tests/mini-record-range.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 1
  31
  32 int main(void)
  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 #define MAX_BUF 1024
  53 #define HIGH(x) (3*x)
  54 static void terminate(void);
  55 static int to_send;
  56
  57 /* This program tests the robustness of record range sending.
  58  */
  59
  60 static void server_log_func(int level, const char *str)
  61 {
  62         fprintf(stderr, "server|<%d>| %s", level, str);
  63 }
  64
  65 static void 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
 116
 117 static ssize_t
 118 push(gnutls_transport_ptr_t tr, const void *data, size_t len)
 119 {
 120         int fd = (long int) tr;
 121
 122         if (to_send >= 0 && len < HIGH(MAX_BUF)) {
 123                 fail("Sent data (%u) are lower than expected (%u)\n",
 124                      (unsigned) len, (unsigned) HIGH(MAX_BUF));
 125                 terminate();
 126         }
 127         return send(fd, data, len, 0);
 128 }
 129
 130 static void client(int fd, const char *prio)
 131 {
 132         int ret;
 133         char buffer[MAX_BUF + 1];
 134         gnutls_anon_client_credentials_t anoncred;
 135         gnutls_certificate_credentials_t x509_cred;
 136         gnutls_session_t session;
 137         /* Need to enable anonymous KX specifically. */
 138
 139         global_init();
 140
 141         if (debug) {
 142                 gnutls_global_set_log_function(client_log_func);
 143                 gnutls_global_set_log_level(7);
 144         }
 145
 146         gnutls_anon_allocate_client_credentials(&anoncred);
 147         gnutls_certificate_allocate_credentials(&x509_cred);
 148
 149         /* Initialize TLS session
 150          */
 151         gnutls_init(&session, GNUTLS_CLIENT);
 152
 153         /* Use default priorities */
 154         gnutls_priority_set_direct(session, prio, NULL);
 155
 156         /* put the anonymous credentials to the current session
 157          */
 158         gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
 159         gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 160
 161         gnutls_transport_set_int(session, fd);
 162
 163         /* Perform the TLS handshake
 164          */
 165         do {
 166                 ret = gnutls_handshake(session);
 167         }
 168         while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 169
 170         if (ret < 0) {
 171                 fail("client: Handshake failed\n");
 172                 gnutls_perror(ret);
 173                 exit(1);
 174         } else {
 175                 if (debug)
 176                         success("client: Handshake was completed\n");
 177         }
 178
 179         if (debug)
 180                 success("client: TLS version is: %s\n",
 181                         gnutls_protocol_get_name
 182                         (gnutls_protocol_get_version(session)));
 183
 184         do {
 185                 do {
 186                         ret = gnutls_record_recv(session, buffer, MAX_BUF);
 187                 } while (ret == GNUTLS_E_AGAIN
 188                          || ret == GNUTLS_E_INTERRUPTED);
 189         } while (ret > 0);
 190
 191         if (ret == 0) {
 192                 if (debug)
 193                         success
 194                             ("client: Peer has closed the TLS connection\n");
 195                 goto end;
 196         } else if (ret < 0) {
 197                 if (ret != 0) {
 198                         fail("client: Error: %s\n", gnutls_strerror(ret));
 199                         exit(1);
 200                 }
 201         }
 202
 203         gnutls_bye(session, GNUTLS_SHUT_WR);
 204
 205       end:
 206
 207         close(fd);
 208
 209         gnutls_deinit(session);
 210
 211         gnutls_anon_free_client_credentials(anoncred);
 212         gnutls_certificate_free_credentials(x509_cred);
 213
 214         gnutls_global_deinit();
 215 }
 216
 217
 218 /* These are global */
 219 pid_t child;
 220
 221 static void terminate(void)
 222 {
 223         kill(child, SIGTERM);
 224         exit(1);
 225 }
 226
 227 static void server(int fd, const char *prio)
 228 {
 229         int ret;
 230         char buffer[MAX_BUF + 1];
 231         gnutls_session_t session;
 232         gnutls_anon_server_credentials_t anoncred;
 233         gnutls_certificate_credentials_t x509_cred;
 234         gnutls_range_st range;
 235
 236         to_send = 0;
 237
 238         range.low = MAX_BUF;
 239         range.high = HIGH(MAX_BUF);
 240
 241         /* this must be called once in the program
 242          */
 243         global_init();
 244         memset(buffer, 0, sizeof(buffer));
 245
 246         if (debug) {
 247                 gnutls_global_set_log_function(server_log_func);
 248                 gnutls_global_set_log_level(4711);
 249         }
 250
 251         gnutls_certificate_allocate_credentials(&x509_cred);
 252         gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert,
 253                                             &server_key,
 254                                             GNUTLS_X509_FMT_PEM);
 255
 256         gnutls_anon_allocate_server_credentials(&anoncred);
 257
 258         gnutls_init(&session, GNUTLS_SERVER);
 259
 260         /* avoid calling all the priority functions, since the defaults
 261          * are adequate.
 262          */
 263         gnutls_priority_set_direct(session, prio, NULL);
 264
 265         gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
 266         gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
 267
 268         gnutls_transport_set_int(session, fd);
 269
 270         do {
 271                 ret = gnutls_handshake(session);
 272         }
 273         while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
 274         if (ret < 0) {
 275                 close(fd);
 276                 gnutls_deinit(session);
 277                 fail("server: Handshake has failed (%s)\n\n",
 278                      gnutls_strerror(ret));
 279                 terminate();
 280         }
 281         if (debug)
 282                 success("server: Handshake was completed\n");
 283
 284         if (debug)
 285                 success("server: TLS version is: %s\n",
 286                         gnutls_protocol_get_name
 287                         (gnutls_protocol_get_version(session)));
 288
 289         gnutls_transport_set_push_function(session, push);
 290
 291         if (gnutls_record_can_use_length_hiding(session) == 0) {
 292                 fail("Length hiding isn't possible\n");
 293                 terminate();
 294         }
 295
 296         do {
 297                 do {
 298                         ret =
 299                             gnutls_record_send_range(session, buffer,
 300                                                      sizeof(buffer),
 301                                                      &range);
 302                 } while (ret == GNUTLS_E_AGAIN
 303                          || ret == GNUTLS_E_INTERRUPTED);
 304
 305                 if (ret < 0) {
 306                         fail("Error sending packet: %s\n",
 307                              gnutls_strerror(ret));
 308                         terminate();
 309                 }
 310                 to_send++;
 311         }
 312         while (to_send < 4);
 313
 314         to_send = -1;
 315         /* do not wait for the peer to close the connection.
 316          */
 317         gnutls_bye(session, GNUTLS_SHUT_WR);
 318
 319         close(fd);
 320         gnutls_deinit(session);
 321
 322         gnutls_anon_free_server_credentials(anoncred);
 323         gnutls_certificate_free_credentials(x509_cred);
 324
 325         gnutls_global_deinit();
 326
 327         if (debug)
 328                 success("server: finished\n");
 329 }
 330
 331 static void start(const char *prio)
 332 {
 333         int fd[2];
 334         int ret;
 335
 336         ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
 337         if (ret < 0) {
 338                 perror("socketpair");
 339                 exit(1);
 340         }
 341
 342         child = fork();
 343         if (child < 0) {
 344                 perror("fork");
 345                 fail("fork");
 346                 exit(1);
 347         }
 348
 349         if (child) {
 350                 /* parent */
 351                 close(fd[1]);
 352                 server(fd[0], prio);
 353                 kill(child, SIGTERM);
 354         } else {
 355                 close(fd[0]);
 356                 client(fd[1], prio);
 357                 exit(0);
 358         }
 359 }
 360
 361 #define AES_CBC "NORMAL:+ANON-ECDH:+CURVE-ALL"
 362
 363 static void ch_handler(int sig)
 364 {
 365         int status;
 366         wait(&status);
 367         if (WEXITSTATUS(status) != 0 ||
 368             (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV)) {
 369                 if (WIFSIGNALED(status))
 370                         fail("Child died with sigsegv\n");
 371                 else
 372                         fail("Child died with status %d\n",
 373                              WEXITSTATUS(status));
 374                 terminate();
 375         }
 376         return;
 377 }
 378
 379 void doit(void)
 380 {
 381         signal(SIGCHLD, ch_handler);
 382
 383         start(AES_CBC);
 384 }
 385
 386 #endif                          /* _WIN32 */