--- /dev/null
+/*
+ * 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 <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/dtls.h>
+#include <signal.h>
+#include <unistd.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include "utils.h"
+
+#ifdef _WIN32
+
+void doit(void)
+{
+ exit(77);
+}
+
+#else
+
+/* These are global */
+pid_t child;
+
+static void terminate(void)
+{
+ int status;
+
+ kill(child, SIGTERM);
+ wait(&status);
+ exit(1);
+}
+
+/* Tests whether we can send and receive from different processes
+ * using DTLS, either as server or client. DTLS is a superset of
+ * TLS, so correct behavior under fork means TLS would operate too.
+ */
+
+const char *side = "";
+
+static void tls_log_func(int level, const char *str)
+{
+ fprintf(stderr, "%s|<%d>| %s", side, level, str);
+}
+
+static unsigned char server_cert_pem[] =
+ "-----BEGIN CERTIFICATE-----\n"
+ "MIICHzCCAaWgAwIBAgIBCTAKBggqhkjOPQQDAjA+MQswCQYDVQQGEwJOTDERMA8G\n"
+ "A1UEChMIUG9sYXJTU0wxHDAaBgNVBAMTE1BvbGFyc3NsIFRlc3QgRUMgQ0EwHhcN\n"
+ "MTMwOTI0MTU1MjA0WhcNMjMwOTIyMTU1MjA0WjA0MQswCQYDVQQGEwJOTDERMA8G\n"
+ "A1UEChMIUG9sYXJTU0wxEjAQBgNVBAMTCWxvY2FsaG9zdDBZMBMGByqGSM49AgEG\n"
+ "CCqGSM49AwEHA0IABDfMVtl2CR5acj7HWS3/IG7ufPkGkXTQrRS192giWWKSTuUA\n"
+ "2CMR/+ov0jRdXRa9iojCa3cNVc2KKg76Aci07f+jgZ0wgZowCQYDVR0TBAIwADAd\n"
+ "BgNVHQ4EFgQUUGGlj9QH2deCAQzlZX+MY0anE74wbgYDVR0jBGcwZYAUnW0gJEkB\n"
+ "PyvLeLUZvH4kydv7NnyhQqRAMD4xCzAJBgNVBAYTAk5MMREwDwYDVQQKEwhQb2xh\n"
+ "clNTTDEcMBoGA1UEAxMTUG9sYXJzc2wgVGVzdCBFQyBDQYIJAMFD4n5iQ8zoMAoG\n"
+ "CCqGSM49BAMCA2gAMGUCMQCaLFzXptui5WQN8LlO3ddh1hMxx6tzgLvT03MTVK2S\n"
+ "C12r0Lz3ri/moSEpNZWqPjkCMCE2f53GXcYLqyfyJR078c/xNSUU5+Xxl7VZ414V\n"
+ "fGa5kHvHARBPc8YAIVIqDvHH1Q==\n"
+ "-----END CERTIFICATE-----\n";
+
+const gnutls_datum_t server_cert = { server_cert_pem,
+ sizeof(server_cert_pem)
+};
+
+static unsigned char server_key_pem[] =
+ "-----BEGIN EC PRIVATE KEY-----\n"
+ "MHcCAQEEIPEqEyB2AnCoPL/9U/YDHvdqXYbIogTywwyp6/UfDw6noAoGCCqGSM49\n"
+ "AwEHoUQDQgAEN8xW2XYJHlpyPsdZLf8gbu58+QaRdNCtFLX3aCJZYpJO5QDYIxH/\n"
+ "6i/SNF1dFr2KiMJrdw1VzYoqDvoByLTt/w==\n"
+ "-----END EC PRIVATE KEY-----\n";
+
+const gnutls_datum_t server_key = { server_key_pem,
+ sizeof(server_key_pem)
+};
+
+#define MSG "hello1111"
+#define MSG2 "xxxxxxxxxxxx"
+
+static
+void do_fork_stuff(gnutls_session_t session)
+{
+ pid_t pid;
+ int ret;
+ char buf[64];
+
+ /* separate sending from receiving */
+ pid = fork();
+ if (pid == -1) {
+ exit(1);
+ } else if (pid != 0) {
+ if (debug)
+ success("client: TLS version is: %s\n",
+ gnutls_protocol_get_name
+ (gnutls_protocol_get_version(session)));
+ sleep(1);
+ /* the server should reflect our messages */
+ ret = gnutls_record_recv(session, buf, sizeof(buf));
+ if (ret != sizeof(MSG)-1 || memcmp(buf, MSG, sizeof(MSG)-1) != 0) {
+ fail("client: recv failed: %s\n", gnutls_strerror(ret));
+ exit(1);
+ }
+
+ if (debug) {
+ fprintf(stderr, "client received: %.*s\n", ret, buf);
+ }
+
+ ret = gnutls_record_recv(session, buf, sizeof(buf));
+ if (ret != sizeof(MSG2)-1 || memcmp(buf, MSG2, sizeof(MSG2)-1) != 0) {
+ fail("client: recv2 failed: %s\n", gnutls_strerror(ret));
+ exit(1);
+ }
+
+ if (debug) {
+ fprintf(stderr, "client received: %.*s\n", ret, buf);
+ }
+
+ ret = gnutls_record_recv(session, buf, sizeof(buf));
+ if (ret != 0) {
+ fail("client: recv3 failed: %s\n", gnutls_strerror(ret));
+ exit(1);
+ }
+ } else if (pid == 0) { /* child */
+ ret = gnutls_record_send(session, MSG, sizeof(MSG)-1);
+ if (ret != sizeof(MSG)-1) {
+ fail("client: send failed: %s\n", gnutls_strerror(ret));
+ exit(1);
+ }
+
+ ret = gnutls_record_send(session, MSG2, sizeof(MSG2)-1);
+ if (ret != sizeof(MSG2)-1) {
+ fail("client: send2 failed: %s\n", gnutls_strerror(ret));
+ exit(1);
+ }
+ sleep(2);
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+ }
+}
+
+static void do_reflect_stuff(gnutls_session_t session)
+{
+ char buf[64];
+ unsigned buf_size;
+ int ret;
+
+ do {
+ ret = gnutls_record_recv(session, buf, sizeof(buf));
+ if (ret < 0) {
+ fail("server: recv failed: %s\n", gnutls_strerror(ret));
+ terminate();
+ }
+
+ if (ret == 0)
+ break;
+
+ buf_size = ret;
+ if (debug) {
+ fprintf(stderr, "server received: %.*s\n", buf_size, buf);
+ }
+
+ ret = gnutls_record_send(session, buf, buf_size);
+ if (ret < 0) {
+ fail("server: send failed: %s\n", gnutls_strerror(ret));
+ terminate();
+ }
+ } while(1);
+
+ /* do not wait for the peer to close the connection.
+ */
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+}
+
+static void client(int fd, unsigned do_fork)
+{
+ int ret;
+ gnutls_certificate_credentials_t x509_cred;
+ gnutls_session_t session;
+ /* Need to enable anonymous KX specifically. */
+
+ global_init();
+
+ if (debug) {
+ side = "client";
+ gnutls_global_set_log_function(tls_log_func);
+ gnutls_global_set_log_level(4711);
+ }
+
+ gnutls_certificate_allocate_credentials(&x509_cred);
+
+ /* Initialize TLS session
+ */
+ gnutls_init(&session, GNUTLS_CLIENT | GNUTLS_DATAGRAM);
+ gnutls_dtls_set_mtu(session, 1500);
+ gnutls_dtls_set_timeouts(session, 6 * 1000, 60 * 1000);
+ //gnutls_transport_set_push_function(session, push);
+
+ /* Use default priorities */
+ gnutls_priority_set_direct(session,
+ "NONE:+VERS-DTLS-ALL:+CIPHER-ALL:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ECDHE-ECDSA:+CURVE-ALL",
+ NULL);
+
+ /* put the anonymous credentials to the current session
+ */
+ 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 < 0) {
+ fail("client: Handshake failed\n");
+ gnutls_perror(ret);
+ exit(1);
+ } else {
+ if (debug)
+ success("client: Handshake was completed\n");
+ }
+
+ if (do_fork)
+ do_fork_stuff(session);
+ else
+ do_reflect_stuff(session);
+
+ close(fd);
+
+ gnutls_deinit(session);
+
+ gnutls_certificate_free_credentials(x509_cred);
+
+ gnutls_global_deinit();
+ exit(0);
+}
+
+
+static void server(int fd, unsigned do_fork)
+{
+ int ret;
+ gnutls_certificate_credentials_t x509_cred;
+ gnutls_session_t session;
+
+ /* this must be called once in the program
+ */
+ global_init();
+
+#if 0
+ if (debug) {
+ side = "server";
+ gnutls_global_set_log_function(tls_log_func);
+ gnutls_global_set_log_level(4711);
+ }
+#endif
+
+ 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 | GNUTLS_DATAGRAM);
+ gnutls_dtls_set_timeouts(session, 5 * 1000, 60 * 1000);
+ gnutls_dtls_set_mtu(session, 400);
+
+ /* avoid calling all the priority functions, since the defaults
+ * are adequate.
+ */
+ gnutls_priority_set_direct(session,
+ "NONE:+VERS-DTLS1.2:+CIPHER-ALL:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ECDHE-ECDSA:+CURVE-ALL",
+ 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) {
+ 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 (do_fork)
+ do_fork_stuff(session);
+ else
+ do_reflect_stuff(session);
+
+
+ close(fd);
+ gnutls_deinit(session);
+
+ gnutls_certificate_free_credentials(x509_cred);
+
+ gnutls_global_deinit();
+
+ if (debug)
+ success("server: finished\n");
+}
+
+static
+void run(unsigned do_fork)
+{
+ 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;
+ /* parent */
+
+ close(fd[1]);
+ client(fd[0], do_fork);
+ wait(&status);
+ if (WEXITSTATUS(status) != 0)
+ fail("Child died with status %d\n",
+ WEXITSTATUS(status));
+ } else {
+ close(fd[0]);
+ server(fd[1], 1-do_fork);
+ exit(0);
+ }
+}
+
+void doit(void)
+{
+ signal(SIGPIPE, SIG_IGN);
+ run(0);
+ run(1);
+}
+#endif /* _WIN32 */
projects / thirdparty / gnutls.git / commitdiff
