tests: check whether server returns the correct error code if presented with invalid versions

That is gnutls_handshake() will return GNUTLS_E_UNSUPPORTED_VERSION_PACKET in
server side, if the client presents a very old TLS version which is not supported.

Relates #42

1 files changed, 142 insertions, 0 deletions

diff --git a/tests/handshake-versions.c b/tests/handshake-versions.c
new file mode 100644
index 0000000000..b12fb58ce9
--- /dev/null
+++ b/tests/handshake-versions.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2015 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 <string.h>
+#include <errno.h>
+#include <gnutls/gnutls.h>
+#include "utils.h"
+#include "eagain-common.h"
+#include "cert-common.h"
+
+/* This tests whether the server reacts as expected on various client
+ * hello TLS versions */
+
+void _gnutls_hello_set_default_version(gnutls_session_t session,
+					unsigned char major,
+					unsigned char minor);
+
+const char *side;
+
+static void tls_log_func(int level, const char *str)
+{
+	fprintf(stderr, "%s|<%d>| %s", side, level, str);
+}
+
+static void try(unsigned char major, unsigned char minor, int ret1, int ret2)
+{
+	int ret;
+	/* Server stuff. */
+	gnutls_certificate_credentials_t serverx509cred;
+	gnutls_session_t server;
+	int sret = GNUTLS_E_AGAIN;
+	/* Client stuff. */
+	gnutls_certificate_credentials_t clientx509cred;
+	gnutls_session_t client;
+	int cret = GNUTLS_E_AGAIN;
+
+	/* General init. */
+	gnutls_global_set_log_function(tls_log_func);
+	if (debug)
+		gnutls_global_set_log_level(6);
+
+	/* Init server */
+	gnutls_certificate_allocate_credentials(&serverx509cred);
+	gnutls_certificate_set_x509_key_mem(serverx509cred,
+					    &server_cert, &server_key,
+					    GNUTLS_X509_FMT_PEM);
+
+	gnutls_init(&server, GNUTLS_SERVER);
+	gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,
+			       serverx509cred);
+
+	gnutls_priority_set_direct(server,
+				   "NORMAL",
+				   NULL);
+	gnutls_transport_set_push_function(server, server_push);
+	gnutls_transport_set_pull_function(server, server_pull);
+	gnutls_transport_set_ptr(server, server);
+
+	/* Init client */
+
+	ret = gnutls_certificate_allocate_credentials(&clientx509cred);
+	if (ret < 0)
+		exit(1);
+
+	ret = gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca_cert, GNUTLS_X509_FMT_PEM);
+	if (ret < 0)
+		exit(1);
+
+	ret = gnutls_init(&client, GNUTLS_CLIENT);
+	if (ret < 0)
+		exit(1);
+
+	ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
+			       clientx509cred);
+	if (ret < 0)
+		exit(1);
+
+	ret = gnutls_priority_set_direct(client, "NORMAL", NULL);
+	if (ret < 0)
+		exit(1);
+
+	gnutls_transport_set_push_function(client, client_push);
+	gnutls_transport_set_pull_function(client, client_pull);
+	gnutls_transport_set_ptr(client, client);
+	_gnutls_hello_set_default_version(client, major, minor);
+
+	HANDSHAKE_EXPECT(client, server, ret1, ret2);
+
+	gnutls_bye(client, GNUTLS_SHUT_RDWR);
+	gnutls_bye(server, GNUTLS_SHUT_RDWR);
+
+	gnutls_deinit(client);
+	gnutls_deinit(server);
+
+	gnutls_certificate_free_credentials(serverx509cred);
+	gnutls_certificate_free_credentials(clientx509cred);
+}
+
+void doit(void)
+{
+	global_init();
+
+	try(1,1, GNUTLS_E_AGAIN, GNUTLS_E_UNSUPPORTED_VERSION_PACKET);
+	reset_buffers();
+	try(2,1, GNUTLS_E_AGAIN, GNUTLS_E_UNSUPPORTED_VERSION_PACKET);
+	reset_buffers();
+	/* check SSL 3.0 which is disabled by default */
+	try(3,0, GNUTLS_E_AGAIN, GNUTLS_E_UNSUPPORTED_VERSION_PACKET);
+	reset_buffers();
+	try(3,2, 0, 0);
+	reset_buffers();
+	try(3,23, 0, 0);
+	reset_buffers();
+	try(4,0, 0, 0);
+	reset_buffers();
+	gnutls_global_deinit();
+}