tests/x509dn.c

   1 /*
   2  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
   3  * Foundation, Inc.
   4  *
   5  * Author: Simon Josefsson
   6  *
   7  * This file is part of GNUTLS.
   8  *
   9  * GNUTLS is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * GNUTLS is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with GNUTLS; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 /* Parts copied from GnuTLS example programs. */
  25
  26 #ifdef HAVE_CONFIG_H
  27 # include <config.h>
  28 #endif
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <sys/types.h>
  34 #include <netinet/in.h>
  35 #include <sys/socket.h>
  36 #include <sys/wait.h>
  37 #include <arpa/inet.h>
  38 #include <unistd.h>
  39 #include <gnutls/gnutls.h>
  40
  41 #include "utils.h"
  42
  43 #include "ex-session-info.c"
  44 #include "ex-x509-info.c"
  45 #include "tcp.c"
  46
  47 pid_t child;
  48
  49 static void
  50 tls_log_func (int level, const char *str)
  51 {
  52   fprintf (stderr, "%s |<%d>| %s", child ? "server" : "client", level, str);
  53 }
  54
  55 /* A very basic TLS client, with anonymous authentication.
  56  */
  57
  58 #define MAX_BUF 1024
  59 #define MSG "Hello TLS"
  60
  61 static unsigned char ca_pem[] =
  62   "-----BEGIN CERTIFICATE-----\n"
  63   "MIIB5zCCAVKgAwIBAgIERiYdJzALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
  64   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTExWhcNMDgwNDE3MTMyOTExWjAZMRcw\n"
  65   "FQYDVQQDEw5HbnVUTFMgdGVzdCBDQTCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA\n"
  66   "vuyYeh1vfmslnuggeEKgZAVmQ5ltSdUY7H25WGSygKMUYZ0KT74v8C780qtcNt9T\n"
  67   "7EPH/N6RvB4BprdssgcQLsthR3XKA84jbjjxNCcaGs33lvOz8A1nf8p3hD+cKfRi\n"
  68   "kfYSW2JazLrtCC4yRCas/SPOUxu78of+3HiTfFm/oXUCAwEAAaNDMEEwDwYDVR0T\n"
  69   "AQH/BAUwAwEB/zAPBgNVHQ8BAf8EBQMDBwQAMB0GA1UdDgQWBBTpPBz7rZJu5gak\n"
  70   "Viyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAiaIRqGfp1jPpNeVhABK60SU0KIAy\n"
  71   "njuu7kHq5peUgYn8Jd9zNzExBOEp1VOipGsf6G66oQAhDFp2o8zkz7ZH71zR4HEW\n"
  72   "KoX6n5Emn6DvcEH/9pAhnGxNHJAoS7czTKv/JDZJhkqHxyrE1fuLsg5Qv25DTw7+\n"
  73   "PfqUpIhz5Bbm7J4=\n" "-----END CERTIFICATE-----\n";
  74 const gnutls_datum_t ca = { ca_pem, sizeof (ca_pem) };
  75
  76 static unsigned char cert_pem[] =
  77   "-----BEGIN CERTIFICATE-----\n"
  78   "MIICHjCCAYmgAwIBAgIERiYdNzALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
  79   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTI3WhcNMDgwNDE3MTMyOTI3WjAdMRsw\n"
  80   "GQYDVQQDExJHbnVUTFMgdGVzdCBjbGllbnQwgZwwCwYJKoZIhvcNAQEBA4GMADCB\n"
  81   "iAKBgLtmQ/Xyxde2jMzF3/WIO7HJS2oOoa0gUEAIgKFPXKPQ+GzP5jz37AR2ExeL\n"
  82   "ZIkiW8DdU3w77XwEu4C5KL6Om8aOoKUSy/VXHqLnu7czSZ/ju0quak1o/8kR4jKN\n"
  83   "zj2AC41179gAgY8oBAOgIo1hBAf6tjd9IQdJ0glhaZiQo1ipAgMBAAGjdjB0MAwG\n"
  84   "A1UdEwEB/wQCMAAwEwYDVR0lBAwwCgYIKwYBBQUHAwIwDwYDVR0PAQH/BAUDAweg\n"
  85   "ADAdBgNVHQ4EFgQUTLkKm/odNON+3svSBxX+odrLaJEwHwYDVR0jBBgwFoAU6Twc\n"
  86   "+62SbuYGpFYsouHAUyfI8pUwCwYJKoZIhvcNAQEFA4GBALujmBJVZnvaTXr9cFRJ\n"
  87   "jpfc/3X7sLUsMvumcDE01ls/cG5mIatmiyEU9qI3jbgUf82z23ON/acwJf875D3/\n"
  88   "U7jyOsBJ44SEQITbin2yUeJMIm1tievvdNXBDfW95AM507ShzP12sfiJkJfjjdhy\n"
  89   "dc8Siq5JojruiMizAf0pA7in\n" "-----END CERTIFICATE-----\n";
  90 const gnutls_datum_t cert = { cert_pem, sizeof (cert_pem) };
  91
  92 static unsigned char key_pem[] =
  93   "-----BEGIN RSA PRIVATE KEY-----\n"
  94   "MIICXAIBAAKBgQC7ZkP18sXXtozMxd/1iDuxyUtqDqGtIFBACIChT1yj0Phsz+Y8\n"
  95   "9+wEdhMXi2SJIlvA3VN8O+18BLuAuSi+jpvGjqClEsv1Vx6i57u3M0mf47tKrmpN\n"
  96   "aP/JEeIyjc49gAuNde/YAIGPKAQDoCKNYQQH+rY3fSEHSdIJYWmYkKNYqQIDAQAB\n"
  97   "AoGADpmARG5CQxS+AesNkGmpauepiCz1JBF/JwnyiX6vEzUh0Ypd39SZztwrDxvF\n"
  98   "PJjQaKVljml1zkJpIDVsqvHdyVdse8M+Qn6hw4x2p5rogdvhhIL1mdWo7jWeVJTF\n"
  99   "RKB7zLdMPs3ySdtcIQaF9nUAQ2KJEvldkO3m/bRJFEp54k0CQQDYy+RlTmwRD6hy\n"
 100   "7UtMjR0H3CSZJeQ8svMCxHLmOluG9H1UKk55ZBYfRTsXniqUkJBZ5wuV1L+pR9EK\n"
 101   "ca89a+1VAkEA3UmBelwEv2u9cAU1QjKjmwju1JgXbrjEohK+3B5y0ESEXPAwNQT9\n"
 102   "TrDM1m9AyxYTWLxX93dI5QwNFJtmbtjeBQJARSCWXhsoaDRG8QZrCSjBxfzTCqZD\n"
 103   "ZXtl807ymCipgJm60LiAt0JLr4LiucAsMZz6+j+quQbSakbFCACB8SLV1QJBAKZQ\n"
 104   "YKf+EPNtnmta/rRKKvySsi3GQZZN+Dt3q0r094XgeTsAqrqujVNfPhTMeP4qEVBX\n"
 105   "/iVX2cmMTSh3w3z8MaECQEp0XJWDVKOwcTW6Ajp9SowtmiZ3YDYo1LF9igb4iaLv\n"
 106   "sWZGfbnU3ryjvkb6YuFjgtzbZDZHWQCo8/cOtOBmPdk=\n"
 107   "-----END RSA PRIVATE KEY-----\n";
 108 const gnutls_datum_t key = { key_pem, sizeof (key_pem) };
 109
 110 #define EXPECT_RDN0 "GnuTLS test CA"
 111
 112 static int
 113 cert_callback (gnutls_session_t session,
 114                const gnutls_datum_t * req_ca_rdn, int nreqs,
 115                const gnutls_pk_algorithm_t * sign_algos,
 116                int sign_algos_length, gnutls_retr_st * st)
 117 {
 118   int result;
 119   gnutls_x509_dn_t dn;
 120
 121   if (nreqs != 1)
 122     {
 123       fail ("client: invoked to provide client cert, %d CA .\n", nreqs);
 124       return -1;
 125     }
 126
 127   success ("client: invoked to provide client cert.\n");
 128
 129   result = gnutls_x509_dn_init (&dn);
 130   if (result < 0)
 131     {
 132       fail ("client: could not initialize DN.\n");
 133       return -1;
 134     }
 135
 136   result = gnutls_x509_dn_import (dn, req_ca_rdn);
 137   if (result == 0)
 138     {
 139       gnutls_x509_ava_st val;
 140
 141       success ("client: imported DN.\n");
 142
 143       if (gnutls_x509_dn_get_rdn_ava (dn, 0, 0, &val) == 0)
 144         {
 145           success ("client: got RDN 0.\n");
 146
 147           if (val.value.size == strlen (EXPECT_RDN0)
 148               && strncmp (val.value.data, EXPECT_RDN0, val.value.size) == 0)
 149             {
 150               success ("client: RND 0 correct.\n");
 151             }
 152           else
 153             {
 154               fail ("client: RND 0 bad: %.*s\n",
 155                     val.value.size, val.value.data);
 156               return -1;
 157             }
 158         }
 159       else
 160         {
 161           fail ("client: could not retrieve RDN 0.\n");
 162           return -1;
 163         }
 164
 165       gnutls_x509_dn_deinit (dn);
 166     }
 167   else
 168     {
 169       fail ("client: failed to parse RDN: %s\n", gnutls_strerror (result));
 170     }
 171
 172   return 0;
 173 }
 174
 175
 176 static void
 177 client (void)
 178 {
 179   int ret, sd, ii;
 180   gnutls_session_t session;
 181   char buffer[MAX_BUF + 1];
 182   gnutls_certificate_credentials_t xcred;
 183
 184   gnutls_global_init ();
 185
 186   gnutls_global_set_log_function (tls_log_func);
 187   if (debug)
 188     gnutls_global_set_log_level (4711);
 189
 190   gnutls_certificate_allocate_credentials (&xcred);
 191
 192   /* sets the trusted cas file
 193    */
 194   gnutls_certificate_set_x509_trust_mem (xcred, &ca, GNUTLS_X509_FMT_PEM);
 195
 196   gnutls_certificate_client_set_retrieve_function (xcred, cert_callback);
 197
 198   /* Initialize TLS session
 199    */
 200   gnutls_init (&session, GNUTLS_CLIENT);
 201
 202   /* Use default priorities */
 203   gnutls_set_default_priority (session);
 204
 205   /* put the x509 credentials to the current session
 206    */
 207   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, xcred);
 208
 209   /* connect to the peer
 210    */
 211   sd = tcp_connect ();
 212
 213   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 214
 215   /* Perform the TLS handshake
 216    */
 217   ret = gnutls_handshake (session);
 218
 219   if (ret < 0)
 220     {
 221       fail ("client: Handshake failed\n");
 222       gnutls_perror (ret);
 223       goto end;
 224     }
 225   else
 226     {
 227       success ("client: Handshake was completed\n");
 228     }
 229
 230   success ("client: TLS version is: %s\n",
 231            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 232
 233   /* see the Getting peer's information example */
 234   print_info (session);
 235
 236   gnutls_record_send (session, MSG, strlen (MSG));
 237
 238   ret = gnutls_record_recv (session, buffer, MAX_BUF);
 239   if (ret == 0)
 240     {
 241       success ("client: Peer has closed the TLS connection\n");
 242       goto end;
 243     }
 244   else if (ret < 0)
 245     {
 246       fail ("client: Error: %s\n", gnutls_strerror (ret));
 247       goto end;
 248     }
 249
 250   printf ("- Received %d bytes: ", ret);
 251   for (ii = 0; ii < ret; ii++)
 252     {
 253       fputc (buffer[ii], stdout);
 254     }
 255   fputs ("\n", stdout);
 256
 257   gnutls_bye (session, GNUTLS_SHUT_RDWR);
 258
 259 end:
 260
 261   tcp_close (sd);
 262
 263   gnutls_deinit (session);
 264
 265   gnutls_certificate_free_credentials (xcred);
 266
 267   gnutls_global_deinit ();
 268 }
 269
 270 /* This is a sample TLS 1.0 echo server, using X.509 authentication.
 271  */
 272
 273 #define SA struct sockaddr
 274 #define MAX_BUF 1024
 275 #define PORT 5556               /* listen to 5556 port */
 276 #define DH_BITS 1024
 277
 278 /* These are global */
 279 gnutls_certificate_credentials_t x509_cred;
 280
 281 static gnutls_session_t
 282 initialize_tls_session (void)
 283 {
 284   gnutls_session_t session;
 285
 286   gnutls_init (&session, GNUTLS_SERVER);
 287
 288   /* avoid calling all the priority functions, since the defaults
 289    * are adequate.
 290    */
 291   gnutls_set_default_priority (session);
 292
 293   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 294
 295   /* request client certificate if any.
 296    */
 297   gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUEST);
 298
 299   gnutls_dh_set_prime_bits (session, DH_BITS);
 300
 301   return session;
 302 }
 303
 304 static gnutls_dh_params_t dh_params;
 305
 306 static int
 307 generate_dh_params (void)
 308 {
 309   const gnutls_datum_t p3 = { (char *) pkcs3, strlen (pkcs3) };
 310   /* Generate Diffie-Hellman parameters - for use with DHE
 311    * kx algorithms. These should be discarded and regenerated
 312    * once a day, once a week or once a month. Depending on the
 313    * security requirements.
 314    */
 315   gnutls_dh_params_init (&dh_params);
 316   return gnutls_dh_params_import_pkcs3 (dh_params, &p3, GNUTLS_X509_FMT_PEM);
 317 }
 318
 319 int err, listen_sd, i;
 320 int sd, ret;
 321 struct sockaddr_in sa_serv;
 322 struct sockaddr_in sa_cli;
 323 int client_len;
 324 char topbuf[512];
 325 gnutls_session_t session;
 326 char buffer[MAX_BUF + 1];
 327 int optval = 1;
 328
 329
 330 static unsigned char server_cert_pem[] =
 331   "-----BEGIN CERTIFICATE-----\n"
 332   "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
 333   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
 334   "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
 335   "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
 336   "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
 337   "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
 338   "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
 339   "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
 340   "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
 341   "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
 342   "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
 343   "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
 344   "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
 345
 346 const gnutls_datum_t server_cert = { server_cert_pem,
 347   sizeof (server_cert_pem)
 348 };
 349
 350 static unsigned char server_key_pem[] =
 351   "-----BEGIN RSA PRIVATE KEY-----\n"
 352   "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
 353   "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
 354   "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
 355   "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
 356   "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
 357   "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
 358   "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
 359   "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
 360   "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
 361   "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
 362   "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
 363   "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
 364   "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
 365   "-----END RSA PRIVATE KEY-----\n";
 366
 367 const gnutls_datum_t server_key = { server_key_pem,
 368   sizeof (server_key_pem)
 369 };
 370
 371 static void
 372 server_start (void)
 373 {
 374   /* Socket operations
 375    */
 376   listen_sd = socket (AF_INET, SOCK_STREAM, 0);
 377   if (err == -1)
 378     {
 379       perror ("socket");
 380       fail ("server: socket failed\n");
 381       return;
 382     }
 383
 384   memset (&sa_serv, '\0', sizeof (sa_serv));
 385   sa_serv.sin_family = AF_INET;
 386   sa_serv.sin_addr.s_addr = INADDR_ANY;
 387   sa_serv.sin_port = htons (PORT);      /* Server Port number */
 388
 389   setsockopt (listen_sd, SOL_SOCKET, SO_REUSEADDR, (void *) &optval,
 390               sizeof (int));
 391
 392   err = bind (listen_sd, (SA *) & sa_serv, sizeof (sa_serv));
 393   if (err == -1)
 394     {
 395       perror ("bind");
 396       fail ("server: bind failed\n");
 397       return;
 398     }
 399
 400   err = listen (listen_sd, 1024);
 401   if (err == -1)
 402     {
 403       perror ("listen");
 404       fail ("server: listen failed\n");
 405       return;
 406     }
 407
 408   success ("server: ready. Listening to port '%d'.\n", PORT);
 409 }
 410
 411 static void
 412 server (void)
 413 {
 414   /* this must be called once in the program
 415    */
 416   gnutls_global_init ();
 417
 418   gnutls_global_set_log_function (tls_log_func);
 419   if (debug)
 420     gnutls_global_set_log_level (4711);
 421
 422   gnutls_certificate_allocate_credentials (&x509_cred);
 423   gnutls_certificate_set_x509_trust_mem (x509_cred, &ca, GNUTLS_X509_FMT_PEM);
 424
 425   gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
 426                                        GNUTLS_X509_FMT_PEM);
 427
 428   success ("Launched, generating DH parameters...\n");
 429
 430   generate_dh_params ();
 431
 432   gnutls_certificate_set_dh_params (x509_cred, dh_params);
 433
 434   client_len = sizeof (sa_cli);
 435
 436   session = initialize_tls_session ();
 437
 438   sd = accept (listen_sd, (SA *) & sa_cli, &client_len);
 439
 440   success ("server: connection from %s, port %d\n",
 441            inet_ntop (AF_INET, &sa_cli.sin_addr, topbuf,
 442                       sizeof (topbuf)), ntohs (sa_cli.sin_port));
 443
 444   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 445   ret = gnutls_handshake (session);
 446   if (ret < 0)
 447     {
 448       close (sd);
 449       gnutls_deinit (session);
 450       fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
 451       return;
 452     }
 453   success ("server: Handshake was completed\n");
 454
 455   success ("server: TLS version is: %s\n",
 456            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 457
 458   /* see the Getting peer's information example */
 459   print_info (session);
 460
 461   i = 0;
 462   for (;;)
 463     {
 464       memset (buffer, 0, MAX_BUF + 1);
 465       ret = gnutls_record_recv (session, buffer, MAX_BUF);
 466
 467       if (ret == 0)
 468         {
 469           success ("server: Peer has closed the GNUTLS connection\n");
 470           break;
 471         }
 472       else if (ret < 0)
 473         {
 474           fail ("server: Received corrupted data(%d). Closing...\n", ret);
 475           break;
 476         }
 477       else if (ret > 0)
 478         {
 479           /* echo data back to the client
 480            */
 481           gnutls_record_send (session, buffer, strlen (buffer));
 482         }
 483     }
 484   /* do not wait for the peer to close the connection.
 485    */
 486   gnutls_bye (session, GNUTLS_SHUT_WR);
 487
 488   close (sd);
 489   gnutls_deinit (session);
 490
 491   close (listen_sd);
 492
 493   gnutls_certificate_free_credentials (x509_cred);
 494
 495   gnutls_dh_params_deinit (dh_params);
 496
 497   gnutls_global_deinit ();
 498
 499   success ("server: finished\n");
 500 }
 501
 502
 503 void
 504 doit (void)
 505 {
 506   server_start ();
 507   if (error_count)
 508     return;
 509
 510   child = fork ();
 511   if (child < 0)
 512     {
 513       perror ("fork");
 514       fail ("fork");
 515       return;
 516     }
 517
 518   if (child)
 519     {
 520       int status;
 521       /* parent */
 522       server ();
 523       wait (&status);
 524
 525 #if defined WIFEXITED && defined WEXITSTATUS
 526       if (WIFEXITED (status) && WEXITSTATUS (status))
 527         {
 528           fail ("server: client failed with exit status %d\n",
 529                 WEXITSTATUS (status));
 530         }
 531 #endif
 532
 533 #if defined WIFSIGNALED && defined WTERMSIG
 534       if (WIFSIGNALED (status))
 535         {
 536           fail ("server: client failed with fatal signal %d\n",
 537                 WTERMSIG (status));
 538         }
 539 #endif
 540
 541     }
 542   else
 543     client ();
 544 }