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/*
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* Copyright (C) 2018 Red Hat, Inc.
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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 <time.h>
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#include <gnutls/gnutls.h>
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#include <signal.h>
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#include <assert.h>
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#include "utils.h"
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#include "cert-common.h"
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#include "tls13/ext-parse.h"
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/* This program tests gnutls_ext_raw_parse with GNUTLS_EXT_RAW_FLAG_TLS_CLIENT_HELLO
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* flag.
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*/
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#define HOSTNAME "example.com"
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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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static unsigned found_server_name = 0;
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static unsigned found_status_req = 0;
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static unsigned bare_version = 0;
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static int ext_callback(void *ctx, unsigned tls_id, const unsigned char *data, unsigned size)
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{
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if (tls_id == 0) { /* server name */
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/* very interesting extension, 4 bytes of sizes
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* and 1 byte of type. */
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unsigned esize = (data[0] << 8) | data[1];
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assert(esize == strlen(HOSTNAME)+3);
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size -= 2;
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data += 2;
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assert(data[0] == 0);
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data++;
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size--;
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esize = (data[0] << 8) | data[1];
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assert(esize == strlen(HOSTNAME));
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data += 2;
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size -= 2;
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assert(memcmp(data, HOSTNAME, strlen(HOSTNAME)) == 0);
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found_server_name = 1;
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} else if (tls_id == 5) {
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found_status_req = 1;
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} else {
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if (debug)
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success("found extension: %u\n", tls_id);
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}
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return 0;
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}
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static int handshake_callback(gnutls_session_t session, unsigned int htype,
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unsigned post, unsigned int incoming, const gnutls_datum_t *msg)
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{
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int ret;
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if (htype == GNUTLS_HANDSHAKE_CLIENT_HELLO && post) {
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if (bare_version) {
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ret = gnutls_ext_raw_parse(NULL, ext_callback, msg, GNUTLS_EXT_RAW_FLAG_TLS_CLIENT_HELLO);
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} else {
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unsigned pos;
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gnutls_datum_t mmsg;
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assert(msg->size >= HANDSHAKE_SESSION_ID_POS);
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pos = HANDSHAKE_SESSION_ID_POS;
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SKIP8(pos, msg->size);
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SKIP16(pos, msg->size);
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SKIP8(pos, msg->size);
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mmsg.data = &msg->data[pos];
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mmsg.size = msg->size - pos;
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ret = gnutls_ext_raw_parse(NULL, ext_callback, &mmsg, 0);
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}
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assert(ret >= 0);
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}
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return 0;
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}
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static void client(int fd)
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{
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int ret;
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gnutls_certificate_credentials_t x509_cred;
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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(7);
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}
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gnutls_certificate_allocate_credentials(&x509_cred);
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/* Initialize TLS session
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*/
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gnutls_init(&session, GNUTLS_CLIENT);
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gnutls_handshake_set_timeout(session, 20 * 1000);
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/* Use default priorities */
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gnutls_priority_set_direct(session, "NORMAL:-VERS-ALL:+VERS-TLS1.2", NULL);
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gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
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gnutls_transport_set_int(session, fd);
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assert(gnutls_server_name_set(session, GNUTLS_NAME_DNS, HOSTNAME, strlen(HOSTNAME))>=0);
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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 == GNUTLS_E_UNSUPPORTED_SIGNATURE_ALGORITHM) {
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/* success */
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goto end;
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}
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if (ret < 0) {
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fail("client: Handshake failed: %s\n", gnutls_strerror(ret));
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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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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(x509_cred);
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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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gnutls_session_t session;
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gnutls_certificate_credentials_t x509_cred;
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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(&x509_cred);
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gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert,
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&server_key,
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GNUTLS_X509_FMT_PEM);
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gnutls_init(&session, GNUTLS_SERVER);
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gnutls_handshake_set_timeout(session, 20 * 1000);
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gnutls_handshake_set_hook_function(session, GNUTLS_HANDSHAKE_CLIENT_HELLO,
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GNUTLS_HOOK_POST,
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handshake_callback);
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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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gnutls_priority_set_direct(session, "NORMAL:-VERS-ALL:+VERS-TLS1.2", NULL);
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gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
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gnutls_transport_set_int(session, fd);
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do {
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ret = gnutls_handshake(session);
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} while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
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if (ret < 0) {
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/* failure is expected here */
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goto end;
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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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assert(found_server_name != 0);
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assert(found_status_req != 0);
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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(x509_cred);
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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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static void ch_handler(int sig)
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{
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return;
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}
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|
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static void start(unsigned val)
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{
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aea12f |
int fd[2];
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int ret, status = 0;
|
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pid_t child;
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signal(SIGCHLD, ch_handler);
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signal(SIGPIPE, SIG_IGN);
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aea12f |
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bare_version = val;
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aea12f |
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ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
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|
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if (ret < 0) {
|
|
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aea12f |
perror("socketpair");
|
|
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aea12f |
exit(1);
|
|
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aea12f |
}
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aea12f |
|
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aea12f |
child = fork();
|
|
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aea12f |
if (child < 0) {
|
|
Packit |
aea12f |
perror("fork");
|
|
Packit |
aea12f |
fail("fork");
|
|
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aea12f |
exit(1);
|
|
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aea12f |
}
|
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aea12f |
|
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aea12f |
if (child) {
|
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aea12f |
/* parent */
|
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aea12f |
close(fd[1]);
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aea12f |
server(fd[0]);
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aea12f |
waitpid(child, &status, 0);
|
|
Packit |
aea12f |
check_wait_status(status);
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aea12f |
} else {
|
|
Packit |
aea12f |
close(fd[0]);
|
|
Packit |
aea12f |
client(fd[1]);
|
|
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aea12f |
exit(0);
|
|
Packit |
aea12f |
}
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aea12f |
|
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aea12f |
return;
|
|
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aea12f |
}
|
|
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aea12f |
|
|
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aea12f |
void doit(void)
|
|
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aea12f |
{
|
|
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aea12f |
start(0);
|
|
Packit |
aea12f |
start(1);
|
|
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aea12f |
}
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aea12f |
|
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aea12f |
#endif /* _WIN32 */
|