tests/x509dn.c

   1 /*
   2  * Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation
   3  *
   4  * Author: Simon Josefsson
   5  *
   6  * This file is part of GNUTLS.
   7  *
   8  * GNUTLS is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * GNUTLS is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with GNUTLS; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 /* Parts copied from GnuTLS example programs. */
  24
  25 #if HAVE_CONFIG_H
  26 # include <config.h>
  27 #endif
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <sys/types.h>
  33 #include <netinet/in.h>
  34 #include <sys/socket.h>
  35 #include <sys/wait.h>
  36 #include <arpa/inet.h>
  37 #include <unistd.h>
  38 #include <gnutls/gnutls.h>
  39
  40 #include "utils.h"
  41
  42 #include "ex-session-info.c"
  43 #include "ex-x509-info.c"
  44
  45 pid_t child;
  46
  47 static void
  48 tls_log_func (int level, const char *str)
  49 {
  50   fprintf (stderr, "%s |<%d>| %s", child ? "server" : "client", level, str);
  51 }
  52
  53 /* A very basic TLS client, with anonymous authentication.
  54  */
  55
  56 #define MAX_BUF 1024
  57 #define MSG "Hello TLS"
  58
  59 /* Connects to the peer and returns a socket
  60  * descriptor.
  61  */
  62 int
  63 tcp_connect (void)
  64 {
  65   const char *PORT = "5556";
  66   const char *SERVER = "127.0.0.1";
  67   int err, sd;
  68   struct sockaddr_in sa;
  69
  70   /* connects to server
  71    */
  72   sd = socket (AF_INET, SOCK_STREAM, 0);
  73
  74   memset (&sa, '\0', sizeof (sa));
  75   sa.sin_family = AF_INET;
  76   sa.sin_port = htons (atoi (PORT));
  77   inet_pton (AF_INET, SERVER, &sa.sin_addr);
  78
  79   err = connect (sd, (struct sockaddr *) &sa, sizeof (sa));
  80   if (err < 0)
  81     {
  82       fprintf (stderr, "Connect error\n");
  83       exit (1);
  84     }
  85
  86   return sd;
  87 }
  88
  89 /* closes the given socket descriptor.
  90  */
  91 void
  92 tcp_close (int sd)
  93 {
  94   shutdown (sd, SHUT_RDWR);     /* no more receptions */
  95   close (sd);
  96 }
  97
  98 const char ca_pem[] =
  99   "-----BEGIN CERTIFICATE-----\n"
 100   "MIIB5zCCAVKgAwIBAgIERiYdJzALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
 101   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTExWhcNMDgwNDE3MTMyOTExWjAZMRcw\n"
 102   "FQYDVQQDEw5HbnVUTFMgdGVzdCBDQTCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA\n"
 103   "vuyYeh1vfmslnuggeEKgZAVmQ5ltSdUY7H25WGSygKMUYZ0KT74v8C780qtcNt9T\n"
 104   "7EPH/N6RvB4BprdssgcQLsthR3XKA84jbjjxNCcaGs33lvOz8A1nf8p3hD+cKfRi\n"
 105   "kfYSW2JazLrtCC4yRCas/SPOUxu78of+3HiTfFm/oXUCAwEAAaNDMEEwDwYDVR0T\n"
 106   "AQH/BAUwAwEB/zAPBgNVHQ8BAf8EBQMDBwQAMB0GA1UdDgQWBBTpPBz7rZJu5gak\n"
 107   "Viyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAiaIRqGfp1jPpNeVhABK60SU0KIAy\n"
 108   "njuu7kHq5peUgYn8Jd9zNzExBOEp1VOipGsf6G66oQAhDFp2o8zkz7ZH71zR4HEW\n"
 109   "KoX6n5Emn6DvcEH/9pAhnGxNHJAoS7czTKv/JDZJhkqHxyrE1fuLsg5Qv25DTw7+\n"
 110   "PfqUpIhz5Bbm7J4=\n"
 111   "-----END CERTIFICATE-----\n";
 112 const gnutls_datum_t ca = { ca_pem, sizeof (ca_pem) };
 113
 114 const char cert_pem[] =
 115   "-----BEGIN CERTIFICATE-----\n"
 116   "MIICHjCCAYmgAwIBAgIERiYdNzALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
 117   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTI3WhcNMDgwNDE3MTMyOTI3WjAdMRsw\n"
 118   "GQYDVQQDExJHbnVUTFMgdGVzdCBjbGllbnQwgZwwCwYJKoZIhvcNAQEBA4GMADCB\n"
 119   "iAKBgLtmQ/Xyxde2jMzF3/WIO7HJS2oOoa0gUEAIgKFPXKPQ+GzP5jz37AR2ExeL\n"
 120   "ZIkiW8DdU3w77XwEu4C5KL6Om8aOoKUSy/VXHqLnu7czSZ/ju0quak1o/8kR4jKN\n"
 121   "zj2AC41179gAgY8oBAOgIo1hBAf6tjd9IQdJ0glhaZiQo1ipAgMBAAGjdjB0MAwG\n"
 122   "A1UdEwEB/wQCMAAwEwYDVR0lBAwwCgYIKwYBBQUHAwIwDwYDVR0PAQH/BAUDAweg\n"
 123   "ADAdBgNVHQ4EFgQUTLkKm/odNON+3svSBxX+odrLaJEwHwYDVR0jBBgwFoAU6Twc\n"
 124   "+62SbuYGpFYsouHAUyfI8pUwCwYJKoZIhvcNAQEFA4GBALujmBJVZnvaTXr9cFRJ\n"
 125   "jpfc/3X7sLUsMvumcDE01ls/cG5mIatmiyEU9qI3jbgUf82z23ON/acwJf875D3/\n"
 126   "U7jyOsBJ44SEQITbin2yUeJMIm1tievvdNXBDfW95AM507ShzP12sfiJkJfjjdhy\n"
 127   "dc8Siq5JojruiMizAf0pA7in\n"
 128   "-----END CERTIFICATE-----\n";
 129 const gnutls_datum_t cert = { cert_pem, sizeof (cert_pem) };
 130
 131 const char key_pem[] =
 132   "-----BEGIN RSA PRIVATE KEY-----\n"
 133   "MIICXAIBAAKBgQC7ZkP18sXXtozMxd/1iDuxyUtqDqGtIFBACIChT1yj0Phsz+Y8\n"
 134   "9+wEdhMXi2SJIlvA3VN8O+18BLuAuSi+jpvGjqClEsv1Vx6i57u3M0mf47tKrmpN\n"
 135   "aP/JEeIyjc49gAuNde/YAIGPKAQDoCKNYQQH+rY3fSEHSdIJYWmYkKNYqQIDAQAB\n"
 136   "AoGADpmARG5CQxS+AesNkGmpauepiCz1JBF/JwnyiX6vEzUh0Ypd39SZztwrDxvF\n"
 137   "PJjQaKVljml1zkJpIDVsqvHdyVdse8M+Qn6hw4x2p5rogdvhhIL1mdWo7jWeVJTF\n"
 138   "RKB7zLdMPs3ySdtcIQaF9nUAQ2KJEvldkO3m/bRJFEp54k0CQQDYy+RlTmwRD6hy\n"
 139   "7UtMjR0H3CSZJeQ8svMCxHLmOluG9H1UKk55ZBYfRTsXniqUkJBZ5wuV1L+pR9EK\n"
 140   "ca89a+1VAkEA3UmBelwEv2u9cAU1QjKjmwju1JgXbrjEohK+3B5y0ESEXPAwNQT9\n"
 141   "TrDM1m9AyxYTWLxX93dI5QwNFJtmbtjeBQJARSCWXhsoaDRG8QZrCSjBxfzTCqZD\n"
 142   "ZXtl807ymCipgJm60LiAt0JLr4LiucAsMZz6+j+quQbSakbFCACB8SLV1QJBAKZQ\n"
 143   "YKf+EPNtnmta/rRKKvySsi3GQZZN+Dt3q0r094XgeTsAqrqujVNfPhTMeP4qEVBX\n"
 144   "/iVX2cmMTSh3w3z8MaECQEp0XJWDVKOwcTW6Ajp9SowtmiZ3YDYo1LF9igb4iaLv\n"
 145   "sWZGfbnU3ryjvkb6YuFjgtzbZDZHWQCo8/cOtOBmPdk=\n"
 146   "-----END RSA PRIVATE KEY-----\n";
 147 const gnutls_datum_t key = { key_pem, sizeof (key_pem) };
 148
 149 #define EXPECT_RDN0 "GnuTLS test CA"
 150
 151 static int
 152 cert_callback (gnutls_session session,
 153                const gnutls_datum *req_ca_rdn, int nreqs,
 154                const gnutls_pk_algorithm *sign_algos,
 155                int sign_algos_length, gnutls_retr_st *st)
 156 {
 157   int result;
 158   gnutls_x509_dn_t dn;
 159
 160   if (nreqs != 1)
 161     {
 162       fail ("client: invoked to provide client cert, %d CA .\n", nreqs);
 163       return -1;
 164     }
 165
 166   success ("client: invoked to provide client cert.\n");
 167
 168   result = gnutls_x509_dn_init( &dn);
 169   if (result < 0)
 170     {
 171       fail ("client: could not initialize DN.\n");
 172       return -1;
 173     }
 174
 175   result = gnutls_x509_dn_import (dn, req_ca_rdn);
 176   if (result == 0)
 177     {
 178       gnutls_x509_ava_st val;
 179
 180       success ("client: imported DN.\n");
 181
 182       if (gnutls_x509_dn_get_rdn_ava (dn, 0, 0, &val) == 0)
 183         {
 184           success ("client: got RDN 0.\n");
 185
 186           if (val.value.size == strlen(EXPECT_RDN0)
 187               && strncmp(val.value.data, EXPECT_RDN0, val.value.size) == 0)
 188             {
 189               success ("client: RND 0 correct.\n");
 190             }
 191           else
 192             {
 193               fail ("client: RND 0 bad: %.*s\n",
 194                     val.value.size, val.value.data);
 195               return -1;
 196             }
 197         }
 198       else
 199         {
 200           fail ("client: could not retrieve RDN 0.\n");
 201           return -1;
 202         }
 203
 204       gnutls_x509_dn_deinit (dn);
 205     }
 206   else
 207     {
 208       fail ("client: failed to parse RDN: %s\n", gnutls_strerror (result));
 209     }
 210
 211   return 0;
 212 }
 213
 214
 215 void
 216 client (void)
 217 {
 218   int ret, sd, ii;
 219   gnutls_session_t session;
 220   char buffer[MAX_BUF + 1];
 221   gnutls_certificate_credentials_t xcred;
 222
 223   gnutls_global_init ();
 224
 225   gnutls_global_set_log_function (tls_log_func);
 226   gnutls_global_set_log_level (4711);
 227
 228   gnutls_certificate_allocate_credentials (&xcred);
 229
 230   /* sets the trusted cas file
 231    */
 232   gnutls_certificate_set_x509_trust_mem (xcred, &ca, GNUTLS_X509_FMT_PEM);
 233
 234   gnutls_certificate_client_set_retrieve_function (xcred, cert_callback);
 235
 236   /* Initialize TLS session
 237    */
 238   gnutls_init (&session, GNUTLS_CLIENT);
 239
 240   /* Use default priorities */
 241   gnutls_set_default_priority (session);
 242
 243   /* put the x509 credentials to the current session
 244    */
 245   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, xcred);
 246
 247   /* connect to the peer
 248    */
 249   sd = tcp_connect ();
 250
 251   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 252
 253   /* Perform the TLS handshake
 254    */
 255   ret = gnutls_handshake (session);
 256
 257   if (ret < 0)
 258     {
 259       fail ("client: Handshake failed\n");
 260       gnutls_perror (ret);
 261       goto end;
 262     }
 263   else
 264     {
 265       success ("client: Handshake was completed\n");
 266     }
 267
 268   success ("client: TLS version is: %s\n",
 269            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 270
 271   /* see the Getting peer's information example */
 272   print_info(session);
 273
 274   gnutls_record_send (session, MSG, strlen (MSG));
 275
 276   ret = gnutls_record_recv (session, buffer, MAX_BUF);
 277   if (ret == 0)
 278     {
 279       success ("client: Peer has closed the TLS connection\n");
 280       goto end;
 281     }
 282   else if (ret < 0)
 283     {
 284       fail ("client: Error: %s\n", gnutls_strerror (ret));
 285       goto end;
 286     }
 287
 288   printf ("- Received %d bytes: ", ret);
 289   for (ii = 0; ii < ret; ii++)
 290     {
 291       fputc (buffer[ii], stdout);
 292     }
 293   fputs ("\n", stdout);
 294
 295   gnutls_bye (session, GNUTLS_SHUT_RDWR);
 296
 297 end:
 298
 299   tcp_close (sd);
 300
 301   gnutls_deinit (session);
 302
 303   gnutls_certificate_free_credentials (xcred);
 304
 305   gnutls_global_deinit ();
 306 }
 307
 308 /* This is a sample TLS 1.0 echo server, using X.509 authentication.
 309  */
 310
 311 #define SA struct sockaddr
 312 #define MAX_BUF 1024
 313 #define PORT 5556               /* listen to 5556 port */
 314 #define DH_BITS 1024
 315
 316 /* These are global */
 317 gnutls_certificate_credentials_t x509_cred;
 318
 319 gnutls_session_t
 320 initialize_tls_session (void)
 321 {
 322   gnutls_session_t session;
 323
 324   gnutls_init (&session, GNUTLS_SERVER);
 325
 326   /* avoid calling all the priority functions, since the defaults
 327    * are adequate.
 328    */
 329   gnutls_set_default_priority (session);
 330
 331   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 332
 333   /* request client certificate if any.
 334    */
 335   gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUEST);
 336
 337   gnutls_dh_set_prime_bits (session, DH_BITS);
 338
 339   return session;
 340 }
 341
 342 static gnutls_dh_params_t dh_params;
 343
 344 static int
 345 generate_dh_params (void)
 346 {
 347   const gnutls_datum_t p3 = { pkcs3, strlen (pkcs3) };
 348   /* Generate Diffie Hellman parameters - for use with DHE
 349    * kx algorithms. These should be discarded and regenerated
 350    * once a day, once a week or once a month. Depending on the
 351    * security requirements.
 352    */
 353   gnutls_dh_params_init (&dh_params);
 354   return gnutls_dh_params_import_pkcs3 (dh_params, &p3, GNUTLS_X509_FMT_PEM);
 355 }
 356
 357 int err, listen_sd, i;
 358 int sd, ret;
 359 struct sockaddr_in sa_serv;
 360 struct sockaddr_in sa_cli;
 361 int client_len;
 362 char topbuf[512];
 363 gnutls_session_t session;
 364 char buffer[MAX_BUF + 1];
 365 int optval = 1;
 366
 367
 368 const char server_cert_pem[] =
 369   "-----BEGIN CERTIFICATE-----\n"
 370   "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
 371   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
 372   "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
 373   "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
 374   "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
 375   "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
 376   "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
 377   "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
 378   "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
 379   "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
 380   "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
 381   "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
 382   "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n"
 383   "-----END CERTIFICATE-----\n";
 384
 385 const gnutls_datum_t server_cert = { server_cert_pem,
 386                                      sizeof (server_cert_pem) };
 387
 388 const char server_key_pem[] =
 389   "-----BEGIN RSA PRIVATE KEY-----\n"
 390   "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
 391   "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
 392   "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
 393   "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
 394   "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
 395   "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
 396   "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
 397   "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
 398   "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
 399   "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
 400   "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
 401   "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
 402   "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
 403   "-----END RSA PRIVATE KEY-----\n";
 404
 405 const gnutls_datum_t server_key = { server_key_pem,
 406                                     sizeof (server_key_pem) };
 407
 408 void
 409 server_start (void)
 410 {
 411   /* this must be called once in the program
 412    */
 413   gnutls_global_init ();
 414
 415   gnutls_global_set_log_function (tls_log_func);
 416   gnutls_global_set_log_level (4711);
 417
 418   gnutls_certificate_allocate_credentials (&x509_cred);
 419   gnutls_certificate_set_x509_trust_mem (x509_cred, &ca, GNUTLS_X509_FMT_PEM);
 420
 421   gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
 422                                        GNUTLS_X509_FMT_PEM);
 423
 424   success ("Launched, generating DH parameters...\n");
 425
 426   generate_dh_params ();
 427
 428   gnutls_certificate_set_dh_params (x509_cred, dh_params);
 429
 430   /* Socket operations
 431    */
 432   listen_sd = socket (AF_INET, SOCK_STREAM, 0);
 433   if (err == -1)
 434     {
 435       perror ("socket");
 436       fail ("server: socket failed\n");
 437       return;
 438     }
 439
 440   memset (&sa_serv, '\0', sizeof (sa_serv));
 441   sa_serv.sin_family = AF_INET;
 442   sa_serv.sin_addr.s_addr = INADDR_ANY;
 443   sa_serv.sin_port = htons (PORT);      /* Server Port number */
 444
 445   setsockopt (listen_sd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof (int));
 446
 447   err = bind (listen_sd, (SA *) & sa_serv, sizeof (sa_serv));
 448   if (err == -1)
 449     {
 450       perror ("bind");
 451       fail ("server: bind failed\n");
 452       return;
 453     }
 454
 455   err = listen (listen_sd, 1024);
 456   if (err == -1)
 457     {
 458       perror ("listen");
 459       fail ("server: listen failed\n");
 460       return;
 461     }
 462
 463   success ("server: ready. Listening to port '%d'.\n", PORT);
 464 }
 465
 466 void
 467 server (void)
 468 {
 469   client_len = sizeof (sa_cli);
 470
 471   session = initialize_tls_session ();
 472
 473   sd = accept (listen_sd, (SA *) & sa_cli, &client_len);
 474
 475   success ("server: connection from %s, port %d\n",
 476            inet_ntop (AF_INET, &sa_cli.sin_addr, topbuf,
 477                       sizeof (topbuf)), ntohs (sa_cli.sin_port));
 478
 479   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 480   ret = gnutls_handshake (session);
 481   if (ret < 0)
 482     {
 483       close (sd);
 484       gnutls_deinit (session);
 485       fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
 486       return;
 487     }
 488   success ("server: Handshake was completed\n");
 489
 490   success ("server: TLS version is: %s\n",
 491            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 492
 493   /* see the Getting peer's information example */
 494   print_info(session);
 495
 496   i = 0;
 497   for (;;)
 498     {
 499       bzero (buffer, MAX_BUF + 1);
 500       ret = gnutls_record_recv (session, buffer, MAX_BUF);
 501
 502       if (ret == 0)
 503         {
 504           success ("server: Peer has closed the GNUTLS connection\n");
 505           break;
 506         }
 507       else if (ret < 0)
 508         {
 509           fail ("server: Received corrupted data(%d). Closing...\n", ret);
 510           break;
 511         }
 512       else if (ret > 0)
 513         {
 514           /* echo data back to the client
 515            */
 516           gnutls_record_send (session, buffer, strlen (buffer));
 517         }
 518     }
 519   /* do not wait for the peer to close the connection.
 520    */
 521   gnutls_bye (session, GNUTLS_SHUT_WR);
 522
 523   close (sd);
 524   gnutls_deinit (session);
 525
 526   close (listen_sd);
 527
 528   gnutls_certificate_free_credentials (x509_cred);
 529
 530   gnutls_global_deinit ();
 531
 532   success ("server: finished\n");
 533 }
 534
 535
 536 void
 537 doit (void)
 538 {
 539   server_start ();
 540   if (error_count)
 541     return;
 542
 543   child = fork ();
 544   if (child < 0)
 545     {
 546       perror ("fork");
 547       fail ("fork");
 548       return;
 549     }
 550
 551   if (child)
 552     {
 553       int status;
 554       /* parent */
 555       server ();
 556       wait (&status);
 557
 558 #if defined(WIFEXITED) && defined(WEXITSTATUS)
 559       if (WIFEXITED (status) && WEXITSTATUS (status))
 560         {
 561           fail ("server: client failed with exit status %d\n", WEXITSTATUS (status));
 562         }
 563 #endif
 564 #if defined(WIFSIGNALED) && defined(WTERMSIG)
 565       if (WIFSIGNALED (status))
 566         {
 567           fail ("server: client failed with fatal signal %d\n", WTERMSIG (status));
 568         }
 569 #endif
 570
 571     }
 572   else
 573     client ();
 574 }