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improve parameter check for 'a' command

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This commit is contained in:
Harald Barth 2022-07-06 21:12:10 +02:00
parent ca3ed95624
commit a7ea96b392
1 changed files with 6 additions and 5 deletions
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11
DCCEXParser.cpp
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@ -308,16 +308,17 @@ void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
address=p[0];
subaddress=p[1];
activep=2;
if ((p[3] < 0) || (p[3] > 1)) // invalid onoff 0|1
break;
onoff=p[3];
}
else break; // invalid no of parameters
if (
((address & 0x01FF) != address) // invalid address (limit 9 bits )
|| ((subaddress & 0x03) != subaddress) // invalid subaddress (limit 2 bits )
|| ((p[activep] & 0x01) != p[activep]) // invalid activate 0|1
|| (onoff > 2) // invalid onoff 0|1|2
) break;
((address & 0x01FF) != address) // invalid address (limit 9 bits)
|| ((subaddress & 0x03) != subaddress) // invalid subaddress (limit 2 bits)
|| (p[activep] > 1) || (p[activep] < 0) // invalid activate 0|1
) break;
// Honour the configuration option (config.h) which allows the <a> command to be reversed
#ifdef DCC_ACCESSORY_COMMAND_REVERSE
DCC::setAccessory(address, subaddress,p[activep]==0,onoff);