obs-studio/UI/obf.c

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#include "obf.h"
#include <stdbool.h>
#define LOWER_HALFBYTE(x) ((x)&0xF)
#define UPPER_HALFBYTE(x) (((x) >> 4) & 0xF)
void deobfuscate_str(char *str, uint64_t val)
{
uint8_t *dec_val = (uint8_t *)&val;
int i = 0;
while (*str != 0) {
int pos = i / 2;
bool bottom = (i % 2) == 0;
uint8_t *ch = (uint8_t *)str;
uint8_t xor = bottom ? LOWER_HALFBYTE(dec_val[pos])
: UPPER_HALFBYTE(dec_val[pos]);
*ch ^= xor;
if (++i == sizeof(uint64_t) * 2)
i = 0;
str++;
}
}