tests/x509self.c

   1 /*
   2  * Copyright (C) 2004, 2005, 2006, 2007, 2008 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 void
 150 client (void)
 151 {
 152   int ret, sd, ii;
 153   gnutls_session_t session;
 154   char buffer[MAX_BUF + 1];
 155   gnutls_certificate_credentials_t xcred;
 156
 157   gnutls_global_init ();
 158
 159   gnutls_global_set_log_function (tls_log_func);
 160   if (debug)
 161     gnutls_global_set_log_level (4711);
 162
 163   gnutls_certificate_allocate_credentials (&xcred);
 164
 165   /* sets the trusted cas file
 166    */
 167   gnutls_certificate_set_x509_trust_mem (xcred, &ca, GNUTLS_X509_FMT_PEM);
 168   gnutls_certificate_set_x509_key_mem (xcred, &cert, &key,
 169                                        GNUTLS_X509_FMT_PEM);
 170
 171   /* Initialize TLS session
 172    */
 173   gnutls_init (&session, GNUTLS_CLIENT);
 174
 175   /* Use default priorities */
 176   gnutls_set_default_priority (session);
 177
 178   /* put the x509 credentials to the current session
 179    */
 180   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, xcred);
 181
 182   /* connect to the peer
 183    */
 184   sd = tcp_connect ();
 185
 186   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 187
 188   /* Perform the TLS handshake
 189    */
 190   ret = gnutls_handshake (session);
 191
 192   if (ret < 0)
 193     {
 194       fail ("client: Handshake failed\n");
 195       gnutls_perror (ret);
 196       goto end;
 197     }
 198   else
 199     {
 200       success ("client: Handshake was completed\n");
 201     }
 202
 203   success ("client: TLS version is: %s\n",
 204            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 205
 206   /* see the Getting peer's information example */
 207   print_info(session);
 208
 209   gnutls_record_send (session, MSG, strlen (MSG));
 210
 211   ret = gnutls_record_recv (session, buffer, MAX_BUF);
 212   if (ret == 0)
 213     {
 214       success ("client: Peer has closed the TLS connection\n");
 215       goto end;
 216     }
 217   else if (ret < 0)
 218     {
 219       fail ("client: Error: %s\n", gnutls_strerror (ret));
 220       goto end;
 221     }
 222
 223   printf ("- Received %d bytes: ", ret);
 224   for (ii = 0; ii < ret; ii++)
 225     {
 226       fputc (buffer[ii], stdout);
 227     }
 228   fputs ("\n", stdout);
 229
 230   gnutls_bye (session, GNUTLS_SHUT_RDWR);
 231
 232 end:
 233
 234   tcp_close (sd);
 235
 236   gnutls_deinit (session);
 237
 238   gnutls_certificate_free_credentials (xcred);
 239
 240   gnutls_global_deinit ();
 241 }
 242
 243 /* This is a sample TLS 1.0 echo server, using X.509 authentication.
 244  */
 245
 246 #define SA struct sockaddr
 247 #define MAX_BUF 1024
 248 #define PORT 5556               /* listen to 5556 port */
 249 #define DH_BITS 1024
 250
 251 /* These are global */
 252 gnutls_certificate_credentials_t x509_cred;
 253
 254 gnutls_session_t
 255 initialize_tls_session (void)
 256 {
 257   gnutls_session_t session;
 258
 259   gnutls_init (&session, GNUTLS_SERVER);
 260
 261   /* avoid calling all the priority functions, since the defaults
 262    * are adequate.
 263    */
 264   gnutls_set_default_priority (session);
 265
 266   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 267
 268   /* request client certificate if any.
 269    */
 270   gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUEST);
 271
 272   gnutls_dh_set_prime_bits (session, DH_BITS);
 273
 274   return session;
 275 }
 276
 277 static gnutls_dh_params_t dh_params;
 278
 279 static int
 280 generate_dh_params (void)
 281 {
 282   const gnutls_datum_t p3 = { pkcs3, strlen (pkcs3) };
 283   /* Generate Diffie Hellman parameters - for use with DHE
 284    * kx algorithms. These should be discarded and regenerated
 285    * once a day, once a week or once a month. Depending on the
 286    * security requirements.
 287    */
 288   gnutls_dh_params_init (&dh_params);
 289   return gnutls_dh_params_import_pkcs3 (dh_params, &p3, GNUTLS_X509_FMT_PEM);
 290 }
 291
 292 int err, listen_sd, i;
 293 int sd, ret;
 294 struct sockaddr_in sa_serv;
 295 struct sockaddr_in sa_cli;
 296 int client_len;
 297 char topbuf[512];
 298 gnutls_session_t session;
 299 char buffer[MAX_BUF + 1];
 300 int optval = 1;
 301
 302
 303 const char server_cert_pem[] =
 304   "-----BEGIN CERTIFICATE-----\n"
 305   "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
 306   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
 307   "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
 308   "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
 309   "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
 310   "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
 311   "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
 312   "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
 313   "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
 314   "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
 315   "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
 316   "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
 317   "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n"
 318   "-----END CERTIFICATE-----\n";
 319
 320 const gnutls_datum_t server_cert = { server_cert_pem,
 321                                      sizeof (server_cert_pem) };
 322
 323 const char server_key_pem[] =
 324   "-----BEGIN RSA PRIVATE KEY-----\n"
 325   "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
 326   "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
 327   "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
 328   "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
 329   "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
 330   "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
 331   "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
 332   "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
 333   "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
 334   "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
 335   "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
 336   "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
 337   "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
 338   "-----END RSA PRIVATE KEY-----\n";
 339
 340 const gnutls_datum_t server_key = { server_key_pem,
 341                                     sizeof (server_key_pem) };
 342
 343 void
 344 server_start (void)
 345 {
 346   /* Socket operations
 347    */
 348   listen_sd = socket (AF_INET, SOCK_STREAM, 0);
 349   if (err == -1)
 350     {
 351       perror ("socket");
 352       fail ("server: socket failed\n");
 353       return;
 354     }
 355
 356   memset (&sa_serv, '\0', sizeof (sa_serv));
 357   sa_serv.sin_family = AF_INET;
 358   sa_serv.sin_addr.s_addr = INADDR_ANY;
 359   sa_serv.sin_port = htons (PORT);      /* Server Port number */
 360
 361   setsockopt (listen_sd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof (int));
 362
 363   err = bind (listen_sd, (SA *) & sa_serv, sizeof (sa_serv));
 364   if (err == -1)
 365     {
 366       perror ("bind");
 367       fail ("server: bind failed\n");
 368       return;
 369     }
 370
 371   err = listen (listen_sd, 1024);
 372   if (err == -1)
 373     {
 374       perror ("listen");
 375       fail ("server: listen failed\n");
 376       return;
 377     }
 378
 379   success ("server: ready. Listening to port '%d'.\n", PORT);
 380 }
 381
 382 void
 383 server (void)
 384 {
 385   /* this must be called once in the program
 386    */
 387   gnutls_global_init ();
 388
 389   gnutls_global_set_log_function (tls_log_func);
 390   if (debug)
 391     gnutls_global_set_log_level (4711);
 392
 393   gnutls_certificate_allocate_credentials (&x509_cred);
 394   gnutls_certificate_set_x509_trust_mem (x509_cred, &ca, GNUTLS_X509_FMT_PEM);
 395
 396   gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
 397                                        GNUTLS_X509_FMT_PEM);
 398
 399   success ("Launched, generating DH parameters...\n");
 400
 401   generate_dh_params ();
 402
 403   gnutls_certificate_set_dh_params (x509_cred, dh_params);
 404
 405   client_len = sizeof (sa_cli);
 406
 407   session = initialize_tls_session ();
 408
 409   sd = accept (listen_sd, (SA *) & sa_cli, &client_len);
 410
 411   success ("server: connection from %s, port %d\n",
 412            inet_ntop (AF_INET, &sa_cli.sin_addr, topbuf,
 413                       sizeof (topbuf)), ntohs (sa_cli.sin_port));
 414
 415   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 416   ret = gnutls_handshake (session);
 417   if (ret < 0)
 418     {
 419       close (sd);
 420       gnutls_deinit (session);
 421       fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
 422       return;
 423     }
 424   success ("server: Handshake was completed\n");
 425
 426   success ("server: TLS version is: %s\n",
 427            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 428
 429   /* see the Getting peer's information example */
 430   print_info(session);
 431
 432   i = 0;
 433   for (;;)
 434     {
 435       bzero (buffer, MAX_BUF + 1);
 436       ret = gnutls_record_recv (session, buffer, MAX_BUF);
 437
 438       if (ret == 0)
 439         {
 440           success ("server: Peer has closed the GNUTLS connection\n");
 441           break;
 442         }
 443       else if (ret < 0)
 444         {
 445           fail ("server: Received corrupted data(%d). Closing...\n", ret);
 446           break;
 447         }
 448       else if (ret > 0)
 449         {
 450           /* echo data back to the client
 451            */
 452           gnutls_record_send (session, buffer, strlen (buffer));
 453         }
 454     }
 455   /* do not wait for the peer to close the connection.
 456    */
 457   gnutls_bye (session, GNUTLS_SHUT_WR);
 458
 459   close (sd);
 460   gnutls_deinit (session);
 461
 462   close (listen_sd);
 463
 464   gnutls_certificate_free_credentials (x509_cred);
 465
 466   gnutls_dh_params_deinit (dh_params);
 467
 468   gnutls_global_deinit ();
 469
 470   success ("server: finished\n");
 471 }
 472
 473
 474 void
 475 doit (void)
 476 {
 477   /* parent */
 478   server_start ();
 479   if (error_count)
 480     return;
 481
 482   child = fork ();
 483   if (child < 0)
 484     {
 485       perror ("fork");
 486       fail ("fork");
 487       return;
 488     }
 489
 490   if (child)
 491     {
 492       int status;
 493
 494       server ();
 495       wait (&status);
 496     }
 497   else
 498     client ();
 499 }