Function xmlInitRandom

ThirdParty/libxml2/vtklibxml2/dict.c:951–990

* xmlInitRandom: * * Initialize the PRNG. */

 * Initialize the PRNG.
 */
ATTRIBUTE_NO_SANITIZE_INTEGER
void
xmlInitRandom(void) {
    xmlInitMutex(&xmlRngMutex);

    {
#ifdef _WIN32
        NTSTATUS status;

        status = BCryptGenRandom(NULL, (unsigned char *) globalRngState,
                                 sizeof(globalRngState),
                                 BCRYPT_USE_SYSTEM_PREFERRED_RNG);
        if (!BCRYPT_SUCCESS(status)) {
            fprintf(stderr, "libxml2: BCryptGenRandom failed with "
                    "error code %lu\n", GetLastError());
            abort();
        }
#elif defined(HAVE_GETENTROPY)
        while (1) {
            if (getentropy(globalRngState, sizeof(globalRngState)) == 0)
                break;

            if (errno != EINTR) {
                fprintf(stderr, "libxml2: getentropy failed with "
                        "error code %d\n", errno);
                abort();
            }
        }
#else
        int var;

        globalRngState[0] =
                (unsigned) time(NULL) ^
                HASH_ROL((unsigned) ((size_t) &xmlInitRandom & 0xFFFFFFFF), 8);
        globalRngState[1] =
                HASH_ROL((unsigned) ((size_t) &xmlRngMutex & 0xFFFFFFFF), 16) ^
                HASH_ROL((unsigned) ((size_t) &var & 0xFFFFFFFF), 24);
#endif
    }
}

/*
 * xmlCleanupRandom: