tests: added test to ensure that gnutls_rnd() is not called during initializationtmp-init-random-generator-on-first-call

2 files changed, 70 insertions, 1 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 45bb8979af..499e8211b7 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -116,7 +116,8 @@ ctests = mini-record-2 simple gc set_pkcs12_cred certder certuniqueid	\
 	 client_dsa_key server_ecdsa_key tls-session-ext-register tls-session-supplemental \
 	 multi-alerts naked-alerts pkcs7-cat-parse set_known_dh_params_x509 \
 	 set_known_dh_params_anon set_known_dh_params_psk session-tickets-ok \
-	 session-tickets-missing set_x509_key_file_legacy status-request-ext
+	 session-tickets-missing set_x509_key_file_legacy status-request-ext \
+	 rng-no-onload
 
 if HAVE_SECCOMP_TESTS
 ctests += dtls-with-seccomp tls-with-seccomp dtls-client-with-seccomp tls-client-with-seccomp
diff --git a/tests/rng-no-onload.c b/tests/rng-no-onload.c
new file mode 100644
index 0000000000..726b5fddf4
--- /dev/null
+++ b/tests/rng-no-onload.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2016 Red Hat, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * GnuTLS is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuTLS is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GnuTLS; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+#include "utils.h"
+
+#if defined(ENABLE_FIPS140) || !defined(__linux__) || !defined(__GNUC__)
+
+void doit(void)
+{
+	exit(77);
+}
+
+#else
+
+static int _rnd_called = 0;
+
+/* Tests whether gnutls_rnd() is called during gnutls library initialization.
+ * Normally it shouldn't be called to prevent any blocking due to getrandom()
+ * calls.
+ */
+int __attribute__ ((visibility ("protected")))
+gnutls_rnd(gnutls_rnd_level_t level, void *data, size_t len)
+{
+	_rnd_called = 1;
+
+	memset(data, 0xff, len);
+	return 0;
+}
+
+void doit(void)
+{
+	global_init();
+
+	if (_rnd_called != 0)
+		fail("gnutls_rnd was called during gnutls_global_init()!\n");
+
+	gnutls_global_deinit();
+}
+#endif				/* _WIN32 */