contrib/unbound/daemon/daemon.c

   1 /*
   2  * daemon/daemon.c - collection of workers that handles requests.
   3  *
   4  * Copyright (c) 2007, NLnet Labs. All rights reserved.
   5  *
   6  * This software is open source.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * Redistributions of source code must retain the above copyright notice,
  13  * this list of conditions and the following disclaimer.
  14  *
  15  * Redistributions in binary form must reproduce the above copyright notice,
  16  * this list of conditions and the following disclaimer in the documentation
  17  * and/or other materials provided with the distribution.
  18  *
  19  * Neither the name of the NLNET LABS nor the names of its contributors may
  20  * be used to endorse or promote products derived from this software without
  21  * specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  24  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  25  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  26  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  27  * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  28  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  29  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  30  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  31  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  32  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  33  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 /**
  37  * \file
  38  *
  39  * The daemon consists of global settings and a number of workers.
  40  */
  41
  42 #include "config.h"
  43 #ifdef HAVE_OPENSSL_ERR_H
  44 #include <openssl/err.h>
  45 #endif
  46
  47 #ifdef HAVE_OPENSSL_RAND_H
  48 #include <openssl/rand.h>
  49 #endif
  50
  51 #ifdef HAVE_OPENSSL_CONF_H
  52 #include <openssl/conf.h>
  53 #endif
  54
  55 #ifdef HAVE_OPENSSL_ENGINE_H
  56 #include <openssl/engine.h>
  57 #endif
  58
  59 #ifdef HAVE_TIME_H
  60 #include <time.h>
  61 #endif
  62 #include <sys/time.h>
  63
  64 #ifdef HAVE_NSS
  65 /* nss3 */
  66 #include "nss.h"
  67 #endif
  68
  69 #include "daemon/daemon.h"
  70 #include "daemon/worker.h"
  71 #include "daemon/remote.h"
  72 #include "daemon/acl_list.h"
  73 #include "util/log.h"
  74 #include "util/config_file.h"
  75 #include "util/data/msgreply.h"
  76 #include "util/storage/lookup3.h"
  77 #include "util/storage/slabhash.h"
  78 #include "services/listen_dnsport.h"
  79 #include "services/cache/rrset.h"
  80 #include "services/cache/infra.h"
  81 #include "services/localzone.h"
  82 #include "services/modstack.h"
  83 #include "util/module.h"
  84 #include "util/random.h"
  85 #include "util/tube.h"
  86 #include "util/net_help.h"
  87 #include "ldns/keyraw.h"
  88 #include <signal.h>
  89
  90 /** How many quit requests happened. */
  91 static int sig_record_quit = 0;
  92 /** How many reload requests happened. */
  93 static int sig_record_reload = 0;
  94
  95 #if HAVE_DECL_SSL_COMP_GET_COMPRESSION_METHODS
  96 /** cleaner ssl memory freeup */
  97 static void* comp_meth = NULL;
  98 #endif
  99 #ifdef LEX_HAS_YYLEX_DESTROY
 100 /** remove buffers for parsing and init */
 101 int ub_c_lex_destroy(void);
 102 #endif
 103
 104 /** used when no other sighandling happens, so we don't die
 105   * when multiple signals in quick succession are sent to us.
 106   * @param sig: signal number.
 107   * @return signal handler return type (void or int).
 108   */
 109 static RETSIGTYPE record_sigh(int sig)
 110 {
 111 #ifdef LIBEVENT_SIGNAL_PROBLEM
 112         verbose(VERB_OPS, "quit on signal, no cleanup and statistics, "
 113                 "because installed libevent version is not threadsafe");
 114         exit(0);
 115 #endif
 116         switch(sig)
 117         {
 118                 case SIGTERM:
 119 #ifdef SIGQUIT
 120                 case SIGQUIT:
 121 #endif
 122 #ifdef SIGBREAK
 123                 case SIGBREAK:
 124 #endif
 125                 case SIGINT:
 126                         sig_record_quit++;
 127                         break;
 128 #ifdef SIGHUP
 129                 case SIGHUP:
 130                         sig_record_reload++;
 131                         break;
 132 #endif
 133 #ifdef SIGPIPE
 134                 case SIGPIPE:
 135                         break;
 136 #endif
 137                 default:
 138                         log_err("ignoring signal %d", sig);
 139         }
 140 }
 141
 142 /**
 143  * Signal handling during the time when netevent is disabled.
 144  * Stores signals to replay later.
 145  */
 146 static void
 147 signal_handling_record(void)
 148 {
 149         if( signal(SIGTERM, record_sigh) == SIG_ERR ||
 150 #ifdef SIGQUIT
 151                 signal(SIGQUIT, record_sigh) == SIG_ERR ||
 152 #endif
 153 #ifdef SIGBREAK
 154                 signal(SIGBREAK, record_sigh) == SIG_ERR ||
 155 #endif
 156 #ifdef SIGHUP
 157                 signal(SIGHUP, record_sigh) == SIG_ERR ||
 158 #endif
 159 #ifdef SIGPIPE
 160                 signal(SIGPIPE, SIG_IGN) == SIG_ERR ||
 161 #endif
 162                 signal(SIGINT, record_sigh) == SIG_ERR
 163                 )
 164                 log_err("install sighandler: %s", strerror(errno));
 165 }
 166
 167 /**
 168  * Replay old signals.
 169  * @param wrk: worker that handles signals.
 170  */
 171 static void
 172 signal_handling_playback(struct worker* wrk)
 173 {
 174 #ifdef SIGHUP
 175         if(sig_record_reload)
 176                 worker_sighandler(SIGHUP, wrk);
 177 #endif
 178         if(sig_record_quit)
 179                 worker_sighandler(SIGTERM, wrk);
 180         sig_record_quit = 0;
 181         sig_record_reload = 0;
 182 }
 183
 184 struct daemon*
 185 daemon_init(void)
 186 {
 187         struct daemon* daemon = (struct daemon*)calloc(1,
 188                 sizeof(struct daemon));
 189 #ifdef USE_WINSOCK
 190         int r;
 191         WSADATA wsa_data;
 192 #endif
 193         if(!daemon)
 194                 return NULL;
 195 #ifdef USE_WINSOCK
 196         r = WSAStartup(MAKEWORD(2,2), &wsa_data);
 197         if(r != 0) {
 198                 fatal_exit("could not init winsock. WSAStartup: %s",
 199                         wsa_strerror(r));
 200         }
 201 #endif /* USE_WINSOCK */
 202         signal_handling_record();
 203         checklock_start();
 204 #ifdef HAVE_SSL
 205         ERR_load_crypto_strings();
 206         ERR_load_SSL_strings();
 207 #  ifdef HAVE_OPENSSL_CONFIG
 208         OPENSSL_config("unbound");
 209 #  endif
 210 #  ifdef USE_GOST
 211         (void)sldns_key_EVP_load_gost_id();
 212 #  endif
 213         OpenSSL_add_all_algorithms();
 214 #  if HAVE_DECL_SSL_COMP_GET_COMPRESSION_METHODS
 215         /* grab the COMP method ptr because openssl leaks it */
 216         comp_meth = (void*)SSL_COMP_get_compression_methods();
 217 #  endif
 218         (void)SSL_library_init();
 219 #  if defined(HAVE_SSL) && defined(OPENSSL_THREADS) && !defined(THREADS_DISABLED)
 220         if(!ub_openssl_lock_init())
 221                 fatal_exit("could not init openssl locks");
 222 #  endif
 223 #elif defined(HAVE_NSS)
 224         if(NSS_NoDB_Init(NULL) != SECSuccess)
 225                 fatal_exit("could not init NSS");
 226 #endif /* HAVE_SSL or HAVE_NSS */
 227 #ifdef HAVE_TZSET
 228         /* init timezone info while we are not chrooted yet */
 229         tzset();
 230 #endif
 231         /* open /dev/random if needed */
 232         ub_systemseed((unsigned)time(NULL)^(unsigned)getpid()^0xe67);
 233         daemon->need_to_exit = 0;
 234         modstack_init(&daemon->mods);
 235         if(!(daemon->env = (struct module_env*)calloc(1,
 236                 sizeof(*daemon->env)))) {
 237                 free(daemon);
 238                 return NULL;
 239         }
 240         alloc_init(&daemon->superalloc, NULL, 0);
 241         daemon->acl = acl_list_create();
 242         if(!daemon->acl) {
 243                 free(daemon->env);
 244                 free(daemon);
 245                 return NULL;
 246         }
 247         if(gettimeofday(&daemon->time_boot, NULL) < 0)
 248                 log_err("gettimeofday: %s", strerror(errno));
 249         daemon->time_last_stat = daemon->time_boot;
 250         return daemon;
 251 }
 252
 253 int
 254 daemon_open_shared_ports(struct daemon* daemon)
 255 {
 256         log_assert(daemon);
 257         if(daemon->cfg->port != daemon->listening_port) {
 258                 size_t i;
 259                 int reuseport = 0;
 260                 struct listen_port* p0;
 261                 /* free and close old ports */
 262                 if(daemon->ports != NULL) {
 263                         for(i=0; i<daemon->num_ports; i++)
 264                                 listening_ports_free(daemon->ports[i]);
 265                         free(daemon->ports);
 266                         daemon->ports = NULL;
 267                 }
 268                 /* see if we want to reuseport */
 269 #if defined(__linux__) && defined(SO_REUSEPORT)
 270                 if(daemon->cfg->so_reuseport && daemon->cfg->num_threads > 0)
 271                         reuseport = 1;
 272 #endif
 273                 /* try to use reuseport */
 274                 p0 = listening_ports_open(daemon->cfg, &reuseport);
 275                 if(!p0) {
 276                         listening_ports_free(p0);
 277                         return 0;
 278                 }
 279                 if(reuseport) {
 280                         /* reuseport was successful, allocate for it */
 281                         daemon->num_ports = (size_t)daemon->cfg->num_threads;
 282                 } else {
 283                         /* do the normal, singleportslist thing,
 284                          * reuseport not enabled or did not work */
 285                         daemon->num_ports = 1;
 286                 }
 287                 if(!(daemon->ports = (struct listen_port**)calloc(
 288                         daemon->num_ports, sizeof(*daemon->ports)))) {
 289                         listening_ports_free(p0);
 290                         return 0;
 291                 }
 292                 daemon->ports[0] = p0;
 293                 if(reuseport) {
 294                         /* continue to use reuseport */
 295                         for(i=1; i<daemon->num_ports; i++) {
 296                                 if(!(daemon->ports[i]=
 297                                         listening_ports_open(daemon->cfg,
 298                                                 &reuseport)) || !reuseport ) {
 299                                         for(i=0; i<daemon->num_ports; i++)
 300                                                 listening_ports_free(daemon->ports[i]);
 301                                         free(daemon->ports);
 302                                         daemon->ports = NULL;
 303                                         return 0;
 304                                 }
 305                         }
 306                 }
 307                 daemon->listening_port = daemon->cfg->port;
 308         }
 309         if(!daemon->cfg->remote_control_enable && daemon->rc_port) {
 310                 listening_ports_free(daemon->rc_ports);
 311                 daemon->rc_ports = NULL;
 312                 daemon->rc_port = 0;
 313         }
 314         if(daemon->cfg->remote_control_enable &&
 315                 daemon->cfg->control_port != daemon->rc_port) {
 316                 listening_ports_free(daemon->rc_ports);
 317                 if(!(daemon->rc_ports=daemon_remote_open_ports(daemon->cfg)))
 318                         return 0;
 319                 daemon->rc_port = daemon->cfg->control_port;
 320         }
 321         return 1;
 322 }
 323
 324 /**
 325  * Setup modules. setup module stack.
 326  * @param daemon: the daemon
 327  */
 328 static void daemon_setup_modules(struct daemon* daemon)
 329 {
 330         daemon->env->cfg = daemon->cfg;
 331         daemon->env->alloc = &daemon->superalloc;
 332         daemon->env->worker = NULL;
 333         daemon->env->need_to_validate = 0; /* set by module init below */
 334         if(!modstack_setup(&daemon->mods, daemon->cfg->module_conf,
 335                 daemon->env)) {
 336                 fatal_exit("failed to setup modules");
 337         }
 338 }
 339
 340 /**
 341  * Obtain allowed port numbers, concatenate the list, and shuffle them
 342  * (ready to be handed out to threads).
 343  * @param daemon: the daemon. Uses rand and cfg.
 344  * @param shufport: the portlist output.
 345  * @return number of ports available.
 346  */
 347 static int daemon_get_shufport(struct daemon* daemon, int* shufport)
 348 {
 349         int i, n, k, temp;
 350         int avail = 0;
 351         for(i=0; i<65536; i++) {
 352                 if(daemon->cfg->outgoing_avail_ports[i]) {
 353                         shufport[avail++] = daemon->cfg->
 354                                 outgoing_avail_ports[i];
 355                 }
 356         }
 357         if(avail == 0)
 358                 fatal_exit("no ports are permitted for UDP, add "
 359                         "with outgoing-port-permit");
 360         /* Knuth shuffle */
 361         n = avail;
 362         while(--n > 0) {
 363                 k = ub_random_max(daemon->rand, n+1); /* 0<= k<= n */
 364                 temp = shufport[k];
 365                 shufport[k] = shufport[n];
 366                 shufport[n] = temp;
 367         }
 368         return avail;
 369 }
 370
 371 /**
 372  * Allocate empty worker structures. With backptr and thread-number,
 373  * from 0..numthread initialised. Used as user arguments to new threads.
 374  * Creates the daemon random generator if it does not exist yet.
 375  * The random generator stays existing between reloads with a unique state.
 376  * @param daemon: the daemon with (new) config settings.
 377  */
 378 static void
 379 daemon_create_workers(struct daemon* daemon)
 380 {
 381         int i, numport;
 382         int* shufport;
 383         log_assert(daemon && daemon->cfg);
 384         if(!daemon->rand) {
 385                 unsigned int seed = (unsigned int)time(NULL) ^
 386                         (unsigned int)getpid() ^ 0x438;
 387                 daemon->rand = ub_initstate(seed, NULL);
 388                 if(!daemon->rand)
 389                         fatal_exit("could not init random generator");
 390         }
 391         hash_set_raninit((uint32_t)ub_random(daemon->rand));
 392         shufport = (int*)calloc(65536, sizeof(int));
 393         if(!shufport)
 394                 fatal_exit("out of memory during daemon init");
 395         numport = daemon_get_shufport(daemon, shufport);
 396         verbose(VERB_ALGO, "total of %d outgoing ports available", numport);
 397
 398         daemon->num = (daemon->cfg->num_threads?daemon->cfg->num_threads:1);
 399         daemon->workers = (struct worker**)calloc((size_t)daemon->num,
 400                 sizeof(struct worker*));
 401         for(i=0; i<daemon->num; i++) {
 402                 if(!(daemon->workers[i] = worker_create(daemon, i,
 403                         shufport+numport*i/daemon->num,
 404                         numport*(i+1)/daemon->num - numport*i/daemon->num)))
 405                         /* the above is not ports/numthr, due to rounding */
 406                         fatal_exit("could not create worker");
 407         }
 408         free(shufport);
 409 }
 410
 411 #ifdef THREADS_DISABLED
 412 /**
 413  * Close all pipes except for the numbered thread.
 414  * @param daemon: daemon to close pipes in.
 415  * @param thr: thread number 0..num-1 of thread to skip.
 416  */
 417 static void close_other_pipes(struct daemon* daemon, int thr)
 418 {
 419         int i;
 420         for(i=0; i<daemon->num; i++)
 421                 if(i!=thr) {
 422                         if(i==0) {
 423                                 /* only close read part, need to write stats */
 424                                 tube_close_read(daemon->workers[i]->cmd);
 425                         } else {
 426                                 /* complete close channel to others */
 427                                 tube_delete(daemon->workers[i]->cmd);
 428                                 daemon->workers[i]->cmd = NULL;
 429                         }
 430                 }
 431 }
 432 #endif /* THREADS_DISABLED */
 433
 434 /**
 435  * Function to start one thread.
 436  * @param arg: user argument.
 437  * @return: void* user return value could be used for thread_join results.
 438  */
 439 static void*
 440 thread_start(void* arg)
 441 {
 442         struct worker* worker = (struct worker*)arg;
 443         int port_num = 0;
 444         log_thread_set(&worker->thread_num);
 445         ub_thread_blocksigs();
 446 #ifdef THREADS_DISABLED
 447         /* close pipe ends used by main */
 448         tube_close_write(worker->cmd);
 449         close_other_pipes(worker->daemon, worker->thread_num);
 450 #endif
 451 #if defined(__linux__) && defined(SO_REUSEPORT)
 452         if(worker->daemon->cfg->so_reuseport)
 453                 port_num = worker->thread_num;
 454         else
 455                 port_num = 0;
 456 #endif
 457         if(!worker_init(worker, worker->daemon->cfg,
 458                         worker->daemon->ports[port_num], 0))
 459                 fatal_exit("Could not initialize thread");
 460
 461         worker_work(worker);
 462         return NULL;
 463 }
 464
 465 /**
 466  * Fork and init the other threads. Main thread returns for special handling.
 467  * @param daemon: the daemon with other threads to fork.
 468  */
 469 static void
 470 daemon_start_others(struct daemon* daemon)
 471 {
 472         int i;
 473         log_assert(daemon);
 474         verbose(VERB_ALGO, "start threads");
 475         /* skip i=0, is this thread */
 476         for(i=1; i<daemon->num; i++) {
 477                 ub_thread_create(&daemon->workers[i]->thr_id,
 478                         thread_start, daemon->workers[i]);
 479 #ifdef THREADS_DISABLED
 480                 /* close pipe end of child */
 481                 tube_close_read(daemon->workers[i]->cmd);
 482 #endif /* no threads */
 483         }
 484 }
 485
 486 /**
 487  * Stop the other threads.
 488  * @param daemon: the daemon with other threads.
 489  */
 490 static void
 491 daemon_stop_others(struct daemon* daemon)
 492 {
 493         int i;
 494         log_assert(daemon);
 495         verbose(VERB_ALGO, "stop threads");
 496         /* skip i=0, is this thread */
 497         /* use i=0 buffer for sending cmds; because we are #0 */
 498         for(i=1; i<daemon->num; i++) {
 499                 worker_send_cmd(daemon->workers[i], worker_cmd_quit);
 500         }
 501         /* wait for them to quit */
 502         for(i=1; i<daemon->num; i++) {
 503                 /* join it to make sure its dead */
 504                 verbose(VERB_ALGO, "join %d", i);
 505                 ub_thread_join(daemon->workers[i]->thr_id);
 506                 verbose(VERB_ALGO, "join success %d", i);
 507         }
 508 }
 509
 510 void
 511 daemon_fork(struct daemon* daemon)
 512 {
 513         log_assert(daemon);
 514         if(!acl_list_apply_cfg(daemon->acl, daemon->cfg))
 515                 fatal_exit("Could not setup access control list");
 516         if(!(daemon->local_zones = local_zones_create()))
 517                 fatal_exit("Could not create local zones: out of memory");
 518         if(!local_zones_apply_cfg(daemon->local_zones, daemon->cfg))
 519                 fatal_exit("Could not set up local zones");
 520
 521         /* setup modules */
 522         daemon_setup_modules(daemon);
 523
 524         /* first create all the worker structures, so we can pass
 525          * them to the newly created threads.
 526          */
 527         daemon_create_workers(daemon);
 528
 529 #if defined(HAVE_EV_LOOP) || defined(HAVE_EV_DEFAULT_LOOP)
 530         /* in libev the first inited base gets signals */
 531         if(!worker_init(daemon->workers[0], daemon->cfg, daemon->ports[0], 1))
 532                 fatal_exit("Could not initialize main thread");
 533 #endif
 534
 535         /* Now create the threads and init the workers.
 536          * By the way, this is thread #0 (the main thread).
 537          */
 538         daemon_start_others(daemon);
 539
 540         /* Special handling for the main thread. This is the thread
 541          * that handles signals and remote control.
 542          */
 543 #if !(defined(HAVE_EV_LOOP) || defined(HAVE_EV_DEFAULT_LOOP))
 544         /* libevent has the last inited base get signals (or any base) */
 545         if(!worker_init(daemon->workers[0], daemon->cfg, daemon->ports[0], 1))
 546                 fatal_exit("Could not initialize main thread");
 547 #endif
 548         signal_handling_playback(daemon->workers[0]);
 549
 550         /* Start resolver service on main thread. */
 551         log_info("start of service (%s).", PACKAGE_STRING);
 552         worker_work(daemon->workers[0]);
 553         log_info("service stopped (%s).", PACKAGE_STRING);
 554
 555         /* we exited! a signal happened! Stop other threads */
 556         daemon_stop_others(daemon);
 557
 558         daemon->need_to_exit = daemon->workers[0]->need_to_exit;
 559 }
 560
 561 void
 562 daemon_cleanup(struct daemon* daemon)
 563 {
 564         int i;
 565         log_assert(daemon);
 566         /* before stopping main worker, handle signals ourselves, so we
 567            don't die on multiple reload signals for example. */
 568         signal_handling_record();
 569         log_thread_set(NULL);
 570         /* clean up caches because
 571          * a) RRset IDs will be recycled after a reload, causing collisions
 572          * b) validation config can change, thus rrset, msg, keycache clear
 573          * The infra cache is kept, the timing and edns info is still valid */
 574         slabhash_clear(&daemon->env->rrset_cache->table);
 575         slabhash_clear(daemon->env->msg_cache);
 576         local_zones_delete(daemon->local_zones);
 577         daemon->local_zones = NULL;
 578         /* key cache is cleared by module desetup during next daemon_init() */
 579         daemon_remote_clear(daemon->rc);
 580         for(i=0; i<daemon->num; i++)
 581                 worker_delete(daemon->workers[i]);
 582         free(daemon->workers);
 583         daemon->workers = NULL;
 584         daemon->num = 0;
 585         daemon->cfg = NULL;
 586 }
 587
 588 void
 589 daemon_delete(struct daemon* daemon)
 590 {
 591         size_t i;
 592         if(!daemon)
 593                 return;
 594         modstack_desetup(&daemon->mods, daemon->env);
 595         daemon_remote_delete(daemon->rc);
 596         for(i = 0; i < daemon->num_ports; i++)
 597                 listening_ports_free(daemon->ports[i]);
 598         free(daemon->ports);
 599         listening_ports_free(daemon->rc_ports);
 600         if(daemon->env) {
 601                 slabhash_delete(daemon->env->msg_cache);
 602                 rrset_cache_delete(daemon->env->rrset_cache);
 603                 infra_delete(daemon->env->infra_cache);
 604         }
 605         ub_randfree(daemon->rand);
 606         alloc_clear(&daemon->superalloc);
 607         acl_list_delete(daemon->acl);
 608         free(daemon->chroot);
 609         free(daemon->pidfile);
 610         free(daemon->env);
 611 #ifdef HAVE_SSL
 612         SSL_CTX_free((SSL_CTX*)daemon->listen_sslctx);
 613         SSL_CTX_free((SSL_CTX*)daemon->connect_sslctx);
 614 #endif
 615         free(daemon);
 616 #ifdef LEX_HAS_YYLEX_DESTROY
 617         /* lex cleanup */
 618         ub_c_lex_destroy();
 619 #endif
 620         /* libcrypto cleanup */
 621 #ifdef HAVE_SSL
 622 #  if defined(USE_GOST) && defined(HAVE_LDNS_KEY_EVP_UNLOAD_GOST)
 623         sldns_key_EVP_unload_gost();
 624 #  endif
 625 #  if HAVE_DECL_SSL_COMP_GET_COMPRESSION_METHODS && HAVE_DECL_SK_SSL_COMP_POP_FREE
 626 #    ifndef S_SPLINT_S
 627         sk_SSL_COMP_pop_free(comp_meth, (void(*)())CRYPTO_free);
 628 #    endif
 629 #  endif
 630 #  ifdef HAVE_OPENSSL_CONFIG
 631         EVP_cleanup();
 632         ENGINE_cleanup();
 633         CONF_modules_free();
 634 #  endif
 635         CRYPTO_cleanup_all_ex_data(); /* safe, no more threads right now */
 636         ERR_remove_state(0);
 637         ERR_free_strings();
 638         RAND_cleanup();
 639 #  if defined(HAVE_SSL) && defined(OPENSSL_THREADS) && !defined(THREADS_DISABLED)
 640         ub_openssl_lock_delete();
 641 #  endif
 642 #elif defined(HAVE_NSS)
 643         NSS_Shutdown();
 644 #endif /* HAVE_SSL or HAVE_NSS */
 645         checklock_stop();
 646 #ifdef USE_WINSOCK
 647         if(WSACleanup() != 0) {
 648                 log_err("Could not WSACleanup: %s",
 649                         wsa_strerror(WSAGetLastError()));
 650         }
 651 #endif
 652 }
 653
 654 void daemon_apply_cfg(struct daemon* daemon, struct config_file* cfg)
 655 {
 656         daemon->cfg = cfg;
 657         config_apply(cfg);
 658         if(!daemon->env->msg_cache ||
 659            cfg->msg_cache_size != slabhash_get_size(daemon->env->msg_cache) ||
 660            cfg->msg_cache_slabs != daemon->env->msg_cache->size) {
 661                 slabhash_delete(daemon->env->msg_cache);
 662                 daemon->env->msg_cache = slabhash_create(cfg->msg_cache_slabs,
 663                         HASH_DEFAULT_STARTARRAY, cfg->msg_cache_size,
 664                         msgreply_sizefunc, query_info_compare,
 665                         query_entry_delete, reply_info_delete, NULL);
 666                 if(!daemon->env->msg_cache) {
 667                         fatal_exit("malloc failure updating config settings");
 668                 }
 669         }
 670         if((daemon->env->rrset_cache = rrset_cache_adjust(
 671                 daemon->env->rrset_cache, cfg, &daemon->superalloc)) == 0)
 672                 fatal_exit("malloc failure updating config settings");
 673         if((daemon->env->infra_cache = infra_adjust(daemon->env->infra_cache,
 674                 cfg))==0)
 675                 fatal_exit("malloc failure updating config settings");
 676 }