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 #if !defined(_WIN32)
  35 #include <netinet/in.h>
  36 #include <sys/socket.h>
  37 #include <sys/wait.h>
  38 #include <arpa/inet.h>
  39 #endif
  40 #include <unistd.h>
  41 #include <gnutls/gnutls.h>
  42
  43 #include "utils.h"
  44
  45 #include "ex-session-info.c"
  46 #include "ex-x509-info.c"
  47 #include "tcp.c"
  48
  49 pid_t child;
  50
  51 static void
  52 tls_log_func (int level, const char *str)
  53 {
  54   fprintf (stderr, "%s |<%d>| %s", child ? "server" : "client", level, str);
  55 }
  56
  57 /* A very basic TLS client, with anonymous authentication.
  58  */
  59
  60 #define MAX_BUF 1024
  61 #define MSG "Hello TLS"
  62
  63 static unsigned char ca_pem[] =
  64   "-----BEGIN CERTIFICATE-----\n"
  65   "MIIB5zCCAVKgAwIBAgIERiYdJzALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
  66   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTExWhcNMDgwNDE3MTMyOTExWjAZMRcw\n"
  67   "FQYDVQQDEw5HbnVUTFMgdGVzdCBDQTCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA\n"
  68   "vuyYeh1vfmslnuggeEKgZAVmQ5ltSdUY7H25WGSygKMUYZ0KT74v8C780qtcNt9T\n"
  69   "7EPH/N6RvB4BprdssgcQLsthR3XKA84jbjjxNCcaGs33lvOz8A1nf8p3hD+cKfRi\n"
  70   "kfYSW2JazLrtCC4yRCas/SPOUxu78of+3HiTfFm/oXUCAwEAAaNDMEEwDwYDVR0T\n"
  71   "AQH/BAUwAwEB/zAPBgNVHQ8BAf8EBQMDBwQAMB0GA1UdDgQWBBTpPBz7rZJu5gak\n"
  72   "Viyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAiaIRqGfp1jPpNeVhABK60SU0KIAy\n"
  73   "njuu7kHq5peUgYn8Jd9zNzExBOEp1VOipGsf6G66oQAhDFp2o8zkz7ZH71zR4HEW\n"
  74   "KoX6n5Emn6DvcEH/9pAhnGxNHJAoS7czTKv/JDZJhkqHxyrE1fuLsg5Qv25DTw7+\n"
  75   "PfqUpIhz5Bbm7J4=\n" "-----END CERTIFICATE-----\n";
  76 const gnutls_datum_t ca = { ca_pem, sizeof (ca_pem) };
  77
  78 static unsigned char cert_pem[] =
  79   "-----BEGIN CERTIFICATE-----\n"
  80   "MIICHjCCAYmgAwIBAgIERiYdNzALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
  81   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTI3WhcNMDgwNDE3MTMyOTI3WjAdMRsw\n"
  82   "GQYDVQQDExJHbnVUTFMgdGVzdCBjbGllbnQwgZwwCwYJKoZIhvcNAQEBA4GMADCB\n"
  83   "iAKBgLtmQ/Xyxde2jMzF3/WIO7HJS2oOoa0gUEAIgKFPXKPQ+GzP5jz37AR2ExeL\n"
  84   "ZIkiW8DdU3w77XwEu4C5KL6Om8aOoKUSy/VXHqLnu7czSZ/ju0quak1o/8kR4jKN\n"
  85   "zj2AC41179gAgY8oBAOgIo1hBAf6tjd9IQdJ0glhaZiQo1ipAgMBAAGjdjB0MAwG\n"
  86   "A1UdEwEB/wQCMAAwEwYDVR0lBAwwCgYIKwYBBQUHAwIwDwYDVR0PAQH/BAUDAweg\n"
  87   "ADAdBgNVHQ4EFgQUTLkKm/odNON+3svSBxX+odrLaJEwHwYDVR0jBBgwFoAU6Twc\n"
  88   "+62SbuYGpFYsouHAUyfI8pUwCwYJKoZIhvcNAQEFA4GBALujmBJVZnvaTXr9cFRJ\n"
  89   "jpfc/3X7sLUsMvumcDE01ls/cG5mIatmiyEU9qI3jbgUf82z23ON/acwJf875D3/\n"
  90   "U7jyOsBJ44SEQITbin2yUeJMIm1tievvdNXBDfW95AM507ShzP12sfiJkJfjjdhy\n"
  91   "dc8Siq5JojruiMizAf0pA7in\n" "-----END CERTIFICATE-----\n";
  92 const gnutls_datum_t cert = { cert_pem, sizeof (cert_pem) };
  93
  94 static unsigned char key_pem[] =
  95   "-----BEGIN RSA PRIVATE KEY-----\n"
  96   "MIICXAIBAAKBgQC7ZkP18sXXtozMxd/1iDuxyUtqDqGtIFBACIChT1yj0Phsz+Y8\n"
  97   "9+wEdhMXi2SJIlvA3VN8O+18BLuAuSi+jpvGjqClEsv1Vx6i57u3M0mf47tKrmpN\n"
  98   "aP/JEeIyjc49gAuNde/YAIGPKAQDoCKNYQQH+rY3fSEHSdIJYWmYkKNYqQIDAQAB\n"
  99   "AoGADpmARG5CQxS+AesNkGmpauepiCz1JBF/JwnyiX6vEzUh0Ypd39SZztwrDxvF\n"
 100   "PJjQaKVljml1zkJpIDVsqvHdyVdse8M+Qn6hw4x2p5rogdvhhIL1mdWo7jWeVJTF\n"
 101   "RKB7zLdMPs3ySdtcIQaF9nUAQ2KJEvldkO3m/bRJFEp54k0CQQDYy+RlTmwRD6hy\n"
 102   "7UtMjR0H3CSZJeQ8svMCxHLmOluG9H1UKk55ZBYfRTsXniqUkJBZ5wuV1L+pR9EK\n"
 103   "ca89a+1VAkEA3UmBelwEv2u9cAU1QjKjmwju1JgXbrjEohK+3B5y0ESEXPAwNQT9\n"
 104   "TrDM1m9AyxYTWLxX93dI5QwNFJtmbtjeBQJARSCWXhsoaDRG8QZrCSjBxfzTCqZD\n"
 105   "ZXtl807ymCipgJm60LiAt0JLr4LiucAsMZz6+j+quQbSakbFCACB8SLV1QJBAKZQ\n"
 106   "YKf+EPNtnmta/rRKKvySsi3GQZZN+Dt3q0r094XgeTsAqrqujVNfPhTMeP4qEVBX\n"
 107   "/iVX2cmMTSh3w3z8MaECQEp0XJWDVKOwcTW6Ajp9SowtmiZ3YDYo1LF9igb4iaLv\n"
 108   "sWZGfbnU3ryjvkb6YuFjgtzbZDZHWQCo8/cOtOBmPdk=\n"
 109   "-----END RSA PRIVATE KEY-----\n";
 110 const gnutls_datum_t key = { key_pem, sizeof (key_pem) };
 111
 112 #define EXPECT_RDN0 "GnuTLS test CA"
 113
 114 static int
 115 cert_callback (gnutls_session_t session,
 116                const gnutls_datum_t * req_ca_rdn, int nreqs,
 117                const gnutls_pk_algorithm_t * sign_algos,
 118                int sign_algos_length, gnutls_retr2_st * st)
 119 {
 120   int result;
 121   gnutls_x509_dn_t dn;
 122
 123   if (nreqs != 1)
 124     {
 125       fail ("client: invoked to provide client cert, %d CA .\n", nreqs);
 126       return -1;
 127     }
 128
 129   if (debug)
 130     success ("client: invoked to provide client cert.\n");
 131
 132   result = gnutls_x509_dn_init (&dn);
 133   if (result < 0)
 134     {
 135       fail ("client: could not initialize DN.\n");
 136       return -1;
 137     }
 138
 139   result = gnutls_x509_dn_import (dn, req_ca_rdn);
 140   if (result == 0)
 141     {
 142       gnutls_x509_ava_st val;
 143
 144       if (debug)
 145         success ("client: imported DN.\n");
 146
 147       if (gnutls_x509_dn_get_rdn_ava (dn, 0, 0, &val) == 0)
 148         {
 149           if (debug)
 150             success ("client: got RDN 0.\n");
 151
 152           if (val.value.size == strlen (EXPECT_RDN0)
 153               && strncmp (val.value.data, EXPECT_RDN0, val.value.size) == 0)
 154             {
 155               if (debug)
 156                 success ("client: RND 0 correct.\n");
 157             }
 158           else
 159             {
 160               fail ("client: RND 0 bad: %.*s\n",
 161                     val.value.size, val.value.data);
 162               return -1;
 163             }
 164         }
 165       else
 166         {
 167           fail ("client: could not retrieve RDN 0.\n");
 168           return -1;
 169         }
 170
 171       gnutls_x509_dn_deinit (dn);
 172     }
 173   else
 174     {
 175       fail ("client: failed to parse RDN: %s\n", gnutls_strerror (result));
 176     }
 177
 178   return 0;
 179 }
 180
 181
 182 static void
 183 client (void)
 184 {
 185   int ret, sd, ii;
 186   gnutls_session_t session;
 187   char buffer[MAX_BUF + 1];
 188   gnutls_certificate_credentials_t xcred;
 189
 190   gnutls_global_init ();
 191
 192   gnutls_global_set_log_function (tls_log_func);
 193   if (debug)
 194     gnutls_global_set_log_level (4711);
 195
 196   gnutls_certificate_allocate_credentials (&xcred);
 197
 198   /* sets the trusted cas file
 199    */
 200   gnutls_certificate_set_x509_trust_mem (xcred, &ca, GNUTLS_X509_FMT_PEM);
 201
 202   gnutls_certificate_set_retrieve_function (xcred, cert_callback);
 203
 204   /* Initialize TLS session
 205    */
 206   gnutls_init (&session, GNUTLS_CLIENT);
 207
 208   /* Use default priorities */
 209   gnutls_set_default_priority (session);
 210
 211   /* put the x509 credentials to the current session
 212    */
 213   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, xcred);
 214
 215   /* connect to the peer
 216    */
 217   sd = tcp_connect ();
 218
 219   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 220
 221   /* Perform the TLS handshake
 222    */
 223   ret = gnutls_handshake (session);
 224
 225   if (ret < 0)
 226     {
 227       fail ("client: Handshake failed\n");
 228       gnutls_perror (ret);
 229       goto end;
 230     }
 231   else
 232     {
 233       if (debug)
 234         success ("client: Handshake was completed\n");
 235     }
 236
 237   if (debug)
 238     success ("client: TLS version is: %s\n",
 239              gnutls_protocol_get_name (gnutls_protocol_get_version
 240                                        (session)));
 241
 242   /* see the Getting peer's information example */
 243   if (debug)
 244     print_info (session);
 245
 246   gnutls_record_send (session, MSG, strlen (MSG));
 247
 248   ret = gnutls_record_recv (session, buffer, MAX_BUF);
 249   if (ret == 0)
 250     {
 251       if (debug)
 252         success ("client: Peer has closed the TLS connection\n");
 253       goto end;
 254     }
 255   else if (ret < 0)
 256     {
 257       fail ("client: Error: %s\n", gnutls_strerror (ret));
 258       goto end;
 259     }
 260
 261   if (debug)
 262     {
 263       printf ("- Received %d bytes: ", ret);
 264       for (ii = 0; ii < ret; ii++)
 265         {
 266           fputc (buffer[ii], stdout);
 267         }
 268       fputs ("\n", stdout);
 269     }
 270
 271   gnutls_bye (session, GNUTLS_SHUT_RDWR);
 272
 273 end:
 274
 275   tcp_close (sd);
 276
 277   gnutls_deinit (session);
 278
 279   gnutls_certificate_free_credentials (xcred);
 280
 281   gnutls_global_deinit ();
 282 }
 283
 284 /* This is a sample TLS 1.0 echo server, using X.509 authentication.
 285  */
 286
 287 #define SA struct sockaddr
 288 #define MAX_BUF 1024
 289 #define PORT 5556               /* listen to 5556 port */
 290 #define DH_BITS 1024
 291
 292 /* These are global */
 293 gnutls_certificate_credentials_t x509_cred;
 294
 295 static gnutls_session_t
 296 initialize_tls_session (void)
 297 {
 298   gnutls_session_t session;
 299
 300   gnutls_init (&session, GNUTLS_SERVER);
 301
 302   /* avoid calling all the priority functions, since the defaults
 303    * are adequate.
 304    */
 305   gnutls_set_default_priority (session);
 306
 307   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 308
 309   /* request client certificate if any.
 310    */
 311   gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUEST);
 312
 313   gnutls_dh_set_prime_bits (session, DH_BITS);
 314
 315   return session;
 316 }
 317
 318 static gnutls_dh_params_t dh_params;
 319
 320 static int
 321 generate_dh_params (void)
 322 {
 323   const gnutls_datum_t p3 = { (char *) pkcs3, strlen (pkcs3) };
 324   /* Generate Diffie-Hellman parameters - for use with DHE
 325    * kx algorithms. These should be discarded and regenerated
 326    * once a day, once a week or once a month. Depending on the
 327    * security requirements.
 328    */
 329   gnutls_dh_params_init (&dh_params);
 330   return gnutls_dh_params_import_pkcs3 (dh_params, &p3, GNUTLS_X509_FMT_PEM);
 331 }
 332
 333 int err, listen_sd, i;
 334 int sd, ret;
 335 struct sockaddr_in sa_serv;
 336 struct sockaddr_in sa_cli;
 337 int client_len;
 338 char topbuf[512];
 339 gnutls_session_t session;
 340 char buffer[MAX_BUF + 1];
 341 int optval = 1;
 342
 343
 344 static unsigned char server_cert_pem[] =
 345   "-----BEGIN CERTIFICATE-----\n"
 346   "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
 347   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
 348   "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
 349   "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
 350   "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
 351   "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
 352   "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
 353   "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
 354   "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
 355   "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
 356   "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
 357   "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
 358   "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
 359
 360 const gnutls_datum_t server_cert = { server_cert_pem,
 361   sizeof (server_cert_pem)
 362 };
 363
 364 static unsigned char server_key_pem[] =
 365   "-----BEGIN RSA PRIVATE KEY-----\n"
 366   "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
 367   "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
 368   "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
 369   "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
 370   "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
 371   "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
 372   "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
 373   "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
 374   "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
 375   "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
 376   "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
 377   "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
 378   "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
 379   "-----END RSA PRIVATE KEY-----\n";
 380
 381 const gnutls_datum_t server_key = { server_key_pem,
 382   sizeof (server_key_pem)
 383 };
 384
 385 static void
 386 server_start (void)
 387 {
 388   /* Socket operations
 389    */
 390   listen_sd = socket (AF_INET, SOCK_STREAM, 0);
 391   if (err == -1)
 392     {
 393       perror ("socket");
 394       fail ("server: socket failed\n");
 395       return;
 396     }
 397
 398   memset (&sa_serv, '\0', sizeof (sa_serv));
 399   sa_serv.sin_family = AF_INET;
 400   sa_serv.sin_addr.s_addr = INADDR_ANY;
 401   sa_serv.sin_port = htons (PORT);      /* Server Port number */
 402
 403   setsockopt (listen_sd, SOL_SOCKET, SO_REUSEADDR, (void *) &optval,
 404               sizeof (int));
 405
 406   err = bind (listen_sd, (SA *) & sa_serv, sizeof (sa_serv));
 407   if (err == -1)
 408     {
 409       perror ("bind");
 410       fail ("server: bind failed\n");
 411       return;
 412     }
 413
 414   err = listen (listen_sd, 1024);
 415   if (err == -1)
 416     {
 417       perror ("listen");
 418       fail ("server: listen failed\n");
 419       return;
 420     }
 421
 422   if (debug)
 423     success ("server: ready. Listening to port '%d'.\n", PORT);
 424 }
 425
 426 static void
 427 server (void)
 428 {
 429   /* this must be called once in the program
 430    */
 431   gnutls_global_init ();
 432
 433   gnutls_global_set_log_function (tls_log_func);
 434   if (debug)
 435     gnutls_global_set_log_level (4711);
 436
 437   gnutls_certificate_allocate_credentials (&x509_cred);
 438   gnutls_certificate_set_x509_trust_mem (x509_cred, &ca, GNUTLS_X509_FMT_PEM);
 439
 440   gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
 441                                        GNUTLS_X509_FMT_PEM);
 442
 443   if (debug)
 444     success ("Launched, generating DH parameters...\n");
 445
 446   generate_dh_params ();
 447
 448   gnutls_certificate_set_dh_params (x509_cred, dh_params);
 449
 450   client_len = sizeof (sa_cli);
 451
 452   session = initialize_tls_session ();
 453
 454   sd = accept (listen_sd, (SA *) & sa_cli, &client_len);
 455
 456   if (debug)
 457     success ("server: connection from %s, port %d\n",
 458              inet_ntop (AF_INET, &sa_cli.sin_addr, topbuf,
 459                         sizeof (topbuf)), ntohs (sa_cli.sin_port));
 460
 461   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 462   ret = gnutls_handshake (session);
 463   if (ret < 0)
 464     {
 465       close (sd);
 466       gnutls_deinit (session);
 467       fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
 468       return;
 469     }
 470   if (debug)
 471     success ("server: Handshake was completed\n");
 472
 473   if (debug)
 474     success ("server: TLS version is: %s\n",
 475              gnutls_protocol_get_name (gnutls_protocol_get_version
 476                                        (session)));
 477
 478   /* see the Getting peer's information example */
 479   if (debug)
 480     print_info (session);
 481
 482   i = 0;
 483   for (;;)
 484     {
 485       memset (buffer, 0, MAX_BUF + 1);
 486       ret = gnutls_record_recv (session, buffer, MAX_BUF);
 487
 488       if (ret == 0)
 489         {
 490           if (debug)
 491             success ("server: Peer has closed the GnuTLS connection\n");
 492           break;
 493         }
 494       else if (ret < 0)
 495         {
 496           fail ("server: Received corrupted data(%d). Closing...\n", ret);
 497           break;
 498         }
 499       else if (ret > 0)
 500         {
 501           /* echo data back to the client
 502            */
 503           gnutls_record_send (session, buffer, strlen (buffer));
 504         }
 505     }
 506   /* do not wait for the peer to close the connection.
 507    */
 508   gnutls_bye (session, GNUTLS_SHUT_WR);
 509
 510   close (sd);
 511   gnutls_deinit (session);
 512
 513   close (listen_sd);
 514
 515   gnutls_certificate_free_credentials (x509_cred);
 516
 517   gnutls_dh_params_deinit (dh_params);
 518
 519   gnutls_global_deinit ();
 520
 521   if (debug)
 522     success ("server: finished\n");
 523 }
 524
 525
 526 void
 527 doit (void)
 528 {
 529   server_start ();
 530   if (error_count)
 531     return;
 532
 533   child = fork ();
 534   if (child < 0)
 535     {
 536       perror ("fork");
 537       fail ("fork");
 538       return;
 539     }
 540
 541   if (child)
 542     {
 543       int status;
 544       /* parent */
 545       server ();
 546       wait (&status);
 547
 548 #if defined WIFEXITED && defined WEXITSTATUS
 549       if (WIFEXITED (status) && WEXITSTATUS (status))
 550         {
 551           fail ("server: client failed with exit status %d\n",
 552                 WEXITSTATUS (status));
 553         }
 554 #endif
 555
 556 #if defined WIFSIGNALED && defined WTERMSIG
 557       if (WIFSIGNALED (status))
 558         {
 559           fail ("server: client failed with fatal signal %d\n",
 560                 WTERMSIG (status));
 561         }
 562 #endif
 563
 564     }
 565   else
 566     client ();
 567 }