--- /dev/null
+/*
+ * 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)
+
+int main()
+{
+ exit(77);
+}
+
+#else
+
+#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/dtls.h>
+#include <assert.h>
+
+#include "cert-common.h"
+#include "utils.h"
+
+static void terminate(void);
+
+/* This program tests the rehandshake from anon
+ * to certification auth in DTLS.
+ */
+
+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);
+}
+
+/* Tests the operation of rehandshake under DTLS using
+ * certificates.
+ */
+
+#define MAX_BUF 1024
+#define MSG "Hello TLS"
+
+static ssize_t push(gnutls_transport_ptr_t tr, const void *data, size_t len)
+{
+ int fd = (long int)tr;
+
+ return send(fd, data, len, 0);
+}
+
+static void client(int fd, int server_init)
+{
+ int ret;
+ char buffer[MAX_BUF + 1];
+ gnutls_certificate_credentials_t clientx509cred;
+ gnutls_anon_client_credentials_t anoncred;
+ gnutls_session_t session;
+
+ global_init();
+
+ if (debug) {
+ gnutls_global_set_log_function(client_log_func);
+ gnutls_global_set_log_level(4711);
+ }
+
+ assert(gnutls_anon_allocate_client_credentials(&anoncred) >= 0);
+ assert(gnutls_certificate_allocate_credentials(&clientx509cred) >= 0);
+
+ /* Initialize TLS session
+ */
+ gnutls_init(&session, GNUTLS_CLIENT | GNUTLS_DATAGRAM);
+ gnutls_dtls_set_mtu(session, 1500);
+
+ assert(gnutls_priority_set_direct(session,
+ "NONE:+VERS-DTLS-ALL:+CIPHER-ALL:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL",
+ NULL) >= 0);
+
+ gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
+ gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, clientx509cred);
+
+ gnutls_transport_set_int(session, fd);
+ gnutls_transport_set_push_function(session, push);
+
+ /* Perform the TLS handshake
+ */
+ do {
+ ret = gnutls_handshake(session);
+ }
+ while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
+
+ if (ret < 0) {
+ fail("client: Handshake failed\n");
+ gnutls_perror(ret);
+ exit(1);
+ } else {
+ if (debug)
+ success("client: Handshake was completed\n");
+ }
+
+ if (debug)
+ success("client: TLS version is: %s\n",
+ gnutls_protocol_get_name
+ (gnutls_protocol_get_version(session)));
+
+ /* update priorities to allow cert auth */
+ assert(gnutls_priority_set_direct(session,
+ "NONE:+VERS-DTLS-ALL:+CIPHER-ALL:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ECDHE-RSA:+CURVE-ALL",
+ NULL) >= 0);
+
+ if (!server_init) {
+ sec_sleep(60);
+ if (debug)
+ success("Initiating client rehandshake\n");
+ do {
+ ret = gnutls_handshake(session);
+ }
+ while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
+
+ if (ret < 0) {
+ fail("2nd client gnutls_handshake: %s\n",
+ gnutls_strerror(ret));
+ terminate();
+ }
+ } else {
+ do {
+ ret = gnutls_record_recv(session, buffer, MAX_BUF);
+ } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
+ }
+
+ if (ret == 0) {
+ if (debug)
+ success("client: Peer has closed the TLS connection\n");
+ goto end;
+ } else if (ret < 0) {
+ if (server_init && ret == GNUTLS_E_REHANDSHAKE) {
+ if (debug)
+ success
+ ("Initiating rehandshake due to server request\n");
+ do {
+ ret = gnutls_handshake(session);
+ }
+ while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
+ }
+
+ if (ret != 0) {
+ fail("client: Error: %s\n", gnutls_strerror(ret));
+ exit(1);
+ }
+ }
+
+ do {
+ ret = gnutls_record_send(session, MSG, strlen(MSG));
+ } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+
+ end:
+
+ close(fd);
+
+ gnutls_deinit(session);
+
+ gnutls_certificate_free_credentials(clientx509cred);
+ gnutls_anon_free_client_credentials(anoncred);
+
+ gnutls_global_deinit();
+}
+
+/* These are global */
+pid_t child;
+
+static void terminate(void)
+{
+ int status;
+
+ kill(child, SIGTERM);
+ wait(&status);
+ exit(1);
+}
+
+static void server(int fd, int server_init)
+{
+ int ret;
+ char buffer[MAX_BUF + 1];
+ gnutls_certificate_credentials_t serverx509cred;
+ gnutls_anon_server_credentials_t anoncred;
+ gnutls_session_t session;
+ /* this must be called once in the program
+ */
+ global_init();
+
+ if (debug) {
+ gnutls_global_set_log_function(server_log_func);
+ gnutls_global_set_log_level(4711);
+ }
+
+ assert(gnutls_anon_allocate_server_credentials(&anoncred) >= 0);
+ assert(gnutls_certificate_allocate_credentials(&serverx509cred) >= 0);
+ assert(gnutls_certificate_set_x509_key_mem(serverx509cred,
+ &server_cert, &server_key,
+ GNUTLS_X509_FMT_PEM) >= 0);
+
+ gnutls_init(&session, GNUTLS_SERVER | GNUTLS_DATAGRAM);
+ gnutls_dtls_set_mtu(session, 1500);
+
+ /* avoid calling all the priority functions, since the defaults
+ * are adequate.
+ */
+ assert(gnutls_priority_set_direct(session,
+ "NONE:+VERS-DTLS-ALL:+CIPHER-ALL:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ECDHE-RSA:+ANON-ECDH:+CURVE-ALL",
+ NULL) >= 0);
+
+ gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
+ gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, serverx509cred);
+
+ gnutls_transport_set_int(session, fd);
+ gnutls_transport_set_push_function(session, push);
+
+ do {
+ ret = gnutls_handshake(session);
+ }
+ while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
+ if (ret < 0) {
+ close(fd);
+ gnutls_deinit(session);
+ fail("server: Handshake has failed (%s)\n\n",
+ gnutls_strerror(ret));
+ terminate();
+ }
+ if (debug)
+ success("server: Handshake was completed\n");
+
+ if (debug)
+ success("server: TLS version is: %s\n",
+ gnutls_protocol_get_name
+ (gnutls_protocol_get_version(session)));
+
+ if (gnutls_kx_get(session) != GNUTLS_KX_ANON_ECDH) {
+ fail("did not negotiate an anonymous ciphersuite on initial auth\n");
+ }
+
+ /* see the Getting peer's information example */
+ /* print_info(session); */
+
+ if (server_init) {
+ if (debug)
+ success("server: Sending dummy packet\n");
+ ret = gnutls_rehandshake(session);
+ if (ret < 0) {
+ fail("gnutls_rehandshake: %s\n", gnutls_strerror(ret));
+ terminate();
+ }
+
+ if (debug)
+ success("server: Initiating rehandshake\n");
+ do {
+ ret = gnutls_handshake(session);
+ }
+ while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
+
+ if (ret < 0) {
+ fail("server: 2nd gnutls_handshake: %s\n",
+ gnutls_strerror(ret));
+ terminate();
+ }
+ }
+
+ for (;;) {
+ memset(buffer, 0, MAX_BUF + 1);
+
+ do {
+ ret = gnutls_record_recv(session, buffer, MAX_BUF);
+ } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
+
+ if (ret == 0) {
+ if (debug)
+ success
+ ("server: Peer has closed the GnuTLS connection\n");
+ break;
+ } else if (ret < 0) {
+ if (!server_init && ret == GNUTLS_E_REHANDSHAKE) {
+ if (debug)
+ success
+ ("Initiating rehandshake due to client request\n");
+ do {
+ ret = gnutls_handshake(session);
+ }
+ while (ret < 0
+ && gnutls_error_is_fatal(ret) == 0);
+ if (ret == 0)
+ break;
+ }
+
+ fail("server: Received corrupted data(%s). Closing...\n", gnutls_strerror(ret));
+ terminate();
+ } else if (ret > 0) {
+ /* echo data back to the client
+ */
+ do {
+ ret =
+ gnutls_record_send(session, buffer,
+ strlen(buffer));
+ } while (ret == GNUTLS_E_AGAIN
+ || ret == GNUTLS_E_INTERRUPTED);
+ }
+ }
+
+ if (gnutls_kx_get(session) != GNUTLS_KX_ECDHE_RSA) {
+ fail("did not negotiate a certificate ciphersuite on second auth\n");
+ }
+
+ /* do not wait for the peer to close the connection.
+ */
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+
+ close(fd);
+ gnutls_deinit(session);
+
+ gnutls_certificate_free_credentials(serverx509cred);
+ gnutls_anon_free_server_credentials(anoncred);
+
+ gnutls_global_deinit();
+
+ if (debug)
+ success("server: finished\n");
+}
+
+static void start(int server_initiated)
+{
+ int fd[2];
+ int ret;
+
+ ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
+ if (ret < 0) {
+ perror("socketpair");
+ exit(1);
+ }
+
+ child = fork();
+ if (child < 0) {
+ perror("fork");
+ fail("fork");
+ exit(1);
+ }
+
+ if (child) {
+ int status = 0;
+ /* parent */
+
+ server(fd[0], server_initiated);
+ wait(&status);
+ if (WEXITSTATUS(status) != 0)
+ fail("Child died with status %d\n",
+ WEXITSTATUS(status));
+ } else {
+ close(fd[0]);
+ client(fd[1], server_initiated);
+ exit(0);
+ }
+}
+
+void doit(void)
+{
+ start(0);
+ start(1);
+}
+
+#endif /* _WIN32 */
projects / thirdparty / gnutls.git / commitdiff
