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data hex2bin - talk about brain melt

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iceman1001 2021-03-28 18:46:27 +02:00
commit 5e963a0746
1 changed files with 21 additions and 0 deletions
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21
client/src/cmddata.c
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@ -2421,9 +2421,30 @@ static int Cmdhex2bin(const char *Cmd) {
PrintAndLogEx(FAILED, "Error parsing bytes"); PrintAndLogEx(FAILED, "Error parsing bytes");
return PM3_EINVARG; return PM3_EINVARG;
} }
for (int i = 0; i < dlen; i++) {
char x = data[i];
if (isxdigit(x) == false) {
PrintAndLogEx(ERR, "Non hex digit found");
return PM3_EINVARG;
}
}
PrintAndLogEx(SUCCESS, "" NOLF); PrintAndLogEx(SUCCESS, "" NOLF);
for (int i = 0; i < dlen; i++) { for (int i = 0; i < dlen; i++) {
char x = data[i]; char x = data[i];
// capitalize
if (x >= 'a' && x <= 'f')
x -= 32;
// convert to numeric value
if (x >= '0' && x <= '9')
x -= '0';
else if (x >= 'A' && x <= 'F')
x -= 'A' - 10;
else
continue;
for (int j = 0 ; j < 4 ; ++j) { for (int j = 0 ; j < 4 ; ++j) {
PrintAndLogEx(NORMAL, "%d" NOLF, (x >> (3 - j)) & 1); PrintAndLogEx(NORMAL, "%d" NOLF, (x >> (3 - j)) & 1);
} }