tests: check whether the max-record extension is usable with DTLS

1 files changed, 146 insertions, 0 deletions

diff --git a/tests/dtls-max-record.c b/tests/dtls-max-record.c
new file mode 100644
index 0000000000..10664cf7c9
--- /dev/null
+++ b/tests/dtls-max-record.c
@@ -0,0 +1,146 @@
+/*
+ * 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 <gnutls/dtls.h>
+#include "utils.h"
+
+#define SERVER_PUSH_ADD if (len > 512 + 5+8+32) fail("max record set to 512, len: %d\n", (int)len);
+#include "eagain-common.h"
+
+#include "cert-common.h"
+
+/* This tests whether the max-record extension is respected.
+ */
+
+const char *side;
+
+static void tls_log_func(int level, const char *str)
+{
+	fprintf(stderr, "%s|<%d>| %s", side, level, str);
+}
+
+void doit(void)
+{
+	global_init();
+
+	int ret;
+	char buf[1024];
+	/* 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,
+					    &server2_cert, &server2_key,
+					    GNUTLS_X509_FMT_PEM);
+
+	gnutls_init(&server, GNUTLS_SERVER|GNUTLS_DATAGRAM | GNUTLS_NONBLOCK);
+	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_pull_timeout_function(server,
+						   server_pull_timeout_func);
+	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, &ca2_cert, GNUTLS_X509_FMT_PEM);
+	if (ret < 0)
+		exit(1);
+
+	ret = gnutls_init(&client, GNUTLS_CLIENT|GNUTLS_DATAGRAM | GNUTLS_NONBLOCK);
+	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_record_set_max_size(client, 512);
+	gnutls_transport_set_push_function(client, client_push);
+	gnutls_transport_set_pull_function(client, client_pull);
+	gnutls_transport_set_pull_timeout_function(client,
+						   client_pull_timeout_func);
+	gnutls_transport_set_ptr(client, client);
+
+	HANDSHAKE_DTLS(client, server);
+
+	memset(buf, 1, sizeof(buf));
+	ret = gnutls_record_send(server, buf, 513);
+	if (ret != GNUTLS_E_LARGE_PACKET && ret < 0) {
+		gnutls_perror(ret);
+		exit(1);
+	}
+	success("did not send a 513-byte packet\n");
+
+	ret = gnutls_record_send(server, buf, 512);
+	if (ret < 0) {
+		gnutls_perror(ret);
+		exit(1);
+	}
+	success("did send a 512-byte packet\n");
+
+	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);
+
+	gnutls_global_deinit();
+}