--- /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 <signal.h>
+#include "cert-common.h"
+#include "utils.h"
+
+static void terminate(void);
+
+/* This program tests that a client cannot send any unencrypted data
+ * during the handshake process. That is to ensure we protect buggy clients
+ * from receiving unauthenticated data over the wire.
+ */
+
+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 int handshake_callback(gnutls_session_t session, unsigned int htype,
+ unsigned post, unsigned int incoming, const gnutls_datum_t *msg)
+{
+ int ret;
+ char c = 0;
+
+ if (htype == GNUTLS_HANDSHAKE_FINISHED)
+ return 0;
+
+ gnutls_record_set_timeout(session, 10*1000);
+
+ /* sending */
+ ret = gnutls_record_recv(session, &c, 1);
+ if (ret != GNUTLS_E_UNAVAILABLE_DURING_HANDSHAKE) {
+ fail("gnutls_record_recv returned %s/%d at %s\n", gnutls_strerror(ret), ret, gnutls_handshake_description_get_name(htype));
+ } else {
+ success("expected behavior after %s\n", gnutls_handshake_description_get_name(htype));
+ }
+
+ gnutls_record_set_timeout(session, 0);
+
+ return 0;
+}
+
+
+#define MAX_BUF 1024
+
+static void client(int fd)
+{
+ int ret;
+ char buffer[MAX_BUF + 1];
+ gnutls_certificate_credentials_t x509_cred;
+ gnutls_session_t session;
+ /* Need to enable anonymous KX specifically. */
+
+ global_init();
+
+ if (debug) {
+ gnutls_global_set_log_function(client_log_func);
+ gnutls_global_set_log_level(7);
+ }
+
+ gnutls_certificate_allocate_credentials(&x509_cred);
+
+ /* Initialize TLS session
+ */
+ gnutls_init(&session, GNUTLS_CLIENT);
+
+ /* Use default priorities */
+ gnutls_priority_set_direct(session, "NORMAL:-KX-ALL:+ECDHE-RSA", NULL);
+
+ gnutls_handshake_set_hook_function(session, GNUTLS_HANDSHAKE_ANY,
+ GNUTLS_HOOK_PRE,
+ handshake_callback);
+
+ gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
+
+ gnutls_transport_set_int(session, fd);
+
+ /* Perform the TLS handshake
+ */
+ do {
+ ret = gnutls_handshake(session);
+ }
+ while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
+
+ if (ret == GNUTLS_E_UNSUPPORTED_SIGNATURE_ALGORITHM) {
+ /* success */
+ goto end;
+ }
+
+ if (ret < 0) {
+ fail("client: Handshake failed: %s\n", gnutls_strerror(ret));
+ terminate();
+ } 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)));
+
+ do {
+ do {
+ ret = gnutls_record_recv(session, buffer, MAX_BUF);
+ } while (ret == GNUTLS_E_AGAIN
+ || ret == GNUTLS_E_INTERRUPTED);
+ } while (ret > 0);
+
+ if (ret == 0) {
+ if (debug)
+ success
+ ("client: Peer has closed the TLS connection\n");
+ goto end;
+ } else if (ret < 0) {
+ fail("client: Error: %s\n", gnutls_strerror(ret));
+ terminate();
+ }
+
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+
+ end:
+
+ close(fd);
+
+ gnutls_deinit(session);
+
+ gnutls_certificate_free_credentials(x509_cred);
+
+ gnutls_global_deinit();
+}
+
+
+/* These are global */
+pid_t child;
+
+static void terminate(void)
+{
+ kill(child, SIGTERM);
+ exit(1);
+}
+
+static void server(int fd)
+{
+ int ret;
+ char buffer[MAX_BUF + 1];
+ gnutls_session_t session;
+ gnutls_certificate_credentials_t x509_cred;
+
+ /* this must be called once in the program
+ */
+ global_init();
+ memset(buffer, 0, sizeof(buffer));
+
+ if (debug) {
+ gnutls_global_set_log_function(server_log_func);
+ gnutls_global_set_log_level(4711);
+ }
+
+ gnutls_certificate_allocate_credentials(&x509_cred);
+ gnutls_certificate_set_x509_key_mem(x509_cred, &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, "NORMAL", NULL);
+
+ gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
+
+ gnutls_transport_set_int(session, fd);
+
+ do {
+ ret = gnutls_handshake(session);
+ } while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
+ if (ret < 0) {
+ /* failure is expected here */
+ goto end;
+ }
+
+ 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)));
+
+ /* do not wait for the peer to close the connection.
+ */
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+
+ end:
+ close(fd);
+ gnutls_deinit(session);
+
+ gnutls_certificate_free_credentials(x509_cred);
+
+ gnutls_global_deinit();
+
+ if (debug)
+ success("server: finished\n");
+}
+
+static void ch_handler(int sig)
+{
+ return;
+}
+
+void doit(void)
+{
+ int fd[2];
+ int ret, status = 0;
+
+ signal(SIGCHLD, ch_handler);
+ signal(SIGPIPE, SIG_IGN);
+
+ 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) {
+ /* parent */
+ close(fd[1]);
+ client(fd[0]);
+ waitpid(child, &status, 0);
+ check_wait_status(status);
+ } else {
+ close(fd[0]);
+ server(fd[1]);
+ exit(0);
+ }
+}
+
+#endif /* _WIN32 */
projects / thirdparty / gnutls.git / commitdiff
