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/*
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* Copyright (C) 2013 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 General Public License
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* along with GnuTLS; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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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) || !defined(ENABLE_ALPN)
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int main(int argc, char **argv)
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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 <gnutls/gnutls.h>
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#include <gnutls/dtls.h>
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#include "utils.h"
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static void terminate(void);
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/* This program tests whether the gnutls_record_get_state() works as
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* expected.
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*/
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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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/* These are global */
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static pid_t child;
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/* A very basic DTLS client, with anonymous authentication, that negotiates SRTP
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*/
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static void dump(const char *name, uint8_t *data, unsigned data_size)
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{
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unsigned i;
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fprintf(stderr, "%s", name);
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for (i=0;i
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fprintf(stderr, "%.2x", (unsigned)data[i]);
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fprintf(stderr, "\n");
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}
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static void terminate(void)
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{
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int status = 0;
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kill(child, SIGTERM);
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wait(&status);
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exit(1);
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}
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static void client(int fd)
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{
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gnutls_session_t session;
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int ret;
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gnutls_anon_client_credentials_t anoncred;
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gnutls_datum_t mac_key, iv, cipher_key;
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gnutls_datum_t read_mac_key, read_iv, read_cipher_key;
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unsigned char rseq_number[8];
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unsigned char wseq_number[8];
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unsigned char key_material[512], *p;
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unsigned i;
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unsigned block_size, hash_size, key_size, iv_size;
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const char *err;
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/* Need to enable anonymous KX specifically. */
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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_anon_allocate_client_credentials(&anoncred);
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/* Initialize TLS session
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*/
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gnutls_init(&session, GNUTLS_CLIENT);
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/* Use default priorities */
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ret = gnutls_priority_set_direct(session,
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"NONE:+VERS-TLS1.0:+AES-128-CBC:+SHA1:+SIGN-ALL:+COMP-NULL:+ANON-DH:+ANON-ECDH:+CURVE-ALL",
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&err;;
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if (ret < 0) {
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fail("client: priority set failed (%s): %s\n",
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gnutls_strerror(ret), err);
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exit(1);
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}
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/* put the anonymous credentials to the current session
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*/
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gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
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gnutls_transport_set_int(session, fd);
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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: %s\n", strerror(ret));
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terminate();
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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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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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ret = gnutls_cipher_get(session);
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if (ret != GNUTLS_CIPHER_AES_128_CBC) {
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fprintf(stderr, "negotiated unexpected cipher: %s\n", gnutls_cipher_get_name(ret));
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terminate();
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}
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ret = gnutls_mac_get(session);
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if (ret != GNUTLS_MAC_SHA1) {
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fprintf(stderr, "negotiated unexpected mac: %s\n", gnutls_mac_get_name(ret));
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terminate();
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}
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iv_size = 16;
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hash_size = 20;
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key_size = 16;
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block_size = 2*hash_size + 2*key_size + 2 *iv_size;
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ret = gnutls_prf(session, 13, "key expansion", 1, 0, NULL, block_size,
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(void*)key_material);
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if (ret < 0) {
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fprintf(stderr, "error in %d\n", __LINE__);
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gnutls_perror(ret);
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terminate();
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}
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p = key_material;
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/* check whether the key material matches our calculations */
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ret = gnutls_record_get_state(session, 0, &mac_key, &iv, &cipher_key, wseq_number);
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if (ret < 0) {
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fprintf(stderr, "error in %d\n", __LINE__);
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gnutls_perror(ret);
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terminate();
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}
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if (memcmp(wseq_number, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) != 0) {
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dump("wseq:", wseq_number, 8);
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fprintf(stderr, "error in %d\n", __LINE__);
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terminate();
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}
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ret = gnutls_record_get_state(session, 1, &read_mac_key, &read_iv, &read_cipher_key, rseq_number);
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if (ret < 0) {
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fprintf(stderr, "error in %d\n", __LINE__);
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gnutls_perror(ret);
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terminate();
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}
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if (memcmp(rseq_number, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) != 0) {
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dump("rseq:", rseq_number, 8);
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fprintf(stderr, "error in %d\n", __LINE__);
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terminate();
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}
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if (hash_size != mac_key.size || memcmp(p, mac_key.data, hash_size) != 0) {
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dump("MAC:", mac_key.data, mac_key.size);
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dump("Block:", key_material, block_size);
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fprintf(stderr, "error in %d\n", __LINE__);
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terminate();
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}
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p+= hash_size;
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if (hash_size != read_mac_key.size || memcmp(p, read_mac_key.data, hash_size) != 0) {
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dump("MAC:", read_mac_key.data, read_mac_key.size);
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dump("Block:", key_material, block_size);
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fprintf(stderr, "error in %d\n", __LINE__);
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terminate();
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}
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p+= hash_size;
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if (key_size != cipher_key.size || memcmp(p, cipher_key.data, key_size) != 0) {
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fprintf(stderr, "error in %d\n", __LINE__);
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terminate();
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}
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p+= key_size;
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if (key_size != read_cipher_key.size || memcmp(p, read_cipher_key.data, key_size) != 0) {
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fprintf(stderr, "error in %d\n", __LINE__);
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terminate();
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}
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p+= key_size;
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if (iv_size != iv.size || memcmp(p, iv.data, iv_size) != 0) {
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fprintf(stderr, "error in %d\n", __LINE__);
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terminate();
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}
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p+=iv_size;
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if (iv_size != read_iv.size || memcmp(p, read_iv.data, iv_size) != 0) {
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fprintf(stderr, "error in %d\n", __LINE__);
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terminate();
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}
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/* check sequence numbers */
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for (i=0;i<5;i++) {
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ret = gnutls_record_send(session, "hello", 5);
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if (ret < 0) {
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fail("gnutls_record_send: %s\n", gnutls_strerror(ret));
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}
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}
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ret = gnutls_record_get_state(session, 0, NULL, NULL, NULL, wseq_number);
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if (ret < 0) {
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fprintf(stderr, "error in %d\n", __LINE__);
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gnutls_perror(ret);
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terminate();
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}
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if (memcmp(wseq_number, "\x00\x00\x00\x00\x00\x00\x00\x06", 8) != 0) {
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dump("wseq:", wseq_number, 8);
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fprintf(stderr, "error in %d\n", __LINE__);
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terminate();
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}
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ret = gnutls_record_get_state(session, 1, NULL, NULL, NULL, rseq_number);
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if (ret < 0) {
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fprintf(stderr, "error in %d\n", __LINE__);
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gnutls_perror(ret);
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terminate();
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}
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if (memcmp(rseq_number, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) != 0) {
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dump("wseq:", wseq_number, 8);
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fprintf(stderr, "error in %d\n", __LINE__);
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terminate();
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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_anon_free_client_credentials(anoncred);
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gnutls_global_deinit();
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}
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static void server(int fd)
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{
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int ret;
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549fdc |
gnutls_session_t session;
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gnutls_anon_server_credentials_t anoncred;
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549fdc |
gnutls_dh_params_t dh_params;
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char buf[128];
|
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const gnutls_datum_t p3 =
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{ (unsigned char *) pkcs3, strlen(pkcs3) };
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549fdc |
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549fdc |
/* this must be called once in the program
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*/
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549fdc |
global_init();
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549fdc |
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Packit |
549fdc |
if (debug) {
|
|
Packit |
549fdc |
gnutls_global_set_log_function(server_log_func);
|
|
Packit |
549fdc |
gnutls_global_set_log_level(4711);
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
gnutls_anon_allocate_server_credentials(&anoncred);
|
|
Packit |
549fdc |
gnutls_dh_params_init(&dh_params);
|
|
Packit |
549fdc |
gnutls_dh_params_import_pkcs3(dh_params, &p3, GNUTLS_X509_FMT_PEM);
|
|
Packit |
549fdc |
gnutls_anon_set_server_dh_params(anoncred, dh_params);
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
gnutls_init(&session, GNUTLS_SERVER);
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
/* avoid calling all the priority functions, since the defaults
|
|
Packit |
549fdc |
* are adequate.
|
|
Packit |
549fdc |
*/
|
|
Packit |
549fdc |
ret = gnutls_priority_set_direct(session,
|
|
Packit |
549fdc |
"NORMAL:+ANON-DH:+ANON-ECDH", NULL);
|
|
Packit |
549fdc |
if (ret < 0) {
|
|
Packit |
549fdc |
fail("server: priority set failed (%s)\n\n",
|
|
Packit |
549fdc |
gnutls_strerror(ret));
|
|
Packit |
549fdc |
terminate();
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
gnutls_transport_set_int(session, fd);
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
do {
|
|
Packit |
549fdc |
ret = gnutls_handshake(session);
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
|
|
Packit |
549fdc |
if (ret < 0) {
|
|
Packit |
549fdc |
close(fd);
|
|
Packit |
549fdc |
gnutls_deinit(session);
|
|
Packit |
549fdc |
fail("server: Handshake has failed (%s)\n\n",
|
|
Packit |
549fdc |
gnutls_strerror(ret));
|
|
Packit |
549fdc |
terminate();
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
if (debug)
|
|
Packit |
549fdc |
success("server: Handshake was completed\n");
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
if (debug)
|
|
Packit |
549fdc |
success("server: TLS version is: %s\n",
|
|
Packit |
549fdc |
gnutls_protocol_get_name
|
|
Packit |
549fdc |
(gnutls_protocol_get_version(session)));
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
do {
|
|
Packit |
549fdc |
ret = gnutls_record_recv(session, buf, sizeof(buf));
|
|
Packit |
549fdc |
} while(ret > 0);
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
if (ret < 0) {
|
|
Packit |
549fdc |
fail("error: %s\n", gnutls_strerror(ret));
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
/* do not wait for the peer to close the connection.
|
|
Packit |
549fdc |
*/
|
|
Packit |
549fdc |
gnutls_bye(session, GNUTLS_SHUT_WR);
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
close(fd);
|
|
Packit |
549fdc |
gnutls_deinit(session);
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
gnutls_anon_free_server_credentials(anoncred);
|
|
Packit |
549fdc |
gnutls_dh_params_deinit(dh_params);
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
gnutls_global_deinit();
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
if (debug)
|
|
Packit |
549fdc |
success("server: finished\n");
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
static void start(void)
|
|
Packit |
549fdc |
{
|
|
Packit |
549fdc |
int fd[2];
|
|
Packit |
549fdc |
int ret;
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
|
|
Packit |
549fdc |
if (ret < 0) {
|
|
Packit |
549fdc |
perror("socketpair");
|
|
Packit |
549fdc |
exit(1);
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
child = fork();
|
|
Packit |
549fdc |
if (child < 0) {
|
|
Packit |
549fdc |
perror("fork");
|
|
Packit |
549fdc |
fail("fork");
|
|
Packit |
549fdc |
exit(1);
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
if (child) {
|
|
Packit |
549fdc |
int status;
|
|
Packit |
549fdc |
/* parent */
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
server(fd[0]);
|
|
Packit |
549fdc |
wait(&status);
|
|
Packit |
549fdc |
check_wait_status(status);
|
|
Packit |
549fdc |
} else {
|
|
Packit |
549fdc |
close(fd[0]);
|
|
Packit |
549fdc |
client(fd[1]);
|
|
Packit |
549fdc |
exit(0);
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
void doit(void)
|
|
Packit |
549fdc |
{
|
|
Packit |
549fdc |
start();
|
|
Packit |
549fdc |
}
|
|
Packit |
549fdc |
|
|
Packit |
549fdc |
#endif /* _WIN32 */
|