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https://github.com/gnss-sdr/gnss-sdr
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Add work on retrieving OSNMA data
This commit is contained in:
Carles Fernandez
parent
6408d74288
commit
0ba7b1611e
@ -18,14 +18,18 @@
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#include "osnma_msg_receiver.h"
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#include "display.h" // for colors in terminal
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#include "gnss_sdr_make_unique.h" // for std::make_unique in C++11
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#include <glog/logging.h> // for DLOG
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#include <gnuradio/io_signature.h> // for gr::io_signature::make
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#include <bitset>
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#include <cstddef>
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#include <cstdint>
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#include <iostream>
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#include <iterator>
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#include <numeric>
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#include <typeinfo> // for typeid
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#include <unordered_map>
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#include <utility>
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#if HAS_GENERIC_LAMBDA
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#else
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@ -40,6 +44,96 @@ namespace wht = boost;
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namespace wht = std;
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#endif
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// OSNMA SIS ICD v1.0 Table 3
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const std::unordered_map<uint8_t, std::pair<uint16_t, uint16_t>> OSNMA_TABLE_3 = {
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{0, {0, 0}},
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{1, {0, 0}},
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{2, {0, 0}},
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{3, {0, 0}},
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{4, {0, 0}},
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{5, {0, 0}},
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{6, {0, 0}},
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{7, {13, 1352}},
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{8, {14, 1456}},
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{9, {15, 1560}},
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{10, {16, 1664}},
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{11, {0, 0}},
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{12, {0, 0}},
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{13, {0, 0}},
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{14, {0, 0}},
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{15, {0, 0}}}; // key: nb_dp, value: {num_blocks, l_dp_bits}
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const std::unordered_map<uint8_t, std::string> OSNMA_TABLE_5 = {
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{0, std::string("Reserved")},
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{1, std::string("ECDSA P-256")},
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{2, std::string("Reserved")},
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{3, std::string("ECDSA P-521")},
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{4, std::string("OAM")},
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{5, std::string("Reserved")},
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{6, std::string("Reserved")},
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{7, std::string("Reserved")},
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{8, std::string("Reserved")},
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{9, std::string("Reserved")},
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{10, std::string("Reserved")},
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{11, std::string("Reserved")},
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{12, std::string("Reserved")},
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{13, std::string("Reserved")},
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{14, std::string("Reserved")},
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{15, std::string("Reserved")}}; // key: nptk, value: message
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const std::unordered_map<std::string, uint16_t> OSNMA_TABLE_6 = {
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{std::string("ECDSA P-256"), 264},
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{std::string("ECDSA P-521"), 536}};
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// OSNMA SIS ICD v1.0 Table 7
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const std::unordered_map<uint8_t, std::pair<uint16_t, uint16_t>> OSNMA_TABLE_7 = {
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{0, {0, 0}},
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{1, {7, 728}},
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{2, {8, 832}},
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{3, {9, 936}},
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{4, {10, 1040}},
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{5, {11, 1144}},
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{6, {12, 1248}},
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{7, {13, 1352}},
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{8, {14, 1456}},
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{9, {0, 0}},
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{10, {0, 0}},
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{11, {0, 0}},
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{12, {0, 0}},
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{13, {0, 0}},
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{14, {0, 0}},
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{15, {0, 0}}}; // key: nb_dk, value: {num_blocks, l_dk_bits}
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const std::unordered_map<uint8_t, std::string> OSNMA_TABLE_8 = {
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{0, std::string("SHA-256")},
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{1, std::string("Reserved")},
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{2, std::string("SHA3-256")},
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{3, std::string("Reserved")}}; // key: hs, value: hash_function
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const std::unordered_map<uint8_t, uint16_t> OSNMA_TABLE_10 = {
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{0, 96},
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{1, 104},
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{2, 112},
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{3, 120},
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{4, 128},
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{5, 160},
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{6, 192},
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{7, 224},
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{8, 256},
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{9, 0},
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{10, 0},
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{11, 0},
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{12, 0},
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{13, 0},
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{15, 0},
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{15, 0}}; // key: ks, value: lk_bits
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const std::unordered_map<std::string, std::pair<uint16_t, uint16_t>> OSNMA_TABLE_15 = {
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{std::string("ECDSA P-256"), {512, 256}},
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{std::string("ECDSA P-521"), {1059, 521}}}; // key: ECDSA Curve and hash function, value: {l_ds_bits, key_lenght_bits}
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osnma_msg_receiver_sptr osnma_msg_receiver_make()
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{
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return osnma_msg_receiver_sptr(new osnma_msg_receiver());
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@ -101,11 +195,12 @@ void osnma_msg_receiver::msg_handler_osnma(const pmt::pmt_t& msg)
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}
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void osnma_msg_receiver::process_osnma_message(std::shared_ptr<OSNMA_msg> osnma_msg)
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void osnma_msg_receiver::process_osnma_message(const std::shared_ptr<OSNMA_msg>& osnma_msg)
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{
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const auto hkroot_msg = osnma_msg->hkroot;
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read_nma_header(hkroot_msg[0]);
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read_dsm_header(hkroot_msg[1]);
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read_dsm_block(osnma_msg);
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}
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@ -123,3 +218,146 @@ void osnma_msg_receiver::read_dsm_header(uint8_t dsm_header)
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d_osnma_data.d_dsm_header.dsm_id = (dsm_header & 0b11110000) >> 4;
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d_osnma_data.d_dsm_header.dsm_block_id = dsm_header & 0b00001111; // BID
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}
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void osnma_msg_receiver::read_dsm_block(const std::shared_ptr<OSNMA_msg>& osnma_msg)
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{
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size_t i = 0;
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for (auto it = osnma_msg->hkroot.cbegin() + 2; it != osnma_msg->hkroot.cend(); ++it)
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{
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d_dsm_message[d_osnma_data.d_dsm_header.dsm_id][13 * d_osnma_data.d_dsm_header.dsm_block_id + i] = *it;
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i++;
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}
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if (d_osnma_data.d_dsm_header.dsm_block_id == 0)
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{
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// Get number of blocks in message
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uint8_t nb = (osnma_msg->hkroot[2] & 0b11110000) >> 4;
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uint16_t number_of_blocks = 0;
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if (d_osnma_data.d_dsm_header.dsm_id >= 0 && d_osnma_data.d_dsm_header.dsm_id < 12)
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{
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// Table 3
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const auto it = OSNMA_TABLE_3.find(nb);
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if (it != OSNMA_TABLE_3.cend())
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{
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number_of_blocks = it->second.first;
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}
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}
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else if (d_osnma_data.d_dsm_header.dsm_id >= 12 && d_osnma_data.d_dsm_header.dsm_id < 16)
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{
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// Table 7
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const auto it = OSNMA_TABLE_7.find(nb);
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if (it != OSNMA_TABLE_7.cend())
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{
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number_of_blocks = it->second.first;
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}
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}
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d_number_of_blocks[d_osnma_data.d_dsm_header.dsm_id] = number_of_blocks;
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}
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// Annotate bid
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d_dsm_id_received[d_osnma_data.d_dsm_header.dsm_id][d_osnma_data.d_dsm_header.dsm_block_id] = 1;
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// is message complete? -> process_dsm_message(osnma_msg)
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if ((d_number_of_blocks[d_osnma_data.d_dsm_header.dsm_id] != 0) && (d_number_of_blocks[d_osnma_data.d_dsm_header.dsm_id] == std::accumulate(d_dsm_id_received[d_osnma_data.d_dsm_header.dsm_id].begin(), d_dsm_id_received[d_osnma_data.d_dsm_header.dsm_id].end(), 0)))
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{
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std::vector<uint8_t> dsm_msg(std::size_t(d_number_of_blocks[d_osnma_data.d_dsm_header.dsm_id]) * 13, 0);
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for (uint32_t i = 0; i < d_number_of_blocks[d_osnma_data.d_dsm_header.dsm_id]; i++)
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{
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for (uint32_t j = 0; j < 14; j++)
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{
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dsm_msg[i * 13 + j] = d_dsm_message[d_osnma_data.d_dsm_header.dsm_id][i * 13 + j];
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}
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}
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process_dsm_message(osnma_msg, dsm_msg);
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}
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}
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void osnma_msg_receiver::process_dsm_message(const std::shared_ptr<OSNMA_msg>& osnma_msg, const std::vector<uint8_t>& dsm_msg)
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{
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if (d_osnma_data.d_dsm_header.dsm_id >= 0 && d_osnma_data.d_dsm_header.dsm_id < 12)
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{
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// DSM-KROOT message
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d_osnma_data.d_dsm_kroot_message.nb_dk = (dsm_msg[0] & 0b11110000) >> 4;
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d_osnma_data.d_dsm_kroot_message.pkid = (dsm_msg[0] & 0b00001111);
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d_osnma_data.d_dsm_kroot_message.cidkr = (dsm_msg[1] & 0b11000000) >> 6;
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d_osnma_data.d_dsm_kroot_message.reserved1 = (dsm_msg[1] & 0b00110000) >> 4;
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d_osnma_data.d_dsm_kroot_message.hf = (dsm_msg[1] & 0b00001100) >> 2;
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d_osnma_data.d_dsm_kroot_message.mf = (dsm_msg[1] & 0b00000011);
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d_osnma_data.d_dsm_kroot_message.ks = (dsm_msg[2] & 0b11110000) >> 4;
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d_osnma_data.d_dsm_kroot_message.ts = (dsm_msg[2] & 0b00001111);
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d_osnma_data.d_dsm_kroot_message.maclt = dsm_msg[3];
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d_osnma_data.d_dsm_kroot_message.reserved = (dsm_msg[4] & 0b11110000) >> 4;
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d_osnma_data.d_dsm_kroot_message.wn_k = static_cast<uint16_t>((dsm_msg[4] & 0b00001111) << 8) +
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static_cast<uint16_t>(dsm_msg[5]);
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d_osnma_data.d_dsm_kroot_message.towh_k = dsm_msg[6];
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uint32_t lk = 0;
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const auto it = OSNMA_TABLE_10.find(d_osnma_data.d_dsm_kroot_message.ks);
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if (it != OSNMA_TABLE_10.cend())
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{
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lk = it->second;
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}
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d_osnma_data.d_dsm_kroot_message.alpha = (static_cast<uint64_t>(dsm_msg[7]) << 40) +
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(static_cast<uint64_t>(dsm_msg[8]) << 32) +
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(static_cast<uint64_t>(dsm_msg[9]) << 24) +
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(static_cast<uint64_t>(dsm_msg[10]) << 16) +
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(static_cast<uint64_t>(dsm_msg[11]) << 8) +
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static_cast<uint64_t>(dsm_msg[12]);
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uint32_t bytes_lk = lk / 8;
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d_osnma_data.d_dsm_kroot_message.kroot = std::vector<uint8_t>(bytes_lk, 0);
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for (uint32_t k = 0; k < bytes_lk; k++)
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{
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d_osnma_data.d_dsm_kroot_message.kroot[k] = dsm_msg[13 + k];
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}
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// uint32_t l_ld = 0;
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// const auto it2 = OSNMA_TABLE_5.find()
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// d_osnma_data.d_dsm_kroot_message.ds = "0";
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// d_osnma_data.d_dsm_kroot_message.p_dk;
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}
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else if (d_osnma_data.d_dsm_header.dsm_id >= 12 && d_osnma_data.d_dsm_header.dsm_id < 16)
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{
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// DSM-PKR message
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d_osnma_data.d_dsm_pkr_message.nb_dp = (dsm_msg[0] & 0b11110000) >> 4;
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d_osnma_data.d_dsm_pkr_message.mid = (dsm_msg[0] & 0b00001111);
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for (int k = 0; k > 128; k++)
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{
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d_osnma_data.d_dsm_pkr_message.itn[k] = dsm_msg[k + 1];
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}
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d_osnma_data.d_dsm_pkr_message.npkt = (dsm_msg[129] & 0b11110000) >> 4;
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d_osnma_data.d_dsm_pkr_message.npktid = (dsm_msg[129] & 0b00001111);
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// Table 5
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uint32_t l_npk = 0;
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const auto it = OSNMA_TABLE_5.find(d_osnma_data.d_dsm_pkr_message.npkt);
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if (it != OSNMA_TABLE_5.cend())
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{
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const auto it2 = OSNMA_TABLE_6.find(it->second);
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if (it2 != OSNMA_TABLE_6.cend())
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{
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l_npk = it2->second / 8;
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}
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}
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if (d_osnma_data.d_dsm_pkr_message.npkt == 4)
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{
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// OAM
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l_npk = 0; // ?
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}
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d_osnma_data.d_dsm_pkr_message.npk = std::vector<uint8_t>(l_npk, 0);
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for (uint32_t k = 0; k > l_npk; k++)
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{
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d_osnma_data.d_dsm_pkr_message.npk[k] = dsm_msg[k + 130];
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}
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uint32_t l_dp = dsm_msg.size();
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uint32_t l_pd = l_dp - 130 - l_npk;
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d_osnma_data.d_dsm_pkr_message.p_dp = std::vector<uint8_t>(l_pd, 0);
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for (uint32_t k = 0; k > l_pd; k++)
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{
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d_osnma_data.d_dsm_pkr_message.p_dp[k] = dsm_msg[l_dp - l_pd + k];
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}
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}
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}
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@ -24,8 +24,9 @@
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#include "osnma_data.h" // for OSNMA_data
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#include <gnuradio/block.h> // for gr::block
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#include <pmt/pmt.h> // for pmt::pmt_t
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#include <array> // for std::array
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#include <memory> // for std::shared_ptr
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#include <vector>
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/** \addtogroup Core
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* \{ */
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@ -54,10 +55,15 @@ private:
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osnma_msg_receiver();
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void msg_handler_osnma(const pmt::pmt_t& msg);
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void process_osnma_message(std::shared_ptr<OSNMA_msg> osnma_msg);
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void process_osnma_message(const std::shared_ptr<OSNMA_msg>& osnma_msg);
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void read_nma_header(uint8_t nma_header);
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void read_dsm_header(uint8_t dsm_header);
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void read_dsm_block(const std::shared_ptr<OSNMA_msg>& osnma_msg);
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void process_dsm_message(const std::shared_ptr<OSNMA_msg>& osnma_msg, const std::vector<uint8_t>& dsm_msg);
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std::array<std::array<uint8_t, 256>, 16> d_dsm_message{};
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std::array<std::array<uint8_t, 16>, 16> d_dsm_id_received{};
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std::array<uint16_t, 16> d_number_of_blocks{};
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OSNMA_data d_osnma_data{};
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bool d_new_data{false};
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};
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@ -42,6 +42,36 @@ struct dsm_header
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uint8_t dsm_block_id;
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};
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struct DSM_PKR_message
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{
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uint8_t nb_dp;
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uint8_t mid;
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std::array<uint8_t, 128> itn; // bitset<1024>
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uint8_t npkt;
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uint8_t npktid;
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std::vector<uint8_t> npk;
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std::vector<uint8_t> p_dp;
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};
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struct DSM_KROOT_message
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{
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uint8_t nb_dk;
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uint8_t pkid;
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uint8_t cidkr;
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uint8_t reserved1;
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uint8_t hf;
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uint8_t mf;
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uint8_t ks;
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uint8_t ts;
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uint8_t maclt;
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uint8_t reserved;
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uint16_t wn_k;
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uint8_t towh_k;
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uint64_t alpha;
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std::vector<uint8_t> kroot;
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std::vector<uint8_t> ds;
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std::vector<uint8_t> p_dk;
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};
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/*!
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* \brief This class handles ONSMA data
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@ -51,16 +81,10 @@ class OSNMA_data
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{
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public:
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OSNMA_data() = default;
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std::string itn; // bitset<1024>
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std::string npk;
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std::string p_dp;
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nma_header d_nma_header;
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dsm_header d_dsm_header;
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uint8_t nb_dp;
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uint8_t mid;
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uint8_t npkt;
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uint8_t npktid;
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DSM_PKR_message d_dsm_pkr_message;
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DSM_KROOT_message d_dsm_kroot_message;
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};
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