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Diffstat (limited to 'epan/dissectors/packet-sua.c')
| -rw-r--r-- | epan/dissectors/packet-sua.c | 1763 |
1 files changed, 1763 insertions, 0 deletions
diff --git a/epan/dissectors/packet-sua.c b/epan/dissectors/packet-sua.c new file mode 100644 index 0000000000..cd90c4e390 --- /dev/null +++ b/epan/dissectors/packet-sua.c @@ -0,0 +1,1763 @@ +/* packet-sua.c + * Routines for SS7 SCCP-User Adaptation Layer (SUA) dissection + * It is hopefully (needs testing) compilant to + * http://www.ietf.org/internet-drafts/draft-ietf-sigtran-sua-15.txt + * + * Copyright 2002, 2003 Michael Tuexen <tuexen [AT] fh-muenster.de> + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * + * Copied from README.developer + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <epan/packet.h> +#include "prefs.h" +#include "sctpppids.h" + +#define NETWORK_BYTE_ORDER FALSE +#define ADD_PADDING(x) ((((x) + 3) >> 2) << 2) +#define SCTP_PORT_SUA 14001 + +#define RESERVED_1_LENGTH 1 +#define RESERVED_2_LENGTH 2 +#define RESERVED_3_LENGTH 3 + +#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 PARAMETER_TAG_LENGTH 2 +#define PARAMETER_LENGTH_LENGTH 2 +#define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH) + +#define PARAMETER_TAG_OFFSET 0 +#define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH) +#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH) +#define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET + +#define INFO_STRING_PARAMETER_TAG 0x0004 +#define ROUTING_CONTEXT_PARAMETER_TAG 0x0006 +#define DIAGNOSTIC_INFO_PARAMETER_TAG 0x0007 +#define HEARTBEAT_DATA_PARAMETER_TAG 0x0009 +#define TRAFFIC_MODE_TYPE_PARAMETER_TAG 0x000b +#define ERROR_CODE_PARAMETER_TAG 0x000c +#define STATUS_PARAMETER_TAG 0x000d +#define ASP_IDENTIFIER_PARAMETER_TAG 0x0011 +#define AFFECTED_POINT_CODE_PARAMETER_TAG 0x0012 +#define CORRELATION_ID_PARAMETER_TAG 0x0013 +#define REGISTRATION_RESULT_PARAMETER_TAG 0x0014 +#define DEREGISTRATION_RESULT_PARAMETER_TAG 0x0015 +#define REGISTRATION_STATUS_PARAMETER_TAG 0x0016 +#define DEREGISTRATION_STATUS_PARAMETER_TAG 0x0017 +#define LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG 0x0018 + +#define SS7_HOP_COUNTER_PARAMETER_TAG 0x0101 +#define SOURCE_ADDRESS_PARAMETER_TAG 0x0102 +#define DESTINATION_ADDRESS_PARAMETER_TAG 0x0103 +#define SOURCE_REFERENCE_NUMBER_PARAMETER_TAG 0x0104 +#define DESTINATION_REFERENCE_NUMBER_PARAMETER_TAG 0x0105 +#define SCCP_CAUSE_PARAMETER_TAG 0x0106 +#define SEQUENCE_NUMBER_PARAMETER_TAG 0x0107 +#define RECEIVE_SEQUENCE_NUMBER_PARAMETER_TAG 0x0108 +#define ASP_CAPABILITIES_PARAMETER_TAG 0x0109 +#define CREDIT_PARAMETER_TAG 0x010a +#define DATA_PARAMETER_TAG 0x010b +#define USER_CAUSE_PARAMETER_TAG 0x010c +#define NETWORK_APPEARANCE_PARAMETER_TAG 0x010d +#define ROUTING_KEY_PARAMETER_TAG 0x010e +#define DRN_LABEL_PARAMETER_TAG 0x010f +#define TID_LABEL_PARAMETER_TAG 0x0110 +#define ADDRESS_RANGE_PARAMETER_TAG 0x0111 +#define SMI_PARAMETER_TAG 0x0112 +#define IMPORTANCE_PARAMETER_TAG 0x0113 +#define MESSAGE_PRIORITY_PARAMETER_TAG 0x0114 +#define PROTOCOL_CLASS_PARAMETER_TAG 0x0115 +#define SEQUENCE_CONTROL_PARAMETER_TAG 0x0116 +#define SEGMENTATION_PARAMETER_TAG 0x0117 +#define CONGESTION_LEVEL_PARAMETER_TAG 0x0118 + +#define GLOBAL_TITLE_PARAMETER_TAG 0x8001 +#define POINT_CODE_PARAMETER_TAG 0x8002 +#define SUBSYSTEM_NUMBER_PARAMETER_TAG 0x8003 +#define IPV4_ADDRESS_PARAMETER_TAG 0x8004 +#define HOSTNAME_PARAMETER_TAG 0x8005 +#define IPV6_ADDRESS_PARAMETER_TAG 0x8006 + +static const value_string parameter_tag_values[] = { + { INFO_STRING_PARAMETER_TAG, "Info String" }, + { ROUTING_CONTEXT_PARAMETER_TAG, "Routing context" }, + { DIAGNOSTIC_INFO_PARAMETER_TAG, "Diagnostic info" }, + { HEARTBEAT_DATA_PARAMETER_TAG, "Heartbeat data" }, + { TRAFFIC_MODE_TYPE_PARAMETER_TAG, "Traffic mode type" }, + { ERROR_CODE_PARAMETER_TAG, "Error code" }, + { STATUS_PARAMETER_TAG, "Status" }, + { ASP_IDENTIFIER_PARAMETER_TAG, "ASP identifier" }, + { AFFECTED_POINT_CODE_PARAMETER_TAG, "Affected point code" }, + { CORRELATION_ID_PARAMETER_TAG, "Correlation ID" }, + { REGISTRATION_RESULT_PARAMETER_TAG, "Registration result" }, + { DEREGISTRATION_RESULT_PARAMETER_TAG, "Deregistration result" }, + { REGISTRATION_STATUS_PARAMETER_TAG, "Registration status" }, + { DEREGISTRATION_STATUS_PARAMETER_TAG, "Deregistration status" }, + { LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG, "Local routing key identifier" }, + { SS7_HOP_COUNTER_PARAMETER_TAG, "SS7 hop counter" }, + { SOURCE_ADDRESS_PARAMETER_TAG, "Source address" }, + { DESTINATION_ADDRESS_PARAMETER_TAG, "Destination address" }, + { SOURCE_REFERENCE_NUMBER_PARAMETER_TAG, "Source reference number" }, + { DESTINATION_REFERENCE_NUMBER_PARAMETER_TAG, "Destination reference number" }, + { SCCP_CAUSE_PARAMETER_TAG, "SCCP cause" }, + { SEQUENCE_NUMBER_PARAMETER_TAG, "Sequence number" }, + { RECEIVE_SEQUENCE_NUMBER_PARAMETER_TAG, "Receive sequence number" }, + { ASP_CAPABILITIES_PARAMETER_TAG, "ASP capabilities" }, + { CREDIT_PARAMETER_TAG, "Credit" }, + { DATA_PARAMETER_TAG, "Data" }, + { USER_CAUSE_PARAMETER_TAG, "User/Cause" }, + { NETWORK_APPEARANCE_PARAMETER_TAG, "Network appearance" }, + { ROUTING_KEY_PARAMETER_TAG, "Routing key" }, + { DRN_LABEL_PARAMETER_TAG, "DRN label" }, + { TID_LABEL_PARAMETER_TAG, "TID label" }, + { ADDRESS_RANGE_PARAMETER_TAG, "Address range" }, + { SMI_PARAMETER_TAG, "SMI" }, + { IMPORTANCE_PARAMETER_TAG, "Importance" }, + { MESSAGE_PRIORITY_PARAMETER_TAG, "Message priority" }, + { PROTOCOL_CLASS_PARAMETER_TAG, "Protocol class" }, + { SEQUENCE_CONTROL_PARAMETER_TAG, "Sequence control" }, + { SEGMENTATION_PARAMETER_TAG, "Segmentation" }, + { CONGESTION_LEVEL_PARAMETER_TAG, "Congestion level" }, + { GLOBAL_TITLE_PARAMETER_TAG, "Global title" }, + { POINT_CODE_PARAMETER_TAG, "Point code" }, + { SUBSYSTEM_NUMBER_PARAMETER_TAG, "Subsystem number" }, + { IPV4_ADDRESS_PARAMETER_TAG, "IPv4 address" }, + { HOSTNAME_PARAMETER_TAG, "Hostname" }, + { IPV6_ADDRESS_PARAMETER_TAG, "IPv6 address" }, + { 0, NULL } }; + +#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_CL_MESSAGE 7 +#define MESSAGE_CLASS_CO_MESSAGE 8 +#define MESSAGE_CLASS_RKM_MESSAGE 9 + +static const value_string message_class_values[] = { + { MESSAGE_CLASS_MGMT_MESSAGE, "Management 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_CL_MESSAGE, "Connectionless messages" }, + { MESSAGE_CLASS_CO_MESSAGE, "Connection-Oriented messages" }, + { MESSAGE_CLASS_RKM_MESSAGE, "Routing key management Messages" }, + { 0, NULL } }; + +#define MESSAGE_TYPE_ERR 0 +#define MESSAGE_TYPE_NTFY 1 + +#define MESSAGE_TYPE_DUNA 1 +#define MESSAGE_TYPE_DAVA 2 +#define MESSAGE_TYPE_DAUD 3 +#define MESSAGE_TYPE_SCON 4 +#define MESSAGE_TYPE_DUPU 5 +#define MESSAGE_TYPE_DRST 6 + +#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 + +#define MESSAGE_TYPE_ACTIVE 1 +#define MESSAGE_TYPE_INACTIVE 2 +#define MESSAGE_TYPE_ACTIVE_ACK 3 +#define MESSAGE_TYPE_INACTIVE_ACK 4 + +#define MESSAGE_TYPE_CLDT 1 +#define MESSAGE_TYPE_CLDR 2 + +#define MESSAGE_TYPE_CORE 1 +#define MESSAGE_TYPE_COAK 2 +#define MESSAGE_TYPE_COREF 3 +#define MESSAGE_TYPE_RELRE 4 +#define MESSAGE_TYPE_RELCO 5 +#define MESSAGE_TYPE_RESCO 6 +#define MESSAGE_TYPE_RESRE 7 +#define MESSAGE_TYPE_CODT 8 +#define MESSAGE_TYPE_CODA 9 +#define MESSAGE_TYPE_COERR 10 +#define MESSAGE_TYPE_COIT 11 + +#define MESSAGE_TYPE_REG_REQ 1 +#define MESSAGE_TYPE_REG_RSP 2 +#define MESSAGE_TYPE_DEREG_REQ 3 +#define MESSAGE_TYPE_DEREG_RSP 4 + + +static const value_string message_class_type_values[] = { + { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "Error (ERR)" }, + { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "Notify (NTFY)" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_DUNA, "Destination unavailable (DUNA)" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_DAVA, "Destination available (DAVA)" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_DAUD, "Destination state audit (DAUD)" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_SCON, "SS7 Network congestion state (SCON)" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_DUPU, "Destination userpart unavailable (DUPU)" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_DRST, "Destination Restricted (DRST)" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP up (UP)" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP down (DOWN)" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "Heartbeat (BEAT)" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP up ack (UP ACK)" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP down ack (DOWN ACK)" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "Heartbeat ack (BEAT ACK)" }, + { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP active (ACTIVE)" }, + { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP inactive (INACTIVE)" }, + { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP active ack (ACTIVE ACK)" }, + { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack (INACTIVE ACK)" }, + { MESSAGE_CLASS_CL_MESSAGE * 256 + MESSAGE_TYPE_CLDR , "Connectionless Data Response (CLDR)" }, + { MESSAGE_CLASS_CL_MESSAGE * 256 + MESSAGE_TYPE_CLDT , "Connectionless Data Transfer (CLDT)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_CORE , "Connection Request (CORE)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_COAK , "Connection Acknowledge (COAK)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_COREF , "Connection Refused (COREF)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_RELRE , "Release Request (RELRE)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_RELCO , "Release Complete (RELCO)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_RESCO , "Reset Confirm (RESCO)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_RESRE , "Reset Request (RESRE)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_CODT , "Connection Oriented Data Transfer (CODT)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_CODA , "Connection Oriented Data Acknowledge (CODA)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_COERR , "Connection Oriented Error (COERR)" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_COIT , "Inactivity Test (COIT)" }, + { MESSAGE_CLASS_RKM_MESSAGE * 256 + MESSAGE_TYPE_REG_REQ , "Registration Request (REG_REQ)" }, + { MESSAGE_CLASS_RKM_MESSAGE * 256 + MESSAGE_TYPE_REG_RSP , "Registartion Response (REG_RSP)" }, + { MESSAGE_CLASS_RKM_MESSAGE * 256 + MESSAGE_TYPE_DEREG_REQ , "Deregistration Request (DEREG_REQ)" }, + { MESSAGE_CLASS_RKM_MESSAGE * 256 + MESSAGE_TYPE_DEREG_RSP , "Deregistartion Response (DEREG_RSP)" }, + { 0, NULL } }; + +static const value_string message_class_type_acro_values[] = { + { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "ERR" }, + { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "NTFY" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_DUNA, "DUNA" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_DAVA, "DAVA" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_DAUD, "DAUD" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_SCON, "SCON" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_DUPU, "DUPU" }, + { MESSAGE_CLASS_SSNM_MESSAGE * 256 + MESSAGE_TYPE_DRST, "DRST" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP_UP" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP_DOWN" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "BEAT" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP_UP_ACK" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP_DOWN_ACK" }, + { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "BEAT_ACK" }, + { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP_ACTIVE" }, + { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP_INACTIVE" }, + { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP_ACTIVE_ACK" }, + { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP_INACTIVE_ACK" }, + { MESSAGE_CLASS_CL_MESSAGE * 256 + MESSAGE_TYPE_CLDR , "CLDR" }, + { MESSAGE_CLASS_CL_MESSAGE * 256 + MESSAGE_TYPE_CLDT , "CLDT" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_CORE , "CORE" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_COAK , "COAK" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_COREF , "COREF" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_RELRE , "RELRE" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_RELCO , "RELCO" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_RESCO , "RESCO" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_RESRE , "RESRE" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_CODT , "CODT" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_CODA , "CODA" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_COERR , "COERR" }, + { MESSAGE_CLASS_CO_MESSAGE * 256 + MESSAGE_TYPE_COIT , "COIT" }, + { MESSAGE_CLASS_RKM_MESSAGE * 256 + MESSAGE_TYPE_REG_REQ , "REG_REQ" }, + { MESSAGE_CLASS_RKM_MESSAGE * 256 + MESSAGE_TYPE_REG_RSP , "REG_RSP" }, + { MESSAGE_CLASS_RKM_MESSAGE * 256 + MESSAGE_TYPE_DEREG_REQ , "DEREG_REQ" }, + { MESSAGE_CLASS_RKM_MESSAGE * 256 + MESSAGE_TYPE_DEREG_RSP , "DEREG_RSP" }, + { 0, NULL } }; + +/* Initialize the protocol and registered fields */ +static int proto_sua = -1; +static int hf_version = -1; +static int hf_reserved = -1; +static int hf_message_class = -1; +static int hf_message_type = -1; +static int hf_message_length = -1; +static int hf_parameter_tag = -1; +static int hf_parameter_length = -1; +static int hf_parameter_value = -1; +static int hf_parameter_padding = -1; +static int hf_info_string = -1; +static int hf_routing_context = -1; +static int hf_diagnostic_information_info = -1; +static int hf_heartbeat_data = -1; +static int hf_traffic_mode_type = -1; +static int hf_error_code = -1; +static int hf_status_type = -1; +static int hf_status_info = -1; +static int hf_congestion_level = -1; +static int hf_asp_identifier = -1; +static int hf_mask = -1; +static int hf_dpc = -1; +static int hf_registration_status = -1; +static int hf_deregistration_status = -1; +static int hf_local_routing_key_identifier = -1; +static int hf_source_address_routing_indicator = -1; +static int hf_source_address_reserved_bits = -1; +static int hf_source_address_gt_bit = -1; +static int hf_source_address_pc_bit = -1; +static int hf_source_address_ssn_bit = -1; +static int hf_destination_address_routing_indicator = -1; +static int hf_destination_address_reserved_bits = -1; +static int hf_destination_address_gt_bit = -1; +static int hf_destination_address_pc_bit = -1; +static int hf_destination_address_ssn_bit = -1; +static int hf_ss7_hop_counter_counter = -1; +static int hf_ss7_hop_counter_reserved = -1; +static int hf_destination_reference_number = -1; +static int hf_source_reference_number = -1; +static int hf_cause_reserved = -1; +static int hf_cause_type = -1; +static int hf_cause_value = -1; +static int hf_sequence_number_reserved = -1; +static int hf_sequence_number_rec_number = -1; +static int hf_sequence_number_spare_bit = -1; +static int hf_sequence_number_sent_number = -1; +static int hf_sequence_number_more_data_bit = -1; +static int hf_receive_sequence_number_reserved = -1; +static int hf_receive_sequence_number_number = -1; +static int hf_receive_sequence_number_spare_bit = -1; +static int hf_asp_capabilities_reserved = -1; +static int hf_asp_capabilities_reserved_bits = -1; +static int hf_asp_capabilities_a_bit =-1; +static int hf_asp_capabilities_b_bit =-1; +static int hf_asp_capabilities_c_bit =-1; +static int hf_asp_capabilities_d_bit =-1; +static int hf_asp_capabilities_interworking = -1; +static int hf_credit = -1; +static int hf_data = -1; +static int hf_cause = -1; +static int hf_user = -1; +static int hf_network_appearance = -1; +static int hf_routing_key_identifier = -1; +static int hf_correlation_id = -1; +static int hf_importance_reserved = -1; +static int hf_importance = -1; +static int hf_message_priority_reserved = -1; +static int hf_message_priority = -1; +static int hf_protocol_class_reserved = -1; +static int hf_return_on_error_bit = -1; +static int hf_protocol_class = -1; +static int hf_sequence_control = -1; +static int hf_first_bit = -1; +static int hf_number_of_remaining_segments = -1; +static int hf_segmentation_reference = -1; +static int hf_smi = -1; +static int hf_smi_reserved = -1; +static int hf_tid_label_start = -1; +static int hf_tid_label_end = -1; +static int hf_tid_label_value = -1; +static int hf_drn_label_start = -1; +static int hf_drn_label_end = -1; +static int hf_drn_label_value = -1; +static int hf_gt_reserved = -1; +static int hf_gti = -1; +static int hf_number_of_digits = -1; +static int hf_translation_type = -1; +static int hf_numbering_plan = -1; +static int hf_nature_of_address = -1; +static int hf_global_title = -1; +static int hf_point_code_dpc = -1; +static int hf_ssn_reserved = -1; +static int hf_ssn_number = -1; +static int hf_ipv4 = -1; +static int hf_hostname = -1; +static int hf_ipv6 = -1; + +/* Initialize the subtree pointers */ +static gint ett_sua = -1; +static gint ett_sua_parameter = -1; +static gint ett_sua_source_address_indicator = -1; +static gint ett_sua_destination_address_indicator = -1; +static gint ett_sua_affected_destination = -1; +static gint ett_sua_first_remaining = -1; +static gint ett_sua_sequence_number_rec_number = -1; +static gint ett_sua_sequence_number_sent_number = -1; +static gint ett_sua_receive_sequence_number_number = -1; +static gint ett_sua_return_on_error_bit_and_protocol_class = -1; +static gint ett_sua_protcol_classes = -1; + +static dissector_handle_t data_handle; +static dissector_table_t sua_ssn_dissector_table; + +static void +dissect_parameters(tvbuff_t *tlv_tvb, proto_tree *tree, tvbuff_t **data_tvb, guint8 *source_ssn, guint8 *dest_ssn); + +static void +dissect_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *sua_tree) +{ + guint8 message_class, message_type; + + message_class = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET); + message_type = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET); + + if (check_col(pinfo->cinfo, COL_INFO)) + col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(message_class * 256 + message_type, message_class_type_acro_values, "reserved")); + + if (sua_tree) { + /* add the components of the common header to the protocol tree */ + proto_tree_add_item(sua_tree, hf_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(sua_tree, hf_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(sua_tree, hf_message_class, common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_uint_format(sua_tree, hf_message_type, common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, message_type, "Message Type: %s (%u)", + val_to_str(message_class * 256 + message_type, message_class_type_values, "reserved"), message_type); + proto_tree_add_item(sua_tree, hf_message_length, common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, NETWORK_BYTE_ORDER); + }; +} + +#define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_info_string_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + guint16 info_string_length; + + info_string_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; + proto_tree_add_item(parameter_tree, hf_info_string, parameter_tvb, INFO_STRING_OFFSET, info_string_length, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%.*s)", info_string_length, + (const char *)tvb_get_ptr(parameter_tvb, INFO_STRING_OFFSET, info_string_length)); +} + +#define ROUTING_CONTEXT_LENGTH 4 + +static void +dissect_routing_context_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + guint16 number_of_contexts, context_number; + gint context_offset; + + number_of_contexts = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) / 4; + context_offset = PARAMETER_VALUE_OFFSET; + for(context_number=1; context_number <= number_of_contexts; context_number++) { + proto_tree_add_item(parameter_tree, hf_routing_context, parameter_tvb, context_offset, ROUTING_CONTEXT_LENGTH, NETWORK_BYTE_ORDER); + context_offset += ROUTING_CONTEXT_LENGTH; + }; + proto_item_append_text(parameter_item, " (%u context%s)", number_of_contexts, plurality(number_of_contexts, "", "s")); +} + +#define DIAGNOSTIC_INFO_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + guint16 diag_info_length; + + diag_info_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; + proto_tree_add_item(parameter_tree, hf_diagnostic_information_info, parameter_tvb, DIAGNOSTIC_INFO_OFFSET, diag_info_length, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u byte%s)", diag_info_length, plurality(diag_info_length, "", "s")); +} + +#define HEARTBEAT_DATA_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + guint16 heartbeat_data_length; + + heartbeat_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; + proto_tree_add_item(parameter_tree, hf_heartbeat_data, parameter_tvb, HEARTBEAT_DATA_OFFSET, heartbeat_data_length, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u byte%s)", heartbeat_data_length, plurality(heartbeat_data_length, "", "s")); +} + +#define TRAFFIC_MODE_TYPE_OFFSET PARAMETER_VALUE_OFFSET +#define TRAFFIC_MODE_TYPE_LENGTH 4 + +static const value_string traffic_mode_type_values[] = { + { 1, "Over-ride" }, + { 2, "Load-share" }, + { 3, "Broadcast" }, + { 0, NULL } }; + +static void +dissect_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), traffic_mode_type_values, "unknown")); +} + +#define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET +#define ERROR_CODE_LENGTH 4 + +static const value_string error_code_values[] = { + { 0x01, "Invalid version" }, + { 0x03, "Unsupported message class" }, + { 0x04, "Unsupported message type" }, + { 0x05, "Unsupported traffic handling mode" }, + { 0x06, "Unexpected message" }, + { 0x07, "Protocol error" }, + { 0x09, "Invalid stream identifier" }, + { 0x0d, "Refused - management blocking" }, + { 0x0e, "ASP identifier required" }, + { 0x0f, "Invalid ASP identifier" }, + { 0x11, "Invalid parameter value" }, + { 0x12, "Parameter field error" }, + { 0x13, "Unexpected parameter" }, + { 0x14, "Destination status unknown" }, + { 0x15, "Invalid network appearance" }, + { 0x16, "Missing parameter" }, + { 0x19, "Invalid routing context" }, + { 0x1a, "No configured AS for ASP" }, + { 0x1b, "Subsystem status unknown" }, + { 0, NULL } }; + +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, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), error_code_values, "unknown")); +} + +#define STATUS_TYPE_LENGTH 2 +#define STATUS_INFO_LENGTH 2 +#define STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET +#define STATUS_INFO_OFFSET (STATUS_TYPE_OFFSET + STATUS_TYPE_LENGTH) + +#define AS_STATE_CHANGE_TYPE 1 +#define OTHER_TYPE 2 + +static const value_string status_type_values[] = { + { AS_STATE_CHANGE_TYPE, "Application server state change" }, + { OTHER_TYPE, "Other" }, + { 0, NULL } }; + +#define RESERVED_INFO 1 +#define AS_INACTIVE_INFO 2 +#define AS_ACTIVE_INFO 3 +#define AS_PENDING_INFO 4 + +#define INSUFFICIENT_ASP_RES_INFO 1 +#define ALTERNATE_ASP_ACTIVE_INFO 2 +#define ASP_FAILURE 3 + +static const value_string status_type_info_values[] = { + { AS_STATE_CHANGE_TYPE * 256 * 256 + RESERVED_INFO, "Reserved" }, + { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_INACTIVE_INFO, "Application server inactive" }, + { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_ACTIVE_INFO, "Application server active" }, + { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_PENDING_INFO, "Application server pending" }, + { OTHER_TYPE * 256 * 256 + INSUFFICIENT_ASP_RES_INFO, "Insufficient ASP resources active in AS" }, + { OTHER_TYPE * 256 * 256 + ALTERNATE_ASP_ACTIVE_INFO, "Alternate ASP active" }, + { OTHER_TYPE * 256 * 256 + ASP_FAILURE, "ASP Failure" }, + {0, NULL } }; + +static void +dissect_status_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + guint16 status_type, status_info; + + status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET); + status_info = tvb_get_ntohs(parameter_tvb, STATUS_INFO_OFFSET); + + proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_uint_format(parameter_tree, hf_status_info, parameter_tvb, STATUS_INFO_OFFSET, STATUS_INFO_LENGTH, + status_info, "Status info: %s (%u)", val_to_str(status_type * 256 * 256 + status_info, status_type_info_values, "unknown"), status_info); + + proto_item_append_text(parameter_item, " (%s)", val_to_str(status_type * 256 * 256 + status_info, status_type_info_values, "unknown")); +} + +#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, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, ASP_IDENTIFIER_OFFSET)); +} + +#define AFFECTED_MASK_LENGTH 1 +#define AFFECTED_DPC_LENGTH 3 +#define AFFECTED_DESTINATION_LENGTH (AFFECTED_MASK_LENGTH + AFFECTED_DPC_LENGTH) + +#define AFFECTED_MASK_OFFSET 0 +#define AFFECTED_DPC_OFFSET 1 + +static void +dissect_affected_destinations_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + guint16 number_of_destinations, destination_number; + gint destination_offset; + + number_of_destinations= (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) / 4; + destination_offset = PARAMETER_VALUE_OFFSET; + for(destination_number=1; destination_number <= number_of_destinations; destination_number++) { + proto_tree_add_item(parameter_tree, hf_mask, parameter_tvb, destination_offset + AFFECTED_MASK_OFFSET, AFFECTED_MASK_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_dpc, parameter_tvb, destination_offset + AFFECTED_DPC_OFFSET, AFFECTED_DPC_LENGTH, NETWORK_BYTE_ORDER); + destination_offset += AFFECTED_DESTINATION_LENGTH; + } + proto_item_append_text(parameter_item, " (%u destination%s)", number_of_destinations, plurality(number_of_destinations, "", "s")); +} + +#define CORRELATION_ID_LENGTH 4 +#define CORRELATION_ID_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_correlation_id_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, CORRELATION_ID_OFFSET)); +} + +static void +dissect_registration_result_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + parameters_tvb = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree, NULL, NULL, NULL); +} + +static void +dissect_deregistration_result_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + parameters_tvb = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree, NULL, NULL, NULL); +} + +#define REGISTRATION_STATUS_LENGTH 4 +#define REGISTRATION_STATUS_OFFSET PARAMETER_VALUE_OFFSET + +static const value_string registration_status_values[] = { + { 0, "Successfully registered" }, + { 1, "Error - unknown" }, + { 2, "Error - invalid destination address" }, + { 3, "Error - invalid network appearance" }, + { 4, "Error - invalid routing key" }, + { 5, "Error - permission denied" }, + { 6, "Error - cannot support unique routing" }, + { 7, "Error - routing key not currently provisioned" }, + { 8, "Error - insufficient resources" }, + { 9, "Error - unsupported RK parameter field" }, + { 10, "Error - unsupported/invalid traffic mode type" }, + { 11, "Error - routing key change refused" }, + { 0, NULL } }; + +static void +dissect_registration_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_registration_status, parameter_tvb, REGISTRATION_STATUS_OFFSET, REGISTRATION_STATUS_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, REGISTRATION_STATUS_OFFSET), registration_status_values, "unknown")); +} + +#define DEREGISTRATION_STATUS_LENGTH 4 +#define DEREGISTRATION_STATUS_OFFSET PARAMETER_VALUE_OFFSET + +static const value_string deregistration_status_values[] = { + { 0, "Successfully deregistered" }, + { 1, "Error - unknown" }, + { 2, "Error - invalid routing context" }, + { 3, "Error - permission denied" }, + { 4, "Error - not registered" }, + { 5, "Error - ASP currently active for routing context" }, + { 0, NULL } }; + +static void +dissect_deregistration_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_deregistration_status, parameter_tvb, DEREGISTRATION_STATUS_OFFSET, DEREGISTRATION_STATUS_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, DEREGISTRATION_STATUS_OFFSET), deregistration_status_values, "unknown")); +} + +#define LOCAL_ROUTING_KEY_IDENTIFIER_LENGTH 4 +#define LOCAL_ROUTING_KEY_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_local_routing_key_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_local_routing_key_identifier, parameter_tvb, LOCAL_ROUTING_KEY_IDENTIFIER_OFFSET, LOCAL_ROUTING_KEY_IDENTIFIER_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%d)", tvb_get_ntohl(parameter_tvb, LOCAL_ROUTING_KEY_IDENTIFIER_OFFSET)); +} + +#define SS7_HOP_COUNTER_LENGTH 1 +#define SS7_HOP_COUNTER_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_3_LENGTH) + +static void +dissect_ss7_hop_counter_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_ss7_hop_counter_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_3_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_ss7_hop_counter_counter, parameter_tvb, SS7_HOP_COUNTER_OFFSET, SS7_HOP_COUNTER_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_guint8(parameter_tvb, SS7_HOP_COUNTER_OFFSET)); +} + +#define ROUTING_INDICATOR_LENGTH 2 +#define ADDRESS_INDICATOR_LENGTH 2 + +#define ROUTING_INDICATOR_OFFSET PARAMETER_VALUE_OFFSET +#define ADDRESS_INDICATOR_OFFSET (ROUTING_INDICATOR_OFFSET + ROUTING_INDICATOR_LENGTH) +#define ADDRESS_PARAMETERS_OFFSET (ADDRESS_INDICATOR_OFFSET + ADDRESS_INDICATOR_LENGTH) + +#define RESERVED_ROUTING_INDICATOR 0 +#define ROUTE_ON_GT_ROUTING_INDICATOR 1 +#define ROUTE_ON_SSN_PC_ROUTING_INDICATOR 2 +#define ROUTE_ON_HOSTNAMEROUTING_INDICATOR 3 +#define ROUTE_ON_SSN_IP_ROUTING_INDICATOR 4 + +static const value_string routing_indicator_values[] = { + { RESERVED_ROUTING_INDICATOR, "Reserved" }, + { ROUTE_ON_GT_ROUTING_INDICATOR, "Route on Global Title" }, + { ROUTE_ON_SSN_PC_ROUTING_INDICATOR, "Route on SSN + PC" }, + { ROUTE_ON_HOSTNAMEROUTING_INDICATOR, "Route on Hostname" }, + { ROUTE_ON_SSN_IP_ROUTING_INDICATOR, "Route on SSN + IP Address" }, + { 0, NULL } }; + +#define ADDRESS_RESERVED_BITMASK 0xfff8 +#define ADDRESS_GT_BITMASK 0x0004 +#define ADDRESS_PC_BITMASK 0x0002 +#define ADDRESS_SSN_BITMASK 0x0001 + +static void +dissect_source_address_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, guint8 *ssn) +{ + proto_item *address_indicator_item; + proto_tree *address_indicator_tree; + tvbuff_t *parameters_tvb; + + if(parameter_tree) { + proto_tree_add_item(parameter_tree, hf_source_address_routing_indicator, parameter_tvb, ROUTING_INDICATOR_OFFSET, ROUTING_INDICATOR_LENGTH, NETWORK_BYTE_ORDER); + address_indicator_item = proto_tree_add_text(parameter_tree, parameter_tvb, ADDRESS_INDICATOR_OFFSET, ADDRESS_INDICATOR_LENGTH, "Address Indicator"); + address_indicator_tree = proto_item_add_subtree(address_indicator_item, ett_sua_source_address_indicator); + proto_tree_add_item(address_indicator_tree, hf_source_address_reserved_bits, parameter_tvb, ADDRESS_INDICATOR_OFFSET, ADDRESS_INDICATOR_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(address_indicator_tree, hf_source_address_gt_bit, parameter_tvb, ADDRESS_INDICATOR_OFFSET, ADDRESS_INDICATOR_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(address_indicator_tree, hf_source_address_pc_bit, parameter_tvb, ADDRESS_INDICATOR_OFFSET, ADDRESS_INDICATOR_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(address_indicator_tree, hf_source_address_ssn_bit, parameter_tvb, ADDRESS_INDICATOR_OFFSET, ADDRESS_INDICATOR_LENGTH, NETWORK_BYTE_ORDER); + } + + parameters_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETERS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree, NULL, ssn, NULL); +} + +static void +dissect_destination_address_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, guint8 *ssn) +{ + proto_item *address_indicator_item; + proto_tree *address_indicator_tree; + tvbuff_t *parameters_tvb; + + if(parameter_tree) { + proto_tree_add_item(parameter_tree, hf_destination_address_routing_indicator, parameter_tvb, ROUTING_INDICATOR_OFFSET, ROUTING_INDICATOR_LENGTH, NETWORK_BYTE_ORDER); + address_indicator_item = proto_tree_add_text(parameter_tree, parameter_tvb, ADDRESS_INDICATOR_OFFSET, ADDRESS_INDICATOR_LENGTH, "Address Indicator"); + address_indicator_tree = proto_item_add_subtree(address_indicator_item, ett_sua_destination_address_indicator); + proto_tree_add_item(address_indicator_tree, hf_destination_address_reserved_bits, parameter_tvb, ADDRESS_INDICATOR_OFFSET, ADDRESS_INDICATOR_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(address_indicator_tree, hf_destination_address_gt_bit, parameter_tvb, ADDRESS_INDICATOR_OFFSET, ADDRESS_INDICATOR_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(address_indicator_tree, hf_destination_address_pc_bit, parameter_tvb, ADDRESS_INDICATOR_OFFSET, ADDRESS_INDICATOR_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(address_indicator_tree, hf_destination_address_ssn_bit, parameter_tvb, ADDRESS_INDICATOR_OFFSET, ADDRESS_INDICATOR_LENGTH, NETWORK_BYTE_ORDER); + } + + parameters_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETERS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree, NULL, NULL, ssn); +} + +#define SOURCE_REFERENCE_NUMBER_LENGTH 4 +#define SOURCE_REFERENCE_NUMBER_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_source_reference_number_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_source_reference_number, parameter_tvb, SOURCE_REFERENCE_NUMBER_OFFSET, SOURCE_REFERENCE_NUMBER_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, SOURCE_REFERENCE_NUMBER_OFFSET)); +} + +#define DESTINATION_REFERENCE_NUMBER_LENGTH 4 +#define DESTINATION_REFERENCE_NUMBER_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_destination_reference_number_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_destination_reference_number, parameter_tvb, DESTINATION_REFERENCE_NUMBER_OFFSET, DESTINATION_REFERENCE_NUMBER_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, DESTINATION_REFERENCE_NUMBER_OFFSET)); +} + +#define CAUSE_TYPE_LENGTH 1 +#define CAUSE_VALUE_LENGTH 1 + +#define CAUSE_TYPE_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_2_LENGTH) +#define CAUSE_VALUE_OFFSET (CAUSE_TYPE_OFFSET + CAUSE_TYPE_LENGTH) + +static const value_string cause_type_values[] = { + { 0x1, "Return Cause" }, + { 0x2, "Refusual Cause" }, + { 0x3, "Release Cause" }, + { 0x4, "Reset Cause" }, + { 0x5, "Error cause" }, + { 0, NULL } }; + +static void +dissect_sccp_cause_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_cause_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_2_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_cause_type, parameter_tvb, CAUSE_TYPE_OFFSET, CAUSE_TYPE_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_cause_value, parameter_tvb, CAUSE_VALUE_OFFSET, CAUSE_VALUE_LENGTH, NETWORK_BYTE_ORDER); + + proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_guint8(parameter_tvb, CAUSE_TYPE_OFFSET), cause_type_values, "unknown")); +} + +#define SEQUENCE_NUMBER_REC_SEQ_LENGTH 1 +#define SEQUENCE_NUMBER_SENT_SEQ_LENGTH 1 +#define SEQUENCE_NUMBER_REC_SEQ_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_2_LENGTH) +#define SEQUENCE_NUMBER_SENT_SEQ_OFFSET (SEQUENCE_NUMBER_REC_SEQ_OFFSET + SEQUENCE_NUMBER_REC_SEQ_LENGTH) + +#define SEQ_NUM_MASK 0xFE +#define SPARE_BIT_MASK 0x01 +#define MORE_DATA_BIT_MASK 0x01 + +static const true_false_string more_data_bit_value = { + "More Data", + "Not More Data" +}; + +static void +dissect_sequence_number_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + proto_item *sent_sequence_number_item; + proto_tree *sent_sequence_number_tree; + proto_item *receive_sequence_number_item; + proto_tree *receive_sequence_number_tree; + + proto_tree_add_item(parameter_tree, hf_sequence_number_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_2_LENGTH, NETWORK_BYTE_ORDER); + + receive_sequence_number_item = proto_tree_add_text(parameter_tree, parameter_tvb, SEQUENCE_NUMBER_REC_SEQ_OFFSET, SEQUENCE_NUMBER_REC_SEQ_LENGTH, "Receive Sequence Number"); + receive_sequence_number_tree = proto_item_add_subtree(receive_sequence_number_item, ett_sua_sequence_number_rec_number); + proto_tree_add_item(receive_sequence_number_tree, hf_sequence_number_rec_number, parameter_tvb, SEQUENCE_NUMBER_REC_SEQ_OFFSET, SEQUENCE_NUMBER_REC_SEQ_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(receive_sequence_number_tree, hf_sequence_number_more_data_bit, parameter_tvb, SEQUENCE_NUMBER_REC_SEQ_OFFSET, SEQUENCE_NUMBER_REC_SEQ_LENGTH, NETWORK_BYTE_ORDER); + + sent_sequence_number_item = proto_tree_add_text(parameter_tree, parameter_tvb, SEQUENCE_NUMBER_SENT_SEQ_OFFSET, SEQUENCE_NUMBER_SENT_SEQ_LENGTH, "Sent Sequence Number"); + sent_sequence_number_tree = proto_item_add_subtree(sent_sequence_number_item, ett_sua_sequence_number_sent_number); + proto_tree_add_item(sent_sequence_number_tree, hf_sequence_number_sent_number, parameter_tvb, SEQUENCE_NUMBER_SENT_SEQ_OFFSET, SEQUENCE_NUMBER_SENT_SEQ_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(sent_sequence_number_tree, hf_sequence_number_spare_bit, parameter_tvb, SEQUENCE_NUMBER_SENT_SEQ_OFFSET, SEQUENCE_NUMBER_SENT_SEQ_LENGTH, NETWORK_BYTE_ORDER); +} + +#define RECEIVE_SEQUENCE_NUMBER_REC_SEQ_LENGTH 1 +#define RECEIVE_SEQUENCE_NUMBER_REC_SEQ_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_3_LENGTH) + +static void +dissect_receive_sequence_number_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + proto_item *receive_sequence_number_item; + proto_tree *receive_sequence_number_tree; + + proto_tree_add_item(parameter_tree, hf_receive_sequence_number_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_3_LENGTH, NETWORK_BYTE_ORDER); + receive_sequence_number_item = proto_tree_add_text(parameter_tree, parameter_tvb, RECEIVE_SEQUENCE_NUMBER_REC_SEQ_OFFSET, RECEIVE_SEQUENCE_NUMBER_REC_SEQ_LENGTH, "Receive Sequence Number"); + receive_sequence_number_tree = proto_item_add_subtree(receive_sequence_number_item, ett_sua_receive_sequence_number_number); + proto_tree_add_item(receive_sequence_number_tree, hf_receive_sequence_number_number, parameter_tvb, RECEIVE_SEQUENCE_NUMBER_REC_SEQ_OFFSET, RECEIVE_SEQUENCE_NUMBER_REC_SEQ_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(receive_sequence_number_tree, hf_receive_sequence_number_spare_bit, parameter_tvb, RECEIVE_SEQUENCE_NUMBER_REC_SEQ_OFFSET, RECEIVE_SEQUENCE_NUMBER_REC_SEQ_LENGTH, NETWORK_BYTE_ORDER); +} + +#define PROTOCOL_CLASSES_LENGTH 1 +#define INTERWORKING_LENGTH 1 +#define PROTOCOL_CLASSES_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_2_LENGTH) +#define INTERWORKING_OFFSET (PROTOCOL_CLASSES_OFFSET + PROTOCOL_CLASSES_LENGTH) + +#define A_BIT_MASK 0x08 +#define B_BIT_MASK 0x04 +#define C_BIT_MASK 0x02 +#define D_BIT_MASK 0x01 +#define RESERVED_BITS_MASK 0xF0 + +static const true_false_string sua_supported_bit_value = { + "Supported", + "Unsupported" +}; + +static const value_string interworking_values[] = { + { 0x0, "No Interworking with SS7 Networks" }, + { 0x1, "IP-Signalling Endpoint interworking with with SS7 networks" }, + { 0x2, "Signalling Gateway" }, + { 0x3, "Relay Node Support" }, + { 0, NULL } }; + +static void +dissect_asp_capabilities_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + proto_item *protocol_classes_item; + proto_tree *protocol_classes_tree; + + proto_tree_add_item(parameter_tree, hf_asp_capabilities_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_2_LENGTH, NETWORK_BYTE_ORDER); + protocol_classes_item = proto_tree_add_text(parameter_tree, parameter_tvb, PROTOCOL_CLASSES_OFFSET, PROTOCOL_CLASSES_LENGTH, "Protocol classes"); + protocol_classes_tree = proto_item_add_subtree(protocol_classes_item, ett_sua_protcol_classes); + proto_tree_add_item(protocol_classes_tree, hf_asp_capabilities_reserved_bits, parameter_tvb, PROTOCOL_CLASSES_OFFSET, PROTOCOL_CLASSES_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(protocol_classes_tree, hf_asp_capabilities_a_bit, parameter_tvb, PROTOCOL_CLASSES_OFFSET, PROTOCOL_CLASSES_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(protocol_classes_tree, hf_asp_capabilities_b_bit, parameter_tvb, PROTOCOL_CLASSES_OFFSET, PROTOCOL_CLASSES_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(protocol_classes_tree, hf_asp_capabilities_c_bit, parameter_tvb, PROTOCOL_CLASSES_OFFSET, PROTOCOL_CLASSES_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(protocol_classes_tree, hf_asp_capabilities_d_bit, parameter_tvb, PROTOCOL_CLASSES_OFFSET, PROTOCOL_CLASSES_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_asp_capabilities_interworking, parameter_tvb, INTERWORKING_OFFSET, INTERWORKING_LENGTH, NETWORK_BYTE_ORDER); +} + +#define CREDIT_LENGTH 4 +#define CREDIT_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_credit_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_credit, parameter_tvb, CREDIT_OFFSET, CREDIT_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, CREDIT_OFFSET)); +} + +#define DATA_PARAMETER_DATA_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item, tvbuff_t **data_tvb) +{ + guint16 data_length; + + data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; + + if(parameter_tree) { + proto_tree_add_item(parameter_tree, hf_data, parameter_tvb, DATA_PARAMETER_DATA_OFFSET, data_length, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", data_length, plurality(data_length, "", "s")); + } + + if(data_tvb) + { + *data_tvb = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, data_length, data_length); + } +} + + +#define CAUSE_LENGTH 2 +#define USER_LENGTH 2 +#define CAUSE_OFFSET PARAMETER_VALUE_OFFSET +#define USER_OFFSET (CAUSE_OFFSET + CAUSE_LENGTH) + +static const value_string cause_values[] = { + { 0x0, "Remote SCCP unavailable, Reason unknown" }, + { 0x2, "Remote SCCP unequipped" }, + { 0x3, "Remote SCCP inaccessable" }, + { 0, NULL } }; + +static void +dissect_user_cause_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + proto_tree_add_item(parameter_tree, hf_cause, parameter_tvb, CAUSE_OFFSET, CAUSE_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_user, parameter_tvb, USER_OFFSET, USER_LENGTH, NETWORK_BYTE_ORDER); +} + +#define NETWORK_APPEARANCE_LENGTH 4 +#define NETWORK_APPEARANCE_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_network_appearance_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_network_appearance, parameter_tvb, NETWORK_APPEARANCE_OFFSET, NETWORK_APPEARANCE_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, NETWORK_APPEARANCE_OFFSET)); +} + +static void +dissect_routing_key_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + parameters_tvb = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree, NULL, NULL, NULL); +} +#define DRN_START_LENGTH 1 +#define DRN_END_LENGTH 1 +#define DRN_VALUE_LENGTH 2 + +#define DRN_START_OFFSET PARAMETER_VALUE_OFFSET +#define DRN_END_OFFSET (DRN_START_OFFSET + DRN_START_LENGTH) +#define DRN_VALUE_OFFSET (DRN_END_OFFSET + DRN_END_LENGTH) + +static void +dissect_drn_label_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + proto_tree_add_item(parameter_tree, hf_drn_label_start, parameter_tvb, DRN_START_OFFSET, DRN_START_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_drn_label_end, parameter_tvb, DRN_END_OFFSET, DRN_END_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_drn_label_value, parameter_tvb, DRN_VALUE_OFFSET, DRN_VALUE_LENGTH, NETWORK_BYTE_ORDER); +} + +#define TID_START_LENGTH 1 +#define TID_END_LENGTH 1 +#define TID_VALUE_LENGTH 2 + +#define TID_START_OFFSET PARAMETER_VALUE_OFFSET +#define TID_END_OFFSET (TID_START_OFFSET + TID_START_LENGTH) +#define TID_VALUE_OFFSET (TID_END_OFFSET + TID_END_LENGTH) + +static void +dissect_tid_label_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + proto_tree_add_item(parameter_tree, hf_tid_label_start, parameter_tvb, TID_START_OFFSET, TID_START_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_tid_label_end, parameter_tvb, TID_END_OFFSET, TID_END_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_tid_label_value, parameter_tvb, TID_VALUE_OFFSET, TID_VALUE_LENGTH, NETWORK_BYTE_ORDER); +} + +#define ADDRESS_RANGE_ADDRESS_PARAMETERS_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_address_range_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + parameters_tvb = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree, NULL, NULL, NULL); +} + +#define SMI_LENGTH 1 +#define SMI_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_3_LENGTH) + +static void +dissect_smi_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_smi_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_3_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_smi, parameter_tvb, SMI_OFFSET, SMI_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_guint8(parameter_tvb, SMI_OFFSET)); +} + +#define IMPORTANCE_LENGTH 1 +#define IMPORTANCE_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_3_LENGTH) + +static void +dissect_importance_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_importance_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_3_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_importance, parameter_tvb, IMPORTANCE_OFFSET, IMPORTANCE_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_guint8(parameter_tvb, IMPORTANCE_OFFSET)); +} + +#define MESSAGE_PRIORITY_LENGTH 1 +#define MESSAGE_PRIORITY_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_3_LENGTH) + +static void +dissect_message_priority_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_message_priority_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_3_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_message_priority, parameter_tvb, MESSAGE_PRIORITY_OFFSET, MESSAGE_PRIORITY_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_guint8(parameter_tvb, MESSAGE_PRIORITY_OFFSET)); +} + +#define PROTOCOL_CLASS_LENGTH 1 +#define PROTOCOL_CLASS_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_3_LENGTH) + +#define RETURN_ON_ERROR_BIT_MASK 0x80 +#define PROTOCOL_CLASS_MASK 0x7f + + +static const true_false_string return_on_error_bit_value = { + "Return Message On Error", + "No Special Options" +}; + +static void +dissect_protocol_class_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + proto_item *protocol_class_item; + proto_tree *protocol_class_tree; + + proto_tree_add_item(parameter_tree, hf_protocol_class_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_3_LENGTH, NETWORK_BYTE_ORDER); + + protocol_class_item = proto_tree_add_text(parameter_tree, parameter_tvb, PROTOCOL_CLASS_OFFSET, PROTOCOL_CLASS_LENGTH, "Protocol Class"); + protocol_class_tree = proto_item_add_subtree(protocol_class_item, ett_sua_return_on_error_bit_and_protocol_class); + + proto_tree_add_item(protocol_class_tree, hf_return_on_error_bit, parameter_tvb, PROTOCOL_CLASS_OFFSET, PROTOCOL_CLASS_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(protocol_class_tree, hf_protocol_class, parameter_tvb, PROTOCOL_CLASS_OFFSET, PROTOCOL_CLASS_LENGTH, NETWORK_BYTE_ORDER); +} + +#define SEQUENCE_CONTROL_LENGTH 4 +#define SEQUENCE_CONTROL_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_sequence_control_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_sequence_control, parameter_tvb, SEQUENCE_CONTROL_OFFSET, SEQUENCE_CONTROL_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, SEQUENCE_CONTROL_OFFSET)); +} + +#define FIRST_REMAINING_LENGTH 1 +#define SEGMENTATION_REFERENCE_LENGTH 3 +#define FIRST_REMAINING_OFFSET PARAMETER_VALUE_OFFSET +#define SEGMENTATION_REFERENCE_OFFSET (FIRST_REMAINING_OFFSET + FIRST_REMAINING_LENGTH) + +#define FIRST_BIT_MASK 0x80 +#define NUMBER_OF_SEGMENTS_MASK 0x7f + +static const true_false_string first_bit_value = { + "First segment", + "Subsequent segment" +}; + +static void +dissect_segmentation_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + proto_item *first_remaining_item; + proto_tree *first_remaining_tree; + + first_remaining_item = proto_tree_add_text(parameter_tree, parameter_tvb, FIRST_REMAINING_OFFSET, FIRST_REMAINING_LENGTH, "First / Remaining"); + first_remaining_tree = proto_item_add_subtree(first_remaining_item, ett_sua_first_remaining); + proto_tree_add_item(first_remaining_tree, hf_first_bit, parameter_tvb, FIRST_REMAINING_OFFSET, FIRST_REMAINING_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(first_remaining_tree, hf_number_of_remaining_segments, parameter_tvb, FIRST_REMAINING_OFFSET, FIRST_REMAINING_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_segmentation_reference, parameter_tvb, SEGMENTATION_REFERENCE_OFFSET, SEGMENTATION_REFERENCE_LENGTH, NETWORK_BYTE_ORDER); +} + +#define CONGESTION_LEVEL_LENGTH 4 +#define CONGESTION_LEVEL_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_congestion_level_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_congestion_level, parameter_tvb, CONGESTION_LEVEL_OFFSET, CONGESTION_LEVEL_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, CONGESTION_LEVEL_OFFSET)); +} + +#define GTI_LENGTH 1 +#define NO_OF_DIGITS_LENGTH 1 +#define TRANSLATION_TYPE_LENGTH 1 +#define NUMBERING_PLAN_LENGTH 1 +#define NATURE_OF_ADDRESS_LENGTH 1 + +#define GTI_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_3_LENGTH) +#define NO_OF_DIGITS_OFFSET (GTI_OFFSET + GTI_LENGTH) +#define TRANSLATION_TYPE_OFFSET (NO_OF_DIGITS_OFFSET + NO_OF_DIGITS_LENGTH) +#define NUMBERING_PLAN_OFFSET (TRANSLATION_TYPE_OFFSET + TRANSLATION_TYPE_LENGTH) +#define NATURE_OF_ADDRESS_OFFSET (NUMBERING_PLAN_OFFSET + NUMBERING_PLAN_LENGTH) +#define GLOBAL_TITLE_OFFSET (NATURE_OF_ADDRESS_OFFSET + NATURE_OF_ADDRESS_LENGTH) + +#define ISDN_TELEPHONY_NUMBERING_PLAN 1 +#define GENERIC_NUMBERING_PLAN 2 +#define DATA_NUMBERING_PLAN 3 +#define TELEX_NUMBERING_PLAN 4 +#define MARITIME_MOBILE_NUMBERING_PLAN 5 +#define LAND_MOBILE_NUMBERING_PLAN 6 +#define ISDN_MOBILE_NUMBERING_PLAN 7 +#define PRIVATE_NETWORK_NUMBERING_PLAN 14 + +static const value_string numbering_plan_values[] = { + { ISDN_TELEPHONY_NUMBERING_PLAN, "ISDN/Telephony Numbering Plan (Rec. E.161 and E.164)" }, + { GENERIC_NUMBERING_PLAN, "Generic Numbering Plan" }, + { DATA_NUMBERING_PLAN, "Data Numbering Plan (Rec. X.121)" }, + { TELEX_NUMBERING_PLAN, "Telex Numbering Plan (Rec. F.69)" }, + { MARITIME_MOBILE_NUMBERING_PLAN, "Maritime Mobile Numbering Plan (Rec. E.210 and E.211)" }, + { LAND_MOBILE_NUMBERING_PLAN, "Land Mobile Numbering Plan (Rec. E.212)" }, + { ISDN_MOBILE_NUMBERING_PLAN, "ISDN/Mobile Numbering Plan (Rec. E.214)" }, + { PRIVATE_NETWORK_NUMBERING_PLAN, "Private Network Or Network-Specific Numbering Plan" }, + { 0, NULL } }; + +#define UNKNOWN_NATURE_OF_ADDRESS 0 +#define SUBSCRIBER_NUMBER_NATURE_OF_ADDRESS 1 +#define RESERVED_FOR_NATIONAL_USE_NATURE_OF_ADDRESS 2 +#define NATIONAL_SIGNIFICANT_NUMBER_NATURE_OF_ADDRESS 3 +#define INTERNATION_NUMBER_NATURE_OF_ADDRESS 4 + +static const value_string nature_of_address_values[] = { + { UNKNOWN_NATURE_OF_ADDRESS, "Unknown" }, + { SUBSCRIBER_NUMBER_NATURE_OF_ADDRESS, "Subscriber Number" }, + { RESERVED_FOR_NATIONAL_USE_NATURE_OF_ADDRESS, "Reserved For National Use" }, + { NATIONAL_SIGNIFICANT_NUMBER_NATURE_OF_ADDRESS, "Natinal Significant Number" }, + { INTERNATION_NUMBER_NATURE_OF_ADDRESS, "International Number" }, + { 0, NULL } }; + +static void +dissect_global_title_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + guint16 global_title_length; + + global_title_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - + (PARAMETER_HEADER_LENGTH + RESERVED_3_LENGTH + GTI_LENGTH + NO_OF_DIGITS_LENGTH + TRANSLATION_TYPE_LENGTH + NUMBERING_PLAN_LENGTH + NATURE_OF_ADDRESS_LENGTH); + proto_tree_add_item(parameter_tree, hf_gt_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_3_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_gti, parameter_tvb, GTI_OFFSET, GTI_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_number_of_digits, parameter_tvb, NO_OF_DIGITS_OFFSET, NO_OF_DIGITS_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_translation_type, parameter_tvb, TRANSLATION_TYPE_OFFSET, TRANSLATION_TYPE_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_numbering_plan, parameter_tvb, NUMBERING_PLAN_OFFSET, NUMBERING_PLAN_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_nature_of_address, parameter_tvb, NATURE_OF_ADDRESS_OFFSET, NATURE_OF_ADDRESS_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_global_title, parameter_tvb, GLOBAL_TITLE_OFFSET, global_title_length, NETWORK_BYTE_ORDER); +} + +#define POINT_CODE_LENGTH 4 +#define POINT_CODE_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_point_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_point_code_dpc, parameter_tvb, POINT_CODE_OFFSET, POINT_CODE_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, POINT_CODE_OFFSET)); +} + +#define SSN_LENGTH 1 +#define SSN_OFFSET (PARAMETER_VALUE_OFFSET + RESERVED_3_LENGTH) +#define INVALID_SSN 0xff + +static void +dissect_ssn_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item, guint8 *ssn) +{ + *ssn = tvb_get_guint8(parameter_tvb, SSN_OFFSET); + + if(parameter_tree) { + proto_tree_add_item(parameter_tree, hf_ssn_reserved, parameter_tvb, PARAMETER_VALUE_OFFSET, RESERVED_3_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_ssn_number, parameter_tvb, SSN_OFFSET, SSN_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u)", *ssn); + } +} + +#define IPV4_ADDRESS_LENGTH 4 +#define IPV4_ADDRESS_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_ipv4_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_ipv4, parameter_tvb, IPV4_ADDRESS_OFFSET, IPV4_ADDRESS_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%s)", ip_to_str((const guint8 *)tvb_get_ptr(parameter_tvb, IPV4_ADDRESS_OFFSET, IPV4_ADDRESS_LENGTH))); +} + +#define HOSTNAME_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_hostname_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + guint16 hostname_length; + + hostname_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; + proto_tree_add_item(parameter_tree, hf_hostname, parameter_tvb, HOSTNAME_OFFSET, hostname_length, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%.*s)", hostname_length, + (const char *)tvb_get_ptr(parameter_tvb, HOSTNAME_OFFSET, hostname_length)); +} + +#define IPV6_ADDRESS_LENGTH 16 +#define IPV6_ADDRESS_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_ipv6_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_ipv6, parameter_tvb, IPV6_ADDRESS_OFFSET, IPV6_ADDRESS_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%s)", ip6_to_str((const struct e_in6_addr *)tvb_get_ptr(parameter_tvb, IPV6_ADDRESS_OFFSET, IPV6_ADDRESS_LENGTH))); +} + +static void +dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + guint16 parameter_value_length; + + parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; + proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, "(tag %u and %u byte%s value)", tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET), parameter_value_length, plurality(parameter_value_length, "", "s")); +} + +static void +dissect_parameter(tvbuff_t *parameter_tvb, proto_tree *tree, tvbuff_t **data_tvb, guint8 *source_ssn, guint8 *dest_ssn) +{ + guint16 tag, length, padding_length; + proto_item *parameter_item; + proto_tree *parameter_tree; + guint8 ssn = INVALID_SSN; + + /* extract tag and length from the parameter */ + tag = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET); + length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET); + padding_length = tvb_length(parameter_tvb) - length; + + if (tree) { + /* create proto_tree stuff */ + parameter_item = proto_tree_add_text(tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), val_to_str(tag, parameter_tag_values, "Unknown parameter")); + parameter_tree = proto_item_add_subtree(parameter_item, ett_sua_parameter); + + /* add tag and length to the sua tree */ + proto_tree_add_item(parameter_tree, hf_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER); + } else { + parameter_tree = NULL; + parameter_item = NULL; + } +/* +** If no tree, only the data and ssn parameters in the source and destination +** address need to be dissected. This in order to make dissection of the data +** possible when there is no tree. +*/ + switch(tag) { + case DATA_PARAMETER_TAG: + dissect_data_parameter(parameter_tvb, parameter_tree, parameter_item, data_tvb); + break; + case INFO_STRING_PARAMETER_TAG: + if (parameter_tree) { + dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case ROUTING_CONTEXT_PARAMETER_TAG: + if (parameter_tree) { + dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case DIAGNOSTIC_INFO_PARAMETER_TAG: + if (parameter_tree) { + dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case HEARTBEAT_DATA_PARAMETER_TAG: + if (parameter_tree) { + dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case TRAFFIC_MODE_TYPE_PARAMETER_TAG: + if (parameter_tree) { + dissect_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case ERROR_CODE_PARAMETER_TAG: + if (parameter_tree) { + dissect_error_code_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case STATUS_PARAMETER_TAG: + if (parameter_tree) { + dissect_status_type_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case CONGESTION_LEVEL_PARAMETER_TAG: + if (parameter_tree) { + dissect_congestion_level_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case ASP_IDENTIFIER_PARAMETER_TAG: + if (parameter_tree) { + dissect_asp_identifier_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case AFFECTED_POINT_CODE_PARAMETER_TAG: + if (parameter_tree) { + dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case REGISTRATION_STATUS_PARAMETER_TAG: + if (parameter_tree) { + dissect_registration_status_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case DEREGISTRATION_STATUS_PARAMETER_TAG: + if (parameter_tree) { + dissect_deregistration_status_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG: + if (parameter_tree) { + dissect_local_routing_key_identifier_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case SS7_HOP_COUNTER_PARAMETER_TAG: + if (parameter_tree) { + dissect_ss7_hop_counter_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case SOURCE_ADDRESS_PARAMETER_TAG: + dissect_source_address_parameter(parameter_tvb, parameter_tree, source_ssn); + break; + case DESTINATION_ADDRESS_PARAMETER_TAG: + dissect_destination_address_parameter(parameter_tvb, parameter_tree, dest_ssn); + break; + case SOURCE_REFERENCE_NUMBER_PARAMETER_TAG: + if (parameter_tree) { + dissect_source_reference_number_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case DESTINATION_REFERENCE_NUMBER_PARAMETER_TAG: + if (parameter_tree) { + dissect_destination_reference_number_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case SCCP_CAUSE_PARAMETER_TAG: + if (parameter_tree) { + dissect_sccp_cause_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case SEQUENCE_NUMBER_PARAMETER_TAG: + if (parameter_tree) { + dissect_sequence_number_parameter(parameter_tvb, parameter_tree); + } + break; + case RECEIVE_SEQUENCE_NUMBER_PARAMETER_TAG: + if (parameter_tree) { + dissect_receive_sequence_number_parameter(parameter_tvb, parameter_tree); + } + break; + case ASP_CAPABILITIES_PARAMETER_TAG: + if (parameter_tree) { + dissect_asp_capabilities_parameter(parameter_tvb, parameter_tree); + } + break; + case CREDIT_PARAMETER_TAG: + if (parameter_tree) { + dissect_credit_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case USER_CAUSE_PARAMETER_TAG: + if (parameter_tree) { + dissect_user_cause_parameter(parameter_tvb, parameter_tree); + } + break; + case NETWORK_APPEARANCE_PARAMETER_TAG: + if (parameter_tree) { + dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case ROUTING_KEY_PARAMETER_TAG: + if (parameter_tree) { + dissect_routing_key_parameter(parameter_tvb, parameter_tree); + } + break; + case REGISTRATION_RESULT_PARAMETER_TAG: + if (parameter_tree) { + dissect_registration_result_parameter(parameter_tvb, parameter_tree); + } + break; + case DEREGISTRATION_RESULT_PARAMETER_TAG: + if (parameter_tree) { + dissect_deregistration_result_parameter(parameter_tvb, parameter_tree); + } + break; + case ADDRESS_RANGE_PARAMETER_TAG: + if (parameter_tree) { + dissect_address_range_parameter(parameter_tvb, parameter_tree); + } + break; + case CORRELATION_ID_PARAMETER_TAG: + if (parameter_tree) { + dissect_correlation_id_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case IMPORTANCE_PARAMETER_TAG: + if (parameter_tree) { + dissect_importance_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case MESSAGE_PRIORITY_PARAMETER_TAG: + if (parameter_tree) { + dissect_message_priority_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case PROTOCOL_CLASS_PARAMETER_TAG: + if (parameter_tree) { + dissect_protocol_class_parameter(parameter_tvb, parameter_tree); + } + break; + case SEQUENCE_CONTROL_PARAMETER_TAG: + if (parameter_tree) { + dissect_sequence_control_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case SEGMENTATION_PARAMETER_TAG: + if (parameter_tree) { + dissect_segmentation_parameter(parameter_tvb, parameter_tree); + } + break; + case SMI_PARAMETER_TAG: + if (parameter_tree) { + dissect_smi_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case TID_LABEL_PARAMETER_TAG: + if (parameter_tree) { + dissect_tid_label_parameter(parameter_tvb, parameter_tree); + } + break; + case DRN_LABEL_PARAMETER_TAG: + if (parameter_tree) { + dissect_drn_label_parameter(parameter_tvb, parameter_tree); + } + break; + case GLOBAL_TITLE_PARAMETER_TAG: + if (parameter_tree) { + dissect_global_title_parameter(parameter_tvb, parameter_tree); + } + break; + case POINT_CODE_PARAMETER_TAG: + if (parameter_tree) { + dissect_point_code_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case SUBSYSTEM_NUMBER_PARAMETER_TAG: + dissect_ssn_parameter(parameter_tvb, parameter_tree, parameter_item, &ssn); + if(source_ssn) + { + *source_ssn = ssn; + } + if(dest_ssn) + { + *dest_ssn = ssn; + } + break; + case IPV4_ADDRESS_PARAMETER_TAG: + if (parameter_tree) { + dissect_ipv4_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case HOSTNAME_PARAMETER_TAG: + if (parameter_tree) { + dissect_hostname_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + case IPV6_ADDRESS_PARAMETER_TAG: + if (parameter_tree) { + dissect_ipv6_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + default: + if (parameter_tree) { + dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item); + } + break; + }; + if (parameter_tree && (padding_length > 0)) + proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER); +} + +static void +dissect_parameters(tvbuff_t *parameters_tvb, proto_tree *tree, tvbuff_t **data_tvb, guint8 *source_ssn, guint8 *dest_ssn) +{ + gint offset, length, total_length, remaining_length; + tvbuff_t *parameter_tvb; + + offset = 0; + while((remaining_length = tvb_length_remaining(parameters_tvb, offset))) { + length = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET); + total_length = ADD_PADDING(length); + if (remaining_length >= length) + total_length = MIN(total_length, remaining_length); + /* create a tvb for the parameter including the padding bytes */ + parameter_tvb = tvb_new_subset(parameters_tvb, offset, total_length, total_length); + dissect_parameter(parameter_tvb, tree, data_tvb, source_ssn, dest_ssn); + /* get rid of the handled parameter */ + offset += total_length; + } +} + +static void +dissect_sua_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *sua_tree, proto_tree *tree) +{ + tvbuff_t *common_header_tvb; + tvbuff_t *parameters_tvb; + tvbuff_t *data_tvb = NULL; + guint8 source_ssn = INVALID_SSN; + guint8 dest_ssn = INVALID_SSN; + + common_header_tvb = tvb_new_subset(message_tvb, COMMON_HEADER_OFFSET, COMMON_HEADER_LENGTH, COMMON_HEADER_LENGTH); + dissect_common_header(common_header_tvb, pinfo, sua_tree); + + parameters_tvb = tvb_new_subset(message_tvb, COMMON_HEADER_LENGTH, -1, -1); + dissect_parameters(parameters_tvb, sua_tree, &data_tvb, &source_ssn, &dest_ssn); + + /* If there was SUA data it could be dissected */ + if(data_tvb) + { + /* Try subdissectors (if we found a valid SSN on the current message) */ + if ((dest_ssn == INVALID_SSN || + !dissector_try_port(sua_ssn_dissector_table, dest_ssn, data_tvb, pinfo, tree)) + && (source_ssn == INVALID_SSN || + !dissector_try_port(sua_ssn_dissector_table, source_ssn, data_tvb, pinfo, tree))) + { + /* No sub-dissection occured, treat it as raw data */ + call_dissector(data_handle, data_tvb, pinfo, sua_tree); + } + } +} + +static void +dissect_sua(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_item *sua_item; + proto_tree *sua_tree; + + /* make entry in the Protocol column on summary display */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "SUA"); + + /* Clear entries in Info column on summary display */ + if (check_col(pinfo->cinfo, COL_INFO)) + col_clear(pinfo->cinfo, COL_INFO); + + /* In the interest of speed, if "tree" is NULL, don't do any work not + necessary to generate protocol tree items. */ + if (tree) { + /* create the sua protocol tree */ + sua_item = proto_tree_add_item(tree, proto_sua, message_tvb, 0, -1, FALSE); + sua_tree = proto_item_add_subtree(sua_item, ett_sua); + } else { + sua_tree = NULL; + }; + + /* dissect the message */ + dissect_sua_message(message_tvb, pinfo, sua_tree, tree); +} + +/* Register the protocol with Ethereal */ +void +proto_register_sua(void) +{ + + /* Setup list of header fields */ + static hf_register_info hf[] = { + { &hf_version, { "Version", "sua.version", FT_UINT8, BASE_DEC, VALS(protocol_version_values), 0x0, "", HFILL } }, + { &hf_reserved, { "Reserved", "sua.reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_message_class, { "Message Class", "sua.message_class", FT_UINT8, BASE_DEC, VALS(message_class_values), 0x0, "", HFILL } }, + { &hf_message_type, { "Message Type", "sua.message_type", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_message_length, { "Message Length", "sua.message_length", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_parameter_tag, { "Parameter Tag", "sua.parameter_tag", FT_UINT16, BASE_HEX, VALS(parameter_tag_values), 0x0, "", HFILL } }, + { &hf_parameter_length, { "Parameter Length", "sua.parameter_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_parameter_value, { "Parameter Value", "sua.parameter_value", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_parameter_padding, { "Padding", "sua.parameter_padding", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_info_string, { "Info string", "sua.info_string", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_routing_context, { "Routing context", "sua.routing_context", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_diagnostic_information_info, { "Diagnostic Information", "sua.diagnostic_information", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_heartbeat_data, { "Heartbeat Data", "sua.heartbeat_data", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_traffic_mode_type, { "Traffic mode Type", "sua.traffic_mode_type", FT_UINT32, BASE_DEC, VALS(traffic_mode_type_values), 0x0, "", HFILL } }, + { &hf_error_code, { "Error code", "sua.error_code", FT_UINT32, BASE_DEC, VALS(error_code_values), 0x0, "", HFILL } }, + { &hf_status_type, { "Status type", "sua.status_type", FT_UINT16, BASE_DEC, VALS(status_type_values), 0x0, "", HFILL } }, + { &hf_status_info, { "Status info", "sua.status_info", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_congestion_level, { "Congestion Level", "sua.congestion_level", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_asp_identifier, { "ASP Identifier", "sua.asp_identifier", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_mask, { "Mask", "sua.affected_point_code_mask", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_dpc, { "Affected DPC", "sua.affected_pointcode_dpc", FT_UINT24, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_registration_status, { "Registration status", "sua.registration_status", FT_UINT32, BASE_DEC, VALS(registration_status_values), 0x0, "", HFILL } }, + { &hf_deregistration_status, { "Deregistration status", "sua.deregistration_status", FT_UINT32, BASE_DEC, VALS(deregistration_status_values), 0x0, "", HFILL } }, + { &hf_local_routing_key_identifier, { "Local routing key identifier", "sua.local_routing_key_identifier", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_source_address_routing_indicator, { "Routing Indicator", "sua.source_address_routing_indicator", FT_UINT16, BASE_DEC, VALS(routing_indicator_values), 0x0, "", HFILL } }, + { &hf_source_address_reserved_bits, { "Reserved Bits", "sua.source_address_reserved_bits", FT_UINT16, BASE_DEC, NULL, ADDRESS_RESERVED_BITMASK, "", HFILL } }, + { &hf_source_address_gt_bit, { "Include GT", "sua.source_address_gt_bit", FT_BOOLEAN, 16, NULL, ADDRESS_GT_BITMASK, "", HFILL } }, + { &hf_source_address_pc_bit, { "Include PC", "sua.source_address_pc_bit", FT_BOOLEAN, 16, NULL, ADDRESS_PC_BITMASK, "", HFILL } }, + { &hf_source_address_ssn_bit, { "Include SSN", "sua.source_address_ssn_bit", FT_BOOLEAN, 16, NULL, ADDRESS_SSN_BITMASK, "", HFILL } }, + { &hf_destination_address_routing_indicator, { "Routing Indicator", "sua.destination_address_routing_indicator", FT_UINT16, BASE_DEC, VALS(routing_indicator_values), 0x0, "", HFILL } }, + { &hf_destination_address_reserved_bits, { "Reserved Bits", "sua.destination_address_reserved_bits", FT_UINT16, BASE_DEC, NULL, ADDRESS_RESERVED_BITMASK, "", HFILL } }, + { &hf_destination_address_gt_bit, { "Include GT", "sua.destination_address_gt_bit", FT_BOOLEAN, 16, NULL, ADDRESS_GT_BITMASK, "", HFILL } }, + { &hf_destination_address_pc_bit, { "Include PC", "sua.destination_address_pc_bit", FT_BOOLEAN, 16, NULL, ADDRESS_PC_BITMASK, "", HFILL } }, + { &hf_destination_address_ssn_bit, { "Include SSN", "sua.destination_address_ssn_bit", FT_BOOLEAN, 16, NULL, ADDRESS_SSN_BITMASK, "", HFILL } }, + { &hf_ss7_hop_counter_counter, { "SS7 Hop Counter", "sua.ss7_hop_counter_counter", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_ss7_hop_counter_reserved, { "Reserved", "sua.ss7_hop_counter_reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_destination_reference_number, { "Destination Reference Number", "sua.destination_reference_number", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_source_reference_number, { "Source Reference Number", "sua.source_reference_number", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_cause_reserved, { "Reserved", "sua.sccp_cause_reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_cause_type, { "Cause Type", "sua.sccp_cause_type", FT_UINT8, BASE_HEX, VALS(cause_type_values), 0x0, "", HFILL } }, + { &hf_cause_value, { "Cause Value", "sua.sccp_cause_value", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_sequence_number_reserved, { "Reserved", "sua.sequence_number_reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_sequence_number_rec_number, { "Receive Sequence Number P(R)", "sua.sequence_number_receive_sequence_number", FT_UINT8, BASE_DEC, NULL, SEQ_NUM_MASK, "", HFILL } }, + { &hf_sequence_number_more_data_bit, { "More Data Bit", "sua.sequence_number_more_data_bit", FT_BOOLEAN, 8, TFS(&more_data_bit_value), MORE_DATA_BIT_MASK, "", HFILL } }, + { &hf_sequence_number_sent_number, { "Sent Sequence Number P(S)", "sua.sequence_number_sent_sequence_number", FT_UINT8, BASE_DEC, NULL, SEQ_NUM_MASK, "", HFILL } }, + { &hf_sequence_number_spare_bit, { "Spare Bit", "sua.sequence_number_spare_bit", FT_BOOLEAN, 8, NULL, SPARE_BIT_MASK, "", HFILL } }, + { &hf_receive_sequence_number_reserved, { "Reserved", "sua.receive_sequence_number_reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_receive_sequence_number_number, { "Receive Sequence Number P(R)", "sua.receive_sequence_number_number", FT_UINT8, BASE_DEC, NULL, SEQ_NUM_MASK, "", HFILL } }, + { &hf_receive_sequence_number_spare_bit, { "Spare Bit", "sua.receive_sequence_number_spare_bit", FT_BOOLEAN, 8, NULL, SPARE_BIT_MASK, "", HFILL } }, + { &hf_asp_capabilities_reserved, { "Reserved", "sua.asp_capabilities_reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_asp_capabilities_reserved_bits, { "Reserved Bits", "sua.asp_capabilities_reserved_bits", FT_UINT8, BASE_HEX, NULL, RESERVED_BITS_MASK, "", HFILL } }, + { &hf_asp_capabilities_a_bit, { "Protocol Class 3", "sua.asp_capabilities_a_bit", FT_BOOLEAN, 8, TFS(&sua_supported_bit_value), A_BIT_MASK, "", HFILL } }, + { &hf_asp_capabilities_b_bit, { "Protocol Class 2", "sua.asp_capabilities_b_bit", FT_BOOLEAN, 8, TFS(&sua_supported_bit_value), B_BIT_MASK, "", HFILL } }, + { &hf_asp_capabilities_c_bit, { "Protocol Class 1", "sua.asp_capabilities_c_bit", FT_BOOLEAN, 8, TFS(&sua_supported_bit_value), C_BIT_MASK, "", HFILL } }, + { &hf_asp_capabilities_d_bit, { "Protocol Class 0", "sua.asp_capabilities_d_bit", FT_BOOLEAN, 8, TFS(&sua_supported_bit_value), D_BIT_MASK, "", HFILL } }, + { &hf_asp_capabilities_interworking, { "Interworking", "sua.asp_capabilities_interworking", FT_UINT8, BASE_HEX, VALS(interworking_values), 0x0, "", HFILL } }, + { &hf_credit, { "Credit", "sua.credit", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_cause, { "Cause", "sua.cause_user_cause", FT_UINT16, BASE_DEC, VALS(cause_values), 0x0, "", HFILL } }, + { &hf_user, { "User", "sua.cause_user_user", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_data, { "Data", "sua.data", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_network_appearance, { "Network Appearance", "sua.network_appearance", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_routing_key_identifier, { "Local Routing Key Identifier", "sua.routing_key_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_correlation_id, { "Correlation ID", "sua.correlation_id", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_importance_reserved, { "Reserved", "sua.importance_reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_importance, { "Importance", "sua.importance_inportance", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_message_priority_reserved, { "Reserved", "sua.message_priority_reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_message_priority, { "Message Priority", "sua.message_priority_priority", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_protocol_class_reserved, { "Reserved", "sua.protcol_class_reserved", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_return_on_error_bit, { "Return On Error Bit", "sua.protocol_class_return_on_error_bit", FT_BOOLEAN, 8, TFS(&return_on_error_bit_value), RETURN_ON_ERROR_BIT_MASK, "", HFILL } }, + { &hf_protocol_class, { "Protocol Class", "sua.protocol_class_class", FT_UINT8, BASE_DEC, NULL, PROTOCOL_CLASS_MASK, "", HFILL } }, + { &hf_sequence_control, { "Sequence Control", "sua.sequence_control_sequence_control", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_first_bit, { "First Segment Bit", "sua.segmentation_first_bit", FT_BOOLEAN, 8, TFS(&first_bit_value), FIRST_BIT_MASK, "", HFILL } }, + { &hf_number_of_remaining_segments, { "Number of Remaining Segments", "sua.segmentation_number_of_remaining_segments", FT_UINT8, BASE_DEC, NULL, NUMBER_OF_SEGMENTS_MASK, "", HFILL } }, + { &hf_segmentation_reference, { "Segmentation Reference", "sua.segmentation_reference", FT_UINT24, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_smi_reserved, { "Reserved", "sua.smi_reserved", FT_BYTES, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_smi, { "SMI", "sua.smi_smi", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_tid_label_start, { "Start", "sua.tid_label_start", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_tid_label_end, { "End", "sua.tid_label_end", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_tid_label_value, { "Label Value", "sua.tid_label_value", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_drn_label_start, { "Start", "sua.drn_label_start", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_drn_label_end, { "End", "sua.drn_label_end", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_drn_label_value, { "Label Value", "sua.drn_label_value", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_gt_reserved, { "Reserved", "sua.gt_reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_gti, { "GTI", "sua.gti", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_number_of_digits, { "Number of Digits", "sua.global_title_number_of_digits", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_translation_type, { "Translation Type", "sua.global_title_translation_type", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_numbering_plan, { "Numbering Plan", "sua.global_title_numbering_plan", FT_UINT8, BASE_HEX, VALS(numbering_plan_values), 0x0, "", HFILL } }, + { &hf_nature_of_address, { "Nature of Address", "sua.global_title_nature_of_address", FT_UINT8, BASE_HEX, VALS(nature_of_address_values), 0x0, "", HFILL } }, + { &hf_global_title, { "Global Title", "sua.global_title_signals", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_point_code_dpc, { "Point Code", "sua.point_code", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_ssn_reserved, { "Reserved", "sua.ssn_reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_ssn_number, { "Subsystem Number", "sua.ssn", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_ipv4, { "IP Version 4 address", "sua.ipv4_address", FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_hostname, { "Hostname", "sua.hostname.name", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_ipv6, { "IP Version 6 address", "sua.ipv6_address", FT_IPv6, BASE_NONE, NULL, 0x0, "", HFILL } }, + }; + + /* Setup protocol subtree array */ + static gint *ett[] = { + &ett_sua, + &ett_sua_parameter, + &ett_sua_source_address_indicator, + &ett_sua_destination_address_indicator, + &ett_sua_affected_destination, + &ett_sua_sequence_number_rec_number, + &ett_sua_sequence_number_sent_number, + &ett_sua_receive_sequence_number_number, + &ett_sua_protcol_classes, + &ett_sua_first_remaining, + &ett_sua_return_on_error_bit_and_protocol_class + }; + module_t *sua_module; + + /* Register the protocol name and description */ + proto_sua = proto_register_protocol("SS7 SCCP-User Adaptation Layer", "SUA", "sua"); + + /* Required function calls to register the header fields and subtrees used */ + proto_register_field_array(proto_sua, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + sua_module = prefs_register_protocol(proto_sua, NULL); + prefs_register_obsolete_preference(sua_module, "sua_version"); + + sua_ssn_dissector_table = register_dissector_table("sua.ssn", "SUA SSN", FT_UINT8, BASE_DEC); +} + +void +proto_reg_handoff_sua(void) +{ + dissector_handle_t sua_handle; + + sua_handle = create_dissector_handle(dissect_sua, proto_sua); + dissector_add("sctp.ppi", SUA_PAYLOAD_PROTOCOL_ID, sua_handle); + dissector_add("sctp.port", SCTP_PORT_SUA, sua_handle); + + data_handle = find_dissector("data"); +} |