tests/x509signself.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 #include <gnutls/x509.h>
  40
  41 #include "ex-session-info.c"
  42 #include "ex-x509-info.c"
  43 #include "tcp.c"
  44
  45 #include "utils.h"
  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 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 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 int
  93 sign_func (gnutls_session_t session,
  94            void *userdata,
  95            gnutls_certificate_type_t cert_type,
  96            const gnutls_datum_t * cert,
  97            const gnutls_datum_t * hash, gnutls_datum_t * signature)
  98 {
  99   gnutls_x509_privkey_t key;
 100   char key_pem[] =
 101     "-----BEGIN RSA PRIVATE KEY-----\n"
 102     "MIICXAIBAAKBgQC7ZkP18sXXtozMxd/1iDuxyUtqDqGtIFBACIChT1yj0Phsz+Y8\n"
 103     "9+wEdhMXi2SJIlvA3VN8O+18BLuAuSi+jpvGjqClEsv1Vx6i57u3M0mf47tKrmpN\n"
 104     "aP/JEeIyjc49gAuNde/YAIGPKAQDoCKNYQQH+rY3fSEHSdIJYWmYkKNYqQIDAQAB\n"
 105     "AoGADpmARG5CQxS+AesNkGmpauepiCz1JBF/JwnyiX6vEzUh0Ypd39SZztwrDxvF\n"
 106     "PJjQaKVljml1zkJpIDVsqvHdyVdse8M+Qn6hw4x2p5rogdvhhIL1mdWo7jWeVJTF\n"
 107     "RKB7zLdMPs3ySdtcIQaF9nUAQ2KJEvldkO3m/bRJFEp54k0CQQDYy+RlTmwRD6hy\n"
 108     "7UtMjR0H3CSZJeQ8svMCxHLmOluG9H1UKk55ZBYfRTsXniqUkJBZ5wuV1L+pR9EK\n"
 109     "ca89a+1VAkEA3UmBelwEv2u9cAU1QjKjmwju1JgXbrjEohK+3B5y0ESEXPAwNQT9\n"
 110     "TrDM1m9AyxYTWLxX93dI5QwNFJtmbtjeBQJARSCWXhsoaDRG8QZrCSjBxfzTCqZD\n"
 111     "ZXtl807ymCipgJm60LiAt0JLr4LiucAsMZz6+j+quQbSakbFCACB8SLV1QJBAKZQ\n"
 112     "YKf+EPNtnmta/rRKKvySsi3GQZZN+Dt3q0r094XgeTsAqrqujVNfPhTMeP4qEVBX\n"
 113     "/iVX2cmMTSh3w3z8MaECQEp0XJWDVKOwcTW6Ajp9SowtmiZ3YDYo1LF9igb4iaLv\n"
 114     "sWZGfbnU3ryjvkb6YuFjgtzbZDZHWQCo8/cOtOBmPdk=\n"
 115     "-----END RSA PRIVATE KEY-----\n";
 116   const gnutls_datum_t key_dat = { key_pem, sizeof (key_pem) };
 117   int ret;
 118
 119   ret = gnutls_x509_privkey_init (&key);
 120   if (ret < 0)
 121     return ret;
 122
 123   ret = gnutls_x509_privkey_import (key, &key_dat, GNUTLS_X509_FMT_PEM);
 124   if (ret < 0)
 125     goto done;
 126
 127   ret = gnutls_x509_privkey_sign_hash (key, hash, signature);
 128   if (ret < 0)
 129     goto done;
 130
 131   ret = 0;
 132
 133 done:
 134   gnutls_x509_privkey_deinit (key);
 135   return ret;
 136 }
 137
 138 static void
 139 client (void)
 140 {
 141   int ret, sd, ii;
 142   gnutls_session_t session;
 143   char buffer[MAX_BUF + 1];
 144   gnutls_certificate_credentials_t xcred;
 145
 146   gnutls_global_init ();
 147
 148   gnutls_global_set_log_function (tls_log_func);
 149   if (debug)
 150     gnutls_global_set_log_level (4711);
 151
 152   gnutls_certificate_allocate_credentials (&xcred);
 153
 154   /* sets the trusted cas file
 155    */
 156   gnutls_certificate_set_x509_trust_mem (xcred, &ca, GNUTLS_X509_FMT_PEM);
 157   gnutls_certificate_set_x509_key_mem (xcred, &cert, NULL,
 158                                        GNUTLS_X509_FMT_PEM);
 159
 160   /* Initialize TLS session
 161    */
 162   gnutls_init (&session, GNUTLS_CLIENT);
 163
 164   /* Set sign callback. */
 165   gnutls_sign_callback_set (session, sign_func, NULL);
 166
 167   /* Use default priorities */
 168   gnutls_set_default_priority (session);
 169
 170   /* put the x509 credentials to the current session
 171    */
 172   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, xcred);
 173
 174   /* connect to the peer
 175    */
 176   sd = tcp_connect ();
 177
 178   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 179
 180   /* Perform the TLS handshake
 181    */
 182   ret = gnutls_handshake (session);
 183
 184   if (ret < 0)
 185     {
 186       fail ("client: Handshake failed\n");
 187       gnutls_perror (ret);
 188       goto end;
 189     }
 190   else
 191     {
 192       success ("client: Handshake was completed\n");
 193     }
 194
 195   success ("client: TLS version is: %s\n",
 196            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 197
 198   /* see the Getting peer's information example */
 199   print_info (session);
 200
 201   gnutls_record_send (session, MSG, strlen (MSG));
 202
 203   ret = gnutls_record_recv (session, buffer, MAX_BUF);
 204   if (ret == 0)
 205     {
 206       success ("client: Peer has closed the TLS connection\n");
 207       goto end;
 208     }
 209   else if (ret < 0)
 210     {
 211       fail ("client: Error: %s\n", gnutls_strerror (ret));
 212       goto end;
 213     }
 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   gnutls_bye (session, GNUTLS_SHUT_RDWR);
 223
 224 end:
 225
 226   tcp_close (sd);
 227
 228   gnutls_deinit (session);
 229
 230   gnutls_certificate_free_credentials (xcred);
 231
 232   gnutls_global_deinit ();
 233 }
 234
 235 /* This is a sample TLS 1.0 echo server, using X.509 authentication.
 236  */
 237
 238 #define SA struct sockaddr
 239 #define MAX_BUF 1024
 240 #define PORT 5556               /* listen to 5556 port */
 241 #define DH_BITS 1024
 242
 243 /* These are global */
 244 gnutls_certificate_credentials_t x509_cred;
 245
 246 static gnutls_session_t
 247 initialize_tls_session (void)
 248 {
 249   gnutls_session_t session;
 250
 251   gnutls_init (&session, GNUTLS_SERVER);
 252
 253   /* avoid calling all the priority functions, since the defaults
 254    * are adequate.
 255    */
 256   gnutls_set_default_priority (session);
 257
 258   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 259
 260   /* request client certificate if any.
 261    */
 262   gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUEST);
 263
 264   gnutls_dh_set_prime_bits (session, DH_BITS);
 265
 266   return session;
 267 }
 268
 269 static gnutls_dh_params_t dh_params;
 270
 271 static int
 272 generate_dh_params (void)
 273 {
 274   const gnutls_datum_t p3 = { (char*) pkcs3, strlen (pkcs3) };
 275   /* Generate Diffie-Hellman parameters - for use with DHE
 276    * kx algorithms. These should be discarded and regenerated
 277    * once a day, once a week or once a month. Depending on the
 278    * security requirements.
 279    */
 280   gnutls_dh_params_init (&dh_params);
 281   return gnutls_dh_params_import_pkcs3 (dh_params, &p3, GNUTLS_X509_FMT_PEM);
 282 }
 283
 284 int err, listen_sd, i;
 285 int sd, ret;
 286 struct sockaddr_in sa_serv;
 287 struct sockaddr_in sa_cli;
 288 int client_len;
 289 char topbuf[512];
 290 gnutls_session_t session;
 291 char buffer[MAX_BUF + 1];
 292 int optval = 1;
 293
 294 static char server_cert_pem[] =
 295   "-----BEGIN CERTIFICATE-----\n"
 296   "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
 297   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
 298   "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
 299   "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
 300   "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
 301   "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
 302   "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
 303   "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
 304   "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
 305   "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
 306   "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
 307   "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
 308   "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
 309
 310 const gnutls_datum_t server_cert = { server_cert_pem,
 311   sizeof (server_cert_pem)
 312 };
 313
 314 static char server_key_pem[] =
 315   "-----BEGIN RSA PRIVATE KEY-----\n"
 316   "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
 317   "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
 318   "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
 319   "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
 320   "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
 321   "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
 322   "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
 323   "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
 324   "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
 325   "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
 326   "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
 327   "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
 328   "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
 329   "-----END RSA PRIVATE KEY-----\n";
 330
 331 const gnutls_datum_t server_key = { server_key_pem,
 332   sizeof (server_key_pem)
 333 };
 334
 335 static void
 336 server_start (void)
 337 {
 338   /* Socket operations
 339    */
 340   listen_sd = socket (AF_INET, SOCK_STREAM, 0);
 341   if (err == -1)
 342     {
 343       perror ("socket");
 344       fail ("server: socket failed\n");
 345       return;
 346     }
 347
 348   memset (&sa_serv, '\0', sizeof (sa_serv));
 349   sa_serv.sin_family = AF_INET;
 350   sa_serv.sin_addr.s_addr = INADDR_ANY;
 351   sa_serv.sin_port = htons (PORT);      /* Server Port number */
 352
 353   setsockopt (listen_sd, SOL_SOCKET, SO_REUSEADDR, (void *) &optval, 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 (4711);
 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           /* echo data back to the client
 443            */
 444           gnutls_record_send (session, buffer, strlen (buffer));
 445         }
 446     }
 447   /* do not wait for the peer to close the connection.
 448    */
 449   gnutls_bye (session, GNUTLS_SHUT_WR);
 450
 451   close (sd);
 452   gnutls_deinit (session);
 453
 454   close (listen_sd);
 455
 456   gnutls_certificate_free_credentials (x509_cred);
 457
 458   gnutls_dh_params_deinit (dh_params);
 459
 460   gnutls_global_deinit ();
 461
 462   success ("server: finished\n");
 463 }
 464
 465
 466 void
 467 doit (void)
 468 {
 469   server_start ();
 470   if (error_count)
 471     return;
 472
 473   child = fork ();
 474   if (child < 0)
 475     {
 476       perror ("fork");
 477       fail ("fork");
 478       return;
 479     }
 480
 481   if (child)
 482     {
 483       int status;
 484       /* parent */
 485       server ();
 486       wait (&status);
 487     }
 488   else
 489     client ();
 490 }