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This commit is contained in:
iceman1001 2022-08-22 05:49:47 +02:00
parent 6eaff873ba
commit c27264e4c4
15 changed files with 68 additions and 51 deletions
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21
client/src/wiegand_formatutils.c
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@ -141,8 +141,25 @@ static uint8_t get_length_from_header(wiegand_message_t *data) {
hfmt = data->Top & 0x000FFFFF;
len = 64;
} else if (data->Mid > 0) { // < 63-32 bits
hfmt = data->Mid;
len = 32;
// detect HID format b38 set
if (data->Mid & 0xFFFFFFC0) {
hfmt = data->Mid;
len = 32;
} else {
printf("hid preamble detected\n");
len = 32;
if ((data->Mid ^ 0x20) == 0) { hfmt = data->Bot; len = 0; }
else if ((data->Mid & 0x10) == 0) { hfmt = data->Mid & 0x1F; }
else if ((data->Mid & 0x08) == 0) { hfmt = data->Mid & 0x0F; }
else if ((data->Mid & 0x04) == 0) { hfmt = data->Mid & 0x07; }
else if ((data->Mid & 0x02) == 0) { hfmt = data->Mid & 0x03; }
else if ((data->Mid & 0x01) == 0) { hfmt = data->Mid & 0x01; }
else { hfmt = data->Mid & 0x3F;}
}
} else {
hfmt = data->Bot;
len = 0;