DigitalInfinity/ESP32-PaxCounter
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Merge branch 'hallard-master' into test

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This commit is contained in:
Klaus K Wilting 2018-04-04 20:07:08 +02:00
commit c4d2d7dde8
1 changed files with 7 additions and 8 deletions
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15
src/macsniff.cpp
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@ -31,8 +31,7 @@ uint16_t salt_reset(void) {
bool mac_add(uint8_t *paddr, int8_t rssi, bool sniff_type) {
char counter [6]; // uint16_t -> 2 byte -> 5 decimals + '0' terminator -> 6 chars
char macbuf [17]; // uint64_t -> 8 byte -> 16 hexadecimals + '0' terminator -> 17 chars
char buff[32]; // temporary buffer for printf
char typebuff[8];
bool added = false;
uint32_t addr2int;
@ -52,8 +51,8 @@ bool mac_add(uint8_t *paddr, int8_t rssi, bool sniff_type) {
// https://en.wikipedia.org/wiki/MAC_Address_Anonymization
addr2int += (uint32_t) salt << 16; // add 16-bit salt to 24-bit MAC
snprintf(macbuf, sizeof(macbuf), "%08X", addr2int); // convert unsigned 32-bit salted MAC to 8 digit hex string
hashedmac = rokkit(macbuf, 5); // hash MAC string, use 5 chars to fit hash in uint16_t container
snprintf(buff, sizeof(buff), "%08X", addr2int); // convert unsigned 32-bit salted MAC to 8 digit hex string
hashedmac = rokkit(buff, 5); // hash MAC string, use 5 chars to fit hash in uint16_t container
auto newmac = macs.insert(hashedmac); // add hashed MAC to total container if new unique
added = newmac.second ? true:false; // true if hashed MAC is unique in container
@ -70,11 +69,11 @@ bool mac_add(uint8_t *paddr, int8_t rssi, bool sniff_type) {
}
if (added) { // first time seen this WIFI or BLE MAC
snprintf(counter, sizeof(counter), "%d", (uint16_t) macs.size()); // convert 16-bit MAC counter to decimal counter value
u8x8.draw2x2String(0, 0, counter); // display number on unique macs total Wifi + BLE
ESP_LOGI(TAG, "%s RSSI %ddBi -> Hash %04X -> WiFi:%d BLE:%d Tot:%d",
snprintf(buff, sizeof(buff), "PAX:%d", (int) macs.size()); // convert 16-bit MAC counter to decimal counter value
u8x8.draw2x2String(0, 0, buff); // display number on unique macs total Wifi + BLE
ESP_LOGI(TAG, "%s RSSI %ddBi -> Hash %04X -> WiFi:%d BLE:%d %s",
typebuff, rssi, hashedmac,
(int) wifis.size(), (int) bles.size(), (int) macs.size());
(int) wifis.size(), (int) bles.size(), buff );
} else { // already seen WIFI or BLE MAC
ESP_LOGI(TAG, "%s RSSI %ddBi -> Hash %04X -> already seen", typebuff, rssi, hashedmac);
}