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-rw-r--r--tests/dtls-etm.c346
1 files changed, 346 insertions, 0 deletions
diff --git a/tests/dtls-etm.c b/tests/dtls-etm.c
new file mode 100644
index 0000000..1a8c1b5
--- /dev/null
+++ b/tests/dtls-etm.c
@@ -0,0 +1,346 @@
+/*
+ * 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>
+
+#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 <assert.h>
+
+#include "utils.h"
+#include "cert-common.h"
+
+static void terminate(void);
+
+/* This program tests whether EtM is negotiated 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);
+}
+
+/* A very basic TLS client, with anonymous authentication.
+ */
+
+#define MAX_BUF 1024
+
+static void client(int fd, const char *prio, unsigned etm)
+{
+ int ret;
+ char buffer[MAX_BUF + 1];
+ gnutls_anon_client_credentials_t anoncred;
+ 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_anon_allocate_client_credentials(&anoncred);
+ gnutls_certificate_allocate_credentials(&x509_cred);
+
+ /* Initialize TLS session
+ */
+ gnutls_init(&session, GNUTLS_CLIENT|GNUTLS_DATAGRAM);
+
+ /* Use default priorities */
+ assert(gnutls_priority_set_direct(session, prio, NULL)>=0);
+
+ /* put the anonymous credentials to the current session
+ */
+ gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
+ 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 (debug)
+ success("client: TLS version is: %s\n",
+ gnutls_protocol_get_name
+ (gnutls_protocol_get_version(session)));
+
+ if (etm != 0 && gnutls_session_etm_status(session) == 0) {
+ fail("client: EtM was not negotiated with %s!\n", prio);
+ exit(1);
+ } else if (etm == 0 && gnutls_session_etm_status(session) != 0) {
+ fail("client: EtM was negotiated with %s!\n", prio);
+ exit(1);
+ }
+
+ if (etm != 0 && ((gnutls_session_get_flags(session) & GNUTLS_SFLAGS_ETM) == 0)) {
+ fail("client: EtM was not negotiated with %s!\n", prio);
+ exit(1);
+ } else if (etm == 0 && ((gnutls_session_get_flags(session) & GNUTLS_SFLAGS_ETM) != 0)) {
+ fail("client: EtM was negotiated with %s!\n", prio);
+ exit(1);
+ }
+
+ 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) {
+ if (ret != 0) {
+ fail("client: Error: %s\n", gnutls_strerror(ret));
+ exit(1);
+ }
+ }
+
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+
+ end:
+
+ close(fd);
+
+ gnutls_deinit(session);
+
+ gnutls_anon_free_client_credentials(anoncred);
+ gnutls_certificate_free_credentials(x509_cred);
+
+ gnutls_global_deinit();
+}
+
+
+/* These are global */
+pid_t child;
+
+static void terminate(void)
+{
+ assert(child);
+ kill(child, SIGTERM);
+ exit(1);
+}
+
+static void server(int fd, const char *prio, unsigned etm)
+{
+ int ret;
+ char buffer[MAX_BUF + 1];
+ gnutls_session_t session;
+ gnutls_anon_server_credentials_t anoncred;
+ gnutls_certificate_credentials_t x509_cred;
+ unsigned to_send = sizeof(buffer)/4;
+
+ /* 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_anon_allocate_server_credentials(&anoncred);
+
+ gnutls_init(&session, GNUTLS_SERVER|GNUTLS_DATAGRAM);
+
+ /* avoid calling all the priority functions, since the defaults
+ * are adequate.
+ */
+ assert(gnutls_priority_set_direct(session, prio, NULL) >= 0);
+
+ gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
+ 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 (etm != 0 && gnutls_session_etm_status(session) == 0) {
+ fail("server: EtM was not negotiated with %s!\n", prio);
+ exit(1);
+ } else if (etm == 0 && gnutls_session_etm_status(session) != 0) {
+ fail("server: EtM was negotiated with %s!\n", prio);
+ exit(1);
+ }
+
+ if (etm != 0 && ((gnutls_session_get_flags(session) & GNUTLS_SFLAGS_ETM) == 0)) {
+ fail("server: EtM was not negotiated with %s!\n", prio);
+ exit(1);
+ } else if (etm == 0 && ((gnutls_session_get_flags(session) & GNUTLS_SFLAGS_ETM) != 0)) {
+ fail("server: EtM was negotiated with %s!\n", prio);
+ exit(1);
+ }
+
+ 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 {
+ do {
+ ret =
+ gnutls_record_send(session, buffer,
+ sizeof(buffer));
+ } while (ret == GNUTLS_E_AGAIN
+ || ret == GNUTLS_E_INTERRUPTED);
+
+ if (ret < 0) {
+ fail("Error sending %d byte packet: %s\n", to_send,
+ gnutls_strerror(ret));
+ terminate();
+ }
+ to_send++;
+ }
+ while (to_send < 64);
+
+ to_send = -1;
+ /* 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_certificate_free_credentials(x509_cred);
+
+ gnutls_global_deinit();
+
+ if (debug)
+ success("server: finished\n");
+}
+
+static void start(const char *prio, unsigned etm)
+{
+ 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) {
+ /* parent */
+ close(fd[1]);
+ server(fd[0], prio, etm);
+ kill(child, SIGTERM);
+ } else {
+ close(fd[0]);
+ client(fd[1], prio, etm);
+ exit(0);
+ }
+}
+
+#define AES_CBC "NONE:+VERS-DTLS1.0:-CIPHER-ALL:+AES-128-CBC:+SHA1:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL"
+#define AES_CBC_SHA256 "NONE:+VERS-DTLS1.2:-CIPHER-ALL:+RSA:+AES-128-CBC:+AES-256-CBC:+SHA256:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL"
+#define AES_GCM "NONE:+VERS-DTLS1.2:-CIPHER-ALL:+RSA:+AES-128-GCM:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL"
+
+static void ch_handler(int sig)
+{
+ int status;
+ wait(&status);
+ check_wait_status(status);
+ return;
+}
+
+void doit(void)
+{
+ signal(SIGCHLD, ch_handler);
+
+ start(AES_CBC, 1);
+ start(AES_CBC_SHA256, 1);
+ start(AES_GCM, 0);
+}
+
+#endif /* _WIN32 */
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