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-rw-r--r--epan/dissectors/packet-ehs.c1966
1 files changed, 1966 insertions, 0 deletions
diff --git a/epan/dissectors/packet-ehs.c b/epan/dissectors/packet-ehs.c
new file mode 100644
index 00000000..16392e9d
--- /dev/null
+++ b/epan/dissectors/packet-ehs.c
@@ -0,0 +1,1966 @@
+/* packet-ehs.c
+ * Routines for "Enhanced HOSC System" (EHS) dissection
+ * Copyright 2000, Scott Hovis scott.hovis@ums.msfc.nasa.gov
+ * Enhanced 2008, Matt Dunkle Matthew.L.Dunkle@nasa.gov
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.com>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+
+void proto_register_ehs(void);
+void proto_reg_handoff_ehs(void);
+
+/* Initialize the protocol and registered fields */
+static int proto_ehs = -1;
+
+static int hf_ehs_ph_version = -1;
+static int hf_ehs_ph_project = -1;
+static int hf_ehs_ph_support_mode = -1;
+static int hf_ehs_ph_data_mode = -1;
+static int hf_ehs_ph_mission = -1;
+static int hf_ehs_ph_protocol = -1;
+
+static int hf_ehs_ph_year = -1; /* numeric year as years since 1900 */
+static int hf_ehs_ph_jday = -1; /* julian day of year */
+static int hf_ehs_ph_hour = -1;
+static int hf_ehs_ph_minute = -1;
+static int hf_ehs_ph_second = -1;
+static int hf_ehs_ph_tenths = -1;
+
+static int hf_ehs_ph_new_data_flag = -1; /* indicates the time has changed */
+/* static int hf_ehs_ph_pad1 = -1; */
+static int hf_ehs_ph_hold_flag = -1; /* indicates a hold condition */
+static int hf_ehs_ph_sign_flag = -1; /* indicates pre-mission, i.e. countdown, time */
+
+/* static int hf_ehs_ph_pad2 = -1; */
+/* static int hf_ehs_ph_pad3 = -1; */
+/* static int hf_ehs_ph_pad4 = -1; */
+
+static int hf_ehs_ph_hosc_packet_size = -1;
+
+/* generic ehs secondary header values */
+static int hf_ehs_sh_version = -1;
+static int hf_ehs_sh_data_status_bit_5 = -1;
+static int hf_ehs_sh_data_status_bit_4 = -1;
+static int hf_ehs_sh_data_status_bit_3 = -1;
+static int hf_ehs_sh_data_status_bit_2 = -1;
+static int hf_ehs_sh_data_status_bit_1 = -1;
+static int hf_ehs_sh_data_status_bit_0 = -1;
+
+/* other common remappings of the data status bits specific to certain secondary ehs header values */
+static int hf_ehs_sh_parent_stream_error = -1; /* data status bit 3 */
+static int hf_ehs_sh_vcdu_sequence_error = -1; /* data status bit 2 */
+static int hf_ehs_sh_packet_sequence_error = -1; /* data status bit 1 */
+
+/* common ehs secondary header values */
+static int hf_ehs_sh_vcdu_sequence_number = -1;
+static int hf_ehs_sh_data_stream_id = -1;
+/* static int hf_ehs_sh_pdss_reserved_1 = -1; */
+/* static int hf_ehs_sh_pdss_reserved_2 = -1; */
+/* static int hf_ehs_sh_pdss_reserved_3 = -1; */
+static int hf_ehs_sh_gse_pkt_id = -1;
+static int hf_ehs_sh_payload_vs_core_id = -1;
+static int hf_ehs_sh_apid = -1;
+static int hf_ehs_sh_virtual_channel = -1;
+static int hf_ehs_sh_pdss_reserved_sync = -1;
+
+/* tdm ehs secondary header values */
+static int hf_ehs_sh_tdm_secondary_header_length = -1;
+
+static int hf_ehs_sh_tdm_extra_data_packet = -1;
+static int hf_ehs_sh_tdm_backup_stream_id_number = -1;
+static int hf_ehs_sh_tdm_end_of_data_flag = -1;
+static int hf_ehs_sh_tdm_parent_frame_error = -1;
+static int hf_ehs_sh_tdm_checksum_error = -1;
+static int hf_ehs_sh_tdm_fixed_value_error = -1;
+
+static int hf_ehs_sh_tdm_minor_frame_counter_error = -1;
+static int hf_ehs_sh_tdm_format_id_error = -1;
+static int hf_ehs_sh_tdm_bit_slip_error = -1;
+static int hf_ehs_sh_tdm_sync_error = -1;
+static int hf_ehs_sh_tdm_aoslos_flag = -1;
+static int hf_ehs_sh_tdm_override_errors_flag = -1;
+static int hf_ehs_sh_tdm_data_status = -1;
+
+static int hf_ehs_sh_tdm_idq = -1;
+static int hf_ehs_sh_tdm_cdq = -1;
+static int hf_ehs_sh_tdm_adq = -1;
+static int hf_ehs_sh_tdm_data_dq = -1;
+/* static int hf_ehs_sh_tdm_unused = -1; */
+static int hf_ehs_sh_tdm_format_id = -1;
+
+static int hf_ehs_sh_tdm_major_frame_packet_index = -1;
+static int hf_ehs_sh_tdm_numpkts_per_major_frame = -1;
+static int hf_ehs_sh_tdm_num_minor_frames_per_packet = -1;
+
+static int hf_ehs_sh_tdm_cntmet_present = -1;
+static int hf_ehs_sh_tdm_obt_present = -1;
+static int hf_ehs_sh_tdm_major_frame_status_present = -1;
+/* static int hf_ehs_sh_tdm_reserved = -1; */
+
+static int hf_ehs_sh_tdm_cnt_year = -1; /* numeric year as years since 1900 */
+static int hf_ehs_sh_tdm_cnt_jday = -1; /* julian day of year */
+static int hf_ehs_sh_tdm_cnt_hour = -1;
+static int hf_ehs_sh_tdm_cnt_minute = -1;
+static int hf_ehs_sh_tdm_cnt_second = -1;
+static int hf_ehs_sh_tdm_cnt_tenths = -1;
+
+static int hf_ehs_sh_tdm_obt_year = -1; /* numeric year as years since 1900 */
+static int hf_ehs_sh_tdm_obt_jday = -1; /* julian day of year */
+static int hf_ehs_sh_tdm_obt_hour = -1;
+static int hf_ehs_sh_tdm_obt_minute = -1;
+static int hf_ehs_sh_tdm_obt_second = -1;
+static int hf_ehs_sh_tdm_obt_tenths = -1;
+
+static int hf_ehs_sh_tdm_obt_delta_time_flag = -1;
+static int hf_ehs_sh_tdm_obt_computed_flag = -1;
+static int hf_ehs_sh_tdm_obt_not_retrieved_flag = -1;
+/* static int hf_ehs_sh_tdm_obt_reserved = -1; */
+static int hf_ehs_sh_tdm_obt_source_apid = -1;
+
+static int hf_ehs_sh_tdm_num_major_frame_status_words = -1;
+
+/* static int hf_ehs_sh_tdm_mjfs_reserved = -1; */
+static int hf_ehs_sh_tdm_mjfs_parent_frame_error = -1;
+static int hf_ehs_sh_tdm_mjfs_checksum_error = -1;
+static int hf_ehs_sh_tdm_mjfs_fixed_value_error = -1;
+
+static int hf_ehs_sh_tdm_mnfs_parent_frame_error = -1;
+static int hf_ehs_sh_tdm_mnfs_data_not_available = -1;
+static int hf_ehs_sh_tdm_mnfs_checksum_error = -1;
+static int hf_ehs_sh_tdm_mnfs_fixed_value_error = -1;
+static int hf_ehs_sh_tdm_mnfs_counter_error = -1;
+static int hf_ehs_sh_tdm_mnfs_format_id_error = -1;
+static int hf_ehs_sh_tdm_mnfs_bit_slip_error = -1;
+static int hf_ehs_sh_tdm_mnfs_sync_error = -1;
+
+/* pseudo ehs secondary header values */
+/* static int hf_ehs_sh_pseudo_unused = -1; */
+static int hf_ehs_sh_pseudo_workstation_id = -1;
+static int hf_ehs_sh_pseudo_user_id = -1;
+static int hf_ehs_sh_pseudo_comp_id = -1;
+
+/* data zone values for well known protocol AOS/LOS */
+static int hf_ehs_dz_aoslos_indicator = -1;
+
+/* data zone values for well known protocol UDSM */
+static int hf_ehs_dz_udsm_ccsds_vs_bpdu = -1;
+/* static int hf_ehs_dz_udsm_unused1 = -1; */
+
+/* static int hf_ehs_dz_udsm_unused2 = -1; */
+
+/* static int hf_ehs_dz_udsm_unused3 = -1; */
+static int hf_ehs_dz_udsm_gse_pkt_id = -1;
+static int hf_ehs_dz_udsm_payload_vs_core = -1;
+static int hf_ehs_dz_udsm_apid = -1;
+
+static int hf_ehs_dz_udsm_start_time_year = -1;
+static int hf_ehs_dz_udsm_start_time_jday = -1;
+static int hf_ehs_dz_udsm_start_time_hour = -1;
+static int hf_ehs_dz_udsm_start_time_minute = -1;
+static int hf_ehs_dz_udsm_start_time_second = -1;
+
+static int hf_ehs_dz_udsm_stop_time_year = -1;
+static int hf_ehs_dz_udsm_stop_time_jday = -1;
+static int hf_ehs_dz_udsm_stop_time_hour = -1;
+static int hf_ehs_dz_udsm_stop_time_minute = -1;
+static int hf_ehs_dz_udsm_stop_time_second = -1;
+
+/* static int hf_ehs_dz_udsm_unused4 = -1; */
+
+static int hf_ehs_dz_udsm_num_pkts_xmtd = -1;
+
+static int hf_ehs_dz_udsm_num_vcdu_seqerrs = -1;
+
+static int hf_ehs_dz_udsm_num_pkt_seqerrs = -1;
+
+static int hf_ehs_dz_udsm_num_pktlen_errors = -1;
+
+static int hf_ehs_dz_udsm_event = -1;
+
+static int hf_ehs_dz_udsm_num_pkts_xmtd_rollover = -1;
+
+
+static dissector_handle_t ehs_handle;
+
+/* handle to ccsds packet dissector */
+static dissector_handle_t ccsds_handle;
+
+/* Initialize the subtree pointers */
+static gint ett_ehs = -1;
+static gint ett_ehs_primary_header = -1;
+static gint ett_ehs_secondary_header = -1;
+static gint ett_ehs_data_zone = -1;
+static gint ett_ehs_cnt_time = -1;
+static gint ett_ehs_obt_time = -1;
+static gint ett_ehs_udsm_start_time = -1;
+static gint ett_ehs_udsm_stop_time = -1;
+static gint ett_ehs_ground_receipt_time = -1;
+static gint ett_ehs_major_frame = -1;
+static gint ett_ehs_minor_frame = -1;
+
+/* EHS protocol types */
+typedef enum EHS_Protocol_Type
+{
+ EHS_PROTOCOL__ALL_PROTOCOLS,
+ EHS_PROTOCOL__TDM_TELEMETRY,
+ EHS_PROTOCOL__NASCOM_TELEMETRY,
+ EHS_PROTOCOL__PSEUDO_TELEMETRY,
+ EHS_PROTOCOL__TDS_DATA,
+ EHS_PROTOCOL__TEST_DATA,
+ EHS_PROTOCOL__GSE_DATA,
+ EHS_PROTOCOL__CUSTOM_DATA,
+ EHS_PROTOCOL__HDRS_DQ,
+ EHS_PROTOCOL__CSS,
+ EHS_PROTOCOL__AOS_LOS,
+ EHS_PROTOCOL__PDSS_PAYLOAD_CCSDS_PACKET,
+ EHS_PROTOCOL__PDSS_CORE_CCSDS_PACKET,
+ EHS_PROTOCOL__PDSS_PAYLOAD_BPDU,
+ EHS_PROTOCOL__PDSS_UDSM,
+ EHS_PROTOCOL__PDSS_RPSM,
+ NUMBER_PROTOCOLS = 15
+} EHS_Protocol_Type_t;
+
+
+/* some basic sizing parameters */
+enum
+{
+ IP_HEADER_LENGTH = 48,
+ CCSDS_PRIMARY_HEADER_LENGTH = 6,
+ CCSDS_SECONDARY_HEADER_LENGTH = 10,
+ EHS_PRIMARY_HEADER_SIZE = 16,
+ EHS_SECONDARY_HEADER_SIZE = 12
+};
+
+/* determine if a ccsds primary header indicates a secondary exists */
+#define HDR_SECHDR 0x0800
+
+
+static const value_string ehs_primary_header_project[] =
+{
+ { 0, "All" },
+ { 1, "STS" },
+ { 2, "SL" },
+ { 3, "ISS" },
+ { 4, "AXAF" },
+ { 0, NULL }
+};
+
+static const value_string ehs_primary_header_support_mode[] =
+{
+ { 0, "All" },
+ { 1, "Flight" },
+ { 2, "Test" },
+ { 3, "Sim" },
+ { 4, "Validation" },
+ { 5, "Development" },
+ { 6, "Training" },
+ { 7, "Offline" },
+ { 0, NULL }
+};
+
+static const value_string ehs_primary_header_data_mode[] =
+{
+ { 0, "Unused" },
+ { 1, "Realtime" },
+ { 2, "Dump1" },
+ { 3, "Dump2" },
+ { 4, "Dump3" },
+ { 5, "Playback1" },
+ { 6, "Playback2" },
+ { 7, "Playback3" },
+ { 8, "Playback4" },
+ { 9, "Playback5" },
+ { 10, "Playback6" },
+ { 11, "Playback7" },
+ { 12, "Playback8" },
+ { 13, "Playback9" },
+ { 14, "Playback10" },
+ { 15, "Playback11" },
+ { 16, "Mode Independent" },
+ { 0, NULL }
+};
+
+static const value_string ehs_primary_header_protocol[] =
+{
+ { 0, "All" },
+ { 1, "TDM" },
+ { 2, "NASCOM" },
+ { 3, "PSEUDO" },
+ { 4, "Time" },
+ { 5, "Test" },
+ { 6, "GSE" },
+ { 7, "Custom_Data" },
+ { 8, "HDRS_DQ" },
+ { 9, "CSS" },
+ { 10, "AOS_LOS" },
+ { 11, "PDSS_PAYLOAD_CCSDS" },
+ { 12, "PDSS_CORE_CCSDS" },
+ { 13, "PDSS_PAYLOAD_BPDU" },
+ { 14, "PDSS_UDSM" },
+ { 15, "PDSS_RPSM" },
+ { 0, NULL }
+};
+
+static const value_string ehs_secondary_header_data_stream_id[] =
+{
+ { 0, "CCSDS" },
+ { 1, "BPDU" },
+ { 0, NULL }
+};
+
+static const value_string ehs_secondary_header_payload_vs_core_id[] =
+{
+ { 0, "Core" },
+ { 1, "Payload" },
+ { 0, NULL }
+};
+
+static const value_string ehs_secondary_header_tdm_backup_stream_id[] =
+{
+ { 0, "Stream A / KMTS-A" },
+ { 1, "Stream B / KMTS-B" },
+ { 2, "SKR" },
+ { 0, NULL }
+};
+
+static const value_string ehs_secondary_header_tdm_end_of_data_flag[] =
+{
+ { 0, "OK" },
+ { 1, "Loss of Clock" },
+ { 2, "Watchdog Timeout" },
+ { 3, "Loss of Sync" },
+ { 0, NULL }
+};
+
+static const true_false_string ehs_tfs_secondary_header_tdm_aoslos_flag =
+{
+ "AOS" ,
+ "LOS"
+};
+
+static const value_string ehs_secondary_header_tdm_data_status[] =
+{
+ { 0, "OK" },
+ { 1, "Suspect" },
+ { 2, "DQ Failed" },
+ { 3, "No Data" },
+ { 0, NULL }
+};
+
+static const value_string ehs_data_zone_aoslos_indicator[] =
+{
+ { 0, "S-band LOS" },
+ { 1, "S-band AOS" },
+ { 2, "Ku-band LOS" },
+ { 3, "Ku-band AOS" },
+ { 0, NULL }
+};
+
+static const value_string ehs_data_zone_udsm_ccsds_vs_bpdu[] =
+{
+ { 0, "CCSDS" },
+ { 1, "BPDU" },
+ { 0, NULL }
+};
+
+static const value_string ehs_data_zone_udsm_payload_vs_core[] =
+{
+ { 0, "Core" },
+ { 1, "Payload" },
+ { 0, NULL }
+};
+
+static const value_string ehs_data_zone_udsm_event[] =
+{
+ { 0, "Undefined" },
+ { 1, "Actual LOS" },
+ { 2, "Scheduled End of Data" },
+ { 3, "Operator Requested" },
+ { 0, NULL }
+};
+
+
+/* function to return EHS secondary header size according to protocol.
+ * the buffer pointer tvb should be pointing to the packets ehs primary
+ * header, and the offset should be set to the start of the ehs secondary
+ * header on input.
+ */
+static int
+ehs_secondary_header_size ( int protocol, tvbuff_t* tvb, int offset )
+{
+ /* for most protocols the ehs secondary header is a standard size */
+ int size = EHS_SECONDARY_HEADER_SIZE;
+
+ switch ( protocol )
+ {
+ case EHS_PROTOCOL__TDM_TELEMETRY:
+ /* the TDM secondary header size is variable. its value is actually
+ * contained in the first two bytes of the secondary header itself.
+ */
+ size = tvb_get_ntohs ( tvb, offset );
+ break;
+
+ case EHS_PROTOCOL__NASCOM_TELEMETRY:
+ break;
+
+ case EHS_PROTOCOL__PSEUDO_TELEMETRY:
+ size = 8;
+ break;
+
+ case EHS_PROTOCOL__TDS_DATA:
+ break;
+
+ case EHS_PROTOCOL__TEST_DATA:
+ break;
+
+ case EHS_PROTOCOL__GSE_DATA:
+ size = 16;
+ break;
+
+ case EHS_PROTOCOL__CUSTOM_DATA:
+ break;
+
+ case EHS_PROTOCOL__HDRS_DQ:
+ break;
+
+ case EHS_PROTOCOL__CSS:
+ break;
+
+ case EHS_PROTOCOL__AOS_LOS:
+ break;
+
+ case EHS_PROTOCOL__PDSS_PAYLOAD_CCSDS_PACKET:
+ break;
+
+ case EHS_PROTOCOL__PDSS_CORE_CCSDS_PACKET:
+ break;
+
+ case EHS_PROTOCOL__PDSS_PAYLOAD_BPDU:
+ break;
+
+ case EHS_PROTOCOL__PDSS_UDSM:
+ break;
+
+ case EHS_PROTOCOL__PDSS_RPSM:
+ break;
+
+ default:
+ break;
+ }
+
+ return size;
+
+}
+
+
+/* common EHS secondary header dissector */
+static void
+common_secondary_header_dissector ( proto_tree* ehs_secondary_header_tree, tvbuff_t* tvb, int* offset )
+{
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_vcdu_sequence_number, tvb, *offset, 3, ENC_BIG_ENDIAN );
+ *offset += 3;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_stream_id, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ /* proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_pdss_reserved_1, tvb, *offset, 1, ENC_BIG_ENDIAN ); */
+ ++(*offset);
+
+ /* proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_pdss_reserved_2, tvb, *offset, 1, ENC_BIG_ENDIAN ); */
+ ++(*offset);
+
+ /* proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_pdss_reserved_3, tvb, *offset, 2, ENC_BIG_ENDIAN ); */
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_gse_pkt_id, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_payload_vs_core_id, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_apid, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_virtual_channel, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_pdss_reserved_sync, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+}
+
+
+/* AOS/LOS EHS secondary header dissector */
+static void
+aoslos_secondary_header_dissector ( proto_tree* ehs_secondary_header_tree, tvbuff_t* tvb, int* offset )
+{
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_version, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_5, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_4, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_3, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_2, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_1, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_0, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ common_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+}
+
+
+/* payload ccsds secondary header dissector */
+static void
+payload_ccsds_secondary_header_dissector ( proto_tree* ehs_secondary_header_tree, tvbuff_t* tvb, int* offset )
+{
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_version, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_5, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_4, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_3, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_vcdu_sequence_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_packet_sequence_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_0, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ common_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+}
+
+
+/* core ccsds secondary header dissector */
+static void
+core_ccsds_secondary_header_dissector ( proto_tree* ehs_secondary_header_tree, tvbuff_t* tvb, int* offset )
+{
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_version, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_5, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_4, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_parent_stream_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_vcdu_sequence_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_packet_sequence_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_0, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ common_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+}
+
+
+/* payload bpdu secondary header dissector */
+static void
+payload_bpdu_secondary_header_dissector ( proto_tree* ehs_secondary_header_tree, tvbuff_t* tvb, int* offset )
+{
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_version, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_5, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_4, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_3, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_vcdu_sequence_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_1, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_0, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ common_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+}
+
+
+/* udsm secondary header dissector */
+static void
+udsm_secondary_header_dissector ( proto_tree* ehs_secondary_header_tree, tvbuff_t* tvb, int* offset )
+{
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_version, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_5, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_4, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_3, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_2, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_1, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_data_status_bit_0, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ common_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+}
+
+
+/* tdm secondary header dissector */
+static void
+tdm_secondary_header_dissector ( proto_tree* ehs_secondary_header_tree, tvbuff_t* tvb, int* offset )
+{
+ int j;
+ int num_major_frames = 0;
+ int num_minor_frames = 0;
+ int cntmet_present = 0;
+ int obt_present = 0;
+ int mjfs_present = 0;
+
+ proto_tree* time_tree;
+ proto_item* time_item;
+ int year, jday, hour, minute, second, tenths;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_secondary_header_length, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_extra_data_packet, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_backup_stream_id_number, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_end_of_data_flag, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_parent_frame_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_checksum_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_fixed_value_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_minor_frame_counter_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_format_id_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_bit_slip_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_sync_error, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_aoslos_flag, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_override_errors_flag, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_data_status, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_idq, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_cdq, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_adq, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_data_dq, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ /* proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_unused, tvb, *offset, 2, ENC_BIG_ENDIAN ); */
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_format_id, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_major_frame_packet_index, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_numpkts_per_major_frame, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ num_minor_frames = 1 + tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_num_minor_frames_per_packet, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ cntmet_present = tvb_get_guint8 ( tvb, *offset ) & 0x80;
+ obt_present = tvb_get_guint8 ( tvb, *offset ) & 0x40;
+ mjfs_present = tvb_get_guint8 ( tvb, *offset ) & 0x20;
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_cntmet_present, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_obt_present, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_major_frame_status_present, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ /* proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_reserved, tvb, *offset, 1, ENC_BIG_ENDIAN ); */
+ ++(*offset);
+
+ if ( cntmet_present )
+ {
+ time_tree = proto_tree_add_subtree(ehs_secondary_header_tree, tvb, *offset, 7, ett_ehs_cnt_time, &time_item, "CNT/MET Time: ");
+
+ year = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_cnt_year, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ jday = tvb_get_ntohs ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_cnt_jday, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ hour = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_cnt_hour, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ minute = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_cnt_minute, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ second = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_cnt_second, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ tenths = tvb_get_guint8 ( tvb, *offset ) >> 4;
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_cnt_tenths, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ /* format a more readable time */
+ proto_item_append_text(time_item, "%04d/%03d:%02d:%02d:%02d.%1d", year + 1900, jday, hour, minute, second, tenths );
+ }
+
+
+ if ( obt_present )
+ {
+ time_tree = proto_tree_add_subtree(ehs_secondary_header_tree, tvb, *offset, 7, ett_ehs_obt_time, &time_item, "OBT Time: ");
+
+ year = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_obt_year, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ jday = tvb_get_ntohs ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_obt_jday, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ hour = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_obt_hour, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ minute = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_obt_minute, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ second = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_obt_second, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ tenths = tvb_get_guint8 ( tvb, *offset ) >> 4;
+ proto_tree_add_item ( time_tree, hf_ehs_sh_tdm_obt_tenths, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ /* format a more readable time */
+ proto_item_append_text ( time_item, "%04d/%03d:%02d:%02d:%02d.%1d", year + 1900, jday, hour, minute, second, tenths );
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_obt_delta_time_flag, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_obt_computed_flag, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_obt_not_retrieved_flag, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ /* proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_obt_reserved, tvb, *offset, 1, ENC_BIG_ENDIAN ); */
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_obt_source_apid, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ }
+
+ if ( mjfs_present )
+ {
+ num_major_frames = 1 + tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_tdm_num_major_frame_status_words, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ for ( j=0; j < num_major_frames; ++j )
+ {
+ proto_tree* major_tree;
+ static int * const major_fields[] = {
+ /* &hf_ehs_sh_tdm_mjfs_reserved, */
+ &hf_ehs_sh_tdm_mjfs_parent_frame_error,
+ &hf_ehs_sh_tdm_mjfs_checksum_error,
+ &hf_ehs_sh_tdm_mjfs_fixed_value_error,
+ NULL
+ };
+
+ major_tree = proto_tree_add_subtree_format( ehs_secondary_header_tree, tvb, *offset, 1, ett_ehs_major_frame, NULL, "Major Frame Status Byte# %d", j );
+ proto_tree_add_bitmask_list(major_tree, tvb, *offset, 1, major_fields, ENC_BIG_ENDIAN);
+ ++(*offset);
+ }
+ }
+
+ for ( j=0; j < num_minor_frames; ++j )
+ {
+ proto_tree* minor_tree;
+ static int * const minor_fields[] = {
+ &hf_ehs_sh_tdm_mnfs_parent_frame_error,
+ &hf_ehs_sh_tdm_mnfs_data_not_available,
+ &hf_ehs_sh_tdm_mnfs_checksum_error,
+ &hf_ehs_sh_tdm_mnfs_fixed_value_error,
+ &hf_ehs_sh_tdm_mnfs_counter_error,
+ &hf_ehs_sh_tdm_mnfs_format_id_error,
+ &hf_ehs_sh_tdm_mnfs_bit_slip_error,
+ &hf_ehs_sh_tdm_mnfs_sync_error,
+ NULL
+ };
+
+ minor_tree = proto_tree_add_subtree_format( ehs_secondary_header_tree, tvb, *offset, 1, ett_ehs_minor_frame, NULL, "Minor Frame Status Byte# %d", j );
+ proto_tree_add_bitmask_list(minor_tree, tvb, *offset, 1, minor_fields, ENC_BIG_ENDIAN);
+ ++(*offset);
+ }
+
+}
+
+
+/* pseudo secondary header dissector */
+static void
+pseudo_secondary_header_dissector ( proto_tree* ehs_secondary_header_tree, tvbuff_t* tvb, int* offset )
+{
+ /* proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_pseudo_unused, tvb, *offset, 2, ENC_BIG_ENDIAN ); */
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_pseudo_workstation_id, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_pseudo_user_id, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_secondary_header_tree, hf_ehs_sh_pseudo_comp_id, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+}
+
+
+
+
+/* EHS secondary header dissector */
+static void
+ehs_secondary_header_dissector ( int protocol, proto_tree* ehs_secondary_header_tree, tvbuff_t* tvb, int* offset )
+{
+ /* the ehs secondary header structure is potentially different for each and every
+ * protocol type, including its size. we support certain protocols but not all.
+ * for those protocols which are not supported we simply increment the offset
+ * and return. support for these other protocols can easily be added at a later
+ * time if and when it becomes necessary to do so. but for right now, we're only
+ * going to dissect those protocols that we work with on a regular basis in pdss.
+ */
+ switch ( protocol )
+ {
+ case EHS_PROTOCOL__TDM_TELEMETRY:
+ tdm_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+ break;
+
+ case EHS_PROTOCOL__NASCOM_TELEMETRY:
+ *offset += ehs_secondary_header_size ( protocol, tvb, *offset );
+ break;
+
+ case EHS_PROTOCOL__PSEUDO_TELEMETRY:
+ pseudo_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+ break;
+
+ case EHS_PROTOCOL__TDS_DATA:
+ *offset += ehs_secondary_header_size ( protocol, tvb, *offset );
+ break;
+
+ case EHS_PROTOCOL__TEST_DATA:
+ *offset += ehs_secondary_header_size ( protocol, tvb, *offset );
+ break;
+
+ case EHS_PROTOCOL__GSE_DATA:
+ *offset += ehs_secondary_header_size ( protocol, tvb, *offset );
+ break;
+
+ case EHS_PROTOCOL__CUSTOM_DATA:
+ *offset += ehs_secondary_header_size ( protocol, tvb, *offset );
+ break;
+
+ case EHS_PROTOCOL__HDRS_DQ:
+ *offset += ehs_secondary_header_size ( protocol, tvb, *offset );
+ break;
+
+ case EHS_PROTOCOL__CSS:
+ *offset += ehs_secondary_header_size ( protocol, tvb, *offset );
+ break;
+
+ case EHS_PROTOCOL__AOS_LOS:
+ aoslos_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+ break;
+
+ case EHS_PROTOCOL__PDSS_PAYLOAD_CCSDS_PACKET:
+ payload_ccsds_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+ break;
+
+ case EHS_PROTOCOL__PDSS_CORE_CCSDS_PACKET:
+ core_ccsds_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+ break;
+
+ case EHS_PROTOCOL__PDSS_PAYLOAD_BPDU:
+ payload_bpdu_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+ break;
+
+ case EHS_PROTOCOL__PDSS_UDSM:
+ udsm_secondary_header_dissector ( ehs_secondary_header_tree, tvb, offset );
+ break;
+
+ case EHS_PROTOCOL__PDSS_RPSM:
+ *offset += ehs_secondary_header_size ( protocol, tvb, *offset );
+ break;
+
+ default:
+ *offset += ehs_secondary_header_size ( protocol, tvb, *offset );
+ break;
+ }
+}
+
+
+/* AOS/LOS data zone dissector */
+static void
+aoslos_data_zone_dissector ( proto_tree* ehs_tree, tvbuff_t* tvb, int* offset, packet_info* pinfo _U_)
+{
+ proto_tree *ehs_data_zone_tree;
+
+ /* create the data zone tree */
+ ehs_data_zone_tree = proto_tree_add_subtree( ehs_tree, tvb, *offset, tvb_reported_length(tvb) - *offset,
+ ett_ehs_data_zone, NULL, "AOS/LOS Data Zone" );
+
+ /* since the aos/los EHS packet data zone is well known, format it for display as well
+ *
+ * The AOS/LOS packet data zone is only 2 bytes in
+ * length and only 2 bits in the first byte are
+ * meaningful -- Ku band or S band and AOS or LOS
+ *
+ * 7-2 - unused
+ * 1-0 - band + AOS/LOS indicator
+ *
+ * bit 1 - 0=sband 1=kuband
+ * bit 0 - 0=LOS 1=AOS
+ *
+ * 0 00 - sband LOS
+ * 1 01 - sband AOS
+ * 2 10 - kuband LOS
+ * 3 11 - kuband AOS
+ */
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_aoslos_indicator, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+}
+
+
+/* UDSM data zone dissector */
+static void
+udsm_data_zone_dissector ( proto_tree* ehs_tree, tvbuff_t* tvb, int* offset, packet_info* pinfo _U_)
+{
+ proto_tree *ehs_data_zone_tree;
+
+ proto_tree* time_tree;
+ proto_item* time_item;
+ int year, jday, hour, minute, second;
+
+ /* create the data zone tree */
+ ehs_data_zone_tree = proto_tree_add_subtree( ehs_tree, tvb, *offset, tvb_reported_length(tvb) - *offset,
+ ett_ehs_data_zone, NULL, "UDSM Data Zone" );
+
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_ccsds_vs_bpdu, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ /* proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_unused1, tvb, *offset, 1, ENC_BIG_ENDIAN ); */
+ ++(*offset);
+
+ /* proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_unused2, tvb, *offset, 1, ENC_BIG_ENDIAN ); */
+ ++(*offset);
+
+ /* proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_unused3, tvb, *offset, 2, ENC_BIG_ENDIAN ); */
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_gse_pkt_id, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_payload_vs_core, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_apid, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ time_tree = proto_tree_add_subtree(ehs_data_zone_tree, tvb, *offset, 7, ett_ehs_udsm_start_time, &time_item, "UDSM Start Time: ");
+ year = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_dz_udsm_start_time_year, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ jday = tvb_get_ntohs ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_dz_udsm_start_time_jday, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ hour = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_dz_udsm_start_time_hour, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ minute = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_dz_udsm_start_time_minute, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ second = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_dz_udsm_start_time_second, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ /* format a more readable time */
+ proto_item_append_text( time_item, "%04d/%03d:%02d:%02d:%02d = UDSM Start Time", year + 1900, jday, hour, minute, second );
+
+ time_tree = proto_tree_add_subtree(ehs_data_zone_tree, tvb, *offset, 7, ett_ehs_udsm_stop_time, &time_item, "UDSM Stop Time: ");
+ year = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_dz_udsm_stop_time_year, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ jday = tvb_get_ntohs ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_dz_udsm_stop_time_jday, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ hour = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_dz_udsm_stop_time_hour, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ minute = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_dz_udsm_stop_time_minute, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ second = tvb_get_guint8 ( tvb, *offset );
+ proto_tree_add_item ( time_tree, hf_ehs_dz_udsm_stop_time_second, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ /* format a more readable time */
+ proto_item_append_text ( time_item, "%04d/%03d:%02d:%02d:%02d", year + 1900, jday, hour, minute, second );
+
+ /* proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_unused4, tvb, *offset, 2, ENC_BIG_ENDIAN ); */
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_num_pkts_xmtd, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_num_vcdu_seqerrs, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_num_pkt_seqerrs, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_num_pktlen_errors, tvb, *offset, 2, ENC_BIG_ENDIAN );
+ *offset += 2;
+
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_event, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+ proto_tree_add_item ( ehs_data_zone_tree, hf_ehs_dz_udsm_num_pkts_xmtd_rollover, tvb, *offset, 1, ENC_BIG_ENDIAN );
+ ++(*offset);
+
+}
+
+
+/* data zone dissector */
+static void
+ehs_data_zone_dissector ( int protocol, proto_tree* ehs_tree, tvbuff_t* tvb, int* offset, packet_info* pinfo )
+{
+ /* the data zone of certain protocols such as AOS/LOS and UDSM is well known.
+ */
+ switch ( protocol )
+ {
+ case EHS_PROTOCOL__TDM_TELEMETRY:
+ break;
+
+ case EHS_PROTOCOL__NASCOM_TELEMETRY:
+ break;
+
+ case EHS_PROTOCOL__PSEUDO_TELEMETRY:
+ break;
+
+ case EHS_PROTOCOL__TDS_DATA:
+ break;
+
+ case EHS_PROTOCOL__TEST_DATA:
+ break;
+
+ case EHS_PROTOCOL__GSE_DATA:
+ break;
+
+ case EHS_PROTOCOL__CUSTOM_DATA:
+ break;
+
+ case EHS_PROTOCOL__HDRS_DQ:
+ break;
+
+ case EHS_PROTOCOL__CSS:
+ break;
+
+ case EHS_PROTOCOL__AOS_LOS:
+ aoslos_data_zone_dissector ( ehs_tree, tvb, offset, pinfo );
+ break;
+
+ case EHS_PROTOCOL__PDSS_PAYLOAD_CCSDS_PACKET:
+ break;
+
+ case EHS_PROTOCOL__PDSS_CORE_CCSDS_PACKET:
+ break;
+
+ case EHS_PROTOCOL__PDSS_PAYLOAD_BPDU:
+ break;
+
+ case EHS_PROTOCOL__PDSS_UDSM:
+ udsm_data_zone_dissector ( ehs_tree, tvb, offset, pinfo );
+ break;
+
+ case EHS_PROTOCOL__PDSS_RPSM:
+ break;
+
+ default:
+ break;
+ }
+}
+
+
+/* Code to actually dissect the packets */
+static int
+dissect_ehs(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+ int offset = 0;
+ guint16 first_word;
+
+ tvbuff_t *new_tvb;
+
+ proto_item *ehs_packet;
+ proto_tree *ehs_tree;
+
+ proto_tree* time_tree;
+ proto_item* time_item;
+ proto_tree *ehs_primary_header_tree;
+ proto_tree *ehs_secondary_header_tree;
+
+ int protocol;
+ int year, jday, hour, minute, second, tenths;
+
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "EHS");
+ col_set_str(pinfo->cinfo, COL_INFO, "EHS");
+
+ ehs_packet = proto_tree_add_item ( tree, proto_ehs, tvb, 0, -1, ENC_NA );
+ ehs_tree = proto_item_add_subtree ( ehs_packet, ett_ehs );
+
+ /* build the ehs primary header tree */
+ ehs_primary_header_tree = proto_tree_add_subtree( ehs_tree, tvb, offset, EHS_PRIMARY_HEADER_SIZE,
+ ett_ehs_primary_header, NULL, "Primary EHS Header" );
+
+ proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_version, tvb, offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_project, tvb, offset, 1, ENC_BIG_ENDIAN );
+ ++offset;
+
+ proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_support_mode, tvb, offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_data_mode, tvb, offset, 1, ENC_BIG_ENDIAN );
+ ++offset;
+
+ proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_mission, tvb, offset, 1, ENC_BIG_ENDIAN );
+ ++offset;
+
+ /* save protocol for use later on */
+ protocol = tvb_get_guint8 ( tvb, offset );
+ proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_protocol, tvb, offset, 1, ENC_BIG_ENDIAN );
+ ++offset;
+
+ time_tree = proto_tree_add_subtree(ehs_primary_header_tree, tvb, offset, 7, ett_ehs_ground_receipt_time, &time_item, "EHS Ground Receipt Time: ");
+ year = tvb_get_guint8 ( tvb, offset );
+ proto_tree_add_item ( time_tree, hf_ehs_ph_year, tvb, offset, 1, ENC_BIG_ENDIAN );
+ ++offset;
+
+ jday = tvb_get_ntohs ( tvb, offset );
+ proto_tree_add_item ( time_tree, hf_ehs_ph_jday, tvb, offset, 2, ENC_BIG_ENDIAN );
+ offset += 2;
+
+ hour = tvb_get_guint8 ( tvb, offset );
+ proto_tree_add_item ( time_tree, hf_ehs_ph_hour, tvb, offset, 1, ENC_BIG_ENDIAN );
+ ++offset;
+
+ minute = tvb_get_guint8 ( tvb, offset );
+ proto_tree_add_item ( time_tree, hf_ehs_ph_minute, tvb, offset, 1, ENC_BIG_ENDIAN );
+ ++offset;
+
+ second = tvb_get_guint8 ( tvb, offset );
+ proto_tree_add_item ( time_tree, hf_ehs_ph_second, tvb, offset, 1, ENC_BIG_ENDIAN );
+ ++offset;
+
+ tenths = tvb_get_guint8 ( tvb, offset ) >> 4;
+ proto_tree_add_item ( time_tree, hf_ehs_ph_tenths, tvb, offset, 1, ENC_BIG_ENDIAN );
+
+ /* format a more readable ground receipt time string */
+ proto_item_append_text ( time_item, "%04d/%03d:%02d:%02d:%02d.%1d", year + 1900, jday, hour, minute, second, tenths );
+
+ proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_new_data_flag, tvb, offset, 1, ENC_BIG_ENDIAN );
+ /* proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_pad1, tvb, offset, 1, ENC_BIG_ENDIAN ); */
+ proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_hold_flag, tvb, offset, 1, ENC_BIG_ENDIAN );
+ proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_sign_flag, tvb, offset, 1, ENC_BIG_ENDIAN );
+ ++offset;
+
+ /* proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_pad2, tvb, offset, 1, ENC_BIG_ENDIAN ); */
+ ++offset;
+ /* proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_pad3, tvb, offset, 1, ENC_BIG_ENDIAN ); */
+ ++offset;
+ /* proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_pad4, tvb, offset, 1, ENC_BIG_ENDIAN ); */
+ ++offset;
+
+ proto_tree_add_item ( ehs_primary_header_tree, hf_ehs_ph_hosc_packet_size, tvb, offset, 2, ENC_BIG_ENDIAN );
+ offset += 2;
+
+ /* build the ehs secondary header tree */
+ ehs_secondary_header_tree = proto_tree_add_subtree( ehs_tree, tvb, offset, ehs_secondary_header_size ( protocol, tvb, offset ),
+ ett_ehs_secondary_header, NULL, "Secondary EHS Header" );
+
+ /* since each protocol can have a different ehs secondary header structure, we will offload
+ * this processing to lower levels of code so we don't have to insert all of that complexity
+ * directly inline here, which would no doubt make this difficult to read at best.
+ */
+ ehs_secondary_header_dissector ( protocol, ehs_secondary_header_tree, tvb, &offset );
+
+ /* for ccsds protocol types pass the remaining packet off to the ccsds packet dissector */
+ switch ( protocol )
+ {
+ case EHS_PROTOCOL__TDM_TELEMETRY:
+ case EHS_PROTOCOL__PSEUDO_TELEMETRY:
+ case EHS_PROTOCOL__AOS_LOS:
+ case EHS_PROTOCOL__PDSS_PAYLOAD_CCSDS_PACKET:
+ case EHS_PROTOCOL__PDSS_CORE_CCSDS_PACKET:
+ case EHS_PROTOCOL__PDSS_UDSM:
+ new_tvb = tvb_new_subset_remaining ( tvb, offset);
+ call_dissector ( ccsds_handle, new_tvb, pinfo, ehs_tree );
+
+ /* bump the offset to the data zone area */
+ first_word = tvb_get_ntohs ( tvb, offset );
+
+ offset += CCSDS_PRIMARY_HEADER_LENGTH;
+ if ( first_word & HDR_SECHDR ) offset += CCSDS_SECONDARY_HEADER_LENGTH;
+ break;
+
+
+ default:
+ break;
+ }
+
+ /* build the ehs data zone tree for well known protocols such as AOS/LOS and UDSM */
+ ehs_data_zone_dissector ( protocol, ehs_tree, tvb, &offset, pinfo );
+
+ return tvb_captured_length(tvb);
+}
+
+
+/* Register the protocol with Wireshark
+ * this format is require because a script is used to build the C function
+ * that calls all the protocol registration.
+ */
+void
+proto_register_ehs(void)
+{
+ /* Setup list of header fields See Section 1.6.1 for details*/
+ static hf_register_info hf[] =
+ {
+ /* primary ehs header */
+ { &hf_ehs_ph_version,
+ { "Version", "ehs.version",
+ FT_UINT8, BASE_DEC, NULL, 0xf0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_ph_project,
+ { "Project", "ehs.project",
+ FT_UINT8, BASE_DEC, VALS(ehs_primary_header_project), 0x0f,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_support_mode,
+ { "Support Mode", "ehs.support_mode",
+ FT_UINT8, BASE_DEC, VALS(ehs_primary_header_support_mode), 0xf0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_ph_data_mode,
+ { "Data Mode", "ehs.data_mode",
+ FT_UINT8, BASE_DEC, VALS(ehs_primary_header_data_mode), 0x0f,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_mission,
+ { "Mission", "ehs.mission",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_protocol,
+ { "Protocol", "ehs.protocol",
+ FT_UINT8, BASE_DEC, VALS(ehs_primary_header_protocol), 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_year,
+ { "Years since 1900", "ehs.year",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_jday,
+ { "Julian Day of Year", "ehs.jday",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_hour,
+ { "Hour", "ehs.hour",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_minute,
+ { "Minute", "ehs.minute",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_second,
+ { "Second", "ehs.second",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_tenths,
+ { "Tenths", "ehs.tenths",
+ FT_UINT8, BASE_DEC, NULL, 0xf0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_ph_new_data_flag,
+ { "New Data Flag", "ehs.new_data_flag",
+ FT_BOOLEAN, 8, NULL, 0x08,
+ NULL, HFILL }
+ },
+#if 0
+ { &hf_ehs_ph_pad1,
+ { "Pad1", "ehs.pad1",
+ FT_UINT8, BASE_DEC, NULL, 0x04,
+ NULL, HFILL }
+ },
+#endif
+ { &hf_ehs_ph_hold_flag,
+ { "Hold Flag", "ehs.hold_flag",
+ FT_BOOLEAN, 8, NULL, 0x02,
+ NULL, HFILL }
+ },
+ { &hf_ehs_ph_sign_flag,
+ { "Sign Flag (1->CDT)", "ehs.sign_flag",
+ FT_UINT8, BASE_DEC, NULL, 0x01,
+ NULL, HFILL }
+ },
+
+#if 0
+ { &hf_ehs_ph_pad2,
+ { "Pad2", "ehs.pad2",
+ FT_UINT8, BASE_DEC, NULL, 0xff,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_pad3,
+ { "Pad3", "ehs.pad3",
+ FT_UINT8, BASE_DEC, NULL, 0xff,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_ph_pad4,
+ { "Pad4", "ehs.pad4",
+ FT_UINT8, BASE_DEC, NULL, 0xff,
+ NULL, HFILL }
+ },
+#endif
+
+ { &hf_ehs_ph_hosc_packet_size,
+ { "HOSC Packet Size", "ehs.hosc_packet_size",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+
+ /* secondary ehs header */
+ { &hf_ehs_sh_version,
+ { "Version", "ehs2.version",
+ FT_UINT8, BASE_DEC, NULL, 0xc0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_data_status_bit_5,
+ { "Data Status Bit 5", "ehs2.data_status_bit_5",
+ FT_UINT8, BASE_DEC, NULL, 0x20,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_data_status_bit_4,
+ { "Data Status Bit 4", "ehs2.data_status_bit_4",
+ FT_UINT8, BASE_DEC, NULL, 0x10,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_data_status_bit_3,
+ { "Data Status Bit 3", "ehs2.data_status_bit_3",
+ FT_UINT8, BASE_DEC, NULL, 0x08,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_data_status_bit_2,
+ { "Data Status Bit 2", "ehs2.data_status_bit_2",
+ FT_UINT8, BASE_DEC, NULL, 0x04,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_data_status_bit_1,
+ { "Data Status Bit 1", "ehs2.data_status_bit_1",
+ FT_UINT8, BASE_DEC, NULL, 0x02,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_data_status_bit_0,
+ { "Data Status Bit 0", "ehs2.data_status_bit_0",
+ FT_UINT8, BASE_DEC, NULL, 0x01,
+ NULL, HFILL }
+ },
+
+
+ /* other common remappings of the data status bits specific to certain secondary ehs header values */
+ { &hf_ehs_sh_parent_stream_error,
+ { "Parent Stream Error", "ehs2.parent_stream_error",
+ FT_BOOLEAN, 8, NULL, 0x08,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_vcdu_sequence_error,
+ { "VCDU Sequence Error", "ehs2.vcdu_sequence_error",
+ FT_BOOLEAN, 8, NULL, 0x04,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_packet_sequence_error,
+ { "Packet Sequence Error", "ehs2.packet_sequence_error",
+ FT_UINT8, BASE_DEC, NULL, 0x02,
+ NULL, HFILL }
+ },
+
+
+ /* common ehs secondary header values */
+ { &hf_ehs_sh_vcdu_sequence_number,
+ { "VCDU Sequence Number", "ehs2.vcdu_seqno",
+ FT_UINT24, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_data_stream_id,
+ { "Data Stream ID", "ehs2.data_stream_id",
+ FT_UINT8, BASE_DEC, VALS(ehs_secondary_header_data_stream_id), 0x80,
+ NULL, HFILL }
+ },
+#if 0
+ { &hf_ehs_sh_pdss_reserved_1,
+ { "Pdss Reserved 1", "ehs2.pdss_reserved_1",
+ FT_UINT8, BASE_DEC, NULL, 0x7f,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_pdss_reserved_2,
+ { "Pdss Reserved 2", "ehs2.pdss_reserved_2",
+ FT_UINT8, BASE_DEC, NULL, 0xff,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_pdss_reserved_3,
+ { "Pdss Reserved 3", "ehs2.pdss_reserved_3",
+ FT_UINT16, BASE_DEC, NULL, 0xe000,
+ NULL, HFILL }
+ },
+#endif
+ { &hf_ehs_sh_gse_pkt_id,
+ { "GSE Packet ID (1=GSE)", "ehs2.gse_pkt_id",
+ FT_UINT16, BASE_DEC, NULL, 0x1000,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_payload_vs_core_id,
+ { "Payload vs Core ID", "ehs2.payload_vs_core_id",
+ FT_UINT16, BASE_DEC, VALS(ehs_secondary_header_payload_vs_core_id), 0x0800,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_apid,
+ { "APID", "ehs2.apid",
+ FT_UINT16, BASE_DEC, NULL, 0x07ff,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_virtual_channel,
+ { "Virtual Channel", "ehs2.vcid",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_pdss_reserved_sync,
+ { "Pdss Reserved Sync", "ehs2.sync",
+ FT_UINT16, BASE_HEX, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+
+ /* tdm ehs secondary header values */
+ { &hf_ehs_sh_tdm_secondary_header_length,
+ { "Secondary Header Length", "ehs2.tdm_secondary_header_length",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_extra_data_packet,
+ { "Extra Data Packet", "ehs2.tdm_extra_data_packet",
+ FT_BOOLEAN, 8, NULL, 0x80,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_backup_stream_id_number,
+ { "Backup Stream ID Number", "ehs2.tdm_backup_stream_id_number",
+ FT_UINT8, BASE_DEC, VALS(ehs_secondary_header_tdm_backup_stream_id), 0x60,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_end_of_data_flag,
+ { "End of Data Flag", "ehs2.tdm_end_of_data_flag",
+ FT_UINT8, BASE_DEC, VALS(ehs_secondary_header_tdm_end_of_data_flag), 0x18,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_parent_frame_error,
+ { "Parent Frame Error", "ehs2.tdm_parent_frame_error",
+ FT_BOOLEAN, 8, NULL, 0x04,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_checksum_error,
+ { "Checksum Error", "ehs2.tdm_checksum_error",
+ FT_BOOLEAN, 8, NULL, 0x02,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_fixed_value_error,
+ { "Fixed Value Error", "ehs2.tdm_fixed_value_error",
+ FT_BOOLEAN, 8, NULL, 0x01,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_minor_frame_counter_error,
+ { "Minor Frame Counter Error", "ehs2.tdm_minor_frame_counter_error",
+ FT_BOOLEAN, 8, NULL, 0x80,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_format_id_error,
+ { "Format ID Error", "ehs2.tdm_format_id_error",
+ FT_BOOLEAN, 8, NULL, 0x40,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_bit_slip_error,
+ { "Bit Slip Error", "ehs2.tdm_bit_slip_error",
+ FT_BOOLEAN, 8, NULL, 0x20,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_sync_error,
+ { "Sync Error", "ehs2.tdm_sync_error",
+ FT_BOOLEAN, 8, NULL, 0x10,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_aoslos_flag,
+ { "AOS/LOS Flag", "ehs2.tdm_aoslos_flag",
+ FT_BOOLEAN, 8, TFS(&ehs_tfs_secondary_header_tdm_aoslos_flag), 0x08,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_override_errors_flag,
+ { "Override Errors", "ehs2.tdm_override_errors_flag",
+ FT_BOOLEAN, 8, NULL, 0x04,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_data_status,
+ { "Data Status", "ehs2.tdm_data_status",
+ FT_UINT8, BASE_DEC, VALS(ehs_secondary_header_tdm_data_status), 0x03,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_idq,
+ { "IDQ", "ehs2.tdm_idq",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_cdq,
+ { "CDQ", "ehs2.tdm_cdq",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_adq,
+ { "ADQ", "ehs2.tdm_adq",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_data_dq,
+ { "Data DQ", "ehs2.tdm_data_dq",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+#if 0
+ { &hf_ehs_sh_tdm_unused,
+ { "Unused", "ehs2.tdm_unused",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+#endif
+
+ { &hf_ehs_sh_tdm_format_id,
+ { "Format ID", "ehs2.tdm_format_id",
+ FT_UINT16, BASE_HEX, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_major_frame_packet_index,
+ { "Major Frame Packet Index", "ehs2.tdm_major_frame_packet_index",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_numpkts_per_major_frame,
+ { "Num Packets per Major Frame", "ehs2.tdm_numpkts_per_major_frame",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_num_minor_frames_per_packet,
+ { "Num Minor Frames per Packet", "ehs2.tdm_num_minor_frame_per_packet",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_cntmet_present,
+ { "CNT or MET Present", "ehs2.tdm_cntmet_present",
+ FT_BOOLEAN, 8, NULL, 0x80,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_obt_present,
+ { "OBT Present", "ehs2.tdm_obt_present",
+ FT_BOOLEAN, 8, NULL, 0x40,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_major_frame_status_present,
+ { "Major Frame Status Present", "ehs2.tdm_major_frame_status_present",
+ FT_BOOLEAN, 8, NULL, 0x20,
+ NULL, HFILL }
+ },
+#if 0
+ { &hf_ehs_sh_tdm_reserved,
+ { "Reserved", "ehs2.tdm_reserved",
+ FT_UINT8, BASE_DEC, NULL, 0x1f,
+ NULL, HFILL }
+ },
+#endif
+
+ { &hf_ehs_sh_tdm_cnt_year,
+ { "CNT Years since 1900", "ehs2.tdm_cnt_year",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_cnt_jday,
+ { "CNT Julian Day of Year", "ehs2.tdm_cnt_jday",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_cnt_hour,
+ { "CNT Hour", "ehs2.tdm_cnt_hour",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_cnt_minute,
+ { "CNT Minute", "ehs2.tdm_cnt_minute",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_cnt_second,
+ { "CNT Second", "ehs2.tdm_cnt_second",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_cnt_tenths,
+ { "CNT Tenths", "ehs2.tdm_cnt_tenths",
+ FT_UINT8, BASE_DEC, NULL, 0xf0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_obt_year,
+ { "OBT Years since 1900", "ehs2.tdm_cnt_year",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_obt_jday,
+ { "OBT Julian Day of Year", "ehs2.tdm_cnt_jday",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_obt_hour,
+ { "OBT Hour", "ehs2.tdm_cnt_hour",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_obt_minute,
+ { "OBT Minute", "ehs2.tdm_cnt_minute",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_obt_second,
+ { "OBT Second", "ehs2.tdm_cnt_second",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_obt_tenths,
+ { "OBT Tenths", "ehs2.tdm_cnt_tenths",
+ FT_UINT8, BASE_DEC, NULL, 0xf0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_obt_delta_time_flag,
+ { "OBT is Delta Time Instead of GMT", "ehs2.tdm_obt_delta_time_flag",
+ FT_BOOLEAN, 16, NULL, 0x8000,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_obt_computed_flag,
+ { "OBT Computed", "ehs2.tdm_obt_computed_flag",
+ FT_BOOLEAN, 16, NULL, 0x4000,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_obt_not_retrieved_flag,
+ { "OBT Not Retrieved", "ehs2.tdm_obt_not_retrieved_flag",
+ FT_BOOLEAN, 16, NULL, 0x2000,
+ NULL, HFILL }
+ },
+#if 0
+ { &hf_ehs_sh_tdm_obt_reserved,
+ { "OBT Reserved", "ehs2.tdm_obt_reserved",
+ FT_BOOLEAN, 16, NULL, 0x1800,
+ NULL, HFILL }
+ },
+#endif
+ { &hf_ehs_sh_tdm_obt_source_apid,
+ { "OBT Source APID", "ehs2.tdm_obt_source_apid",
+ FT_UINT16, BASE_DEC, NULL, 0x07ff,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_num_major_frame_status_words,
+ { "Number of Major Frame Status Words", "ehs2.tdm_num_major_frame_status_words",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+#if 0
+ { &hf_ehs_sh_tdm_mjfs_reserved,
+ { "Reserved", "ehs2.tdm_mjfs_reserved",
+ FT_UINT8, BASE_DEC, NULL, 0xf8,
+ NULL, HFILL }
+ },
+#endif
+ { &hf_ehs_sh_tdm_mjfs_parent_frame_error,
+ { "Parent Frame Error", "ehs2.tdm_mjfs_parent_frame_error",
+ FT_BOOLEAN, 8, NULL, 0x04,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_mjfs_checksum_error,
+ { "Checksum Error", "ehs2.tdm_mjfs_checksum_error",
+ FT_BOOLEAN, 8, NULL, 0x02,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_mjfs_fixed_value_error,
+ { "Fixed Value Error", "ehs2.tdm_mjfs_fixed_value_error",
+ FT_BOOLEAN, 8, NULL, 0x01,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_sh_tdm_mnfs_parent_frame_error,
+ { "Parent Frame Error", "ehs2.tdm_mnfs_parent_frame_error",
+ FT_BOOLEAN, 8, NULL, 0x80,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_mnfs_data_not_available,
+ { "Data Not Available", "ehs2.tdm_mnfs_data_not_available",
+ FT_BOOLEAN, 8, NULL, 0x40,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_mnfs_checksum_error,
+ { "Checksum Error", "ehs2.tdm_mnfs_checksum_error",
+ FT_BOOLEAN, 8, NULL, 0x20,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_mnfs_fixed_value_error,
+ { "Fixed Value Error", "ehs2.tdm_mnfs_fixed_value_error",
+ FT_BOOLEAN, 8, NULL, 0x10,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_mnfs_counter_error,
+ { "Counter Error", "ehs2.tdm_mnfs_counter_error",
+ FT_BOOLEAN, 8, NULL, 0x08,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_mnfs_format_id_error,
+ { "Format ID Error", "ehs2.tdm_mnfs_format_id_error",
+ FT_BOOLEAN, 8, NULL, 0x04,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_mnfs_bit_slip_error,
+ { "Bit Slip Error", "ehs2.tdm_mnfs_bit_slip_error",
+ FT_BOOLEAN, 8, NULL, 0x02,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_tdm_mnfs_sync_error,
+ { "Sync Error", "ehs2.tdm_mnfs_sync_error",
+ FT_BOOLEAN, 8, NULL, 0x01,
+ NULL, HFILL }
+ },
+
+
+ /* pseudo secondary header */
+#if 0
+ { &hf_ehs_sh_pseudo_unused,
+ { "Unused", "ehs2.pseudo_unused",
+ FT_UINT16, BASE_DEC, NULL, 0xffff,
+ NULL, HFILL }
+ },
+#endif
+ { &hf_ehs_sh_pseudo_workstation_id,
+ { "Workstation ID", "ehs2.pseudo_workstation_id",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_pseudo_user_id,
+ { "User ID", "ehs2.pseudo_user_id",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_sh_pseudo_comp_id,
+ { "Comp ID", "ehs2.pseudo_comp_id",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+
+ /* aos/los protocol data zone */
+ { &hf_ehs_dz_aoslos_indicator,
+ { "AOS/LOS Indicator", "ehs.dz.aoslos_indicator",
+ FT_UINT8, BASE_DEC, VALS(ehs_data_zone_aoslos_indicator), 0x03,
+ NULL, HFILL }
+ },
+
+
+ /* udsm protocol data zone */
+ { &hf_ehs_dz_udsm_ccsds_vs_bpdu,
+ { "CCSDS vs BPDU", "ehs.dz.udsm_ccsds_vs_bpdu",
+ FT_UINT8, BASE_DEC, VALS(ehs_data_zone_udsm_ccsds_vs_bpdu), 0x80,
+ NULL, HFILL }
+ },
+#if 0
+ { &hf_ehs_dz_udsm_unused1,
+ { "Unused 1", "ehs.dz.udsm_unused1",
+ FT_UINT8, BASE_DEC, NULL, 0x7f,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_dz_udsm_unused2,
+ { "Unused 2", "ehs.dz.udsm_unused2",
+ FT_UINT8, BASE_DEC, NULL, 0xff,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_dz_udsm_unused3,
+ { "Unused 3", "ehs.dz.udsm_unused3",
+ FT_UINT16, BASE_DEC, NULL, 0xe000,
+ NULL, HFILL }
+ },
+#endif
+ { &hf_ehs_dz_udsm_gse_pkt_id,
+ { "GSE Pkt ID", "ehs.dz.udsm_gse_pkt_id",
+ FT_BOOLEAN, 16, NULL, 0x1000,
+ NULL, HFILL }
+ },
+ { &hf_ehs_dz_udsm_payload_vs_core,
+ { "Payload vs Core", "ehs.dz.udsm_payload_vs_core",
+ FT_UINT16, BASE_DEC, VALS(ehs_data_zone_udsm_payload_vs_core), 0x0800,
+ NULL, HFILL }
+ },
+ { &hf_ehs_dz_udsm_apid,
+ { "APID", "ehs.dz.udsm_apid",
+ FT_UINT16, BASE_DEC, NULL, 0x07ff,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_dz_udsm_start_time_year,
+ { "Start Time Years since 1900", "ehs.dz.udsm_start_time_year",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_dz_udsm_start_time_jday,
+ { "Start Time Julian Day", "ehs.dz.udsm_start_time_jday",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_dz_udsm_start_time_hour,
+ { "Start Time Hour", "ehs.dz.udsm_start_time_hour",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_dz_udsm_start_time_minute,
+ { "Start Time Minute", "ehs.dz.udsm_start_time_minute",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_dz_udsm_start_time_second,
+ { "Start Time Second", "ehs.dz.udsm_start_time_second",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_dz_udsm_stop_time_year,
+ { "Stop Time Years since 1900", "ehs.dz.udsm_stop_time_year",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_dz_udsm_stop_time_jday,
+ { "Stop Time Julian Day", "ehs.dz.udsm_stop_time_jday",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_dz_udsm_stop_time_hour,
+ { "Stop Time Hour", "ehs.dz.udsm_stop_time_hour",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_dz_udsm_stop_time_minute,
+ { "Stop Time Minute", "ehs.dz.udsm_stop_time_minute",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+ { &hf_ehs_dz_udsm_stop_time_second,
+ { "Stop Time Second", "ehs.dz.udsm_stop_time_second",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+#if 0
+ { &hf_ehs_dz_udsm_unused4,
+ { "Unused 4", "ehs.dz.udsm_unused4",
+ FT_UINT16, BASE_DEC, NULL, 0xffff,
+ NULL, HFILL }
+ },
+#endif
+
+ { &hf_ehs_dz_udsm_num_pkts_xmtd,
+ { "Num Pkts Transmitted", "ehs.dz.udsm_num_pkts_xmtd",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_dz_udsm_num_vcdu_seqerrs,
+ { "Num VCDU Sequence Errors", "ehs.dz.udsm_num_vcdu_seqerrs",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_dz_udsm_num_pkt_seqerrs,
+ { "Num Packet Sequence Errors", "ehs.dz.udsm_num_pkt_seqerrs",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_dz_udsm_num_pktlen_errors,
+ { "Num Pkt Length Errors", "ehs.dz.udsm_num_pktlen_errors",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_dz_udsm_event,
+ { "UDSM Event Code", "ehs.dz.udsm_event",
+ FT_UINT8, BASE_DEC, VALS(ehs_data_zone_udsm_event), 0x0,
+ NULL, HFILL }
+ },
+
+ { &hf_ehs_dz_udsm_num_pkts_xmtd_rollover,
+ { "Num Pkts Transmitted Rollover Counter", "ehs.dz.udsm_num_pkts_xmtd_rollover",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ NULL, HFILL }
+ },
+
+ };
+
+ /* Setup protocol subtree array */
+ static gint *ett[] = {
+ &ett_ehs,
+ &ett_ehs_primary_header,
+ &ett_ehs_secondary_header,
+ &ett_ehs_data_zone,
+ &ett_ehs_cnt_time,
+ &ett_ehs_obt_time,
+ &ett_ehs_udsm_start_time,
+ &ett_ehs_udsm_stop_time,
+ &ett_ehs_ground_receipt_time,
+ &ett_ehs_major_frame,
+ &ett_ehs_minor_frame,
+ };
+
+ /* Register the protocol name and description */
+ proto_ehs = proto_register_protocol("EHS", "EHS", "ehs");
+
+ /* Required function calls to register the header fields and subtrees used */
+ proto_register_field_array(proto_ehs, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+
+ /* XX: Does this dissector need to be publicly registered ?? */
+ ehs_handle = register_dissector ( "ehs", dissect_ehs, proto_ehs );
+}
+
+void
+proto_reg_handoff_ehs(void)
+{
+ dissector_add_for_decode_as_with_preference( "udp.port", ehs_handle );
+ ccsds_handle = find_dissector_add_dependency ( "ccsds", proto_ehs );
+}
+
+/*
+ * Editor modelines - https://www.wireshark.org/tools/modelines.html
+ *
+ * Local Variables:
+ * c-basic-offset: 2
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set shiftwidth=2 tabstop=8 expandtab:
+ * :indentSize=2:tabSize=8:noTabs=true:
+ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 16:25:48 +0000