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only in case of valid key do action. Issue#10585 and block very slow incoming signals

This commit is contained in:
sle 2021-01-17 11:39:21 +01:00
parent f52f26f566
commit ba12d8911e
1 changed files with 71 additions and 64 deletions
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135
tasmota/xsns_82_wiegand.ino
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@ -274,65 +274,72 @@ bool Wiegand::WiegandConversion ()
{ {
bool bRet = false; bool bRet = false;
unsigned long nowTick = millis(); unsigned long nowTick = millis();
if ((nowTick - lastFoundTime) > WIEGAND_BIT_TIMEOUT) //last bit found is WIEGAND_BIT_TIMEOUT ms ago //add a maximum wait time for new bits
{ unsigned long diffTicks = nowTick - lastFoundTime;
#if (DEV_WIEGAND_TEST_MODE)>0 if ((diffTicks > WIEGAND_BIT_TIMEOUT) && (diffTicks >= 5000 )) { //max. 5 secs between 2 bits comming in
AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: raw tag: %llu "), rfidBuffer); bitCount=0;
AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: bit count: %u "), bitCount); rfidBuffer=0;
#endif lastFoundTime=nowTick;
if ((bitCount==4)||(bitCount==8)||(bitCount==24)||(bitCount==26)||(bitCount==32)||(bitCount==34)) { return bRet;
if ((bitCount==24)||(bitCount==26)||(bitCount==32)||(bitCount==34)) { }
// 24,26,32,34-bit Wiegand codes if (diffTicks > WIEGAND_BIT_TIMEOUT) { //last bit found is WIEGAND_BIT_TIMEOUT ms ago
rfid = CheckAndConvertRfid( rfidBuffer, bitCount); #if (DEV_WIEGAND_TEST_MODE)>0
tagSize=bitCount; AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: raw tag: %llu "), rfidBuffer);
bitCount=0; AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: bit count: %u "), bitCount);
rfidBuffer=0; #endif
bRet=true; if ((bitCount==4)||(bitCount==8)||(bitCount==24)||(bitCount==26)||(bitCount==32)||(bitCount==34)) {
} if ((bitCount==24)||(bitCount==26)||(bitCount==32)||(bitCount==34)) {
if (bitCount==4) { // 24,26,32,34-bit Wiegand codes
// 4-bit Wiegand codes for keypads rfid = CheckAndConvertRfid( rfidBuffer, bitCount);
rfid = (int)translateEnterEscapeKeyPress(rfidBuffer & 0x0000000F); tagSize=bitCount;
tagSize = bitCount; bitCount=0;
bitCount = 0; rfidBuffer=0;
rfidBuffer = 0; bRet=true;
bRet=true; }
} if (bitCount==4) {
if (bitCount==8){ // 4-bit Wiegand codes for keypads
// 8-bit Wiegand codes for keypads with integrity rfid = (int)translateEnterEscapeKeyPress(rfidBuffer & 0x0000000F);
// 8-bit Wiegand keyboard data, high nibble is the "NOT" of low nibble tagSize = bitCount;
// eg if key 1 pressed, data=E1 in binary 11100001 , high nibble=1110 , low nibble = 0001 bitCount = 0;
char highNibble = (rfidBuffer & 0xf0) >>4; rfidBuffer = 0;
char lowNibble = (rfidBuffer & 0x0f); bRet=true;
if (lowNibble == (~highNibble & 0x0f)) // check if low nibble matches the "NOT" of high nibble. }
{ if (bitCount==8){
rfid = (int)translateEnterEscapeKeyPress(lowNibble); // 8-bit Wiegand codes for keypads with integrity
bRet=true; // 8-bit Wiegand keyboard data, high nibble is the "NOT" of low nibble
} // eg if key 1 pressed, data=E1 in binary 11100001 , high nibble=1110 , low nibble = 0001
else { char highNibble = (rfidBuffer & 0xf0) >>4;
lastFoundTime=nowTick; char lowNibble = (rfidBuffer & 0x0f);
bRet=false; if (lowNibble == (~highNibble & 0x0f)) // check if low nibble matches the "NOT" of high nibble.
} {
tagSize=bitCount; rfid = (int)translateEnterEscapeKeyPress(lowNibble);
bitCount=0; bRet=true;
rfidBuffer=0; }
} else {
} lastFoundTime=nowTick;
else { bRet=false;
// time reached but unknown bitCount, clear and start again }
lastFoundTime=nowTick; tagSize=bitCount;
bitCount=0; bitCount=0;
rfidBuffer=0; rfidBuffer=0;
bRet=false;
} }
} }
else{ else {
bRet=false; // watching time not finished // time reached but unknown bitCount, clear and start again
lastFoundTime=nowTick;
bitCount=0;
rfidBuffer=0;
bRet=false;
} }
#if (DEV_WIEGAND_TEST_MODE)>0 }
AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: tag out: %llu "), rfid); else{
AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: tag size: %u"), tagSize); bRet=false; // watching time not finished
#endif }
return bRet; #if (DEV_WIEGAND_TEST_MODE)>0
AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: tag out: %llu "), rfid);
AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: tag size: %u"), tagSize);
#endif
return bRet;
} }
void Wiegand::ScanForTag() { void Wiegand::ScanForTag() {
@ -363,19 +370,19 @@ void Wiegand::ScanForTag() {
#endif #endif
if (bitCount > 0) { if (bitCount > 0) {
uint64_t oldTag = rfid; uint64_t oldTag = rfid;
bool newKey = WiegandConversion(); bool validKey = WiegandConversion();
#if (DEV_WIEGAND_TEST_MODE)>0 #if (DEV_WIEGAND_TEST_MODE)>0
AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: previous tag: %llu"), oldTag); AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: previous tag: %llu"), oldTag);
#endif #endif
if(newKey && (oldTag != rfid)) { // only in case of valid key do action. Issue#10585
AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: new= %llu"), rfid); if(validKey) {
} if (oldTag != rfid) { AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: new= %llu"), rfid); }
else else { AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: prev= %llu"), rfid); }
{ AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: prev= %llu"), rfid);} AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: bits= %u"), tagSize);
AddLog_P(LOG_LEVEL_INFO, PSTR("WIE: bits= %u"), tagSize); ResponseTime_P(PSTR(",\"Wiegand\":{\"UID\":\"%0llu\"}}"), rfid);
ResponseTime_P(PSTR(",\"Wiegand\":{\"UID\":\"%0llu\"}}"), rfid); MqttPublishTeleSensor();
MqttPublishTeleSensor(); }
} }
} }
#ifdef USE_WEBSERVER #ifdef USE_WEBSERVER