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/*
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* Copyright (C) 2019 Nikos Mavrogiannopoulos
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*
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* Author: Nikos Mavrogiannopoulos
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*
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* This file is part of GnuTLS.
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*
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* GnuTLS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuTLS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#if defined(_WIN32)
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int main()
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{
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exit(77);
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}
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#else
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#include <string.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <sys/wait.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <signal.h>
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#include <assert.h>
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#include <gnutls/gnutls.h>
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#include <gnutls/dtls.h>
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#include "utils.h"
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static void server_log_func(int level, const char *str)
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{
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fprintf(stderr, "server|<%d>| %s", level, str);
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}
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static void client_log_func(int level, const char *str)
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{
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fprintf(stderr, "client|<%d>| %s", level, str);
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}
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/* A DTLS client handling DTLS 1.2 resumption under AnyConnect protocol which sets premaster secret.
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*/
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#define MAX_BUF 1024
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static ssize_t
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push(gnutls_transport_ptr_t tr, const void *data, size_t len)
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{
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int fd = (long int) tr;
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return send(fd, data, len, 0);
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}
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static gnutls_datum_t master =
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{ (void*)"\x44\x66\x44\xa9\xb6\x29\xed\x6e\xd6\x93\x15\xdb\xf0\x7d\x4b\x2e\x18\xb1\x9d\xed\xff\x6a\x86\x76\xc9\x0e\x16\xab\xc2\x10\xbb\x17\x99\x24\xb1\xd9\xb9\x95\xe7\xea\xea\xea\xea\xea\xff\xaa\xac", 48};
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static gnutls_datum_t sess_id =
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{ (void*)"\xd9\xb9\x95\xe7\xea", 5};
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static void client(int fd, const char *prio, int proto, int cipher, int kx, int mac, const char *exp_desc)
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{
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int ret;
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char buffer[MAX_BUF + 1];
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char *desc;
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gnutls_certificate_credentials_t xcred;
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gnutls_session_t session;
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global_init();
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if (debug) {
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gnutls_global_set_log_function(client_log_func);
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gnutls_global_set_log_level(4711);
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}
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gnutls_certificate_allocate_credentials(&xcred);
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gnutls_init(&session, GNUTLS_CLIENT | GNUTLS_DATAGRAM);
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gnutls_dtls_set_mtu(session, 1500);
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gnutls_handshake_set_timeout(session, 20 * 1000);
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assert(gnutls_priority_set_direct(session,
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prio,
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NULL) >= 0);
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ret = gnutls_session_set_premaster(session, GNUTLS_CLIENT,
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proto, kx, cipher, mac,
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GNUTLS_COMP_NULL, &master, &sess_id);
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if (ret < 0) {
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fail("client: gnutls_session_set_premaster failed: %s\n", gnutls_strerror(ret));
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exit(1);
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}
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gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, xcred);
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gnutls_transport_set_int(session, fd);
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gnutls_transport_set_push_function(session, push);
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/* Perform the TLS handshake
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*/
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do {
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ret = gnutls_handshake(session);
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}
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while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
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if (ret < 0) {
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fail("client: Handshake failed\n");
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gnutls_perror(ret);
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exit(1);
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} else {
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if (debug)
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success("client: Handshake was completed\n");
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}
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desc = gnutls_session_get_desc(session);
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if (desc == NULL)
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fail("client: gnutls_session_get_desc: NULL\n");
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if (strcmp(desc, exp_desc) != 0)
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fail("client: gnutls_session_get_desc: found null str: %s\n", desc);
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success(" - connected with: %s\n", desc);
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gnutls_free(desc);
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if (debug)
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success("client: TLS version is: %s\n",
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gnutls_protocol_get_name
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(gnutls_protocol_get_version(session)));
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do {
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ret = gnutls_record_recv(session, buffer, sizeof(buffer)-1);
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} while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
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if (ret == 0) {
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if (debug)
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success
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("client: Peer has closed the TLS connection\n");
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goto end;
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} else if (ret < 0) {
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fail("client: Error: %s\n", gnutls_strerror(ret));
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exit(1);
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}
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gnutls_bye(session, GNUTLS_SHUT_WR);
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end:
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close(fd);
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gnutls_deinit(session);
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gnutls_certificate_free_credentials(xcred);
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gnutls_global_deinit();
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}
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static void server(int fd, const char *prio, int proto, int cipher, int kx, int mac)
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{
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int ret;
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gnutls_certificate_credentials_t xcred;
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char buffer[MAX_BUF + 1];
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gnutls_session_t session;
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/* this must be called once in the program
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*/
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global_init();
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if (debug) {
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gnutls_global_set_log_function(server_log_func);
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gnutls_global_set_log_level(4711);
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}
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gnutls_certificate_allocate_credentials(&xcred);
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gnutls_init(&session, GNUTLS_SERVER | GNUTLS_DATAGRAM);
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gnutls_handshake_set_timeout(session, 20 * 1000);
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gnutls_dtls_set_mtu(session, 1500);
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/* avoid calling all the priority functions, since the defaults
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* are adequate.
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*/
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assert(gnutls_priority_set_direct(session,
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prio,
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NULL) >= 0);
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ret = gnutls_session_set_premaster(session, GNUTLS_SERVER,
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proto, kx, cipher, mac,
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GNUTLS_COMP_NULL, &master, &sess_id);
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if (ret < 0) {
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fail("server: gnutls_session_set_premaster failed: %s\n", gnutls_strerror(ret));
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exit(1);
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}
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gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, xcred);
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gnutls_transport_set_int(session, fd);
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gnutls_transport_set_push_function(session, push);
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do {
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ret = gnutls_handshake(session);
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}
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while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
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if (ret < 0) {
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close(fd);
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gnutls_deinit(session);
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fail("server: Handshake has failed (%s)\n\n",
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gnutls_strerror(ret));
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}
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if (debug)
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success("server: Handshake was completed\n");
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if (debug)
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success("server: TLS version is: %s\n",
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gnutls_protocol_get_name
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(gnutls_protocol_get_version(session)));
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/* see the Getting peer's information example */
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/* print_info(session); */
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memset(buffer, 1, sizeof(buffer));
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do {
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ret = gnutls_record_send(session, buffer, sizeof(buffer)-1);
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} while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
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if (ret < 0) {
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close(fd);
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gnutls_deinit(session);
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fail("server: data sending has failed (%s)\n\n",
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gnutls_strerror(ret));
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}
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/* do not wait for the peer to close the connection.
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*/
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gnutls_bye(session, GNUTLS_SHUT_WR);
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close(fd);
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gnutls_deinit(session);
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gnutls_certificate_free_credentials(xcred);
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gnutls_global_deinit();
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if (debug)
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success("server: finished\n");
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}
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|
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static void run(const char *name, const char *prio, int proto, int cipher, int kx, int mac, const char *exp_desc)
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{
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int fd[2];
|
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int ret;
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pid_t child;
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success("Testing %s\n", name);
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ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
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if (ret < 0) {
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perror("socketpair");
|
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exit(1);
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}
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|
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child = fork();
|
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991b93 |
if (child < 0) {
|
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991b93 |
perror("fork");
|
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fail("fork");
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991b93 |
exit(1);
|
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991b93 |
}
|
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991b93 |
|
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991b93 |
if (child) {
|
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991b93 |
int status;
|
|
Packit Service |
991b93 |
/* parent */
|
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991b93 |
|
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991b93 |
close(fd[1]);
|
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server(fd[0], prio, proto, cipher, kx, mac);
|
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Packit Service |
991b93 |
wait(&status);
|
|
Packit Service |
991b93 |
check_wait_status(status);
|
|
Packit Service |
991b93 |
close(fd[0]);
|
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Packit Service |
991b93 |
} else {
|
|
Packit Service |
991b93 |
close(fd[0]);
|
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Packit Service |
991b93 |
client(fd[1], prio, proto, cipher, kx, mac, exp_desc);
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Packit Service |
991b93 |
close(fd[1]);
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Packit Service |
991b93 |
exit(0);
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Packit Service |
991b93 |
}
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Packit Service |
991b93 |
}
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Packit Service |
991b93 |
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Packit Service |
991b93 |
void doit(void)
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Packit Service |
991b93 |
{
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Packit Service |
991b93 |
signal(SIGPIPE, SIG_IGN);
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Packit Service |
991b93 |
|
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Packit Service |
991b93 |
run("dtls1.2-aes128-ecdhe", "NONE:+VERS-DTLS1.2:+COMP-NULL:+AES-128-GCM:+AEAD:+ECDHE-RSA:+SIGN-ALL:%COMPAT",
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Packit Service |
991b93 |
GNUTLS_DTLS1_2, GNUTLS_CIPHER_AES_128_GCM, GNUTLS_KX_ECDHE_RSA, GNUTLS_MAC_AEAD, "(DTLS1.2)-(ECDHE-RSA)-(AES-128-GCM)");
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Packit Service |
991b93 |
run("dtls1.2-aes256-ecdhe", "NONE:+VERS-DTLS1.2:+COMP-NULL:+AES-256-GCM:+AEAD:+ECDHE-RSA:+SIGN-ALL:%COMPAT",
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|
Packit Service |
991b93 |
GNUTLS_DTLS1_2, GNUTLS_CIPHER_AES_256_GCM, GNUTLS_KX_ECDHE_RSA, GNUTLS_MAC_AEAD, "(DTLS1.2)-(ECDHE-RSA)-(AES-256-GCM)");
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|
Packit Service |
991b93 |
run("dtls1.2-aes128-rsa", "NONE:+VERS-DTLS1.2:+COMP-NULL:+AES-128-GCM:+AEAD:+RSA:+SIGN-ALL:%COMPAT",
|
|
Packit Service |
991b93 |
GNUTLS_DTLS1_2, GNUTLS_CIPHER_AES_128_GCM, GNUTLS_KX_RSA, GNUTLS_MAC_AEAD, "(DTLS1.2)-(RSA)-(AES-128-GCM)");
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|
Packit Service |
991b93 |
run("dtls1.2-aes256-rsa", "NONE:+VERS-DTLS1.2:+COMP-NULL:+AES-256-GCM:+AEAD:+RSA:+SIGN-ALL:%COMPAT",
|
|
Packit Service |
991b93 |
GNUTLS_DTLS1_2, GNUTLS_CIPHER_AES_256_GCM, GNUTLS_KX_RSA, GNUTLS_MAC_AEAD, "(DTLS1.2)-(RSA)-(AES-256-GCM)");
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|
Packit Service |
991b93 |
}
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Packit Service |
991b93 |
|
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Packit Service |
991b93 |
#endif /* _WIN32 */
|