tests/mini-termination.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 void
 118 client (int fd, const char* prio)
 119 {
 120   int ret;
 121   char buffer[MAX_BUF + 1];
 122   gnutls_anon_client_credentials_t anoncred;
 123   gnutls_certificate_credentials_t x509_cred;
 124   gnutls_session_t session;
 125   /* Need to enable anonymous KX specifically. */
 126
 127   gnutls_global_init ();
 128
 129   if (debug)
 130     {
 131       gnutls_global_set_log_function (client_log_func);
 132       gnutls_global_set_log_level (7);
 133     }
 134
 135   gnutls_anon_allocate_client_credentials (&anoncred);
 136   gnutls_certificate_allocate_credentials (&x509_cred);
 137
 138   /* Initialize TLS session
 139    */
 140   gnutls_init (&session, GNUTLS_CLIENT);
 141
 142   /* Use default priorities */
 143   gnutls_priority_set_direct (session, prio, NULL);
 144
 145   /* put the anonymous credentials to the current session
 146    */
 147   gnutls_credentials_set (session, GNUTLS_CRD_ANON, anoncred);
 148   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 149
 150   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) fd);
 151
 152   /* Perform the TLS handshake
 153    */
 154   do
 155     {
 156       ret = gnutls_handshake (session);
 157     }
 158   while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 159
 160   if (ret < 0)
 161     {
 162       fail ("client: Handshake failed\n");
 163       gnutls_perror (ret);
 164       exit(1);
 165     }
 166   else
 167     {
 168       if (debug)
 169         success ("client: Handshake was completed\n");
 170     }
 171
 172   if (debug)
 173     success ("client: TLS version is: %s\n",
 174              gnutls_protocol_get_name (gnutls_protocol_get_version
 175                                        (session)));
 176   do {
 177     do {
 178       ret = gnutls_record_recv (session, buffer, MAX_BUF);
 179     } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
 180   } while( ret > 0);
 181
 182   if (ret == GNUTLS_E_PREMATURE_TERMINATION)
 183     {
 184       if (debug)
 185         success ("client: Peer has closed the TLS connection\n");
 186       goto end;
 187     }
 188   else
 189     {
 190       fail ("client: Unexpected error: %d (%s)\n", ret, gnutls_strerror (ret));
 191       exit(1);
 192     }
 193
 194 end:
 195   close (fd);
 196
 197   gnutls_deinit (session);
 198
 199   gnutls_anon_free_client_credentials (anoncred);
 200   gnutls_certificate_free_credentials (x509_cred);
 201
 202   gnutls_global_deinit ();
 203 }
 204
 205
 206 /* These are global */
 207 gnutls_anon_server_credentials_t anoncred;
 208 gnutls_certificate_credentials_t x509_cred;
 209 pid_t child;
 210
 211 static gnutls_session_t
 212 initialize_tls_session (const char* prio)
 213 {
 214   gnutls_session_t session;
 215
 216   gnutls_init (&session, GNUTLS_SERVER);
 217
 218   /* avoid calling all the priority functions, since the defaults
 219    * are adequate.
 220    */
 221   gnutls_priority_set_direct (session, prio, NULL);
 222
 223   gnutls_credentials_set (session, GNUTLS_CRD_ANON, anoncred);
 224   gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 225
 226   return session;
 227 }
 228
 229 static void terminate(void)
 230 {
 231   kill(child, SIGTERM);
 232   exit(1);
 233 }
 234
 235 static void
 236 server (int fd, const char* prio)
 237 {
 238 int ret;
 239 char buffer[MAX_BUF + 1];
 240 gnutls_session_t session;
 241
 242   /* this must be called once in the program
 243    */
 244   gnutls_global_init ();
 245   memset(buffer, 0, sizeof(buffer));
 246
 247   if (debug)
 248     {
 249       gnutls_global_set_log_function (server_log_func);
 250       gnutls_global_set_log_level (4711);
 251     }
 252
 253   gnutls_certificate_allocate_credentials (&x509_cred);
 254   gnutls_certificate_set_x509_key_mem (x509_cred, &server_cert, &server_key,
 255                                        GNUTLS_X509_FMT_PEM);
 256
 257   gnutls_anon_allocate_server_credentials (&anoncred);
 258
 259   session = initialize_tls_session (prio);
 260
 261   gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) fd);
 262
 263   do
 264     {
 265       ret = gnutls_handshake (session);
 266     }
 267   while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 268   if (ret < 0)
 269     {
 270       close (fd);
 271       gnutls_deinit (session);
 272       fail ("server: Handshake has failed (%s)\n\n", gnutls_strerror (ret));
 273       terminate();
 274     }
 275   if (debug)
 276     success ("server: Handshake was completed\n");
 277
 278   if (debug)
 279     success ("server: TLS version is: %s\n",
 280              gnutls_protocol_get_name (gnutls_protocol_get_version
 281                                        (session)));
 282   close(fd);
 283   gnutls_deinit (session);
 284
 285   gnutls_anon_free_server_credentials (anoncred);
 286   gnutls_certificate_free_credentials (x509_cred);
 287
 288   gnutls_global_deinit ();
 289
 290   if (debug)
 291     success ("server: finished\n");
 292 }
 293
 294 static void start (const char* prio)
 295 {
 296   int fd[2];
 297   int ret;
 298
 299   ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
 300   if (ret < 0)
 301     {
 302       perror("socketpair");
 303       exit(1);
 304     }
 305
 306   child = fork ();
 307   if (child < 0)
 308     {
 309       perror ("fork");
 310       fail ("fork");
 311       exit(1);
 312     }
 313
 314   if (child)
 315     {
 316       /* parent */
 317       close(fd[1]);
 318       server (fd[0], prio);
 319       waitpid(-1, NULL, 0);
 320       //kill(child, SIGTERM);
 321     }
 322   else
 323     {
 324       close(fd[0]);
 325       client (fd[1], prio);
 326       exit(0);
 327     }
 328 }
 329
 330 static void ch_handler(int sig)
 331 {
 332 int status = 0;
 333
 334   waitpid(-1, &status, 0);
 335   if (WEXITSTATUS(status) != 0 ||
 336       (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV))
 337     {
 338       if (WIFSIGNALED(status))
 339         fail("Child died with sigsegv\n");
 340       else
 341         fail("Child died with status %d\n", WEXITSTATUS(status));
 342       terminate();
 343     }
 344   return;
 345 }
 346
 347 void
 348 doit (void)
 349 {
 350   signal(SIGCHLD, ch_handler);
 351
 352   start("NORMAL");
 353 }
 354
 355 #endif /* _WIN32 */