tests/x509signself.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 #include <gnutls/x509.h>
  41
  42 #include "ex-session-info.c"
  43 #include "ex-x509-info.c"
  44 #include "tcp.c"
  45
  46 #include "utils.h"
  47
  48 pid_t child;
  49
  50 static void
  51 tls_log_func (int level, const char *str)
  52 {
  53   fprintf (stderr, "%s |<%d>| %s", child ? "server" : "client", level, str);
  54 }
  55
  56 /* A very basic TLS client, with anonymous authentication.
  57  */
  58
  59 #define MAX_BUF 1024
  60 #define MSG "Hello TLS"
  61
  62 static char ca_pem[] =
  63   "-----BEGIN CERTIFICATE-----\n"
  64   "MIIB5zCCAVKgAwIBAgIERiYdJzALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
  65   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTExWhcNMDgwNDE3MTMyOTExWjAZMRcw\n"
  66   "FQYDVQQDEw5HbnVUTFMgdGVzdCBDQTCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA\n"
  67   "vuyYeh1vfmslnuggeEKgZAVmQ5ltSdUY7H25WGSygKMUYZ0KT74v8C780qtcNt9T\n"
  68   "7EPH/N6RvB4BprdssgcQLsthR3XKA84jbjjxNCcaGs33lvOz8A1nf8p3hD+cKfRi\n"
  69   "kfYSW2JazLrtCC4yRCas/SPOUxu78of+3HiTfFm/oXUCAwEAAaNDMEEwDwYDVR0T\n"
  70   "AQH/BAUwAwEB/zAPBgNVHQ8BAf8EBQMDBwQAMB0GA1UdDgQWBBTpPBz7rZJu5gak\n"
  71   "Viyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAiaIRqGfp1jPpNeVhABK60SU0KIAy\n"
  72   "njuu7kHq5peUgYn8Jd9zNzExBOEp1VOipGsf6G66oQAhDFp2o8zkz7ZH71zR4HEW\n"
  73   "KoX6n5Emn6DvcEH/9pAhnGxNHJAoS7czTKv/JDZJhkqHxyrE1fuLsg5Qv25DTw7+\n"
  74   "PfqUpIhz5Bbm7J4=\n" "-----END CERTIFICATE-----\n";
  75 const gnutls_datum_t ca = { ca_pem, sizeof (ca_pem) };
  76
  77 static char cert_pem[] =
  78   "-----BEGIN CERTIFICATE-----\n"
  79   "MIICHjCCAYmgAwIBAgIERiYdNzALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
  80   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTI3WhcNMDgwNDE3MTMyOTI3WjAdMRsw\n"
  81   "GQYDVQQDExJHbnVUTFMgdGVzdCBjbGllbnQwgZwwCwYJKoZIhvcNAQEBA4GMADCB\n"
  82   "iAKBgLtmQ/Xyxde2jMzF3/WIO7HJS2oOoa0gUEAIgKFPXKPQ+GzP5jz37AR2ExeL\n"
  83   "ZIkiW8DdU3w77XwEu4C5KL6Om8aOoKUSy/VXHqLnu7czSZ/ju0quak1o/8kR4jKN\n"
  84   "zj2AC41179gAgY8oBAOgIo1hBAf6tjd9IQdJ0glhaZiQo1ipAgMBAAGjdjB0MAwG\n"
  85   "A1UdEwEB/wQCMAAwEwYDVR0lBAwwCgYIKwYBBQUHAwIwDwYDVR0PAQH/BAUDAweg\n"
  86   "ADAdBgNVHQ4EFgQUTLkKm/odNON+3svSBxX+odrLaJEwHwYDVR0jBBgwFoAU6Twc\n"
  87   "+62SbuYGpFYsouHAUyfI8pUwCwYJKoZIhvcNAQEFA4GBALujmBJVZnvaTXr9cFRJ\n"
  88   "jpfc/3X7sLUsMvumcDE01ls/cG5mIatmiyEU9qI3jbgUf82z23ON/acwJf875D3/\n"
  89   "U7jyOsBJ44SEQITbin2yUeJMIm1tievvdNXBDfW95AM507ShzP12sfiJkJfjjdhy\n"
  90   "dc8Siq5JojruiMizAf0pA7in\n" "-----END CERTIFICATE-----\n";
  91 const gnutls_datum_t cert = { cert_pem, sizeof (cert_pem) };
  92
  93 static int
  94 sign_func (gnutls_session_t session,
  95            void *userdata,
  96            gnutls_certificate_type_t cert_type,
  97            const gnutls_datum_t * cert,
  98            const gnutls_datum_t * hash, gnutls_datum_t * signature)
  99 {
 100   gnutls_x509_privkey_t key;
 101   char key_pem[] =
 102     "-----BEGIN RSA PRIVATE KEY-----\n"
 103     "MIICXAIBAAKBgQC7ZkP18sXXtozMxd/1iDuxyUtqDqGtIFBACIChT1yj0Phsz+Y8\n"
 104     "9+wEdhMXi2SJIlvA3VN8O+18BLuAuSi+jpvGjqClEsv1Vx6i57u3M0mf47tKrmpN\n"
 105     "aP/JEeIyjc49gAuNde/YAIGPKAQDoCKNYQQH+rY3fSEHSdIJYWmYkKNYqQIDAQAB\n"
 106     "AoGADpmARG5CQxS+AesNkGmpauepiCz1JBF/JwnyiX6vEzUh0Ypd39SZztwrDxvF\n"
 107     "PJjQaKVljml1zkJpIDVsqvHdyVdse8M+Qn6hw4x2p5rogdvhhIL1mdWo7jWeVJTF\n"
 108     "RKB7zLdMPs3ySdtcIQaF9nUAQ2KJEvldkO3m/bRJFEp54k0CQQDYy+RlTmwRD6hy\n"
 109     "7UtMjR0H3CSZJeQ8svMCxHLmOluG9H1UKk55ZBYfRTsXniqUkJBZ5wuV1L+pR9EK\n"
 110     "ca89a+1VAkEA3UmBelwEv2u9cAU1QjKjmwju1JgXbrjEohK+3B5y0ESEXPAwNQT9\n"
 111     "TrDM1m9AyxYTWLxX93dI5QwNFJtmbtjeBQJARSCWXhsoaDRG8QZrCSjBxfzTCqZD\n"
 112     "ZXtl807ymCipgJm60LiAt0JLr4LiucAsMZz6+j+quQbSakbFCACB8SLV1QJBAKZQ\n"
 113     "YKf+EPNtnmta/rRKKvySsi3GQZZN+Dt3q0r094XgeTsAqrqujVNfPhTMeP4qEVBX\n"
 114     "/iVX2cmMTSh3w3z8MaECQEp0XJWDVKOwcTW6Ajp9SowtmiZ3YDYo1LF9igb4iaLv\n"
 115     "sWZGfbnU3ryjvkb6YuFjgtzbZDZHWQCo8/cOtOBmPdk=\n"
 116     "-----END RSA PRIVATE KEY-----\n";
 117   const gnutls_datum_t key_dat = { key_pem, sizeof (key_pem) };
 118   int ret;
 119
 120   ret = gnutls_x509_privkey_init (&key);
 121   if (ret < 0)
 122     return ret;
 123
 124   ret = gnutls_x509_privkey_import (key, &key_dat, GNUTLS_X509_FMT_PEM);
 125   if (ret < 0)
 126     goto done;
 127
 128   ret = gnutls_x509_privkey_sign_hash (key, hash, signature);
 129   if (ret < 0)
 130     goto done;
 131
 132   ret = 0;
 133
 134 done:
 135   gnutls_x509_privkey_deinit (key);
 136   return ret;
 137 }
 138
 139 static void
 140 client (void)
 141 {
 142   int ret, sd, ii;
 143   gnutls_session_t session;
 144   char buffer[MAX_BUF + 1];
 145   gnutls_certificate_credentials_t xcred;
 146
 147   gnutls_global_init ();
 148
 149   gnutls_global_set_log_function (tls_log_func);
 150   if (debug)
 151     gnutls_global_set_log_level (4711);
 152
 153   gnutls_certificate_allocate_credentials (&xcred);
 154
 155   /* sets the trusted cas file
 156    */
 157   gnutls_certificate_set_x509_trust_mem (xcred, &ca, GNUTLS_X509_FMT_PEM);
 158   gnutls_certificate_set_x509_key_mem (xcred, &cert, NULL,
 159                                        GNUTLS_X509_FMT_PEM);
 160
 161   /* Initialize TLS session
 162    */
 163   gnutls_init (&session, GNUTLS_CLIENT);
 164
 165   /* Set sign callback. */
 166   gnutls_sign_callback_set (session, sign_func, NULL);
 167
 168   /* Use default priorities */
 169   gnutls_set_default_priority (session);
 170
 171   /* put the x509 credentials to the current session
 172    */
 173   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, xcred);
 174
 175   /* connect to the peer
 176    */
 177   sd = tcp_connect ();
 178
 179   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 180
 181   /* Perform the TLS handshake
 182    */
 183   ret = gnutls_handshake (session);
 184
 185   if (ret < 0)
 186     {
 187       fail ("client: Handshake failed\n");
 188       gnutls_perror (ret);
 189       goto end;
 190     }
 191   else
 192     {
 193       success ("client: Handshake was completed\n");
 194     }
 195
 196   success ("client: TLS version is: %s\n",
 197            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 198
 199   /* see the Getting peer's information example */
 200   print_info (session);
 201
 202   gnutls_record_send (session, MSG, strlen (MSG));
 203
 204   ret = gnutls_record_recv (session, buffer, MAX_BUF);
 205   if (ret == 0)
 206     {
 207       success ("client: Peer has closed the TLS connection\n");
 208       goto end;
 209     }
 210   else if (ret < 0)
 211     {
 212       fail ("client: Error: %s\n", gnutls_strerror (ret));
 213       goto end;
 214     }
 215
 216   printf ("- Received %d bytes: ", ret);
 217   for (ii = 0; ii < ret; ii++)
 218     {
 219       fputc (buffer[ii], stdout);
 220     }
 221   fputs ("\n", stdout);
 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    */
 263   gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUEST);
 264
 265   gnutls_dh_set_prime_bits (session, DH_BITS);
 266
 267   return session;
 268 }
 269
 270 static gnutls_dh_params_t dh_params;
 271
 272 static int
 273 generate_dh_params (void)
 274 {
 275   const gnutls_datum_t p3 = { (char *) pkcs3, strlen (pkcs3) };
 276   /* Generate Diffie-Hellman parameters - for use with DHE
 277    * kx algorithms. These should be discarded and regenerated
 278    * once a day, once a week or once a month. Depending on the
 279    * security requirements.
 280    */
 281   gnutls_dh_params_init (&dh_params);
 282   return gnutls_dh_params_import_pkcs3 (dh_params, &p3, GNUTLS_X509_FMT_PEM);
 283 }
 284
 285 int err, listen_sd, i;
 286 int sd, ret;
 287 struct sockaddr_in sa_serv;
 288 struct sockaddr_in sa_cli;
 289 int client_len;
 290 char topbuf[512];
 291 gnutls_session_t session;
 292 char buffer[MAX_BUF + 1];
 293 int optval = 1;
 294
 295 static char server_cert_pem[] =
 296   "-----BEGIN CERTIFICATE-----\n"
 297   "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
 298   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
 299   "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
 300   "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
 301   "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
 302   "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
 303   "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
 304   "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
 305   "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
 306   "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
 307   "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
 308   "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
 309   "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
 310
 311 const gnutls_datum_t server_cert = { server_cert_pem,
 312   sizeof (server_cert_pem)
 313 };
 314
 315 static char server_key_pem[] =
 316   "-----BEGIN RSA PRIVATE KEY-----\n"
 317   "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
 318   "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
 319   "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
 320   "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
 321   "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
 322   "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
 323   "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
 324   "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
 325   "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
 326   "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
 327   "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
 328   "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
 329   "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
 330   "-----END RSA PRIVATE KEY-----\n";
 331
 332 const gnutls_datum_t server_key = { server_key_pem,
 333   sizeof (server_key_pem)
 334 };
 335
 336 static void
 337 server_start (void)
 338 {
 339   /* Socket operations
 340    */
 341   listen_sd = socket (AF_INET, SOCK_STREAM, 0);
 342   if (err == -1)
 343     {
 344       perror ("socket");
 345       fail ("server: socket failed\n");
 346       return;
 347     }
 348
 349   memset (&sa_serv, '\0', sizeof (sa_serv));
 350   sa_serv.sin_family = AF_INET;
 351   sa_serv.sin_addr.s_addr = INADDR_ANY;
 352   sa_serv.sin_port = htons (PORT);      /* Server Port number */
 353
 354   setsockopt (listen_sd, SOL_SOCKET, SO_REUSEADDR, (void *) &optval,
 355               sizeof (int));
 356
 357   err = bind (listen_sd, (SA *) & sa_serv, sizeof (sa_serv));
 358   if (err == -1)
 359     {
 360       perror ("bind");
 361       fail ("server: bind failed\n");
 362       return;
 363     }
 364
 365   err = listen (listen_sd, 1024);
 366   if (err == -1)
 367     {
 368       perror ("listen");
 369       fail ("server: listen failed\n");
 370       return;
 371     }
 372
 373   success ("server: ready. Listening to port '%d'.\n", PORT);
 374 }
 375
 376 static void
 377 server (void)
 378 {
 379   /* this must be called once in the program
 380    */
 381   gnutls_global_init ();
 382
 383   gnutls_global_set_log_function (tls_log_func);
 384   if (debug)
 385     gnutls_global_set_log_level (4711);
 386
 387   gnutls_certificate_allocate_credentials (&x509_cred);
 388   gnutls_certificate_set_x509_trust_mem (x509_cred, &ca, GNUTLS_X509_FMT_PEM);
 389
 390   gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
 391                                        GNUTLS_X509_FMT_PEM);
 392
 393   success ("Launched, generating DH parameters...\n");
 394
 395   generate_dh_params ();
 396
 397   gnutls_certificate_set_dh_params (x509_cred, dh_params);
 398
 399   client_len = sizeof (sa_cli);
 400
 401   session = initialize_tls_session ();
 402
 403   sd = accept (listen_sd, (SA *) & sa_cli, &client_len);
 404
 405   success ("server: connection from %s, port %d\n",
 406            inet_ntop (AF_INET, &sa_cli.sin_addr, topbuf,
 407                       sizeof (topbuf)), ntohs (sa_cli.sin_port));
 408
 409   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
 410   ret = gnutls_handshake (session);
 411   if (ret < 0)
 412     {
 413       close (sd);
 414       gnutls_deinit (session);
 415       fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
 416       return;
 417     }
 418   success ("server: Handshake was completed\n");
 419
 420   success ("server: TLS version is: %s\n",
 421            gnutls_protocol_get_name (gnutls_protocol_get_version (session)));
 422
 423   /* see the Getting peer's information example */
 424   print_info (session);
 425
 426   i = 0;
 427   for (;;)
 428     {
 429       memset (buffer, 0, MAX_BUF + 1);
 430       ret = gnutls_record_recv (session, buffer, MAX_BUF);
 431
 432       if (ret == 0)
 433         {
 434           success ("server: Peer has closed the GNUTLS connection\n");
 435           break;
 436         }
 437       else if (ret < 0)
 438         {
 439           fail ("server: Received corrupted data(%d). Closing...\n", ret);
 440           break;
 441         }
 442       else if (ret > 0)
 443         {
 444           /* echo data back to the client
 445            */
 446           gnutls_record_send (session, buffer, strlen (buffer));
 447         }
 448     }
 449   /* do not wait for the peer to close the connection.
 450    */
 451   gnutls_bye (session, GNUTLS_SHUT_WR);
 452
 453   close (sd);
 454   gnutls_deinit (session);
 455
 456   close (listen_sd);
 457
 458   gnutls_certificate_free_credentials (x509_cred);
 459
 460   gnutls_dh_params_deinit (dh_params);
 461
 462   gnutls_global_deinit ();
 463
 464   success ("server: finished\n");
 465 }
 466
 467
 468 void
 469 doit (void)
 470 {
 471   server_start ();
 472   if (error_count)
 473     return;
 474
 475   child = fork ();
 476   if (child < 0)
 477     {
 478       perror ("fork");
 479       fail ("fork");
 480       return;
 481     }
 482
 483   if (child)
 484     {
 485       int status;
 486       /* parent */
 487       server ();
 488       wait (&status);
 489     }
 490   else
 491     client ();
 492 }