1/* 2 * Copyright 2016-2022 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10/* We need to use some engine deprecated APIs */ 11#define OPENSSL_SUPPRESS_DEPRECATED 12 13#include "e_os.h" 14#include "crypto/cryptlib.h" 15#include <openssl/err.h> 16#include "crypto/rand.h" 17#include "internal/bio.h" 18#include <openssl/evp.h> 19#include "crypto/evp.h" 20#include "internal/conf.h" 21#include "crypto/async.h" 22#include "crypto/engine.h" 23#include "internal/comp.h" 24#include "internal/err.h" 25#include "crypto/err.h" 26#include "crypto/objects.h" 27#include <stdlib.h> 28#include <assert.h> 29#include "internal/thread_once.h" 30#include "crypto/dso_conf.h" 31#include "internal/dso.h" 32#include "crypto/store.h" 33#include <openssl/cmp_util.h> /* for OSSL_CMP_log_close() */ 34#include <openssl/trace.h> 35#include "crypto/ctype.h" 36 37static int stopped = 0; 38static uint64_t optsdone = 0; 39 40typedef struct ossl_init_stop_st OPENSSL_INIT_STOP; 41struct ossl_init_stop_st { 42 void (*handler)(void); 43 OPENSSL_INIT_STOP *next; 44}; 45 46static OPENSSL_INIT_STOP *stop_handlers = NULL; 47/* Guards access to the optsdone variable on platforms without atomics */ 48static CRYPTO_RWLOCK *optsdone_lock = NULL; 49/* Guards simultaneous INIT_LOAD_CONFIG calls with non-NULL settings */ 50static CRYPTO_RWLOCK *init_lock = NULL; 51static CRYPTO_THREAD_LOCAL in_init_config_local; 52 53static CRYPTO_ONCE base = CRYPTO_ONCE_STATIC_INIT; 54static int base_inited = 0; 55DEFINE_RUN_ONCE_STATIC(ossl_init_base) 56{ 57 /* no need to init trace */ 58 59 OSSL_TRACE(INIT, "ossl_init_base: setting up stop handlers\n"); 60#ifndef OPENSSL_NO_CRYPTO_MDEBUG 61 ossl_malloc_setup_failures(); 62#endif 63 64 if ((optsdone_lock = CRYPTO_THREAD_lock_new()) == NULL 65 || (init_lock = CRYPTO_THREAD_lock_new()) == NULL) 66 goto err; 67 68 OPENSSL_cpuid_setup(); 69 70 if (!ossl_init_thread()) 71 goto err; 72 73 if (!CRYPTO_THREAD_init_local(&in_init_config_local, NULL)) 74 goto err; 75 76 base_inited = 1; 77 return 1; 78 79err: 80 OSSL_TRACE(INIT, "ossl_init_base failed!\n"); 81 CRYPTO_THREAD_lock_free(optsdone_lock); 82 optsdone_lock = NULL; 83 CRYPTO_THREAD_lock_free(init_lock); 84 init_lock = NULL; 85 86 return 0; 87} 88 89static CRYPTO_ONCE register_atexit = CRYPTO_ONCE_STATIC_INIT; 90#if !defined(OPENSSL_SYS_UEFI) && defined(_WIN32) 91static int win32atexit(void) 92{ 93 OPENSSL_cleanup(); 94 return 0; 95} 96#endif 97 98DEFINE_RUN_ONCE_STATIC(ossl_init_register_atexit) 99{ 100#ifdef OPENSSL_INIT_DEBUG 101 fprintf(stderr, "OPENSSL_INIT: ossl_init_register_atexit()\n"); 102#endif 103#ifndef OPENSSL_SYS_UEFI 104# if defined(_WIN32) && !defined(__BORLANDC__) 105 /* We use _onexit() in preference because it gets called on DLL unload */ 106 if (_onexit(win32atexit) == NULL) 107 return 0; 108# else 109 if (atexit(OPENSSL_cleanup) != 0) 110 return 0; 111# endif 112#endif 113 114 return 1; 115} 116 117DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_register_atexit, 118 ossl_init_register_atexit) 119{ 120#ifdef OPENSSL_INIT_DEBUG 121 fprintf(stderr, "OPENSSL_INIT: ossl_init_no_register_atexit ok!\n"); 122#endif 123 /* Do nothing in this case */ 124 return 1; 125} 126 127static CRYPTO_ONCE load_crypto_nodelete = CRYPTO_ONCE_STATIC_INIT; 128DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_nodelete) 129{ 130 OSSL_TRACE(INIT, "ossl_init_load_crypto_nodelete()\n"); 131 132#if !defined(OPENSSL_USE_NODELETE) \ 133 && !defined(OPENSSL_NO_PINSHARED) 134# if defined(DSO_WIN32) && !defined(_WIN32_WCE) 135 { 136 HMODULE handle = NULL; 137 BOOL ret; 138 139 /* We don't use the DSO route for WIN32 because there is a better way */ 140 ret = GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS 141 | GET_MODULE_HANDLE_EX_FLAG_PIN, 142 (void *)&base_inited, &handle); 143 144 OSSL_TRACE1(INIT, 145 "ossl_init_load_crypto_nodelete: " 146 "obtained DSO reference? %s\n", 147 (ret == TRUE ? "No!" : "Yes.")); 148 return (ret == TRUE) ? 1 : 0; 149 } 150# elif !defined(DSO_NONE) 151 /* 152 * Deliberately leak a reference to ourselves. This will force the library 153 * to remain loaded until the atexit() handler is run at process exit. 154 */ 155 { 156 DSO *dso; 157 void *err; 158 159 if (!err_shelve_state(&err)) 160 return 0; 161 162 dso = DSO_dsobyaddr(&base_inited, DSO_FLAG_NO_UNLOAD_ON_FREE); 163 /* 164 * In case of No!, it is uncertain our exit()-handlers can still be 165 * called. After dlclose() the whole library might have been unloaded 166 * already. 167 */ 168 OSSL_TRACE1(INIT, "obtained DSO reference? %s\n", 169 (dso == NULL ? "No!" : "Yes.")); 170 DSO_free(dso); 171 err_unshelve_state(err); 172 } 173# endif 174#endif 175 176 return 1; 177} 178 179static CRYPTO_ONCE load_crypto_strings = CRYPTO_ONCE_STATIC_INIT; 180 181DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_strings) 182{ 183 int ret = 1; 184 /* 185 * OPENSSL_NO_AUTOERRINIT is provided here to prevent at compile time 186 * pulling in all the error strings during static linking 187 */ 188#if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT) 189 OSSL_TRACE(INIT, "ossl_err_load_crypto_strings()\n"); 190 ret = ossl_err_load_crypto_strings(); 191#endif 192 return ret; 193} 194 195DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_load_crypto_strings, 196 ossl_init_load_crypto_strings) 197{ 198 /* Do nothing in this case */ 199 return 1; 200} 201 202static CRYPTO_ONCE add_all_ciphers = CRYPTO_ONCE_STATIC_INIT; 203DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_ciphers) 204{ 205 /* 206 * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time 207 * pulling in all the ciphers during static linking 208 */ 209#ifndef OPENSSL_NO_AUTOALGINIT 210 OSSL_TRACE(INIT, "openssl_add_all_ciphers_int()\n"); 211 openssl_add_all_ciphers_int(); 212#endif 213 return 1; 214} 215 216DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_ciphers, 217 ossl_init_add_all_ciphers) 218{ 219 /* Do nothing */ 220 return 1; 221} 222 223static CRYPTO_ONCE add_all_digests = CRYPTO_ONCE_STATIC_INIT; 224DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_digests) 225{ 226 /* 227 * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time 228 * pulling in all the ciphers during static linking 229 */ 230#ifndef OPENSSL_NO_AUTOALGINIT 231 OSSL_TRACE(INIT, "openssl_add_all_digests()\n"); 232 openssl_add_all_digests_int(); 233#endif 234 return 1; 235} 236 237DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_digests, 238 ossl_init_add_all_digests) 239{ 240 /* Do nothing */ 241 return 1; 242} 243 244static CRYPTO_ONCE config = CRYPTO_ONCE_STATIC_INIT; 245static int config_inited = 0; 246static const OPENSSL_INIT_SETTINGS *conf_settings = NULL; 247DEFINE_RUN_ONCE_STATIC(ossl_init_config) 248{ 249 int ret = ossl_config_int(NULL); 250 251 config_inited = 1; 252 return ret; 253} 254DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_config_settings, ossl_init_config) 255{ 256 int ret = ossl_config_int(conf_settings); 257 258 config_inited = 1; 259 return ret; 260} 261DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_config, ossl_init_config) 262{ 263 OSSL_TRACE(INIT, "ossl_no_config_int()\n"); 264 ossl_no_config_int(); 265 config_inited = 1; 266 return 1; 267} 268 269static CRYPTO_ONCE async = CRYPTO_ONCE_STATIC_INIT; 270static int async_inited = 0; 271DEFINE_RUN_ONCE_STATIC(ossl_init_async) 272{ 273 OSSL_TRACE(INIT, "async_init()\n"); 274 if (!async_init()) 275 return 0; 276 async_inited = 1; 277 return 1; 278} 279 280#ifndef OPENSSL_NO_ENGINE 281static CRYPTO_ONCE engine_openssl = CRYPTO_ONCE_STATIC_INIT; 282DEFINE_RUN_ONCE_STATIC(ossl_init_engine_openssl) 283{ 284 OSSL_TRACE(INIT, "engine_load_openssl_int()\n"); 285 engine_load_openssl_int(); 286 return 1; 287} 288# ifndef OPENSSL_NO_RDRAND 289static CRYPTO_ONCE engine_rdrand = CRYPTO_ONCE_STATIC_INIT; 290DEFINE_RUN_ONCE_STATIC(ossl_init_engine_rdrand) 291{ 292 OSSL_TRACE(INIT, "engine_load_rdrand_int()\n"); 293 engine_load_rdrand_int(); 294 return 1; 295} 296# endif 297static CRYPTO_ONCE engine_dynamic = CRYPTO_ONCE_STATIC_INIT; 298DEFINE_RUN_ONCE_STATIC(ossl_init_engine_dynamic) 299{ 300 OSSL_TRACE(INIT, "engine_load_dynamic_int()\n"); 301 engine_load_dynamic_int(); 302 return 1; 303} 304# ifndef OPENSSL_NO_STATIC_ENGINE 305# ifndef OPENSSL_NO_DEVCRYPTOENG 306static CRYPTO_ONCE engine_devcrypto = CRYPTO_ONCE_STATIC_INIT; 307DEFINE_RUN_ONCE_STATIC(ossl_init_engine_devcrypto) 308{ 309 OSSL_TRACE(INIT, "engine_load_devcrypto_int()\n"); 310 engine_load_devcrypto_int(); 311 return 1; 312} 313# endif 314# if !defined(OPENSSL_NO_PADLOCKENG) 315static CRYPTO_ONCE engine_padlock = CRYPTO_ONCE_STATIC_INIT; 316DEFINE_RUN_ONCE_STATIC(ossl_init_engine_padlock) 317{ 318 OSSL_TRACE(INIT, "engine_load_padlock_int()\n"); 319 engine_load_padlock_int(); 320 return 1; 321} 322# endif 323# if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG) 324static CRYPTO_ONCE engine_capi = CRYPTO_ONCE_STATIC_INIT; 325DEFINE_RUN_ONCE_STATIC(ossl_init_engine_capi) 326{ 327 OSSL_TRACE(INIT, "engine_load_capi_int()\n"); 328 engine_load_capi_int(); 329 return 1; 330} 331# endif 332# if !defined(OPENSSL_NO_AFALGENG) 333static CRYPTO_ONCE engine_afalg = CRYPTO_ONCE_STATIC_INIT; 334DEFINE_RUN_ONCE_STATIC(ossl_init_engine_afalg) 335{ 336 OSSL_TRACE(INIT, "engine_load_afalg_int()\n"); 337 engine_load_afalg_int(); 338 return 1; 339} 340# endif 341# endif 342#endif 343 344void OPENSSL_cleanup(void) 345{ 346 OPENSSL_INIT_STOP *currhandler, *lasthandler; 347 348 /* 349 * At some point we should consider looking at this function with a view to 350 * moving most/all of this into onfree handlers in OSSL_LIB_CTX. 351 */ 352 353 /* If we've not been inited then no need to deinit */ 354 if (!base_inited) 355 return; 356 357 /* Might be explicitly called and also by atexit */ 358 if (stopped) 359 return; 360 stopped = 1; 361 362 /* 363 * Thread stop may not get automatically called by the thread library for 364 * the very last thread in some situations, so call it directly. 365 */ 366 OPENSSL_thread_stop(); 367 368 currhandler = stop_handlers; 369 while (currhandler != NULL) { 370 currhandler->handler(); 371 lasthandler = currhandler; 372 currhandler = currhandler->next; 373 OPENSSL_free(lasthandler); 374 } 375 stop_handlers = NULL; 376 377 CRYPTO_THREAD_lock_free(optsdone_lock); 378 optsdone_lock = NULL; 379 CRYPTO_THREAD_lock_free(init_lock); 380 init_lock = NULL; 381 382 CRYPTO_THREAD_cleanup_local(&in_init_config_local); 383 384 /* 385 * We assume we are single-threaded for this function, i.e. no race 386 * conditions for the various "*_inited" vars below. 387 */ 388 389#ifndef OPENSSL_NO_COMP 390 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_comp_zlib_cleanup()\n"); 391 ossl_comp_zlib_cleanup(); 392#endif 393 394 if (async_inited) { 395 OSSL_TRACE(INIT, "OPENSSL_cleanup: async_deinit()\n"); 396 async_deinit(); 397 } 398 399 /* 400 * Note that cleanup order is important: 401 * - ossl_rand_cleanup_int could call an ENGINE's RAND cleanup function so 402 * must be called before engine_cleanup_int() 403 * - ENGINEs use CRYPTO_EX_DATA and therefore, must be cleaned up 404 * before the ex data handlers are wiped during default ossl_lib_ctx deinit. 405 * - ossl_config_modules_free() can end up in ENGINE code so must be called 406 * before engine_cleanup_int() 407 * - ENGINEs and additional EVP algorithms might use added OIDs names so 408 * ossl_obj_cleanup_int() must be called last 409 */ 410 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_rand_cleanup_int()\n"); 411 ossl_rand_cleanup_int(); 412 413 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_config_modules_free()\n"); 414 ossl_config_modules_free(); 415 416#ifndef OPENSSL_NO_ENGINE 417 OSSL_TRACE(INIT, "OPENSSL_cleanup: engine_cleanup_int()\n"); 418 engine_cleanup_int(); 419#endif 420 421#ifndef OPENSSL_NO_DEPRECATED_3_0 422 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_store_cleanup_int()\n"); 423 ossl_store_cleanup_int(); 424#endif 425 426 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_lib_ctx_default_deinit()\n"); 427 ossl_lib_ctx_default_deinit(); 428 429 ossl_cleanup_thread(); 430 431 OSSL_TRACE(INIT, "OPENSSL_cleanup: bio_cleanup()\n"); 432 bio_cleanup(); 433 434 OSSL_TRACE(INIT, "OPENSSL_cleanup: evp_cleanup_int()\n"); 435 evp_cleanup_int(); 436 437 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_obj_cleanup_int()\n"); 438 ossl_obj_cleanup_int(); 439 440 OSSL_TRACE(INIT, "OPENSSL_cleanup: err_int()\n"); 441 err_cleanup(); 442 443 OSSL_TRACE(INIT, "OPENSSL_cleanup: CRYPTO_secure_malloc_done()\n"); 444 CRYPTO_secure_malloc_done(); 445 446#ifndef OPENSSL_NO_CMP 447 OSSL_TRACE(INIT, "OPENSSL_cleanup: OSSL_CMP_log_close()\n"); 448 OSSL_CMP_log_close(); 449#endif 450 451 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_trace_cleanup()\n"); 452 ossl_trace_cleanup(); 453 454 base_inited = 0; 455} 456 457/* 458 * If this function is called with a non NULL settings value then it must be 459 * called prior to any threads making calls to any OpenSSL functions, 460 * i.e. passing a non-null settings value is assumed to be single-threaded. 461 */ 462int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) 463{ 464 uint64_t tmp; 465 int aloaddone = 0; 466 467 /* Applications depend on 0 being returned when cleanup was already done */ 468 if (stopped) { 469 if (!(opts & OPENSSL_INIT_BASE_ONLY)) 470 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INIT_FAIL); 471 return 0; 472 } 473 474 /* 475 * We ignore failures from this function. It is probably because we are 476 * on a platform that doesn't support lockless atomic loads (we may not 477 * have created optsdone_lock yet so we can't use it). This is just an 478 * optimisation to skip the full checks in this function if we don't need 479 * to, so we carry on regardless in the event of failure. 480 * 481 * There could be a race here with other threads, so that optsdone has not 482 * been updated yet, even though the options have in fact been initialised. 483 * This doesn't matter - it just means we will run the full function 484 * unnecessarily - but all the critical code is contained in RUN_ONCE 485 * functions anyway so we are safe. 486 */ 487 if (CRYPTO_atomic_load(&optsdone, &tmp, NULL)) { 488 if ((tmp & opts) == opts) 489 return 1; 490 aloaddone = 1; 491 } 492 493 /* 494 * At some point we should look at this function with a view to moving 495 * most/all of this into OSSL_LIB_CTX. 496 * 497 * When the caller specifies OPENSSL_INIT_BASE_ONLY, that should be the 498 * *only* option specified. With that option we return immediately after 499 * doing the requested limited initialization. Note that 500 * err_shelve_state() called by us via ossl_init_load_crypto_nodelete() 501 * re-enters OPENSSL_init_crypto() with OPENSSL_INIT_BASE_ONLY, but with 502 * base already initialized this is a harmless NOOP. 503 * 504 * If we remain the only caller of err_shelve_state() the recursion should 505 * perhaps be removed, but if in doubt, it can be left in place. 506 */ 507 if (!RUN_ONCE(&base, ossl_init_base)) 508 return 0; 509 510 if (opts & OPENSSL_INIT_BASE_ONLY) 511 return 1; 512 513 /* 514 * optsdone_lock should definitely be set up now, so we can now repeat the 515 * same check from above but be sure that it will work even on platforms 516 * without lockless CRYPTO_atomic_load 517 */ 518 if (!aloaddone) { 519 if (!CRYPTO_atomic_load(&optsdone, &tmp, optsdone_lock)) 520 return 0; 521 if ((tmp & opts) == opts) 522 return 1; 523 } 524 525 /* 526 * Now we don't always set up exit handlers, the INIT_BASE_ONLY calls 527 * should not have the side-effect of setting up exit handlers, and 528 * therefore, this code block is below the INIT_BASE_ONLY-conditioned early 529 * return above. 530 */ 531 if ((opts & OPENSSL_INIT_NO_ATEXIT) != 0) { 532 if (!RUN_ONCE_ALT(®ister_atexit, ossl_init_no_register_atexit, 533 ossl_init_register_atexit)) 534 return 0; 535 } else if (!RUN_ONCE(®ister_atexit, ossl_init_register_atexit)) { 536 return 0; 537 } 538 539 if (!RUN_ONCE(&load_crypto_nodelete, ossl_init_load_crypto_nodelete)) 540 return 0; 541 542 if ((opts & OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS) 543 && !RUN_ONCE_ALT(&load_crypto_strings, 544 ossl_init_no_load_crypto_strings, 545 ossl_init_load_crypto_strings)) 546 return 0; 547 548 if ((opts & OPENSSL_INIT_LOAD_CRYPTO_STRINGS) 549 && !RUN_ONCE(&load_crypto_strings, ossl_init_load_crypto_strings)) 550 return 0; 551 552 if ((opts & OPENSSL_INIT_NO_ADD_ALL_CIPHERS) 553 && !RUN_ONCE_ALT(&add_all_ciphers, ossl_init_no_add_all_ciphers, 554 ossl_init_add_all_ciphers)) 555 return 0; 556 557 if ((opts & OPENSSL_INIT_ADD_ALL_CIPHERS) 558 && !RUN_ONCE(&add_all_ciphers, ossl_init_add_all_ciphers)) 559 return 0; 560 561 if ((opts & OPENSSL_INIT_NO_ADD_ALL_DIGESTS) 562 && !RUN_ONCE_ALT(&add_all_digests, ossl_init_no_add_all_digests, 563 ossl_init_add_all_digests)) 564 return 0; 565 566 if ((opts & OPENSSL_INIT_ADD_ALL_DIGESTS) 567 && !RUN_ONCE(&add_all_digests, ossl_init_add_all_digests)) 568 return 0; 569 570 if ((opts & OPENSSL_INIT_ATFORK) 571 && !openssl_init_fork_handlers()) 572 return 0; 573 574 if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) 575 && !RUN_ONCE_ALT(&config, ossl_init_no_config, ossl_init_config)) 576 return 0; 577 578 if (opts & OPENSSL_INIT_LOAD_CONFIG) { 579 int loading = CRYPTO_THREAD_get_local(&in_init_config_local) != NULL; 580 581 /* If called recursively from OBJ_ calls, just skip it. */ 582 if (!loading) { 583 int ret; 584 585 if (!CRYPTO_THREAD_set_local(&in_init_config_local, (void *)-1)) 586 return 0; 587 if (settings == NULL) { 588 ret = RUN_ONCE(&config, ossl_init_config); 589 } else { 590 if (!CRYPTO_THREAD_write_lock(init_lock)) 591 return 0; 592 conf_settings = settings; 593 ret = RUN_ONCE_ALT(&config, ossl_init_config_settings, 594 ossl_init_config); 595 conf_settings = NULL; 596 CRYPTO_THREAD_unlock(init_lock); 597 } 598 599 if (ret <= 0) 600 return 0; 601 } 602 } 603 604 if ((opts & OPENSSL_INIT_ASYNC) 605 && !RUN_ONCE(&async, ossl_init_async)) 606 return 0; 607 608#ifndef OPENSSL_NO_ENGINE 609 if ((opts & OPENSSL_INIT_ENGINE_OPENSSL) 610 && !RUN_ONCE(&engine_openssl, ossl_init_engine_openssl)) 611 return 0; 612# ifndef OPENSSL_NO_RDRAND 613 if ((opts & OPENSSL_INIT_ENGINE_RDRAND) 614 && !RUN_ONCE(&engine_rdrand, ossl_init_engine_rdrand)) 615 return 0; 616# endif 617 if ((opts & OPENSSL_INIT_ENGINE_DYNAMIC) 618 && !RUN_ONCE(&engine_dynamic, ossl_init_engine_dynamic)) 619 return 0; 620# ifndef OPENSSL_NO_STATIC_ENGINE 621# ifndef OPENSSL_NO_DEVCRYPTOENG 622 if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV) 623 && !RUN_ONCE(&engine_devcrypto, ossl_init_engine_devcrypto)) 624 return 0; 625# endif 626# if !defined(OPENSSL_NO_PADLOCKENG) 627 if ((opts & OPENSSL_INIT_ENGINE_PADLOCK) 628 && !RUN_ONCE(&engine_padlock, ossl_init_engine_padlock)) 629 return 0; 630# endif 631# if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG) 632 if ((opts & OPENSSL_INIT_ENGINE_CAPI) 633 && !RUN_ONCE(&engine_capi, ossl_init_engine_capi)) 634 return 0; 635# endif 636# if !defined(OPENSSL_NO_AFALGENG) 637 if ((opts & OPENSSL_INIT_ENGINE_AFALG) 638 && !RUN_ONCE(&engine_afalg, ossl_init_engine_afalg)) 639 return 0; 640# endif 641# endif 642 if (opts & (OPENSSL_INIT_ENGINE_ALL_BUILTIN 643 | OPENSSL_INIT_ENGINE_OPENSSL 644 | OPENSSL_INIT_ENGINE_AFALG)) { 645 ENGINE_register_all_complete(); 646 } 647#endif 648 649 if (!CRYPTO_atomic_or(&optsdone, opts, &tmp, optsdone_lock)) 650 return 0; 651 652 return 1; 653} 654 655int OPENSSL_atexit(void (*handler)(void)) 656{ 657 OPENSSL_INIT_STOP *newhand; 658 659#if !defined(OPENSSL_USE_NODELETE)\ 660 && !defined(OPENSSL_NO_PINSHARED) 661 { 662# if defined(DSO_WIN32) && !defined(_WIN32_WCE) 663 HMODULE handle = NULL; 664 BOOL ret; 665 union { 666 void *sym; 667 void (*func)(void); 668 } handlersym; 669 670 handlersym.func = handler; 671 672 /* 673 * We don't use the DSO route for WIN32 because there is a better 674 * way 675 */ 676 ret = GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS 677 | GET_MODULE_HANDLE_EX_FLAG_PIN, 678 handlersym.sym, &handle); 679 680 if (!ret) 681 return 0; 682# elif !defined(DSO_NONE) 683 /* 684 * Deliberately leak a reference to the handler. This will force the 685 * library/code containing the handler to remain loaded until we run the 686 * atexit handler. If -znodelete has been used then this is 687 * unnecessary. 688 */ 689 DSO *dso = NULL; 690 union { 691 void *sym; 692 void (*func)(void); 693 } handlersym; 694 695 handlersym.func = handler; 696 697 ERR_set_mark(); 698 dso = DSO_dsobyaddr(handlersym.sym, DSO_FLAG_NO_UNLOAD_ON_FREE); 699 /* See same code above in ossl_init_base() for an explanation. */ 700 OSSL_TRACE1(INIT, 701 "atexit: obtained DSO reference? %s\n", 702 (dso == NULL ? "No!" : "Yes.")); 703 DSO_free(dso); 704 ERR_pop_to_mark(); 705# endif 706 } 707#endif 708 709 if ((newhand = OPENSSL_malloc(sizeof(*newhand))) == NULL) { 710 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE); 711 return 0; 712 } 713 714 newhand->handler = handler; 715 newhand->next = stop_handlers; 716 stop_handlers = newhand; 717 718 return 1; 719} 720 721