git.tinc-vpn.org Git - tinc/blob - src/tincd.c

   1 /*
   2     tincd.c -- the main file for tincd
   3     Copyright (C) 1998-2005 Ivo Timmermans
   4                   2000-2013 Guus Sliepen <guus@tinc-vpn.org>
   5                   2008      Max Rijevski <maksuf@gmail.com>
   6                   2009      Michael Tokarev <mjt@tls.msk.ru>
   7                   2010      Julien Muchembled <jm@jmuchemb.eu>
   8                   2010      Timothy Redaelli <timothy@redaelli.eu>
   9
  10     This program is free software; you can redistribute it and/or modify
  11     it under the terms of the GNU General Public License as published by
  12     the Free Software Foundation; either version 2 of the License, or
  13     (at your option) any later version.
  14
  15     This program is distributed in the hope that it will be useful,
  16     but WITHOUT ANY WARRANTY; without even the implied warranty of
  17     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18     GNU General Public License for more details.
  19
  20     You should have received a copy of the GNU General Public License along
  21     with this program; if not, write to the Free Software Foundation, Inc.,
  22     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  23 */
  24
  25 #include "system.h"
  26
  27 /* Darwin (MacOS/X) needs the following definition... */
  28 #ifndef _P1003_1B_VISIBLE
  29 #define _P1003_1B_VISIBLE
  30 #endif
  31
  32 #ifdef HAVE_SYS_MMAN_H
  33 #include <sys/mman.h>
  34 #endif
  35
  36 #include <openssl/rand.h>
  37 #include <openssl/rsa.h>
  38 #include <openssl/pem.h>
  39 #include <openssl/evp.h>
  40 #include <openssl/engine.h>
  41
  42 #ifdef HAVE_LZO
  43 #include LZO1X_H
  44 #endif
  45
  46 #ifndef HAVE_MINGW
  47 #include <pwd.h>
  48 #include <grp.h>
  49 #include <time.h>
  50 #endif
  51
  52 #include <getopt.h>
  53 #include "pidfile.h"
  54
  55 #include "conf.h"
  56 #include "device.h"
  57 #include "logger.h"
  58 #include "net.h"
  59 #include "netutl.h"
  60 #include "process.h"
  61 #include "protocol.h"
  62 #include "utils.h"
  63 #include "xalloc.h"
  64
  65 /* The name this program was run with. */
  66 char *program_name = NULL;
  67
  68 /* If nonzero, display usage information and exit. */
  69 bool show_help = false;
  70
  71 /* If nonzero, print the version on standard output and exit.  */
  72 bool show_version = false;
  73
  74 /* If nonzero, it will attempt to kill a running tincd and exit. */
  75 int kill_tincd = 0;
  76
  77 /* If nonzero, generate public/private keypair for this host/net. */
  78 int generate_keys = 0;
  79
  80 /* If nonzero, use null ciphers and skip all key exchanges. */
  81 bool bypass_security = false;
  82
  83 /* If nonzero, disable swapping for this process. */
  84 bool do_mlock = false;
  85
  86 /* If nonzero, chroot to netdir after startup. */
  87 static bool do_chroot = false;
  88
  89 /* If !NULL, do setuid to given user after startup */
  90 static const char *switchuser = NULL;
  91
  92 /* If nonzero, write log entries to a separate file. */
  93 bool use_logfile = false;
  94
  95 char *identname = NULL;                         /* program name for syslog */
  96 char *pidfilename = NULL;                       /* pid file location */
  97 char *logfilename = NULL;                       /* log file location */
  98 char **g_argv;                                  /* a copy of the cmdline arguments */
  99
 100 static int status;
 101
 102 static struct option const long_options[] = {
 103         {"config", required_argument, NULL, 'c'},
 104         {"kill", optional_argument, NULL, 'k'},
 105         {"net", required_argument, NULL, 'n'},
 106         {"help", no_argument, NULL, 1},
 107         {"version", no_argument, NULL, 2},
 108         {"no-detach", no_argument, NULL, 'D'},
 109         {"generate-keys", optional_argument, NULL, 'K'},
 110         {"debug", optional_argument, NULL, 'd'},
 111         {"bypass-security", no_argument, NULL, 3},
 112         {"mlock", no_argument, NULL, 'L'},
 113         {"chroot", no_argument, NULL, 'R'},
 114         {"user", required_argument, NULL, 'U'},
 115         {"logfile", optional_argument, NULL, 4},
 116         {"pidfile", required_argument, NULL, 5},
 117         {"option", required_argument, NULL, 'o'},
 118         {NULL, 0, NULL, 0}
 119 };
 120
 121 #ifdef HAVE_MINGW
 122 static struct WSAData wsa_state;
 123 CRITICAL_SECTION mutex;
 124 int main2(int argc, char **argv);
 125 #endif
 126
 127 static void usage(bool status) {
 128         if(status)
 129                 fprintf(stderr, "Try `%s --help\' for more information.\n",
 130                                 program_name);
 131         else {
 132                 printf("Usage: %s [option]...\n\n", program_name);
 133                 printf("  -c, --config=DIR               Read configuration options from DIR.\n"
 134                                 "  -D, --no-detach                Don't fork and detach.\n"
 135                                 "  -d, --debug[=LEVEL]            Increase debug level or set it to LEVEL.\n"
 136                                 "  -k, --kill[=SIGNAL]            Attempt to kill a running tincd and exit.\n"
 137                                 "  -n, --net=NETNAME              Connect to net NETNAME.\n"
 138                                 "  -K, --generate-keys[=BITS]     Generate public/private RSA keypair.\n"
 139                                 "  -L, --mlock                    Lock tinc into main memory.\n"
 140                                 "      --logfile[=FILENAME]       Write log entries to a logfile.\n"
 141                                 "      --pidfile=FILENAME         Write PID to FILENAME.\n"
 142                                 "  -o, --option=[HOST.]KEY=VALUE  Set global/host configuration value.\n"
 143                                 "  -R, --chroot                   chroot to NET dir at startup.\n"
 144                                 "  -U, --user=USER                setuid to given USER at startup.\n"
 145                                 "      --help                     Display this help and exit.\n"
 146                                 "      --version                  Output version information and exit.\n\n");
 147                 printf("Report bugs to tinc@tinc-vpn.org.\n");
 148         }
 149 }
 150
 151 static bool parse_options(int argc, char **argv) {
 152         config_t *cfg;
 153         int r;
 154         int option_index = 0;
 155         int lineno = 0;
 156
 157         cmdline_conf = list_alloc((list_action_t)free_config);
 158
 159         while((r = getopt_long(argc, argv, "c:DLd::k::n:o:K::RU:", long_options, &option_index)) != EOF) {
 160                 switch (r) {
 161                         case 0:                         /* long option */
 162                                 break;
 163
 164                         case 'c':                               /* config file */
 165                                 if(confbase) {
 166                                         fprintf(stderr, "Only one configuration directory can be given.\n");
 167                                         usage(true);
 168                                         return false;
 169                                 }
 170                                 confbase = xstrdup(optarg);
 171                                 break;
 172
 173                         case 'D':                               /* no detach */
 174                                 do_detach = false;
 175                                 break;
 176
 177                         case 'L':                               /* no detach */
 178 #ifndef HAVE_MLOCKALL
 179                                 logger(LOG_ERR, "%s not supported on this platform", "mlockall()");
 180                                 return false;
 181 #else
 182                                 do_mlock = true;
 183                                 break;
 184 #endif
 185
 186                         case 'd':                               /* increase debug level */
 187                                 if(!optarg && optind < argc && *argv[optind] != '-')
 188                                         optarg = argv[optind++];
 189                                 if(optarg)
 190                                         debug_level = atoi(optarg);
 191                                 else
 192                                         debug_level++;
 193                                 break;
 194
 195                         case 'k':                               /* kill old tincds */
 196 #ifndef HAVE_MINGW
 197                                 if(!optarg && optind < argc && *argv[optind] != '-')
 198                                         optarg = argv[optind++];
 199                                 if(optarg) {
 200                                         if(!strcasecmp(optarg, "HUP"))
 201                                                 kill_tincd = SIGHUP;
 202                                         else if(!strcasecmp(optarg, "TERM"))
 203                                                 kill_tincd = SIGTERM;
 204                                         else if(!strcasecmp(optarg, "KILL"))
 205                                                 kill_tincd = SIGKILL;
 206                                         else if(!strcasecmp(optarg, "USR1"))
 207                                                 kill_tincd = SIGUSR1;
 208                                         else if(!strcasecmp(optarg, "USR2"))
 209                                                 kill_tincd = SIGUSR2;
 210                                         else if(!strcasecmp(optarg, "WINCH"))
 211                                                 kill_tincd = SIGWINCH;
 212                                         else if(!strcasecmp(optarg, "INT"))
 213                                                 kill_tincd = SIGINT;
 214                                         else if(!strcasecmp(optarg, "ALRM"))
 215                                                 kill_tincd = SIGALRM;
 216                                         else if(!strcasecmp(optarg, "ABRT"))
 217                                                 kill_tincd = SIGABRT;
 218                                         else {
 219                                                 kill_tincd = atoi(optarg);
 220
 221                                                 if(!kill_tincd) {
 222                                                         fprintf(stderr, "Invalid argument `%s'; SIGNAL must be a number or one of HUP, TERM, KILL, USR1, USR2, WINCH, INT or ALRM.\n",
 223                                                                         optarg);
 224                                                         usage(true);
 225                                                         return false;
 226                                                 }
 227                                         }
 228                                 } else
 229                                         kill_tincd = SIGTERM;
 230 #else
 231                                         kill_tincd = 1;
 232 #endif
 233                                 break;
 234
 235                         case 'n':                               /* net name given */
 236                                 /* netname "." is special: a "top-level name" */
 237                                 if(netname) {
 238                                         fprintf(stderr, "Only one netname can be given.\n");
 239                                         usage(true);
 240                                         return false;
 241                                 }
 242                                 netname = strcmp(optarg, ".") != 0 ? xstrdup(optarg) : NULL;
 243                                 break;
 244
 245                         case 'o':                               /* option */
 246                                 cfg = parse_config_line(optarg, NULL, ++lineno);
 247                                 if (!cfg)
 248                                         return false;
 249                                 list_insert_tail(cmdline_conf, cfg);
 250                                 break;
 251
 252                         case 'K':                               /* generate public/private keypair */
 253                                 if(!optarg && optind < argc && *argv[optind] != '-')
 254                                         optarg = argv[optind++];
 255                                 if(optarg) {
 256                                         generate_keys = atoi(optarg);
 257
 258                                         if(generate_keys < 512) {
 259                                                 fprintf(stderr, "Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n",
 260                                                                 optarg);
 261                                                 usage(true);
 262                                                 return false;
 263                                         }
 264
 265                                         generate_keys &= ~7;    /* Round it to bytes */
 266                                 } else
 267                                         generate_keys = 2048;
 268                                 break;
 269
 270                         case 'R':                               /* chroot to NETNAME dir */
 271                                 do_chroot = true;
 272                                 break;
 273
 274                         case 'U':                               /* setuid to USER */
 275                                 switchuser = optarg;
 276                                 break;
 277
 278                         case 1:                                 /* show help */
 279                                 show_help = true;
 280                                 break;
 281
 282                         case 2:                                 /* show version */
 283                                 show_version = true;
 284                                 break;
 285
 286                         case 3:                                 /* bypass security */
 287                                 bypass_security = true;
 288                                 break;
 289
 290                         case 4:                                 /* write log entries to a file */
 291                                 use_logfile = true;
 292                                 if(!optarg && optind < argc && *argv[optind] != '-')
 293                                         optarg = argv[optind++];
 294                                 if(optarg) {
 295                                         if(logfilename) {
 296                                                 fprintf(stderr, "Only one logfile can be given.\n");
 297                                                 usage(true);
 298                                                 return false;
 299                                         }
 300                                         logfilename = xstrdup(optarg);
 301                                 }
 302                                 break;
 303
 304                         case 5:                                 /* write PID to a file */
 305                                 if(pidfilename) {
 306                                         fprintf(stderr, "Only one pidfile can be given.\n");
 307                                         usage(true);
 308                                         return false;
 309                                 }
 310                                 pidfilename = xstrdup(optarg);
 311                                 break;
 312
 313                         case '?':
 314                                 usage(true);
 315                                 return false;
 316
 317                         default:
 318                                 break;
 319                 }
 320         }
 321
 322         if(optind < argc) {
 323                 fprintf(stderr, "%s: unrecognized argument '%s'\n", argv[0], argv[optind]);
 324                 usage(true);
 325                 return false;
 326         }
 327
 328         return true;
 329 }
 330
 331 /* This function prettyprints the key generation process */
 332
 333 static void indicator(int a, int b, void *p) {
 334         switch (a) {
 335                 case 0:
 336                         fprintf(stderr, ".");
 337                         break;
 338
 339                 case 1:
 340                         fprintf(stderr, "+");
 341                         break;
 342
 343                 case 2:
 344                         fprintf(stderr, "-");
 345                         break;
 346
 347                 case 3:
 348                         switch (b) {
 349                                 case 0:
 350                                         fprintf(stderr, " p\n");
 351                                         break;
 352
 353                                 case 1:
 354                                         fprintf(stderr, " q\n");
 355                                         break;
 356
 357                                 default:
 358                                         fprintf(stderr, "?");
 359                         }
 360                         break;
 361
 362                 default:
 363                         fprintf(stderr, "?");
 364         }
 365 }
 366
 367 /*
 368   Generate a public/private RSA keypair, and ask for a file to store
 369   them in.
 370 */
 371 static bool keygen(int bits) {
 372         RSA *rsa_key;
 373         FILE *f;
 374         char *pubname, *privname;
 375
 376         fprintf(stderr, "Generating %d bits keys:\n", bits);
 377         rsa_key = RSA_generate_key(bits, 0x10001, indicator, NULL);
 378
 379         if(!rsa_key) {
 380                 fprintf(stderr, "Error during key generation!\n");
 381                 return false;
 382         } else
 383                 fprintf(stderr, "Done.\n");
 384
 385         xasprintf(&privname, "%s/rsa_key.priv", confbase);
 386         f = ask_and_open(privname, "private RSA key");
 387         free(privname);
 388
 389         if(!f)
 390                 return false;
 391
 392 #ifdef HAVE_FCHMOD
 393         /* Make it unreadable for others. */
 394         fchmod(fileno(f), 0600);
 395 #endif
 396
 397         fputc('\n', f);
 398         PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
 399         fclose(f);
 400
 401         char *name = get_name();
 402
 403         if(name) {
 404                 xasprintf(&pubname, "%s/hosts/%s", confbase, name);
 405                 free(name);
 406         } else {
 407                 xasprintf(&pubname, "%s/rsa_key.pub", confbase);
 408         }
 409
 410         f = ask_and_open(pubname, "public RSA key");
 411         free(pubname);
 412
 413         if(!f)
 414                 return false;
 415
 416         fputc('\n', f);
 417         PEM_write_RSAPublicKey(f, rsa_key);
 418         fclose(f);
 419
 420         return true;
 421 }
 422
 423 /*
 424   Set all files and paths according to netname
 425 */
 426 static void make_names(void) {
 427 #ifdef HAVE_MINGW
 428         HKEY key;
 429         char installdir[1024] = "";
 430         DWORD len = sizeof(installdir);
 431 #endif
 432
 433         if(netname)
 434                 xasprintf(&identname, "tinc.%s", netname);
 435         else
 436                 identname = xstrdup("tinc");
 437
 438 #ifdef HAVE_MINGW
 439         if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
 440                 if(!RegQueryValueEx(key, NULL, 0, 0, (LPBYTE)installdir, &len)) {
 441                         if(!logfilename)
 442                                 xasprintf(&logfilename, "%s/log/%s.log", identname);
 443                         if(!confbase) {
 444                                 if(netname)
 445                                         xasprintf(&confbase, "%s/%s", installdir, netname);
 446                                 else
 447                                         xasprintf(&confbase, "%s", installdir);
 448                         }
 449                 }
 450                 RegCloseKey(key);
 451                 if(*installdir)
 452                         return;
 453         }
 454 #endif
 455
 456         if(!pidfilename)
 457                 xasprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname);
 458
 459         if(!logfilename)
 460                 xasprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname);
 461
 462         if(netname) {
 463                 if(!confbase)
 464                         xasprintf(&confbase, CONFDIR "/tinc/%s", netname);
 465                 else
 466                         logger(LOG_INFO, "Both netname and configuration directory given, using the latter...");
 467         } else {
 468                 if(!confbase)
 469                         xasprintf(&confbase, CONFDIR "/tinc");
 470         }
 471 }
 472
 473 static void free_names() {
 474         if (identname) free(identname);
 475         if (netname) free(netname);
 476         if (pidfilename) free(pidfilename);
 477         if (logfilename) free(logfilename);
 478         if (confbase) free(confbase);
 479 }
 480
 481 static bool drop_privs() {
 482 #ifdef HAVE_MINGW
 483         if (switchuser) {
 484                 logger(LOG_ERR, "%s not supported on this platform", "-U");
 485                 return false;
 486         }
 487         if (do_chroot) {
 488                 logger(LOG_ERR, "%s not supported on this platform", "-R");
 489                 return false;
 490         }
 491 #else
 492         uid_t uid = 0;
 493         if (switchuser) {
 494                 struct passwd *pw = getpwnam(switchuser);
 495                 if (!pw) {
 496                         logger(LOG_ERR, "unknown user `%s'", switchuser);
 497                         return false;
 498                 }
 499                 uid = pw->pw_uid;
 500                 if (initgroups(switchuser, pw->pw_gid) != 0 ||
 501                     setgid(pw->pw_gid) != 0) {
 502                         logger(LOG_ERR, "System call `%s' failed: %s",
 503                                "initgroups", strerror(errno));
 504                         return false;
 505                 }
 506 #ifndef __ANDROID__
 507 // Not supported in android NDK
 508                 endgrent();
 509                 endpwent();
 510 #endif
 511         }
 512         if (do_chroot) {
 513                 tzset();        /* for proper timestamps in logs */
 514                 if (chroot(confbase) != 0 || chdir("/") != 0) {
 515                         logger(LOG_ERR, "System call `%s' failed: %s",
 516                                "chroot", strerror(errno));
 517                         return false;
 518                 }
 519                 free(confbase);
 520                 confbase = xstrdup("");
 521         }
 522         if (switchuser)
 523                 if (setuid(uid) != 0) {
 524                         logger(LOG_ERR, "System call `%s' failed: %s",
 525                                "setuid", strerror(errno));
 526                         return false;
 527                 }
 528 #endif
 529         return true;
 530 }
 531
 532 #ifdef HAVE_MINGW
 533 # define setpriority(level) !SetPriorityClass(GetCurrentProcess(), (level))
 534 #else
 535 # define NORMAL_PRIORITY_CLASS 0
 536 # define BELOW_NORMAL_PRIORITY_CLASS 10
 537 # define HIGH_PRIORITY_CLASS -10
 538 # define setpriority(level) (setpriority(PRIO_PROCESS, 0, (level)))
 539 #endif
 540
 541 int main(int argc, char **argv) {
 542         program_name = argv[0];
 543
 544         if(!parse_options(argc, argv))
 545                 return 1;
 546
 547         make_names();
 548
 549         if(show_version) {
 550                 printf("%s version %s (built %s %s, protocol %d)\n", PACKAGE,
 551                            VERSION, __DATE__, __TIME__, PROT_CURRENT);
 552                 printf("Copyright (C) 1998-2013 Ivo Timmermans, Guus Sliepen and others.\n"
 553                                 "See the AUTHORS file for a complete list.\n\n"
 554                                 "tinc comes with ABSOLUTELY NO WARRANTY.  This is free software,\n"
 555                                 "and you are welcome to redistribute it under certain conditions;\n"
 556                                 "see the file COPYING for details.\n");
 557
 558                 return 0;
 559         }
 560
 561         if(show_help) {
 562                 usage(false);
 563                 return 0;
 564         }
 565
 566         if(kill_tincd)
 567                 return !kill_other(kill_tincd);
 568
 569         openlogger("tinc", use_logfile?LOGMODE_FILE:LOGMODE_STDERR);
 570
 571         g_argv = argv;
 572
 573         if(getenv("LISTEN_PID") && atoi(getenv("LISTEN_PID")) == getpid())
 574                 do_detach = false;
 575 #ifdef HAVE_UNSETENV
 576         unsetenv("LISTEN_PID");
 577 #endif
 578
 579         init_configuration(&config_tree);
 580
 581         /* Slllluuuuuuurrrrp! */
 582
 583         RAND_load_file("/dev/urandom", 1024);
 584
 585         ENGINE_load_builtin_engines();
 586         ENGINE_register_all_complete();
 587
 588         OpenSSL_add_all_algorithms();
 589
 590         if(generate_keys) {
 591                 read_server_config();
 592                 return !keygen(generate_keys);
 593         }
 594
 595         if(!read_server_config())
 596                 return 1;
 597
 598 #ifdef HAVE_LZO
 599         if(lzo_init() != LZO_E_OK) {
 600                 logger(LOG_ERR, "Error initializing LZO compressor!");
 601                 return 1;
 602         }
 603 #endif
 604
 605 #ifdef HAVE_MINGW
 606         if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
 607                 logger(LOG_ERR, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
 608                 return 1;
 609         }
 610
 611         if(!do_detach || !init_service())
 612                 return main2(argc, argv);
 613         else
 614                 return 1;
 615 }
 616
 617 int main2(int argc, char **argv) {
 618         InitializeCriticalSection(&mutex);
 619         EnterCriticalSection(&mutex);
 620 #endif
 621         char *priority = NULL;
 622
 623         if(!detach())
 624                 return 1;
 625
 626 #ifdef HAVE_MLOCKALL
 627         /* Lock all pages into memory if requested.
 628          * This has to be done after daemon()/fork() so it works for child.
 629          * No need to do that in parent as it's very short-lived. */
 630         if(do_mlock && mlockall(MCL_CURRENT | MCL_FUTURE) != 0) {
 631                 logger(LOG_ERR, "System call `%s' failed: %s", "mlockall",
 632                    strerror(errno));
 633                 return 1;
 634         }
 635 #endif
 636
 637         /* Setup sockets and open device. */
 638
 639         if(!setup_network())
 640                 goto end;
 641
 642         /* Initiate all outgoing connections. */
 643
 644         try_outgoing_connections();
 645
 646         /* Change process priority */
 647
 648         if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) {
 649                 if(!strcasecmp(priority, "Normal")) {
 650                         if (setpriority(NORMAL_PRIORITY_CLASS) != 0) {
 651                                 logger(LOG_ERR, "System call `%s' failed: %s",
 652                                        "setpriority", strerror(errno));
 653                                 goto end;
 654                         }
 655                 } else if(!strcasecmp(priority, "Low")) {
 656                         if (setpriority(BELOW_NORMAL_PRIORITY_CLASS) != 0) {
 657                                        logger(LOG_ERR, "System call `%s' failed: %s",
 658                                        "setpriority", strerror(errno));
 659                                 goto end;
 660                         }
 661                 } else if(!strcasecmp(priority, "High")) {
 662                         if (setpriority(HIGH_PRIORITY_CLASS) != 0) {
 663                                 logger(LOG_ERR, "System call `%s' failed: %s",
 664                                        "setpriority", strerror(errno));
 665                                 goto end;
 666                         }
 667                 } else {
 668                         logger(LOG_ERR, "Invalid priority `%s`!", priority);
 669                         goto end;
 670                 }
 671         }
 672
 673         /* drop privileges */
 674         if (!drop_privs())
 675                 goto end;
 676
 677         /* Start main loop. It only exits when tinc is killed. */
 678
 679         status = main_loop();
 680
 681         /* Shutdown properly. */
 682
 683         ifdebug(CONNECTIONS)
 684                 devops.dump_stats();
 685
 686         close_network_connections();
 687
 688 end:
 689         logger(LOG_NOTICE, "Terminating");
 690
 691 #ifndef HAVE_MINGW
 692         remove_pid(pidfilename);
 693 #endif
 694
 695         free(priority);
 696
 697         EVP_cleanup();
 698         ENGINE_cleanup();
 699         CRYPTO_cleanup_all_ex_data();
 700         ERR_remove_state(0);
 701         ERR_free_strings();
 702
 703         exit_configuration(&config_tree);
 704         list_free(cmdline_conf);
 705         free_names();
 706
 707         return status;
 708 }