www.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                   2000-2015 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 = 1;
 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                                 if(optarg && strcmp(optarg, "."))
 243                                         netname = xstrdup(optarg);
 244                                 break;
 245
 246                         case 'o':                               /* option */
 247                                 cfg = parse_config_line(optarg, NULL, ++lineno);
 248                                 if (!cfg)
 249                                         return false;
 250                                 list_insert_tail(cmdline_conf, cfg);
 251                                 break;
 252
 253                         case 'K':                               /* generate public/private keypair */
 254                                 if(!optarg && optind < argc && *argv[optind] != '-')
 255                                         optarg = argv[optind++];
 256                                 if(optarg) {
 257                                         generate_keys = atoi(optarg);
 258
 259                                         if(generate_keys < 512) {
 260                                                 fprintf(stderr, "Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n",
 261                                                                 optarg);
 262                                                 usage(true);
 263                                                 return false;
 264                                         }
 265
 266                                         generate_keys &= ~7;    /* Round it to bytes */
 267                                 } else
 268                                         generate_keys = 2048;
 269                                 break;
 270
 271                         case 'R':                               /* chroot to NETNAME dir */
 272                                 do_chroot = true;
 273                                 break;
 274
 275                         case 'U':                               /* setuid to USER */
 276                                 switchuser = optarg;
 277                                 break;
 278
 279                         case 1:                                 /* show help */
 280                                 show_help = true;
 281                                 break;
 282
 283                         case 2:                                 /* show version */
 284                                 show_version = true;
 285                                 break;
 286
 287                         case 3:                                 /* bypass security */
 288                                 bypass_security = true;
 289                                 break;
 290
 291                         case 4:                                 /* write log entries to a file */
 292                                 use_logfile = true;
 293                                 if(!optarg && optind < argc && *argv[optind] != '-')
 294                                         optarg = argv[optind++];
 295                                 if(optarg) {
 296                                         if(logfilename) {
 297                                                 fprintf(stderr, "Only one logfile can be given.\n");
 298                                                 usage(true);
 299                                                 return false;
 300                                         }
 301                                         logfilename = xstrdup(optarg);
 302                                 }
 303                                 break;
 304
 305                         case 5:                                 /* write PID to a file */
 306                                 if(pidfilename) {
 307                                         fprintf(stderr, "Only one pidfile can be given.\n");
 308                                         usage(true);
 309                                         return false;
 310                                 }
 311                                 pidfilename = xstrdup(optarg);
 312                                 break;
 313
 314                         case '?':
 315                                 usage(true);
 316                                 return false;
 317
 318                         default:
 319                                 break;
 320                 }
 321         }
 322
 323         if(optind < argc) {
 324                 fprintf(stderr, "%s: unrecognized argument '%s'\n", argv[0], argv[optind]);
 325                 usage(true);
 326                 return false;
 327         }
 328
 329         return true;
 330 }
 331
 332 /* This function prettyprints the key generation process */
 333
 334 static void indicator(int a, int b, void *p) {
 335         switch (a) {
 336                 case 0:
 337                         fprintf(stderr, ".");
 338                         break;
 339
 340                 case 1:
 341                         fprintf(stderr, "+");
 342                         break;
 343
 344                 case 2:
 345                         fprintf(stderr, "-");
 346                         break;
 347
 348                 case 3:
 349                         switch (b) {
 350                                 case 0:
 351                                         fprintf(stderr, " p\n");
 352                                         break;
 353
 354                                 case 1:
 355                                         fprintf(stderr, " q\n");
 356                                         break;
 357
 358                                 default:
 359                                         fprintf(stderr, "?");
 360                         }
 361                         break;
 362
 363                 default:
 364                         fprintf(stderr, "?");
 365         }
 366 }
 367
 368 /*
 369   Generate a public/private RSA keypair, and ask for a file to store
 370   them in.
 371 */
 372 static bool keygen(int bits) {
 373         RSA *rsa_key;
 374         FILE *f;
 375         char *pubname, *privname;
 376
 377         fprintf(stderr, "Generating %d bits keys:\n", bits);
 378         rsa_key = RSA_generate_key(bits, 0x10001, indicator, NULL);
 379
 380         if(!rsa_key) {
 381                 fprintf(stderr, "Error during key generation!\n");
 382                 return false;
 383         } else
 384                 fprintf(stderr, "Done.\n");
 385
 386         xasprintf(&privname, "%s/rsa_key.priv", confbase);
 387         f = ask_and_open(privname, "private RSA key");
 388         free(privname);
 389
 390         if(!f)
 391                 return false;
 392
 393 #ifdef HAVE_FCHMOD
 394         /* Make it unreadable for others. */
 395         fchmod(fileno(f), 0600);
 396 #endif
 397
 398         fputc('\n', f);
 399         PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
 400         fclose(f);
 401
 402         char *name = get_name();
 403
 404         if(name) {
 405                 xasprintf(&pubname, "%s/hosts/%s", confbase, name);
 406                 free(name);
 407         } else {
 408                 xasprintf(&pubname, "%s/rsa_key.pub", confbase);
 409         }
 410
 411         f = ask_and_open(pubname, "public RSA key");
 412         free(pubname);
 413
 414         if(!f)
 415                 return false;
 416
 417         fputc('\n', f);
 418         PEM_write_RSAPublicKey(f, rsa_key);
 419         fclose(f);
 420
 421         return true;
 422 }
 423
 424 /*
 425   Set all files and paths according to netname
 426 */
 427 static void make_names(void) {
 428 #ifdef HAVE_MINGW
 429         HKEY key;
 430         char installdir[1024] = "";
 431         DWORD len = sizeof(installdir);
 432 #endif
 433
 434         if(netname)
 435                 xasprintf(&identname, "tinc.%s", netname);
 436         else
 437                 identname = xstrdup("tinc");
 438
 439 #ifdef HAVE_MINGW
 440         if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
 441                 if(!RegQueryValueEx(key, NULL, 0, 0, (LPBYTE)installdir, &len)) {
 442                         if(!confbase) {
 443                                 if(netname)
 444                                         xasprintf(&confbase, "%s/%s", installdir, netname);
 445                                 else
 446                                         xasprintf(&confbase, "%s", installdir);
 447                         }
 448                         if(!logfilename)
 449                                 xasprintf(&logfilename, "%s/tinc.log", confbase);
 450                 }
 451                 RegCloseKey(key);
 452                 if(*installdir)
 453                         return;
 454         }
 455 #endif
 456
 457         if(!pidfilename)
 458                 xasprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname);
 459
 460         if(!logfilename)
 461                 xasprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname);
 462
 463         if(netname) {
 464                 if(!confbase)
 465                         xasprintf(&confbase, CONFDIR "/tinc/%s", netname);
 466                 else
 467                         logger(LOG_INFO, "Both netname and configuration directory given, using the latter...");
 468         } else {
 469                 if(!confbase)
 470                         xasprintf(&confbase, CONFDIR "/tinc");
 471         }
 472 }
 473
 474 static void free_names() {
 475         if (identname) free(identname);
 476         if (netname) free(netname);
 477         if (pidfilename) free(pidfilename);
 478         if (logfilename) free(logfilename);
 479         if (confbase) free(confbase);
 480 }
 481
 482 static bool drop_privs() {
 483 #ifdef HAVE_MINGW
 484         if (switchuser) {
 485                 logger(LOG_ERR, "%s not supported on this platform", "-U");
 486                 return false;
 487         }
 488         if (do_chroot) {
 489                 logger(LOG_ERR, "%s not supported on this platform", "-R");
 490                 return false;
 491         }
 492 #else
 493         uid_t uid = 0;
 494         if (switchuser) {
 495                 struct passwd *pw = getpwnam(switchuser);
 496                 if (!pw) {
 497                         logger(LOG_ERR, "unknown user `%s'", switchuser);
 498                         return false;
 499                 }
 500                 uid = pw->pw_uid;
 501                 if (initgroups(switchuser, pw->pw_gid) != 0 ||
 502                     setgid(pw->pw_gid) != 0) {
 503                         logger(LOG_ERR, "System call `%s' failed: %s",
 504                                "initgroups", strerror(errno));
 505                         return false;
 506                 }
 507 #ifndef __ANDROID__
 508 // Not supported in android NDK
 509                 endgrent();
 510                 endpwent();
 511 #endif
 512         }
 513         if (do_chroot) {
 514                 tzset();        /* for proper timestamps in logs */
 515                 if (chroot(confbase) != 0 || chdir("/") != 0) {
 516                         logger(LOG_ERR, "System call `%s' failed: %s",
 517                                "chroot", strerror(errno));
 518                         return false;
 519                 }
 520                 free(confbase);
 521                 confbase = xstrdup("");
 522         }
 523         if (switchuser)
 524                 if (setuid(uid) != 0) {
 525                         logger(LOG_ERR, "System call `%s' failed: %s",
 526                                "setuid", strerror(errno));
 527                         return false;
 528                 }
 529 #endif
 530         return true;
 531 }
 532
 533 #ifdef HAVE_MINGW
 534 # define setpriority(level) !SetPriorityClass(GetCurrentProcess(), (level))
 535 #else
 536 # define NORMAL_PRIORITY_CLASS 0
 537 # define BELOW_NORMAL_PRIORITY_CLASS 10
 538 # define HIGH_PRIORITY_CLASS -10
 539 # define setpriority(level) (setpriority(PRIO_PROCESS, 0, (level)))
 540 #endif
 541
 542 int main(int argc, char **argv) {
 543         program_name = argv[0];
 544
 545         if(!parse_options(argc, argv))
 546                 return 1;
 547
 548         make_names();
 549
 550         if(show_version) {
 551                 printf("%s version %s (built %s %s, protocol %d)\n", PACKAGE,
 552                            VERSION, __DATE__, __TIME__, PROT_CURRENT);
 553                 printf("Copyright (C) 1998-2015 Ivo Timmermans, Guus Sliepen and others.\n"
 554                                 "See the AUTHORS file for a complete list.\n\n"
 555                                 "tinc comes with ABSOLUTELY NO WARRANTY.  This is free software,\n"
 556                                 "and you are welcome to redistribute it under certain conditions;\n"
 557                                 "see the file COPYING for details.\n");
 558
 559                 return 0;
 560         }
 561
 562         if(show_help) {
 563                 usage(false);
 564                 return 0;
 565         }
 566
 567         if(kill_tincd)
 568                 return !kill_other(kill_tincd);
 569
 570         openlogger("tinc", use_logfile?LOGMODE_FILE:LOGMODE_STDERR);
 571
 572         g_argv = argv;
 573
 574         if(getenv("LISTEN_PID") && atoi(getenv("LISTEN_PID")) == getpid())
 575                 do_detach = false;
 576 #ifdef HAVE_UNSETENV
 577         unsetenv("LISTEN_PID");
 578 #endif
 579
 580         init_configuration(&config_tree);
 581
 582         /* Slllluuuuuuurrrrp! */
 583
 584         RAND_load_file("/dev/urandom", 1024);
 585
 586         ENGINE_load_builtin_engines();
 587         ENGINE_register_all_complete();
 588
 589         OpenSSL_add_all_algorithms();
 590
 591         if(generate_keys) {
 592                 read_server_config();
 593                 return !keygen(generate_keys);
 594         }
 595
 596         if(!read_server_config())
 597                 return 1;
 598
 599 #ifdef HAVE_LZO
 600         if(lzo_init() != LZO_E_OK) {
 601                 logger(LOG_ERR, "Error initializing LZO compressor!");
 602                 return 1;
 603         }
 604 #endif
 605
 606 #ifdef HAVE_MINGW
 607         if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
 608                 logger(LOG_ERR, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
 609                 return 1;
 610         }
 611
 612         if(!do_detach || !init_service())
 613                 return main2(argc, argv);
 614         else
 615                 return 1;
 616 }
 617
 618 int main2(int argc, char **argv) {
 619         InitializeCriticalSection(&mutex);
 620         EnterCriticalSection(&mutex);
 621 #endif
 622         char *priority = NULL;
 623
 624         if(!detach())
 625                 return 1;
 626
 627 #ifdef HAVE_MLOCKALL
 628         /* Lock all pages into memory if requested.
 629          * This has to be done after daemon()/fork() so it works for child.
 630          * No need to do that in parent as it's very short-lived. */
 631         if(do_mlock && mlockall(MCL_CURRENT | MCL_FUTURE) != 0) {
 632                 logger(LOG_ERR, "System call `%s' failed: %s", "mlockall",
 633                    strerror(errno));
 634                 return 1;
 635         }
 636 #endif
 637
 638         /* Setup sockets and open device. */
 639
 640         if(!setup_network())
 641                 goto end;
 642
 643         /* Initiate all outgoing connections. */
 644
 645         try_outgoing_connections();
 646
 647         /* Change process priority */
 648
 649         if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) {
 650                 if(!strcasecmp(priority, "Normal")) {
 651                         if (setpriority(NORMAL_PRIORITY_CLASS) != 0) {
 652                                 logger(LOG_ERR, "System call `%s' failed: %s",
 653                                        "setpriority", strerror(errno));
 654                                 goto end;
 655                         }
 656                 } else if(!strcasecmp(priority, "Low")) {
 657                         if (setpriority(BELOW_NORMAL_PRIORITY_CLASS) != 0) {
 658                                        logger(LOG_ERR, "System call `%s' failed: %s",
 659                                        "setpriority", strerror(errno));
 660                                 goto end;
 661                         }
 662                 } else if(!strcasecmp(priority, "High")) {
 663                         if (setpriority(HIGH_PRIORITY_CLASS) != 0) {
 664                                 logger(LOG_ERR, "System call `%s' failed: %s",
 665                                        "setpriority", strerror(errno));
 666                                 goto end;
 667                         }
 668                 } else {
 669                         logger(LOG_ERR, "Invalid priority `%s`!", priority);
 670                         goto end;
 671                 }
 672         }
 673
 674         /* drop privileges */
 675         if (!drop_privs())
 676                 goto end;
 677
 678         /* Start main loop. It only exits when tinc is killed. */
 679
 680         status = main_loop();
 681
 682         /* Shutdown properly. */
 683
 684         ifdebug(CONNECTIONS)
 685                 devops.dump_stats();
 686
 687         close_network_connections();
 688
 689 end:
 690         logger(LOG_NOTICE, "Terminating");
 691
 692 #ifndef HAVE_MINGW
 693         remove_pid(pidfilename);
 694 #endif
 695
 696         free(priority);
 697
 698         EVP_cleanup();
 699         ENGINE_cleanup();
 700         CRYPTO_cleanup_all_ex_data();
 701         ERR_remove_state(0);
 702         ERR_free_strings();
 703
 704         exit_configuration(&config_tree);
 705         list_free(cmdline_conf);
 706         free_names();
 707
 708         return status;
 709 }