JNIEXPORT jbyteArray JNICALL Java_org_netbeans_installer_utils_system_windows_WindowsRegistry_getBinaryValue0()

in src/main/cpp/jnilib/windows/src/jni_WindowsRegistry.c [540:582]

• 38 lines of code
• 8 McCabe index (conditional complexity)

JNIEXPORT jbyteArray JNICALL Java_org_netbeans_installer_utils_system_windows_WindowsRegistry_getBinaryValue0(JNIEnv *jEnv, jobject jObject, jint jMode, jint jSection, jstring jKey, jstring jName) {
    HKEY  hkey   = 0;
    unsigned short* key   = getWideChars(jEnv, jKey);
    unsigned short* value = getWideChars(jEnv, jName);
    
    jbyteArray result = NULL;
    if (RegOpenKeyExW(getHKEY(jSection), key, 0, KEY_QUERY_VALUE | getMode(jMode), &hkey) == ERROR_SUCCESS) {
        DWORD dwType  = 0;
        DWORD dwValue = 0;
        DWORD size    = 0;
        BYTE* data    = NULL;
        
        if (RegQueryValueExW(hkey, value, NULL, &dwType, NULL, &size) == ERROR_SUCCESS) {
            if (dwType == REG_BINARY || dwType == REG_NONE) {
                data = (BYTE*) LocalAlloc(LPTR, size + 8);
                if (RegQueryValueExW(hkey, value, NULL, &dwType, (BYTE*) data, &size) == ERROR_SUCCESS) {
                    if (data != NULL) {
                        result = (*jEnv)->NewByteArray(jEnv, (jsize) size);
                        (*jEnv)->SetByteArrayRegion(jEnv, result, 0, (jsize) size, (jbyte*) data);
                    }
                } else {
                    throwException(jEnv, "Could not read key data");
                }
                FREE(data);
            } else {
                throwException(jEnv, "Value is of wrong type");
            }
        } else {
            throwException(jEnv, "Could not read key data");
        }
    } else {
        throwException(jEnv, "Could not open key");
    }
    
    if (hkey != 0) {
        RegCloseKey(hkey);
    }
    
    FREE(key);
    FREE(value);
    
    return result;
}