/* packet-mpeg-dsmcc.c

 *

 * Routines for ISO/IEC 13818-6 DSM-CC

 * Copyright 2012, Weston Schmidt <weston_schmidt@alumni.purdue.edu>

 * Copyright 2019, Anthony Crawford <anthony.r.crawford@charter.com>

 *

 * Wireshark - Network traffic analyzer

 * By Gerald Combs <gerald@wireshark.org>

 * Copyright 1998 Gerald Combs

 *

 * SPDX-License-Identifier: GPL-2.0-or-later

 */

#include "config.h"

#include <epan/packet.h>

#include <epan/prefs.h>

#include <epan/expert.h>

#include <epan/crc32-tvb.h>

#include "packet-mpeg-sect.h"

void proto_register_dsmcc(void);

void proto_reg_handoff_dsmcc(void);

static dissector_handle_t dsmcc_ts_handle, dsmcc_tcp_handle, dsmcc_udp_handle;

/* NOTE: Please try to keep this status comment up to date until the spec is

 * completely implemented - there are a large number of tables in the spec.

 *

 * 13818-6 Table status:

 *

 * Missing tables:

 * 3-1 3-2 3-3 3-4 3-6 3-7 3-8 3-9

 * 4-61, 4-81, 4-82, 4-87, 4-88

 * 5-*

 * 6-4

 * 7-5 7-8 7-10 7-12

 * 8-2 8-3 8-4 8-6

 * 9-5 9-6

 * 10-*

 * 11-*

 * 12-*

 *

 * Dissected tables:

 * 2-1 2-4 2-6 2-7

 * 4-x

 * 6-1

 * 7-6 7-7

 * 9-2

 * J.3

 *

 * Validated (all parameters are checked) U-N Messages:

 * 0x4010, 0x4011, 0x4020, 0x4021, 0x4022, 0x4023, 0x40b0

 * 0x8012, 0x8013, 0x8022, 0x8023, 0x8030, 0x8031, 0x8060, 0x8061, 0x80b0

 * Unvalidated U-N messages:

 * 4032, 4033, 4042, 4043, 4060, 4061, 4062, 4063,

 * 4070, 4071, 4072, 4073, 4082, 4090, 40a2, 40a3

 * 8041, 8042, 8050, 8051, 8062, 8063, 8070, 8071,

 * 8072, 8073, 8082, 8092, 80a0, 80a1, 80a2, 80a3

 *

 */

static int proto_dsmcc;

static bool dsmcc_sect_check_crc;

/* NOTE: Please add values numerically according to 13818-6 so it is easier to

 * keep track of what parameters/tables are associated with each other.

 */

/* table 2-1 dsmccMessageHeader - start */

static int hf_dsmcc_protocol_discriminator;

static int hf_dsmcc_type;

static int hf_dsmcc_message_id;

static int hf_dsmcc_transaction_id;

static int hf_dsmcc_header_reserved;

static int hf_dsmcc_adaptation_length;

static int hf_dsmcc_message_length;

/* table 2-1 dsmccMessageHeader - end */

/* table 2-3 transactionId - start */

static int hf_dsmcc_un_sess_flag_transaction_id_originator;

static int hf_dsmcc_un_sess_flag_transaction_id_number;

/* table 2-3 transactionId - end */

/* table 2-4 dsmccAdaptationHeader - start */

static int hf_dsmcc_adaptation_type;

/* table 2-4 dsmccAdaptationHeader - end */

/* table 2-6 dsmccConditionalAccess - start */

static int hf_dsmcc_adaptation_ca_reserved;

static int hf_dsmcc_adaptation_ca_system_id;

static int hf_dsmcc_adaptation_ca_length;

/* table 2-6 dsmccConditionalAccess - end */

/* table 2-7 dsmccUserId - start */

static int hf_dsmcc_adaptation_user_id_reserved;

/* table 2-7 dsmccUserId - end */

/* table 4-2, 4-3, 4-4 U-N messageDiscriminator - start */

/*static int hf_dsmcc_un_sess_message_discriminator;*/

static int hf_dsmcc_un_sess_flag_message_discriminator;

static int hf_dsmcc_un_sess_flag_message_scenario;

static int hf_dsmcc_un_sess_flag_message_type;

/* table 4-2, 4-3, 4-4 U-N messageDiscriminator - end */

/* other tables in section 4.2 - start */

static int hf_dsmcc_un_sess_response;

static int hf_dsmcc_un_sess_reason;

static int hf_dsmcc_un_sess_reserved;

/* other tables in section 4.2 - end */

/* table 4-6 U-N user data format - start */

static int hf_dsmcc_un_sess_uu_data_len;

static int hf_dsmcc_un_sess_uu_data;

static int hf_dsmcc_un_sess_priv_data_len;

static int hf_dsmcc_un_sess_priv_data;

/* table 4-6 U-N user data format - end */

/* table 4-7 U-N Resources - start */

static int hf_dsmcc_un_sess_rsrc_desc_count;

/* table 4-7 U-N Resources - end */

/* table 4-10 U-N Server Session Setup Indication - start */

static int hf_dsmcc_un_sess_forward_count;

/* table 4-10 U-N Server Session Setup Indication - end */

/* 4-26 Server Delete Resource Request - start */

static int hf_dsmcc_un_sess_resource_count;

static int hf_dsmcc_un_sess_resource_num;

/* 4-26 Server Delete Resource Request - end */

/* table 4-30, 4-31, 4-32, 4-33, 4-34, 4-35, 4-36 - start */

static int hf_dsmcc_un_sess_status_type;

static int hf_dsmcc_un_sess_status_count;

static int hf_dsmcc_un_sess_status_byte;

/* table 4-30, 4-31, 4-32, 4-33, 4-34, 4-35, 4-36 - end */

/* table 4-56 Client Session In Progress - start */

static int hf_dsmcc_un_sess_session_count;

/* table 4-56 Client Session In Progress - end */

/* table 4-58 Message Fields data types - start */

static int hf_dsmcc_un_sess_session_id_device_id;

static int hf_dsmcc_un_sess_session_id_session_number;

/* table 4-58 Message Fields data types - end */

/* table 4-63 U-N common descriptor header - start */

static int hf_dsmcc_un_sess_rsrc_request_id;

static int hf_dsmcc_un_sess_rsrc_descriptor_type;

static int hf_dsmcc_un_sess_rsrc_number;

static int hf_dsmcc_un_sess_rsrc_association_tag;

static int hf_dsmcc_un_sess_rsrc_flags;

static int hf_dsmcc_un_sess_rsrc_status;

static int hf_dsmcc_un_sess_rsrc_desc_data_fields_length;

static int hf_dsmcc_un_sess_rsrc_data_field_count;

static int hf_dsmcc_un_sess_rsrc_type_owner_id;

static int hf_dsmcc_un_sess_rsrc_type_owner_value;

/* table 4-63 U-N common descriptor header - end */

/* table 4-64 U-N resource number assignor - start */

static int hf_dsmcc_un_sess_rsrc_flag_num_assignor;

static int hf_dsmcc_un_sess_rsrc_flag_num_value;

/* table 4-64 U-N resource number assignor - end */

/* table 4-65 U-N resource association tag assignor - start */

static int hf_dsmcc_un_sess_rsrc_flag_association_tag_assignor;

static int hf_dsmcc_un_sess_rsrc_flag_association_tag_value;

/* table 4-65 U-N resource association tag assignor - end */

/* table 4-66 U-N resource allocator - start */

static int hf_dsmcc_un_sess_rsrc_flag_allocator;

/* table 4-66 U-N resource allocator - end */

/* table 4-67 U-N resource attribute - start */

static int hf_dsmcc_un_sess_rsrc_flag_attribute;

/* table 4-67 U-N resource attribute - end */

/* table 4-68 U-N resource view - start */

static int hf_dsmcc_un_sess_rsrc_flag_view;

/* table 4-68 U-N resource view - end */

/* table 4-71 U-N dsmccResourceDescriptorValue() format - start */

static int hf_dsmcc_un_sess_rsrc_value_type;

static int hf_dsmcc_un_sess_rsrc_value_count;

static int hf_dsmcc_un_sess_rsrc_value_data;

static int hf_dsmcc_un_sess_rsrc_most_desired;

static int hf_dsmcc_un_sess_rsrc_least_desired;

/* table 4-71 U-N dsmccResourceDescriptorValue() format - end */

/* table 4-74 U-N Continuous Feed Session resource descriptor - start */

static int hf_dsmcc_un_sess_rsrc_cfs_num_count;

static int hf_dsmcc_un_sess_rsrc_cfs_num;

/* table 4-74 U-N Continuous Feed Session resource descriptor - end  */

/* table 4-75 U-N ATM Connection resource descriptor - start */

static int hf_dsmcc_un_sess_rsrc_atm_vpi;

static int hf_dsmcc_un_sess_rsrc_atm_vci;

/* table 4-75 U-N ATM Connection resource descriptor - end  */

/* table 4-76 MPEG Program - start */

static int hf_dsmcc_un_sess_rsrc_mpeg_ca_pid;

static int hf_dsmcc_un_sess_rsrc_mpeg_elem_stream_count;

/* table 4-76 MPEG Program - end */

/* table 4-77 Physical Channel - start */

static int hf_dsmcc_un_sess_rsrc_phys_chan_direction;

/* table 4-77 Physical Channel - end */

/* table 4-84 IP - start */

static int hf_dsmcc_un_sess_rsrc_src_ip_addr;

static int hf_dsmcc_un_sess_rsrc_src_ip_port;

static int hf_dsmcc_un_sess_rsrc_dst_ip_addr;

static int hf_dsmcc_un_sess_rsrc_dst_ip_port;

static int hf_dsmcc_un_sess_rsrc_ip_protocol;

/* table 4-84 IP - end */

/* table 4-86 PSTN Setup - start */

static int hf_dsmcc_un_sess_rsrc_pstn_calling_id;

static int hf_dsmcc_un_sess_rsrc_pstn_called_id;

/* table 4-86 PSTN Setup - end */

/* Table 4-89 Q.922 Connection - start */

static int hf_dsmcc_un_sess_rsrc_dlci_count;

static int hf_dsmcc_un_sess_rsrc_dlci;

static int hf_dsmcc_un_sess_rsrc_dl_association_tag;

/* Table 4-89 Q.922 Connection - end */

/* table 4-90 Shared Resource - start */

static int hf_dsmcc_un_sess_rsrc_shared_resource_num;

/* table 4-90 Shared Resource - end */

/* table 4-91 Shared Request ID - start */

static int hf_dsmcc_un_sess_rsrc_shared_resource_request_id;

/* table 4-91 Shared Request ID - end */

/* table 4-92 Headend List - start */

static int hf_dsmcc_un_sess_rsrc_headend_count;

static int hf_dsmcc_un_sess_rsrc_headend_code;

/* table 4-92 Headend List - end */

/* table 4-94 SDB Continuous Feed - start */

static int hf_dsmcc_un_sess_rsrc_sdb_id;

static int hf_dsmcc_un_sess_rsrc_sdb_program_count;

static int hf_dsmcc_un_sess_rsrc_sdb_association_tag;

static int hf_dsmcc_un_sess_rsrc_sdb_broadcast_program_id;

/* table 4-94 SDB Continuous Feed - end */

/* table 4-95 SDB Associations - start */

static int hf_dsmcc_un_sess_rsrc_sdb_control_association_tag;

static int hf_dsmcc_un_sess_rsrc_sdb_program_association_tag;

/* table 4-95 SDB Associations - end */

/* table 4-96 SDB Entitlement - start */

static int hf_dsmcc_un_sess_rsrc_sdb_exclude_count;

static int hf_dsmcc_un_sess_rsrc_sdb_include_count;

/* table 4-96 SDB Entitlement - end */

/* user defined 0xf001-0xf007 - start */

/* Time Warner Cable Pegasus Session Setup Protocol

* Version 2.3, May 19 2003

* These user defined resource descriptors have been implemented in

* VOD BackOffice products by Time Warner, Arris and Ericsson. */

static int hf_dsmcc_un_sess_rsrc_trans_system;

static int hf_dsmcc_un_sess_rsrc_inner_coding;

static int hf_dsmcc_un_sess_rsrc_split_bitstream;

static int hf_dsmcc_un_sess_rsrc_mod_format;

static int hf_dsmcc_un_sess_rsrc_symbol_rate;

static int hf_dsmcc_un_sess_rsrc_reserved;

static int hf_dsmcc_un_sess_rsrc_interleave_depth;

static int hf_dsmcc_un_sess_rsrc_modulation_mode;

static int hf_dsmcc_un_sess_rsrc_fec;

static int hf_dsmcc_un_sess_rsrc_headend_flag;

static int hf_dsmcc_un_sess_rsrc_headend_tsid;

static int hf_dsmcc_un_sess_rsrc_server_ca_copyprotect;

static int hf_dsmcc_un_sess_rsrc_server_ca_usercount;

static int hf_dsmcc_un_sess_rsrc_client_ca_info_length;

static int hf_dsmcc_un_sess_rsrc_client_ca_info_data;

static int hf_dsmcc_un_sess_rsrc_service_group;

/* user defined 0xf001-0xf007 - end */

/* table 6-1 compatibilityDescriptor - start */

static int hf_compat_desc_length;

static int hf_compat_desc_count;

static int hf_desc_type;

static int hf_desc_length;

static int hf_desc_spec_type;

static int hf_desc_spec_data;

static int hf_desc_model;

static int hf_desc_version;

static int hf_desc_sub_desc_count;

static int hf_desc_sub_desc_type;

static int hf_desc_sub_desc_len;

/* table 6-1 compatibilityDescriptor - end */

/* table 7-3 dsmccDownloadDataHeader - start */

static int hf_dsmcc_dd_download_id;

static int hf_dsmcc_dd_message_id;

/* table 7-3 dsmccDownloadDataHeader - end */

/* table 7-6 dsmccDownloadInfoIndication/InfoResponse - start */

static int hf_dsmcc_dii_download_id;

static int hf_dsmcc_dii_block_size;

static int hf_dsmcc_dii_window_size;

static int hf_dsmcc_dii_ack_period;

static int hf_dsmcc_dii_t_c_download_window;

static int hf_dsmcc_dii_t_c_download_scenario;

static int hf_dsmcc_dii_number_of_modules;

static int hf_dsmcc_dii_module_id;

static int hf_dsmcc_dii_module_size;

static int hf_dsmcc_dii_module_version;

static int hf_dsmcc_dii_module_info_length;

static int hf_dsmcc_dii_private_data_length;

/* table 7-6 dsmccDownloadInfoIndication/InfoResponse - end */

/* table 7-7 dsmccDownloadDataBlock - start */

static int hf_dsmcc_ddb_module_id;

static int hf_dsmcc_ddb_version;

static int hf_dsmcc_ddb_reserved;

static int hf_dsmcc_ddb_block_number;

/* table 7-7 dsmccDownloadDataBlock - end */

/* table 9-2 dsmccSection - start */

static int hf_dsmcc_table_id;

static int hf_dsmcc_section_syntax_indicator;

static int hf_dsmcc_private_indicator;

static int hf_dsmcc_reserved;

static int hf_dsmcc_section_length;

static int hf_dsmcc_table_id_extension;

static int hf_dsmcc_reserved2;

static int hf_dsmcc_version_number;

static int hf_dsmcc_current_next_indicator;

static int hf_dsmcc_section_number;

static int hf_dsmcc_last_section_number;

static int hf_dsmcc_crc;

static int hf_dsmcc_checksum;

/* table 9-2 dsmccSection - end */

/* table J.3 E-164 NSAP - start */

static int hf_dsmcc_un_sess_nsap_afi;

static int hf_dsmcc_un_sess_nsap_idi;

static int hf_dsmcc_un_sess_nsap_ho_dsp;

static int hf_dsmcc_un_sess_nsap_esi;

static int hf_dsmcc_un_sess_nsap_sel;

/* table J.3 E-164 NSAP - end */

/* TODO: this should really live in the ETV dissector, but I'm not sure how

 * to make the functionality work exactly right yet.  Will work on a patch

 * for this next.

 */

static int hf_etv_module_abs_path;

static int hf_etv_dii_authority;

static int ett_dsmcc;

static int ett_dsmcc_payload;

static int ett_dsmcc_header;

static int ett_dsmcc_adaptation_header;

static int ett_dsmcc_message_id;

static int ett_dsmcc_transaction_id;

static int ett_dsmcc_heading;

static int ett_dsmcc_rsrc_number;

static int ett_dsmcc_rsrc_association_tag;

static int ett_dsmcc_rsrc_flags;

static int ett_dsmcc_compat;

static int ett_dsmcc_compat_sub_desc;

static int ett_dsmcc_dii_module;

static expert_field ei_dsmcc_invalid_value;

static expert_field ei_dsmcc_crc_invalid;

#define DSMCC_TCP_PORT          13819

#define DSMCC_UDP_PORT          13819

/* DSM-CC protocol discriminator, (table 2-1) */

#define DSMCC_PROT_DISC         0x11

#define DSMCC_SSI_MASK          0x8000

#define DSMCC_PRIVATE_MASK      0x4000

#define DSMCC_RESERVED_MASK              0x3000

#define DSMCC_LENGTH_MASK                0x0fff

#define DSMCC_RESERVED2_MASK               0xc0

#define DSMCC_VERSION_NUMBER_MASK          0x3e

#define DSMCC_CURRENT_NEXT_INDICATOR_MASK  0x01

/* DSM-CC U-N Session Flags */

#define DMSCC_FLAG_MESS_DISCRIMINATOR        0xc000

#define DMSCC_FLAG_MESS_SCENARIO             0x3ff0

#define DMSCC_FLAG_MESS_TYPE                 0x000f

#define DMSCC_FLAG_TRAN_ORIG             0xc0000000

#define DMSCC_FLAG_TRAN_NUM              0x3fffffff

#define DMSCC_FLAG_RSRC_NUM_ASSIGNOR         0xc000

#define DMSCC_FLAG_RSRC_NUM_VALUE            0x3fff

#define DMSCC_FLAG_RSRC_ASSOC_TAG_ASSIGNOR   0xc000

#define DMSCC_FLAG_RSRC_ASSOC_TAG_VALUE      0x3fff

#define DMSCC_FLAG_RSRC_VIEW                   0xc0

#define DMSCC_FLAG_RSRC_ATTRIBUTE              0x3c

#define DMSCC_FLAG_RSRC_ALLOCATOR              0x03

/* DSM-CC protocol U-N messages, (table 4-5) */

/* 4-5 U-N Session Client Messages */

#define DSMCC_UN_SESS_CLN_SESS_SET_REQ       0x4010

#define DSMCC_UN_SESS_CLN_SESS_SET_CNF       0x4011

#define DSMCC_UN_SESS_CLN_SESS_REL_REQ       0x4020

#define DSMCC_UN_SESS_CLN_SESS_REL_CNF       0x4021

#define DSMCC_UN_SESS_CLN_SESS_REL_IND       0x4022

#define DSMCC_UN_SESS_CLN_SESS_REL_RES       0x4023

#define DSMCC_UN_SESS_CLN_ADD_RSRC_IND       0x4032

#define DSMCC_UN_SESS_CLN_ADD_RSRC_RES       0x4033

#define DSMCC_UN_SESS_CLN_DEL_RSRC_IND       0x4042

#define DSMCC_UN_SESS_CLN_DEL_RSRC_RES       0x4043

#define DSMCC_UN_SESS_CLN_STATUS_REQ         0x4060

#define DSMCC_UN_SESS_CLN_STATUS_CNF         0x4061

#define DSMCC_UN_SESS_CLN_STATUS_IND         0x4062

#define DSMCC_UN_SESS_CLN_STATUS_RES         0x4063

#define DSMCC_UN_SESS_CLN_RESET_REQ          0x4070

#define DSMCC_UN_SESS_CLN_RESET_CNF          0x4071

#define DSMCC_UN_SESS_CLN_RESET_IND          0x4072

#define DSMCC_UN_SESS_CLN_RESET_RES          0x4073

#define DSMCC_UN_SESS_CLN_SESS_PROC_IND      0x4082

#define DSMCC_UN_SESS_CLN_CONN_REQ           0x4090

#define DSMCC_UN_SESS_CLN_SESS_TRN_IND       0x40a2

#define DSMCC_UN_SESS_CLN_SESS_TRN_RES       0x40a3

#define DSMCC_UN_SESS_CLN_SESS_INP_REQ       0x40b0

/* 4-5 U-N Session Server Messages */

#define DSMCC_UN_SESS_SRV_SESS_SET_IND       0x8012

#define DSMCC_UN_SESS_SRV_SESS_SET_RES       0x8013

#define DSMCC_UN_SESS_SRV_SESS_REL_REQ       0x8020

#define DSMCC_UN_SESS_SRV_SESS_REL_CNF       0x8021

#define DSMCC_UN_SESS_SRV_SESS_REL_IND       0x8022

#define DSMCC_UN_SESS_SRV_SESS_REL_RES       0x8023

#define DSMCC_UN_SESS_SRV_ADD_RSRC_REQ       0x8030

#define DSMCC_UN_SESS_SRV_ADD_RSRC_CNF       0x8031

#define DSMCC_UN_SESS_SRV_DEL_RSRC_REQ       0x8040

#define DSMCC_UN_SESS_SRV_DEL_RSRC_CNF       0x8041

#define DSMCC_UN_SESS_SRV_CONT_FEED_SESS_REQ 0x8050

#define DSMCC_UN_SESS_SRV_CONT_FEED_SESS_CNF 0x8051

#define DSMCC_UN_SESS_SRV_STATUS_REQ         0x8060

#define DSMCC_UN_SESS_SRV_STATUS_CNF         0x8061

#define DSMCC_UN_SESS_SRV_STATUS_IND         0x8062

#define DSMCC_UN_SESS_SRV_STATUS_RES         0x8063

#define DSMCC_UN_SESS_SRV_RESET_REQ          0x8070

#define DSMCC_UN_SESS_SRV_RESET_CNF          0x8071

#define DSMCC_UN_SESS_SRV_RESET_IND          0x8072

#define DSMCC_UN_SESS_SRV_RESET_RES          0x8073

#define DSMCC_UN_SESS_SRV_SESS_PROC_IND      0x8082

#define DSMCC_UN_SESS_SRV_CONN_IND           0x8092

#define DSMCC_UN_SESS_SRV_SESS_TRN_REQ       0x80a0

#define DSMCC_UN_SESS_SRV_SESS_TRN_CNF       0x80a1

#define DSMCC_UN_SESS_SRV_SESS_TRN_IND       0x80a2

#define DSMCC_UN_SESS_SRV_SESS_TRN_RES       0x80a3

#define DSMCC_UN_SESS_SRV_SESS_INP_REQ       0x80b0

/* 4-73 U-N Session Resource Descriptors */

#define RSRC_CONT_FEED_SESS     0x0001

#define RSRC_ATM_CONN           0x0002

#define RSRC_MPEG_PROG          0x0003

#define RSRC_PHYS_CHAN          0x0004

#define RSRC_TS_US_BW           0x0005

#define RSRC_TS_DS_BW           0x0006

#define RSRC_ATM_SVC_CONN       0x0007

#define RSRC_CONN_NTFY          0x0008

#define RSRC_IP                 0x0009

#define RSRC_CLN_TDMA_ASSIGN    0x000a

#define RSRC_PSTN_SETUP         0x000b

#define RSRC_NISDN_SETUP        0x000c

#define RSRC_NISDN_CONN         0x000d

#define RSRC_Q922_CONN          0x000e

#define RSRC_HEADEND_LIST       0x000f

#define RSRC_ATM_VC_CONN        0x0010

#define RSRC_SDB_CONT_FEED      0x0011

#define RSRC_SDB_ASSOC          0x0012

#define RSRC_SDB_ENT            0x0013

#define RSRC_SHARED_RSRC        0x7ffe

#define RSRC_SHARED_REQ_ID      0x7fff

#define RSRC_TYPE_OWNER         0xffff

/* U-N Session User Defined Resource Descriptors */

#define RSRC_MODULATION_MODE    0xf001

#define RSRC_HEADEND_ID         0xf003

#define RSRC_SERVER_CA          0xf004

#define RSRC_CLIENT_CA          0xf005

#define RSRC_ETHERNET           0xf006

#define RSRC_SERVICE_GROUP      0xf007

/* 2-2 */

static const range_string dsmcc_header_type_vals[] = {

    {    0,    0, "ISO/IEC 13818-6 Reserved" },

    { 0x01, 0x01, "ISO/IEC 13818-6 User-to-Network Configuration Message" },

    { 0x02, 0x02, "ISO/IEC 13818-6 User-to-Network Session Message" },

    { 0x03, 0x03, "ISO/IEC 13818-6 Download Message" },

    { 0x04, 0x04, "ISO/IEC 13818-6 SDB Channel Change Protocol Message" },

    { 0x05, 0x05, "ISO/IEC 13818-6 User-to-Network Pass-Thru Message" },

    { 0x06, 0x7f, "ISO/IEC 13818-6 Reserved" },

    { 0x80, 0xff, "User Defined Message Type" },

    {    0,    0, NULL }

};

/* 2-3 */

static const range_string dsmcc_un_sess_transaction_id_originator_vals[] = {

    {    0,    0, "Assigned by Client" },

    { 0x01, 0x01, "Assigned by Server" },

    { 0x02, 0x02, "Assigned by Network" },

    { 0x03, 0x03, "ISO/IEC 13818-6 Reserved" },

    { 0x04, 0xff, "Invalid"},

    {    0,    0, NULL }

};

/* 2-5 */

static const range_string dsmcc_adaptation_header_vals[] = {

    {    0,    0, "ISO/IEC 13818-6 Reserved" },

    { 0x01, 0x01, "DSM-CC Conditional Access Adaptation Format" },

    { 0x02, 0x02, "DSM-CC User ID Adaptation Format" },

    { 0x03, 0x7f, "ISO/IEC 13818-6 Reserved" },

    { 0x80, 0xff, "User Defined Adaptation Type" },

    {    0,    0, NULL }

};

/* 4-2 */

static const range_string dsmcc_un_sess_message_discriminator_vals[] = {

    {    0,    0, "ISO/IEC 13818-6 Reserved" },

    { 0x01, 0x01, "Client and Network" },

    { 0x02, 0x02, "Server and Network" },

    { 0x03, 0x0f, "ISO/IEC 13818-6 Reserved" },

    { 0x10, 0xff, "Invalid"},

    {    0,    0, NULL }

};

/* 4-3 */

static const range_string dsmcc_un_sess_message_scenario_vals[] = {

    {      0,      0, "ISO/IEC 13818-6 Reserved" },

    { 0x0001, 0x0001, "Session Setup" },

    { 0x0002, 0x0002, "Session Release" },

    { 0x0003, 0x0003, "Add Resource" },

    { 0x0004, 0x0004, "Delete Resource" },

    { 0x0005, 0x0005, "Continuous Feed Session Setup" },

    { 0x0006, 0x0006, "Status" },

    { 0x0007, 0x0007, "Reset" },

    { 0x0008, 0x0008, "Session Proceeding" },

    { 0x0009, 0x0009, "Session Connect" },

    { 0x000a, 0x000a, "Session Transfer" },

    { 0x000b, 0x000b, "Session In Progress" },

    { 0x000c, 0x01ff, "ISO/IEC 13818-6 Reserved" },

    { 0x0200, 0x03ff, "User Defined Message Scenario" },

    { 0x0400, 0xffff, "Invalid"},

    {      0,      0, NULL }

};

/* 4-4 */

static const range_string dsmcc_un_sess_message_type_vals[] = {

    {    0,    0, "Request Message" },

    { 0x01, 0x01, "Confirm Message" },

    { 0x02, 0x02, "Indication Message" },

    { 0x03, 0x03, "Response Message" },

    { 0x04, 0x0f, "ISO/IEC 13818-6 Reserved" },

    { 0x10, 0xff, "Invalid"},

    {    0,    0, NULL }

};

/* 4-5 */

static const value_string dsmcc_un_sess_message_id_vals[] = {

    { DSMCC_UN_SESS_CLN_SESS_SET_REQ,       "Client Session Setup Request" },

    { DSMCC_UN_SESS_CLN_SESS_SET_CNF,       "Client Session Setup Confirm" },

    { DSMCC_UN_SESS_CLN_SESS_REL_REQ,       "Client Session Release Request" },

    { DSMCC_UN_SESS_CLN_SESS_REL_CNF,       "Client Session Release Confirm" },

    { DSMCC_UN_SESS_CLN_SESS_REL_IND,       "Client Session Release Indication" },

    { DSMCC_UN_SESS_CLN_SESS_REL_RES,       "Client Session Release Response" },

    { DSMCC_UN_SESS_CLN_ADD_RSRC_IND,       "Client Add Resource Indication" },

    { DSMCC_UN_SESS_CLN_ADD_RSRC_RES,       "Client Add Resource Response" },

    { DSMCC_UN_SESS_CLN_DEL_RSRC_IND,       "Client Delete Resource Indication" },

    { DSMCC_UN_SESS_CLN_DEL_RSRC_RES,       "Client Delete Resource Response" },

    { DSMCC_UN_SESS_CLN_STATUS_REQ,         "Client Status Request" },

    { DSMCC_UN_SESS_CLN_STATUS_CNF,         "Client Status Confirm" },

    { DSMCC_UN_SESS_CLN_STATUS_IND,         "Client Status Indication" },

    { DSMCC_UN_SESS_CLN_STATUS_RES,         "Client Status Response" },

    { DSMCC_UN_SESS_CLN_RESET_REQ,          "Client Reset Request" },

    { DSMCC_UN_SESS_CLN_RESET_CNF,          "Client Reset Confirm" },

    { DSMCC_UN_SESS_CLN_RESET_IND,          "Client Reset Indication" },

    { DSMCC_UN_SESS_CLN_RESET_RES,          "Client Reset Response" },

    { DSMCC_UN_SESS_CLN_SESS_PROC_IND,      "Client Session Proceeding Indication" },

    { DSMCC_UN_SESS_CLN_CONN_REQ,           "Client Connect Request" },

    { DSMCC_UN_SESS_CLN_SESS_TRN_IND,       "Client Session Transfer Indication" },

    { DSMCC_UN_SESS_CLN_SESS_TRN_RES,       "Client Session Transfer Response" },

    { DSMCC_UN_SESS_CLN_SESS_INP_REQ,       "Client Session In Progress Request" },

    { DSMCC_UN_SESS_SRV_SESS_SET_IND,       "Server Session Setup Indication" },

    { DSMCC_UN_SESS_SRV_SESS_SET_RES,       "Server Session Setup Response" },

    { DSMCC_UN_SESS_SRV_SESS_REL_REQ,       "Server Session Release Request" },

    { DSMCC_UN_SESS_SRV_SESS_REL_CNF,       "Server Session Release Confirm" },

    { DSMCC_UN_SESS_SRV_SESS_REL_IND,       "Server Session Release Indication" },

    { DSMCC_UN_SESS_SRV_SESS_REL_RES,       "Server Session Release Response" },

    { DSMCC_UN_SESS_SRV_ADD_RSRC_REQ,       "Server Add Resource Request" },

    { DSMCC_UN_SESS_SRV_ADD_RSRC_CNF,       "Server Add Resource Confirm" },

    { DSMCC_UN_SESS_SRV_DEL_RSRC_REQ,       "Server Delete Resource Request" },

    { DSMCC_UN_SESS_SRV_DEL_RSRC_CNF,       "Server Delete Resource Confirm" },

    { DSMCC_UN_SESS_SRV_CONT_FEED_SESS_REQ, "Server Continuous Feed Session Request" },

    { DSMCC_UN_SESS_SRV_CONT_FEED_SESS_CNF, "Server Continuous Feed Session Confirm" },

    { DSMCC_UN_SESS_SRV_STATUS_REQ,         "Server Status Request" },

    { DSMCC_UN_SESS_SRV_STATUS_CNF,         "Server Status Confirm" },

    { DSMCC_UN_SESS_SRV_STATUS_IND,         "Server Status Indication" },

    { DSMCC_UN_SESS_SRV_STATUS_RES,         "Server Status Response" },

    { DSMCC_UN_SESS_SRV_RESET_REQ,          "Server Reset Request" },

    { DSMCC_UN_SESS_SRV_RESET_CNF,          "Server Reset Confirm" },

    { DSMCC_UN_SESS_SRV_RESET_IND,          "Server Reset Indication" },

    { DSMCC_UN_SESS_SRV_RESET_RES,          "Server Reset Response" },

    { DSMCC_UN_SESS_SRV_SESS_PROC_IND,      "Server Session Proceeding Indication" },

    { DSMCC_UN_SESS_SRV_CONN_IND,           "Server Connect Indication" },

    { DSMCC_UN_SESS_SRV_SESS_TRN_REQ,       "Server Session Transfer Request" },

    { DSMCC_UN_SESS_SRV_SESS_TRN_CNF,       "Server Session Transfer Confirm" },

    { DSMCC_UN_SESS_SRV_SESS_TRN_IND,       "Server Session Transfer Indication" },

    { DSMCC_UN_SESS_SRV_SESS_TRN_RES,       "Server Session Transfer Response" },

    { DSMCC_UN_SESS_SRV_SESS_INP_REQ,       "Server Session In Progress Request" },

    { 0, NULL }

};

/* 4-59 */

static const range_string dsmcc_un_sess_message_reason_codes_vals[] = {

    {      0,      0, "RsnOK. The command sequence is proceeding normally." },

    { 0x0001, 0x0001, "RsnNormal. Normal conditions for releasing the session." },

    { 0x0002, 0x0002, "RsnClProcError. Procedure error detected at the Client." },

    { 0x0003, 0x0003, "RsnNeProcError. Procedure error detected at the Network." },

    { 0x0004, 0x0004, "RsnSeProcError. Procedure error detected at the Server." },

    { 0x0005, 0x0005, "RsnClFormatError. Invalid format (e.g., missing parameter) detected at the Client." },

    { 0x0006, 0x0006, "RsnNeFormatError. Invalid format (e.g., missing parameter) detected at the Network." },

    { 0x0007, 0x0007, "RsnSeFormatError. Invalid format (e.g., missing parameter) detected at the Server." },

    { 0x0008, 0x0008, "RsnNeConfigCnf. Confirmed configuration sequence (i.e., Client must respond)" },

    { 0x0009, 0x0009, "RsnSeTranRefuse. Session transfer was refused by the destination Server." },

    { 0x000a, 0x000a, "RsnSeForwardOvl. Session forwarding is due to overload conditions." },

    { 0x000b, 0x000b, "RsnSeForwardMnt. Session forwarding is due to overload maintenance conditions." },

    { 0x000c, 0x000c, "RsnSeForwardUncond. Session forwarding is sent as an unconditional request." },

    { 0x000d, 0x000d, "RsnSeRejResource. Server rejected the assigned resources." },

    { 0x000e, 0x000e, "RsnNeBroadcast. Message is being broadcast and does not require a response." },

    { 0x000f, 0x000f, "RsnSeServiceTransfer. Server indicates that the Client shall establish a session to another serverId based on the context provided in the PrivateData()." },

    { 0x0010, 0x0010, "RsnClNoSession. Client indicates the Session ID is not active." },

    { 0x0011, 0x0011, "RsnSeNoSession. Server indicates the Session ID is not active." },

    { 0x0012, 0x0012, "RsnNeNoSession. Network indicates the Session ID is not active." },

    { 0x0013, 0x0013, "RsnRetrans. Message is a retransmission." },

    { 0x0014, 0x0014, "RsnNoTransaction. Message was received without a Transaction ID." },

    { 0x0015, 0x0015, "RsnClNoResource. Requested resource is not supported." },

    { 0x0016, 0x0016, "RsnClRejResource. Client rejected the assigned resources." },

    { 0x0017, 0x0017, "RsnNeRejResource. Network rejected the assigned resources assigned by the Server." },

    { 0x0018, 0x0018, "RsnNeTimerExpired. The message is being sent as the result of an expired timer." },

    { 0x0019, 0x0019, "RsnClSessionRelease. Client initiated session release." },

    { 0x001a, 0x001a, "RsnSeSessionRelease. Server initiated session release." },

    { 0x001b, 0x001b, "RsnNeSessionRelease. Network initiated session release." },

    { 0x001c, 0x7fff, "Reserved" },

    { 0x7fff, 0xffff, "User Defined Reason Code" },

    {      0,      0, NULL }

};

/* 4-60 */

static const range_string dsmcc_un_sess_message_response_codes_vals[] = {

    {      0,      0, "RspOK. Request completed with no errors." },

    { 0x0001, 0x0001, "RspClNoSession. Client rejected the request because the requested Session ID is invalid." },

    { 0x0002, 0x0002, "RspNeNoCalls. Network is unable to accept new sessions." },

    { 0x0003, 0x0003, "RspNeInvalidClient. Network rejected the request due to an invalid Client ID." },

    { 0x0004, 0x0004, "RspNeInvalidServer. Network rejected the request due to an invalid Server ID." },

    { 0x0005, 0x0005, "RspNeNoSession. Network rejected the request because the requested Session ID is invalid." },

    { 0x0006, 0x0006, "RspSeNoCalls. Server is unable to accept new sessions." },

    { 0x0007, 0x0007, "RspSeInvalidClient. Server rejected the request due to an invalid Client ID." },

    { 0x0008, 0x0008, "RspSeNoService. Server rejected the request because the requested service could not be provided." },

    { 0x0009, 0x0009, "RspSeNoCFS. Server rejected the request because the requested Continuous Feed Session could not be found." },

    { 0x000a, 0x000a, "RspClNoResponse. Network timed out before the Client responded to an Indication message." },

    { 0x000b, 0x000b, "RspSeNoResponse. Network timed out before the Server responded to an Indication message." },

    { 0x000c, 0x000f, "ISO/IEC 13818-6 reserved." },

    { 0x0010, 0x0010, "RspSeNoSession. Server rejected the request because the requested Session ID is invalid." },

    { 0x0011, 0x0011, "RspNeResourceContinue. Resource request completed with no errors but, an indicated resource was assigned an alternate value by the Network." },

    { 0x0012, 0x0012, "RspNeResourceFailed. Resource request failed because the Network was unable to assign the requested resources." },

    { 0x0013, 0x0013, "RspNeResourceOK. Requested command completed with no errors." },

    { 0x0014, 0x0014, "RspResourceNegotiate. Network was able to complete a request but has assigned alternate values to a negotiable field." },

    { 0x0015, 0x0015, "RspClSessProceed. Network is waiting on a response from the server." },

    { 0x0016, 0x0016, "RspClUnkRequestID. Client received a message which contained an unknown Resource Request ID." },

    { 0x0017, 0x0017, "RspClNoResource. Client rejected a session set-up because it was unable to use the assigned resources." },

    { 0x0018, 0x0018, "RspClNoCalls. Client rejected a session set-up because it was not accepting calls at that time." },

    { 0x0019, 0x0019, "RspNeNoResource. Network is unable to assign one or more resources to a session." },

    { 0x001a, 0x001f, "ISO/IEC 13818-6 reserved." },

    { 0x0020, 0x0020, "RspSeNoResource. Server is unable to complete a session set-up because the required resources are not available." },

    { 0x0021, 0x0021, "RspSeRejResource. Server rejected the assigned resources." },

    { 0x0022, 0x0022, "RspClProcError. Procedure error detected at the Client." },

    { 0x0023, 0x0023, "RspNeProcError. Procedure error detected at the Network." },

    { 0x0024, 0x0024, "RspSeProcError. Procedure error detected at the Server." },

    { 0x0025, 0x0025, "RspClFormatError. Invalid format (e.g., missing parameter) detected at Client." },

    { 0x0026, 0x0026, "RspNeFormatError. Invalid format (e.g., missing parameter) detected at Network." },

    { 0x0027, 0x0027, "RspSeFormatError. Invalid format (e.g., missing parameter) detected at Server." },

    { 0x0028, 0x0028, "RspSeForwardOvl. Session forwarding is due to overload conditions." },

    { 0x0029, 0x0029, "RspSeForwardMnt. Session forwarding is due to overload maintenance conditions." },

    { 0x002a, 0x002a, "RspClRejResource. Client rejected a resource assigned to a session." },

    { 0x002b, 0x002f, "ISO/IEC 13818-6 reserved." },

    { 0x0030, 0x0030, "RspSeForwardUncond. Session forwarding is sent as an unconditional request." },

    { 0x0031, 0x0031, "RspNeTransferFailed. Session transfer failed at the Network." },

    { 0x0032, 0x0032, "RspClTransferReject. Session transfer was rejected by the Client." },

    { 0x0033, 0x0033, "RspSeTransferReject. Session transfer was rejected by the Server." },

    { 0x0034, 0x0034, "RspSeTransferResource. Server rejected the session transfer due to insufficient resource." },

    { 0x0035, 0x0035, "RspResourceCompleted. Server has accepted the resources assigned by the Network." },

    { 0x0036, 0x0036, "RspForward. Server is requesting a Session Forward." },

    { 0x0037, 0x0037, "RspNeForwardFailed. Network is unable to process a Session Forward." },

    { 0x0038, 0x0038, "RspClForwarded. Session was forwarded to the indicated Client ID." },

    { 0x0039, 0x0040, "ISO/IEC 13818-6 reserved." },

    { 0x0041, 0x0041, "RspSeTransferNoRes. The transfer to Server could not get enough resources, so it rejected the transfer." },

    { 0x0042, 0x0042, "RspNeNotOwner. An action was requested on a session by a User which was not the owner of that session." },

    { 0x0043, 0x7fff, "ISO/IEC 13818-6 reserved." },

    { 0x8000, 0xffff, "User Defined Response Code" },

    {      0,      0, NULL }

};

/* 4-61 */

static const range_string dsmcc_un_sess_status_type_vals[] = {

    {      0,      0, "Reserved" },

    { 0x0001, 0x0001, "Identify Session List" },

    { 0x0002, 0x0002, "Identify Session Status" },

    { 0x0003, 0x0003, "Identify Configuration" },

    { 0x0004, 0x0004, "Query Resource Descriptor" },

    { 0x0005, 0x0005, "Query Resource Status" },

    { 0x0006, 0x7fff, "Reserved" },

    { 0x8000, 0xffff, "User Defined Status Type" },

    {      0,      0,  NULL }

};

/* 4-64 */

static const range_string dsmcc_un_sess_rsrc_number_assignor_vals[] = {

    {    0,    0, "Reserved" },

    { 0x01, 0x01, "Client" },

    { 0x02, 0x02, "Server" },

    { 0x03, 0x03, "Network" },

    { 0x04, 0xff, "Reserved" },

    {    0,    0, NULL }

};

/* 4-65 */

static const range_string dsmcc_un_sess_rsrc_association_tag_vals[] = {

    {    0,    0, "Reserved" },

    { 0x01, 0x01, "Client" },

    { 0x02, 0x02, "Server" },

    { 0x03, 0x03, "Network" },

    { 0x04, 0xff, "Reserved" },

    {    0,    0, NULL }

};

/* 4-66 */

static const range_string dsmcc_un_sess_rsrc_allocator_vals[] = {

    {    0,    0, "Unspecified" },

    { 0x01, 0x01, "Client" },

    { 0x02, 0x02, "Server" },

    { 0x03, 0x03, "Network" },

    { 0x04, 0xff, "Reserved" },

    {    0,    0, NULL }

};

/* 4-67 */

static const range_string dsmcc_un_sess_rsrc_attribute_vals[] = {

    {    0,    0, "Mandatory Non-Negotiable" },

    { 0x01, 0x01, "Mandatory Negotiable" },

    { 0x02, 0x02, "Non-Mandatory Non-Negotiable" },

    { 0x03, 0x03, "Non-Mandatory Negotiable" },

    { 0x04, 0x0f, "Reserved"},

    { 0x10, 0xff, "Invalid"},

    {    0,    0,  NULL }

};

/* 4-68 */

static const range_string dsmcc_un_sess_rsrc_view_vals[] = {

    {    0,    0, "Reserved" },

    { 0x01, 0x01, "Client View" },

    { 0x02, 0x02, "Server View" },

    { 0x03, 0x03, "Reserved" },

    { 0x04, 0xff, "Invalid" },

    {    0, 0, NULL }

};

/* 4-69 */

static const range_string dsmcc_un_sess_rsrc_status_vals[] = {

    {    0,    0, "Reserved" },

    { 0x01, 0x01, "Requested" },

    { 0x02, 0x02, "In Progress" },

    { 0x03, 0x03, "Alternate Assigned" },

    { 0x04, 0x04, "Assigned"},

    { 0x05, 0x05, "Failed"},

    { 0x06, 0x06, "Unprocessed"},

    { 0x07, 0x07, "Invalid"},

    { 0x08, 0x08, "Released"},

    { 0x09, 0x7f, "Reserved"},

    { 0x80, 0xff, "User Defined"},

    {    0,    0,  NULL }

};

/* 4-72 */

static const range_string dsmcc_un_sess_rsrc_value_types_vals[] = {

    {      0,      0, "Reserved" },

    { 0x0001, 0x0001, "Single" },

    { 0x0002, 0x0002, "List" },

    { 0x0003, 0x0003, "Range" },

    { 0x0004, 0x7fff, "Reserved"},

    { 0x8000, 0xffff, "User Defined"},

    {      0,      0,  NULL }

};

/* 4-73 */

static const range_string dsmcc_un_sess_rsrc_descriptor_type_vals[] = {

    {      0,      0, "Reserved" },

    { 0x0001, 0x0001, "Continuous Feed Session" },

    { 0x0002, 0x0002, "ATM Connection" },

    { 0x0003, 0x0003, "MPEG Program" },

    { 0x0004, 0x0004, "Physical Channel" },

    { 0x0005, 0x0005, "TS Upstream Bandwidth" },

    { 0x0006, 0x0006, "TS Downstream Bandwidth" },

    { 0x0007, 0x0007, "ATM SVC Connection" },

    { 0x0008, 0x0008, "Connection Notify" },

    { 0x0009, 0x0009, "IP" },

    { 0x000a, 0x000a, "Client TDMA Assignment" },

    { 0x000b, 0x000b, "PSTN Setup" },

    { 0x000c, 0x000c, "NISDN Setup" },

    { 0x000d, 0x000d, "NISDN Connection" },

    { 0x000e, 0x000e, "Q.922 Connections" },

    { 0x000f, 0x000f, "Headend List" },

    { 0x0010, 0x0010, "ATM VC Connection" },

    { 0x0011, 0x0011, "SDB Continuous Feed" },

    { 0x0012, 0x0012, "SDB Associations" },

    { 0x0013, 0x0013, "SDB Entitlement" },

    { 0x0014, 0x7ffd, "Reserved" },

    { 0x7ffe, 0x7ffe, "Shared Resource" },

    { 0x7fff, 0x7fff, "Shared Request ID" },

    { 0x8000, 0xf000, "User Defined" },

    { 0xf001, 0xf001, "Modulation Mode" },

    { 0xf002, 0xf002, "User Defined" },

    { 0xf003, 0xf003, "Headend ID" },

    { 0xf004, 0xf004, "Server Conditional Access" },

    { 0xf005, 0xf005, "Client Conditional Access" },

    { 0xf006, 0xf006, "Ethernet Interface" },

    { 0xf007, 0xf007, "Service Group" },

    { 0xf008, 0xfffe, "User Defined" },

    { 0xffff, 0xffff, "User Defined Type Owner" },

    {      0,      0,  NULL }

};

/* table 4-78 direction values */

static const range_string dsmcc_un_sess_rsrc_phys_chan_direction_vals[] = {

    {      0,      0, "Downstream (Server to Client)" },

    { 0x0001, 0x0001, "Upstream (Client to Server)" },

    { 0x0002, 0xffff, "ISO/IEC 13818-6 Reserved" },

    {      0,      0, NULL }

};

/* 4-84 IP protocol types */

static const range_string dsmcc_un_sess_rsrc_ip_protocol_types_vals[] = {

    {      0,      0, "Reserved" },

    { 0x0001, 0x0001, "TCP" },

    { 0x0002, 0x0002, "UDP" },

    { 0x0003, 0x7fff, "Reserved" },

    { 0x8000, 0xffff, "User Defined" },

    {      0,      0,  NULL }

};

/* user defined 0xf001-0xf007 - start */

static const range_string dsmcc_un_sess_rsrc_modulation_format_vals[] = {

    { 0x00, 0x00, "Unknown" },

    { 0x01, 0x05, "Reserved" },

    { 0x06, 0x06, "QAM16" },

    { 0x07, 0x07, "QAM32" },

    { 0x08, 0x08, "QAM64" },

    { 0x09, 0x0b, "Reserved" },

    { 0x0c, 0x0c, "QAM128" },

    { 0x0d, 0x0f, "Reserved" },

    { 0x10, 0x10, "QAM256" },

    { 0x11, 0xff, "Reserved" },

    {    0,    0, NULL }

};

static const range_string dsmcc_un_sess_rsrc_transmission_system_vals[] = {

    {    0,    0, "Unknown Transmission System" },

    { 0x01, 0x01, "SADVB Transmission System" },

    { 0x02, 0x02, "GI Transmission System" },

    { 0x03, 0xff, "Reserved" },

    {    0,    0, NULL }

};

static const range_string dsmcc_un_sess_rsrc_mod_mode_vals[] = {

    {    0,    0, "No Modulation Mode" },

    { 0x01, 0x18, "Reserved" },

    { 0x19, 0x19, "QAM 4 Modulation Mode"},

    { 0x1a, 0xff, "Reserved" },

    {    0,    0, NULL }

};

static const range_string dsmcc_un_sess_rsrc_fec_vals[] = {

    {    0,    0, "FEC Transmission System" },

    { 0x01, 0x01, "FEC DAVIC" },

    { 0x02, 0xff, "Reserved"},

    {    0,    0, NULL }

};

static const range_string dsmcc_un_sess_rsrc_headend_flag_vals[] = {

    {    0,    0, "Invalid" },

    { 0x01, 0x01, "The session is intended for the Head End named by the HeadEndId" },

    { 0x02, 0x02, "The session is intended for the Head End where the content is introduced to the network" },

    { 0x03, 0x03, "The session is intended for all Head Ends that have QAMs"},

    { 0x04, 0x04, "The session is intended for the QAM with an output Transport Stream ID named by the TransportStreamId"},

    { 0x05, 0xff, "Invalid" },

    {    0,    0, NULL }

};

/* user defined 0xf001-0xf007 - end */

/* 7-4 */

static const value_string dsmcc_dd_message_id_vals[] = {

    { 0x1001, "Download Info Request" },

    { 0x1002, "Download Info Indication" },

    { 0x1003, "Download Data Block" },

    { 0x1004, "Download Data Request" },

    { 0x1005, "Download Data Cancel" },

    { 0x1006, "Download Server Initiate" },

    {      0, NULL }

};

/* 9-2 */

static const value_string dsmcc_payload_name_vals[] = {

    { DSMCC_TID_LLCSNAP,   "LLCSNAP" },

    { DSMCC_TID_UN_MSG,    "User Network Message" },

    { DSMCC_TID_DD_MSG,    "Download Data Message" },

    { DSMCC_TID_DESC_LIST, "Descriptor List" },

    { DSMCC_TID_PRIVATE,   "Private" },

    { 0, NULL }

};

/* U-N Session Message Flags */

static int * const bf_message_id[] = {

    &hf_dsmcc_un_sess_flag_message_discriminator,

    &hf_dsmcc_un_sess_flag_message_scenario,

    &hf_dsmcc_un_sess_flag_message_type,

    NULL

};

static int * const bf_transaction_id[] = {

    &hf_dsmcc_un_sess_flag_transaction_id_originator,

    &hf_dsmcc_un_sess_flag_transaction_id_number,

    NULL

};

static int * const bf_rsrc_number[] = {

    &hf_dsmcc_un_sess_rsrc_flag_num_assignor,

    &hf_dsmcc_un_sess_rsrc_flag_num_value,

    NULL

};

static int * const bf_rsrc_association_tag[] = {

    &hf_dsmcc_un_sess_rsrc_flag_association_tag_assignor,

    &hf_dsmcc_un_sess_rsrc_flag_association_tag_value,

    NULL

};

static int * const bf_rsrc_flags[] = {

    &hf_dsmcc_un_sess_rsrc_flag_view,

    &hf_dsmcc_un_sess_rsrc_flag_attribute,

    &hf_dsmcc_un_sess_rsrc_flag_allocator,

    NULL

};

/* Table J.3 E.164 NSAP */

static unsigned

dissect_dsmcc_un_session_nsap(

        tvbuff_t *tvb, unsigned offset, packet_info *pinfo _U_, proto_tree *sub_tree)

{

    unsigned offset_start;

    offset_start = offset;

    proto_tree_add_item(sub_tree, hf_dsmcc_un_sess_nsap_afi, tvb, offset, 1, ENC_NA);

    offset += 1;

    proto_tree_add_item(sub_tree, hf_dsmcc_un_sess_nsap_idi, tvb, offset, 8, ENC_NA);

    offset += 8;

    proto_tree_add_item(sub_tree, hf_dsmcc_un_sess_nsap_ho_dsp, tvb, offset, 4, ENC_BIG_ENDIAN);

    offset += 4;

    proto_tree_add_item(sub_tree, hf_dsmcc_un_sess_nsap_esi, tvb, offset, 6, ENC_NA);

    offset += 6;

    proto_tree_add_item(sub_tree, hf_dsmcc_un_sess_nsap_sel, tvb, offset, 1, ENC_NA);

    offset += 1;

    return offset-offset_start;

}

/* 4-58 SessionId */

static unsigned

dissect_dsmcc_un_session_id(

        tvbuff_t *tvb, unsigned offset, packet_info *pinfo _U_, proto_tree *sub_tree)

{

    proto_tree *sub_sub_tree;

    unsigned    offset_start;

    offset_start = offset;

    sub_sub_tree = proto_tree_add_subtree(sub_tree, tvb, offset, 10, ett_dsmcc_heading, NULL, "Session ID");

    proto_item_set_text(sub_sub_tree, "Session ID: 0x%s", tvb_bytes_to_str(pinfo->pool, tvb, offset, 10));

    proto_tree_add_item(sub_sub_tree, hf_dsmcc_un_sess_session_id_device_id, tvb, offset, 6, ENC_NA);

    offset += 6;

    proto_tree_add_item(sub_sub_tree, hf_dsmcc_un_sess_session_id_session_number, tvb, offset, 4, ENC_BIG_ENDIAN);

    offset += 4;

    return offset-offset_start;

}

/* Table 2-4 Adaptation Header Format */

static void

dissect_dsmcc_adaptation_header(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)

{

    tvbuff_t   *sub_tvb;

    unsigned    offset = 0;

    proto_item *pi;

    proto_tree *sub_tree;

    proto_tree *sub_sub_tree;

    uint8_t     type, tmp;

    uint16_t    ca_len;

    type = tvb_get_uint8(tvb, offset);

    if (1 == type) {

        sub_tree = proto_tree_add_subtree(tree, tvb, offset, -1, ett_dsmcc_adaptation_header, NULL, "Adaptation Header");

        proto_tree_add_item(sub_tree, hf_dsmcc_adaptation_type, tvb, offset, 1, ENC_BIG_ENDIAN);

        offset += 1;

        tmp = tvb_get_uint8(tvb, offset);

        pi = proto_tree_add_item(sub_tree, hf_dsmcc_adaptation_ca_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);

        if (0xff != tmp) {

            expert_add_info_format(pinfo, pi, &ei_dsmcc_invalid_value, "Invalid value - should be 0xff");

        }

        offset += 1;

        proto_tree_add_item(sub_tree, hf_dsmcc_adaptation_ca_system_id, tvb, offset, 2, ENC_BIG_ENDIAN);

        offset += 2;

        ca_len = tvb_get_ntohs(tvb, offset);

        proto_tree_add_item(sub_tree, hf_dsmcc_adaptation_ca_length, tvb, offset, 2, ENC_BIG_ENDIAN);

        offset += 2;

        sub_tvb = tvb_new_subset_length(tvb, offset, ca_len);

        call_data_dissector(sub_tvb, pinfo, tree);

    } else if (2 == type) {

        sub_tree = proto_tree_add_subtree(tree, tvb, offset, -1, ett_dsmcc_adaptation_header, NULL, "Adaptation Header");

        proto_tree_add_item(sub_tree, hf_dsmcc_adaptation_type, tvb, offset, 1, ENC_BIG_ENDIAN);

        offset += 1;

        tmp = tvb_get_uint8(tvb, offset);

        pi = proto_tree_add_item(sub_tree, hf_dsmcc_adaptation_user_id_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);

        if (0xff != tmp) {

            expert_add_info_format(pinfo, pi, &ei_dsmcc_invalid_value, "Invalid value - should be 0xff");

        }

        offset += 1;

        sub_sub_tree = proto_tree_add_subtree(sub_tree, tvb, offset, 20, ett_dsmcc_heading, NULL, "User ID");

        dissect_dsmcc_un_session_nsap(tvb, offset, pinfo, sub_sub_tree);

    } else {

        sub_tree = proto_tree_add_subtree(tree, tvb, offset, -1, ett_dsmcc_adaptation_header, NULL, "Unknown Adaptation Header");

        proto_tree_add_item(sub_tree, hf_dsmcc_adaptation_type, tvb, offset, 1, ENC_BIG_ENDIAN);

    }

}

/* Table 2-1 DSM-CC Message Header Format */

static unsigned

dissect_dsmcc_header(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, unsigned offset, bool download_header)

{

    tvbuff_t   *sub_tvb;

    proto_item *pi;

    proto_tree *sub_tree;

    uint8_t     prot_disc, adaptation_len;

    unsigned    reserved, offset_start;

    int         msg_id, tx_id;

    offset_start = offset;

    prot_disc = tvb_get_uint8(tvb, offset);

    reserved = tvb_get_uint8(tvb, 8+offset);

    adaptation_len = tvb_get_uint8(tvb, 9+offset);

    sub_tree = proto_tree_add_subtree(tree, tvb, offset, 12+adaptation_len, ett_dsmcc_header, NULL, "DSM-CC Header");

    pi = proto_tree_add_item(sub_tree, hf_dsmcc_protocol_discriminator, tvb, offset, 1, ENC_BIG_ENDIAN);

    if (DSMCC_PROT_DISC != prot_disc) {

        expert_add_info_format(pinfo, pi, &ei_dsmcc_invalid_value, "Invalid value - should be 0x11");

    }

    offset += 1;

    proto_tree_add_item(sub_tree, hf_dsmcc_type, tvb, offset, 1, ENC_BIG_ENDIAN);

    offset += 1;

    if (true == download_header) {

        msg_id = hf_dsmcc_dd_message_id;

        tx_id = hf_dsmcc_dd_download_id;

        proto_tree_add_item(sub_tree, msg_id, tvb, offset, 2, ENC_BIG_ENDIAN);

        offset += 2;

        proto_tree_add_item(sub_tree, tx_id, tvb, offset, 4, ENC_BIG_ENDIAN);

        offset += 4;

    } else {

        msg_id = hf_dsmcc_message_id;

        tx_id = hf_dsmcc_transaction_id;

        proto_tree_add_bitmask_with_flags(sub_tree, tvb, offset, msg_id, ett_dsmcc_message_id, bf_message_id, ENC_BIG_ENDIAN, BMT_NO_APPEND);

        offset += 2;

        proto_tree_add_bitmask_with_flags(sub_tree, tvb, offset, tx_id, ett_dsmcc_transaction_id, bf_transaction_id, ENC_BIG_ENDIAN, BMT_NO_APPEND);

        offset += 4;

    }

    pi = proto_tree_add_item(sub_tree, hf_dsmcc_header_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);

    if (0xff != reserved) {