Lurkars/esp-ena
1
0
Fork 0
mirror of https://github.com/Lurkars/esp-ena.git synced 2024-11-25 11:16:12 +01:00
Code Issues Projects Releases Wiki Activity

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

Browse Source
This commit is contained in:
Lurkars 2020-07-14 20:54:14 +02:00
parent 5b1c6e2c76
commit 1eedea1b9a
21 changed files with 793 additions and 259 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
.gitignore vendored
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
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 "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
View File

@ -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);

72
main/ena-datastructures.h
View File

@ -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_
@ -10,7 +18,12 @@
#include <stdio.h> #include <stdio.h>
#include "ena-crypto.h" #include "ena-crypto.h"
typedef enum /**
* @brief different risk levels
*
* not used for now
*/
typedef enum
{ {
RISK_LEVEL_INVALID = 0, RISK_LEVEL_INVALID = 0,
RISK_LEVEL_LOWEST, RISK_LEVEL_LOWEST,
@ -23,8 +36,12 @@ typedef enum
RISK_LEVEL_HIGHEST, RISK_LEVEL_HIGHEST,
} ena_risklevel_t; } ena_risklevel_t;
// maybe used later /**
typedef struct * @brief configuration for risk score calculation
*
* not used for now
*/
typedef struct
{ {
int minimum_risk_score; int minimum_risk_score;
int attenuation_score[8]; int attenuation_score[8];
@ -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;
typedef struct /**
* @brief structure for TEK
*/
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;
typedef struct /**
* @brief sturcture for a temporary detection
*/
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;
typedef struct /**
* @brief sturcture for a detection
*/
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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
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 "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
View File

@ -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
View File

@ -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();