KTLS: rekey test

Signed-off-by: Frantisek Krenzelok <krenzelok.frantisek@gmail.com>

3 files changed, 429 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1122886b31..2d345d478e 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -500,6 +500,8 @@ endif
 if ENABLE_KTLS
 indirect_tests += gnutls_ktls
 dist_check_SCRIPTS += ktls.sh
+indirect_tests += ktls_keyupdate
+dist_check_SCRIPTS += ktls_keyupdate.sh
 endif
 
 if !WINDOWS
diff --git a/tests/ktls_keyupdate.c b/tests/ktls_keyupdate.c
new file mode 100644
index 0000000000..9fbff38ae0
--- /dev/null
+++ b/tests/ktls_keyupdate.c
@@ -0,0 +1,381 @@
+// Copyright (C) 2022 Red Hat, Inc.
+//
+// Author: Frantisek Krenzelok
+//
+// 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 <sys/types.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+#include <gnutls/dtls.h>
+#include <gnutls/socket.h>
+#include <signal.h>
+#include <assert.h>
+#include <errno.h>
+
+#include "cert-common.h"
+#include "utils.h"
+
+#if defined(_WIN32)
+
+int main(void)
+{
+	exit(77);
+}
+
+#else
+
+
+#define MAX_BUF 1024
+#define MSG "Hello world!"
+
+#define HANDSHAKE(session, name, ret)\
+{\
+	do {\
+		ret = gnutls_handshake(session);\
+	}\
+	while (ret < 0 && gnutls_error_is_fatal(ret) == 0);\
+	if (ret < 0) {\
+		fail("%s: Handshake failed\n", name);\
+		goto end;\
+	}\
+}
+
+#define SEND_MSG(session, name, ret)\
+{\
+	do {\
+		ret = gnutls_record_send(session, MSG, strlen(MSG)+1);\
+	} while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);\
+	if (ret < 0) {\
+		fail("%s: data sending has failed (%s)\n",name,\
+		     gnutls_strerror(ret));\
+		goto end;\
+	}\
+}
+
+#define RECV_MSG(session, name, buffer, buffer_len, ret)\
+{\
+	memset(buffer, 0, sizeof(buffer));\
+	do{\
+		ret = gnutls_record_recv(session, buffer, sizeof(buffer));\
+	}\
+	while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);\
+	if (ret == 0) {\
+		success("%s: Peer has closed the TLS connection\n", name);\
+		goto end;\
+	} else if (ret < 0) {\
+		fail("%s: Error -> %s\n", name, gnutls_strerror(ret));\
+		goto end;\
+	}\
+	if(strncmp(buffer, MSG, ret)){\
+		fail("%s: Message doesn't match\n", name);\
+		goto end;\
+	}\
+}
+
+#define KEY_UPDATE(session, name, peer_req, ret)\
+{\
+	do {\
+		ret = gnutls_session_key_update(session, peer_req);\
+	} while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);\
+	if (ret < 0) {\
+		fail("%s: key update has failed (%s)\n", name, \
+		     gnutls_strerror(ret));\
+			 goto end;\
+	}\
+}
+
+#define CHECK_KTLS_ENABLED(session, ret)\
+{\
+	ret = gnutls_transport_is_ktls_enabled(session);\
+	if (!(ret & GNUTLS_KTLS_RECV)){\
+		fail("client: KTLS was not properly initialized\n");\
+		goto end;\
+	}\
+}
+
+static void server_log_func(int level, const char *str)
+{
+	fprintf(stderr, "server|<%d>| %s", level, str);
+}
+
+static void client_log_func(int level, const char *str)
+{
+	fprintf(stderr, "client|<%d>| %s", level, str);
+}
+
+
+static void client(int fd, const char *prio, int pipe)
+{
+	const char *name = "client";
+	int ret;
+	char foo;
+	char buffer[MAX_BUF + 1];
+	gnutls_certificate_credentials_t x509_cred;
+	gnutls_session_t session;
+
+	global_init();
+
+	if (debug) {
+		gnutls_global_set_log_function(client_log_func);
+		gnutls_global_set_log_level(7);
+	}
+
+	gnutls_certificate_allocate_credentials(&x509_cred);
+
+	gnutls_init(&session, GNUTLS_CLIENT);
+	gnutls_handshake_set_timeout(session, 0);
+
+	assert(gnutls_priority_set_direct(session, prio, NULL) >= 0);
+
+	gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
+
+	gnutls_transport_set_int(session, fd);
+
+	HANDSHAKE(session, name, ret);
+
+	CHECK_KTLS_ENABLED(session, ret)
+
+	// Test 0: Try sending/receiving data
+	RECV_MSG(session, name, buffer, MAX_BUF+1, ret)
+	SEND_MSG(session, name, ret)
+
+	CHECK_KTLS_ENABLED(session, ret)
+
+	// Test 1: Servers does key update
+	read(pipe, &foo, 1);
+	RECV_MSG(session, name, buffer, MAX_BUF+1, ret)
+	SEND_MSG(session, name, ret)
+
+	CHECK_KTLS_ENABLED(session, ret)
+
+	// Test 2: Does key update witch request
+	read(pipe, &foo, 1);
+	RECV_MSG(session, name, buffer, MAX_BUF+1, ret)
+	SEND_MSG(session, name, ret)
+	
+	CHECK_KTLS_ENABLED(session, ret)
+	
+	ret = gnutls_bye(session, GNUTLS_SHUT_RDWR);
+	if (ret < 0) {
+		fail("client: error in closing session: %s\n", gnutls_strerror(ret));
+	}
+
+	ret = 0;
+ end:
+
+	close(fd);
+
+	gnutls_deinit(session);
+
+	gnutls_certificate_free_credentials(x509_cred);
+
+	gnutls_global_deinit();
+
+	if (ret != 0)
+		exit(1);
+}
+
+pid_t child;
+static void terminate(void)
+{
+	assert(child);
+	kill(child, SIGTERM);
+	exit(1);
+}
+
+static void server(int fd, const char *prio, int pipe)
+{
+	const char *name = "server";
+	int ret;
+	char bar = 0;
+	char buffer[MAX_BUF + 1];
+	gnutls_certificate_credentials_t x509_cred;
+	gnutls_session_t session;
+
+	global_init();
+
+	if (debug) {
+		gnutls_global_set_log_function(server_log_func);
+		gnutls_global_set_log_level(7);
+	}
+
+	gnutls_certificate_allocate_credentials(&x509_cred);
+	ret = gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert,
+					    &server_key,
+					    GNUTLS_X509_FMT_PEM);
+	if (ret < 0)
+		exit(1);
+
+	gnutls_init(&session, GNUTLS_SERVER);
+	gnutls_handshake_set_timeout(session, 0);
+
+	assert(gnutls_priority_set_direct(session, prio, NULL)>=0);
+
+	gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
+
+	gnutls_transport_set_int(session, fd);
+
+	HANDSHAKE(session, name, ret)
+
+	CHECK_KTLS_ENABLED(session, ret)
+
+	success("Test 0: sending/receiving data\n");
+	SEND_MSG(session, name, ret)
+	RECV_MSG(session, name, buffer, MAX_BUF+1, ret)
+
+	CHECK_KTLS_ENABLED(session, ret)
+
+	success("Test 1: server key update without request\n");
+	KEY_UPDATE(session, name, 0, ret)
+	write(pipe, &bar, 1);
+	SEND_MSG(session, name, ret)
+	RECV_MSG(session, name, buffer, MAX_BUF+1, ret)
+
+	CHECK_KTLS_ENABLED(session, ret)
+
+	success("Test 2: server key update with request\n");
+	KEY_UPDATE(session, name, GNUTLS_KU_PEER, ret)
+	write(pipe, &bar, 1);
+	SEND_MSG(session, name, ret)
+	RECV_MSG(session, name, buffer, MAX_BUF+1, ret)
+
+	CHECK_KTLS_ENABLED(session, ret)
+
+	ret = gnutls_bye(session, GNUTLS_SHUT_RDWR);
+	if (ret < 0) {
+		fail("server: error in closing session: %s\n", gnutls_strerror(ret));
+	}
+
+	ret = 0;
+end:
+	close(fd);
+	gnutls_deinit(session);
+
+	gnutls_certificate_free_credentials(x509_cred);
+
+	gnutls_global_deinit();
+
+	if (ret){
+		terminate();
+	}
+
+	if (debug)
+		success("server: finished\n");
+}
+
+static void ch_handler(int sig)
+{
+	return;
+}
+
+static void run(const char *prio)
+{
+	int ret;
+	struct sockaddr_in saddr;
+	socklen_t addrlen;
+	int listener;
+	int fd;
+
+	int sync_pipe[2]; //used for synchronization
+	pipe(sync_pipe);
+
+	success("running ktls test with %s\n", prio);
+
+	signal(SIGCHLD, ch_handler);
+	signal(SIGPIPE, SIG_IGN);
+
+	listener = socket(AF_INET, SOCK_STREAM, 0);
+	if (listener == -1){
+		fail("error in listener(): %s\n", strerror(errno));
+	}
+
+	memset(&saddr, 0, sizeof(saddr));
+	saddr.sin_family = AF_INET;
+	saddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+	saddr.sin_port = 0;
+
+	ret = bind(listener, (struct sockaddr*)&saddr, sizeof(saddr));
+	if (ret == -1){
+		fail("error in bind(): %s\n", strerror(errno));
+	}
+
+	addrlen = sizeof(saddr);
+	ret = getsockname(listener, (struct sockaddr*)&saddr, &addrlen);
+	if (ret == -1){
+		fail("error in getsockname(): %s\n", strerror(errno));
+	}
+
+	child = fork();
+	if (child < 0) {
+		fail("error in fork(): %s\n", strerror(errno));
+		exit(1);
+	}
+
+	if (child) {
+		int status;
+		/* parent */
+		ret = listen(listener, 1);
+		if (ret == -1) {
+			fail("error in listen(): %s\n", strerror(errno));
+		}
+
+		fd = accept(listener, NULL, NULL);
+		if (fd == -1) {
+			fail("error in accept(): %s\n", strerror(errno));
+		}
+
+		close(sync_pipe[0]);
+		server(fd, prio, sync_pipe[1]);
+
+		wait(&status);
+		check_wait_status(status);
+	} else {
+		fd = socket(AF_INET, SOCK_STREAM, 0);
+		if (fd == -1){
+			fail("error in socket(): %s\n", strerror(errno));
+			exit(1);
+		}
+
+		usleep(1000000);
+		connect(fd, (struct sockaddr*)&saddr, addrlen);
+
+		close(sync_pipe[1]);
+		client(fd, prio, sync_pipe[0]);
+		exit(0);
+	}
+}
+
+void doit(void)
+{
+	run("NORMAL:-VERS-ALL:+VERS-TLS1.3:-CIPHER-ALL:+AES-128-GCM");
+	run("NORMAL:-VERS-ALL:+VERS-TLS1.3:-CIPHER-ALL:+AES-256-GCM");
+}
+
+#endif				/* _WIN32 */
diff --git a/tests/ktls_keyupdate.sh b/tests/ktls_keyupdate.sh
new file mode 100755
index 0000000000..d072acafc0
--- /dev/null
+++ b/tests/ktls_keyupdate.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+
+# Copyright (C) 2022 Red Hat, Inc.
+#
+# Author: Daiki Ueno
+#
+# 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.
+
+: ${builddir=.}
+
+. "$srcdir/scripts/common.sh"
+
+if ! grep '^tls ' /proc/modules 2>&1 /dev/null; then
+    exit 77
+fi
+
+testdir=`create_testdir ktls_keyupdate`
+
+cfg="$testdir/config"
+
+cat <<EOF > "$cfg"
+[global]
+ktls = true
+EOF
+
+GNUTLS_SYSTEM_PRIORITY_FAIL_ON_INVALID=1 \
+GNUTLS_SYSTEM_PRIORITY_FILE="$cfg" \
+"$builddir/ktls_keyupdate" "$@"
+rc=$?
+
+rm -rf "$testdir"
+exit $rc