// Copyright 2020 Lukas Haubaum // // Licensed under the GNU Affero General Public License, Version 3; // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // https://www.gnu.org/licenses/agpl-3.0.html // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #include #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "esp_log.h" #include "esp_partition.h" #include "ena-storage.h" #include "ena-crypto.h" #define BLOCK_SIZE (4096) const int ENA_STORAGE_TEK_COUNT_ADDRESS = (ENA_STORAGE_START_ADDRESS); // starting address for TEK COUNT const int ENA_STORAGE_TEK_START_ADDRESS = (ENA_STORAGE_TEK_COUNT_ADDRESS + sizeof(uint32_t)); const int ENA_STORAGE_EXPOSURE_INFORMATION_COUNT_ADDRESS = (ENA_STORAGE_TEK_START_ADDRESS + sizeof(ena_tek_t) * ENA_STORAGE_TEK_MAX); const int ENA_STORAGE_EXPOSURE_INFORMATION_START_ADDRESS = (ENA_STORAGE_EXPOSURE_INFORMATION_COUNT_ADDRESS + sizeof(uint32_t)); const int ENA_STORAGE_TEMP_BEACONS_COUNT_ADDRESS = (ENA_STORAGE_EXPOSURE_INFORMATION_COUNT_ADDRESS + sizeof(ena_exposure_information_t) * ENA_STORAGE_EXPOSURE_INFORMATION_MAX); const int ENA_STORAGE_TEMP_BEACONS_START_ADDRESS = (ENA_STORAGE_TEMP_BEACONS_COUNT_ADDRESS + sizeof(uint32_t)); const int ENA_STORAGE_BEACONS_COUNT_ADDRESS = (ENA_STORAGE_TEMP_BEACONS_START_ADDRESS + sizeof(ena_beacon_t) * ENA_STORAGE_TEMP_BEACONS_MAX); const int ENA_STORAGE_BEACONS_START_ADDRESS = (ENA_STORAGE_BEACONS_COUNT_ADDRESS + sizeof(uint32_t)); void ena_storage_read(size_t address, void *data, size_t size) { const esp_partition_t *partition = esp_partition_find_first( ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_ANY, ENA_STORAGE_PARTITION_NAME); assert(partition); ESP_ERROR_CHECK(esp_partition_read(partition, address, data, size)); vTaskDelay(1); ESP_LOGD(ENA_STORAGE_LOG, "read data at %u", address); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, data, size, ESP_LOG_DEBUG); } void ena_storage_write(size_t address, void *data, size_t size) { const int block_num = address / BLOCK_SIZE; // check for overflow if (address + size <= (block_num + 1) * BLOCK_SIZE) { const esp_partition_t *partition = esp_partition_find_first( ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_ANY, ENA_STORAGE_PARTITION_NAME); assert(partition); const int block_start = block_num * BLOCK_SIZE; const int block_address = address - block_start; void *buffer = malloc(BLOCK_SIZE); if (buffer == NULL) { ESP_LOGE(ENA_STORAGE_LOG, "Warning %s malloc low memory", "buffer"); return; } ESP_LOGD(ENA_STORAGE_LOG, "read block %d buffer: start %d size %u", block_num, block_start, BLOCK_SIZE); ESP_ERROR_CHECK(esp_partition_read(partition, block_start, buffer, BLOCK_SIZE)); vTaskDelay(1); ESP_ERROR_CHECK(esp_partition_erase_range(partition, block_start, BLOCK_SIZE)); memcpy((buffer + block_address), data, size); ESP_ERROR_CHECK(esp_partition_write(partition, block_start, buffer, BLOCK_SIZE)); free(buffer); ESP_LOGD(ENA_STORAGE_LOG, "write data at %u", address); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, data, size, ESP_LOG_DEBUG); } else { ESP_LOGD(ENA_STORAGE_LOG, "overflow block at address %u with size %d (block %d)", address, size, block_num); const size_t block2_address = (block_num + 1) * BLOCK_SIZE; const size_t data2_size = address + size - block2_address; const size_t data1_size = size - data2_size; ESP_LOGD(ENA_STORAGE_LOG, "block1_address %d, block1_size %d (block %d)", address, data1_size, block_num); ESP_LOGD(ENA_STORAGE_LOG, "block2_address %d, block2_size %d (block %d)", block2_address, data2_size, block_num + 1); void *data1 = malloc(data1_size); memcpy(data1, data, data1_size); ena_storage_write(address, data1, data1_size); free(data1); void *data2 = malloc(data2_size); memcpy(data2, (data + data1_size), data2_size); ena_storage_write(block2_address, data2, data2_size); free(data2); } } void ena_storage_shift_delete(size_t address, size_t end_address, size_t size) { int block_num_start = address / BLOCK_SIZE; // check for overflow if (address + size <= (block_num_start + 1) * BLOCK_SIZE) { const esp_partition_t *partition = esp_partition_find_first( ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_ANY, ENA_STORAGE_PARTITION_NAME); assert(partition); int block_num_end = end_address / BLOCK_SIZE; size_t block_start = address - block_num_start * BLOCK_SIZE; while (block_num_end >= block_num_start) { void *buffer = malloc(BLOCK_SIZE); ESP_ERROR_CHECK(esp_partition_read(partition, block_num_start * BLOCK_SIZE, buffer, BLOCK_SIZE)); vTaskDelay(1); // shift inside buffer ESP_LOGD(ENA_STORAGE_LOG, "shift block %d from %u to %u with size %u", block_num_start, (block_start + size), block_start, (BLOCK_SIZE - block_start - size)); memcpy((buffer + block_start), (buffer + block_start + size), BLOCK_SIZE - block_start - size); if (block_num_end > block_num_start) { void *buffer_next_block = malloc(BLOCK_SIZE); ESP_ERROR_CHECK(esp_partition_read(partition, (block_num_start + 1) * BLOCK_SIZE, buffer_next_block, BLOCK_SIZE)); vTaskDelay(1); // shift from next block ESP_LOGD(ENA_STORAGE_LOG, "shift next block size %u", size); memcpy((buffer + BLOCK_SIZE - size), buffer_next_block, size); free(buffer_next_block); } ESP_ERROR_CHECK(esp_partition_erase_range(partition, block_num_start * BLOCK_SIZE, BLOCK_SIZE)); ESP_ERROR_CHECK(esp_partition_write(partition, block_num_start * BLOCK_SIZE, buffer, BLOCK_SIZE)); free(buffer); block_num_start++; block_start = 0; } } else { ESP_LOGD(ENA_STORAGE_LOG, "overflow block at address %u with size %d (block %d)", address, size, block_num_start); const size_t block1_address = address; const size_t block2_address = (block_num_start + 1) * BLOCK_SIZE; const size_t data2_size = address + size - block2_address; const size_t data1_size = size - data2_size; ena_storage_shift_delete(block1_address, block2_address, data1_size); ena_storage_shift_delete(block2_address, end_address - data1_size, data2_size); } } uint32_t ena_storage_read_last_tek(ena_tek_t *tek) { uint32_t tek_count = 0; ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint32_t)); if (tek_count < 1) { return 0; } uint8_t index = (tek_count % ENA_STORAGE_TEK_MAX) - 1; ena_storage_read(ENA_STORAGE_TEK_START_ADDRESS + index * sizeof(ena_tek_t), tek, sizeof(ena_tek_t)); ESP_LOGD(ENA_STORAGE_LOG, "read last tek %u:", tek->enin); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, tek->key_data, ENA_KEY_LENGTH, ESP_LOG_DEBUG); return tek_count; } void ena_storage_write_tek(ena_tek_t *tek) { uint32_t tek_count = 0; ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint32_t)); uint8_t index = (tek_count % ENA_STORAGE_TEK_MAX); ena_storage_write(ENA_STORAGE_TEK_START_ADDRESS + index * sizeof(ena_tek_t), tek, sizeof(ena_tek_t)); tek_count++; ena_storage_write(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint32_t)); ESP_LOGD(ENA_STORAGE_LOG, "write tek: ENIN %u", tek->enin); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, tek->key_data, ENA_KEY_LENGTH, ESP_LOG_DEBUG); } uint32_t ena_storage_exposure_information_count(void) { uint32_t count = 0; ena_storage_read(ENA_STORAGE_EXPOSURE_INFORMATION_COUNT_ADDRESS, &count, sizeof(uint32_t)); ESP_LOGD(ENA_STORAGE_LOG, "read exposure information count: %u", count); return count; } void ena_storage_get_exposure_information(uint32_t index, ena_exposure_information_t *exposure_info) { ena_storage_read(ENA_STORAGE_EXPOSURE_INFORMATION_START_ADDRESS + index * sizeof(ena_exposure_information_t), exposure_info, sizeof(ena_exposure_information_t)); ESP_LOGD(ENA_STORAGE_LOG, "read exporuse information: day %u, duration %d", exposure_info->day, exposure_info->duration_minutes); } void ena_storage_add_exposure_information(ena_exposure_information_t *exposure_info) { uint32_t count = ena_storage_exposure_information_count(); ena_storage_write(ENA_STORAGE_EXPOSURE_INFORMATION_START_ADDRESS + count * sizeof(ena_exposure_information_t), exposure_info, sizeof(ena_exposure_information_t)); count++; ena_storage_write(ENA_STORAGE_EXPOSURE_INFORMATION_COUNT_ADDRESS, &count, sizeof(uint32_t)); ESP_LOGD(ENA_STORAGE_LOG, "write exposure info: day %u, duration %d", exposure_info->day, exposure_info->duration_minutes); } uint32_t ena_storage_temp_beacons_count(void) { uint32_t count = 0; ena_storage_read(ENA_STORAGE_TEMP_BEACONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); ESP_LOGD(ENA_STORAGE_LOG, "read temp beacons count: %u", count); return count; } void ena_storage_get_temp_beacon(uint32_t index, ena_beacon_t *beacon) { ena_storage_read(ENA_STORAGE_TEMP_BEACONS_START_ADDRESS + index * sizeof(ena_beacon_t), beacon, sizeof(ena_beacon_t)); ESP_LOGD(ENA_STORAGE_LOG, "read temp beacon: first %u, last %u and rssi %d", beacon->timestamp_first, beacon->timestamp_last, beacon->rssi); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->aem, ENA_AEM_METADATA_LENGTH, ESP_LOG_DEBUG); } uint32_t ena_storage_add_temp_beacon(ena_beacon_t *beacon) { uint32_t count = ena_storage_temp_beacons_count(); // overwrite older temporary beacons?! uint8_t index = count % ENA_STORAGE_TEMP_BEACONS_MAX; ena_storage_set_temp_beacon(index, beacon); ESP_LOGD(ENA_STORAGE_LOG, "add temp beacon at %u: first %u, last %u and rssi %d", index, beacon->timestamp_first, beacon->timestamp_last, beacon->rssi); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->aem, ENA_AEM_METADATA_LENGTH, ESP_LOG_DEBUG); count++; ena_storage_write(ENA_STORAGE_TEMP_BEACONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); return count - 1; } void ena_storage_set_temp_beacon(uint32_t index, ena_beacon_t *beacon) { ena_storage_write(ENA_STORAGE_TEMP_BEACONS_START_ADDRESS + index * sizeof(ena_beacon_t), beacon, sizeof(ena_beacon_t)); ESP_LOGD(ENA_STORAGE_LOG, "set temp beacon at %u: first %u, last %u and rssi %d", index, beacon->timestamp_first, beacon->timestamp_last, beacon->rssi); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->aem, ENA_AEM_METADATA_LENGTH, ESP_LOG_DEBUG); } void ena_storage_remove_temp_beacon(uint32_t index) { uint32_t count = ena_storage_temp_beacons_count(); size_t address_from = ENA_STORAGE_TEMP_BEACONS_START_ADDRESS + index * sizeof(ena_beacon_t); size_t address_to = ENA_STORAGE_TEMP_BEACONS_START_ADDRESS + count * sizeof(ena_beacon_t); ena_storage_shift_delete(address_from, address_to, sizeof(ena_beacon_t)); count--; ena_storage_write(ENA_STORAGE_TEMP_BEACONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); ESP_LOGD(ENA_STORAGE_LOG, "remove temp beacon: %u", index); } uint32_t ena_storage_beacons_count(void) { uint32_t count = 0; ena_storage_read(ENA_STORAGE_BEACONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); ESP_LOGD(ENA_STORAGE_LOG, "read contancts count: %u", count); return count; } void ena_storage_get_beacon(uint32_t index, ena_beacon_t *beacon) { ena_storage_read(ENA_STORAGE_BEACONS_START_ADDRESS + index * sizeof(ena_beacon_t), beacon, sizeof(ena_beacon_t)); ESP_LOGD(ENA_STORAGE_LOG, "read beacon: first %u, last %u and rssi %d", beacon->timestamp_first, beacon->timestamp_last, beacon->rssi); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->aem, ENA_AEM_METADATA_LENGTH, ESP_LOG_DEBUG); } void ena_storage_add_beacon(ena_beacon_t *beacon) { ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); uint32_t count = ena_storage_beacons_count(); ena_storage_write(ENA_STORAGE_BEACONS_START_ADDRESS + count * sizeof(ena_beacon_t), beacon, sizeof(ena_beacon_t)); count++; ena_storage_write(ENA_STORAGE_BEACONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); ESP_LOGD(ENA_STORAGE_LOG, "write beacon: first %u, last %u and rssi %d", beacon->timestamp_first, beacon->timestamp_last, beacon->rssi); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, beacon->aem, ENA_AEM_METADATA_LENGTH, ESP_LOG_DEBUG); } void ena_storage_remove_beacon(uint32_t index) { uint32_t count = ena_storage_beacons_count(); size_t address_from = ENA_STORAGE_BEACONS_START_ADDRESS + index * sizeof(ena_beacon_t); size_t address_to = ENA_STORAGE_BEACONS_START_ADDRESS + count * sizeof(ena_beacon_t); ena_storage_shift_delete(address_from, address_to, sizeof(ena_beacon_t)); count--; ena_storage_write(ENA_STORAGE_BEACONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); ESP_LOGD(ENA_STORAGE_LOG, "remove beacon: %u", index); } void ena_storage_erase(void) { const esp_partition_t *partition = esp_partition_find_first( ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_ANY, ENA_STORAGE_PARTITION_NAME); assert(partition); ESP_ERROR_CHECK(esp_partition_erase_range(partition, 0, partition->size)); ESP_LOGI(ENA_STORAGE_LOG, "erased partition %s!", ENA_STORAGE_PARTITION_NAME); uint32_t count = 0; ena_storage_write(ENA_STORAGE_TEK_COUNT_ADDRESS, &count, sizeof(uint32_t)); ena_storage_write(ENA_STORAGE_EXPOSURE_INFORMATION_COUNT_ADDRESS, &count, sizeof(uint32_t)); ena_storage_write(ENA_STORAGE_TEMP_BEACONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); ena_storage_write(ENA_STORAGE_BEACONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); } void ena_storage_erase_tek(void) { uint32_t count = 0; ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &count, sizeof(uint32_t)); uint32_t stored = ENA_STORAGE_TEK_MAX; if (count < ENA_STORAGE_TEK_MAX) { stored = count; } size_t size = sizeof(uint32_t) + stored * sizeof(ena_tek_t); uint8_t *zeros = calloc(size, sizeof(uint8_t)); ena_storage_write(ENA_STORAGE_TEK_COUNT_ADDRESS, zeros, size); free(zeros); ESP_LOGI(ENA_STORAGE_LOG, "erased %d teks (size %u at %u)", stored, size, ENA_STORAGE_TEK_COUNT_ADDRESS); } void ena_storage_erase_exposure_information(void) { uint32_t count = ena_storage_exposure_information_count(); uint32_t stored = ENA_STORAGE_EXPOSURE_INFORMATION_MAX; if (count < ENA_STORAGE_EXPOSURE_INFORMATION_MAX) { stored = count; } size_t size = sizeof(uint32_t) + stored * sizeof(ena_exposure_information_t); uint8_t *zeros = calloc(size, sizeof(uint8_t)); ena_storage_write(ENA_STORAGE_EXPOSURE_INFORMATION_COUNT_ADDRESS, zeros, size); free(zeros); ESP_LOGI(ENA_STORAGE_LOG, "erased %d exposure information (size %u at %u)", stored, size, ENA_STORAGE_EXPOSURE_INFORMATION_COUNT_ADDRESS); } void ena_storage_erase_temporary_beacon(void) { uint32_t beacon_count = 0; ena_storage_read(ENA_STORAGE_TEMP_BEACONS_COUNT_ADDRESS, &beacon_count, sizeof(uint32_t)); uint32_t stored = ENA_STORAGE_TEMP_BEACONS_MAX; if (beacon_count < ENA_STORAGE_TEMP_BEACONS_MAX) { stored = beacon_count; } size_t size = sizeof(uint32_t) + stored * sizeof(ena_beacon_t); uint8_t *zeros = calloc(size, sizeof(uint8_t)); ena_storage_write(ENA_STORAGE_TEMP_BEACONS_COUNT_ADDRESS, zeros, size); free(zeros); ESP_LOGI(ENA_STORAGE_LOG, "erased %d temporary beacons (size %u at %u)", stored, size, ENA_STORAGE_TEMP_BEACONS_COUNT_ADDRESS); } void ena_storage_erase_beacon(void) { uint32_t beacon_count = 0; ena_storage_read(ENA_STORAGE_BEACONS_COUNT_ADDRESS, &beacon_count, sizeof(uint32_t)); size_t size = sizeof(uint32_t) + beacon_count * sizeof(ena_beacon_t); uint8_t *zeros = calloc(size, sizeof(uint8_t)); ena_storage_write(ENA_STORAGE_BEACONS_COUNT_ADDRESS, zeros, size); free(zeros); ESP_LOGI(ENA_STORAGE_LOG, "erased %d beacons (size %u at %u)", beacon_count, size, ENA_STORAGE_BEACONS_COUNT_ADDRESS); } void ena_storage_dump_hash_array(uint8_t *data, size_t size) { for (int i = 0; i < size; i++) { if (i == 0) { printf("%02x", data[i]); } else { printf(" %02x", data[i]); } } } void ena_storage_dump_teks(void) { ena_tek_t tek; uint32_t tek_count = 0; ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint32_t)); uint32_t stored = ENA_STORAGE_TEK_MAX; if (tek_count < ENA_STORAGE_TEK_MAX) { stored = tek_count; } ESP_LOGD(ENA_STORAGE_LOG, "%u TEKs (%u stored)\n", tek_count, stored); printf("#,enin,tek,rolling_period\n"); for (int i = 0; i < stored; i++) { size_t address = ENA_STORAGE_TEK_START_ADDRESS + i * sizeof(ena_tek_t); ena_storage_read(address, &tek, sizeof(ena_tek_t)); printf("%d,%u,", i, tek.enin); ena_storage_dump_hash_array(tek.key_data, ENA_KEY_LENGTH); printf(",%u\n", tek.rolling_period); } } void ena_storage_dump_exposure_information(void) { ena_exposure_information_t exposure_info; uint32_t exposure_information_count = ena_storage_exposure_information_count(); uint32_t stored = ENA_STORAGE_EXPOSURE_INFORMATION_MAX; if (exposure_information_count < ENA_STORAGE_EXPOSURE_INFORMATION_MAX) { stored = exposure_information_count; } ESP_LOGD(ENA_STORAGE_LOG, "%u exposure information (%u stored)\n", exposure_information_count, stored); printf("#,day,typical_attenuation,min_attenuation,duration_minutes,report_type\n"); for (int i = 0; i < stored; i++) { size_t address = ENA_STORAGE_EXPOSURE_INFORMATION_START_ADDRESS + i * sizeof(ena_exposure_information_t); ena_storage_read(address, &exposure_info, sizeof(ena_exposure_information_t)); printf("%d,%u,%d,%d,%d,%d\n", i, exposure_info.day, exposure_info.typical_attenuation, exposure_info.min_attenuation, exposure_info.duration_minutes, exposure_info.report_type); } } void ena_storage_dump_temp_beacons(void) { ena_beacon_t beacon; uint32_t beacon_count = 0; ena_storage_read(ENA_STORAGE_TEMP_BEACONS_COUNT_ADDRESS, &beacon_count, sizeof(uint32_t)); uint32_t stored = ENA_STORAGE_TEMP_BEACONS_MAX; if (beacon_count < ENA_STORAGE_TEMP_BEACONS_MAX) { stored = beacon_count; } ESP_LOGD(ENA_STORAGE_LOG, "%u temporary beacons (%u stored)\n", beacon_count, stored); printf("#,timestamp_first,timestamp_last,rpi,aem,rssi\n"); for (int i = 0; i < stored; i++) { ena_storage_get_temp_beacon(i, &beacon); printf("%d,%u,%u,", i, beacon.timestamp_first, beacon.timestamp_last); ena_storage_dump_hash_array(beacon.rpi, ENA_KEY_LENGTH); printf(","); ena_storage_dump_hash_array(beacon.aem, ENA_AEM_METADATA_LENGTH); printf(",%d\n", beacon.rssi); } } void ena_storage_dump_beacons(void) { ena_beacon_t beacon; uint32_t beacon_count = 0; ena_storage_read(ENA_STORAGE_BEACONS_COUNT_ADDRESS, &beacon_count, sizeof(uint32_t)); ESP_LOGD(ENA_STORAGE_LOG, "%u beacons\n", beacon_count); printf("#,timestamp_first,timestamp_last,rpi,aem,rssi\n"); for (int i = 0; i < beacon_count; i++) { ena_storage_get_beacon(i, &beacon); printf("%d,%u,%u,", i, beacon.timestamp_first, beacon.timestamp_last); ena_storage_dump_hash_array(beacon.rpi, ENA_KEY_LENGTH); printf(","); ena_storage_dump_hash_array(beacon.aem, ENA_AEM_METADATA_LENGTH); printf(",%d\n", beacon.rssi); } }