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show code as in the duplicator and some comments

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This commit is contained in:
merlokk 2022-06-28 11:41:03 +03:00
commit 45804fb45c
1 changed files with 21 additions and 3 deletions
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24
client/src/cmdhftexkom.c
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@ -394,6 +394,13 @@ static bool TexcomGeneralDecode(uint32_t* implengths, uint32_t implengthslen, ch
return (!biterror && strlen(bitstring) > 0);
}
static void TexcomReverseCode(const uint8_t *code, int length, uint8_t *reverse_code) {
for (int i = 0; i < length; i++) {
reverse_code[i] = code[(length - 1) - i];
}
};
static int CmdHFTexkomReader(const char *Cmd) {
CLIParserContext *ctx;
CLIParserInit(&ctx, "hf texkom reader",
@ -473,7 +480,7 @@ static int CmdHFTexkomReader(const char *Cmd) {
//PrintAndLogEx(WARNING, "--- impulses: %d, lenarray: %d, [%d,%d]", impulsecnt, implengthslen, implengths[0], implengths[1]);
// check if it TK-17 modulation
// 65 impulses and 64 intervals
// 65 impulses and 64 intervals (1 interval = 2 bits, interval length encoding) that represents 128 bit of card code
if (impulsecnt == 65) {
if (TexcomTK17Decode(implengths, implengthslen, bitstring, cbitstring, verbose)) {
codefound = TexkomModTK17;
@ -481,6 +488,8 @@ static int CmdHFTexkomReader(const char *Cmd) {
}
}
// check if it TK-13 modulation
// it have 127 or 128 impulses and 128 double-intervals that represents 128 bit of card code
if (impulsecnt == 127 || impulsecnt == 128) {
if (TexcomTK13Decode(implengths, implengthslen, bitstring, cbitstring, verbose)) {
codefound = TexkomModTK13;
@ -488,6 +497,8 @@ static int CmdHFTexkomReader(const char *Cmd) {
}
}
// general decoding. it thought that there is 2 types of intervals "long" (1) and "short" (0)
// and tries to decode sequence. shows only raw data
if (verbose)
TexcomGeneralDecode(implengths, implengthslen, genbitstring, verbose);
}
@ -498,14 +509,21 @@ static int CmdHFTexkomReader(const char *Cmd) {
tcode[i / 8] = (tcode[i / 8] << 1) | ((cbitstring[i] == '1') ? 1 : 0);
}
if (verbose)
uint8_t rtcode[8] = {0};
TexcomReverseCode(tcode, 8, rtcode);
if (verbose) {
PrintAndLogEx(INFO, "Hex code: %s", sprint_hex(tcode, 8));
PrintAndLogEx(INFO, "Hex code reversed: %s", sprint_hex(rtcode, 8));
}
if (tcode[0] == 0xff && tcode[1] == 0xff) {
// decoding code
if (!verbose)
if (!verbose) {
PrintAndLogEx(INFO, "Texkom: %s", sprint_hex(tcode, 8));
PrintAndLogEx(INFO, "Texkom duplicator: %s", sprint_hex(rtcode, 8));
}
if (codefound == TexkomModTK13)
PrintAndLogEx(INFO, "modulation: TK13");