forked from osmocom/wireshark
2323 lines
74 KiB
C
2323 lines
74 KiB
C
/* packet-ansi_801.c
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* Routines for ANSI IS-801 (Location Services (PLD)) dissection
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*
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* Location Services (Position Determination Service)
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* 3GPP2 C.S0022-0 v1.0 IS-801
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*
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* Location Services (Position Determination Service)
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* 3GPP2 C.S0022-0-1 v1.0 IS-801 Addendum
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*
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* Copyright 2004, Michael Lum <mlum [AT] telostech.com>
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* In association with Telos Technology Inc.
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* Copyright 2007, Michael Lum <michael.lum [AT] utstar.com>
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* In association with UTStarcom Inc.
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <math.h>
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#include <epan/packet.h>
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#include <epan/expert.h>
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void proto_register_ansi_801(void);
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void proto_reg_handoff_ansi_801(void);
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static const char *ansi_proto_name = "ANSI IS-801 (Location Services (PLD))";
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static const char *ansi_proto_name_short = "IS-801";
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#define ANSI_801_FORWARD 0
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#define ANSI_801_REVERSE 1
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/* Initialize the subtree pointers */
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static gint ett_ansi_801 = -1;
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static gint ett_gps = -1;
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static gint ett_loc = -1;
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/* Initialize the protocol and registered fields */
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static int proto_ansi_801 = -1;
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static int hf_ansi_801_for_req_type = -1;
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static int hf_ansi_801_for_rsp_type = -1;
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static int hf_ansi_801_rev_req_type = -1;
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static int hf_ansi_801_rev_rsp_type = -1;
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static int hf_ansi_801_for_sess_tag = -1;
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static int hf_ansi_801_rev_sess_tag = -1;
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static int hf_ansi_801_sess_tag = -1;
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static int hf_ansi_801_time_ref_cdma = -1;
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static int hf_ansi_801_lat = -1;
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static int hf_ansi_801_long = -1;
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static int hf_ansi_801_loc_uncrtnty_ang = -1;
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static int hf_ansi_801_loc_uncrtnty_a = -1;
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static int hf_ansi_801_loc_uncrtnty_p = -1;
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static int hf_ansi_801_fix_type = -1;
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static int hf_ansi_801_velocity_incl = -1;
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static int hf_ansi_801_velocity_hor = -1;
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static int hf_ansi_801_heading = -1;
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static int hf_ansi_801_velocity_ver = -1;
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static int hf_ansi_801_clock_incl = -1;
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static int hf_ansi_801_clock_bias = -1;
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static int hf_ansi_801_clock_drift = -1;
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static int hf_ansi_801_height_incl = -1;
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static int hf_ansi_801_height = -1;
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static int hf_ansi_801_loc_uncrtnty_v = -1;
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static int hf_ansi_801_reserved_bits = -1;
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static int hf_ansi_801_bad_sv_present = -1;
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static int hf_ansi_801_num_bad_sv = -1;
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static int hf_ansi_801_bad_sv_prn_num = -1;
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static int hf_ansi_801_dopp_req = -1;
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static int hf_ansi_801_add_dopp_req = -1;
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static int hf_ansi_801_code_ph_par_req = -1;
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static int hf_ansi_801_az_el_req = -1;
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static int hf_ansi_801_pref_resp_qual = -1;
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static int hf_ansi_801_num_fixes = -1;
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static int hf_ansi_801_t_betw_fixes = -1;
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static int hf_ansi_801_offset_req = -1;
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/* Generated from convert_proto_tree_add_text.pl */
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static int hf_ansi_801_for_message_number_responsesF0 = -1;
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static int hf_ansi_801_apdc_id = -1;
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static int hf_ansi_801_num_sv_p32 = -1;
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static int hf_ansi_801_regulatory_services_indicator = -1;
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static int hf_ansi_801_session_source = -1;
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static int hf_ansi_801_reserved8_E0 = -1;
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static int hf_ansi_801_action_time = -1;
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static int hf_ansi_801_rev_message_number_responsesF0 = -1;
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static int hf_ansi_801_reserved24_3 = -1;
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static int hf_ansi_801_cancellation_type = -1;
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static int hf_ansi_801_gps_navigation_message_bits = -1;
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static int hf_ansi_801_num_dr_p = -1;
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static int hf_ansi_801_rev_message_number_requests8 = -1;
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static int hf_ansi_801_reserved8_F0 = -1;
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static int hf_ansi_801_for_req_loc_clock_correction_for_gps_time = -1;
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static int hf_ansi_801_for_response_length = -1;
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static int hf_ansi_801_session_end = -1;
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static int hf_ansi_801_reserved8_1F = -1;
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static int hf_ansi_801_part_num = -1;
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static int hf_ansi_801_dr_size = -1;
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static int hf_ansi_801_reserved_24_700 = -1;
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static int hf_ansi_801_for_message_number_responses0F = -1;
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static int hf_ansi_801_rev_message_number_requests16 = -1;
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static int hf_ansi_801_lcc_capable_using_location_assistance_spherical = -1;
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static int hf_ansi_801_part_num32 = -1;
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static int hf_ansi_801_part_num16 = -1;
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static int hf_ansi_801_reserved8_07 = -1;
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static int hf_ansi_801_reserved24_1 = -1;
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static int hf_ansi_801_reserved_24_F80000 = -1;
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static int hf_ansi_801_extended_base_station_almanac = -1;
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static int hf_ansi_801_no_outstanding_request_element = -1;
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static int hf_ansi_801_for_request_length = -1;
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static int hf_ansi_801_week_num = -1;
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static int hf_ansi_801_total_parts16 = -1;
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static int hf_ansi_801_pd_message_type = -1;
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static int hf_ansi_801_total_parts32 = -1;
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static int hf_ansi_801_alpha_and_beta_parameters = -1;
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static int hf_ansi_801_lcc_using_gps_ephemeris_assistance = -1;
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static int hf_ansi_801_rev_request_length = -1;
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static int hf_ansi_801_reserved8_7F = -1;
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static int hf_ansi_801_unsolicited_response_indicator = -1;
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static int hf_ansi_801_autonomous_location_calculation_capable = -1;
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static int hf_ansi_801_gps_almanac_correction = -1;
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static int hf_ansi_801_total_parts = -1;
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static int hf_ansi_801_session_start = -1;
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static int hf_ansi_801_ref_bit_num = -1;
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static int hf_ansi_801_aflt_lcc = -1;
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static int hf_ansi_801_reject_reason = -1;
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static int hf_ansi_801_gps_ephemeris = -1;
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static int hf_ansi_801_pre_programmed_location = -1;
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static int hf_ansi_801_rev_response_length = -1;
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static int hf_ansi_801_afltc_id = -1;
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static int hf_ansi_801_rev_req_loc_height_information = -1;
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static int hf_ansi_801_reserved8_01 = -1;
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static int hf_ansi_801_pilot_ph_cap = -1;
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static int hf_ansi_801_gps_acquisition_assistance = -1;
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static int hf_ansi_801_coordinate_type_requested = -1;
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static int hf_ansi_801_gps_almanac = -1;
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static int hf_ansi_801_rev_req_loc_velocity_information = -1;
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static int hf_ansi_801_gps_autonomous_acquisition_capable = -1;
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static int hf_ansi_801_num_sv_p16 = -1;
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static int hf_ansi_801_mob_sys_t_offset = -1;
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static int hf_ansi_801_desired_pilot_phase_resolution = -1;
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static int hf_ansi_801_for_req_loc_velocity_information = -1;
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static int hf_ansi_801_reserved8_0F = -1;
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static int hf_ansi_801_hybrid_gps_and_aflt_lcc = -1;
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static int hf_ansi_801_gps_acq_cap = -1;
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static int hf_ansi_801_gps_sensitivity_assistance = -1;
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static int hf_ansi_801_ms_ls_rev = -1;
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static int hf_ansi_801_reject_request_type = -1;
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static int hf_ansi_801_ms_mode = -1;
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static int hf_ansi_801_bs_ls_rev = -1;
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static int hf_ansi_801_ref_pn = -1;
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static int hf_ansi_801_rev_message_number_responses0F = -1;
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static int hf_ansi_801_for_req_loc_height_information = -1;
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static int hf_ansi_801_gps_capability_indicator = -1;
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static int hf_ansi_801_rev_req_loc_clock_correction_for_gps_time = -1;
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static int hf_ansi_801_data_records = -1;
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static int hf_ansi_801_for_message_number_requests8 = -1;
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static int hf_ansi_801_subframes_4_and_5 = -1;
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static int hf_ansi_801_use_action_time_indicator = -1;
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static int hf_ansi_801_lcc_using_gps_almanac_assistance = -1;
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static int hf_ansi_801_lcc_using_gps_almanac_correction = -1;
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static int hf_ansi_801_pd_message_len = -1;
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static int hf_ansi_801_lcc_using_location_assistance_cartesian = -1;
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static int hf_ansi_801_for_message_number_requests16 = -1;
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static int hf_ansi_801_reserved_24_7 = -1;
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static int hf_ansi_801_loc_calc_cap = -1;
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static int hf_ansi_801_toa = -1;
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static int hf_ansi_801_data = -1;
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static int hf_ansi_801_proprietary_data = -1;
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static int hf_ansi_801_time_ref_ms = -1;
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static int hf_ansi_801_time_of_almanac = -1;
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static int hf_ansi_801_gps_week_number = -1;
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static expert_field ei_ansi_801_extraneous_data = EI_INIT;
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static expert_field ei_ansi_801_short_data = EI_INIT;
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static expert_field ei_ansi_801_unexpected_length = EI_INIT;
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static dissector_handle_t ansi_801_handle;
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/* PARAM FUNCTIONS */
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#define EXTRANEOUS_DATA_CHECK(edc_len, edc_max_len) \
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if ((edc_len) > (edc_max_len)) \
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{ \
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proto_tree_add_expert(tree, pinfo, &ei_ansi_801_extraneous_data, tvb, \
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offset, (edc_len) - (edc_max_len)); \
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}
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#define SHORT_DATA_CHECK(sdc_len, sdc_min_len) \
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if ((sdc_len) < (sdc_min_len)) \
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{ \
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proto_tree_add_expert(tree, pinfo, &ei_ansi_801_short_data, tvb, \
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offset, (sdc_len)); \
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return; \
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}
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#define EXACT_DATA_CHECK(edc_len, edc_eq_len) \
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if ((edc_len) != (edc_eq_len)) \
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{ \
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proto_tree_add_expert(tree, pinfo, &ei_ansi_801_unexpected_length, tvb, \
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offset, (edc_len)); \
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return; \
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}
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/*
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* Table 3.2-4 for PD_MSG_TYPE = '0000000'
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*/
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static const value_string for_req_type_strings[] = {
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{ 0, "Reserved" },
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{ 1, "Request Location Response" },
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{ 2, "Request MS Information" },
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{ 3, "Request Autonomous Measurement Weighting Factors" },
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{ 4, "Request Pseudorange Measurement" },
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{ 5, "Request Pilot Phase Measurement" },
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{ 6, "Request Time Offset Measurement" },
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{ 7, "Request Cancellation" },
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{ 0, NULL },
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};
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#define NUM_FOR_REQ_TYPE (sizeof(for_req_type_strings)/sizeof(value_string))
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static gint ett_for_req_type[NUM_FOR_REQ_TYPE];
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static const value_string for_rsp_type_strings[] = {
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{ 0, "Reject" },
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{ 2, "Provide BS Capabilities" },
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{ 4, "Provide GPS Acquisition Assistance" },
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{ 6, "Provide GPS Location Assistance Spherical Coordinates" },
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{ 7, "Provide GPS Location Assistance Cartesian Coordinates" },
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{ 5, "Provide GPS Sensitivity Assistance" },
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{ 3, "Provide Base Station Almanac" },
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{ 8, "Provide GPS Almanac" },
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{ 9, "Provide GPS Ephemeris" },
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{ 10, "Provide GPS Navigation Message Bits" },
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{ 1, "Provide Location Response" },
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{ 11, "Provide GPS Almanac Correction" },
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{ 12, "Provide GPS Satellite Health Information" },
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{ 0, NULL },
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};
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#define NUM_FOR_RSP_TYPE (sizeof(for_rsp_type_strings)/sizeof(value_string))
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static gint ett_for_rsp_type[NUM_FOR_RSP_TYPE];
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static const value_string rev_rsp_type_strings[] = {
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{ 0, "Reject" },
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{ 2, "Provide MS Information" },
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{ 3, "Provide Autonomous Measurement Weighting Factors" },
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{ 4, "Provide Pseudorange Measurement" },
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{ 5, "Provide Pilot Phase Measurement" },
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{ 1, "Provide Location Response" },
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{ 6, "Provide Time Offset Measurement" },
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{ 7, "Provide Cancellation Acknowledgement" },
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{ 0, NULL },
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};
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#define NUM_REV_RSP_TYPE (sizeof(rev_rsp_type_strings)/sizeof(value_string))
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static gint ett_rev_rsp_type[NUM_REV_RSP_TYPE];
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/*
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* Table 2.2-5 for PD_MSG_TYPE = '0000000'
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*/
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static const value_string rev_req_type_strings[] = {
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{ 0, "Reserved" },
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{ 2, "Request BS Capabilities" },
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{ 4, "Request GPS Acquisition Assistance" },
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{ 6, "Request GPS Location Assistance" },
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{ 7, "Reserved" },
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{ 5, "Request GPS Sensitivity Assistance" },
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{ 3, "Request Base Station Almanac" },
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{ 8, "Request GPS Almanac" },
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{ 9, "Request GPS Ephemeris" },
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{ 10, "Request GPS Navigation Message Bits" },
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{ 1, "Request Location Response" },
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{ 11, "Request GPS Almanac Correction" },
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{ 12, "Request GPS Satellite Health Information" },
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{ 0, NULL },
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};
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#define NUM_REV_REQ_TYPE (sizeof(rev_req_type_strings)/sizeof(value_string))
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static gint ett_rev_req_type[NUM_REV_REQ_TYPE];
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static const value_string regulatory_services_indicator_vals[] = {
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{ 0, "No Regulatory service" },
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{ 1, "Emergency service" },
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{ 2, "Reserved" },
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{ 3, "Reserved" },
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{ 0, NULL },
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};
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static const true_false_string tfs_desired_pilot_phase_resolution = { "at least 1/8th PN chip resolution", "at least 1 PN chip resolution" };
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static const true_false_string tfs_spherical_cartesian = { "Spherical", "Cartesian" };
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static const unit_name_string units_time_of_almanac = { " (in units of 4096 seconds)", NULL };
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static const unit_name_string units_gps_week_number = { " (8 least significant bits)", NULL };
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static void
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for_req_pseudo_meas(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
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{
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guint32 saved_offset = offset;
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SHORT_DATA_CHECK(len, 3);
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/* PREF_RESP_QUAL */
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proto_tree_add_item(tree, hf_ansi_801_pref_resp_qual, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_num_fixes, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_t_betw_fixes, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_offset_req, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_reserved_24_7, tvb, offset, 3, ENC_BIG_ENDIAN);
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offset += 3;
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EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
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}
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static void
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for_req_pilot_ph_meas(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
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{
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guint32 saved_offset;
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SHORT_DATA_CHECK(len, 3);
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saved_offset = offset;
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proto_tree_add_item(tree, hf_ansi_801_pref_resp_qual, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_num_fixes, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_t_betw_fixes, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_offset_req, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_desired_pilot_phase_resolution, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_reserved_24_7, tvb, offset, 3, ENC_BIG_ENDIAN);
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offset += 3;
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EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
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}
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static void
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for_req_loc_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
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{
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guint32 saved_offset;
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SHORT_DATA_CHECK(len, 3);
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saved_offset = offset;
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proto_tree_add_item(tree, hf_ansi_801_pref_resp_qual, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_num_fixes, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_t_betw_fixes, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_for_req_loc_height_information, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_for_req_loc_clock_correction_for_gps_time, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_for_req_loc_velocity_information, tvb, offset, 3, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_ansi_801_reserved24_3, tvb, offset, 3, ENC_BIG_ENDIAN);
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offset += 3;
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EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
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}
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static void
|
|
for_req_time_off_meas(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint8 oct;
|
|
guint32 saved_offset;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
|
|
saved_offset = offset;
|
|
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_use_action_time_indicator, tvb, offset, 1, ENC_NA);
|
|
|
|
if (oct & 0x80)
|
|
{
|
|
proto_tree_add_item(tree, hf_ansi_801_action_time, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_01, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_7F, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
for_req_cancel(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint8 oct;
|
|
guint32 saved_offset;
|
|
const gchar *str = NULL;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
|
|
saved_offset = offset;
|
|
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
str = val_to_str_const((oct & 0xf0) >> 4, for_req_type_strings, "Reserved");
|
|
proto_tree_add_uint_format_value(tree, hf_ansi_801_cancellation_type, tvb, offset, 1,
|
|
oct, "(%u) %s", (oct & 0xf0) >> 4, str);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_0F, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
for_reject(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint8 oct;
|
|
guint32 saved_offset;
|
|
const gchar *str = NULL;
|
|
|
|
saved_offset = offset;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
str = val_to_str_const((oct & 0xf0) >> 4, rev_req_type_strings, "Reserved");
|
|
|
|
proto_tree_add_uint_format_value(tree, hf_ansi_801_reject_request_type, tvb, offset, 1, oct,
|
|
"(%u) %s", (oct & 0xf0) >> 4, str);
|
|
|
|
switch ((oct & 0x0e) >> 1)
|
|
{
|
|
case 0x00: str = "Capability not supported by the base station"; break;
|
|
case 0x01: str = "Capability normally supported by the base station but temporarily not available or not enabled"; break;
|
|
default: str = "Reserved"; break;
|
|
}
|
|
|
|
proto_tree_add_uint_format_value(tree, hf_ansi_801_reject_reason, tvb, offset, 1, oct, "%s", str);
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_01, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
for_pr_bs_cap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint8 oct;
|
|
guint32 saved_offset;
|
|
|
|
saved_offset = offset;
|
|
|
|
SHORT_DATA_CHECK(len, 2);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_bs_ls_rev, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_gps_capability_indicator, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_afltc_id, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
if (oct == 0x00)
|
|
{
|
|
proto_tree_add_uint_format(tree, hf_ansi_801_apdc_id, tvb, offset, 1, 0,
|
|
"APDC_ID: Autonomous position determination capability indicator: None");
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_item(tree, hf_ansi_801_apdc_id, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
for_pr_gps_sense_ass(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset;
|
|
|
|
saved_offset = offset;
|
|
|
|
SHORT_DATA_CHECK(len, 4);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_ref_bit_num, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_num_dr_p, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_dr_size, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_part_num, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_total_parts, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_data_records, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
for_pr_gps_almanac(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset = offset;
|
|
int * const fields[] = {
|
|
&hf_ansi_801_num_sv_p32,
|
|
&hf_ansi_801_week_num,
|
|
&hf_ansi_801_toa,
|
|
&hf_ansi_801_part_num32,
|
|
&hf_ansi_801_total_parts32,
|
|
NULL
|
|
};
|
|
|
|
SHORT_DATA_CHECK(len, 4);
|
|
|
|
proto_tree_add_bitmask_list(tree, tvb, offset, 4, fields, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
for_pr_gps_nav_msg_bits(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset = offset;
|
|
int * const fields[] = {
|
|
&hf_ansi_801_num_sv_p16,
|
|
&hf_ansi_801_part_num16,
|
|
&hf_ansi_801_total_parts16,
|
|
NULL
|
|
};
|
|
|
|
SHORT_DATA_CHECK(len, 2);
|
|
|
|
proto_tree_add_bitmask_list(tree, tvb, offset, 2, fields, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
/*
|
|
* shared for both forward/reverse directions
|
|
*/
|
|
static const true_false_string ansi_801_fix_type_vals = {
|
|
"3D",
|
|
"2D"
|
|
};
|
|
|
|
static void
|
|
pr_loc_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 bit_offset, spare_bits;
|
|
guint32 value;
|
|
float fl_value;
|
|
guint32 saved_offset;
|
|
guint64 fix_type, velocity_incl, clock_incl, height_incl;
|
|
const gchar *str = NULL;
|
|
|
|
SHORT_DATA_CHECK(len, 11);
|
|
saved_offset = offset;
|
|
bit_offset = offset << 3;
|
|
|
|
/* TIME_REF_CDMA */
|
|
value = tvb_get_bits16(tvb, bit_offset, 14, ENC_BIG_ENDIAN);
|
|
proto_tree_add_uint_bits_format_value(tree, hf_ansi_801_time_ref_cdma, tvb, bit_offset, 14, value * 50,
|
|
"%u frames (0x%04x)", value * 50, value);
|
|
bit_offset += 14;
|
|
|
|
/* LAT */
|
|
value = tvb_get_bits32(tvb, bit_offset, 25, ENC_BIG_ENDIAN);
|
|
fl_value = (float)(-90.0 + ((float)value * 180 / 33554432));
|
|
proto_tree_add_float_bits_format_value(tree, hf_ansi_801_lat, tvb, bit_offset, 25, fl_value,
|
|
"%.5f degrees %s (0x%08x)", fabs(fl_value), fl_value < 0 ? "South" : "North", value);
|
|
bit_offset += 25;
|
|
|
|
/* LONG */
|
|
value = tvb_get_bits32(tvb, bit_offset, 26, ENC_BIG_ENDIAN);
|
|
fl_value = (float)(-180.0 + ((float)value * 180 / 33554432));
|
|
proto_tree_add_float_bits_format_value(tree, hf_ansi_801_long, tvb, bit_offset, 26, fl_value,
|
|
"%.5f degrees %s (0x%08x)", fabs(fl_value), fl_value < 0 ? "West" : "East", value);
|
|
bit_offset += 26;
|
|
|
|
/* LOC_UNCRTNTY_ANG */
|
|
value = tvb_get_bits8(tvb, bit_offset, 4);
|
|
fl_value = (float)(5.625 * value);
|
|
proto_tree_add_float_bits_format_value(tree, hf_ansi_801_loc_uncrtnty_ang, tvb, bit_offset, 4, fl_value,
|
|
"%.5f degrees (0x%02x)", fl_value, value);
|
|
bit_offset += 4;
|
|
|
|
/* LOC_UNCRTNTY_A */
|
|
value = tvb_get_bits8(tvb, bit_offset, 5);
|
|
switch (value)
|
|
{
|
|
case 0x1e: str = "> 12288.00 meters"; break;
|
|
case 0x1f: str = "Not computable"; break;
|
|
default:
|
|
fl_value = (float)(0.5f * (1 << (value >> 1)));
|
|
if (value & 0x01)
|
|
fl_value *= 1.5f;
|
|
str = wmem_strdup_printf(wmem_packet_scope(), "%.2f meters", fl_value);
|
|
}
|
|
proto_tree_add_uint_bits_format_value(tree, hf_ansi_801_loc_uncrtnty_a, tvb, bit_offset, 5, value,
|
|
"%s (0x%02x)", str, value);
|
|
bit_offset += 5;
|
|
|
|
/* LOC_UNCRTNTY_P */
|
|
value = tvb_get_bits8(tvb, bit_offset, 5);
|
|
switch (value)
|
|
{
|
|
case 0x1e: str = "> 12288.00 meters"; break;
|
|
case 0x1f: str = "Not computable"; break;
|
|
default:
|
|
fl_value = (float)(0.5f * (1 << (value >> 1)));
|
|
if (value & 0x01)
|
|
fl_value *= 1.5f;
|
|
str = wmem_strdup_printf(wmem_packet_scope(), "%.2f meters", fl_value);
|
|
}
|
|
proto_tree_add_uint_bits_format_value(tree, hf_ansi_801_loc_uncrtnty_p, tvb, bit_offset, 5, value,
|
|
"%s (0x%02x)", str, value);
|
|
bit_offset += 5;
|
|
|
|
/* FIX_TYPE */
|
|
proto_tree_add_bits_ret_val(tree, hf_ansi_801_fix_type, tvb, bit_offset++, 1, &fix_type, ENC_BIG_ENDIAN);
|
|
|
|
/* VELOCITY_INCL */
|
|
proto_tree_add_bits_ret_val(tree, hf_ansi_801_velocity_incl, tvb, bit_offset++, 1, &velocity_incl, ENC_BIG_ENDIAN);
|
|
|
|
|
|
if(velocity_incl)
|
|
{
|
|
/* VELOCITY_HOR */
|
|
value = tvb_get_bits16(tvb, bit_offset, 9, ENC_BIG_ENDIAN);
|
|
fl_value = (float)(0.25 * value);
|
|
proto_tree_add_float_bits_format_value(tree, hf_ansi_801_velocity_hor, tvb, bit_offset, 9, fl_value,
|
|
"%.2f m/s (0x%04x)", fl_value, value);
|
|
bit_offset += 9;
|
|
|
|
/* HEADING */
|
|
value = tvb_get_bits16(tvb, bit_offset, 10, ENC_BIG_ENDIAN);
|
|
fl_value = (float)value * 360 / 1024;
|
|
proto_tree_add_float_bits_format_value(tree, hf_ansi_801_heading, tvb, bit_offset, 10, fl_value,
|
|
"%.3f degrees (0x%04x)", fl_value, value);
|
|
bit_offset += 10;
|
|
|
|
if(fix_type)
|
|
{
|
|
/* VELOCITY_VER */
|
|
value = tvb_get_bits8(tvb, bit_offset, 8);
|
|
fl_value = (float)(-64 + 0.5 * value);
|
|
proto_tree_add_float_bits_format_value(tree, hf_ansi_801_velocity_ver, tvb, bit_offset, 8, fl_value,
|
|
"%.1f m/s (0x%02x)", fl_value, value);
|
|
bit_offset += 8;
|
|
}
|
|
}
|
|
|
|
/* CLOCK_INCL */
|
|
proto_tree_add_bits_ret_val(tree, hf_ansi_801_clock_incl, tvb, bit_offset++, 1, &clock_incl, ENC_BIG_ENDIAN);
|
|
|
|
if(clock_incl)
|
|
{
|
|
/* CLOCK_BIAS */
|
|
value = tvb_get_bits32(tvb, bit_offset, 18, ENC_BIG_ENDIAN);
|
|
proto_tree_add_int_bits_format_value(tree, hf_ansi_801_clock_bias, tvb, bit_offset, 18, (gint32)value - 13000,
|
|
"%d ns (0x%06x)", (gint32)value - 13000, value);
|
|
bit_offset += 18;
|
|
|
|
/* CLOCK_DRIFT */
|
|
value = tvb_get_bits16(tvb, bit_offset, 16, ENC_BIG_ENDIAN);
|
|
proto_tree_add_int_bits_format_value(tree, hf_ansi_801_clock_drift, tvb, bit_offset, 16, (gint16)value,
|
|
"%d ppb (ns/s) (0x%04x)", (gint16)value, value);
|
|
bit_offset += 16;
|
|
}
|
|
|
|
/* HEIGHT_INCL */
|
|
proto_tree_add_bits_ret_val(tree, hf_ansi_801_height_incl, tvb, bit_offset++, 1, &height_incl, ENC_BIG_ENDIAN);
|
|
|
|
if(height_incl)
|
|
{
|
|
/* HEIGHT */
|
|
value = tvb_get_bits16(tvb, bit_offset, 14, ENC_BIG_ENDIAN);
|
|
proto_tree_add_int_bits_format_value(tree, hf_ansi_801_height, tvb, bit_offset, 14, (gint32)value - 500,
|
|
"%d m (0x%04x)", (gint32)value - 500, value);
|
|
bit_offset += 14;
|
|
|
|
/* LOC_UNCRTNTY_V */
|
|
value = tvb_get_bits8(tvb, bit_offset, 5);
|
|
switch (value)
|
|
{
|
|
case 0x1e: str = "> 12288.00 meters"; break;
|
|
case 0x1f: str = "Not computable"; break;
|
|
default:
|
|
fl_value = (float)(0.5f * (1 << (value >> 1)));
|
|
if (value & 0x01)
|
|
fl_value *= 1.5f;
|
|
str = wmem_strdup_printf(wmem_packet_scope(), "%.2f meters", fl_value);
|
|
}
|
|
proto_tree_add_uint_bits_format_value(tree, hf_ansi_801_loc_uncrtnty_v, tvb, bit_offset, 5, value,
|
|
"%s (0x%02x)", str, value);
|
|
bit_offset += 5;
|
|
}
|
|
|
|
if(bit_offset & 0x07)
|
|
{
|
|
spare_bits = 8 - (bit_offset & 0x07);
|
|
proto_tree_add_bits_item(tree, hf_ansi_801_reserved_bits, tvb, bit_offset, spare_bits, ENC_BIG_ENDIAN);
|
|
bit_offset += spare_bits;
|
|
}
|
|
|
|
offset = bit_offset >> 3;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
for_pr_loc_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
pr_loc_response(tvb, pinfo, tree, len, offset);
|
|
}
|
|
|
|
static void
|
|
for_pr_gps_sat_health(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 bit_offset, spare_bits;
|
|
guint32 i;
|
|
guint32 saved_offset, num_bad_sv, bad_sv_prn_num;
|
|
guint64 bad_sv_present;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
saved_offset = offset;
|
|
bit_offset = offset << 3;
|
|
|
|
/* BAD_SV_PRESENT */
|
|
proto_tree_add_bits_ret_val(tree, hf_ansi_801_bad_sv_present, tvb, bit_offset++, 1, &bad_sv_present, ENC_BIG_ENDIAN);
|
|
|
|
if (bad_sv_present)
|
|
{
|
|
/* NUM_BAD_SV */
|
|
num_bad_sv = tvb_get_bits8(tvb, bit_offset, 4) + 1;
|
|
proto_tree_add_uint_bits_format_value(tree, hf_ansi_801_num_bad_sv, tvb, bit_offset, 4, num_bad_sv,
|
|
"%u", num_bad_sv);
|
|
bit_offset += 4;
|
|
|
|
for (i=0; i < num_bad_sv; i++)
|
|
{
|
|
/* BAD_SV_PRN_NUM */
|
|
bad_sv_prn_num = tvb_get_bits8(tvb, bit_offset, 5) + 1;
|
|
proto_tree_add_uint_bits_format_value(tree, hf_ansi_801_bad_sv_prn_num, tvb, bit_offset, 5, bad_sv_prn_num,
|
|
"%u", bad_sv_prn_num);
|
|
bit_offset += 5;
|
|
}
|
|
}
|
|
|
|
if(bit_offset & 0x07)
|
|
{
|
|
spare_bits = 8 - (bit_offset & 0x07);
|
|
proto_tree_add_bits_item(tree, hf_ansi_801_reserved_bits, tvb, bit_offset, spare_bits, ENC_BIG_ENDIAN);
|
|
bit_offset += spare_bits;
|
|
}
|
|
|
|
offset = bit_offset >> 3;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_req_gps_acq_ass(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset;
|
|
guint32 bit_offset;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
saved_offset = offset;
|
|
bit_offset = offset << 3;
|
|
|
|
proto_tree_add_bits_item(tree, hf_ansi_801_dopp_req, tvb, bit_offset++, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_bits_item(tree, hf_ansi_801_add_dopp_req, tvb, bit_offset++, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_bits_item(tree, hf_ansi_801_code_ph_par_req, tvb, bit_offset++, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_bits_item(tree, hf_ansi_801_az_el_req, tvb, bit_offset++, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_bits_item(tree, hf_ansi_801_reserved_bits, tvb, bit_offset, 4, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_req_gps_loc_ass(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
|
|
saved_offset = offset;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_coordinate_type_requested, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_7F, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_req_bs_alm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
|
|
saved_offset = offset;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_extended_base_station_almanac, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_7F, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_req_gps_ephemeris(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
|
|
saved_offset = offset;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_alpha_and_beta_parameters, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_7F, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_req_gps_nav_msg_bits(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
|
|
saved_offset = offset;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_subframes_4_and_5, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_7F, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_req_loc_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
|
|
saved_offset = offset;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_rev_req_loc_height_information, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_rev_req_loc_clock_correction_for_gps_time, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_rev_req_loc_velocity_information, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_1F, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_req_gps_alm_correction(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset;
|
|
|
|
SHORT_DATA_CHECK(len, 2);
|
|
|
|
saved_offset = offset;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_time_of_almanac, tvb, offset, 1, ENC_NA);
|
|
|
|
offset++;
|
|
proto_tree_add_item(tree, hf_ansi_801_gps_week_number, tvb, offset, 1, ENC_NA);
|
|
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_reject(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint8 oct;
|
|
guint32 saved_offset;
|
|
const gchar *str = NULL;
|
|
|
|
saved_offset = offset;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
str = val_to_str_const((oct & 0xf0) >> 4, for_req_type_strings, "Reserved");
|
|
|
|
proto_tree_add_uint_format_value(tree, hf_ansi_801_reject_request_type, tvb, offset, 1, oct,
|
|
"(%u) %s", (oct & 0xf0) >> 4, str);
|
|
|
|
switch ((oct & 0x0e) >> 1)
|
|
{
|
|
case 0x00: str = "Capability not supported by the mobile station"; break;
|
|
case 0x01: str = "Capability normally supported by the mobile station but temporarily not available or not enabled"; break;
|
|
default: str = "Reserved"; break;
|
|
}
|
|
|
|
proto_tree_add_uint_format_value(tree, hf_ansi_801_reject_reason, tvb, offset, 1,
|
|
oct, "%s", str);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_01, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_pr_ms_information(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 value;
|
|
guint32 saved_offset;
|
|
const gchar *str = NULL;
|
|
proto_item* ti;
|
|
proto_tree *gps_tree, *loc_tree;
|
|
|
|
saved_offset = offset;
|
|
|
|
SHORT_DATA_CHECK(len, 5);
|
|
|
|
value = tvb_get_ntohs(tvb, offset);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_ms_ls_rev, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_ms_mode, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
switch (value & 0x003f)
|
|
{
|
|
case 0x00: str = "Full Chip Measurement Capability"; break;
|
|
case 0x01: str = "Half Chip Measurement Capability"; break;
|
|
case 0x02: str = "Quarter Chip Measurement Capability"; break;
|
|
case 0x03: str = "Eighth Chip Measurement Capability"; break;
|
|
case 0x04: str = "One Sixteenth Chip Measurement Capability"; break;
|
|
default: str = "Reserved"; break;
|
|
}
|
|
|
|
proto_tree_add_uint_format_value(tree, hf_ansi_801_pilot_ph_cap, tvb, offset, 2,
|
|
value, "(%u) %s", value & 0x3f, str);
|
|
offset += 2;
|
|
|
|
ti = proto_tree_add_item(tree, hf_ansi_801_gps_acq_cap, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
gps_tree = proto_item_add_subtree(ti, ett_gps);
|
|
|
|
proto_tree_add_item(gps_tree, hf_ansi_801_reserved_24_F80000, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(gps_tree, hf_ansi_801_gps_autonomous_acquisition_capable, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(gps_tree, hf_ansi_801_gps_almanac_correction, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(gps_tree, hf_ansi_801_gps_navigation_message_bits, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(gps_tree, hf_ansi_801_gps_ephemeris, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(gps_tree, hf_ansi_801_gps_almanac, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(gps_tree, hf_ansi_801_gps_sensitivity_assistance, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(gps_tree, hf_ansi_801_gps_acquisition_assistance, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
|
|
ti = proto_tree_add_item(tree, hf_ansi_801_loc_calc_cap, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
loc_tree = proto_item_add_subtree(ti, ett_loc);
|
|
|
|
proto_tree_add_item(loc_tree, hf_ansi_801_pre_programmed_location, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(loc_tree, hf_ansi_801_reserved_24_700, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(loc_tree, hf_ansi_801_hybrid_gps_and_aflt_lcc, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(loc_tree, hf_ansi_801_autonomous_location_calculation_capable, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(loc_tree, hf_ansi_801_lcc_using_gps_almanac_correction, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(loc_tree, hf_ansi_801_lcc_using_gps_ephemeris_assistance, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(loc_tree, hf_ansi_801_lcc_using_gps_almanac_assistance, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(loc_tree, hf_ansi_801_aflt_lcc, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(loc_tree, hf_ansi_801_lcc_using_location_assistance_cartesian, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(loc_tree, hf_ansi_801_lcc_capable_using_location_assistance_spherical, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
offset += 3;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_pr_loc_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
pr_loc_response(tvb, pinfo, tree, len, offset);
|
|
}
|
|
|
|
static void
|
|
rev_pr_time_off_meas(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint32 saved_offset;
|
|
|
|
saved_offset = offset;
|
|
|
|
SHORT_DATA_CHECK(len, 6);
|
|
|
|
proto_tree_add_uint_format_value(tree, hf_ansi_801_time_ref_ms, tvb, offset, 3, tvb_get_ntoh24(tvb, offset),
|
|
"The time of validity of the parameters reported in this response element.");
|
|
offset += 3;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_ref_pn, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_mob_sys_t_offset, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved24_1, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
offset += 3;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void
|
|
rev_pr_can_ack(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset)
|
|
{
|
|
guint8 oct;
|
|
guint32 saved_offset;
|
|
const gchar *str;
|
|
|
|
saved_offset = offset;
|
|
|
|
SHORT_DATA_CHECK(len, 1);
|
|
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
str = val_to_str_const((oct & 0xf0) >> 4, for_req_type_strings, "Reserved");
|
|
proto_tree_add_uint_format_value(tree, hf_ansi_801_cancellation_type, tvb, offset, 1, oct,
|
|
"(%u) %s", (oct & 0xf0) >> 4, str);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_no_outstanding_request_element, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_07, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
|
|
}
|
|
|
|
static void (*for_req_type_fcn[])(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset) = {
|
|
NULL, /* Reserved */
|
|
NULL, /* no data */ /* Request MS Information */
|
|
NULL, /* no data */ /* Request Autonomous Measurement Weighting Factors */
|
|
for_req_pseudo_meas, /* Request Pseudorange Measurement */
|
|
for_req_pilot_ph_meas, /* Request Pilot Phase Measurement */
|
|
for_req_loc_response, /* Request Location Response */
|
|
for_req_time_off_meas, /* Request Time Offset Measurement */
|
|
for_req_cancel, /* Request Cancellation */
|
|
NULL, /* NONE */
|
|
};
|
|
|
|
static void (*for_rsp_type_fcn[])(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset) = {
|
|
for_reject, /* Reject */
|
|
for_pr_bs_cap, /* Provide BS Capabilities */
|
|
NULL, /* Provide GPS Acquisition Assistance */
|
|
NULL, /* Provide GPS Location Assistance Spherical Coordinates */
|
|
NULL, /* Provide GPS Location Assistance Cartesian Coordinates */
|
|
for_pr_gps_sense_ass, /* Provide GPS Sensitivity Assistance */
|
|
NULL, /* Provide Base Station Almanac */
|
|
for_pr_gps_almanac, /* Provide GPS Almanac */
|
|
NULL, /* Provide GPS Ephemeris */
|
|
for_pr_gps_nav_msg_bits, /* Provide GPS Navigation Message Bits */
|
|
for_pr_loc_response, /* Provide Location Response */
|
|
NULL, /* Provide GPS Almanac Correction */
|
|
for_pr_gps_sat_health, /* Provide GPS Satellite Health Information */
|
|
NULL, /* NONE */
|
|
};
|
|
|
|
static void (*rev_req_type_fcn[])(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset) = {
|
|
NULL, /* Reserved */
|
|
NULL, /* no data */ /* Request BS Capabilities */
|
|
rev_req_gps_acq_ass, /* Request GPS Acquisition Assistance */
|
|
rev_req_gps_loc_ass, /* Request GPS Location Assistance */
|
|
NULL, /* Reserved */
|
|
NULL, /* no data */ /* Request GPS Sensitivity Assistance */
|
|
rev_req_bs_alm, /* Request Base Station Almanac */
|
|
NULL, /* no data */ /* Request GPS Almanac */
|
|
rev_req_gps_ephemeris, /* Request GPS Ephemeris */
|
|
rev_req_gps_nav_msg_bits, /* Request GPS Navigation Message Bits */
|
|
rev_req_loc_response, /* Request Location Response */
|
|
rev_req_gps_alm_correction, /* Request GPS Almanac Correction */
|
|
NULL, /* no data */ /* Request GPS Satellite Health Information */
|
|
NULL, /* NONE */
|
|
};
|
|
|
|
static void (*rev_rsp_type_fcn[])(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint len, guint32 offset) = {
|
|
rev_reject, /* Reject */
|
|
rev_pr_ms_information, /* Provide MS Information */
|
|
NULL, /* Provide Autonomous Measurement Weighting Factors */
|
|
NULL, /* Provide Pseudorange Measurement */
|
|
NULL, /* Provide Pilot Phase Measurement */
|
|
rev_pr_loc_response, /* Provide Location Response */
|
|
rev_pr_time_off_meas, /* Provide Time Offset Measurement */
|
|
rev_pr_can_ack, /* Provide Cancellation Acknowledgement */
|
|
NULL, /* NONE */
|
|
};
|
|
|
|
static void
|
|
for_request(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint32 *offset_p, guint8 pd_msg_type)
|
|
{
|
|
guint32 offset;
|
|
guint8 oct;
|
|
const gchar *str = NULL;
|
|
gint idx;
|
|
proto_tree *subtree;
|
|
proto_item *item;
|
|
|
|
offset = *offset_p;
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
if (pd_msg_type == 0x00)
|
|
{
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_F0, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
str = try_val_to_str_idx(oct & 0x0f, for_req_type_strings, &idx);
|
|
if (str == NULL)
|
|
{
|
|
return;
|
|
}
|
|
|
|
item = proto_tree_add_uint_format_value(tree, hf_ansi_801_for_req_type, tvb, offset, 1,
|
|
oct & 0x0f, "%s (%u)", str, oct & 0x0f);
|
|
}
|
|
else
|
|
{
|
|
/* TBD */
|
|
/*
|
|
* It is unclear from TIA-801-A how this was meant to be decoded.
|
|
* Are the elements supposed to be byte aligned?
|
|
*/
|
|
return;
|
|
}
|
|
|
|
subtree = proto_item_add_subtree(item, ett_for_req_type[idx]);
|
|
|
|
offset++;
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_item(subtree, hf_ansi_801_for_request_length, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
if (oct > 0)
|
|
{
|
|
if (for_req_type_fcn[idx] != NULL)
|
|
{
|
|
(*for_req_type_fcn[idx])(tvb, pinfo, subtree, oct, offset);
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_item(subtree, hf_ansi_801_data, tvb, offset, oct, ENC_NA);
|
|
}
|
|
}
|
|
|
|
*offset_p = offset + oct;
|
|
}
|
|
|
|
static void
|
|
for_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint32 *offset_p)
|
|
{
|
|
guint32 offset;
|
|
guint8 oct;
|
|
const gchar *str = NULL;
|
|
gint idx;
|
|
proto_tree *subtree;
|
|
proto_item *item;
|
|
|
|
offset = *offset_p;
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_E0, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_unsolicited_response_indicator, tvb, offset, 1, ENC_NA);
|
|
|
|
str = try_val_to_str_idx(oct & 0x0f, for_rsp_type_strings, &idx);
|
|
|
|
if (str == NULL)
|
|
{
|
|
return;
|
|
}
|
|
|
|
item = proto_tree_add_uint_format_value(tree, hf_ansi_801_for_rsp_type, tvb, offset, 1,
|
|
oct & 0x0f, "%s (%u)", str, oct & 0x0f);
|
|
subtree = proto_item_add_subtree(item, ett_for_rsp_type[idx]);
|
|
|
|
offset++;
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_item(subtree, hf_ansi_801_for_response_length, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
offset++;
|
|
|
|
if (for_rsp_type_fcn[idx] != NULL)
|
|
{
|
|
(*for_rsp_type_fcn[idx])(tvb, pinfo, subtree, oct, offset);
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_item(subtree, hf_ansi_801_data, tvb, offset, oct, ENC_NA);
|
|
}
|
|
|
|
*offset_p = offset + oct;
|
|
}
|
|
|
|
static void
|
|
rev_request(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint32 *offset_p, guint8 pd_msg_type)
|
|
{
|
|
guint32 offset;
|
|
guint8 oct;
|
|
const gchar *str = NULL;
|
|
gint idx;
|
|
proto_tree *subtree;
|
|
proto_item *item;
|
|
|
|
offset = *offset_p;
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
if (pd_msg_type == 0x00)
|
|
{
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_F0, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
str = try_val_to_str_idx(oct & 0x0f, rev_req_type_strings, &idx);
|
|
if (str == NULL)
|
|
{
|
|
return;
|
|
}
|
|
|
|
item = proto_tree_add_uint_format_value(tree, hf_ansi_801_rev_req_type, tvb, offset, 1,
|
|
oct & 0x0f, "%s (%u)", str, oct & 0x0f);
|
|
}
|
|
else
|
|
{
|
|
/* TBD */
|
|
/*
|
|
* It is unclear from TIA-801-A how this was meant to be decoded.
|
|
* Are the elements supposed to be byte aligned?
|
|
*/
|
|
return;
|
|
}
|
|
|
|
subtree = proto_item_add_subtree(item, ett_rev_req_type[idx]);
|
|
|
|
offset++;
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_item(subtree, hf_ansi_801_rev_request_length, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
offset++;
|
|
|
|
if (rev_req_type_fcn[idx] != NULL)
|
|
{
|
|
(*rev_req_type_fcn[idx])(tvb, pinfo, subtree, oct, offset);
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_item(subtree, hf_ansi_801_data, tvb, offset, oct, ENC_NA);
|
|
}
|
|
|
|
*offset_p = offset + oct;
|
|
}
|
|
|
|
static void
|
|
rev_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint32 *offset_p)
|
|
{
|
|
guint32 offset;
|
|
guint8 oct;
|
|
const gchar *str = NULL;
|
|
gint idx;
|
|
proto_tree *subtree;
|
|
proto_item *item;
|
|
|
|
offset = *offset_p;
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_reserved8_E0, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_unsolicited_response_indicator, tvb, offset, 1, ENC_NA);
|
|
|
|
str = try_val_to_str_idx(oct & 0x0f, rev_rsp_type_strings, &idx);
|
|
|
|
if (str == NULL)
|
|
{
|
|
return;
|
|
}
|
|
|
|
item = proto_tree_add_uint_format_value(tree, hf_ansi_801_rev_rsp_type, tvb, offset, 1,
|
|
oct & 0x0f, "%s (%u)", str, oct & 0x0f);
|
|
subtree = proto_item_add_subtree(item, ett_rev_rsp_type[idx]);
|
|
offset++;
|
|
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_item(subtree, hf_ansi_801_rev_response_length, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
offset++;
|
|
|
|
if (rev_rsp_type_fcn[idx] != NULL)
|
|
{
|
|
(*rev_rsp_type_fcn[idx])(tvb, pinfo, subtree, oct, offset);
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_item(subtree, hf_ansi_801_data, tvb, offset, oct, ENC_NA);
|
|
}
|
|
|
|
*offset_p = offset + oct;
|
|
}
|
|
|
|
static void
|
|
dissect_ansi_801_for_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
guint32 value;
|
|
guint32 offset;
|
|
guint8 oct, num_req, num_rsp, pd_msg_type;
|
|
guint rem_len;
|
|
const gchar *str = NULL;
|
|
proto_item *hidden_item;
|
|
|
|
offset = 0;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_session_start, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_session_end, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_session_source, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_for_sess_tag, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
hidden_item = proto_tree_add_item(tree, hf_ansi_801_sess_tag, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_item_set_hidden(hidden_item);
|
|
|
|
offset++;
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
pd_msg_type = oct;
|
|
|
|
switch (pd_msg_type)
|
|
{
|
|
case 0x00: str = "Position Determination Data Message"; break;
|
|
case 0x01: str = "Position Determination Data Message"; break;
|
|
case 0xff: str = "Reserved"; break;
|
|
default:
|
|
if (pd_msg_type < 0xc0)
|
|
{
|
|
str = "Reserved for future standardization";
|
|
}
|
|
else
|
|
{
|
|
str = "Available for manufacturer-specific Position Determination "
|
|
"Data Message definition as specified in TSB-58";
|
|
}
|
|
break;
|
|
}
|
|
|
|
proto_tree_add_uint_format_value(tree, hf_ansi_801_pd_message_type, tvb, offset, 1, pd_msg_type,
|
|
"%s (%u)", str, pd_msg_type);
|
|
|
|
offset++;
|
|
|
|
if ((pd_msg_type != 0x00) &&
|
|
(pd_msg_type != 0x01))
|
|
{
|
|
proto_tree_add_item(tree, hf_ansi_801_proprietary_data, tvb, offset, -1, ENC_NA);
|
|
return;
|
|
}
|
|
|
|
if (pd_msg_type == 0x01)
|
|
{
|
|
value = tvb_get_ntohs(tvb, offset);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_pd_message_len, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_regulatory_services_indicator, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
num_req = value & 0x000f;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_for_message_number_requests16, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
num_rsp = oct & 0xf0;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_for_message_number_responsesF0, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
}
|
|
else
|
|
{
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
num_req = (oct & 0xf0) >> 4;
|
|
num_rsp = oct & 0x0f;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_for_message_number_requests8, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_for_message_number_responses0F, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
offset++;
|
|
rem_len = tvb_reported_length_remaining(tvb, offset);
|
|
|
|
while ((num_req > 0) &&
|
|
(rem_len >= 2))
|
|
{
|
|
for_request(tvb, pinfo, tree, &offset, pd_msg_type);
|
|
|
|
rem_len = tvb_reported_length_remaining(tvb, offset);
|
|
num_req--;
|
|
}
|
|
|
|
if (num_req != 0)
|
|
{
|
|
proto_tree_add_expert(tree, pinfo, &ei_ansi_801_short_data, tvb, offset, -1);
|
|
return;
|
|
}
|
|
|
|
while ((num_rsp > 0) &&
|
|
(rem_len >= 2))
|
|
{
|
|
for_response(tvb, pinfo, tree, &offset);
|
|
|
|
rem_len = tvb_reported_length_remaining(tvb, offset);
|
|
num_rsp--;
|
|
}
|
|
|
|
if (num_rsp != 0)
|
|
{
|
|
proto_tree_add_expert(tree, pinfo, &ei_ansi_801_short_data, tvb, offset, -1);
|
|
return;
|
|
}
|
|
|
|
if (rem_len > 0)
|
|
{
|
|
proto_tree_add_expert(tree, pinfo, &ei_ansi_801_extraneous_data, tvb, offset, rem_len);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_ansi_801_rev_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
guint32 value;
|
|
guint32 offset;
|
|
guint8 oct, num_req, num_rsp, pd_msg_type;
|
|
guint rem_len;
|
|
const gchar *str = NULL;
|
|
proto_item *hidden_item;
|
|
|
|
offset = 0;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_session_start, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_session_end, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_session_source, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_ansi_801_rev_sess_tag, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
hidden_item = proto_tree_add_item(tree, hf_ansi_801_sess_tag, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_item_set_hidden(hidden_item);
|
|
|
|
offset++;
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
pd_msg_type = oct;
|
|
|
|
switch (pd_msg_type)
|
|
{
|
|
case 0x00: str = "Position Determination Data Message"; break;
|
|
case 0x01: str = "Position Determination Data Message"; break;
|
|
case 0xff: str = "Reserved"; break;
|
|
default:
|
|
if (pd_msg_type < 0xc0)
|
|
{
|
|
str = "Reserved for future standardization";
|
|
}
|
|
else
|
|
{
|
|
str = "Available for manufacturer-specific Position Determination "
|
|
"Data Message definition as specified in TSB-58";
|
|
}
|
|
break;
|
|
}
|
|
|
|
proto_tree_add_uint_format_value(tree, hf_ansi_801_pd_message_type, tvb, offset, 1, pd_msg_type,
|
|
"%s (%u)", str, pd_msg_type);
|
|
offset++;
|
|
|
|
if ((pd_msg_type != 0x00) &&
|
|
(pd_msg_type != 0x01))
|
|
{
|
|
proto_tree_add_item(tree, hf_ansi_801_proprietary_data, tvb, offset, -1, ENC_NA);
|
|
return;
|
|
}
|
|
|
|
if (pd_msg_type == 0x01)
|
|
{
|
|
value = tvb_get_ntohs(tvb, offset);
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_pd_message_len, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_regulatory_services_indicator, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
num_req = value & 0x000f;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_rev_message_number_requests16, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
num_rsp = oct & 0xf0;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_rev_message_number_responsesF0, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
}
|
|
else
|
|
{
|
|
oct = tvb_get_guint8(tvb, offset);
|
|
|
|
num_req = (oct & 0xf0) >> 4;
|
|
num_rsp = oct & 0x0f;
|
|
|
|
proto_tree_add_item(tree, hf_ansi_801_rev_message_number_requests8, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_ansi_801_rev_message_number_responses0F, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
}
|
|
|
|
rem_len = tvb_reported_length_remaining(tvb, offset);
|
|
|
|
while ((num_req > 0) &&
|
|
(rem_len >= 2))
|
|
{
|
|
rev_request(tvb, pinfo, tree, &offset, pd_msg_type);
|
|
|
|
rem_len = tvb_reported_length_remaining(tvb, offset);
|
|
num_req--;
|
|
}
|
|
|
|
if (num_req != 0)
|
|
{
|
|
proto_tree_add_expert(tree, pinfo, &ei_ansi_801_short_data, tvb, offset, -1);
|
|
return;
|
|
}
|
|
|
|
while ((num_rsp > 0) &&
|
|
(rem_len >= 2))
|
|
{
|
|
rev_response(tvb, pinfo, tree, &offset);
|
|
|
|
rem_len = tvb_reported_length_remaining(tvb, offset);
|
|
num_rsp--;
|
|
}
|
|
|
|
if (num_rsp != 0)
|
|
{
|
|
proto_tree_add_expert(tree, pinfo, &ei_ansi_801_short_data, tvb, offset, -1);
|
|
return;
|
|
}
|
|
|
|
if (rem_len > 0)
|
|
{
|
|
proto_tree_add_expert(tree, pinfo, &ei_ansi_801_extraneous_data, tvb, offset, rem_len);
|
|
}
|
|
}
|
|
|
|
static int
|
|
dissect_ansi_801(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
proto_item *ansi_801_item;
|
|
proto_tree *ansi_801_tree = NULL;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, ansi_proto_name_short);
|
|
|
|
/* In the interest of speed, if "tree" is NULL, don't do any work not
|
|
* necessary to generate protocol tree items.
|
|
*/
|
|
if (tree)
|
|
{
|
|
/*
|
|
* create the ansi_801 protocol tree
|
|
*/
|
|
ansi_801_item =
|
|
proto_tree_add_protocol_format(tree, proto_ansi_801, tvb, 0, -1,
|
|
"%s %s Link",
|
|
ansi_proto_name,
|
|
(pinfo->match_uint == ANSI_801_FORWARD) ? "Forward" : "Reverse");
|
|
|
|
ansi_801_tree =
|
|
proto_item_add_subtree(ansi_801_item, ett_ansi_801);
|
|
|
|
if (pinfo->match_uint == ANSI_801_FORWARD)
|
|
{
|
|
dissect_ansi_801_for_message(tvb, pinfo, ansi_801_tree);
|
|
}
|
|
else
|
|
{
|
|
dissect_ansi_801_rev_message(tvb, pinfo, ansi_801_tree);
|
|
}
|
|
}
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
|
|
/* Register the protocol with Wireshark */
|
|
void
|
|
proto_register_ansi_801(void)
|
|
{
|
|
guint i;
|
|
gint last_offset;
|
|
|
|
/* Setup list of header fields */
|
|
static hf_register_info hf[] = {
|
|
{ &hf_ansi_801_for_req_type,
|
|
{ "Forward Request Type", "ansi_801.for_req_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_rsp_type,
|
|
{ "Forward Response Type", "ansi_801.for_rsp_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_req_type,
|
|
{ "Reverse Request Type", "ansi_801.rev_req_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_rsp_type,
|
|
{ "Reverse Response Type", "ansi_801.rev_rsp_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_sess_tag,
|
|
{ "Forward Session Tag", "ansi_801.for_sess_tag",
|
|
FT_UINT8, BASE_DEC, NULL, 0x1f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_sess_tag,
|
|
{ "Reverse Session Tag", "ansi_801.rev_sess_tag",
|
|
FT_UINT8, BASE_DEC, NULL, 0x1f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_sess_tag,
|
|
{ "Session Tag", "ansi_801.sess_tag",
|
|
FT_UINT8, BASE_DEC, NULL, 0x1f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_time_ref_cdma,
|
|
{ "CDMA system time at the time the solution is valid (TIME_REF_CDMA)", "ansi_801.time_ref_cdma",
|
|
FT_UINT32, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_lat,
|
|
{ "Latitude (LAT)", "ansi_801.lat",
|
|
FT_FLOAT, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_long,
|
|
{ "Longitude (LONG)", "ansi_801.long",
|
|
FT_FLOAT, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_loc_uncrtnty_ang,
|
|
{ "Angle of axis with respect to True North for pos uncertainty (LOC_UNCRTNTY_ANG)", "ansi_801.loc_uncrtnty_ang",
|
|
FT_FLOAT, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_loc_uncrtnty_a,
|
|
{ "Std dev of axis along angle specified for pos uncertainty (LOC_UNCRTNTY_A)", "ansi_801.loc_uncrtnty_a",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_loc_uncrtnty_p,
|
|
{ "Std dev of axis perpendicular to angle specified for pos uncertainty (LOC_UNCRTNTY_P)", "ansi_801.loc_uncrtnty_p",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_fix_type,
|
|
{ "Fix type (FIX_TYPE)", "ansi_801.fix_type",
|
|
FT_BOOLEAN, BASE_NONE, TFS(&ansi_801_fix_type_vals), 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_velocity_incl,
|
|
{ "Velocity information included (VELOCITY_INCL)", "ansi_801.velocity_incl",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_velocity_hor,
|
|
{ "Horizontal velocity magnitude (VELOCITY_HOR)", "ansi_801.velocity_hor",
|
|
FT_FLOAT, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_heading,
|
|
{ "Heading (HEADING)", "ansi_801.heading",
|
|
FT_FLOAT, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_velocity_ver,
|
|
{ "Vertical velocity (VELOCITY_VER)", "ansi_801.velocity_ver",
|
|
FT_FLOAT, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_clock_incl,
|
|
{ "Clock information included (CLOCK_INCL)", "ansi_801.clock_incl",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_clock_bias,
|
|
{ "Clock bias (CLOCK_BIAS)", "ansi_801.clock_bias",
|
|
FT_INT24, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_clock_drift,
|
|
{ "Clock drift (CLOCK_DRIFT)", "ansi_801.clock_drift",
|
|
FT_INT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_height_incl,
|
|
{ "Height information included (HEIGHT_INCL)", "ansi_801.height_incl",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_height,
|
|
{ "Height (HEIGHT)", "ansi_801.height",
|
|
FT_INT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_loc_uncrtnty_v,
|
|
{ "Std dev of vertical error for pos uncertainty (LOC_UNCRTNTY_V)", "ansi_801.loc_uncrtnty_v",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved_bits,
|
|
{ "Reserved bit(s)","ansi_801.reerved_bits",
|
|
FT_UINT8,BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_bad_sv_present,
|
|
{ "Bad GPS satellites present (BAD_SV_PRESENT)", "ansi_801.bad_sv_present",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_num_bad_sv,
|
|
{ "Number of bad GPS satellites (NUM_BAD_SV)", "ansi_801.num_bad_sv",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_bad_sv_prn_num,
|
|
{ "Satellite PRN number (SV_PRN_NUM)", "ansi_801.bad_sv_prn_num",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_dopp_req,
|
|
{ "Doppler (0th order) term requested (DOPP_REQ)", "ansi_801.dopp_req",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_add_dopp_req,
|
|
{ "Additional Doppler terms requested (ADD_DOPP_REQ)", "ansi_801.add_dopp_req",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_code_ph_par_req,
|
|
{ "Code phase parameters requested (CODE_PH_PAR_REQ)", "ansi_801.code_ph_par_req",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_az_el_req,
|
|
{ "Azimuth and elevation angle requested (AZ_EL_REQ)", "ansi_801.az_el_req",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_pref_resp_qual,
|
|
{ "Preferred response quality (PREF_RESP_QUAL)", "ansi_801.pref_resp_qual",
|
|
FT_UINT24, BASE_DEC, NULL, 0xe00000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_num_fixes,
|
|
{ "Number of fixes (NUM_FIXES)", "ansi_801.num_fixes",
|
|
FT_UINT24, BASE_DEC, NULL, 0x1fe000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_t_betw_fixes,
|
|
{ "Time between fixes (T_BETW_FIXES) (in seconds)", "ansi_801.t_betw_fixes",
|
|
FT_UINT24, BASE_DEC, NULL, 0x001fe0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_offset_req,
|
|
{ "Offset requested (OFFSET_REQ)", "ansi_801.offset_req",
|
|
FT_BOOLEAN, 24, TFS(&tfs_requested_not_requested), 0x000010,
|
|
NULL, HFILL }
|
|
},
|
|
|
|
/* Generated from convert_proto_tree_add_text.pl */
|
|
{ &hf_ansi_801_desired_pilot_phase_resolution,
|
|
{ "Desired pilot phase resolution", "ansi_801.desired_pilot_phase_resolution",
|
|
FT_BOOLEAN, 24, TFS(&tfs_desired_pilot_phase_resolution), 0x08,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved_24_7,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT24, BASE_HEX, NULL, 0x07,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_req_loc_height_information,
|
|
{ "Height information", "ansi_801.height_incl",
|
|
FT_BOOLEAN, 24, TFS(&tfs_requested_not_requested), 0x10,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_req_loc_clock_correction_for_gps_time,
|
|
{ "Clock correction for GPS time", "ansi_801.clock_correction_for_gps_time",
|
|
FT_BOOLEAN, 24, TFS(&tfs_requested_not_requested), 0x08,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_req_loc_velocity_information,
|
|
{ "Velocity information", "ansi_801.velocity_information",
|
|
FT_BOOLEAN, 24, TFS(&tfs_requested_not_requested), 0x04,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved24_3,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT24, BASE_HEX, NULL, 0x03,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_use_action_time_indicator,
|
|
{ "Use action time indicator", "ansi_801.use_action_time_indicator",
|
|
FT_BOOLEAN, 8, NULL, 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_action_time,
|
|
{ "Action time", "ansi_801.action_time",
|
|
FT_UINT8, BASE_DEC, NULL, 0x7E,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved8_7F,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, 0x7F,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_cancellation_type,
|
|
{ "Cancellation Type", "ansi_801.cancellation_type",
|
|
FT_UINT8, BASE_DEC, VALS(for_req_type_strings), 0xF0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved8_0F,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0F,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reject_request_type,
|
|
{ "Reject request type", "ansi_801.reject_request_type",
|
|
FT_UINT8, BASE_DEC, VALS(rev_req_type_strings), 0xF0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reject_reason,
|
|
{ "Reject reason", "ansi_801.reject_reason",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0E,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved8_01,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, 0x01,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_bs_ls_rev,
|
|
{ "BS_LS_REV", "ansi_801.bs_ls_rev",
|
|
FT_UINT8, BASE_HEX, NULL, 0xfc,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_gps_capability_indicator,
|
|
{ "GPSC_ID: GPS capability indicator", "ansi_801.gps_capability_indicator",
|
|
FT_UINT8, BASE_DEC, NULL, 0x02,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_afltc_id,
|
|
{ "AFLTC_ID: Advanced forward link trilateration capability indicator", "ansi_801.afltc_id",
|
|
FT_UINT8, BASE_DEC, NULL, 0x01,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_apdc_id,
|
|
{ "APDC_ID: Autonomous position determination capability indicator: Autonomous Location Technology Identifier", "ansi_801.apdc_id",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_ref_bit_num,
|
|
{ "REF_BIT_NUM", "ansi_801.ref_bit_num",
|
|
FT_UINT16, BASE_DEC, NULL, 0xffe0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_num_dr_p,
|
|
{ "NUM_DR_P: Number of data records in this part", "ansi_801.num_dr_p",
|
|
FT_UINT16, BASE_DEC, NULL, 0x001e,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_dr_size,
|
|
{ "DR_SIZE: Data record size", "ansi_801.dr_size",
|
|
FT_UINT24, BASE_DEC, NULL, 0x0001FE,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_part_num,
|
|
{ "PART_NUM: The part number", "ansi_801.part_num",
|
|
FT_UINT16, BASE_DEC, NULL, 0x01c0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_total_parts,
|
|
{ "TOTAL_PARTS: Total number of parts", "ansi_801.total_parts",
|
|
FT_UINT16, BASE_DEC, NULL, 0x38,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_data_records,
|
|
{ "Data records", "ansi_801.data_records",
|
|
FT_UINT16, BASE_DEC, NULL, 0x07,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_num_sv_p32,
|
|
{ "NUM_SV_P: Number of satellites in this part", "ansi_801.num_sv_p",
|
|
FT_UINT32, BASE_DEC, NULL, 0xfc000000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_week_num,
|
|
{ "WEEK_NUM: The GPS week number of the almanac", "ansi_801.week_num",
|
|
FT_UINT32, BASE_DEC, NULL, 0x03fc0000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_toa,
|
|
{ "TOA: The reference time of the almanac", "ansi_801.toa",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0003fc00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_part_num32,
|
|
{ "PART_NUM: The part number", "ansi_801.part_num",
|
|
FT_UINT32, BASE_DEC, NULL, 0x000003e0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_total_parts32,
|
|
{ "TOTAL_PARTS: The total number of parts", "ansi_801.total_parts",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0000001f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_num_sv_p16,
|
|
{ "NUM_SV_P: Number of satellites in this part", "ansi_801.num_sv_p",
|
|
FT_UINT16, BASE_DEC, NULL, 0xfc00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_part_num16,
|
|
{ "PART_NUM: The part number", "ansi_801.part_num",
|
|
FT_UINT16, BASE_DEC, NULL, 0x03e0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_total_parts16,
|
|
{ "TOTAL_PARTS: The total number of parts", "ansi_801.total_parts",
|
|
FT_UINT16, BASE_DEC, NULL, 0x001f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_coordinate_type_requested,
|
|
{ "Coordinate type requested", "ansi_801.coordinate_type_requested",
|
|
FT_BOOLEAN, 8, TFS(&tfs_spherical_cartesian), 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_extended_base_station_almanac,
|
|
{ "Extended base station almanac", "ansi_801.extended_base_station_almanac",
|
|
FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_alpha_and_beta_parameters,
|
|
{ "Alpha and Beta parameters", "ansi_801.alpha_and_beta_parameters",
|
|
FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_subframes_4_and_5,
|
|
{ "Subframes 4 and 5", "ansi_801.subframes_4_and_5",
|
|
FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_req_loc_height_information,
|
|
{ "Height information", "ansi_801.height_information",
|
|
FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_req_loc_clock_correction_for_gps_time,
|
|
{ "Clock correction for GPS time", "ansi_801.clock_correction_for_gps_time",
|
|
FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x40,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_req_loc_velocity_information,
|
|
{ "Velocity information", "ansi_801.velocity_information",
|
|
FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x20,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved8_1F,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, 0x1F,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_ms_ls_rev,
|
|
{ "MS_LS_REV", "ansi_801.ms_ls_rev",
|
|
FT_UINT16, BASE_DEC, NULL, 0xfc00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_ms_mode,
|
|
{ "MS_MODE", "ansi_801.ms_mode",
|
|
FT_UINT16, BASE_DEC, NULL, 0x03c0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_pilot_ph_cap,
|
|
{ "PILOT_PH_CAP", "ansi_801.pilot_ph_cap",
|
|
FT_UINT16, BASE_DEC, NULL, 0x003f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_gps_acq_cap,
|
|
{ "GPS_ACQ_CAP", "ansi_801.gps_acq_cap",
|
|
FT_UINT24, BASE_HEX, NULL, 0x000FFF,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved_24_F80000,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT24, BASE_HEX, NULL, 0xf80000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_gps_autonomous_acquisition_capable,
|
|
{ "GPS Autonomous Acquisition Capable", "ansi_801.gps_autonomous_acquisition_capable",
|
|
FT_BOOLEAN, 24, NULL, 0x040000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_gps_almanac_correction,
|
|
{ "GPS Almanac Correction", "ansi_801.gps_almanac_correction",
|
|
FT_BOOLEAN, 24, NULL, 0x020000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_gps_navigation_message_bits,
|
|
{ "GPS Navigation Message Bits", "ansi_801.gps_navigation_message_bits",
|
|
FT_BOOLEAN, 24, NULL, 0x010000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_gps_ephemeris,
|
|
{ "GPS Ephemeris", "ansi_801.gps_ephemeris",
|
|
FT_BOOLEAN, 24, NULL, 0x008000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_gps_almanac,
|
|
{ "GPS Almanac", "ansi_801.gps_almanac",
|
|
FT_BOOLEAN, 24, NULL, 0x004000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_gps_sensitivity_assistance,
|
|
{ "GPS Sensitivity Assistance", "ansi_801.gps_sensitivity_assistance",
|
|
FT_BOOLEAN, 24, NULL, 0x002000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_gps_acquisition_assistance,
|
|
{ "GPS Acquisition Assistance", "ansi_801.gps_acquisition_assistance",
|
|
FT_BOOLEAN, 24, NULL, 0x001000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_loc_calc_cap,
|
|
{ "LOC_CALC_CAP", "ansi_801.loc_calc_cap",
|
|
FT_UINT24, BASE_HEX, NULL, 0x000FFF,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_pre_programmed_location,
|
|
{ "Pre-programmed Location", "ansi_801.pre_programmed_location",
|
|
FT_BOOLEAN, 24, NULL, 0x000800,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved_24_700,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT24, BASE_HEX, NULL, 0x000700,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_hybrid_gps_and_aflt_lcc,
|
|
{ "Hybrid GPS and AFLT Location Calculation Capable", "ansi_801.hybrid_gps_and_aflt_lcc",
|
|
FT_BOOLEAN, 24, NULL, 0x000080,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_autonomous_location_calculation_capable,
|
|
{ "Autonomous Location Calculation Capable", "ansi_801.autonomous_lcc",
|
|
FT_BOOLEAN, 24, NULL, 0x000040,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_lcc_using_gps_almanac_correction,
|
|
{ "Location Calculation Capable using GPS Almanac Correction", "ansi_801.lcc_using_gps_almanac_correction",
|
|
FT_BOOLEAN, 24, NULL, 0x000020,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_lcc_using_gps_ephemeris_assistance,
|
|
{ "Location Calculation Capable using GPS Ephemeris Assistance", "ansi_801.lcc_using_gps_ephemeris_assistance",
|
|
FT_BOOLEAN, 24, NULL, 0x000010,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_lcc_using_gps_almanac_assistance,
|
|
{ "Location Calculation Capable using GPS Almanac Assistance", "ansi_801.lcc_using_gps_almanac_assistance",
|
|
FT_BOOLEAN, 24, NULL, 0x000008,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_aflt_lcc,
|
|
{ "Advanced Forward Link Trilateration (AFLT) Location Calculation Capable", "ansi_801.aflt_lcc",
|
|
FT_BOOLEAN, 24, NULL, 0x000004,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_lcc_using_location_assistance_cartesian,
|
|
{ "Location Calculation Capable using Location Assistance - Cartesian", "ansi_801.lcc_using_location_assistance.cartesian",
|
|
FT_BOOLEAN, 24, NULL, 0x000002,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_lcc_capable_using_location_assistance_spherical,
|
|
{ "Location Calculation Capable using Location Assistance - Spherical", "ansi_801.lcc_using_location_assistance.spherical",
|
|
FT_BOOLEAN, 24, NULL, 0x000001,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_ref_pn,
|
|
{ "REF_PN", "ansi_801.ref_pn",
|
|
FT_UINT24, BASE_DEC, NULL, 0xff8000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_mob_sys_t_offset,
|
|
{ "MOB_SYS_T_OFFSET", "ansi_801.mob_sys_t_offset",
|
|
FT_UINT24, BASE_DEC, NULL, 0x007ffe,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved24_1,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT24, BASE_HEX, NULL, 0x000001,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_no_outstanding_request_element,
|
|
{ "No outstanding request element", "ansi_801.no_outstanding_request_element",
|
|
FT_BOOLEAN, 8, NULL, 0x08,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved8_07,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, 0x07,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved8_F0,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, 0xF0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_request_length,
|
|
{ "Length", "ansi_801.for_request_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_reserved8_E0,
|
|
{ "Reserved", "ansi_801.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, 0xE0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_unsolicited_response_indicator,
|
|
{ "Unsolicited response indicator", "ansi_801.unsolicited_response_indicator",
|
|
FT_BOOLEAN, 8, NULL, 0x10,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_response_length,
|
|
{ "Length", "ansi_801.for_response_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_request_length,
|
|
{ "Length", "ansi_801.rev_request_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_response_length,
|
|
{ "Length", "ansi_801.rev_response_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_session_start,
|
|
{ "Session Start", "ansi_801.session_start",
|
|
FT_BOOLEAN, 8, NULL, 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_session_end,
|
|
{ "Session End", "ansi_801.session_end",
|
|
FT_BOOLEAN, 8, NULL, 0x40,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_session_source,
|
|
{ "Session Source", "ansi_801.session_source",
|
|
FT_BOOLEAN, 8, NULL, 0x20,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_pd_message_type,
|
|
{ "PD Message Type", "ansi_801.pd_message_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0xFF,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_pd_message_len,
|
|
{ "PD Message Length", "ansi_801.pd_message_len",
|
|
FT_UINT16, BASE_DEC, NULL, 0xffc0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_regulatory_services_indicator,
|
|
{ "Regulatory Services Indicator", "ansi_801.regulatory_services_indicator",
|
|
FT_UINT16, BASE_DEC, VALS(regulatory_services_indicator_vals), 0x0030,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_message_number_requests16,
|
|
{ "Number Requests", "ansi_801.for_message_number_requests",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0F,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_message_number_responsesF0,
|
|
{ "Number Responses", "ansi_801.for_message_number_responses",
|
|
FT_UINT8, BASE_DEC, NULL, 0xF0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_message_number_requests8,
|
|
{ "Number Requests", "ansi_801.for_message_number_requests",
|
|
FT_UINT8, BASE_DEC, NULL, 0xF0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_for_message_number_responses0F,
|
|
{ "Number Responses", "ansi_801.for_message_number_responses",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0F,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_message_number_requests16,
|
|
{ "Number Requests", "ansi_801.rev_message_number_requests",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0F,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_message_number_responsesF0,
|
|
{ "Number Responses", "ansi_801.rev_message_number_responses",
|
|
FT_UINT8, BASE_DEC, NULL, 0xF0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_message_number_requests8,
|
|
{ "Number Requests", "ansi_801.rev_message_number_requests",
|
|
FT_UINT8, BASE_DEC, NULL, 0xF0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_rev_message_number_responses0F,
|
|
{ "Number Responses", "ansi_801.rev_message_number_responses",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0F,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_data,
|
|
{ "Data", "ansi_801.data",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_proprietary_data,
|
|
{ "Reserved/Proprietary/Future Data", "ansi_801.proprietary_data",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_time_ref_ms,
|
|
{ "TIME_REF_MS", "ansi_801.time_ref_ms",
|
|
FT_UINT24, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_time_of_almanac,
|
|
{ "Time of almanac", "ansi_801.time_of_almanac",
|
|
FT_UINT8, BASE_DEC|BASE_UNIT_STRING, &units_time_of_almanac, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_ansi_801_gps_week_number,
|
|
{ "GPS week number", "ansi_801.gps_week_number",
|
|
FT_UINT8, BASE_DEC|BASE_UNIT_STRING, &units_gps_week_number, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
#define NUM_INDIVIDUAL_PARAMS 3
|
|
gint *ett[NUM_INDIVIDUAL_PARAMS+NUM_FOR_REQ_TYPE+NUM_FOR_RSP_TYPE+NUM_REV_REQ_TYPE+NUM_REV_RSP_TYPE];
|
|
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_ansi_801_extraneous_data, { "ansi_801.extraneous_data", PI_PROTOCOL, PI_NOTE, "Extraneous Data, dissector bug or later version spec(report to wireshark.org)", EXPFILL }},
|
|
{ &ei_ansi_801_short_data, { "ansi_801.short_data", PI_PROTOCOL, PI_NOTE, "Short Data (?) - try checking decoder variant preference or dissector bug/later version spec (report to wireshark.org)", EXPFILL }},
|
|
{ &ei_ansi_801_unexpected_length, { "ansi_801.unexpected_length", PI_PROTOCOL, PI_WARN, "Unexpected Data Length - try checking decoder variant preference or dissector bug/later version spec (report to wireshark.org)", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_ansi_801;
|
|
|
|
ett[0] = &ett_ansi_801;
|
|
ett[1] = &ett_gps;
|
|
ett[2] = &ett_loc;
|
|
|
|
last_offset = NUM_INDIVIDUAL_PARAMS;
|
|
|
|
for (i=0; i < NUM_FOR_REQ_TYPE; i++, last_offset++)
|
|
{
|
|
ett_for_req_type[i] = -1;
|
|
ett[last_offset] = &ett_for_req_type[i];
|
|
}
|
|
|
|
for (i=0; i < NUM_FOR_RSP_TYPE; i++, last_offset++)
|
|
{
|
|
ett_for_rsp_type[i] = -1;
|
|
ett[last_offset] = &ett_for_rsp_type[i];
|
|
}
|
|
|
|
for (i=0; i < NUM_REV_REQ_TYPE; i++, last_offset++)
|
|
{
|
|
ett_rev_req_type[i] = -1;
|
|
ett[last_offset] = &ett_rev_req_type[i];
|
|
}
|
|
|
|
for (i=0; i < NUM_REV_RSP_TYPE; i++, last_offset++)
|
|
{
|
|
ett_rev_rsp_type[i] = -1;
|
|
ett[last_offset] = &ett_rev_rsp_type[i];
|
|
}
|
|
|
|
/* Register the protocol name and description */
|
|
proto_ansi_801 =
|
|
proto_register_protocol(ansi_proto_name, "ANSI IS-801 (Location Services (PLD))", "ansi_801");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_ansi_801, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_ansi_801 = expert_register_protocol(proto_ansi_801);
|
|
expert_register_field_array(expert_ansi_801, ei, array_length(ei));
|
|
|
|
/* subdissector code */
|
|
ansi_801_handle = register_dissector("ansi_801", dissect_ansi_801, proto_ansi_801);
|
|
}
|
|
|
|
|
|
void
|
|
proto_reg_handoff_ansi_801(void)
|
|
{
|
|
dissector_add_uint("ansi_map.pld", ANSI_801_FORWARD, ansi_801_handle);
|
|
dissector_add_uint("ansi_map.pld", ANSI_801_REVERSE, ansi_801_handle);
|
|
dissector_add_uint("ansi_a.pld", ANSI_801_FORWARD, ansi_801_handle);
|
|
dissector_add_uint("ansi_a.pld", ANSI_801_REVERSE, ansi_801_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|