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fixed temp. detection deletion (wrong size), added documentation

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Lurkars 2020-07-14 20:54:14 +02:00
parent 5b1c6e2c76
commit 1eedea1b9a
21 changed files with 793 additions and 259 deletions
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47
.gitignore vendored
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@ -2,11 +2,6 @@
*.o *.o
*.pyc *.pyc
# gtags
GTAGS
GRTAGS
GPATH
# emacs # emacs
.dir-locals.el .dir-locals.el
@ -21,47 +16,8 @@ GPATH
# MacOS directory files # MacOS directory files
.DS_Store .DS_Store
# Example project files
examples/**/sdkconfig
examples/**/sdkconfig.old
examples/**/build
# Doc build artifacts # Doc build artifacts
docs/_build/ docs
docs/doxygen_sqlite3.db
# Downloaded font files
docs/_static/DejaVuSans.ttf
docs/_static/NotoSansSC-Regular.otf
# Unit test app files
tools/unit-test-app/sdkconfig
tools/unit-test-app/sdkconfig.old
tools/unit-test-app/build
tools/unit-test-app/builds
tools/unit-test-app/output
tools/unit-test-app/test_configs
# Unit Test CMake compile log folder
log_ut_cmake
# test application build files
tools/test_apps/**/build
tools/test_apps/**/sdkconfig
tools/test_apps/**/sdkconfig.old
# IDF monitor test
tools/test_idf_monitor/outputs
TEST_LOGS
# gcov coverage reports
*.gcda
*.gcno
coverage.info
coverage_report/
test_multi_heap_host
# VS Code Settings # VS Code Settings
.vscode/ .vscode/
@ -84,6 +40,5 @@ build
# lock files for examples and components # lock files for examples and components
dependencies.lock dependencies.lock
build/
sdkconfig sdkconfig
sdkconfig.old sdkconfig.old

13
main/ena-bluetooth-advertise.c
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@ -1,3 +1,16 @@
// 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 "esp_log.h" #include "esp_log.h"
#include "esp_bt.h" #include "esp_bt.h"

49
main/ena-bluetooth-advertise.h
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@ -1,15 +1,18 @@
/** // Copyright 2020 Lukas Haubaum
* provide bluetooth part of Exposure Notification API v1.2 as defined by Apple/Google //
* // Licensed under the GNU Affero General Public License, Version 3;
* Source documents: // you may not use this file except in compliance with the License.
* // You may obtain a copy of the License at
* https://blog.google/documents/70/Exposure_Notification_-_Bluetooth_Specification_v1.2.2.pdf
* // https://www.gnu.org/licenses/agpl-3.0.html
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-BluetoothSpecificationv1.2.pdf //
* // 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.
#ifndef _ena_BLUETOOTH_ADVERTISE_H_ #ifndef _ena_BLUETOOTH_ADVERTISE_H_
#define _ena_BLUETOOTH_ADVERTISE_H_ #define _ena_BLUETOOTH_ADVERTISE_H_
@ -17,12 +20,32 @@
#include "esp_gap_ble_api.h" #include "esp_gap_ble_api.h"
#define ENA_ADVERTISE_LOG "ESP-ENA-advertise" // TAG for Logging #define ENA_ADVERTISE_LOG "ESP-ENA-advertise" // TAG for Logging
#define ENA_BLUETOOTH_TAG_DATA (0x1A) #define ENA_BLUETOOTH_TAG_DATA (0x1A) // Data for BLE payload TAG
/**
* @brief Start BLE advertising
*/
void ena_bluetooth_advertise_start(void); void ena_bluetooth_advertise_start(void);
/**
* @brief Set payload for BLE advertising
*
* This will set the payload for based on given ENIN and TEK.
*
* Source documents (Section: Advertising Payload)
*
* https://blog.google/documents/70/Exposure_Notification_-_Bluetooth_Specification_v1.2.2.pdf
*
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-BluetoothSpecificationv1.2.pdf
*
* @param[in] enin ENIN defining the start of the tek vadility. This should be the ENIN for the current timestamp
* @param[in] tek pointer to the TEK used to encrypt the payload.
*/
void ena_bluetooth_advertise_set_payload(uint32_t enin, uint8_t *tek); void ena_bluetooth_advertise_set_payload(uint32_t enin, uint8_t *tek);
/**
* @brief Stop BLE advertising
*/
void ena_bluetooth_advertise_stop(void); void ena_bluetooth_advertise_stop(void);
#endif #endif

14
main/ena-bluetooth-scan.c
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@ -1,8 +1,22 @@
// 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 <string.h> #include <string.h>
#include <time.h> #include <time.h>
#include "esp_log.h" #include "esp_log.h"
#include "ena-crypto.h"
#include "ena-detection.h" #include "ena-detection.h"
#include "ena-bluetooth-scan.h" #include "ena-bluetooth-scan.h"

58
main/ena-bluetooth-scan.h
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@ -1,15 +1,16 @@
/** // Copyright 2020 Lukas Haubaum
* provide bluetooth scanning part of Exposure Notification API v1.2 as defined by Apple/Google //
* // Licensed under the GNU Affero General Public License, Version 3;
* Source documents: // you may not use this file except in compliance with the License.
* // You may obtain a copy of the License at
* https://blog.google/documents/70/Exposure_Notification_-_Bluetooth_Specification_v1.2.2.pdf
* // https://www.gnu.org/licenses/agpl-3.0.html
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-BluetoothSpecificationv1.2.pdf //
* // 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.
#ifndef _ena_BLUETOOTH_SCAN_H_ #ifndef _ena_BLUETOOTH_SCAN_H_
#define _ena_BLUETOOTH_SCAN_H_ #define _ena_BLUETOOTH_SCAN_H_
@ -21,19 +22,46 @@
#include "esp_gap_ble_api.h" #include "esp_gap_ble_api.h"
/**
* @brief status of BLE scan
*/
typedef enum typedef enum
{ {
ENA_SCAN_STATUS_SCANNING = 0, ENA_SCAN_STATUS_SCANNING = 0, // scan is running
ENA_SCAN_STATUS_NOT_SCANNING, ENA_SCAN_STATUS_NOT_SCANNING, // scan is not running
ENA_SCAN_STATUS_WAITING, ENA_SCAN_STATUS_WAITING, // scan is not running but stopped manually
} ena_bluetooth_scan_status; } ena_bluetooth_scan_status;
/**
* @brief initialize the BLE scanning
*
*/
void ena_bluetooth_scan_init(void); void ena_bluetooth_scan_init(void);
/**
* @brief start BLE scanning for a given duration
*
* Source documents (Section: Scanning Behavior)
*
* https://blog.google/documents/70/Exposure_Notification_-_Bluetooth_Specification_v1.2.2.pdf
*
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-BluetoothSpecificationv1.2.pdf
*
* @param[in] duration duration of the scan in seconds
*/
void ena_bluetooth_scan_start(uint32_t duration); void ena_bluetooth_scan_start(uint32_t duration);
/**
* @brief stop a running BLE scanning
*/
void ena_bluetooth_scan_stop(void); void ena_bluetooth_scan_stop(void);
/**
* @brief return the current scanning status
*
* @return
* current scan status
*/
int ena_bluetooth_scan_get_status(void); int ena_bluetooth_scan_get_status(void);
#endif #endif

12
main/ena-crypto.c
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@ -1,4 +1,16 @@
// 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 "mbedtls/md.h" #include "mbedtls/md.h"
#include "mbedtls/aes.h" #include "mbedtls/aes.h"
#include "mbedtls/hkdf.h" #include "mbedtls/hkdf.h"

101
main/ena-crypto.h
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@ -1,16 +1,16 @@
// 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
* provide cryptographic part of Exposure Notification API v1.2 as defined by Apple/Google //
* // Unless required by applicable law or agreed to in writing, software
* Source documents: // distributed under the License is distributed on an "AS IS" BASIS,
* // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* https://blog.google/documents/69/Exposure_Notification_-_Cryptography_Specification_v1.2.1.pdf // See the License for the specific language governing permissions and
* // limitations under the License.
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-CryptographySpecificationv1.2.pdf
*
*
*
*/
#ifndef _ena_CRYPTO_H_ #ifndef _ena_CRYPTO_H_
#define _ena_CRYPTO_H_ #define _ena_CRYPTO_H_
@ -23,37 +23,98 @@
#include <stdio.h> #include <stdio.h>
/** /**
* initialize crypto (setup entropy for key generation) * @brief initialize cryptography
*
* This initialize the cryptography by setting up entropy.
*/ */
void ena_crypto_init(void); void ena_crypto_init(void);
/** /**
* Calculate ENIntervalNumber (ENIN) for given UNIX timestamp * @brief calculate ENIntervalNumber (ENIN) for given UNIX timestamp
*
* Source documents (Section: ENIntervalNumber)
*
* https://blog.google/documents/69/Exposure_Notification_-_Cryptography_Specification_v1.2.1.pdf
*
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-CryptographySpecificationv1.2.pdf
*
*
* @param[in] unix_timestamp UNIX Timestamp to calculate ENIN for
*
* @return
* ENIN for given timestamp
*/ */
uint32_t ena_crypto_enin(uint32_t seconds); uint32_t ena_crypto_enin(uint32_t unix_timestamp);
/** /**
* calculate a new random Temporary Exposure Key (TEK) * @brief calculate a new random Temporary Exposure Key (TEK)
*
* Source documents (Section: Temporary Exposure Key)
*
* https://blog.google/documents/69/Exposure_Notification_-_Cryptography_Specification_v1.2.1.pdf
*
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-CryptographySpecificationv1.2.pdf
*
* @param[out] tek pointer to the new TEK
*/ */
void ena_crypto_tek(uint8_t *tek); void ena_crypto_tek(uint8_t *tek);
/** /**
* calculate a new Rolling Proximity Identifier Key (RPIK) with given TEK * @brief calculate a new Rolling Proximity Identifier Key (RPIK) with given TEK
*
* Source documents (Section: Rolling Proximity Identifier Key)
*
* https://blog.google/documents/69/Exposure_Notification_-_Cryptography_Specification_v1.2.1.pdf
*
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-CryptographySpecificationv1.2.pdf
*
* @param[out] rpik pointer to the new RPIK
* @param[in] tek TEK for calculating RPIK
*/ */
void ena_crypto_rpik(uint8_t *rpik, uint8_t *tek); void ena_crypto_rpik(uint8_t *rpik, uint8_t *tek);
/** /**
* calculate a new Rolling Proximity Identifier with given RPIK and ENIN * @brief calculate a new Rolling Proximity Identifier with given RPIK and ENIN
*
* Source documents (Section: Rolling Proximity Identifier)
*
* https://blog.google/documents/69/Exposure_Notification_-_Cryptography_Specification_v1.2.1.pdf
*
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-CryptographySpecificationv1.2.pdf
*
* @param[out] rpi pointer to the new RPI
* @param[in] rpik RPIK for encrypting RPI
* @param[in] enin ENIN to encrypt in RPI
*/ */
void ena_crypto_rpi(uint8_t *rpi, uint8_t *rpik, uint32_t enin); void ena_crypto_rpi(uint8_t *rpi, uint8_t *rpik, uint32_t enin);
/** /**
* calculate a new Associated Encrypted Metadata Key (AEMK) with given TEK * @brief calculate a new Associated Encrypted Metadata Key (AEMK) with given TEK
*
* Source documents (Section: Associated Encrypted Metadata Key)
*
* https://blog.google/documents/69/Exposure_Notification_-_Cryptography_Specification_v1.2.1.pdf
*
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-CryptographySpecificationv1.2.pdf
*
* @param[out] aemk pointer to the new AEMK
* @param[in] tek TEK for calculating AEMK
*/ */
void ena_crypto_aemk(uint8_t *aemk, uint8_t *tek); void ena_crypto_aemk(uint8_t *aemk, uint8_t *tek);
/** /**
* create Associated Encrypted Metadata (AEM) with given AEMK along the RPI * @brief create Associated Encrypted Metadata (AEM) with given AEMK along the RPI
*
* Source documents (Section: Associated Encrypted Metadata)
*
* https://blog.google/documents/69/Exposure_Notification_-_Cryptography_Specification_v1.2.1.pdf
*
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-CryptographySpecificationv1.2.pdf
*
* @param[out] aem pointer to the new AEM
* @param[in] aemk AEMK for encrypting AEM
* @param[in] rpi RPI for encrypting AEM
* @param[in] power_level BLE power level to encrypt in AEM
*/ */
void ena_crypto_aem(uint8_t *aem, uint8_t *aemk, uint8_t *rpi, uint8_t power_level); void ena_crypto_aem(uint8_t *aem, uint8_t *aemk, uint8_t *rpi, uint8_t power_level);

62
main/ena-datastructures.h
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@ -1,8 +1,16 @@
/** // Copyright 2020 Lukas Haubaum
* provide data structure models of Exposure Notification API //
* // 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.
#ifndef _ena_DATASTRUCTURES_H_ #ifndef _ena_DATASTRUCTURES_H_
#define _ena_DATASTRUCTURES_H_ #define _ena_DATASTRUCTURES_H_
@ -10,6 +18,11 @@
#include <stdio.h> #include <stdio.h>
#include "ena-crypto.h" #include "ena-crypto.h"
/**
* @brief different risk levels
*
* not used for now
*/
typedef enum typedef enum
{ {
RISK_LEVEL_INVALID = 0, RISK_LEVEL_INVALID = 0,
@ -23,7 +36,11 @@ typedef enum
RISK_LEVEL_HIGHEST, RISK_LEVEL_HIGHEST,
} ena_risklevel_t; } ena_risklevel_t;
// maybe used later /**
* @brief configuration for risk score calculation
*
* not used for now
*/
typedef struct typedef struct
{ {
int minimum_risk_score; int minimum_risk_score;
@ -38,28 +55,37 @@ typedef struct
uint8_t duration_at_attenuation_thresholds[2]; uint8_t duration_at_attenuation_thresholds[2];
} __packed ena_config_t; } __packed ena_config_t;
/**
* @brief structure for TEK
*/
typedef struct typedef struct
{ {
uint8_t key_data[ENA_KEY_LENGTH]; uint8_t key_data[ENA_KEY_LENGTH]; // key data for encryption
uint32_t enin; uint32_t enin; // ENIN marking start of validity
uint8_t rolling_period; uint8_t rolling_period; // period after validity start to mark key as expired
} __packed ena_tek_t; } __packed ena_tek_t;
/**
* @brief sturcture for a temporary detection
*/
typedef struct typedef struct
{ {
uint8_t rpi[ENA_KEY_LENGTH]; uint8_t rpi[ENA_KEY_LENGTH]; // received RPI of detection
uint8_t aem[ENA_AEM_METADATA_LENGTH]; uint8_t aem[ENA_AEM_METADATA_LENGTH]; // received AEM of detection
uint32_t timestamp_first; uint32_t timestamp_first; // timestamp of first recognition
uint32_t timestamp_last; uint32_t timestamp_last; // timestamp of last recognition
int rssi; int rssi; // last measured RSSI
} __packed ena_temp_detection_t; } __packed ena_temp_detection_t;
/**
* @brief sturcture for a detection
*/
typedef struct typedef struct
{ {
uint8_t rpi[ENA_KEY_LENGTH]; uint8_t rpi[ENA_KEY_LENGTH]; // received RPI of detection
uint8_t aem[ENA_AEM_METADATA_LENGTH]; uint8_t aem[ENA_AEM_METADATA_LENGTH]; // received AEM of detection
uint32_t timestamp; uint32_t timestamp; // timestamp of last recognition
int rssi; int rssi; // last measured RSSI
} __packed ena_detection_t; } __packed ena_detection_t;
#endif #endif

24
main/ena-detection.c
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@ -1,3 +1,16 @@
// 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 <string.h> #include <string.h>
#include "esp_log.h" #include "esp_log.h"
@ -9,7 +22,7 @@
#include "ena-detection.h" #include "ena-detection.h"
static uint32_t temp_detections_count = 0; static uint32_t temp_detections_count = 0;
static ena_temp_detection_t temp_detections[ENA_STOARGE_TEMP_DETECTIONS_MAX]; static ena_temp_detection_t temp_detections[ENA_STORAGE_TEMP_DETECTIONS_MAX];
ena_detection_t ena_detections_convert(ena_temp_detection_t temp_detection) ena_detection_t ena_detections_convert(ena_temp_detection_t temp_detection)
{ {
@ -36,7 +49,7 @@ int ena_get_temp_detection_index(uint8_t *rpi, uint8_t *aem)
void ena_detections_temp_refresh(uint32_t unix_timestamp) void ena_detections_temp_refresh(uint32_t unix_timestamp)
{ {
for (int i = 0; i < temp_detections_count; i++) for (int i = temp_detections_count - 1; i >= 0; i--)
{ {
// check for treshold and add permanent detection // check for treshold and add permanent detection
if (temp_detections[i].timestamp_last - temp_detections[i].timestamp_first >= ENA_DETECTION_TRESHOLD) if (temp_detections[i].timestamp_last - temp_detections[i].timestamp_first >= ENA_DETECTION_TRESHOLD)
@ -44,7 +57,7 @@ void ena_detections_temp_refresh(uint32_t unix_timestamp)
ESP_LOGD(ENA_DETECTION_LOG, "create detection after treshold"); ESP_LOGD(ENA_DETECTION_LOG, "create detection after treshold");
ESP_LOG_BUFFER_HEXDUMP(ENA_DETECTION_LOG, temp_detections[i].rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_DETECTION_LOG, temp_detections[i].rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG);
ena_detection_t detection = ena_detections_convert(temp_detections[i]); ena_detection_t detection = ena_detections_convert(temp_detections[i]);
ena_storage_write_detection(&detection); ena_storage_add_detection(&detection);
ena_storage_remove_temp_detection(i); ena_storage_remove_temp_detection(i);
} }
else else
@ -60,7 +73,7 @@ void ena_detections_temp_refresh(uint32_t unix_timestamp)
temp_detections_count = ena_storage_temp_detections_count(); temp_detections_count = ena_storage_temp_detections_count();
for (int i = 0; i < temp_detections_count; i++) for (int i = 0; i < temp_detections_count; i++)
{ {
ena_storage_read_temp_detection(i, &temp_detections[i]); ena_storage_get_temp_detection(i, &temp_detections[i]);
} }
// DEBUG dump // DEBUG dump
@ -80,7 +93,7 @@ void ena_detection(uint32_t unix_timestamp, uint8_t *rpi, uint8_t *aem, int rssi
memcpy(temp_detections[temp_detections_count].aem, aem, ENA_AEM_METADATA_LENGTH); memcpy(temp_detections[temp_detections_count].aem, aem, ENA_AEM_METADATA_LENGTH);
temp_detections[temp_detections_count].rssi = rssi; temp_detections[temp_detections_count].rssi = rssi;
temp_detections[temp_detections_count].timestamp_last = unix_timestamp; temp_detections[temp_detections_count].timestamp_last = unix_timestamp;
detection_index = ena_storage_write_temp_detection(&temp_detections[temp_detections_count]); detection_index = ena_storage_add_temp_detection(&temp_detections[temp_detections_count]);
ESP_LOGD(ENA_DETECTION_LOG, "New temporary detection at %d with timestamp %u", temp_detections_count, unix_timestamp); ESP_LOGD(ENA_DETECTION_LOG, "New temporary detection at %d with timestamp %u", temp_detections_count, unix_timestamp);
ESP_LOG_BUFFER_HEX_LEVEL(ENA_DETECTION_LOG, rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEX_LEVEL(ENA_DETECTION_LOG, rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG);
@ -98,5 +111,6 @@ void ena_detection(uint32_t unix_timestamp, uint8_t *rpi, uint8_t *aem, int rssi
temp_detections[detection_index].rssi = rssi; temp_detections[detection_index].rssi = rssi;
temp_detections[detection_index].timestamp_last = unix_timestamp; temp_detections[detection_index].timestamp_last = unix_timestamp;
ESP_LOGD(ENA_DETECTION_LOG, "New Timestamp for temporary detection %d: %u", detection_index, unix_timestamp); ESP_LOGD(ENA_DETECTION_LOG, "New Timestamp for temporary detection %d: %u", detection_index, unix_timestamp);
ena_storage_set_temp_detection(temp_detections_count, &temp_detections[temp_detections_count]);
} }
} }

40
main/ena-detection.h
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@ -1,7 +1,16 @@
/** // Copyright 2020 Lukas Haubaum
* combine bluetooth and crypto parts to build EXPOSURE NOTIFICATION //
* // 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.
#ifndef _ena_DETECTION_H_ #ifndef _ena_DETECTION_H_
#define _ena_DETECTION_H_ #define _ena_DETECTION_H_
@ -10,10 +19,29 @@
#define ENA_DETECTION_TRESHOLD (300) // meet for longer than 5 minutes #define ENA_DETECTION_TRESHOLD (300) // meet for longer than 5 minutes
#include "ena-crypto.h" /**
* @brief check temporary detection for full detection or expiring
*
* This function checks all current temporary detections if the contact threshold is
* reached or if the temporary contact can be discarded.
*
* @param[in] unix_timestamp current time as UNIX timestamp to compate
*
*/
void ena_detections_temp_refresh(uint32_t unix_timestamp); void ena_detections_temp_refresh(uint32_t unix_timestamp);
/**
* @brief handle new detection received from a BLE scan
*
* This function gets called when a running BLE scan received a new ENA payload.
* On already detected RPI this will update just the timestamp and RSSI.
*
* @param[in] unix_timestamp UNIX timestamp when detection was made
* @param[in] rpi received RPI from scanned payload
* @param[in] aem received AEM from scanned payload
* @param[in] rssi measured RSSI on scan
*
*/
void ena_detection(uint32_t unix_timestamp, uint8_t *rpi, uint8_t *aem, int rssi); void ena_detection(uint32_t unix_timestamp, uint8_t *rpi, uint8_t *aem, int rssi);
#endif #endif

14
main/ena-interface-datetime.c
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@ -1,7 +1,21 @@
// 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 <stdio.h> #include <stdio.h>
#include "esp_log.h" #include "esp_log.h"
#include "ena-interface.h" #include "ena-interface.h"
#include "driver/touch_pad.h"
#include "ena-interface-menu.h" #include "ena-interface-menu.h"
#include "ena-interface-datetime.h" #include "ena-interface-datetime.h"

14
main/ena-interface-datetime.h
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@ -1,3 +1,17 @@
// 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.
#ifndef _ena_INTERFACE_DATETIME_H_ #ifndef _ena_INTERFACE_DATETIME_H_
#define _ena_INTERFACE_DATETIME_H_ #define _ena_INTERFACE_DATETIME_H_

14
main/ena-interface-menu.c
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@ -1,6 +1,20 @@
// 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 <stdio.h> #include <stdio.h>
#include "esp_log.h" #include "esp_log.h"
#include "driver/touch_pad.h"
#include "ena-interface.h" #include "ena-interface.h"
#include "ena-interface-datetime.h" #include "ena-interface-datetime.h"

14
main/ena-interface-menu.h
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@ -1,3 +1,17 @@
// 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.
#ifndef _ena_INTERFACE_MENU_H_ #ifndef _ena_INTERFACE_MENU_H_
#define _ena_INTERFACE_MENU_H_ #define _ena_INTERFACE_MENU_H_

59
main/ena-interface.c
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@ -1,4 +1,16 @@
// 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 <stdio.h> #include <stdio.h>
#include "freertos/FreeRTOS.h" #include "freertos/FreeRTOS.h"
#include "freertos/task.h" #include "freertos/task.h"
@ -10,7 +22,8 @@
static int interface_state = ENA_INTERFACE_STATE_IDLE; static int interface_state = ENA_INTERFACE_STATE_IDLE;
static bool touch_status[TOUCH_PAD_MAX] = {0}; static int touch_mapping[TOUCH_PAD_COUNT] = {0};
static bool touch_status[TOUCH_PAD_COUNT] = {0};
static ena_interface_touch_callback touch_callbacks[TOUCH_PAD_MAX]; static ena_interface_touch_callback touch_callbacks[TOUCH_PAD_MAX];
void ena_interface_register_touch_callback(int touch_pad, ena_interface_touch_callback callback) void ena_interface_register_touch_callback(int touch_pad, ena_interface_touch_callback callback)
@ -21,18 +34,24 @@ void ena_interface_register_touch_callback(int touch_pad, ena_interface_touch_ca
void ena_interface_run(void *pvParameter) void ena_interface_run(void *pvParameter)
{ {
uint16_t touch_value; uint16_t touch_value;
uint16_t touch_thresh;
bool touch_status_current[4] = {0}; bool touch_status_current[4] = {0};
while (1) while (1)
{ {
for (int i = 0; i < TOUCH_PAD_MAX; i++) for (int i = 0; i < TOUCH_PAD_COUNT; i++)
{ {
int touch_id = touch_mapping[i];
ESP_ERROR_CHECK_WITHOUT_ABORT(touch_pad_read_filtered(touch_id, &touch_value));
ESP_ERROR_CHECK_WITHOUT_ABORT(touch_pad_get_thresh(touch_id, &touch_thresh));
touch_status_current[i] = touch_value < touch_thresh;
touch_pad_read_filtered(i, &touch_value); if (!touch_status[i] & touch_status_current[i])
touch_status_current[i] = touch_value < TOUCHPAD_TOUCH_THRESHOLD;
if (!touch_status[i] & touch_status_current[i] && touch_callbacks[i] != NULL)
{ {
(*touch_callbacks[i])(); ESP_LOGD(ENA_INTERFACE_LOG, "touch %u at %d (thresh %u)", touch_value, touch_id, touch_thresh);
if (touch_callbacks[touch_id] != NULL)
{
(*touch_callbacks[touch_id])();
}
} }
touch_status[i] = touch_status_current[i]; touch_status[i] = touch_status_current[i];
} }
@ -46,11 +65,29 @@ void ena_interface_start(void)
ESP_ERROR_CHECK(touch_pad_init()); ESP_ERROR_CHECK(touch_pad_init());
ESP_ERROR_CHECK(touch_pad_set_voltage(TOUCH_HVOLT_2V7, TOUCH_LVOLT_0V5, TOUCH_HVOLT_ATTEN_1V)); ESP_ERROR_CHECK(touch_pad_set_voltage(TOUCH_HVOLT_2V7, TOUCH_LVOLT_0V5, TOUCH_HVOLT_ATTEN_1V));
ESP_ERROR_CHECK(touch_pad_set_trigger_mode(TOUCH_TRIGGER_BELOW)); ESP_ERROR_CHECK(touch_pad_set_trigger_mode(TOUCH_TRIGGER_BELOW));
touch_mapping[0] = TOUCH_PAD_ESC;
touch_mapping[1] = TOUCH_PAD_OK;
touch_mapping[2] = TOUCH_PAD_UP;
touch_mapping[3] = TOUCH_PAD_DOWN;
for (int i = 0; i < TOUCH_PAD_COUNT; i++)
{
int touch_id = touch_mapping[i];
ESP_ERROR_CHECK(touch_pad_config(touch_id, 0));
}
ESP_ERROR_CHECK(touch_pad_filter_start(TOUCHPAD_FILTER_TOUCH_PERIOD)); ESP_ERROR_CHECK(touch_pad_filter_start(TOUCHPAD_FILTER_TOUCH_PERIOD));
ESP_ERROR_CHECK(touch_pad_config(TOUCH_PAD_ESC, TOUCHPAD_TOUCH_THRESHOLD));
ESP_ERROR_CHECK(touch_pad_config(TOUCH_PAD_OK, TOUCHPAD_TOUCH_THRESHOLD)); uint16_t touch_value;
ESP_ERROR_CHECK(touch_pad_config(TOUCH_PAD_UP, TOUCHPAD_TOUCH_THRESHOLD)); for (int i = 0; i < TOUCH_PAD_COUNT; i++)
ESP_ERROR_CHECK(touch_pad_config(TOUCH_PAD_DOWN, TOUCHPAD_TOUCH_THRESHOLD)); {
int touch_id = touch_mapping[i];
ESP_ERROR_CHECK(touch_pad_read_filtered(touch_id, &touch_value));
ESP_ERROR_CHECK(touch_pad_set_thresh(touch_id, touch_value * 2 / 3));
ESP_LOGD(ENA_INTERFACE_LOG, "calibrate %u at %u (thresh %u)", touch_id, touch_value, (touch_value * 2 / 3));
}
xTaskCreate(&ena_interface_run, "ena_interface_run", configMINIMAL_STACK_SIZE * 4, NULL, 5, NULL); xTaskCreate(&ena_interface_run, "ena_interface_run", configMINIMAL_STACK_SIZE * 4, NULL, 5, NULL);
} }

67
main/ena-interface.h
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@ -1,8 +1,16 @@
/** // Copyright 2020 Lukas Haubaum
* Interface for different operations //
* // Licensed under the GNU Affero General Public License, Version 3;
*/ // you may not use this file except in compliance with the License.
#include "driver/touch_pad.h" // 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.
#ifndef _ena_INTERFACE_H_ #ifndef _ena_INTERFACE_H_
#define _ena_INTERFACE_H_ #define _ena_INTERFACE_H_
@ -10,34 +18,63 @@
#define ENA_INTERFACE_LOG "ESP-ENA-interface" // TAG for Logging #define ENA_INTERFACE_LOG "ESP-ENA-interface" // TAG for Logging
#define TOUCHPAD_FILTER_TOUCH_PERIOD (10) #define TOUCHPAD_FILTER_TOUCH_PERIOD (10)
#define TOUCHPAD_TOUCH_THRESHOLD (600)
#define TOUCH_PAD_COUNT (4)
#define TOUCH_PAD_ESC (TOUCH_PAD_NUM0) #define TOUCH_PAD_ESC (TOUCH_PAD_NUM0)
#define TOUCH_PAD_OK (TOUCH_PAD_NUM6) #define TOUCH_PAD_OK (TOUCH_PAD_NUM6)
#define TOUCH_PAD_UP (TOUCH_PAD_NUM4) #define TOUCH_PAD_UP (TOUCH_PAD_NUM4)
#define TOUCH_PAD_DOWN (TOUCH_PAD_NUM3) #define TOUCH_PAD_DOWN (TOUCH_PAD_NUM3)
/**
* @brief different interface states
*/
typedef enum typedef enum
{ {
ENA_INTERFACE_STATE_IDLE = 0, ENA_INTERFACE_STATE_IDLE = 0, // ilde state, do nothing
ENA_INTERFACE_STATE_MENU, ENA_INTERFACE_STATE_MENU, // main menu
ENA_INTERFACE_STATE_SET_YEAR, ENA_INTERFACE_STATE_SET_YEAR, // set current year
ENA_INTERFACE_STATE_SET_MONTH, ENA_INTERFACE_STATE_SET_MONTH, // set current month
ENA_INTERFACE_STATE_SET_DAY, ENA_INTERFACE_STATE_SET_DAY, // set current day
ENA_INTERFACE_STATE_SET_HOUR, ENA_INTERFACE_STATE_SET_HOUR, // set current hour
ENA_INTERFACE_STATE_SET_MINUTE, ENA_INTERFACE_STATE_SET_MINUTE, // set current minute
ENA_INTERFACE_STATE_SET_SECONDS, ENA_INTERFACE_STATE_SET_SECONDS, // set current second
ENA_INTERFACE_STATE_STATUS, ENA_INTERFACE_STATE_STATUS, // view current status
} ena_interface_state; } ena_interface_state;
/**
* @brief callback function on touch event
*/
typedef void (*ena_interface_touch_callback)(void); typedef void (*ena_interface_touch_callback)(void);
/**
* @brief register a callback function for touch event
*
* @param[in] touch_pad id of the touchpad to listen touch
* @param[in] callback callback function
*/
void ena_interface_register_touch_callback(int touch_pad, ena_interface_touch_callback callback); void ena_interface_register_touch_callback(int touch_pad, ena_interface_touch_callback callback);
/**
* @brief get current interface state
*
* @return
* current state the interface is in
*/
int ena_interface_get_state(void); int ena_interface_get_state(void);
/**
* @brief set current interface state
*
* @param[in] state new state to set
*/
void ena_interface_set_state(ena_interface_state state); void ena_interface_set_state(ena_interface_state state);
/**
* @brief start interface logic
*
* This will initialize the touch controls and start a task to listen to touch
* inputs and calling the callbacks
*/
void ena_interface_start(void); void ena_interface_start(void);
#endif #endif

195
main/ena-storage.c
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@ -1,3 +1,16 @@
// 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 <string.h> #include <string.h>
#include "freertos/FreeRTOS.h" #include "freertos/FreeRTOS.h"
#include "freertos/task.h" #include "freertos/task.h"
@ -11,10 +24,10 @@
#define BLOCK_SIZE (4096) #define BLOCK_SIZE (4096)
const int ENA_STORAGE_TEK_COUNT_ADDRESS = (0); // starting address for TEK COUNT const int ENA_STORAGE_TEK_COUNT_ADDRESS = (0); // starting address for TEK COUNT
const int ENA_STORAGE_TEK_START_ADDRESS = (ENA_STORAGE_TEK_COUNT_ADDRESS + sizeof(uint8_t)); const int ENA_STORAGE_TEK_START_ADDRESS = (ENA_STORAGE_TEK_COUNT_ADDRESS + sizeof(uint32_t));
const int ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS = (ENA_STORAGE_TEK_START_ADDRESS + sizeof(ena_tek_t) * ENA_STOARGE_TEK_STORE_PERIOD); // starting address for temporary detections COUNT (offset from max. stored TEKs) const int ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS = (ENA_STORAGE_TEK_START_ADDRESS + sizeof(ena_tek_t) * ENA_STORAGE_TEK_STORE_PERIOD);
const int ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS = (ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS + sizeof(uint32_t)); // starting address for temporary detections const int ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS = (ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS + sizeof(uint32_t));
const int ENA_STORAGE_DETECTIONS_COUNT_ADDRESS = (ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS + sizeof(ena_temp_detection_t) * ENA_STOARGE_TEMP_DETECTIONS_MAX); // starting address for detections COUNT (offset from max. stored temporary detections) const int ENA_STORAGE_DETECTIONS_COUNT_ADDRESS = (ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS + sizeof(ena_temp_detection_t) * ENA_STORAGE_TEMP_DETECTIONS_MAX);
const int ENA_STORAGE_DETECTIONS_START_ADDRESS = (ENA_STORAGE_DETECTIONS_COUNT_ADDRESS + sizeof(uint32_t)); const int ENA_STORAGE_DETECTIONS_START_ADDRESS = (ENA_STORAGE_DETECTIONS_COUNT_ADDRESS + sizeof(uint32_t));
void ena_storage_read(size_t address, void *data, size_t size) void ena_storage_read(size_t address, void *data, size_t size)
@ -63,15 +76,14 @@ void ena_storage_write(size_t address, void *data, size_t size)
else else
{ {
ESP_LOGD(ENA_STORAGE_LOG, "overflow block at address %u with size %d (block %d)", address, size, block_num); ESP_LOGD(ENA_STORAGE_LOG, "overflow block at address %u with size %d (block %d)", address, size, block_num);
const size_t block1_address = address;
const size_t block2_address = (block_num + 1) * BLOCK_SIZE; const size_t block2_address = (block_num + 1) * BLOCK_SIZE;
const size_t data2_size = address + size - block2_address; const size_t data2_size = address + size - block2_address;
const size_t data1_size = size - data2_size; const size_t data1_size = size - data2_size;
ESP_LOGD(ENA_STORAGE_LOG, "block1_address %d, block1_size %d (block %d)", block1_address, data1_size, block_num); 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); 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); void *data1 = malloc(data1_size);
memcpy(data1, data, data1_size); memcpy(data1, data, data1_size);
ena_storage_write(block1_address, data1, data1_size); ena_storage_write(address, data1, data1_size);
free(data1); free(data1);
void *data2 = malloc(data2_size); void *data2 = malloc(data2_size);
@ -88,7 +100,7 @@ void ena_storage_shift_delete(size_t address, size_t end_address, size_t size)
int block_num_start = address / BLOCK_SIZE; int block_num_start = address / BLOCK_SIZE;
// check for overflow // check for overflow
if (address + size < (block_num_start + 1) * BLOCK_SIZE) if (address + size <= (block_num_start + 1) * BLOCK_SIZE)
{ {
const esp_partition_t *partition = esp_partition_find_first( const esp_partition_t *partition = esp_partition_find_first(
ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_ANY, PARTITION_NAME); ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_ANY, PARTITION_NAME);
@ -116,12 +128,6 @@ void ena_storage_shift_delete(size_t address, size_t end_address, size_t size)
memcpy((buffer + BLOCK_SIZE - size), buffer_next_block, size); memcpy((buffer + BLOCK_SIZE - size), buffer_next_block, size);
free(buffer_next_block); free(buffer_next_block);
} }
else
{
// fill end with zeros
ESP_LOGD(ENA_STORAGE_LOG, "fill with zeros %u", size);
memset((buffer + BLOCK_SIZE - size), 0, size);
}
ESP_ERROR_CHECK(esp_partition_erase_range(partition, block_num_start * BLOCK_SIZE, BLOCK_SIZE)); 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)); ESP_ERROR_CHECK(esp_partition_write(partition, block_num_start * BLOCK_SIZE, buffer, BLOCK_SIZE));
@ -138,24 +144,23 @@ void ena_storage_shift_delete(size_t address, size_t end_address, size_t size)
const size_t block2_address = (block_num_start + 1) * BLOCK_SIZE; const size_t block2_address = (block_num_start + 1) * BLOCK_SIZE;
const size_t data2_size = address + size - block2_address; const size_t data2_size = address + size - block2_address;
const size_t data1_size = size - data2_size; const size_t data1_size = size - data2_size;
ena_storage_shift_delete(block1_address, end_address, data1_size); ena_storage_shift_delete(block1_address, block2_address, data1_size);
ena_storage_shift_delete(block2_address, end_address - data1_size, data2_size); ena_storage_shift_delete(block2_address, end_address - data1_size, data2_size);
} }
ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_shift_delete"); ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_shift_delete");
} }
uint8_t ena_storage_read_last_tek(ena_tek_t *tek) uint32_t ena_storage_read_last_tek(ena_tek_t *tek)
{ {
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_read_tek"); ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_read_tek");
uint8_t tek_count = 0; uint32_t tek_count = 0;
ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint8_t)); ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint32_t));
if (tek_count < 1) if (tek_count < 1)
{ {
return 0; return 0;
} }
size_t address = ENA_STORAGE_TEK_START_ADDRESS + (tek_count - 1) * sizeof(ena_tek_t); uint8_t index = (tek_count % ENA_STORAGE_TEK_STORE_PERIOD) - 1;
ena_storage_read(ENA_STORAGE_TEK_START_ADDRESS + index * sizeof(ena_tek_t), tek, sizeof(ena_tek_t));
ena_storage_read(address, tek, sizeof(ena_tek_t));
ESP_LOGD(ENA_STORAGE_LOG, "read last tek %u:", tek->enin); 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); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, tek->key_data, ENA_KEY_LENGTH, ESP_LOG_DEBUG);
@ -167,16 +172,13 @@ void ena_storage_write_tek(ena_tek_t *tek)
{ {
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_write_tek"); ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_write_tek");
uint8_t tek_count = 0; uint32_t tek_count = 0;
ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint8_t)); ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint32_t));
ena_storage_write(ENA_STORAGE_TEK_START_ADDRESS + tek_count * sizeof(ena_tek_t), tek, sizeof(ena_tek_t)); uint8_t index = (tek_count % ENA_STORAGE_TEK_STORE_PERIOD);
ena_storage_write(ENA_STORAGE_TEK_START_ADDRESS + index * sizeof(ena_tek_t), tek, sizeof(ena_tek_t));
tek_count++; tek_count++;
if (tek_count > ENA_STOARGE_TEK_STORE_PERIOD) ena_storage_write(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint32_t));
{
tek_count = 1;
}
ena_storage_write(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint8_t));
ESP_LOGD(ENA_STORAGE_LOG, "write tek: ENIN %u", tek->enin); 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); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, tek->key_data, ENA_KEY_LENGTH, ESP_LOG_DEBUG);
@ -194,46 +196,51 @@ uint32_t ena_storage_temp_detections_count(void)
return count; return count;
} }
void ena_storage_read_temp_detection(uint32_t index, ena_temp_detection_t *detection) void ena_storage_get_temp_detection(uint32_t index, ena_temp_detection_t *detection)
{ {
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_read_temp_detection"); ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_read_temp_detection");
ena_storage_read(ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS + index * sizeof(ena_temp_detection_t), detection, sizeof(ena_temp_detection_t)); ena_storage_read(ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS + index * sizeof(ena_temp_detection_t), detection, sizeof(ena_temp_detection_t));
ESP_LOGD(ENA_STORAGE_LOG, "read temp detection: first %u, last %u and rssi %d", detection->timestamp_first, detection->timestamp_last, detection->rssi); ESP_LOGD(ENA_STORAGE_LOG, "read temp detection: first %u, last %u and rssi %d", detection->timestamp_first, detection->timestamp_last, detection->rssi);
ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG);
ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->aem, ENA_AEM_METADATA_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->aem, ENA_AEM_METADATA_LENGTH, ESP_LOG_DEBUG);
ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_read_temp_detection"); ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_read_temp_detection");
} }
uint32_t ena_storage_write_temp_detection(ena_temp_detection_t *detection) uint32_t ena_storage_add_temp_detection(ena_temp_detection_t *detection)
{ {
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_write_temp_detection"); ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_add_temp_detection");
uint32_t count = ena_storage_temp_detections_count(); uint32_t count = ena_storage_temp_detections_count();
// overwrite older temporary detections?!
// start overwriting temporay detections?! uint8_t index = count % ENA_STORAGE_TEMP_DETECTIONS_MAX;
if (count > ENA_STOARGE_TEMP_DETECTIONS_MAX) ena_storage_set_temp_detection(index, detection);
{ ESP_LOGD(ENA_STORAGE_LOG, "add temp detection at %u: first %u, last %u and rssi %d", index, detection->timestamp_first, detection->timestamp_last, detection->rssi);
count = 0; ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG);
} ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->aem, ENA_AEM_METADATA_LENGTH, ESP_LOG_DEBUG);
ena_storage_write(ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS + count * sizeof(ena_temp_detection_t), detection, sizeof(ena_temp_detection_t));
count++; count++;
ena_storage_write(ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); ena_storage_write(ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS, &count, sizeof(uint32_t));
ESP_LOGD(ENA_STORAGE_LOG, "write temp detection: first %u, last %u and rssi %d", detection->timestamp_first, detection->timestamp_last, detection->rssi); ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_add_temp_detection");
return count - 1;
}
void ena_storage_set_temp_detection(uint32_t index, ena_temp_detection_t *detection)
{
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_set_temp_detection");
ena_storage_write(ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS + index * sizeof(ena_temp_detection_t), detection, sizeof(ena_temp_detection_t));
ESP_LOGD(ENA_STORAGE_LOG, "set temp detection at %u: first %u, last %u and rssi %d", index, detection->timestamp_first, detection->timestamp_last, detection->rssi);
ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG);
ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->aem, ENA_AEM_METADATA_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->aem, ENA_AEM_METADATA_LENGTH, ESP_LOG_DEBUG);
ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_write_temp_detection"); ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_set_temp_detection");
return count - 1;
} }
void ena_storage_remove_temp_detection(uint32_t index) void ena_storage_remove_temp_detection(uint32_t index)
{ {
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_remove_temp_detection"); ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_remove_temp_detection");
uint32_t count = ena_storage_temp_detections_count(); uint32_t count = ena_storage_temp_detections_count();
size_t address_from = ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS + index * sizeof(ena_detection_t); size_t address_from = ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS + index * sizeof(ena_temp_detection_t);
size_t address_to = ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS + count * sizeof(ena_detection_t); size_t address_to = ENA_STORAGE_TEMP_DETECTIONS_START_ADDRESS + count * sizeof(ena_temp_detection_t);
ena_storage_shift_delete(address_from, address_to, sizeof(ena_detection_t)); ena_storage_shift_delete(address_from, address_to, sizeof(ena_temp_detection_t));
count--; count--;
ena_storage_write(ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); ena_storage_write(ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS, &count, sizeof(uint32_t));
@ -251,7 +258,7 @@ uint32_t ena_storage_detections_count(void)
return count; return count;
} }
void ena_storage_read_detection(uint32_t index, ena_detection_t *detection) void ena_storage_get_detection(uint32_t index, ena_detection_t *detection)
{ {
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_read_detection"); ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_read_detection");
ena_storage_read(ENA_STORAGE_DETECTIONS_START_ADDRESS + index * sizeof(ena_detection_t), detection, sizeof(ena_detection_t)); ena_storage_read(ENA_STORAGE_DETECTIONS_START_ADDRESS + index * sizeof(ena_detection_t), detection, sizeof(ena_detection_t));
@ -261,7 +268,7 @@ void ena_storage_read_detection(uint32_t index, ena_detection_t *detection)
ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_read_detection"); ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_read_detection");
} }
void ena_storage_write_detection(ena_detection_t *detection) void ena_storage_add_detection(ena_detection_t *detection)
{ {
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_write_detection"); ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_write_detection");
ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG); ESP_LOG_BUFFER_HEXDUMP(ENA_STORAGE_LOG, detection->rpi, ENA_KEY_LENGTH, ESP_LOG_DEBUG);
@ -282,16 +289,73 @@ void ena_storage_erase(void)
ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_ANY, PARTITION_NAME); ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_ANY, PARTITION_NAME);
assert(partition); assert(partition);
ESP_ERROR_CHECK(esp_partition_erase_range(partition, 0, partition->size)); ESP_ERROR_CHECK(esp_partition_erase_range(partition, 0, partition->size));
ESP_LOGI(PARTITION_NAME, "erase partition!"); ESP_LOGI(ENA_STORAGE_LOG, "erased partition %s!", PARTITION_NAME);
uint32_t count = 0; uint32_t count = 0;
ena_storage_write(ENA_STORAGE_TEK_COUNT_ADDRESS, &count, sizeof(uint8_t)); ena_storage_write(ENA_STORAGE_TEK_COUNT_ADDRESS, &count, sizeof(uint32_t));
ena_storage_write(ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); ena_storage_write(ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS, &count, sizeof(uint32_t));
ena_storage_write(ENA_STORAGE_DETECTIONS_COUNT_ADDRESS, &count, sizeof(uint32_t)); ena_storage_write(ENA_STORAGE_DETECTIONS_COUNT_ADDRESS, &count, sizeof(uint32_t));
ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_erase"); ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_erase");
} }
void ena_storage_erase_tek(void)
{
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_erase_teks");
uint32_t tek_count = 0;
ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint32_t));
uint8_t stored = ENA_STORAGE_TEK_STORE_PERIOD;
if (tek_count < ENA_STORAGE_TEK_STORE_PERIOD)
{
stored = tek_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);
ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_erase_teks");
}
void ena_storage_erase_temporary_detection(void)
{
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_erase_temporary_detections");
uint32_t detection_count = 0;
ena_storage_read(ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS, &detection_count, sizeof(uint32_t));
uint32_t stored = ENA_STORAGE_TEMP_DETECTIONS_MAX;
if (detection_count < ENA_STORAGE_TEMP_DETECTIONS_MAX)
{
stored = detection_count;
}
size_t size = sizeof(uint32_t) + stored * sizeof(ena_temp_detection_t);
uint8_t *zeros = calloc(size, sizeof(uint8_t));
ena_storage_write(ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS, zeros, size);
free(zeros);
ESP_LOGI(ENA_STORAGE_LOG, "erased %d temporary detections (size %u at %u)", stored, size, ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS);
ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_erase_temporary_detections");
}
void ena_storage_erase_detection(void)
{
ESP_LOGD(ENA_STORAGE_LOG, "START ena_storage_erase_detection");
uint32_t detection_count = 0;
ena_storage_read(ENA_STORAGE_DETECTIONS_COUNT_ADDRESS, &detection_count, sizeof(uint32_t));
size_t size = sizeof(uint32_t) + detection_count * sizeof(ena_detection_t);
uint8_t *zeros = calloc(size, sizeof(uint8_t));
ena_storage_write(ENA_STORAGE_DETECTIONS_COUNT_ADDRESS, zeros, size);
free(zeros);
ESP_LOGI(ENA_STORAGE_LOG, "erased %d detections (size %u at %u)", detection_count, size, ENA_STORAGE_DETECTIONS_COUNT_ADDRESS);
ESP_LOGD(ENA_STORAGE_LOG, "END ena_storage_erase_detection");
}
void ena_storage_dump_hash_array(uint8_t *data, size_t size) void ena_storage_dump_hash_array(uint8_t *data, size_t size)
{ {
for (int i = 0; i < size; i++) for (int i = 0; i < size; i++)
@ -310,11 +374,18 @@ void ena_storage_dump_hash_array(uint8_t *data, size_t size)
void ena_storage_dump_tek(void) void ena_storage_dump_tek(void)
{ {
ena_tek_t tek; ena_tek_t tek;
uint8_t tek_count = 0; uint32_t tek_count = 0;
ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint8_t)); ena_storage_read(ENA_STORAGE_TEK_COUNT_ADDRESS, &tek_count, sizeof(uint32_t));
ESP_LOGD(ENA_STORAGE_LOG, "%u TEKs\n", tek_count); uint8_t stored = ENA_STORAGE_TEK_STORE_PERIOD;
if (tek_count < ENA_STORAGE_TEK_STORE_PERIOD)
{
stored = tek_count;
}
ESP_LOGD(ENA_STORAGE_LOG, "%u TEKs (%u stored)\n", tek_count, stored);
printf("#,enin,tek\n"); printf("#,enin,tek\n");
for (int i = 0; i < tek_count; i++) for (int i = 0; i < stored; i++)
{ {
size_t address = ENA_STORAGE_TEK_START_ADDRESS + i * sizeof(ena_tek_t); size_t address = ENA_STORAGE_TEK_START_ADDRESS + i * sizeof(ena_tek_t);
@ -330,11 +401,17 @@ void ena_storage_dump_temp_detections(void)
ena_temp_detection_t detection; ena_temp_detection_t detection;
uint32_t detection_count = 0; uint32_t detection_count = 0;
ena_storage_read(ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS, &detection_count, sizeof(uint32_t)); ena_storage_read(ENA_STORAGE_TEMP_DETECTIONS_COUNT_ADDRESS, &detection_count, sizeof(uint32_t));
ESP_LOGD(ENA_STORAGE_LOG, "%u temporary detections\n", detection_count); uint32_t stored = ENA_STORAGE_TEMP_DETECTIONS_MAX;
printf("#,timestamp_first,timestamp_last,rpi,aem,rssi\n");
for (int i = 0; i < detection_count; i++) if (detection_count < ENA_STORAGE_TEMP_DETECTIONS_MAX)
{ {
ena_storage_read_temp_detection(i, &detection); stored = detection_count;
}
ESP_LOGD(ENA_STORAGE_LOG, "%u temporary detections (%u stored)\n", detection_count, stored);
printf("#,timestamp_first,timestamp_last,rpi,aem,rssi\n");
for (int i = 0; i < stored; i++)
{
ena_storage_get_temp_detection(i, &detection);
printf("%d,%u,%u,", i, detection.timestamp_first, detection.timestamp_last); printf("%d,%u,%u,", i, detection.timestamp_first, detection.timestamp_last);
ena_storage_dump_hash_array(detection.rpi, ENA_KEY_LENGTH); ena_storage_dump_hash_array(detection.rpi, ENA_KEY_LENGTH);
printf(","); printf(",");
@ -353,7 +430,7 @@ void ena_storage_dump_detections(void)
printf("#,timestamp,rpi,aem,rssi\n"); printf("#,timestamp,rpi,aem,rssi\n");
for (int i = 0; i < detection_count; i++) for (int i = 0; i < detection_count; i++)
{ {
ena_storage_read_detection(i, &detection); ena_storage_get_detection(i, &detection);
printf("%d,%u,", i, detection.timestamp); printf("%d,%u,", i, detection.timestamp);
ena_storage_dump_hash_array(detection.rpi, ENA_KEY_LENGTH); ena_storage_dump_hash_array(detection.rpi, ENA_KEY_LENGTH);
printf(","); printf(",");

157
main/ena-storage.h
View File

@ -1,84 +1,189 @@
// 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.
#ifndef _ena_STORAGE_H_ #ifndef _ena_STORAGE_H_
#define _ena_STORAGE_H_ #define _ena_STORAGE_H_
#include "ena-crypto.h" #include "ena-crypto.h"
#include "ena-datastructures.h" #include "ena-datastructures.h"
#define ENA_STORAGE_LOG "ESP-ENA-storage" // TAG for Logging #define ENA_STORAGE_LOG "ESP-ENA-storage" // TAG for Logging
#define PARTITION_NAME "ena" #define PARTITION_NAME "ena" // name of partition to use for storing
#define ENA_STOARGE_TEK_STORE_PERIOD (14) // Period of storing TEKs // length of a stored detection -> RPI keysize + AEM size + 4 Bytes for ENIN + 4 Bytes for RSSI #define ENA_STORAGE_TEK_STORE_PERIOD (14) // Period of storing TEKs // length of a stored detection -> RPI keysize + AEM size + 4 Bytes for ENIN + 4 Bytes for RSSI
#define ENA_STOARGE_TEMP_DETECTIONS_MAX (1000) // Maximum number of temporary stored detections #define ENA_STORAGE_TEMP_DETECTIONS_MAX (1000) // Maximum number of temporary stored detections
/** /**
* read bytes at given address * @brief read bytes at given address
*
* @param[in] address the address to read bytes from
* @param[out] data pointer to write the read data
* @param[in] size how many bytes to read
*/ */
void ena_storage_read(size_t address, void *data, size_t size); void ena_storage_read(size_t address, void *data, size_t size);
/** /**
* store bytes at given address * @brief store bytes at given address
*
* @param[in] address the address to write bytes to
* @param[in] data pointer to the data to write
* @param[in] size how many bytes to write
*/ */
void ena_storage_write(size_t address, void *data, size_t size); void ena_storage_write(size_t address, void *data, size_t size);
/** /**
* deletes bytes at given address and shift other data back * @brief deletes bytes at given address and shift other data back
*
* @param[in] address the address to delete from
* @param[in] end_address the address to mark end of shift
* @param[in] size how many bytes to delete
*/ */
void ena_storage_shift_delete(size_t address, size_t end_address, size_t size); void ena_storage_shift_delete(size_t address, size_t end_address, size_t size);
/** /**
* get last stored TEK * @brief get last stored TEK
* *
* return cound * @param[out] tek pointer to write last TEK to
*
* @return
* total number of TEKs stored
*/ */
uint8_t ena_storage_read_last_tek(ena_tek_t *tek); uint32_t ena_storage_read_last_tek(ena_tek_t *tek);
/** /**
* store TEK * @brief store given TEK
*
* This will store the given TEK as new TEK.
*
* @param[in] tek the tek to store
*/ */
void ena_storage_write_tek(ena_tek_t *tek); void ena_storage_write_tek(ena_tek_t *tek);
/** /**
* get number of stored temporary detections * @brief get number of stored temporary detections
*
* @return
* total number of temporary detections stored
*/ */
uint32_t ena_storage_temp_detections_count(void); uint32_t ena_storage_temp_detections_count(void);
/** /**
* get temporary detection (RPI + AEM + RSSI with UNIX timestamp) at given index * @brief get temporary detection at given index
*/
void ena_storage_read_temp_detection(uint32_t index, ena_temp_detection_t *detection);
/**
* store temporary detection (RPI + AEM + RSSI with UNIX timestamp)
* *
* returns index * @param[in] index the index of the temporary detection to read
* @param[out] detection pointer to temporary to write to
*/ */
uint32_t ena_storage_write_temp_detection(ena_temp_detection_t *detection); void ena_storage_get_temp_detection(uint32_t index, ena_temp_detection_t *detection);
/** /**
* remove temporary detection at given index * @brief store temporary detection
*
* @param[in] detection new temporary detection to store
*
* @return
* index of new stored detection
*/
uint32_t ena_storage_add_temp_detection(ena_temp_detection_t *detection);
/**
* @brief store temporary detection at given index
*
* @param[in] index the index of the temporary detection to overwrite
* @param[in] detection temporary detection to store
*/
void ena_storage_set_temp_detection(uint32_t index, ena_temp_detection_t *detection);
/**
* @brief remove temporary detection at given index
*
* @param[in] index the index of the temporary detection to remove
*/ */
void ena_storage_remove_temp_detection(uint32_t index); void ena_storage_remove_temp_detection(uint32_t index);
/** /**
* get number of stored detections * @brief get number of stored detections
*
* @return
* total number of detections stored
*/ */
uint32_t ena_storage_detections_count(void); uint32_t ena_storage_detections_count(void);
/** /**
* get detection (RPI + AEM + RSSI with ENIN) at given index * @brief get detection at given index
*
* @param[in] index the index of the detection to read
* @param[out] detection pointer to to write to
*/ */
void ena_storage_read_detection(uint32_t index, ena_detection_t *detection); void ena_storage_get_detection(uint32_t index, ena_detection_t *detection);
/** /**
* store detection (RPI + AEM + RSSI with ENIN) * @brief store detection
*
* @param[in] detection new detection to store
*/ */
void ena_storage_write_detection(ena_detection_t *detection); void ena_storage_add_detection(ena_detection_t *detection);
/**
* @brief erase the storage
*
* This function completely deletes all stored data and resets the counters
* of TEKs, temporary detection and detection to zero.
*/
void ena_storage_erase(void); void ena_storage_erase(void);
/**
* @brief erase stored TEKs
*
* This function deletes all stored TEKs and resets counter to zero.
*/
void ena_storage_erase_tek(void);
/**
* @brief erase stored temporary detections
*
* This function deletes all stored temporary detections and resets counter to zero.
*/
void ena_storage_erase_temporary_detection(void);
/**
* @brief erase stored detections
*
* This function deletes all stored detections and resets counter to zero.
*/
void ena_storage_erase_detection(void);
/**
* @brief dump all stored TEKs to serial output
*
* This function prints all stored TEKs to serial output in
* the following CSV format: #,enin,tek
*/
void ena_storage_dump_tek(void); void ena_storage_dump_tek(void);
/**
* @brief dump all stored temporary detections to serial output
*
* This function prints all stored temporary detections to serial output in
* the following CSV format: #,timestamp_first,timestamp_last,rpi,aem,rssi
*/
void ena_storage_dump_temp_detections(void); void ena_storage_dump_temp_detections(void);
/**
* @brief dump all stored detections to serial output
*
* This function prints all stored detections to serial output in
* the following CSV format: #,timestamp,rpi,aem,rssi
*/
void ena_storage_dump_detections(void); void ena_storage_dump_detections(void);
#endif #endif

33
main/ena.c
View File

@ -1,4 +1,16 @@
// 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 <stdio.h> #include <stdio.h>
#include <time.h> #include <time.h>
@ -22,7 +34,19 @@
#include "ena.h" #include "ena.h"
static ena_tek_t last_tek; // last ENIN static ena_tek_t last_tek; // last ENIN
static uint32_t next_rpi_timestamp; // next rpi
void ena_next_rpi_timestamp(uint32_t timestamp)
{
int random_interval = esp_random() % (2 * ENA_RPI_ROLLING_RANDOM_INTERVAL);
if (random_interval > ENA_RPI_ROLLING_RANDOM_INTERVAL)
{
random_interval = ENA_RPI_ROLLING_RANDOM_INTERVAL - random_interval;
}
next_rpi_timestamp = timestamp + ENA_RPI_ROLLING_PERIOD + random_interval;
ESP_LOGD(ENA_LOG, "next rpi at %u (%u from %u)", next_rpi_timestamp, (ENA_RPI_ROLLING_PERIOD + random_interval), timestamp);
}
void ena_run(void *pvParameter) void ena_run(void *pvParameter)
{ {
@ -40,7 +64,7 @@ void ena_run(void *pvParameter)
} }
// change RPI // change RPI
if (unix_timestamp % ENA_TIME_WINDOW == 0) if (unix_timestamp >= next_rpi_timestamp)
{ {
if (ena_bluetooth_scan_get_status() == ENA_SCAN_STATUS_SCANNING) if (ena_bluetooth_scan_get_status() == ENA_SCAN_STATUS_SCANNING)
{ {
@ -53,6 +77,7 @@ void ena_run(void *pvParameter)
{ {
ena_bluetooth_scan_start(ENA_SCANNING_TIME); ena_bluetooth_scan_start(ENA_SCANNING_TIME);
} }
ena_next_rpi_timestamp(unix_timestamp);
} }
// scan // scan
@ -118,7 +143,9 @@ void ena_start(void)
uint32_t current_enin = ena_crypto_enin((uint32_t)time(NULL)); uint32_t current_enin = ena_crypto_enin((uint32_t)time(NULL));
uint8_t tek_count = ena_storage_read_last_tek(&last_tek); uint32_t tek_count = ena_storage_read_last_tek(&last_tek);
ena_next_rpi_timestamp((uint32_t)time(NULL));
// read last TEK or create new // read last TEK or create new
if (tek_count == 0 || (current_enin - last_tek.enin) >= ENA_TEK_ROLLING_PERIOD) if (tek_count == 0 || (current_enin - last_tek.enin) >= ENA_TEK_ROLLING_PERIOD)

27
main/ena.h
View File

@ -1,13 +1,32 @@
/** // Copyright 2020 Lukas Haubaum
* combine bluetooth and crypto parts to build EXPOSURE NOTIFICATION //
* // 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.
#ifndef _ena_H_ #ifndef _ena_H_
#define _ena_H_ #define _ena_H_
#define ENA_LOG "ESP-ENA" // TAG for Logging #define ENA_LOG "ESP-ENA" // TAG for Logging
#define ENA_RPI_ROLLING_PERIOD (900) // change RPI every 15 minutes
#define ENA_RPI_ROLLING_RANDOM_INTERVAL (150) // random intervall change of rpi +/- ~2.5 minutes
/**
* @brief Start Exposure Notification API
*
* This initializes the complete stack of ESP_ENA. It will initialize BLE module and
* starting a task for managing advertising and scanning processes.
*
*/
void ena_start(void); void ena_start(void);
#endif #endif

28
main/main.c
View File

@ -1,17 +1,18 @@
/** // Copyright 2020 Lukas Haubaum
* provide bluetooth part of Exposure Notification API v1.2 as defined by Apple/Google //
* // Licensed under the GNU Affero General Public License, Version 3;
* Source documents: // you may not use this file except in compliance with the License.
* // You may obtain a copy of the License at
* https://blog.google/documents/70/Exposure_Notification_-_Bluetooth_Specification_v1.2.2.pdf
*
* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-BluetoothSpecificationv1.2.pdf
*
*
*
*/
// 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 <stdio.h> #include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h" #include "freertos/FreeRTOS.h"
#include "freertos/task.h" #include "freertos/task.h"
#include <time.h> #include <time.h>
@ -20,6 +21,7 @@
#include "esp_log.h" #include "esp_log.h"
#include "ena.h" #include "ena.h"
#include "ena-detection.h"
#include "ena-storage.h" #include "ena-storage.h"
#include "ena-interface.h" #include "ena-interface.h"
#include "ena-interface-menu.h" #include "ena-interface-menu.h"
@ -33,7 +35,7 @@ void app_main(void)
settimeofday(&tv, NULL); settimeofday(&tv, NULL);
esp_log_level_set(ENA_STORAGE_LOG, ESP_LOG_INFO); esp_log_level_set(ENA_STORAGE_LOG, ESP_LOG_INFO);
// ena_storage_erase(); // only needed on first start! TODO automatically check // ena_storage_erase(); // only needed on first start! TODO automatically check (how?)
ena_interface_start(); ena_interface_start();
ena_interface_menu_start(); ena_interface_menu_start();