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/* Copyright (c) 2001-2004, Roger Dingledine.
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2017, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#include "orconfig.h"
#define CRYPTO_PRIVATE
#include "crypto.h"
#include "test.h"
#include <openssl/evp.h>
#include <openssl/rand.h>
#include "compat_openssl.h"
/* Test for rectifying openssl RAND engine. */
static void
test_crypto_rng_engine(void *arg)
{
(void)arg;
RAND_METHOD dummy_method;
memset(&dummy_method, 0, sizeof(dummy_method));
/* We should be a no-op if we're already on RAND_OpenSSL */
tt_int_op(0, ==, crypto_force_rand_ssleay());
tt_assert(RAND_get_rand_method() == RAND_OpenSSL());
/* We should correct the method if it's a dummy. */
RAND_set_rand_method(&dummy_method);
#ifdef LIBRESSL_VERSION_NUMBER
/* On libressl, you can't override the RNG. */
tt_assert(RAND_get_rand_method() == RAND_OpenSSL());
tt_int_op(0, ==, crypto_force_rand_ssleay());
#else
tt_assert(RAND_get_rand_method() == &dummy_method);
tt_int_op(1, ==, crypto_force_rand_ssleay());
#endif
tt_assert(RAND_get_rand_method() == RAND_OpenSSL());
/* Make sure we aren't calling dummy_method */
crypto_rand((void *) &dummy_method, sizeof(dummy_method));
crypto_rand((void *) &dummy_method, sizeof(dummy_method));
done:
;
}
struct testcase_t crypto_openssl_tests[] = {
{ "rng_engine", test_crypto_rng_engine, TT_FORK, NULL, NULL },
END_OF_TESTCASES
};
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