tinc-vpn.org Git - tinc/blob - src/sptps_test.c

   1 /*
   2     sptps_test.c -- Simple Peer-to-Peer Security test program
   3     Copyright (C) 2011-2022 Guus Sliepen <guus@tinc-vpn.org>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License along
  16     with this program; if not, write to the Free Software Foundation, Inc.,
  17     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "system.h"
  21
  22 #ifdef HAVE_LINUX
  23 #include <linux/if_tun.h>
  24 #endif
  25
  26 #include "crypto.h"
  27 #include "ecdsa.h"
  28 #include "meta.h"
  29 #include "protocol.h"
  30 #include "sptps.h"
  31 #include "utils.h"
  32 #include "names.h"
  33 #include "random.h"
  34
  35 #ifndef HAVE_WINDOWS
  36 #define closesocket(s) close(s)
  37 #endif
  38
  39 // Symbols necessary to link with logger.o
  40 bool send_request(struct connection_t *c, const char *msg, ...) {
  41         (void)c;
  42         (void)msg;
  43         return false;
  44 }
  45
  46 list_t connection_list;
  47
  48 bool send_meta(struct connection_t *c, const void *msg, size_t len) {
  49         (void)c;
  50         (void)msg;
  51         (void)len;
  52         return false;
  53 }
  54
  55 bool do_detach = false;
  56 struct timeval now;
  57
  58 static bool special;
  59 static bool verbose;
  60 static bool readonly;
  61 static bool writeonly;
  62 static int in = 0;
  63 static int out = 1;
  64 int addressfamily = AF_UNSPEC;
  65
  66 static bool send_data(void *handle, uint8_t type, const void *data, size_t len) {
  67         (void)type;
  68         char *hex = alloca(len * 2 + 1);
  69         bin2hex(data, hex, len);
  70
  71         if(verbose) {
  72                 fprintf(stderr, "Sending %lu bytes of data:\n%s\n", (unsigned long)len, hex);
  73         }
  74
  75         const int *sock = handle;
  76         const char *p = data;
  77
  78         while(len) {
  79                 ssize_t sent = send(*sock, p, len, 0);
  80
  81                 if(sent <= 0) {
  82                         fprintf(stderr, "Error sending data: %s\n", strerror(errno));
  83                         return false;
  84                 }
  85
  86                 p += sent;
  87                 len -= sent;
  88         }
  89
  90         return true;
  91 }
  92
  93 static bool receive_record(void *handle, uint8_t type, const void *data, uint16_t len) {
  94         (void)handle;
  95
  96         if(verbose) {
  97                 fprintf(stderr, "Received type %d record of %u bytes:\n", type, len);
  98         }
  99
 100         if(writeonly) {
 101                 return true;
 102         }
 103
 104         const char *p = data;
 105
 106         while(len) {
 107                 ssize_t written = write(out, p, len);
 108
 109                 if(written <= 0) {
 110                         fprintf(stderr, "Error writing received data: %s\n", strerror(errno));
 111                         return false;
 112                 }
 113
 114                 p += written;
 115                 len -= written;
 116         }
 117
 118         return true;
 119 }
 120
 121 typedef enum option_t {
 122         OPT_BAD_OPTION    = '?',
 123         OPT_LONG_OPTION   =  0,
 124
 125         // Short options
 126         OPT_DATAGRAM      = 'd',
 127         OPT_QUIT_ON_EOF   = 'q',
 128         OPT_READONLY      = 'r',
 129         OPT_WRITEONLY     = 'w',
 130         OPT_PACKET_LOSS   = 'L',
 131         OPT_REPLAY_WINDOW = 'W',
 132         OPT_SPECIAL_CHAR  = 's',
 133         OPT_TUN           = 't',
 134         OPT_VERBOSE       = 'v',
 135         OPT_IPV4          = '4',
 136         OPT_IPV6          = '6',
 137
 138         // Long options
 139         OPT_HELP          = 255,
 140 } option_t;
 141
 142 static struct option const long_options[] = {
 143         {"datagram",      no_argument,       NULL, OPT_DATAGRAM},
 144         {"quit",          no_argument,       NULL, OPT_QUIT_ON_EOF},
 145         {"readonly",      no_argument,       NULL, OPT_READONLY},
 146         {"writeonly",     no_argument,       NULL, OPT_WRITEONLY},
 147         {"packet-loss",   required_argument, NULL, OPT_PACKET_LOSS},
 148         {"replay-window", required_argument, NULL, OPT_REPLAY_WINDOW},
 149         {"special",       no_argument,       NULL, OPT_SPECIAL_CHAR},
 150         {"tun",           no_argument,       NULL, OPT_TUN},
 151         {"verbose",       required_argument, NULL, OPT_VERBOSE},
 152         {"help",          no_argument,       NULL, OPT_HELP},
 153         {NULL,            0,                 NULL, 0}
 154 };
 155
 156 static void usage(void) {
 157         static const char *message =
 158                 "Usage: %s [options] my_ed25519_key_file his_ed25519_key_file [host] port\n"
 159                 "\n"
 160                 "Valid options are:\n"
 161                 "  -d, --datagram          Enable datagram mode.\n"
 162                 "  -q, --quit              Quit when EOF occurs on stdin.\n"
 163                 "  -r, --readonly          Only send data from the socket to stdout.\n"
 164 #ifdef HAVE_LINUX
 165                 "  -t, --tun               Use a tun device instead of stdio.\n"
 166 #endif
 167                 "  -w, --writeonly         Only send data from stdin to the socket.\n"
 168                 "  -L, --packet-loss RATE  Fake packet loss of RATE percent.\n"
 169                 "  -R, --replay-window N   Set replay window to N bytes.\n"
 170                 "  -s, --special           Enable special handling of lines starting with #, ^ and $.\n"
 171                 "  -v, --verbose           Display debug messages.\n"
 172                 "  -4                      Use IPv4.\n"
 173                 "  -6                      Use IPv6.\n"
 174                 "\n"
 175                 "Report bugs to tinc@tinc-vpn.org.\n";
 176
 177         fprintf(stderr, message, program_name);
 178 }
 179
 180 #ifdef HAVE_WINDOWS
 181
 182 int stdin_sock_fd = -1;
 183
 184 // Windows does not allow calling select() on anything but sockets. Therefore,
 185 // to keep the same code as on other operating systems, we have to put a
 186 // separate thread between the stdin and the sptps loop way below. This thread
 187 // reads stdin and sends its content to the main thread through a TCP socket,
 188 // which can be properly select()'ed.
 189 static DWORD WINAPI stdin_reader_thread(LPVOID arg) {
 190         struct sockaddr_in sa;
 191         socklen_t sa_size = sizeof(sa);
 192
 193         while(true) {
 194                 int peer_fd = accept(stdin_sock_fd, (struct sockaddr *) &sa, &sa_size);
 195
 196                 if(peer_fd < 0) {
 197                         fprintf(stderr, "accept() failed: %s\n", strerror(errno));
 198                         continue;
 199                 }
 200
 201                 if(verbose) {
 202                         fprintf(stderr, "New connection received from :%d\n", ntohs(sa.sin_port));
 203                 }
 204
 205                 char buf[1024];
 206                 ssize_t nread;
 207
 208                 while((nread = read(STDIN_FILENO, buf, sizeof(buf))) > 0) {
 209                         if(verbose) {
 210                                 fprintf(stderr, "Read %lld bytes from input\n", nread);
 211                         }
 212
 213                         char *start = buf;
 214                         ssize_t nleft = nread;
 215
 216                         while(nleft) {
 217                                 ssize_t nsend = send(peer_fd, start, nleft, 0);
 218
 219                                 if(nsend < 0) {
 220                                         if(sockwouldblock(sockerrno)) {
 221                                                 continue;
 222                                         }
 223
 224                                         break;
 225                                 }
 226
 227                                 start += nsend;
 228                                 nleft -= nsend;
 229                         }
 230
 231                         if(nleft) {
 232                                 fprintf(stderr, "Could not send data: %s\n", strerror(errno));
 233                                 break;
 234                         }
 235
 236                         if(verbose) {
 237                                 fprintf(stderr, "Sent %lld bytes to peer\n", nread);
 238                         }
 239                 }
 240
 241                 closesocket(peer_fd);
 242         }
 243
 244         closesocket(stdin_sock_fd);
 245         stdin_sock_fd = -1;
 246         return 0;
 247 }
 248
 249 static int start_input_reader(void) {
 250         if(stdin_sock_fd != -1) {
 251                 fprintf(stderr, "stdin thread can only be started once.\n");
 252                 return -1;
 253         }
 254
 255         stdin_sock_fd = socket(AF_INET, SOCK_STREAM, 0);
 256
 257         if(stdin_sock_fd < 0) {
 258                 fprintf(stderr, "Could not create server socket: %s\n", strerror(errno));
 259                 return -1;
 260         }
 261
 262         struct sockaddr_in serv_sa;
 263
 264         memset(&serv_sa, 0, sizeof(serv_sa));
 265
 266         serv_sa.sin_family = AF_INET;
 267
 268         serv_sa.sin_addr.s_addr = htonl(0x7f000001); // 127.0.0.1
 269
 270         int res = bind(stdin_sock_fd, (struct sockaddr *)&serv_sa, sizeof(serv_sa));
 271
 272         if(res < 0) {
 273                 fprintf(stderr, "Could not bind socket: %s\n", strerror(errno));
 274                 goto server_err;
 275         }
 276
 277         if(listen(stdin_sock_fd, 1) < 0) {
 278                 fprintf(stderr, "Could not listen: %s\n", strerror(errno));
 279                 goto server_err;
 280         }
 281
 282         struct sockaddr_in connect_sa;
 283
 284         socklen_t addr_len = sizeof(connect_sa);
 285
 286         if(getsockname(stdin_sock_fd, (struct sockaddr *)&connect_sa, &addr_len) < 0) {
 287                 fprintf(stderr, "Could not determine the address of the stdin thread socket\n");
 288                 goto server_err;
 289         }
 290
 291         if(verbose) {
 292                 fprintf(stderr, "stdin thread is listening on :%d\n", ntohs(connect_sa.sin_port));
 293         }
 294
 295         if(!CreateThread(NULL, 0, stdin_reader_thread, NULL, 0, NULL)) {
 296                 fprintf(stderr, "Could not start reader thread: %d\n", GetLastError());
 297                 goto server_err;
 298         }
 299
 300         int client_fd = socket(AF_INET, SOCK_STREAM, 0);
 301
 302         if(client_fd < 0) {
 303                 fprintf(stderr, "Could not create client socket: %s\n", strerror(errno));
 304                 return -1;
 305         }
 306
 307         if(connect(client_fd, (struct sockaddr *)&connect_sa, sizeof(connect_sa)) < 0) {
 308                 fprintf(stderr, "Could not connect: %s\n", strerror(errno));
 309                 closesocket(client_fd);
 310                 return -1;
 311         }
 312
 313         return client_fd;
 314
 315 server_err:
 316
 317         if(stdin_sock_fd != -1) {
 318                 closesocket(stdin_sock_fd);
 319                 stdin_sock_fd = -1;
 320         }
 321
 322         return -1;
 323 }
 324
 325 #endif // HAVE_WINDOWS
 326
 327 static void print_listening_msg(int sock) {
 328         sockaddr_t sa = {0};
 329         socklen_t salen = sizeof(sa);
 330         int port = 0;
 331
 332         if(!getsockname(sock, &sa.sa, &salen)) {
 333                 port = ntohs(sa.in.sin_port);
 334         }
 335
 336         fprintf(stderr, "Listening on %d...\n", port);
 337         fflush(stderr);
 338 }
 339
 340 static int run_test(int argc, char *argv[]) {
 341         program_name = argv[0];
 342         bool initiator = false;
 343         bool datagram = false;
 344 #ifdef HAVE_LINUX
 345         bool tun = false;
 346 #endif
 347         int packetloss = 0;
 348         int r;
 349         int option_index = 0;
 350         bool quit = false;
 351
 352         while((r = getopt_long(argc, argv, "dqrstwL:W:v46", long_options, &option_index)) != EOF) {
 353                 switch((option_t) r) {
 354                 case OPT_LONG_OPTION:
 355                         break;
 356
 357                 case OPT_BAD_OPTION:
 358                         usage();
 359                         return 1;
 360
 361                 case OPT_DATAGRAM:
 362                         datagram = true;
 363                         break;
 364
 365                 case OPT_QUIT_ON_EOF:
 366                         quit = true;
 367                         break;
 368
 369                 case OPT_READONLY:
 370                         readonly = true;
 371                         break;
 372
 373                 case OPT_TUN:
 374 #ifdef HAVE_LINUX
 375                         tun = true;
 376 #else
 377                         fprintf(stderr, "--tun is only supported on Linux.\n");
 378                         usage();
 379                         return 1;
 380 #endif
 381                         break;
 382
 383                 case OPT_WRITEONLY:
 384                         writeonly = true;
 385                         break;
 386
 387                 case OPT_PACKET_LOSS:
 388                         packetloss = atoi(optarg);
 389                         break;
 390
 391                 case OPT_REPLAY_WINDOW:
 392                         sptps_replaywin = atoi(optarg);
 393                         break;
 394
 395                 case OPT_VERBOSE:
 396                         verbose = true;
 397                         break;
 398
 399                 case OPT_SPECIAL_CHAR:
 400                         special = true;
 401                         break;
 402
 403                 case OPT_IPV4:
 404                         addressfamily = AF_INET;
 405                         break;
 406
 407                 case OPT_IPV6:
 408                         addressfamily = AF_INET6;
 409                         break;
 410
 411                 case OPT_HELP:
 412                         usage();
 413                         return 0;
 414
 415                 default:
 416                         break;
 417                 }
 418         }
 419
 420         argc -= optind - 1;
 421         argv += optind - 1;
 422
 423         if(argc < 4 || argc > 5) {
 424                 fprintf(stderr, "Wrong number of arguments.\n");
 425                 usage();
 426                 return 1;
 427         }
 428
 429         if(argc > 4) {
 430                 initiator = true;
 431         }
 432
 433 #ifdef HAVE_LINUX
 434
 435         if(tun) {
 436                 in = out = open("/dev/net/tun", O_RDWR | O_NONBLOCK);
 437
 438                 if(in < 0) {
 439                         fprintf(stderr, "Could not open tun device: %s\n", strerror(errno));
 440                         return 1;
 441                 }
 442
 443                 struct ifreq ifr = {
 444                         .ifr_flags = IFF_TUN
 445                 };
 446
 447                 if(ioctl(in, TUNSETIFF, &ifr)) {
 448                         fprintf(stderr, "Could not configure tun interface: %s\n", strerror(errno));
 449                         return 1;
 450                 }
 451
 452                 ifr.ifr_name[IFNAMSIZ - 1] = 0;
 453                 fprintf(stderr, "Using tun interface %s\n", ifr.ifr_name);
 454         }
 455
 456 #endif
 457
 458 #ifdef HAVE_WINDOWS
 459         static struct WSAData wsa_state;
 460
 461         if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
 462                 return 1;
 463         }
 464
 465 #endif
 466
 467         struct addrinfo *ai, hint;
 468         memset(&hint, 0, sizeof(hint));
 469
 470         hint.ai_family = addressfamily;
 471         hint.ai_socktype = datagram ? SOCK_DGRAM : SOCK_STREAM;
 472         hint.ai_protocol = datagram ? IPPROTO_UDP : IPPROTO_TCP;
 473         hint.ai_flags = initiator ? 0 : AI_PASSIVE;
 474
 475         if(getaddrinfo(initiator ? argv[3] : NULL, initiator ? argv[4] : argv[3], &hint, &ai) || !ai) {
 476                 fprintf(stderr, "getaddrinfo() failed: %s\n", sockstrerror(sockerrno));
 477                 return 1;
 478         }
 479
 480         int sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
 481
 482         if(sock < 0) {
 483                 fprintf(stderr, "Could not create socket: %s\n", sockstrerror(sockerrno));
 484                 freeaddrinfo(ai);
 485                 return 1;
 486         }
 487
 488         int one = 1;
 489         setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof(one));
 490
 491         if(initiator) {
 492                 int res = connect(sock, ai->ai_addr, ai->ai_addrlen);
 493
 494                 freeaddrinfo(ai);
 495                 ai = NULL;
 496
 497                 if(res) {
 498                         fprintf(stderr, "Could not connect to peer: %s\n", sockstrerror(sockerrno));
 499                         return 1;
 500                 }
 501
 502                 fprintf(stderr, "Connected\n");
 503         } else {
 504                 int res = bind(sock, ai->ai_addr, ai->ai_addrlen);
 505
 506                 freeaddrinfo(ai);
 507                 ai = NULL;
 508
 509                 if(res) {
 510                         fprintf(stderr, "Could not bind socket: %s\n", sockstrerror(sockerrno));
 511                         return 1;
 512                 }
 513
 514                 if(!datagram) {
 515                         if(listen(sock, 1)) {
 516                                 fprintf(stderr, "Could not listen on socket: %s\n", sockstrerror(sockerrno));
 517                                 return 1;
 518                         }
 519
 520                         print_listening_msg(sock);
 521
 522                         sock = accept(sock, NULL, NULL);
 523
 524                         if(sock < 0) {
 525                                 fprintf(stderr, "Could not accept connection: %s\n", sockstrerror(sockerrno));
 526                                 return 1;
 527                         }
 528                 } else {
 529                         print_listening_msg(sock);
 530
 531                         char buf[65536];
 532                         struct sockaddr addr;
 533                         socklen_t addrlen = sizeof(addr);
 534
 535                         if(recvfrom(sock, buf, sizeof(buf), MSG_PEEK, &addr, &addrlen) <= 0) {
 536                                 fprintf(stderr, "Could not read from socket: %s\n", sockstrerror(sockerrno));
 537                                 return 1;
 538                         }
 539
 540                         if(connect(sock, &addr, addrlen)) {
 541                                 fprintf(stderr, "Could not accept connection: %s\n", sockstrerror(sockerrno));
 542                                 return 1;
 543                         }
 544                 }
 545
 546                 fprintf(stderr, "Connected\n");
 547         }
 548
 549         FILE *fp = fopen(argv[1], "r");
 550
 551         if(!fp) {
 552                 fprintf(stderr, "Could not open %s: %s\n", argv[1], strerror(errno));
 553                 return 1;
 554         }
 555
 556         ecdsa_t *mykey = NULL;
 557
 558         if(!(mykey = ecdsa_read_pem_private_key(fp))) {
 559                 return 1;
 560         }
 561
 562         fclose(fp);
 563
 564         fp = fopen(argv[2], "r");
 565
 566         if(!fp) {
 567                 fprintf(stderr, "Could not open %s: %s\n", argv[2], strerror(errno));
 568                 ecdsa_free(mykey);
 569                 return 1;
 570         }
 571
 572         ecdsa_t *hiskey = NULL;
 573
 574         if(!(hiskey = ecdsa_read_pem_public_key(fp))) {
 575                 ecdsa_free(mykey);
 576                 return 1;
 577         }
 578
 579         fclose(fp);
 580
 581         if(verbose) {
 582                 fprintf(stderr, "Keys loaded\n");
 583         }
 584
 585         sptps_t s;
 586
 587         if(!sptps_start(&s, &sock, initiator, datagram, mykey, hiskey, "sptps_test", 10, send_data, receive_record)) {
 588                 ecdsa_free(mykey);
 589                 ecdsa_free(hiskey);
 590                 return 1;
 591         }
 592
 593 #ifdef HAVE_WINDOWS
 594
 595         if(!readonly) {
 596                 in = start_input_reader();
 597
 598                 if(in < 0) {
 599                         fprintf(stderr, "Could not init stdin reader thread\n");
 600                         ecdsa_free(mykey);
 601                         ecdsa_free(hiskey);
 602                         return 1;
 603                 }
 604         }
 605
 606 #endif
 607
 608         int max_fd = MAX(sock, in);
 609
 610         while(true) {
 611                 if(writeonly && readonly) {
 612                         break;
 613                 }
 614
 615                 char buf[65535] = "";
 616                 size_t readsize = datagram ? 1460u : sizeof(buf);
 617
 618                 fd_set fds;
 619                 FD_ZERO(&fds);
 620
 621                 if(!readonly && s.instate) {
 622                         FD_SET(in, &fds);
 623                 }
 624
 625                 FD_SET(sock, &fds);
 626
 627                 if(select(max_fd + 1, &fds, NULL, NULL, NULL) <= 0) {
 628                         ecdsa_free(mykey);
 629                         ecdsa_free(hiskey);
 630                         return 1;
 631                 }
 632
 633                 if(FD_ISSET(in, &fds)) {
 634 #ifdef HAVE_WINDOWS
 635                         ssize_t len = recv(in, buf, readsize, 0);
 636 #else
 637                         ssize_t len = read(in, buf, readsize);
 638 #endif
 639
 640                         if(len < 0) {
 641                                 fprintf(stderr, "Could not read from stdin: %s\n", strerror(errno));
 642                                 ecdsa_free(mykey);
 643                                 ecdsa_free(hiskey);
 644                                 return 1;
 645                         }
 646
 647                         if(len == 0) {
 648 #ifdef HAVE_WINDOWS
 649                                 shutdown(in, SD_SEND);
 650                                 closesocket(in);
 651 #endif
 652
 653                                 if(quit) {
 654                                         break;
 655                                 }
 656
 657                                 readonly = true;
 658                                 continue;
 659                         }
 660
 661                         if(special && buf[0] == '#') {
 662                                 s.outseqno = atoi(buf + 1);
 663                         }
 664
 665                         if(special && buf[0] == '^') {
 666                                 sptps_send_record(&s, SPTPS_HANDSHAKE, NULL, 0);
 667                         } else if(special && buf[0] == '$') {
 668                                 sptps_force_kex(&s);
 669
 670                                 if(len > 1) {
 671                                         sptps_send_record(&s, 0, buf, len);
 672                                 }
 673                         } else if(!sptps_send_record(&s, buf[0] == '!' ? 1 : 0, buf, (len == 1 && buf[0] == '\n') ? 0 : buf[0] == '*' ? sizeof(buf) : (size_t)len)) {
 674                                 ecdsa_free(mykey);
 675                                 ecdsa_free(hiskey);
 676                                 return 1;
 677                         }
 678                 }
 679
 680                 if(FD_ISSET(sock, &fds)) {
 681                         ssize_t len = recv(sock, buf, sizeof(buf), 0);
 682
 683                         if(len < 0) {
 684                                 fprintf(stderr, "Could not read from socket: %s\n", sockstrerror(sockerrno));
 685                                 ecdsa_free(mykey);
 686                                 ecdsa_free(hiskey);
 687                                 return 1;
 688                         }
 689
 690                         if(len == 0) {
 691                                 fprintf(stderr, "Connection terminated by peer.\n");
 692                                 break;
 693                         }
 694
 695                         if(verbose) {
 696                                 char *hex = alloca(len * 2 + 1);
 697                                 bin2hex(buf, hex, len);
 698                                 fprintf(stderr, "Received %ld bytes of data:\n%s\n", (long)len, hex);
 699                         }
 700
 701                         if(packetloss && (int)prng(100) < packetloss) {
 702                                 if(verbose) {
 703                                         fprintf(stderr, "Dropped.\n");
 704                                 }
 705
 706                                 continue;
 707                         }
 708
 709                         char *bufp = buf;
 710
 711                         while(len) {
 712                                 size_t done = sptps_receive_data(&s, bufp, len);
 713
 714                                 if(!done) {
 715                                         if(!datagram) {
 716                                                 ecdsa_free(mykey);
 717                                                 ecdsa_free(hiskey);
 718                                                 return 1;
 719                                         }
 720                                 }
 721
 722                                 bufp += done;
 723                                 len -= (ssize_t) done;
 724                         }
 725                 }
 726         }
 727
 728         bool stopped = sptps_stop(&s);
 729
 730         ecdsa_free(mykey);
 731         ecdsa_free(hiskey);
 732         closesocket(sock);
 733
 734         return !stopped;
 735 }
 736
 737 int main(int argc, char *argv[]) {
 738         random_init();
 739         crypto_init();
 740         prng_init();
 741
 742         int result = run_test(argc, argv);
 743
 744         random_exit();
 745
 746         return result;
 747 }