--- /dev/null
+/*
+ * Copyright (C) 2013 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) || !defined(ENABLE_ALPN)
+
+int main(int argc, char **argv)
+{
+ 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 "utils.h"
+
+static void terminate(void);
+
+/* This program tests whether the gnutls_record_get_state() works as
+ * expected.
+ */
+
+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);
+}
+
+/* These are global */
+static pid_t child;
+
+/* A very basic DTLS client, with anonymous authentication, that negotiates SRTP
+ */
+
+static void dump(const char *name, uint8_t *data, unsigned data_size)
+{
+ unsigned i;
+
+ fprintf(stderr, "%s", name);
+ for (i=0;i<data_size;i++)
+ fprintf(stderr, "%.2x", (unsigned)data[i]);
+ fprintf(stderr, "\n");
+}
+
+static void client(int fd)
+{
+ gnutls_session_t session;
+ int ret;
+ gnutls_datum_t proto;
+ gnutls_anon_client_credentials_t anoncred;
+ gnutls_datum_t mac_key, iv, cipher_key;
+ gnutls_datum_t read_mac_key, read_iv, read_cipher_key;
+ unsigned char seq_number[8];
+ unsigned char key_material[512], *p;
+ unsigned block_size, hash_size, key_size, iv_size;
+ const char *err;
+ /* Need to enable anonymous KX specifically. */
+
+ global_init();
+
+ if (debug) {
+ gnutls_global_set_log_function(client_log_func);
+ gnutls_global_set_log_level(4711);
+ }
+
+ gnutls_anon_allocate_client_credentials(&anoncred);
+
+ /* Initialize TLS session
+ */
+ gnutls_init(&session, GNUTLS_CLIENT);
+
+ /* Use default priorities */
+ ret = gnutls_priority_set_direct(session,
+ "NONE:+VERS-TLS1.0:+AES-128-CBC:+SHA1:+SIGN-ALL:+COMP-NULL:+ANON-DH:+ANON-ECDH:+CURVE-ALL",
+ &err);
+ if (ret < 0) {
+ fail("client: priority set failed (%s): %s\n",
+ gnutls_strerror(ret), err);
+ exit(1);
+ }
+
+ /* put the anonymous credentials to the current session
+ */
+ gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
+
+ 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: %s\n", strerror(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)));
+
+ ret = gnutls_cipher_get(session);
+ if (ret != GNUTLS_CIPHER_AES_128_CBC) {
+ fprintf(stderr, "negotiated unexpected cipher: %s\n", gnutls_cipher_get_name(ret));
+ exit(1);
+ }
+
+ ret = gnutls_mac_get(session);
+ if (ret != GNUTLS_MAC_SHA1) {
+ fprintf(stderr, "negotiated unexpected mac: %s\n", gnutls_mac_get_name(ret));
+ exit(1);
+ }
+
+ iv_size = 16;
+ hash_size = 20;
+ key_size = 16;
+ block_size = 2*hash_size + 2*key_size + 2 *iv_size;
+
+ ret = gnutls_prf(session, 13, "key expansion", 1, 0, NULL, block_size,
+ (void*)key_material);
+ if (ret < 0) {
+ fprintf(stderr, "error in %d\n", __LINE__);
+ gnutls_perror(ret);
+ exit(1);
+ }
+ p = key_material;
+
+ ret = gnutls_record_get_state(session, 0, &mac_key, &iv, &cipher_key, seq_number);
+ if (ret < 0) {
+ fprintf(stderr, "error in %d\n", __LINE__);
+ gnutls_perror(ret);
+ exit(1);
+ }
+
+ ret = gnutls_record_get_state(session, 1, &read_mac_key, &read_iv, &read_cipher_key, seq_number);
+ if (ret < 0) {
+ fprintf(stderr, "error in %d\n", __LINE__);
+ gnutls_perror(ret);
+ exit(1);
+ }
+
+ if (hash_size != mac_key.size || memcmp(p, mac_key.data, hash_size) != 0) {
+ dump("MAC:", mac_key.data, mac_key.size);
+ dump("Block:", key_material, block_size);
+ fprintf(stderr, "error in %d\n", __LINE__);
+ exit(1);
+ }
+ p+= hash_size;
+
+ if (hash_size != read_mac_key.size || memcmp(p, read_mac_key.data, hash_size) != 0) {
+ dump("MAC:", read_mac_key.data, read_mac_key.size);
+ dump("Block:", key_material, block_size);
+ fprintf(stderr, "error in %d\n", __LINE__);
+ exit(1);
+ }
+ p+= hash_size;
+
+ if (key_size != cipher_key.size || memcmp(p, cipher_key.data, key_size) != 0) {
+ fprintf(stderr, "error in %d\n", __LINE__);
+ exit(1);
+ }
+ p+= key_size;
+
+ if (key_size != read_cipher_key.size || memcmp(p, read_cipher_key.data, key_size) != 0) {
+ fprintf(stderr, "error in %d\n", __LINE__);
+ exit(1);
+ }
+ p+= key_size;
+
+ if (iv_size != iv.size || memcmp(p, iv.data, iv_size) != 0) {
+ fprintf(stderr, "error in %d\n", __LINE__);
+ exit(1);
+ }
+ p+=iv_size;
+
+ if (iv_size != read_iv.size || memcmp(p, read_iv.data, iv_size) != 0) {
+ fprintf(stderr, "error in %d\n", __LINE__);
+ exit(1);
+ }
+
+ /* check whether the key material matches our calculations */
+
+
+ if (debug) {
+ fprintf(stderr, "selected protocol: %.*s\n",
+ (int) proto.size, proto.data);
+ }
+
+
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+
+ close(fd);
+
+ gnutls_deinit(session);
+
+ gnutls_anon_free_client_credentials(anoncred);
+
+ gnutls_global_deinit();
+}
+
+static void terminate(void)
+{
+ int status;
+
+ kill(child, SIGTERM);
+ wait(&status);
+ exit(1);
+}
+
+static void server(int fd)
+{
+ int ret;
+ gnutls_session_t session;
+ gnutls_anon_server_credentials_t anoncred;
+ gnutls_dh_params_t dh_params;
+ const gnutls_datum_t p3 =
+ { (unsigned char *) pkcs3, strlen(pkcs3) };
+
+ /* 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);
+ }
+
+ gnutls_anon_allocate_server_credentials(&anoncred);
+ gnutls_dh_params_init(&dh_params);
+ gnutls_dh_params_import_pkcs3(dh_params, &p3, GNUTLS_X509_FMT_PEM);
+ gnutls_anon_set_server_dh_params(anoncred, dh_params);
+
+ gnutls_init(&session, GNUTLS_SERVER);
+
+ /* avoid calling all the priority functions, since the defaults
+ * are adequate.
+ */
+ ret = gnutls_priority_set_direct(session,
+ "NORMAL:+ANON-DH:+ANON-ECDH", NULL);
+ if (ret < 0) {
+ fail("server: priority set failed (%s)\n\n",
+ gnutls_strerror(ret));
+ terminate();
+ }
+
+ gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
+
+ 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)));
+
+ /* do not wait for the peer to close the connection.
+ */
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+
+ close(fd);
+ gnutls_deinit(session);
+
+ gnutls_anon_free_server_credentials(anoncred);
+
+ gnutls_global_deinit();
+
+ if (debug)
+ success("server: finished\n");
+}
+
+static void start(void)
+{
+ 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 */
+
+ server(fd[0]);
+ wait(&status);
+ if (WEXITSTATUS(status) != 0)
+ fail("Child died with status %d\n",
+ WEXITSTATUS(status));
+ } else {
+ close(fd[0]);
+ client(fd[1]);
+ exit(0);
+ }
+}
+
+void doit(void)
+{
+ start();
+}
+
+#endif /* _WIN32 */
projects / thirdparty / gnutls.git / commitdiff
