tests: check whether large packets are allowed on the handshake

2 files changed, 286 insertions, 1 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 060956cbec..6744c7d907 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -112,7 +112,7 @@ ctests = mini-record-2 simple gc set_pkcs12_cred certder certuniqueid	\
 	 safe-renegotiation/srn0 safe-renegotiation/srn1 safe-renegotiation/srn2 \
 	 safe-renegotiation/srn3 safe-renegotiation/srn4 safe-renegotiation/srn5 \
 	 rsa-illegal-import set_x509_key_file_ocsp_multi set_key set_x509_key_file_ocsp_multi2 \
-	 set_key_utf8 set_x509_key_utf8 insecure_key
+	 set_key_utf8 set_x509_key_utf8 insecure_key handshake-large-packet
 
 if HAVE_SECCOMP_TESTS
 ctests += dtls-with-seccomp tls-with-seccomp dtls-client-with-seccomp tls-client-with-seccomp
diff --git a/tests/handshake-large-packet.c b/tests/handshake-large-packet.c
new file mode 100644
index 0000000000..47aca52fe1
--- /dev/null
+++ b/tests/handshake-large-packet.c
@@ -0,0 +1,285 @@
+/*
+ * 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>
+
+#if defined(_WIN32)
+
+/* socketpair isn't supported on Win32. */
+int main(int argc, char **argv)
+{
+	exit(77);
+}
+
+#else
+
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#if !defined(_WIN32)
+#include <sys/wait.h>
+#include <signal.h>
+#endif
+#include <unistd.h>
+#include <gnutls/gnutls.h>
+
+#include "utils.h"
+#include "cert-common.h"
+
+/* This test checks whether a large handshake packet is accepted by client
+ * and by server. (large is around 64kb)
+ */
+const char *side = "";
+
+static void tls_log_func(int level, const char *str)
+{
+	fprintf(stderr, "%s|<%d>| %s", side, level, str);
+}
+
+#define TLSEXT_TYPE1 0xFA
+#define TLSEXT_TYPE2 0xFB
+#define TLSEXT_TYPE3 0xFC
+#define TLSEXT_TYPE4 0xFD
+#define TLSEXT_TYPE5 0xFE
+
+static int TLSEXT_TYPE_server_sent  = 0;
+static int TLSEXT_TYPE_client_received = 0;
+
+#define MAX_SIZE (12*1024)
+
+static int ext_recv_client_params(gnutls_session_t session, const unsigned char *buf, size_t buflen)
+{
+	if (buflen != MAX_SIZE)
+		fail("ext_recv_client_params: Invalid input buffer length\n");
+
+	TLSEXT_TYPE_client_received++;
+
+	return 0; //Success
+}
+
+static int ext_send_client_params(gnutls_session_t session, gnutls_buffer_t extdata)
+{
+	unsigned char *data = gnutls_malloc(MAX_SIZE);
+	if (data == NULL)
+		return -1;
+
+	gnutls_buffer_append_data(extdata, data, MAX_SIZE);
+	gnutls_free(data);
+	return MAX_SIZE;
+}
+
+static int ext_recv_server_params(gnutls_session_t session, const unsigned char *buf, size_t buflen)
+{
+	return 0; //Success
+}
+
+static int ext_send_server_params(gnutls_session_t session, gnutls_buffer_t extdata)
+{
+	unsigned char *data = gnutls_malloc(MAX_SIZE);
+	if (data == NULL)
+		return -1;
+
+	TLSEXT_TYPE_server_sent++;
+	gnutls_buffer_append_data(extdata, data, MAX_SIZE);
+	gnutls_free(data);
+	return MAX_SIZE;
+}
+
+static void client(int sd)
+{
+	int ret;
+	gnutls_session_t session;
+	gnutls_certificate_credentials_t clientx509cred;
+
+	global_init();
+	gnutls_global_set_log_function(tls_log_func);
+	if (debug)
+		gnutls_global_set_log_level(4711);
+
+	side = "client";
+
+	gnutls_certificate_allocate_credentials(&clientx509cred);
+
+	/* Initialize TLS session
+	 */
+	gnutls_init(&session, GNUTLS_CLIENT);
+
+	/* Use default priorities */
+	gnutls_priority_set_direct(session, "PERFORMANCE:+ANON-ECDH:+ANON-DH",
+				   NULL);
+
+	/* put the anonymous credentials to the current session
+	 */
+	gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
+				clientx509cred);
+
+	gnutls_transport_set_int(session, sd);
+	gnutls_handshake_set_timeout(session, 20 * 1000);
+
+	gnutls_ext_register("ext_client1", TLSEXT_TYPE1, GNUTLS_EXT_TLS, ext_recv_client_params, ext_send_client_params, NULL, NULL, NULL);
+	gnutls_ext_register("ext_client2", TLSEXT_TYPE2, GNUTLS_EXT_TLS, ext_recv_client_params, ext_send_client_params, NULL, NULL, NULL);
+	gnutls_ext_register("ext_client3", TLSEXT_TYPE3, GNUTLS_EXT_TLS, ext_recv_client_params, ext_send_client_params, NULL, NULL, NULL);
+	gnutls_ext_register("ext_client4", TLSEXT_TYPE4, GNUTLS_EXT_TLS, ext_recv_client_params, ext_send_client_params, NULL, NULL, NULL);
+	gnutls_ext_register("ext_client5", TLSEXT_TYPE5, GNUTLS_EXT_TLS, ext_recv_client_params, ext_send_client_params, NULL, NULL, NULL);
+
+	/* Perform the TLS handshake
+	 */
+	do {
+		ret = gnutls_handshake(session);
+	} while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
+
+	if (ret < 0) {
+		fail("client: Handshake failed\n");
+		gnutls_perror(ret);
+		goto end;
+	} else {
+		if (debug)
+			success("client: Handshake was completed\n");
+	}
+
+	if (TLSEXT_TYPE_client_received != 5)
+		fail("client: extensions were not properly sent/received\n");
+
+	gnutls_bye(session, GNUTLS_SHUT_RDWR);
+
+end:
+	close(sd);
+
+	gnutls_deinit(session);
+
+	gnutls_certificate_free_credentials(clientx509cred);
+
+	gnutls_global_deinit();
+}
+
+static void server(int sd)
+{
+	gnutls_certificate_credentials_t serverx509cred;
+	int ret;
+	gnutls_session_t session;
+
+	/* this must be called once in the program
+	 */
+	global_init();
+	gnutls_global_set_log_function(tls_log_func);
+	if (debug)
+		gnutls_global_set_log_level(4711);
+
+	side = "server";
+
+	gnutls_certificate_allocate_credentials(&serverx509cred);
+	gnutls_certificate_set_x509_key_mem(serverx509cred,
+					    &server_cert, &server_key,
+					    GNUTLS_X509_FMT_PEM);
+
+	gnutls_init(&session, GNUTLS_SERVER);
+
+	/* avoid calling all the priority functions, since the defaults
+	 * are adequate.
+	 */
+	gnutls_priority_set_direct(session, "PERFORMANCE:+ANON-ECDH:+ANON-DH",
+				   NULL);
+
+	gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
+				serverx509cred);
+
+	gnutls_ext_register("ext_server1", TLSEXT_TYPE1, GNUTLS_EXT_TLS, ext_recv_server_params, ext_send_server_params, NULL, NULL, NULL);
+	gnutls_ext_register("ext_server2", TLSEXT_TYPE2, GNUTLS_EXT_TLS, ext_recv_server_params, ext_send_server_params, NULL, NULL, NULL);
+	gnutls_ext_register("ext_server3", TLSEXT_TYPE3, GNUTLS_EXT_TLS, ext_recv_server_params, ext_send_server_params, NULL, NULL, NULL);
+	gnutls_ext_register("ext_server4", TLSEXT_TYPE4, GNUTLS_EXT_TLS, ext_recv_server_params, ext_send_server_params, NULL, NULL, NULL);
+	gnutls_ext_register("ext_server5", TLSEXT_TYPE5, GNUTLS_EXT_TLS, ext_recv_server_params, ext_send_server_params, NULL, NULL, NULL);
+
+	gnutls_transport_set_int(session, sd);
+	gnutls_handshake_set_timeout(session, 20 * 1000);
+
+	do {
+		ret = gnutls_handshake(session);
+	} while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
+
+	if (ret < 0) {
+		close(sd);
+		gnutls_deinit(session);
+		fail("server: Handshake has failed (%s)\n\n",
+		     gnutls_strerror(ret));
+		return;
+	}
+	if (debug)
+		success("server: Handshake was completed\n");
+
+	if (TLSEXT_TYPE_server_sent != 5)
+		fail("server: extensions were not properly sent\n");
+
+	/* do not wait for the peer to close the connection.
+	 */
+	gnutls_bye(session, GNUTLS_SHUT_WR);
+
+	close(sd);
+	gnutls_deinit(session);
+
+	gnutls_certificate_free_credentials(serverx509cred);
+
+	gnutls_global_deinit();
+
+	if (debug)
+		success("server: finished\n");
+}
+
+void doit(void)
+{
+	pid_t child;
+	int sockets[2];
+	int err;
+
+	signal(SIGPIPE, SIG_IGN);
+
+	err = socketpair(AF_UNIX, SOCK_STREAM, 0, sockets);
+	if (err == -1) {
+		perror("socketpair");
+		fail("socketpair failed\n");
+		return;
+	}
+
+	child = fork();
+	if (child < 0) {
+		perror("fork");
+		fail("fork");
+		return;
+	}
+
+	if (child) {
+		int status;
+		/* parent */
+		close(sockets[0]);
+		client(sockets[1]);
+		wait(&status);
+	} else {
+		close(sockets[1]);
+		server(sockets[0]);
+	}
+}
+
+#endif				/* _WIN32 */