Merge pull request #628 from AugustQu/CWA

CWA

include/corona.h

@@ -0,0 +1,16 @@
+#ifndef _CORONA_h
+#define _CORONA_H
+
+// inspired by https://github.com/kmetz/BLEExposureNotificationBeeper
+// (c) by Kaspar Metz
+// modified for use in the Paxcounter by AQ
+
+#include "globals.h"
+#include <map>
+
+bool cwa_init(void);
+bool cwa_mac_add(uint8_t *);
+void cwa_clear(void);
+uint16_t cwa_report(void);
+
+#endif

include/macsniff.h

@@ -12,10 +12,11 @@
 
 #define MAC_SNIFF_WIFI 0
 #define MAC_SNIFF_BLE 1
+#define MAC_SNIFF_BLE_CWA 2
 
 uint16_t get_salt(void);
 uint64_t macConvert(uint8_t *paddr);
 bool mac_add(uint8_t *paddr, int8_t rssi, bool sniff_type);
 void printKey(const char *name, const uint8_t *key, uint8_t len, bool lsb);
 
-#endif
+#endif

include/main.h

@@ -20,5 +20,6 @@
 #include "sensor.h"
 #include "lorawan.h"
 #include "timekeeper.h"
+#include "corona.h"
 
-#endif
+#endif

include/sdcard.h

@@ -5,7 +5,7 @@
 #include <stdio.h>
 #include <SPI.h>
 
-#ifdef HAS_SDCARD
+#if (HAS_SDCARD)
 #if HAS_SDCARD == 1
 #include <mySD.h>
 //#include <SD.h>
@@ -15,6 +15,11 @@
 #error HAS_SDCARD unknown card reader value, must be either 1 or 2
 #endif
 #endif
+// Pins for SD-card
+#define SDCARD_CS    (13)
+#define SDCARD_MOSI  (15)
+#define SDCARD_MISO  (2)
+#define SDCARD_SCLK  (14)
 
 #ifdef HAS_SDS011
 #include "sds011read.h"
@@ -38,9 +43,13 @@
 
 #define SDCARD_FILE_NAME "/paxcount.%02d"
 #define SDCARD_FILE_HEADER "date, time, wifi, bluet"
-
-bool sdcard_init(void);
-void sdcardWriteData(uint16_t, uint16_t);
-static void createFile(void);
-
+#define SDCARD_FILE_NAME       "paxcount.%02d"
+#define SDCARD_FILE_HEADER     "date, time, wifi, bluet"
+#if (COUNT_CWA)
+#define SDCARD_FILE_HEADER_CWA ",cwa"
 #endif
+
+bool sdcard_init( void );
+void sdcardWriteData( uint16_t, uint16_t, uint16_t = 0);
+
+#endif   // _SDCARD_H

include/senddata.h

@@ -8,6 +8,7 @@
 #include "lorawan.h"
 #include "display.h"
 #include "sdcard.h"
+#include "corona.h"
 
 extern Ticker sendcycler;
 

src/blecsan.cpp

@@ -6,6 +6,9 @@
 #define BT_BD_ADDR_HEX(addr)                                                   \
   addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]
 
+// checking for CWAs we need this magic bytes:
+static const char cwaMagicBytes[] = "\x03\x03\x6F\xfd";
+
 // local Tag for logging
 static const char TAG[] = "bluetooth";
 
@@ -158,10 +161,19 @@ IRAM_ATTR void gap_callback_handler(esp_gap_ble_cb_event_t event,
       // add this device and show new count total if it was not previously added
       mac_add((uint8_t *)p->scan_rst.bda, p->scan_rst.rssi, MAC_SNIFF_BLE);
 
+#if (COUNT_CWA)
+     // we can call the cwa-functions now
+     // because we use the hashed max-value
+     // done in mac_add()
+
+    // check for CWA-signature
+    if ( 0 == strncmp( (const char*)p->scan_rst.ble_adv, cwaMagicBytes , 4) ) {
+        cwa_mac_add( p->scan_rst.bda);
+   }
+#endif
+
+
       /* to be improved in vendorfilter if:
-      
-
-
       // you can search for elements in the payload using the
       // function esp_ble_resolve_adv_data()
       //

src/coona.cpp

@@ -0,0 +1,85 @@
+// routines for counting the number of available Corona Warn Apps (CWA)
+
+// copied from https://github.com/kmetz/BLEExposureNotificationBeeper
+// (c) by Kaspar Metz
+// modified for use in the Paxcounter by AQ
+
+#if (COUNT_CWA)
+
+// Local logging tag
+static const char TAG[] = __FILE__;
+
+#define BT_BD_ADDR_HEX(addr)                                                   \
+  addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]
+
+#include "corona.h"
+
+// taken from macsniff.cpp
+extern uint16_t salt;    
+extern uint16_t hashedmac;
+
+// When to forget old senders.
+#define FORGET_AFTER_MINUTES 2
+
+static std::map<uint16_t, unsigned long> cwaSeenNotifiers;
+
+
+/**
+ * Remove notifiers last seen over FORGET_AFTER_MINUTES ago.
+ */
+void cwa_clear() {
+  ESP_LOGD(TAG, "CWA: forget old notifier: %d", cwaSeenNotifiers.size());
+
+//#ifdef SOME_FORM_OF_DEBUG
+  for (auto const &notifier : cwaSeenNotifiers) {
+      ESP_LOGI(TAG, "CWA forget <%X>", notifier.first);
+//    }
+  }
+//#endif
+    /* clear everything,
+     * otherwise we will count the same device again
+     * as in the next cycle it will get a differetn hash-value
+     */
+    cwaSeenNotifiers.clear();  
+}
+
+/* return the numbers of active CWAs found
+ */
+uint16_t cwa_report(void) {
+  return cwaSeenNotifiers.size();
+}
+
+bool cwa_init(void)
+{
+  ESP_LOGD(TAG, "init of BLE-scanner for CWA");
+  return true;
+
+}
+
+// similar to mac_add(), found in macsniff.cpp
+// for comments pls. look into this function
+bool cwa_mac_add(uint8_t* paddr) {
+  
+  // are we too early?
+  if ( hashedmac <= 0 )
+      return false;   // YES -> return
+
+  bool added = false;
+  ESP_LOGD(TAG, "Device address (bda): %02x:%02x:%02x:%02x:%02x:%02x",
+               BT_BD_ADDR_HEX(paddr));
+  
+  ESP_LOGD(TAG, "hasehd mac = %X, count = %d (total=%d)", hashedmac, cwaSeenNotifiers.count(hashedmac), cwaSeenNotifiers.size());
+    added = !(cwaSeenNotifiers.count(hashedmac) > 0);
+
+    // Count only if MAC was not yet seen
+    if (added) {
+        ESP_LOGD(TAG, "added device with active CWA");
+   }
+
+   cwaSeenNotifiers[hashedmac] = millis(); // last seen at ....
+
+  // True if MAC WiFi/BLE was new
+  return added; 
+}
+
+#endif 

src/display.cpp

@@ -265,7 +265,12 @@ void dp_drawPage(time_t t, bool nextpage) {
     else
       dp_printf("WIFI:off");
     if (cfg.blescan)
-      dp_printf(" BLTH:%-5d", macs_ble);
+#if !(COUNT_CWA)
+      dp_printf("BLTH:%-5d", macs_ble);
+#else
+      dp_printf("BLTH:%-5d", macs_ble);
+      dp_printf("(CWA:%d)", cwa_report());
+#endif
     else
       dp_printf(" BLTH:off");
 #elif ((WIFICOUNTER) && (!BLECOUNTER))
@@ -274,9 +279,12 @@ void dp_drawPage(time_t t, bool nextpage) {
     else
       dp_printf("WIFI:off");
 #elif ((!WIFICOUNTER) && (BLECOUNTER))
-    if (cfg.blescan)
+    if (cfg.blescan) {
       dp_printf("BLTH:%-5d", macs_ble);
-    else
+#if (COUNT_CWA)
+      dp_printf("(CWA:%d)", cwa_report());
+#endif      
+  } else
       dp_printf("BLTH:off");
 #else
     dp_printf("Sniffer disabled");
@@ -736,4 +744,4 @@ void dp_plotCurve(uint16_t count, bool reset) {
   dp_drawPixel(plotbuf, col, row, 1);
 }
 
-#endif // HAS_DISPLAY
+#endif // HAS_DISPLAY

src/hal/ttgov21new.h

@@ -12,11 +12,11 @@
 // This settings are for boards labeled v1.6 on pcb, NOT for v1.5 or older
 */
 
-#define HAS_LORA 1       // comment out if device shall not send data via LoRa
+#define HAS_LORA         1 // comment out if device shall not send data via LoRa
 #define CFG_sx1276_radio 1 // HPD13A LoRa SoC
 
 // enable only if you want to store a local paxcount table on the device
-#define HAS_SDCARD  2      // this board has an SD-card-reader/writer
+#define HAS_SDCARD  1      // this board has an SD-card-reader/writer
 
 #define HAS_DISPLAY 1
 #define HAS_LED (25) // green on board LED

src/macsniff.cpp

@@ -10,7 +10,9 @@
 // Local logging tag
 static const char TAG[] = __FILE__;
 
-uint16_t salt;
+// used here and in corona.cpp
+uint16_t salt = -1;
+uint16_t hashedmac = -1; // temporary buffer for generated hash value
 
 uint16_t get_salt(void) {
   salt = (uint16_t)random(65536); // get new 16bit random for salting hashes
@@ -51,7 +53,6 @@ bool mac_add(uint8_t *paddr, int8_t rssi, bool sniff_type) {
   char buff[10]; // temporary buffer for printf
   bool added = false;
   int8_t beaconID;    // beacon number in test monitor mode
-  uint16_t hashedmac; // temporary buffer for generated hash value
   uint32_t *mac;      // temporary buffer for shortened MAC
 
   // only last 3 MAC Address bytes are used for MAC address anonymization
@@ -111,18 +112,25 @@ bool mac_add(uint8_t *paddr, int8_t rssi, bool sniff_type) {
           payload.addAlarm(rssi, beaconID);
           SendPayload(BEACONPORT, prio_high);
         }
-      };
+      }; 
 
     } // added
 
     // Log scan result
     ESP_LOGV(TAG,
              "%s %s RSSI %ddBi -> salted MAC %s -> Hash %04X -> WiFi:%d  "
-             "BLTH:%d -> "
-             "%d Bytes left",
+             "BLTH:%d "
+#if (COUNT_CWA)
+            "(CWA:%d)"
+#endif                     
+             "-> %d Bytes left",
              added ? "new  " : "known",
              sniff_type == MAC_SNIFF_WIFI ? "WiFi" : "BLTH", rssi, buff,
-             hashedmac, macs_wifi, macs_ble, getFreeRAM());
+             hashedmac, macs_wifi, macs_ble, 
+#if (COUNT_CWA)
+             cwa_report(),
+#endif
+             getFreeRAM());
 
 #if (VENDORFILTER)
   } else {

src/main.cpp

@@ -312,9 +312,25 @@ void setup() {
 
 // initialize sensors
 #if (HAS_SENSORS)
-  strcat_P(features, " SENS");
+#if (HAS_SENSOR_1)
+#if (COUNT_CWA)
+  ESP_LOGI(TAG, "init CWA-counter");
+  if ( cwa_init() )
+      strcat_P(features, " CWA");
+#else        
+  strcat_P(features, " SENS(1)");
   sensor_init();
 #endif
+#endif
+#if (HAS_SENSOR_2)
+  strcat_P(features, " SENS(2)");
+  sensor_init();
+#endif
+#if (HAS_SENSOR_3)
+  strcat_P(features, " SENS(3)");
+  sensor_init();
+#endif
+#endif
 
 // initialize LoRa
 #if (HAS_LORA)
@@ -336,7 +352,7 @@ void setup() {
   assert(mqtt_init() == ESP_OK);
 #endif
 
-#ifdef HAS_SDCARD
+#if (HAS_SDCARD)
   if (sdcard_init())
     strcat_P(features, " SD");
 #endif

src/paxcounter.conf

@@ -24,6 +24,15 @@
 #define BLESCANWINDOW                   80      // [milliseconds] scan window, see below, 3 .. 10240, default 80ms
 #define BLESCANINTERVAL                 80      // [illiseconds] scan interval, see below, 3 .. 10240, default 80ms = 100% duty cycle
 
+#define COUNT_CWA                       0       // count found copies of the Corona Warn App (CWA)
+                                                // set to 0 if you do not want to count these apps
+
+// for additional sensors (added by some user)
+#define HAS_SENSOR_1                    0       // set to 1 if you want to count CWAs
+#define HAS_SENSOR_2                    0       // not used 
+#define HAS_SENSOR_3                    0       // not used
+#define HAS_SENSORS     (HAS_SENSOR_1 || HAS_SENSOR_2 || HAS_SENSOR_3)   // to simplify things
+
 /* Note: guide for setting bluetooth parameters
 *
 * |< Scan Window >       |< Scan Window >       | ... |< Scan Window >       |

src/sdcard.cpp

@@ -9,6 +9,8 @@ static const char TAG[] = __FILE__;
 
 static bool useSDCard;
 
+static void createFile(void);
+
 File fileSDCard;
 
 bool sdcard_init() {
@@ -19,9 +21,7 @@ bool sdcard_init() {
   // https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/sdmmc_host.html
 
 #if HAS_SDCARD == 1 // use SD SPI host driver
-
   useSDCard = SD.begin(SDCARD_CS, SDCARD_MOSI, SDCARD_MISO, SDCARD_SCLK);
-
   //SPI.begin(SDCARD_SCLK, SDCARD_MSO, SDCARD_MOSI, SDCARD_CS);
   //delay(10);
   //useSDCard = SD.begin(SDCARD_CS, SPI, 40000000, "/sd");
@@ -38,7 +38,7 @@ bool sdcard_init() {
   return useSDCard;
 }
 
-void sdcardWriteData(uint16_t noWifi, uint16_t noBle) {
+void sdcardWriteData(uint16_t noWifi, uint16_t noBle, __attribute__((unused)) uint16_t noBleCWA) {
   static int counterWrites = 0;
   char tempBuffer[12 + 1];
   time_t t = now();
@@ -56,6 +56,10 @@ void sdcardWriteData(uint16_t noWifi, uint16_t noBle) {
   fileSDCard.print(tempBuffer);
   sprintf(tempBuffer, "%d,%d", noWifi, noBle);
   fileSDCard.print(tempBuffer);
+#if (COUNT_CWA)
+  sprintf(tempBuffer, ",%d", noBleCWA);
+  fileSDCard.print(tempBuffer);
+#endif
 #if (HAS_SDS011)
   sds011_store(&sds);
   sprintf(tempBuffer, ",%5.1f,%4.1f", sds.pm10, sds.pm25);
@@ -98,6 +102,9 @@ void createFile(void) {
       if (fileSDCard) {
         ESP_LOGD(TAG, "SD: name opened: <%s>", bufferFilename);
         fileSDCard.print(SDCARD_FILE_HEADER);
+#if (COUNT_CWA)
+        fileSDCard.print(SDCARD_FILE_HEADER_CWA);             // for Corona-data (CWA)
+#endif
 #if (HAS_SDS011)
         fileSDCard.print(SDCARD_FILE_HEADER_SDS011);
 #endif

src/senddata.cpp

@@ -55,8 +55,14 @@ void SendPayload(uint8_t port, sendprio_t prio) {
 #endif
 
 // write data to sdcard, if present
-#ifdef HAS_SDCARD
-  sdcardWriteData(macs_wifi, macs_ble);
+#if (HAS_SDCARD)
+  if ( port == COUNTERPORT ) {
+      sdcardWriteData(macs_wifi, macs_ble
+#if (COUNT_CWA)
+       , cwa_report()
+#endif              
+       );
+  }
 #endif
 
 } // SendPayload
@@ -143,22 +149,31 @@ void sendData() {
 #endif
 
 #if (HAS_SENSORS)
+#if (HAS_SENSOR_1)
     case SENSOR1_DATA:
       payload.reset();
       payload.addSensor(sensor_read(1));
       SendPayload(SENSOR1PORT, prio_normal);
+#if (COUNT_CWA)
+      cwa_clear();
+#endif
       break;
+#endif
+#if (HAS_SENSOR_2)
     case SENSOR2_DATA:
       payload.reset();
       payload.addSensor(sensor_read(2));
       SendPayload(SENSOR2PORT, prio_normal);
       break;
+#endif
+#if (HAS_SENSOR_3)
     case SENSOR3_DATA:
       payload.reset();
       payload.addSensor(sensor_read(3));
       SendPayload(SENSOR3PORT, prio_normal);
       break;
 #endif
+#endif
 
 #if (defined BAT_MEASURE_ADC || defined HAS_PMU)
     case BATT_DATA:

src/sensor.cpp

@@ -2,6 +2,14 @@
 #include "globals.h"
 #include "sensor.h"
 
+#if (COUNT_CWA)
+#include "payload.h"
+#include "corona.h"
+#include "macsniff.h"
+
+extern PayloadConvert payload;
+#endif
+
 // Local logging tag
 static const char TAG[] = __FILE__;
 
@@ -47,10 +55,14 @@ uint8_t *sensor_read(uint8_t sensor) {
   case 1:
 
     // insert user specific sensor data frames here */
+#if (COUNT_CWA)
+    payload.addCount( cwa_report(), MAC_SNIFF_BLE_CWA);
+#else
     buf[0] = length;
     buf[1] = 0x01;
     buf[2] = 0x02;
     buf[3] = 0x03;
+#endif
     break;
 
   case 2:
@@ -71,4 +83,4 @@ uint8_t *sensor_read(uint8_t sensor) {
   }
 
   return buf;
-}
+}