree, hf_if_range_end, parameter_tvb, offset + IF_ID_END_OFFSET, IF_ID_END_LENGTH, ENC_BIG_ENDIAN); 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)--------------------*/ #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 ALL_ADDRESS_OFFSET 1 #define ALL_ADDRESS_LENGTH 2 #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) { guint16 discriminator_offset; if(iua_version == DRAFT){ discriminator_offset = DISCRIMINATOR_OFFSET; } else{ discriminator_offset = DISCRIMINATOR_OFFSET + PARAMETER_HEADER_LENGTH; } if (tvb_get_guint8(layer3_data_tvb, discriminator_offset) == 0x48){ 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_length(layer3_data_tvb, PARAMETER_VALUE_OFFSET, protocol_data_length); call_dissector(v52_handle, protocol_data_tvb, pinfo, v5ua_tree); proto_item_append_text(parameter_item, " (%u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s")); } 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_length(layer3_data_tvb, PARAMETER_VALUE_OFFSET, 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, ENC_BIG_ENDIAN); if(iua_version != DRAFT) proto_item_append_text(parameter_item, " (%s)", val_to_str_const(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 operational" }, { LINK_STATUS_NON_OPERTIONAL, "Link not operational" }, { 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, ENC_BIG_ENDIAN); proto_item_append_text(parameter_item, " (%s)", val_to_str_const(tvb_get_ntohl(parameter_tvb, LINK_STATUS_OFFSET),link_status_values, "Unknown Link status")); link_status_operational = tvb_get_ntohl(parameter_tvb, LINK_STATUS_OFFSET); } /*----------------------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 value ZERO" }, { SA_BIT_ID_ONE, "set value ONE" }, { SA_BIT_VALUE_SA7, "Addresses the 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, ENC_BIG_ENDIAN); proto_tree_add_item(parameter_tree, hf_sa_bit_value, parameter_tvb, SA_BIT_VALUE_OFFSET, SA_BIT_VALUE_LENGTH, ENC_BIG_ENDIAN); proto_item_append_text(parameter_item, " (%s %s)", val_to_str_const(tvb_get_ntohs(parameter_tvb, SA_BIT_ID_OFFSET), sa_bit_values, "unknown"), val_to_str_const(tvb_get_ntohs(parameter_tvb, SA_BIT_VALUE_OFFSET), sa_bit_values, "unknown Bit")); sa_bit_id = tvb_get_ntohs(parameter_tvb, SA_BIT_VALUE_OFFSET); } /*----------------------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, ENC_BIG_ENDIAN); proto_item_append_text(parameter_item, " (%s)", val_to_str_const(tvb_get_ntohl(parameter_tvb, ERROR_REASON_OFFSET), error_reason_values, "unknown")); } /*----------------------Error Indication (RFC)---------------------------------*/ /*--------------------------ASP identifier-------------------------------------*/ #define ASP_IDENTIFIER_LENGTH 4 #define ASP_IDENTIFIER_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_identifier, parameter_tvb, ASP_IDENTIFIER_OFFSET, ASP_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN); proto_item_append_text(parameter_item, " (%d) ",tvb_get_ntohl(parameter_tvb,ASP_IDENTIFIER_OFFSET)); } /*--------------------------ASP identifier-------------------------------------*/ #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; const guint8* str; 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_ret_string(parameter_tree, hf_info_string, parameter_tvb, INFO_STRING_OFFSET, info_string_length, ENC_ASCII|ENC_NA, wmem_packet_scope(), &str); proto_item_append_text(parameter_item, " (%.*s)", info_string_length, str); } } 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 Reserved_TAG 0x00 #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 0x81 #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 ASP_IDENTIFIER_PARAMETER_TAG 0x11 #define NOT_USED_IN_IUA_PARAMETER_TAG 0x12 #define LINK_STATUS_PARAMETER_TAG 0x82 #define SA_BIT_STATUS_PARAMETER_TAG 0x83 #define ERROR_INDICATION_PARAMETER_TAG 0x84 static const value_string parameter_tag_values[] = { { Reserved_TAG, "Reserved" }, { INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Interface Identifier (integer)" }, { TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Interface Identifier (text)" }, { INFO_PARAMETER_TAG, "Info string" }, { DLCI_PARAMETER_TAG, "DLCI" }, { DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" }, { INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Interface Identifier Range" }, { 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, "Release Reason" }, { TEI_STATUS_PARAMETER_TAG, "TEI status" }, { ASP_IDENTIFIER_PARAMETER_TAG, "ASP Identifier" }, { NOT_USED_IN_IUA_PARAMETER_TAG, "Not used in IUA" }, { 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" }, { PROTOCOL_DATA_PARAMETER_TAG, "Protocol Data" }, { 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_reported_length(parameter_tvb) - length; paddingl = padding_length; /* create proto_tree stuff */ switch(iua_version){ case RFC: parameter_tree = proto_tree_add_subtree(v5ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, -1, ett_v5ua_parameter, ¶meter_item, val_to_str_const(tag, parameter_tag_values, "Unknown parameter")); /* add tag to the v5ua tree */ proto_tree_add_item(parameter_tree, hf_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH, ENC_BIG_ENDIAN); break; case DRAFT: default: parameter_tree = proto_tree_add_subtree(v5ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, -1, ett_v5ua_parameter, ¶meter_item, val_to_str_const(tag, parameter_tag_draft_values, "Unknown 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, ENC_BIG_ENDIAN); break; }; /* add length to the v5ua tree */ 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: 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, pinfo); /* 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_2, offset; tvbuff_t *layer3_data_tvb; offset = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) + 8; length_2 = msg_length - offset; if(length_2 > 0){ if(tvb_get_guint8(parameter_tvb, offset) == 0x48){ layer3_data_tvb = tvb_new_subset_length(parameter_tvb, offset, length_2); 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, pinfo); 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 ASP_IDENTIFIER_PARAMETER_TAG: dissect_asp_identifier_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, ENC_NA); } } /* 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_reported_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_length(parameters_tvb, offset, 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" }, { 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 #define MGMT_MSG_TYPE_TEI_QUERY_REQUEST5 5 #define MGMT_MSG_TYPE_TEI_QUERY_REQUEST 8 /* end */ /* 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 #define MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST5 5 #define MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST 8 /* end */ /* message types for ASPSM messages */ #define ASPSM_MSG_TYPE_Reserved 0 #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_Reserved 0 #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_Reserved 0 #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 #define MGMT_MSG_TYPE_TEI_STATUS_REQUEST5 5 #define MGMT_MSG_TYPE_TEI_STATUS_REQUEST 8 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 * 256 + MGMT_MSG_TYPE_TEI_QUERY_REQUEST, "TEI query request" }, { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_QUERY_REQUEST5, "TEI query request" }, { 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 confirmation" }, { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_IND, "TEI status indication" }, { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST, "TEI query request" }, { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST5, "TEI query request" }, { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_Reserved, "Reserved" }, { 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_Reserved , "Reserved" }, { 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_Reserved, "Reserved" }, { 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_Reserved, "Reserved" }, { 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 const value_string msg_class_type_values_short[] = { { 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 * 256 + MGMT_MSG_TYPE_TEI_QUERY_REQUEST, "TEI query request" }, { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_QUERY_REQUEST5, "TEI query request" }, { 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 confirmation" }, { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_IND, "TEI status indication" }, { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST, "TEI query request" }, { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST5, "TEI query request" }, { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_Reserved, "Reserved" }, { 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_Reserved , "Reserved" }, { 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_Reserved, "Reserved" }, { 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_Reserved, "Reserved" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_DATA_REQUEST, "Data Req" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_DATA_INDICATION, "Data Ind" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_UNIT_DATA_REQUEST, "U Data Req" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_UNIT_DATA_INDICATION, "U Data Ind" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_REQUEST, "Est Req" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_CONFIRM, "Est Conf" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_INDICATION, "Est Ind" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_REQUEST, "Rel Req" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_CONFIRM, "Rel Con" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_INDICATION, "Rel Ind" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_START_REPORTING,"Link Status Start Rep" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_STOP_REPORTING, "Link Status Stop Rep" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_INDICATION, "Link Status Ind" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_REQUEST, "Sa-Bit Set Req" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_CONFIRM, "Sa-Bit set Conf" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_REQUEST, "Sa-Bit Status Req" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_INDICATION, "Sa-Bit Status Ind" }, { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ERROR_INDICATION, "Error Ind" }, { 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 */ col_set_str(pinfo->cinfo, COL_INFO, val_to_str_const(message_class * 256 + message_type, msg_class_type_values_short, "UNKNOWN")); if (v5ua_tree) { /* create proto_tree stuff */ common_header_tree = proto_tree_add_subtree(v5ua_tree, common_header_tvb, COMMON_HEADER_OFFSET, -1, ett_v5ua_common_header, &common_header_item, "Common Msg-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, ENC_BIG_ENDIAN); proto_tree_add_item(common_header_tree, hf_reserved, common_header_tvb, COMMON_HEADER_RESERVED_OFFSET, COMMON_HEADER_RESERVED_LENGTH, ENC_BIG_ENDIAN); proto_tree_add_item(common_header_tree, hf_msg_class, common_header_tvb, COMMON_HEADER_MSG_CLASS_OFFSET, COMMON_HEADER_MSG_CLASS_LENGTH, ENC_BIG_ENDIAN); proto_tree_add_uint_format_value(common_header_tree, hf_msg_type, common_header_tvb, COMMON_HEADER_MSG_TYPE_OFFSET, COMMON_HEADER_MSG_TYPE_LENGTH, message_type, "%s ( %u )", val_to_str_const(message_class * 256 + message_type, msg_class_type_values, "reserved"), 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, ENC_BIG_ENDIAN); /* Add message type to the Common Msg-Header line */ proto_item_append_text(common_header_item, " (%s)",val_to_str_const(message_class * 256 + message_type, msg_class_type_values, "Unknown Msg-Type")); messageclassCopy = message_class; } /* 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_length(tvb, COMMON_HEADER_OFFSET, COMMON_HEADER_LENGTH); dissect_common_header(common_header_tvb, pinfo, v5ua_tree); parameters_tvb = tvb_new_subset_remaining(tvb, COMMON_HEADER_LENGTH); dissect_parameters(parameters_tvb, pinfo, tree, v5ua_tree); if (dlci_efa >= 0 && dlci_efa <= 8175) { if ((messageclassCopy == 0) || (messageclassCopy == 3) || (messageclassCopy == 4)) { messageclassCopy = -1; } else { col_append_str(pinfo->cinfo, COL_INFO, " | "); col_append_fstr(pinfo->cinfo, COL_INFO, "LinkId: %u", linkIdentifier); } } if (sa_bit_id > -1) { col_append_str(pinfo->cinfo, COL_INFO, " | "); col_append_fstr(pinfo->cinfo, COL_INFO, "SA7bit: %u", sa_bit_id); sa_bit_id = -1; } if (link_status_operational > -1) { if (link_status_operational == 0) { col_append_str(pinfo->cinfo, COL_INFO, " | operational"); } else if (link_status_operational == 1) { col_append_str(pinfo->cinfo, COL_INFO, " | non-operational"); } link_status_operational = -1; } } static int dissect_v5ua(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { 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 */ col_set_str(pinfo->cinfo, COL_PROTOCOL, "V5UA"); /* end */ col_clear(pinfo->cinfo, COL_INFO); /* create display subtree for the protocol */ ti = proto_tree_add_item(tree, proto_v5ua, tvb, 0, -1, ENC_NA); v5ua_tree = proto_item_add_subtree(ti, ett_v5ua); /* detect version of IUA */ iua_version = RFC; offset = COMMON_HEADER_LENGTH; remaining_length = tvb_reported_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==0x81){ 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; } else if(tag==0x11){ 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_reported_length_remaining(tvb, offset); } /* add a notice for the draft version */ if(iua_version == DRAFT){ col_set_str(pinfo->cinfo, COL_PROTOCOL, "V5UA (draft)"); } } /* dissect the message */ dissect_v5ua_message(tvb, pinfo, tree, v5ua_tree); return tvb_captured_length(tvb); } /* 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, NULL, 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 } }, #if 0 { &hf_msg_type_id, { "Message Type ID", "v5ua.msg_type_id", FT_UINT8, BASE_DEC, VALS(msg_class_type_values), 0x0, NULL, HFILL } }, #endif { &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, 0xffffffe0, 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_asp_identifier, { "ASP Identifier", "v5ua.asp_identifier", FT_UINT32, BASE_HEX, 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 } }, #if 0 { &hf_spare_efa, { "Envelope Function Address (spare)","v5ua.efa", FT_UINT16, BASE_DEC, NULL, ~7, NULL, HFILL } }, #endif { &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, VALS(link_status_values), 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 } } }; /* 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_add_dependency("q931", proto_v5ua); v52_handle = find_dissector_add_dependency("v52", proto_v5ua); dissector_add_uint("sctp.port", SCTP_PORT_V5UA_DRAFT, v5ua_handle); dissector_add_uint("sctp.port", SCTP_PORT_V5UA_RFC, v5ua_handle); dissector_add_uint("sctp.ppi", V5UA_PAYLOAD_PROTOCOL_ID, v5ua_handle); } /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 4 * tab-width: 8 * indent-tabs-mode: nil * End: * * vi: set shiftwidth=4 tabstop=8 expandtab: * :indentSize=4:tabSize=8:noTabs=true: */