tests/mini-record.c

   1 /*
   2  * Copyright (C) 2012 Free Software Foundation, Inc.
   3  *
   4  * Author: Nikos Mavrogiannopoulos
   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 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29
  30 #if defined(_WIN32)
  31
  32 int main()
  33 {
  34   exit(77);
  35 }
  36
  37 #else
  38
  39 #include <string.h>
  40 #include <sys/types.h>
  41 #include <netinet/in.h>
  42 #include <sys/socket.h>
  43 #include <sys/wait.h>
  44 #include <arpa/inet.h>
  45 #include <unistd.h>
  46 #include <gnutls/gnutls.h>
  47 #include <gnutls/dtls.h>
  48 #include <signal.h>
  49
  50 #include "utils.h"
  51
  52 static void terminate(void);
  53
  54 /* This program tests the robustness of record
  55  * decoding.
  56  */
  57
  58 static void
  59 server_log_func (int level, const char *str)
  60 {
  61 //  fprintf (stderr, "server|<%d>| %s", level, str);
  62 }
  63
  64 static void
  65 client_log_func (int level, const char *str)
  66 {
  67   fprintf (stderr, "client|<%d>| %s", level, str);
  68 }
  69
  70 static unsigned char server_cert_pem[] =
  71   "-----BEGIN CERTIFICATE-----\n"
  72   "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
  73   "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
  74   "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
  75   "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
  76   "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
  77   "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
  78   "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
  79   "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
  80   "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
  81   "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
  82   "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
  83   "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
  84   "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
  85
  86 const gnutls_datum_t server_cert = { server_cert_pem,
  87   sizeof (server_cert_pem)
  88 };
  89
  90 static unsigned char server_key_pem[] =
  91   "-----BEGIN RSA PRIVATE KEY-----\n"
  92   "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
  93   "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
  94   "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
  95   "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
  96   "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
  97   "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
  98   "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
  99   "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
 100   "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
 101   "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
 102   "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
 103   "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
 104   "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
 105   "-----END RSA PRIVATE KEY-----\n";
 106
 107 const gnutls_datum_t server_key = { server_key_pem,
 108   sizeof (server_key_pem)
 109 };
 110
 111
 112 /* A very basic TLS client, with anonymous authentication.
 113  */
 114
 115 #define MAX_BUF 1024
 116
 117 static int to_send = -1;
 118
 119 static ssize_t
 120 push (gnutls_transport_ptr_t tr, const void *data, size_t len)
 121 {
 122 int fd = (long int)tr;
 123
 124   return send(fd, data, len, 0);
 125 }
 126
 127 #define RECORD_HEADER_SIZE (5+8)
 128
 129 static ssize_t
 130 push_crippled (gnutls_transport_ptr_t tr, const void *data, size_t len)
 131 {
 132 int fd = (long int)tr;
 133 int _len, ret;
 134 uint8_t* _data = (void*)data;
 135
 136   if (to_send == -1)
 137     return send(fd, data, len, 0);
 138   else
 139     {
 140 //      _len = ((uint8_t*)data)[11] << 8 | ((uint8_t*)data)[12];
 141 //fprintf(stderr, "len : %d\n", (int)_len);
 142
 143       _len = to_send;
 144       _data[11] = _len >> 8;
 145       _data[12] = _len;
 146
 147       /* correct len */
 148       ret = send(fd, data, RECORD_HEADER_SIZE+_len, 0);
 149
 150       if (ret < 0) return ret;
 151
 152       return len;
 153     }
 154 }
 155
 156 static void
 157 client (int fd, const char* prio)
 158 {
 159   int ret;
 160   char buffer[MAX_BUF + 1];
 161   gnutls_anon_client_credentials_t anoncred;
 162   gnutls_certificate_credentials_t x509_cred;
 163   gnutls_session_t session;
 164   /* Need to enable anonymous KX specifically. */
 165
 166   gnutls_global_init ();
 167
 168   if (debug)
 169     {
 170       gnutls_global_set_log_function (client_log_func);
 171       gnutls_global_set_log_level (7);
 172     }
 173
 174   gnutls_anon_allocate_client_credentials (&anoncred);
 175   gnutls_certificate_allocate_credentials (&x509_cred);
 176
 177   /* Initialize TLS session
 178    */
 179   gnutls_init (&session, GNUTLS_CLIENT|GNUTLS_DATAGRAM);
 180   gnutls_dtls_set_mtu( session, 1500);
 181
 182   /* Use default priorities */
 183   gnutls_priority_set_direct (session, prio, NULL);
 184
 185   /* put the anonymous credentials to the current session
 186    */
 187   gnutls_credentials_set (session, GNUTLS_CRD_ANON, anoncred);
 188   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 189
 190   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) fd);
 191   gnutls_transport_set_push_function (session, push);
 192
 193   /* Perform the TLS handshake
 194    */
 195   do
 196     {
 197       ret = gnutls_handshake (session);
 198     }
 199   while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 200
 201   if (ret < 0)
 202     {
 203       fail ("client: Handshake failed\n");
 204       gnutls_perror (ret);
 205       exit(1);
 206     }
 207   else
 208     {
 209       if (debug)
 210         success ("client: Handshake was completed\n");
 211     }
 212
 213   if (debug)
 214     success ("client: TLS version is: %s\n",
 215              gnutls_protocol_get_name (gnutls_protocol_get_version
 216                                        (session)));
 217
 218   do {
 219     do {
 220       ret = gnutls_record_recv (session, buffer, MAX_BUF);
 221     } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
 222   } while( ret > 0);
 223
 224   if (ret == 0)
 225     {
 226       if (debug)
 227         success ("client: Peer has closed the TLS connection\n");
 228       goto end;
 229     }
 230   else if (ret < 0)
 231     {
 232       if (ret != 0)
 233         {
 234           fail ("client: Error: %s\n", gnutls_strerror (ret));
 235           exit(1);
 236         }
 237     }
 238
 239   gnutls_bye (session, GNUTLS_SHUT_WR);
 240
 241 end:
 242
 243   close (fd);
 244
 245   gnutls_deinit (session);
 246
 247   gnutls_anon_free_client_credentials (anoncred);
 248   gnutls_certificate_free_credentials (x509_cred);
 249
 250   gnutls_global_deinit ();
 251 }
 252
 253
 254 /* These are global */
 255 gnutls_anon_server_credentials_t anoncred;
 256 gnutls_certificate_credentials_t x509_cred;
 257 pid_t child;
 258
 259 static gnutls_session_t
 260 initialize_tls_session (const char* prio)
 261 {
 262   gnutls_session_t session;
 263
 264   gnutls_init (&session, GNUTLS_SERVER|GNUTLS_DATAGRAM);
 265   gnutls_dtls_set_mtu( session, 1500);
 266
 267   /* avoid calling all the priority functions, since the defaults
 268    * are adequate.
 269    */
 270   gnutls_priority_set_direct (session, prio, NULL);
 271
 272   gnutls_credentials_set (session, GNUTLS_CRD_ANON, anoncred);
 273   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 274
 275   return session;
 276 }
 277
 278 static void terminate(void)
 279 {
 280   kill(child, SIGTERM);
 281   exit(1);
 282 }
 283
 284 static void
 285 server (int fd, const char* prio)
 286 {
 287 int ret;
 288 char buffer[MAX_BUF + 1];
 289 gnutls_session_t session;
 290
 291   /* this must be called once in the program
 292    */
 293   gnutls_global_init ();
 294   memset(buffer, 0, sizeof(buffer));
 295
 296   if (debug)
 297     {
 298       gnutls_global_set_log_function (server_log_func);
 299       gnutls_global_set_log_level (4711);
 300     }
 301
 302   gnutls_certificate_allocate_credentials (&x509_cred);
 303   gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
 304                                        GNUTLS_X509_FMT_PEM);
 305
 306   gnutls_anon_allocate_server_credentials (&anoncred);
 307
 308   session = initialize_tls_session (prio);
 309
 310   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) fd);
 311   gnutls_transport_set_push_function (session, push_crippled);
 312
 313   do
 314     {
 315       ret = gnutls_handshake (session);
 316     }
 317   while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 318   if (ret < 0)
 319     {
 320       close (fd);
 321       gnutls_deinit (session);
 322       fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
 323       terminate();
 324     }
 325   if (debug)
 326     success ("server: Handshake was completed\n");
 327
 328   if (debug)
 329     success ("server: TLS version is: %s\n",
 330              gnutls_protocol_get_name (gnutls_protocol_get_version
 331                                        (session)));
 332   do
 333     {
 334       do {
 335         ret = gnutls_record_send (session, buffer, sizeof (buffer));
 336       } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
 337       usleep(400*1000);
 338
 339       if (ret < 0)
 340         {
 341           fail("Error sending %d byte packet\n", to_send);
 342           terminate();
 343         }
 344       to_send++;
 345     }
 346   while(to_send < 64);
 347
 348   to_send = -1;
 349   /* do not wait for the peer to close the connection.
 350    */
 351   gnutls_bye (session, GNUTLS_SHUT_WR);
 352
 353   close (fd);
 354   gnutls_deinit (session);
 355
 356   gnutls_anon_free_server_credentials (anoncred);
 357   gnutls_certificate_free_credentials (x509_cred);
 358
 359   gnutls_global_deinit ();
 360
 361   if (debug)
 362     success ("server: finished\n");
 363 }
 364
 365 static void start (const char* prio)
 366 {
 367   int fd[2];
 368   int ret;
 369
 370   ret = socketpair(AF_UNIX, SOCK_DGRAM, 0, fd);
 371   if (ret < 0)
 372     {
 373       perror("socketpair");
 374       exit(1);
 375     }
 376
 377   child = fork ();
 378   if (child < 0)
 379     {
 380       perror ("fork");
 381       fail ("fork");
 382       exit(1);
 383     }
 384
 385   if (child)
 386     {
 387       /* parent */
 388       close(fd[1]);
 389       server (fd[0], prio);
 390       kill(child, SIGTERM);
 391     }
 392   else
 393     {
 394       close(fd[0]);
 395       client (fd[1], prio);
 396       exit(0);
 397     }
 398 }
 399
 400 #define AES_CBC "NONE:+VERS-DTLS1.0:-CIPHER-ALL:+AES-128-CBC:+SHA1:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL"
 401 #define AES_CBC_SHA256 "NONE:+VERS-DTLS1.0:-CIPHER-ALL:+RSA:+AES-128-CBC:+AES-256-CBC:+SHA256:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL"
 402 #define AES_GCM "NONE:+VERS-DTLS1.0:-CIPHER-ALL:+RSA:+AES-128-GCM:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL"
 403
 404 static void ch_handler(int sig)
 405 {
 406 int status;
 407   wait(&status);
 408   if (WEXITSTATUS(status) != 0 ||
 409       (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV))
 410     {
 411       if (WIFSIGNALED(status))
 412         fail("Child died with sigsegv\n");
 413       else
 414         fail("Child died with status %d\n", WEXITSTATUS(status));
 415       terminate();
 416     }
 417   return;
 418 }
 419
 420 void
 421 doit (void)
 422 {
 423   signal(SIGCHLD, ch_handler);
 424
 425   start(AES_CBC);
 426   start(AES_CBC_SHA256);
 427   start(AES_GCM);
 428 }
 429
 430 #endif /* _WIN32 */