unsigned char* HelperFunc::getFileData(const char* pszFileName, const char* pszMode, unsigned long * pSize)
{
ssize_t size;
unsigned char* buf = FileUtils::getInstance()->getFileData(pszFileName, pszMode, &size);
if (NULL==buf || size<1) return NULL;
#ifdef LUASTACK_USED_FOR_QUICK_COCOS2DX
LuaStack* stack = LuaEngine::getInstance()->getLuaStack();
if (NULL==stack) {
return NULL;
}
int xxteaKeyLen = 0;
const char *xxteaKey = stack->getXXTEAKey(&xxteaKeyLen);
int xxteaSignLen = 0;
const char *xxteaSign = stack->getXXTEASign(&xxteaSignLen);
unsigned char* buffer = NULL;
if (xxteaKey && xxteaSign) {
bool isXXTEA = true;
for (int i = 0; isXXTEA && i<xxteaSignLen && i<size; ++i) {
isXXTEA = buf[i] == xxteaSign[i];
}
if (isXXTEA) { // decrypt XXTEA
xxtea_long len = 0;
buffer = xxtea_decrypt(
buf + xxteaSignLen,
(xxtea_long)size - (xxtea_long)xxteaSignLen,
(unsigned char*)xxteaKey,
(xxtea_long)xxteaKeyLen,
&len);
delete []buf;
buf = NULL;
size = len;
} else {
buffer = buf;
}
}
else {
buffer = buf;
}
if (pSize) *pSize = size;
return buffer;
#else
if (pSize) *pSize = size;
return buf;
#endif
}
