--- /dev/null
+/*
+ * Copyright (C) 2004-2016 Free Software Foundation, Inc.
+ * Copyright (C) 2013 Adam Sampson <ats@offog.org>
+ * Copyright (C) 2016-2019 Red Hat, Inc.
+ *
+ * Author: Simon Josefsson, Nikos Mavrogiannopoulos, 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 Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>
+ */
+
+/* Parts copied from GnuTLS example programs. */
+
+#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
+
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
+#include <string.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#if !defined(_WIN32)
+#include <sys/wait.h>
+#endif
+#include <unistd.h>
+#include <gnutls/gnutls.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <assert.h>
+#include "utils.h"
+#include "cert-common.h"
+#include "virt-time.h"
+
+#define SKIP8(pos, total) { \
+ uint8_t _s; \
+ if (pos+1 > total) fail("error\n"); \
+ _s = msg->data[pos]; \
+ if ((size_t)(pos+1+_s) > total) fail("error\n"); \
+ pos += 1+_s; \
+ }
+
+pid_t child;
+
+/* A very basic TLS client, with anonymous authentication.
+ */
+
+#define SESSIONS 2
+#define MAX_BUF 5*1024
+#define MSG "Hello TLS"
+
+/* 2^13, which is not supported by max_fragment_length */
+#define MAX_DATA_SIZE 8192
+
+#define HANDSHAKE_SESSION_ID_POS (2+32)
+
+static void tls_log_func(int level, const char *str)
+{
+ fprintf(stderr, "%s |<%d>| %s", child ? "server" : "client", level,
+ str);
+}
+
+static int ext_callback(void *ctx, unsigned tls_id, const unsigned char *data, unsigned size)
+{
+ if (tls_id == 28) { /* record size limit */
+ uint16_t max_data_size;
+
+ assert(size == 2);
+ max_data_size = (data[0] << 8) | data[1];
+ if (max_data_size == MAX_DATA_SIZE)
+ fail("record_size_limit is not reset: %u == %u\n",
+ max_data_size, MAX_DATA_SIZE);
+ }
+ return 0;
+}
+
+static int handshake_callback(gnutls_session_t session, unsigned int htype,
+ unsigned post, unsigned int incoming, const gnutls_datum_t *msg)
+{
+ int ret;
+ unsigned pos;
+ gnutls_datum_t mmsg;
+
+ if (!post)
+ return 0;
+
+ switch (htype) {
+ case GNUTLS_HANDSHAKE_ENCRYPTED_EXTENSIONS:
+ ret = gnutls_ext_raw_parse(NULL, ext_callback, msg, 0);
+ assert(ret >= 0);
+ break;
+ case GNUTLS_HANDSHAKE_SERVER_HELLO:
+ assert(msg->size >= HANDSHAKE_SESSION_ID_POS);
+ pos = HANDSHAKE_SESSION_ID_POS;
+ SKIP8(pos, msg->size);
+ pos += 3;
+
+ mmsg.data = &msg->data[pos];
+ mmsg.size = msg->size - pos;
+ ret = gnutls_ext_raw_parse(NULL, ext_callback, &mmsg, 0);
+ assert(ret >= 0);
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static void client(int sds[], const char *prio)
+{
+ int ret, ii;
+ gnutls_session_t session;
+ char buffer[MAX_BUF + 1];
+ gnutls_certificate_credentials_t clientx509cred;
+
+ /* variables used in session resuming
+ */
+ int t;
+ gnutls_datum_t session_data = {NULL, 0};
+
+ if (debug) {
+ gnutls_global_set_log_function(tls_log_func);
+ gnutls_global_set_log_level(4);
+ }
+
+ gnutls_certificate_allocate_credentials(&clientx509cred);
+
+ assert(gnutls_certificate_set_x509_key_mem(clientx509cred,
+ &cli_cert, &cli_key,
+ GNUTLS_X509_FMT_PEM) >= 0);
+
+ for (t = 0; t < SESSIONS; t++) {
+ int sd = sds[t];
+
+ assert(gnutls_init(&session, GNUTLS_CLIENT)>=0);
+
+ ret = gnutls_priority_set_direct(session, prio, NULL);
+ if (ret < 0) {
+ fail("prio: %s\n", gnutls_strerror(ret));
+ }
+
+ gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, clientx509cred);
+
+ if (t == 0) {
+ ret = gnutls_record_set_max_size(session, MAX_DATA_SIZE);
+ if (ret < 0)
+ fail("gnutls_set_max_size: %s\n", gnutls_strerror(ret));
+ }
+
+ if (t > 0) {
+ /* if this is not the first time we connect */
+ gnutls_session_set_data(session, session_data.data,
+ session_data.size);
+
+ gnutls_handshake_set_hook_function(session,
+ GNUTLS_HANDSHAKE_ANY,
+ GNUTLS_HOOK_POST,
+ handshake_callback);
+ }
+
+ gnutls_transport_set_int(session, sd);
+
+ /* Perform the TLS handshake
+ */
+ gnutls_handshake_set_timeout(session, 20 * 1000);
+ 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);
+ break;
+ } else {
+ if (debug)
+ success
+ ("client: Handshake was completed\n");
+ }
+
+ if (t == 0) {
+ /* get the session data size */
+ ret =
+ gnutls_session_get_data2(session,
+ &session_data);
+ if (ret < 0)
+ fail("Getting resume data failed\n");
+
+ } else { /* the second time we connect */
+ /* check if we actually resumed the previous session */
+ if (gnutls_session_is_resumed(session) == 0) {
+ fail("- Previous session was resumed but NOT expected\n");
+ }
+ }
+
+ gnutls_record_send(session, MSG, strlen(MSG));
+
+ do {
+ ret = gnutls_record_recv(session, buffer, MAX_BUF);
+ } while (ret == GNUTLS_E_AGAIN);
+ if (ret == 0) {
+ if (debug)
+ success
+ ("client: Peer has closed the TLS connection\n");
+ break;
+ } else if (ret < 0) {
+ fail("client: Error: %s\n", gnutls_strerror(ret));
+ }
+
+ if (debug) {
+ printf("- Received %d bytes: ", ret);
+ for (ii = 0; ii < ret; ii++) {
+ fputc(buffer[ii], stdout);
+ }
+ fputs("\n", stdout);
+ }
+
+ gnutls_bye(session, GNUTLS_SHUT_RDWR);
+
+ close(sd);
+
+ gnutls_deinit(session);
+ }
+ gnutls_free(session_data.data);
+
+ gnutls_certificate_free_credentials(clientx509cred);
+}
+
+/* These are global */
+static gnutls_datum_t session_ticket_key = { NULL, 0 };
+
+
+gnutls_certificate_credentials_t serverx509cred;
+
+static void global_stop(void)
+{
+ if (debug)
+ success("global stop\n");
+
+ gnutls_certificate_free_credentials(serverx509cred);
+}
+
+static void server(int sds[], const char *prio)
+{
+ int t;
+ int ret;
+ gnutls_session_t session;
+ char buffer[MAX_BUF + 1];
+ unsigned iflags = GNUTLS_SERVER;
+
+ virt_time_init();
+
+ /* this must be called once in the program, it is mostly for the server.
+ */
+ if (debug) {
+ gnutls_global_set_log_function(tls_log_func);
+ gnutls_global_set_log_level(4);
+ }
+
+ gnutls_certificate_allocate_credentials(&serverx509cred);
+ assert(gnutls_certificate_set_x509_key_mem(serverx509cred,
+ &server_cert, &server_key, GNUTLS_X509_FMT_PEM) >= 0);
+
+ gnutls_session_ticket_key_generate(&session_ticket_key);
+
+ for (t = 0; t < SESSIONS; t++) {
+ int sd = sds[t];
+
+ assert(gnutls_init(&session, iflags) >= 0);
+
+ /* avoid calling all the priority functions, since the defaults
+ * are adequate.
+ */
+ assert(gnutls_priority_set_direct(session, prio, NULL) >= 0);
+
+
+ gnutls_session_ticket_enable_server(session,
+ &session_ticket_key);
+
+ gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, serverx509cred);
+ gnutls_transport_set_int(session, sd);
+ gnutls_handshake_set_timeout(session, 20 * 1000);
+
+ do {
+ ret = gnutls_handshake(session);
+ } while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
+ if (ret < 0) {
+ close(sd);
+ gnutls_deinit(session);
+ kill(child, SIGTERM);
+ fail("server: Handshake has failed (%s)\n\n",
+ gnutls_strerror(ret));
+ return;
+ }
+ if (debug)
+ success("server: Handshake was completed\n");
+
+ if (t > 0) {
+ ret = gnutls_session_is_resumed(session);
+ if (ret == 0) {
+ fail("server: session_is_resumed error (%d)\n", t);
+ }
+ }
+
+ /* see the Getting peer's information example */
+ /* print_info(session); */
+
+ for (;;) {
+ memset(buffer, 0, MAX_BUF + 1);
+ ret = gnutls_record_recv(session, buffer, MAX_BUF);
+
+ if (ret == 0) {
+ if (debug)
+ success
+ ("server: Peer has closed the GnuTLS connection\n");
+ break;
+ } else if (ret < 0) {
+ kill(child, SIGTERM);
+ fail("server: Received corrupted data(%d). Closing...\n", ret);
+ break;
+ } else if (ret > 0) {
+ /* echo data back to the client
+ */
+ gnutls_record_send(session, buffer,
+ strlen(buffer));
+ }
+ }
+ /* do not wait for the peer to close the connection.
+ */
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+
+ close(sd);
+
+ gnutls_deinit(session);
+ }
+
+ gnutls_free(session_ticket_key.data);
+ session_ticket_key.data = NULL;
+
+ if (debug)
+ success("server: finished\n");
+}
+
+static void run(const char *prio)
+{
+ int client_sds[SESSIONS], server_sds[SESSIONS];
+ int j;
+ int err;
+
+ signal(SIGCHLD, SIG_IGN);
+ signal(SIGPIPE, SIG_IGN);
+
+ for (j = 0; j < SESSIONS; j++) {
+ int sockets[2];
+
+ err = socketpair(AF_UNIX, SOCK_STREAM, 0, sockets);
+ if (err == -1) {
+ perror("socketpair");
+ fail("socketpair failed\n");
+ return;
+ }
+
+ server_sds[j] = sockets[0];
+ client_sds[j] = sockets[1];
+ }
+
+ child = fork();
+ if (child < 0) {
+ perror("fork");
+ fail("fork\n");
+ return;
+ }
+
+ if (child) {
+ int status = 0;
+ /* parent */
+ for (j = 0; j < SESSIONS; j++)
+ close(client_sds[j]);
+ server(server_sds, prio);
+
+ waitpid(child, &status, 0);
+ check_wait_status(status);
+ global_stop();
+ } else {
+ for (j = 0; j < SESSIONS; j++)
+ close(server_sds[j]);
+ client(client_sds, prio);
+ exit(0);
+ }
+}
+
+void doit(void)
+{
+ run("NORMAL:-VERS-ALL:+VERS-TLS1.2");
+ run("NORMAL:-VERS-ALL:+VERS-TLS1.3");
+}
+
+#endif /* _WIN32 */
projects / thirdparty / gnutls.git / commitdiff
