tests/x509self.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 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   gnutls_global_set_log_level (4711);
 161
 162   gnutls_certificate_allocate_credentials (&xcred);
 163
 164   /* sets the trusted cas file
 165    */
 166   gnutls_certificate_set_x509_trust_mem (xcred, &ca, GNUTLS_X509_FMT_PEM);
 167   gnutls_certificate_set_x509_key_mem (xcred, &cert, &key,
 168                                        GNUTLS_X509_FMT_PEM);
 169
 170   /* Initialize TLS session
 171    */
 172   gnutls_init (&session, GNUTLS_CLIENT);
 173
 174   /* Use default priorities */
 175   gnutls_set_default_priority (session);
 176
 177   /* put the x509 credentials to the current session
 178    */
 179   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, xcred);
 180
 181   /* connect to the peer
 182    */
 183   sd = tcp_connect ();
 184
 185   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 186
 187   /* Perform the TLS handshake
 188    */
 189   ret = gnutls_handshake (session);
 190
 191   if (ret < 0)
 192     {
 193       fail ("client: Handshake failed\n");
 194       gnutls_perror (ret);
 195       goto end;
 196     }
 197   else
 198     {
 199       success ("client: Handshake was completed\n");
 200     }
 201
 202   success ("client: TLS version is: %s\n",
 203            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 204
 205   /* see the Getting peer's information example */
 206   print_info(session);
 207
 208   gnutls_record_send (session, MSG, strlen (MSG));
 209
 210   ret = gnutls_record_recv (session, buffer, MAX_BUF);
 211   if (ret == 0)
 212     {
 213       success ("client: Peer has closed the TLS connection\n");
 214       goto end;
 215     }
 216   else if (ret < 0)
 217     {
 218       fail ("client: Error: %s\n", gnutls_strerror (ret));
 219       goto end;
 220     }
 221
 222   printf ("- Received %d bytes: ", ret);
 223   for (ii = 0; ii < ret; ii++)
 224     {
 225       fputc (buffer[ii], stdout);
 226     }
 227   fputs ("\n", stdout);
 228
 229   gnutls_bye (session, GNUTLS_SHUT_RDWR);
 230
 231 end:
 232
 233   tcp_close (sd);
 234
 235   gnutls_deinit (session);
 236
 237   gnutls_certificate_free_credentials (xcred);
 238
 239   gnutls_global_deinit ();
 240 }
 241
 242 /* This is a sample TLS 1.0 echo server, using X.509 authentication.
 243  */
 244
 245 #define SA struct sockaddr
 246 #define MAX_BUF 1024
 247 #define PORT 5556               /* listen to 5556 port */
 248 #define DH_BITS 1024
 249
 250 /* These are global */
 251 gnutls_certificate_credentials_t x509_cred;
 252
 253 gnutls_session_t
 254 initialize_tls_session (void)
 255 {
 256   gnutls_session_t session;
 257
 258   gnutls_init (&session, GNUTLS_SERVER);
 259
 260   /* avoid calling all the priority functions, since the defaults
 261    * are adequate.
 262    */
 263   gnutls_set_default_priority (session);
 264
 265   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 266
 267   /* request client certificate if any.
 268    */
 269   gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUEST);
 270
 271   gnutls_dh_set_prime_bits (session, DH_BITS);
 272
 273   return session;
 274 }
 275
 276 static gnutls_dh_params_t dh_params;
 277
 278 static int
 279 generate_dh_params (void)
 280 {
 281   const gnutls_datum_t p3 = { pkcs3, strlen (pkcs3) };
 282   /* Generate Diffie Hellman parameters - for use with DHE
 283    * kx algorithms. These should be discarded and regenerated
 284    * once a day, once a week or once a month. Depending on the
 285    * security requirements.
 286    */
 287   gnutls_dh_params_init (&dh_params);
 288   return gnutls_dh_params_import_pkcs3 (dh_params, &p3, GNUTLS_X509_FMT_PEM);
 289 }
 290
 291 int err, listen_sd, i;
 292 int sd, ret;
 293 struct sockaddr_in sa_serv;
 294 struct sockaddr_in sa_cli;
 295 int client_len;
 296 char topbuf[512];
 297 gnutls_session_t session;
 298 char buffer[MAX_BUF + 1];
 299 int optval = 1;
 300
 301
 302 const char server_cert_pem[] =
 303   "-----BEGIN CERTIFICATE-----\n"
 304   "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
 305   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
 306   "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
 307   "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
 308   "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
 309   "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
 310   "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
 311   "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
 312   "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
 313   "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
 314   "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
 315   "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
 316   "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n"
 317   "-----END CERTIFICATE-----\n";
 318
 319 const gnutls_datum_t server_cert = { server_cert_pem,
 320                                      sizeof (server_cert_pem) };
 321
 322 const char server_key_pem[] =
 323   "-----BEGIN RSA PRIVATE KEY-----\n"
 324   "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
 325   "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
 326   "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
 327   "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
 328   "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
 329   "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
 330   "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
 331   "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
 332   "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
 333   "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
 334   "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
 335   "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
 336   "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
 337   "-----END RSA PRIVATE KEY-----\n";
 338
 339 const gnutls_datum_t server_key = { server_key_pem,
 340                                     sizeof (server_key_pem) };
 341
 342 void
 343 server_start (void)
 344 {
 345   /* this must be called once in the program
 346    */
 347   gnutls_global_init ();
 348
 349   gnutls_global_set_log_function (tls_log_func);
 350   gnutls_global_set_log_level (4711);
 351
 352   gnutls_certificate_allocate_credentials (&x509_cred);
 353   gnutls_certificate_set_x509_trust_mem (x509_cred, &ca, GNUTLS_X509_FMT_PEM);
 354
 355   gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
 356                                        GNUTLS_X509_FMT_PEM);
 357
 358   success ("Launched, generating DH parameters...\n");
 359
 360   generate_dh_params ();
 361
 362   gnutls_certificate_set_dh_params (x509_cred, dh_params);
 363
 364   /* Socket operations
 365    */
 366   listen_sd = socket (AF_INET, SOCK_STREAM, 0);
 367   if (err == -1)
 368     {
 369       perror ("socket");
 370       fail ("server: socket failed\n");
 371       return;
 372     }
 373
 374   memset (&sa_serv, '\0', sizeof (sa_serv));
 375   sa_serv.sin_family = AF_INET;
 376   sa_serv.sin_addr.s_addr = INADDR_ANY;
 377   sa_serv.sin_port = htons (PORT);      /* Server Port number */
 378
 379   setsockopt (listen_sd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof (int));
 380
 381   err = bind (listen_sd, (SA *) & sa_serv, sizeof (sa_serv));
 382   if (err == -1)
 383     {
 384       perror ("bind");
 385       fail ("server: bind failed\n");
 386       return;
 387     }
 388
 389   err = listen (listen_sd, 1024);
 390   if (err == -1)
 391     {
 392       perror ("listen");
 393       fail ("server: listen failed\n");
 394       return;
 395     }
 396
 397   success ("server: ready. Listening to port '%d'.\n", PORT);
 398 }
 399
 400 void
 401 server (void)
 402 {
 403   client_len = sizeof (sa_cli);
 404
 405   session = initialize_tls_session ();
 406
 407   sd = accept (listen_sd, (SA *) & sa_cli, &client_len);
 408
 409   success ("server: connection from %s, port %d\n",
 410            inet_ntop (AF_INET, &sa_cli.sin_addr, topbuf,
 411                       sizeof (topbuf)), ntohs (sa_cli.sin_port));
 412
 413   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 414   ret = gnutls_handshake (session);
 415   if (ret < 0)
 416     {
 417       close (sd);
 418       gnutls_deinit (session);
 419       fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
 420       return;
 421     }
 422   success ("server: Handshake was completed\n");
 423
 424   success ("server: TLS version is: %s\n",
 425            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 426
 427   /* see the Getting peer's information example */
 428   print_info(session);
 429
 430   i = 0;
 431   for (;;)
 432     {
 433       bzero (buffer, MAX_BUF + 1);
 434       ret = gnutls_record_recv (session, buffer, MAX_BUF);
 435
 436       if (ret == 0)
 437         {
 438           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           /* echo data back to the client
 449            */
 450           gnutls_record_send (session, buffer, strlen (buffer));
 451         }
 452     }
 453   /* do not wait for the peer to close the connection.
 454    */
 455   gnutls_bye (session, GNUTLS_SHUT_WR);
 456
 457   close (sd);
 458   gnutls_deinit (session);
 459
 460   close (listen_sd);
 461
 462   gnutls_certificate_free_credentials (x509_cred);
 463
 464   gnutls_global_deinit ();
 465
 466   success ("server: finished\n");
 467 }
 468
 469
 470 void
 471 doit (void)
 472 {
 473   server_start ();
 474   if (error_count)
 475     return;
 476
 477   child = fork ();
 478   if (child < 0)
 479     {
 480       perror ("fork");
 481       fail ("fork");
 482       return;
 483     }
 484
 485   if (child)
 486     {
 487       int status;
 488       /* parent */
 489       server ();
 490       wait (&status);
 491     }
 492   else
 493     client ();
 494 }