tests/x509self.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 static void
 111 client (void)
 112 {
 113   int ret, sd, ii;
 114   gnutls_session_t session;
 115   char buffer[MAX_BUF + 1];
 116   gnutls_certificate_credentials_t xcred;
 117
 118   gnutls_global_init ();
 119
 120   gnutls_global_set_log_function (tls_log_func);
 121   if (debug)
 122     gnutls_global_set_log_level (6);
 123
 124   gnutls_certificate_allocate_credentials (&xcred);
 125
 126   /* sets the trusted cas file
 127    */
 128   gnutls_certificate_set_x509_trust_mem (xcred, &ca, GNUTLS_X509_FMT_PEM);
 129   gnutls_certificate_set_x509_key_mem (xcred, &cert, &key,
 130                                        GNUTLS_X509_FMT_PEM);
 131
 132   /* Initialize TLS session
 133    */
 134   gnutls_init (&session, GNUTLS_CLIENT);
 135
 136   /* Use default priorities */
 137   gnutls_set_default_priority (session);
 138
 139   /* put the x509 credentials to the current session
 140    */
 141   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, xcred);
 142
 143   /* connect to the peer
 144    */
 145   sd = tcp_connect ();
 146
 147   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 148
 149   /* Perform the TLS handshake
 150    */
 151   ret = gnutls_handshake (session);
 152
 153   if (ret < 0)
 154     {
 155       fail ("client: Handshake failed\n");
 156       gnutls_perror (ret);
 157       goto end;
 158     }
 159   else if (debug)
 160     {
 161       success ("client: Handshake was completed\n");
 162     }
 163
 164   if (debug) success ("client: TLS version is: %s\n",
 165            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 166
 167   /* see the Getting peer's information example */
 168   if (debug) print_info (session);
 169
 170   ret = gnutls_record_send (session, MSG, strlen (MSG));
 171
 172   if (ret == strlen (MSG))
 173     {
 174       if (debug) success ("client: sent record.\n");
 175     }
 176   else
 177     {
 178       fail ("client: failed to send record.\n");
 179       gnutls_perror (ret);
 180       goto end;
 181     }
 182
 183   ret = gnutls_record_recv (session, buffer, MAX_BUF);
 184
 185   if (debug) success ("client: recv returned %d.\n", ret);
 186
 187   if (ret == GNUTLS_E_REHANDSHAKE)
 188     {
 189       if (debug) success ("client: doing handshake!\n");
 190       ret = gnutls_handshake (session);
 191       if (ret == 0)
 192         {
 193           if (debug) success ("client: handshake complete, reading again.\n");
 194           ret = gnutls_record_recv (session, buffer, MAX_BUF);
 195         }
 196       else
 197         {
 198           fail ("client: handshake failed.\n");
 199         }
 200     }
 201
 202   if (ret == 0)
 203     {
 204       if (debug) success ("client: Peer has closed the TLS connection\n");
 205       goto end;
 206     }
 207   else if (ret < 0)
 208     {
 209       fail ("client: Error: %s\n", gnutls_strerror (ret));
 210       goto end;
 211     }
 212
 213   if (debug)
 214     {
 215       printf ("- Received %d bytes: ", ret);
 216       for (ii = 0; ii < ret; ii++)
 217         {
 218           fputc (buffer[ii], stdout);
 219         }
 220       fputs ("\n", stdout);
 221     }
 222
 223   gnutls_bye (session, GNUTLS_SHUT_RDWR);
 224
 225 end:
 226
 227   tcp_close (sd);
 228
 229   gnutls_deinit (session);
 230
 231   gnutls_certificate_free_credentials (xcred);
 232
 233   gnutls_global_deinit ();
 234 }
 235
 236 /* This is a sample TLS 1.0 echo server, using X.509 authentication.
 237  */
 238
 239 #define SA struct sockaddr
 240 #define MAX_BUF 1024
 241 #define PORT 5556               /* listen to 5556 port */
 242 #define DH_BITS 1024
 243
 244 /* These are global */
 245 gnutls_certificate_credentials_t x509_cred;
 246
 247 static gnutls_session_t
 248 initialize_tls_session (void)
 249 {
 250   gnutls_session_t session;
 251
 252   gnutls_init (&session, GNUTLS_SERVER);
 253
 254   /* avoid calling all the priority functions, since the defaults
 255    * are adequate.
 256    */
 257   gnutls_set_default_priority (session);
 258
 259   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 260
 261   /* request client certificate if any.
 262      Moved to later on to be able to test re-handshakes.
 263      gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUEST);
 264    */
 265
 266   gnutls_dh_set_prime_bits (session, DH_BITS);
 267
 268   return session;
 269 }
 270
 271 static gnutls_dh_params_t dh_params;
 272
 273 static int
 274 generate_dh_params (void)
 275 {
 276   const gnutls_datum_t p3 = { (char *) pkcs3, strlen (pkcs3) };
 277   /* Generate Diffie-Hellman parameters - for use with DHE
 278    * kx algorithms. These should be discarded and regenerated
 279    * once a day, once a week or once a month. Depending on the
 280    * security requirements.
 281    */
 282   gnutls_dh_params_init (&dh_params);
 283   return gnutls_dh_params_import_pkcs3 (dh_params, &p3, GNUTLS_X509_FMT_PEM);
 284 }
 285
 286 int err, listen_sd, i;
 287 int sd, ret;
 288 struct sockaddr_in sa_serv;
 289 struct sockaddr_in sa_cli;
 290 int client_len;
 291 char topbuf[512];
 292 gnutls_session_t session;
 293 char buffer[MAX_BUF + 1];
 294 int optval = 1;
 295
 296
 297 static unsigned char server_cert_pem[] =
 298   "-----BEGIN CERTIFICATE-----\n"
 299   "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
 300   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
 301   "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
 302   "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
 303   "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
 304   "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
 305   "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
 306   "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
 307   "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
 308   "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
 309   "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
 310   "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
 311   "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
 312
 313 const gnutls_datum_t server_cert = { server_cert_pem,
 314   sizeof (server_cert_pem)
 315 };
 316
 317 static unsigned char server_key_pem[] =
 318   "-----BEGIN RSA PRIVATE KEY-----\n"
 319   "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
 320   "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
 321   "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
 322   "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
 323   "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
 324   "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
 325   "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
 326   "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
 327   "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
 328   "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
 329   "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
 330   "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
 331   "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
 332   "-----END RSA PRIVATE KEY-----\n";
 333
 334 const gnutls_datum_t server_key = { server_key_pem,
 335   sizeof (server_key_pem)
 336 };
 337
 338 static void
 339 server_start (void)
 340 {
 341   /* Socket operations
 342    */
 343   listen_sd = socket (AF_INET, SOCK_STREAM, 0);
 344   if (err == -1)
 345     {
 346       perror ("socket");
 347       fail ("server: socket failed\n");
 348       return;
 349     }
 350
 351   memset (&sa_serv, '\0', sizeof (sa_serv));
 352   sa_serv.sin_family = AF_INET;
 353   sa_serv.sin_addr.s_addr = INADDR_ANY;
 354   sa_serv.sin_port = htons (PORT);      /* Server Port number */
 355
 356   setsockopt (listen_sd, SOL_SOCKET, SO_REUSEADDR, (void *) &optval,
 357               sizeof (int));
 358
 359   err = bind (listen_sd, (SA *) & sa_serv, sizeof (sa_serv));
 360   if (err == -1)
 361     {
 362       perror ("bind");
 363       fail ("server: bind failed\n");
 364       return;
 365     }
 366
 367   err = listen (listen_sd, 1024);
 368   if (err == -1)
 369     {
 370       perror ("listen");
 371       fail ("server: listen failed\n");
 372       return;
 373     }
 374
 375   if (debug) success ("server: ready. Listening to port '%d'.\n", PORT);
 376 }
 377
 378 static void
 379 server (void)
 380 {
 381   /* this must be called once in the program
 382    */
 383   gnutls_global_init ();
 384
 385   gnutls_global_set_log_function (tls_log_func);
 386   if (debug)
 387     gnutls_global_set_log_level (6);
 388
 389   gnutls_certificate_allocate_credentials (&x509_cred);
 390   gnutls_certificate_set_x509_trust_mem (x509_cred, &ca, GNUTLS_X509_FMT_PEM);
 391
 392   gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
 393                                        GNUTLS_X509_FMT_PEM);
 394
 395   if (debug) success ("Launched, generating DH parameters...\n");
 396
 397   generate_dh_params ();
 398
 399   gnutls_certificate_set_dh_params (x509_cred, dh_params);
 400
 401   client_len = sizeof (sa_cli);
 402
 403   session = initialize_tls_session ();
 404
 405   sd = accept (listen_sd, (SA *) & sa_cli, &client_len);
 406
 407   if (debug) success ("server: connection from %s, port %d\n",
 408            inet_ntop (AF_INET, &sa_cli.sin_addr, topbuf,
 409                       sizeof (topbuf)), ntohs (sa_cli.sin_port));
 410
 411   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 412   ret = gnutls_handshake (session);
 413   if (ret < 0)
 414     {
 415       close (sd);
 416       gnutls_deinit (session);
 417       fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
 418       return;
 419     }
 420   if (debug)
 421     {
 422       success ("server: Handshake was completed\n");
 423       success ("server: TLS version is: %s\n",
 424            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 425     }
 426
 427   /* see the Getting peer's information example */
 428   if (debug) print_info (session);
 429
 430   i = 0;
 431   for (;;)
 432     {
 433       memset (buffer, 0, MAX_BUF + 1);
 434       ret = gnutls_record_recv (session, buffer, MAX_BUF);
 435
 436       if (ret == 0)
 437         {
 438           if (debug) success ("server: Peer has closed the GNUTLS connection\n");
 439           break;
 440         }
 441       else if (ret < 0)
 442         {
 443           fail ("server: Received corrupted data(%d). Closing...\n", ret);
 444           break;
 445         }
 446       else if (ret > 0)
 447         {
 448           gnutls_certificate_server_set_request (session,
 449                                                  GNUTLS_CERT_REQUEST);
 450
 451           if (debug) success ("server: got data, forcing rehandshake.\n");
 452
 453           ret = gnutls_rehandshake (session);
 454           if (ret < 0)
 455             {
 456               fail ("server: rehandshake failed\n");
 457               gnutls_perror (ret);
 458               break;
 459             }
 460
 461           ret = gnutls_handshake (session);
 462           if (ret < 0)
 463             {
 464               fail ("server: (re)handshake failed\n");
 465               gnutls_perror (ret);
 466               break;
 467             }
 468
 469           if (debug) success ("server: rehandshake complete.\n");
 470
 471           /* echo data back to the client
 472            */
 473           gnutls_record_send (session, buffer, strlen (buffer));
 474         }
 475     }
 476   /* do not wait for the peer to close the connection.
 477    */
 478   gnutls_bye (session, GNUTLS_SHUT_WR);
 479
 480   close (sd);
 481   gnutls_deinit (session);
 482
 483   close (listen_sd);
 484
 485   gnutls_certificate_free_credentials (x509_cred);
 486
 487   gnutls_dh_params_deinit (dh_params);
 488
 489   gnutls_global_deinit ();
 490
 491   if (debug) success ("server: finished\n");
 492 }
 493
 494
 495 void
 496 doit (void)
 497 {
 498   /* parent */
 499   server_start ();
 500   if (error_count)
 501     return;
 502
 503   child = fork ();
 504   if (child < 0)
 505     {
 506       perror ("fork");
 507       fail ("fork");
 508       return;
 509     }
 510
 511   if (child)
 512     {
 513       int status;
 514
 515       server ();
 516       wait (&status);
 517     }
 518   else
 519     client ();
 520 }