tests/x509self.c

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