gnutls_record_send(gnutls_session_t session, const void *data,
size_t data_size)
{
+ return gnutls_record_send2(session, data, data_size, 0, 0);
+}
+
+/**
+ * gnutls_record_send2:
+ * @session: is a #gnutls_session_t type.
+ * @data: contains the data to send
+ * @data_size: is the length of the data
+ * @pad: padding to be added to the record
+ * @flags: must be zero
+ *
+ * This function is identical to gnutls_record_send() except that it
+ * takes an extra argument to specify padding to be added the record.
+ * To determine the maximum size of padding, use
+ * gnutls_record_get_max_size() and gnutls_record_overhead_size().
+ *
+ * Returns: The number of bytes sent, or a negative error code. The
+ * number of bytes sent might be less than @data_size. The maximum
+ * number of bytes this function can send in a single call depends
+ * on the negotiated maximum record size.
+ **/
+ssize_t
+gnutls_record_send2(gnutls_session_t session, const void *data,
+ size_t data_size, size_t pad, unsigned flags)
+{
+ const version_entry_st *vers = get_version(session);
+ size_t max_pad = 0;
int ret;
if (unlikely(!session->internals.initial_negotiation_completed)) {
return gnutls_assert_val(GNUTLS_E_UNAVAILABLE_DURING_HANDSHAKE);
}
+ if (unlikely(!vers))
+ return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR);
+
+ if (vers->tls13_sem)
+ max_pad = gnutls_record_get_max_size(session) - gnutls_record_overhead_size(session);
+
+ if (pad > max_pad)
+ return gnutls_assert_val(GNUTLS_E_INVALID_REQUEST);
+
switch(session->internals.rsend_state) {
case RECORD_SEND_NORMAL:
- return _gnutls_send_int(session, GNUTLS_APPLICATION_DATA,
- -1, EPOCH_WRITE_CURRENT, data,
- data_size, MBUFFER_FLUSH);
+ return _gnutls_send_tlen_int(session, GNUTLS_APPLICATION_DATA,
+ -1, EPOCH_WRITE_CURRENT, data,
+ data_size, pad, MBUFFER_FLUSH);
case RECORD_SEND_CORKED:
case RECORD_SEND_CORKED_TO_KU:
return append_data_to_corked(session, data, data_size);
--- /dev/null
+/*
+ * Copyright (C) 2012-2018 Free Software Foundation, Inc.
+ *
+ * Author: 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/>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#if defined(_WIN32)
+
+int main(void)
+{
+ 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"
+
+#define MAX_BUF 1024
+#define HIGH(x) (3*x)
+static void terminate(void);
+static size_t total;
+
+/* This program tests the robustness of record sending with padding.
+ */
+
+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.
+ */
+
+
+
+static ssize_t
+push(gnutls_transport_ptr_t tr, const void *data, size_t len)
+{
+ int fd = (long int) tr;
+
+ total += len;
+ return send(fd, data, len, 0);
+}
+
+static void client(int fd, const char *prio)
+{
+ 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);
+
+ /* Use default priorities */
+ gnutls_priority_set_direct(session, prio, NULL);
+
+ /* 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)));
+
+ 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)
+{
+ kill(child, SIGTERM);
+ exit(1);
+}
+
+static void server(int fd, const char *prio, size_t pad)
+{
+ int ret;
+ char buffer[MAX_BUF + 1];
+ gnutls_session_t session;
+ gnutls_anon_server_credentials_t anoncred;
+ gnutls_certificate_credentials_t x509_cred;
+ size_t expected;
+
+ /* 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);
+
+ /* avoid calling all the priority functions, since the defaults
+ * are adequate.
+ */
+ gnutls_priority_set_direct(session, prio, NULL);
+
+ 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 (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)));
+
+ gnutls_transport_set_push_function(session, push);
+
+ total = 0;
+ do {
+ ret =
+ gnutls_record_send2(session, buffer,
+ sizeof(buffer),
+ pad, 0);
+ } while (ret == GNUTLS_E_AGAIN
+ || ret == GNUTLS_E_INTERRUPTED);
+
+ if (ret < 0) {
+ fail("Error sending packet: %s\n",
+ gnutls_strerror(ret));
+ terminate();
+ }
+
+ expected = sizeof(buffer) + pad + gnutls_record_overhead_size(session);
+ if (total != expected) {
+ fail("Sent data (%u) are lower than expected (%u)\n",
+ (unsigned) total, (unsigned) expected);
+ terminate();
+ }
+
+ /* 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, size_t pad)
+{
+ 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, pad);
+ kill(child, SIGTERM);
+ } else {
+ close(fd[0]);
+ client(fd[1], prio);
+ exit(0);
+ }
+}
+
+#define AES_GCM "NONE:+VERS-TLS1.3:+AES-256-GCM:+AEAD:+SIGN-ALL:+GROUP-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_GCM, HIGH(MAX_BUF+1)-(MAX_BUF+1));
+ start(AES_GCM, 0);
+ start(AES_GCM, 1);
+}
+
+#endif /* _WIN32 */
projects / thirdparty / gnutls.git / commitdiff
