src/pluto/plutomain.c

   1 /* Pluto main program
   2  * Copyright (C) 1997 Angelos D. Keromytis.
   3  * Copyright (C) 1998-2001 D. Hugh Redelmeier.
   4  * Copyright (C) 2009 Andreas Steffen - Hochschule fuer Technik Rapperswil
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * for more details.
  15  */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <unistd.h>
  20 #include <ctype.h>
  21 #include <errno.h>
  22 #include <string.h>
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <sys/un.h>
  26 #include <fcntl.h>
  27 #include <getopt.h>
  28 #include <resolv.h>
  29 #include <arpa/nameser.h>       /* missing from <resolv.h> on old systems */
  30 #include <sys/queue.h>
  31 #include <sys/prctl.h>
  32 #include <pwd.h>
  33 #include <grp.h>
  34
  35 #ifdef CAPABILITIES
  36 #include <sys/capability.h>
  37 #endif /* CAPABILITIES */
  38
  39 #include <freeswan.h>
  40
  41 #include <library.h>
  42 #include <debug.h>
  43 #include <utils/enumerator.h>
  44 #include <utils/optionsfrom.h>
  45
  46 #include <pfkeyv2.h>
  47 #include <pfkey.h>
  48
  49 #include "constants.h"
  50 #include "defs.h"
  51 #include "myid.h"
  52 #include "ca.h"
  53 #include "certs.h"
  54 #include "ac.h"
  55 #include "connections.h"
  56 #include "foodgroups.h"
  57 #include "packet.h"
  58 #include "demux.h"      /* needs packet.h */
  59 #include "server.h"
  60 #include "kernel.h"
  61 #include "log.h"
  62 #include "keys.h"
  63 #include "adns.h"       /* needs <resolv.h> */
  64 #include "dnskey.h"     /* needs keys.h and adns.h */
  65 #include "state.h"
  66 #include "ipsec_doi.h"  /* needs demux.h and state.h */
  67 #include "ocsp.h"
  68 #include "crl.h"
  69 #include "fetch.h"
  70 #include "xauth.h"
  71 #include "crypto.h"
  72 #include "nat_traversal.h"
  73 #include "virtual.h"
  74 #include "timer.h"
  75 #include "vendor.h"
  76 #include "builder.h"
  77
  78 static void usage(const char *mess)
  79 {
  80         if (mess != NULL && *mess != '\0')
  81                 fprintf(stderr, "%s\n", mess);
  82         fprintf(stderr
  83                 , "Usage: pluto"
  84                         " [--help]"
  85                         " [--version]"
  86                         " [--optionsfrom <filename>]"
  87                         " \\\n\t"
  88                         "[--nofork]"
  89                         " [--stderrlog]"
  90                         " [--noklips]"
  91                         " [--nocrsend]"
  92                         " \\\n\t"
  93                         "[--strictcrlpolicy]"
  94                         " [--crlcheckinterval <interval>]"
  95                         " [--cachecrls]"
  96                         " [--uniqueids]"
  97                         " \\\n\t"
  98                         "[--interface <ifname>]"
  99                         " [--ikeport <port-number>]"
 100                         " \\\n\t"
 101                         "[--ctlbase <path>]"
 102                         " \\\n\t"
 103                         "[--perpeerlogbase <path>] [--perpeerlog]"
 104                         " \\\n\t"
 105                         "[--secretsfile <secrets-file>]"
 106                         " [--policygroupsdir <policygroups-dir>]"
 107                         " \\\n\t"
 108                         "[--adns <pathname>]"
 109                         "[--pkcs11module <path>]"
 110                         "[--pkcs11keepstate]"
 111                         "[--pkcs11initargs <string>]"
 112 #ifdef DEBUG
 113                         " \\\n\t"
 114                         "[--debug-none]"
 115                         " [--debug-all]"
 116                         " \\\n\t"
 117                         "[--debug-raw]"
 118                         " [--debug-crypt]"
 119                         " [--debug-parsing]"
 120                         " [--debug-emitting]"
 121                         " \\\n\t"
 122                         "[--debug-control]"
 123                         " [--debug-lifecycle]"
 124                         " [--debug-klips]"
 125                         " [--debug-dns]"
 126                         " \\\n\t"
 127                         "[--debug-oppo]"
 128                         " [--debug-controlmore]"
 129                         " [--debug-private]"
 130                         " [--debug-natt]"
 131 #endif
 132                     " \\\n\t"
 133                         "[--nat_traversal] [--keep_alive <delay_sec>]"
 134                         " \\\n\t"
 135                         "[--force_keepalive] [--disable_port_floating]"
 136                     " \\\n\t"
 137                     "[--virtual_private <network_list>]"
 138                         "\n"
 139                     "strongSwan "VERSION"\n");
 140         exit_pluto(mess == NULL? 0 : 1);
 141 }
 142
 143
 144 /* lock file support
 145  * - provides convenient way for scripts to find Pluto's pid
 146  * - prevents multiple Plutos competing for the same port
 147  * - same basename as unix domain control socket
 148  * NOTE: will not take account of sharing LOCK_DIR with other systems.
 149  */
 150
 151 static char pluto_lock[sizeof(ctl_addr.sun_path)] = DEFAULT_CTLBASE LOCK_SUFFIX;
 152 static bool pluto_lock_created = FALSE;
 153
 154 /* create lockfile, or die in the attempt */
 155 static int create_lock(void)
 156 {
 157         int fd = open(pluto_lock, O_WRONLY | O_CREAT | O_EXCL | O_TRUNC
 158                 , S_IRUSR | S_IRGRP | S_IROTH);
 159
 160         if (fd < 0)
 161         {
 162                 if (errno == EEXIST)
 163                 {
 164                         fprintf(stderr, "pluto: lock file \"%s\" already exists\n"
 165                                 , pluto_lock);
 166                         exit_pluto(10);
 167                 }
 168                 else
 169                 {
 170                         fprintf(stderr
 171                                 , "pluto: unable to create lock file \"%s\" (%d %s)\n"
 172                                 , pluto_lock, errno, strerror(errno));
 173                         exit_pluto(1);
 174                 }
 175         }
 176         pluto_lock_created = TRUE;
 177         return fd;
 178 }
 179
 180 static bool fill_lock(int lockfd, pid_t pid)
 181 {
 182         char buf[30];       /* holds "<pid>\n" */
 183         int len = snprintf(buf, sizeof(buf), "%u\n", (unsigned int) pid);
 184         bool ok = len > 0 && write(lockfd, buf, len) == len;
 185
 186         close(lockfd);
 187         return ok;
 188 }
 189
 190 static void delete_lock(void)
 191 {
 192         if (pluto_lock_created)
 193         {
 194                 delete_ctl_socket();
 195                 unlink(pluto_lock);     /* is noting failure useful? */
 196         }
 197 }
 198
 199
 200 /* by default pluto sends certificate requests to its peers */
 201 bool no_cr_send = FALSE;
 202
 203 /* by default the CRL policy is lenient */
 204 bool strict_crl_policy = FALSE;
 205
 206 /* by default CRLs are cached locally as files */
 207 bool cache_crls = FALSE;
 208
 209 /* by default pluto does not check crls dynamically */
 210 long crl_check_interval = 0;
 211
 212 /* path to the PKCS#11 module */
 213 char *pkcs11_module_path = NULL;
 214
 215 /* by default pluto logs out after every smartcard use */
 216 bool pkcs11_keep_state = FALSE;
 217
 218 /* by default pluto does not allow pkcs11 proxy access via whack */
 219 bool pkcs11_proxy = FALSE;
 220
 221 /* argument string to pass to PKCS#11 module.
 222  * Not used for compliant modules, just for NSS softoken
 223  */
 224 static const char *pkcs11_init_args = NULL;
 225
 226 /* options read by optionsfrom */
 227 options_t *options;
 228
 229 /**
 230  * Log loaded plugins
 231  */
 232 static void print_plugins()
 233 {
 234         char buf[BUF_LEN], *plugin;
 235         int len = 0;
 236         enumerator_t *enumerator;
 237
 238         buf[0] = '\0';
 239         enumerator = lib->plugins->create_plugin_enumerator(lib->plugins);
 240         while (len < BUF_LEN && enumerator->enumerate(enumerator, &plugin))
 241         {
 242                 len += snprintf(&buf[len], BUF_LEN-len, "%s ", plugin);
 243         }
 244         enumerator->destroy(enumerator);
 245         DBG1("loaded plugins: %s", buf);
 246 }
 247
 248 int main(int argc, char **argv)
 249 {
 250         bool fork_desired = TRUE;
 251         bool log_to_stderr_desired = FALSE;
 252         bool nat_traversal = FALSE;
 253         bool nat_t_spf = TRUE;  /* support port floating */
 254         unsigned int keep_alive = 0;
 255         bool force_keepalive = FALSE;
 256         char *virtual_private = NULL;
 257         int lockfd;
 258 #ifdef CAPABILITIES
 259         cap_t caps;
 260         int keep[] = { CAP_NET_ADMIN, CAP_NET_BIND_SERVICE };
 261 #endif /* CAPABILITIES */
 262
 263         /* initialize library and optionsfrom */
 264         if (!library_init(NULL))
 265         {
 266                 library_deinit();
 267                 exit(SS_RC_LIBSTRONGSWAN_INTEGRITY);
 268         }
 269         if (lib->integrity &&
 270                 !lib->integrity->check_file(lib->integrity, "pluto", argv[0]))
 271         {
 272                 fprintf(stderr, "integrity check of pluto failed\n");
 273                 library_deinit();
 274                 exit(SS_RC_DAEMON_INTEGRITY);
 275         }
 276         options = options_create();
 277
 278         /* handle arguments */
 279         for (;;)
 280         {
 281 #       define DBG_OFFSET 256
 282                 static const struct option long_opts[] = {
 283                         /* name, has_arg, flag, val */
 284                         { "help", no_argument, NULL, 'h' },
 285                         { "version", no_argument, NULL, 'v' },
 286                         { "optionsfrom", required_argument, NULL, '+' },
 287                         { "nofork", no_argument, NULL, 'd' },
 288                         { "stderrlog", no_argument, NULL, 'e' },
 289                         { "noklips", no_argument, NULL, 'n' },
 290                         { "nocrsend", no_argument, NULL, 'c' },
 291                         { "strictcrlpolicy", no_argument, NULL, 'r' },
 292                         { "crlcheckinterval", required_argument, NULL, 'x'},
 293                         { "cachecrls", no_argument, NULL, 'C' },
 294                         { "uniqueids", no_argument, NULL, 'u' },
 295                         { "interface", required_argument, NULL, 'i' },
 296                         { "ikeport", required_argument, NULL, 'p' },
 297                         { "ctlbase", required_argument, NULL, 'b' },
 298                         { "secretsfile", required_argument, NULL, 's' },
 299                         { "foodgroupsdir", required_argument, NULL, 'f' },
 300                         { "perpeerlogbase", required_argument, NULL, 'P' },
 301                         { "perpeerlog", no_argument, NULL, 'l' },
 302                         { "policygroupsdir", required_argument, NULL, 'f' },
 303 #ifdef USE_LWRES
 304                         { "lwdnsq", required_argument, NULL, 'a' },
 305 #else /* !USE_LWRES */
 306                         { "adns", required_argument, NULL, 'a' },
 307 #endif /* !USE_LWRES */
 308                         { "pkcs11module", required_argument, NULL, 'm' },
 309                         { "pkcs11keepstate", no_argument, NULL, 'k' },
 310                         { "pkcs11initargs", required_argument, NULL, 'z' },
 311                         { "pkcs11proxy", no_argument, NULL, 'y' },
 312                         { "nat_traversal", no_argument, NULL, '1' },
 313                         { "keep_alive", required_argument, NULL, '2' },
 314                         { "force_keepalive", no_argument, NULL, '3' },
 315                         { "disable_port_floating", no_argument, NULL, '4' },
 316                         { "debug-natt", no_argument, NULL, '5' },
 317                         { "virtual_private", required_argument, NULL, '6' },
 318 #ifdef DEBUG
 319                         { "debug-none", no_argument, NULL, 'N' },
 320                         { "debug-all", no_argument, NULL, 'A' },
 321                         { "debug-raw", no_argument, NULL, DBG_RAW + DBG_OFFSET },
 322                         { "debug-crypt", no_argument, NULL, DBG_CRYPT + DBG_OFFSET },
 323                         { "debug-parsing", no_argument, NULL, DBG_PARSING + DBG_OFFSET },
 324                         { "debug-emitting", no_argument, NULL, DBG_EMITTING + DBG_OFFSET },
 325                         { "debug-control", no_argument, NULL, DBG_CONTROL + DBG_OFFSET },
 326                         { "debug-lifecycle", no_argument, NULL, DBG_LIFECYCLE + DBG_OFFSET },
 327                         { "debug-klips", no_argument, NULL, DBG_KLIPS + DBG_OFFSET },
 328                         { "debug-dns", no_argument, NULL, DBG_DNS + DBG_OFFSET },
 329                         { "debug-oppo", no_argument, NULL, DBG_OPPO + DBG_OFFSET },
 330                         { "debug-controlmore", no_argument, NULL, DBG_CONTROLMORE + DBG_OFFSET },
 331                         { "debug-private", no_argument, NULL, DBG_PRIVATE + DBG_OFFSET },
 332
 333                         { "impair-delay-adns-key-answer", no_argument, NULL, IMPAIR_DELAY_ADNS_KEY_ANSWER + DBG_OFFSET },
 334                         { "impair-delay-adns-txt-answer", no_argument, NULL, IMPAIR_DELAY_ADNS_TXT_ANSWER + DBG_OFFSET },
 335                         { "impair-bust-mi2", no_argument, NULL, IMPAIR_BUST_MI2 + DBG_OFFSET },
 336                         { "impair-bust-mr2", no_argument, NULL, IMPAIR_BUST_MR2 + DBG_OFFSET },
 337 #endif
 338                         { 0,0,0,0 }
 339                         };
 340                 /* Note: we don't like the way short options get parsed
 341                  * by getopt_long, so we simply pass an empty string as
 342                  * the list.  It could be "hvdenp:l:s:" "NARXPECK".
 343                  */
 344                 int c = getopt_long(argc, argv, "", long_opts, NULL);
 345
 346                 /* Note: "breaking" from case terminates loop */
 347                 switch (c)
 348                 {
 349                 case EOF:       /* end of flags */
 350                         break;
 351
 352                 case 0: /* long option already handled */
 353                         continue;
 354
 355                 case ':':       /* diagnostic already printed by getopt_long */
 356                 case '?':       /* diagnostic already printed by getopt_long */
 357                         usage("");
 358                         break;   /* not actually reached */
 359
 360                 case 'h':       /* --help */
 361                         usage(NULL);
 362                         break;      /* not actually reached */
 363
 364                 case 'v':       /* --version */
 365                         {
 366                                 const char **sp = ipsec_copyright_notice();
 367
 368                                 printf("strongSwan "VERSION"%s\n", compile_time_interop_options);
 369                                 for (; *sp != NULL; sp++)
 370                                         puts(*sp);
 371                         }
 372                         exit_pluto(0);
 373                         break;      /* not actually reached */
 374
 375                 case '+':       /* --optionsfrom <filename> */
 376                         if (!options->from(options, optarg, &argc, &argv, optind))
 377                         {
 378                                 exit_pluto(1);
 379                         }
 380                         continue;
 381
 382                 case 'd':       /* --nofork*/
 383                         fork_desired = FALSE;
 384                         continue;
 385
 386                 case 'e':       /* --stderrlog */
 387                         log_to_stderr_desired = TRUE;
 388                         continue;
 389
 390                 case 'n':       /* --noklips */
 391                         no_klips = TRUE;
 392                         continue;
 393
 394                 case 'c':       /* --nocrsend */
 395                         no_cr_send = TRUE;
 396                         continue;
 397
 398                 case 'r':       /* --strictcrlpolicy */
 399                         strict_crl_policy = TRUE;
 400                         continue;
 401
 402                 case 'x':       /* --crlcheckinterval <time>*/
 403                         if (optarg == NULL || !isdigit(optarg[0]))
 404                                 usage("missing interval time");
 405
 406                         {
 407                                 char *endptr;
 408                                 long interval = strtol(optarg, &endptr, 0);
 409
 410                                 if (*endptr != '\0' || endptr == optarg
 411                                 || interval <= 0)
 412                                         usage("<interval-time> must be a positive number");
 413                                 crl_check_interval = interval;
 414                         }
 415                         continue;
 416
 417                 case 'C':       /* --cachecrls */
 418                         cache_crls = TRUE;
 419                         continue;
 420
 421                 case 'u':       /* --uniqueids */
 422                         uniqueIDs = TRUE;
 423                         continue;
 424
 425                 case 'i':       /* --interface <ifname> */
 426                         if (!use_interface(optarg))
 427                                 usage("too many --interface specifications");
 428                         continue;
 429
 430                 case 'p':       /* --port <portnumber> */
 431                         if (optarg == NULL || !isdigit(optarg[0]))
 432                                 usage("missing port number");
 433
 434                         {
 435                                 char *endptr;
 436                                 long port = strtol(optarg, &endptr, 0);
 437
 438                                 if (*endptr != '\0' || endptr == optarg
 439                                 || port <= 0 || port > 0x10000)
 440                                         usage("<port-number> must be a number between 1 and 65535");
 441                                 pluto_port = port;
 442                         }
 443                         continue;
 444
 445                 case 'b':       /* --ctlbase <path> */
 446                         if (snprintf(ctl_addr.sun_path, sizeof(ctl_addr.sun_path)
 447                         , "%s%s", optarg, CTL_SUFFIX) == -1)
 448                                 usage("<path>" CTL_SUFFIX " too long for sun_path");
 449                         if (snprintf(info_addr.sun_path, sizeof(info_addr.sun_path)
 450                         , "%s%s", optarg, INFO_SUFFIX) == -1)
 451                                 usage("<path>" INFO_SUFFIX " too long for sun_path");
 452                         if (snprintf(pluto_lock, sizeof(pluto_lock)
 453                         , "%s%s", optarg, LOCK_SUFFIX) == -1)
 454                                 usage("<path>" LOCK_SUFFIX " must fit");
 455                         continue;
 456
 457                 case 's':       /* --secretsfile <secrets-file> */
 458                         shared_secrets_file = optarg;
 459                         continue;
 460
 461                 case 'f':       /* --policygroupsdir <policygroups-dir> */
 462                         policygroups_dir = optarg;
 463                         continue;
 464
 465                 case 'a':       /* --adns <pathname> */
 466                         pluto_adns_option = optarg;
 467                         continue;
 468
 469                 case 'm':       /* --pkcs11module <pathname> */
 470                         pkcs11_module_path = optarg;
 471                         continue;
 472
 473                 case 'k':       /* --pkcs11keepstate */
 474                         pkcs11_keep_state = TRUE;
 475                         continue;
 476
 477                 case 'y':       /* --pkcs11proxy */
 478                         pkcs11_proxy = TRUE;
 479                         continue;
 480
 481                 case 'z':       /* --pkcs11initargs */
 482                         pkcs11_init_args = optarg;
 483                         continue;
 484
 485 #ifdef DEBUG
 486                 case 'N':       /* --debug-none */
 487                         base_debugging = DBG_NONE;
 488                         continue;
 489
 490                 case 'A':       /* --debug-all */
 491                         base_debugging = DBG_ALL;
 492                         continue;
 493 #endif
 494
 495                 case 'P':       /* --perpeerlogbase */
 496                         base_perpeer_logdir = optarg;
 497                         continue;
 498
 499                 case 'l':
 500                         log_to_perpeer = TRUE;
 501                         continue;
 502
 503                 case '1':       /* --nat_traversal */
 504                         nat_traversal = TRUE;
 505                         continue;
 506                 case '2':       /* --keep_alive */
 507                         keep_alive = atoi(optarg);
 508                         continue;
 509                 case '3':       /* --force_keepalive */
 510                         force_keepalive = TRUE;
 511                         continue;
 512                 case '4':       /* --disable_port_floating */
 513                         nat_t_spf = FALSE;
 514                         continue;
 515                 case '5':       /* --debug-nat_t */
 516                         base_debugging |= DBG_NATT;
 517                         continue;
 518                 case '6':       /* --virtual_private */
 519                         virtual_private = optarg;
 520                         continue;
 521
 522                 default:
 523 #ifdef DEBUG
 524                         if (c >= DBG_OFFSET)
 525                         {
 526                                 base_debugging |= c - DBG_OFFSET;
 527                                 continue;
 528                         }
 529 #       undef DBG_OFFSET
 530 #endif
 531                         bad_case(c);
 532                 }
 533                 break;
 534         }
 535         if (optind != argc)
 536                 usage("unexpected argument");
 537         reset_debugging();
 538         lockfd = create_lock();
 539
 540         /* select between logging methods */
 541
 542         if (log_to_stderr_desired)
 543         {
 544                 log_to_syslog = FALSE;
 545         }
 546         else
 547         {
 548                 log_to_stderr = FALSE;
 549         }
 550
 551         /* set the logging function of pfkey debugging */
 552 #ifdef DEBUG
 553         pfkey_debug_func = DBG_log;
 554 #else
 555         pfkey_debug_func = NULL;
 556 #endif
 557
 558         /* create control socket.
 559          * We must create it before the parent process returns so that
 560          * there will be no race condition in using it.  The easiest
 561          * place to do this is before the daemon fork.
 562          */
 563         {
 564                 err_t ugh = init_ctl_socket();
 565
 566                 if (ugh != NULL)
 567                 {
 568                         fprintf(stderr, "pluto: %s", ugh);
 569                         exit_pluto(1);
 570                 }
 571         }
 572
 573         /* If not suppressed, do daemon fork */
 574
 575         if (fork_desired)
 576         {
 577                 {
 578                         pid_t pid = fork();
 579
 580                         if (pid < 0)
 581                         {
 582                                 int e = errno;
 583
 584                                 fprintf(stderr, "pluto: fork failed (%d %s)\n",
 585                                         errno, strerror(e));
 586                                 exit_pluto(1);
 587                         }
 588
 589                         if (pid != 0)
 590                         {
 591                                 /* parent: die, after filling PID into lock file.
 592                                  * must not use exit_pluto: lock would be removed!
 593                                  */
 594                                 exit(fill_lock(lockfd, pid)? 0 : 1);
 595                         }
 596                 }
 597
 598                 if (setsid() < 0)
 599                 {
 600                         int e = errno;
 601
 602                         fprintf(stderr, "setsid() failed in main(). Errno %d: %s\n",
 603                                 errno, strerror(e));
 604                         exit_pluto(1);
 605                 }
 606         }
 607         else
 608         {
 609                 /* no daemon fork: we have to fill in lock file */
 610                 (void) fill_lock(lockfd, getpid());
 611                 fprintf(stdout, "Pluto initialized\n");
 612                 fflush(stdout);
 613         }
 614
 615         /* Close everything but ctl_fd and (if needed) stderr.
 616          * There is some danger that a library that we don't know
 617          * about is using some fd that we don't know about.
 618          * I guess we'll soon find out.
 619          */
 620         {
 621                 int i;
 622
 623                 for (i = getdtablesize() - 1; i >= 0; i--)  /* Bad hack */
 624                 {
 625                         if ((!log_to_stderr || i != 2) && i != ctl_fd)
 626                                 close(i);
 627                 }
 628
 629                 /* make sure that stdin, stdout, stderr are reserved */
 630                 if (open("/dev/null", O_RDONLY) != 0)
 631                         abort();
 632                 if (dup2(0, 1) != 1)
 633                         abort();
 634                 if (!log_to_stderr && dup2(0, 2) != 2)
 635                         abort();
 636         }
 637
 638         init_constants();
 639         init_log("pluto");
 640
 641         /* Note: some scripts may look for this exact message -- don't change
 642          * ipsec barf was one, but it no longer does.
 643          */
 644         plog("Starting IKEv1 pluto daemon (strongSwan "VERSION")%s",
 645                  compile_time_interop_options);
 646
 647         if (lib->integrity)
 648         {
 649                 plog("integrity tests enabled:");
 650                 plog("lib    'libstrongswan': passed file and segment integrity tests");
 651                 plog("daemon 'pluto': passed file integrity test");
 652         }
 653
 654         /* load plugins, further infrastructure may need it */
 655         if (!lib->plugins->load(lib->plugins, NULL,
 656                         lib->settings->get_str(lib->settings, "pluto.load", PLUGINS)))
 657         {
 658                 exit(SS_RC_INITIALIZATION_FAILED);
 659         }
 660         print_plugins();
 661
 662         init_builder();
 663         if (!init_secret() || !init_crypto())
 664         {
 665                 plog("initialization failed - aborting pluto");
 666                 exit_pluto(SS_RC_INITIALIZATION_FAILED);
 667         }
 668         init_nat_traversal(nat_traversal, keep_alive, force_keepalive, nat_t_spf);
 669         init_virtual_ip(virtual_private);
 670         scx_init(pkcs11_module_path, pkcs11_init_args);
 671         xauth_init();
 672         init_states();
 673         init_demux();
 674         init_kernel();
 675         init_adns();
 676         init_myid();
 677         fetch_initialize();
 678         ac_initialize();
 679
 680         /* drop unneeded capabilities and change UID/GID */
 681         prctl(PR_SET_KEEPCAPS, 1);
 682
 683 #ifdef IPSEC_GROUP
 684         {
 685                 struct group group, *grp;
 686         char buf[1024];
 687
 688                 if (getgrnam_r(IPSEC_GROUP, &group, buf, sizeof(buf), &grp) != 0 ||
 689                                 grp == NULL || setgid(grp->gr_gid) != 0)
 690                 {
 691                         plog("unable to change daemon group");
 692                         abort();
 693                 }
 694         }
 695 #endif
 696 #ifdef IPSEC_USER
 697         {
 698                 struct passwd passwd, *pwp;
 699         char buf[1024];
 700
 701                 if (getpwnam_r(IPSEC_USER, &passwd, buf, sizeof(buf), &pwp) != 0 ||
 702                                 pwp == NULL || setuid(pwp->pw_uid) != 0)
 703                 {
 704                         plog("unable to change daemon user");
 705                         abort();
 706                 }
 707                 }
 708 #endif
 709
 710 #ifdef CAPABILITIES
 711         caps = cap_init();
 712         cap_set_flag(caps, CAP_EFFECTIVE, 2, keep, CAP_SET);
 713         cap_set_flag(caps, CAP_INHERITABLE, 2, keep, CAP_SET);
 714         cap_set_flag(caps, CAP_PERMITTED, 2, keep, CAP_SET);
 715         if (cap_set_proc(caps) != 0)
 716         {
 717                 plog("unable to drop daemon capabilities");
 718                 abort();
 719         }
 720         cap_free(caps);
 721 #endif /* CAPABILITIES */
 722
 723         /* loading X.509 CA certificates */
 724         load_authcerts("ca", CA_CERT_PATH, X509_CA);
 725         /* loading X.509 AA certificates */
 726         load_authcerts("aa", AA_CERT_PATH, X509_AA);
 727         /* loading X.509 OCSP certificates */
 728         load_authcerts("ocsp", OCSP_CERT_PATH, X509_OCSP_SIGNER);
 729         /* loading X.509 CRLs */
 730         load_crls();
 731         /* loading attribute certificates (experimental) */
 732         ac_load_certs();
 733
 734         daily_log_event();
 735         call_server();
 736         return -1;  /* Shouldn't ever reach this */
 737 }
 738
 739 /* leave pluto, with status.
 740  * Once child is launched, parent must not exit this way because
 741  * the lock would be released.
 742  *
 743  *  0 OK
 744  *  1 general discomfort
 745  * 10 lock file exists
 746  */
 747 void exit_pluto(int status)
 748 {
 749         reset_globals();    /* needed because we may be called in odd state */
 750         free_preshared_secrets();
 751         free_remembered_public_keys();
 752         delete_every_connection();
 753         fetch_finalize();           /* stop fetching thread */
 754         free_crl_fetch();           /* free chain of crl fetch requests */
 755         free_ocsp_fetch();          /* free chain of ocsp fetch requests */
 756         free_authcerts();           /* free chain of X.509 authority certificates */
 757         free_crls();                /* free chain of X.509 CRLs */
 758         free_ca_infos();            /* free chain of X.509 CA information records */
 759         free_ocsp();                /* free ocsp cache */
 760         free_ifaces();
 761         ac_finalize();              /* free X.509 attribute certificates */
 762         scx_finalize();             /* finalize and unload PKCS #11 module */
 763         xauth_finalize();           /* finalize and unload XAUTH module */
 764         stop_adns();
 765         free_md_pool();
 766         free_crypto();
 767         free_myid();                /* free myids */
 768         free_events();              /* free remaining events */
 769         free_vendorid();            /* free all vendor id records */
 770         free_builder();
 771         delete_lock();
 772         options->destroy(options);
 773         library_deinit();
 774         close_log();
 775         exit(status);
 776 }
 777
 778 /*
 779  * Local Variables:
 780  * c-basic-offset:4
 781  * c-style: pluto
 782  * End:
 783  */