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source: vbox/trunk/src/libs/openssl-3.1.7/crypto/init.c@ 105945

最後變更 在這個檔案從105945是 105945,由 vboxsync 提交於 7 月 前

openssl-3.1.7: Applied and adjusted our OpenSSL changes to 3.1.7. bugref:10757
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1/*
2 * Copyright 2016-2024 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 "internal/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#ifndef OPENSSL_NO_ATEXIT
101# ifdef OPENSSL_INIT_DEBUG
102 fprintf(stderr, "OPENSSL_INIT: ossl_init_register_atexit()\n");
103# endif
104# ifndef OPENSSL_SYS_UEFI
105# if defined(_WIN32) && !defined(__BORLANDC__)
106 /* We use _onexit() in preference because it gets called on DLL unload */
107 if (_onexit(win32atexit) == NULL)
108 return 0;
109# else
110 if (atexit(OPENSSL_cleanup) != 0)
111 return 0;
112# endif
113# endif
114#endif
115
116 return 1;
117}
118
119DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_register_atexit,
120 ossl_init_register_atexit)
121{
122#ifdef OPENSSL_INIT_DEBUG
123 fprintf(stderr, "OPENSSL_INIT: ossl_init_no_register_atexit ok!\n");
124#endif
125 /* Do nothing in this case */
126 return 1;
127}
128
129static CRYPTO_ONCE load_crypto_nodelete = CRYPTO_ONCE_STATIC_INIT;
130DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_nodelete)
131{
132 OSSL_TRACE(INIT, "ossl_init_load_crypto_nodelete()\n");
133
134#if !defined(OPENSSL_USE_NODELETE) \
135 && !defined(OPENSSL_NO_PINSHARED)
136# if defined(DSO_WIN32) && !defined(_WIN32_WCE)
137 {
138 HMODULE handle = NULL;
139 BOOL ret;
140
141 /* We don't use the DSO route for WIN32 because there is a better way */
142 ret = GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
143 | GET_MODULE_HANDLE_EX_FLAG_PIN,
144 (void *)&base_inited, &handle);
145
146 OSSL_TRACE1(INIT,
147 "ossl_init_load_crypto_nodelete: "
148 "obtained DSO reference? %s\n",
149 (ret == TRUE ? "No!" : "Yes."));
150 return (ret == TRUE) ? 1 : 0;
151 }
152# elif !defined(DSO_NONE)
153 /*
154 * Deliberately leak a reference to ourselves. This will force the library
155 * to remain loaded until the atexit() handler is run at process exit.
156 */
157 {
158 DSO *dso;
159 void *err;
160
161 if (!err_shelve_state(&err))
162 return 0;
163
164 dso = DSO_dsobyaddr(&base_inited, DSO_FLAG_NO_UNLOAD_ON_FREE);
165 /*
166 * In case of No!, it is uncertain our exit()-handlers can still be
167 * called. After dlclose() the whole library might have been unloaded
168 * already.
169 */
170 OSSL_TRACE1(INIT, "obtained DSO reference? %s\n",
171 (dso == NULL ? "No!" : "Yes."));
172 DSO_free(dso);
173 err_unshelve_state(err);
174 }
175# endif
176#endif
177
178 return 1;
179}
180
181static CRYPTO_ONCE load_crypto_strings = CRYPTO_ONCE_STATIC_INIT;
182
183DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_strings)
184{
185 int ret = 1;
186 /*
187 * OPENSSL_NO_AUTOERRINIT is provided here to prevent at compile time
188 * pulling in all the error strings during static linking
189 */
190#if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT)
191 OSSL_TRACE(INIT, "ossl_err_load_crypto_strings()\n");
192 ret = ossl_err_load_crypto_strings();
193#endif
194 return ret;
195}
196
197DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_load_crypto_strings,
198 ossl_init_load_crypto_strings)
199{
200 /* Do nothing in this case */
201 return 1;
202}
203
204static CRYPTO_ONCE add_all_ciphers = CRYPTO_ONCE_STATIC_INIT;
205DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_ciphers)
206{
207 /*
208 * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time
209 * pulling in all the ciphers during static linking
210 */
211#ifndef OPENSSL_NO_AUTOALGINIT
212 OSSL_TRACE(INIT, "openssl_add_all_ciphers_int()\n");
213 openssl_add_all_ciphers_int();
214#endif
215 return 1;
216}
217
218DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_ciphers,
219 ossl_init_add_all_ciphers)
220{
221 /* Do nothing */
222 return 1;
223}
224
225static CRYPTO_ONCE add_all_digests = CRYPTO_ONCE_STATIC_INIT;
226DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_digests)
227{
228 /*
229 * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time
230 * pulling in all the ciphers during static linking
231 */
232#ifndef OPENSSL_NO_AUTOALGINIT
233 OSSL_TRACE(INIT, "openssl_add_all_digests()\n");
234 openssl_add_all_digests_int();
235#endif
236 return 1;
237}
238
239DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_digests,
240 ossl_init_add_all_digests)
241{
242 /* Do nothing */
243 return 1;
244}
245
246static CRYPTO_ONCE config = CRYPTO_ONCE_STATIC_INIT;
247static int config_inited = 0;
248static const OPENSSL_INIT_SETTINGS *conf_settings = NULL;
249DEFINE_RUN_ONCE_STATIC(ossl_init_config)
250{
251 int ret = ossl_config_int(NULL);
252
253 config_inited = 1;
254 return ret;
255}
256DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_config_settings, ossl_init_config)
257{
258 int ret = ossl_config_int(conf_settings);
259
260 config_inited = 1;
261 return ret;
262}
263DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_config, ossl_init_config)
264{
265 OSSL_TRACE(INIT, "ossl_no_config_int()\n");
266 ossl_no_config_int();
267 config_inited = 1;
268 return 1;
269}
270
271static CRYPTO_ONCE async = CRYPTO_ONCE_STATIC_INIT;
272static int async_inited = 0;
273DEFINE_RUN_ONCE_STATIC(ossl_init_async)
274{
275 OSSL_TRACE(INIT, "async_init()\n");
276 if (!async_init())
277 return 0;
278 async_inited = 1;
279 return 1;
280}
281
282#ifndef OPENSSL_NO_ENGINE
283static CRYPTO_ONCE engine_openssl = CRYPTO_ONCE_STATIC_INIT;
284DEFINE_RUN_ONCE_STATIC(ossl_init_engine_openssl)
285{
286 OSSL_TRACE(INIT, "engine_load_openssl_int()\n");
287 engine_load_openssl_int();
288 return 1;
289}
290# ifndef OPENSSL_NO_RDRAND
291static CRYPTO_ONCE engine_rdrand = CRYPTO_ONCE_STATIC_INIT;
292DEFINE_RUN_ONCE_STATIC(ossl_init_engine_rdrand)
293{
294 OSSL_TRACE(INIT, "engine_load_rdrand_int()\n");
295 engine_load_rdrand_int();
296 return 1;
297}
298# endif
299static CRYPTO_ONCE engine_dynamic = CRYPTO_ONCE_STATIC_INIT;
300DEFINE_RUN_ONCE_STATIC(ossl_init_engine_dynamic)
301{
302 OSSL_TRACE(INIT, "engine_load_dynamic_int()\n");
303 engine_load_dynamic_int();
304 return 1;
305}
306# ifndef OPENSSL_NO_STATIC_ENGINE
307# ifndef OPENSSL_NO_DEVCRYPTOENG
308static CRYPTO_ONCE engine_devcrypto = CRYPTO_ONCE_STATIC_INIT;
309DEFINE_RUN_ONCE_STATIC(ossl_init_engine_devcrypto)
310{
311 OSSL_TRACE(INIT, "engine_load_devcrypto_int()\n");
312 engine_load_devcrypto_int();
313 return 1;
314}
315# endif
316# if !defined(OPENSSL_NO_PADLOCKENG)
317static CRYPTO_ONCE engine_padlock = CRYPTO_ONCE_STATIC_INIT;
318DEFINE_RUN_ONCE_STATIC(ossl_init_engine_padlock)
319{
320 OSSL_TRACE(INIT, "engine_load_padlock_int()\n");
321 engine_load_padlock_int();
322 return 1;
323}
324# endif
325# if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG)
326static CRYPTO_ONCE engine_capi = CRYPTO_ONCE_STATIC_INIT;
327DEFINE_RUN_ONCE_STATIC(ossl_init_engine_capi)
328{
329 OSSL_TRACE(INIT, "engine_load_capi_int()\n");
330 engine_load_capi_int();
331 return 1;
332}
333# endif
334# if !defined(OPENSSL_NO_AFALGENG)
335static CRYPTO_ONCE engine_afalg = CRYPTO_ONCE_STATIC_INIT;
336DEFINE_RUN_ONCE_STATIC(ossl_init_engine_afalg)
337{
338 OSSL_TRACE(INIT, "engine_load_afalg_int()\n");
339 engine_load_afalg_int();
340 return 1;
341}
342# endif
343# endif
344#endif
345
346void OPENSSL_cleanup(void)
347{
348 OPENSSL_INIT_STOP *currhandler, *lasthandler;
349
350 /*
351 * At some point we should consider looking at this function with a view to
352 * moving most/all of this into onfree handlers in OSSL_LIB_CTX.
353 */
354
355 /* If we've not been inited then no need to deinit */
356 if (!base_inited)
357 return;
358
359 /* Might be explicitly called and also by atexit */
360 if (stopped)
361 return;
362 stopped = 1;
363
364 /*
365 * Thread stop may not get automatically called by the thread library for
366 * the very last thread in some situations, so call it directly.
367 */
368 OPENSSL_thread_stop();
369
370 currhandler = stop_handlers;
371 while (currhandler != NULL) {
372 currhandler->handler();
373 lasthandler = currhandler;
374 currhandler = currhandler->next;
375 OPENSSL_free(lasthandler);
376 }
377 stop_handlers = NULL;
378
379 CRYPTO_THREAD_lock_free(optsdone_lock);
380 optsdone_lock = NULL;
381 CRYPTO_THREAD_lock_free(init_lock);
382 init_lock = NULL;
383
384 CRYPTO_THREAD_cleanup_local(&in_init_config_local);
385
386 /*
387 * We assume we are single-threaded for this function, i.e. no race
388 * conditions for the various "*_inited" vars below.
389 */
390
391#ifndef OPENSSL_NO_COMP
392 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_comp_zlib_cleanup()\n");
393 ossl_comp_zlib_cleanup();
394#endif
395
396 if (async_inited) {
397 OSSL_TRACE(INIT, "OPENSSL_cleanup: async_deinit()\n");
398 async_deinit();
399 }
400
401 /*
402 * Note that cleanup order is important:
403 * - ossl_rand_cleanup_int could call an ENGINE's RAND cleanup function so
404 * must be called before engine_cleanup_int()
405 * - ENGINEs use CRYPTO_EX_DATA and therefore, must be cleaned up
406 * before the ex data handlers are wiped during default ossl_lib_ctx deinit.
407 * - ossl_config_modules_free() can end up in ENGINE code so must be called
408 * before engine_cleanup_int()
409 * - ENGINEs and additional EVP algorithms might use added OIDs names so
410 * ossl_obj_cleanup_int() must be called last
411 */
412 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_rand_cleanup_int()\n");
413 ossl_rand_cleanup_int();
414
415 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_config_modules_free()\n");
416 ossl_config_modules_free();
417
418#ifndef OPENSSL_NO_ENGINE
419 OSSL_TRACE(INIT, "OPENSSL_cleanup: engine_cleanup_int()\n");
420 engine_cleanup_int();
421#endif
422
423#ifndef OPENSSL_NO_DEPRECATED_3_0
424 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_store_cleanup_int()\n");
425 ossl_store_cleanup_int();
426#endif
427
428 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_lib_ctx_default_deinit()\n");
429 ossl_lib_ctx_default_deinit();
430
431 ossl_cleanup_thread();
432
433 OSSL_TRACE(INIT, "OPENSSL_cleanup: bio_cleanup()\n");
434 bio_cleanup();
435
436 OSSL_TRACE(INIT, "OPENSSL_cleanup: evp_cleanup_int()\n");
437 evp_cleanup_int();
438
439 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_obj_cleanup_int()\n");
440 ossl_obj_cleanup_int();
441
442 OSSL_TRACE(INIT, "OPENSSL_cleanup: err_int()\n");
443 err_cleanup();
444
445 OSSL_TRACE(INIT, "OPENSSL_cleanup: CRYPTO_secure_malloc_done()\n");
446 CRYPTO_secure_malloc_done();
447
448#ifndef OPENSSL_NO_CMP
449 OSSL_TRACE(INIT, "OPENSSL_cleanup: OSSL_CMP_log_close()\n");
450 OSSL_CMP_log_close();
451#endif
452
453 OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_trace_cleanup()\n");
454 ossl_trace_cleanup();
455
456 base_inited = 0;
457}
458
459/*
460 * If this function is called with a non NULL settings value then it must be
461 * called prior to any threads making calls to any OpenSSL functions,
462 * i.e. passing a non-null settings value is assumed to be single-threaded.
463 */
464int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings)
465{
466 uint64_t tmp;
467 int aloaddone = 0;
468
469 /* Applications depend on 0 being returned when cleanup was already done */
470 if (stopped) {
471 if (!(opts & OPENSSL_INIT_BASE_ONLY))
472 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INIT_FAIL);
473 return 0;
474 }
475
476 /*
477 * We ignore failures from this function. It is probably because we are
478 * on a platform that doesn't support lockless atomic loads (we may not
479 * have created optsdone_lock yet so we can't use it). This is just an
480 * optimisation to skip the full checks in this function if we don't need
481 * to, so we carry on regardless in the event of failure.
482 *
483 * There could be a race here with other threads, so that optsdone has not
484 * been updated yet, even though the options have in fact been initialised.
485 * This doesn't matter - it just means we will run the full function
486 * unnecessarily - but all the critical code is contained in RUN_ONCE
487 * functions anyway so we are safe.
488 */
489 if (CRYPTO_atomic_load(&optsdone, &tmp, NULL)) {
490 if ((tmp & opts) == opts)
491 return 1;
492 aloaddone = 1;
493 }
494
495 /*
496 * At some point we should look at this function with a view to moving
497 * most/all of this into OSSL_LIB_CTX.
498 *
499 * When the caller specifies OPENSSL_INIT_BASE_ONLY, that should be the
500 * *only* option specified. With that option we return immediately after
501 * doing the requested limited initialization. Note that
502 * err_shelve_state() called by us via ossl_init_load_crypto_nodelete()
503 * re-enters OPENSSL_init_crypto() with OPENSSL_INIT_BASE_ONLY, but with
504 * base already initialized this is a harmless NOOP.
505 *
506 * If we remain the only caller of err_shelve_state() the recursion should
507 * perhaps be removed, but if in doubt, it can be left in place.
508 */
509 if (!RUN_ONCE(&base, ossl_init_base))
510 return 0;
511
512 if (opts & OPENSSL_INIT_BASE_ONLY)
513 return 1;
514
515 /*
516 * optsdone_lock should definitely be set up now, so we can now repeat the
517 * same check from above but be sure that it will work even on platforms
518 * without lockless CRYPTO_atomic_load
519 */
520 if (!aloaddone) {
521 if (!CRYPTO_atomic_load(&optsdone, &tmp, optsdone_lock))
522 return 0;
523 if ((tmp & opts) == opts)
524 return 1;
525 }
526
527 /*
528 * Now we don't always set up exit handlers, the INIT_BASE_ONLY calls
529 * should not have the side-effect of setting up exit handlers, and
530 * therefore, this code block is below the INIT_BASE_ONLY-conditioned early
531 * return above.
532 */
533 if ((opts & OPENSSL_INIT_NO_ATEXIT) != 0) {
534 if (!RUN_ONCE_ALT(&register_atexit, ossl_init_no_register_atexit,
535 ossl_init_register_atexit))
536 return 0;
537 } else if (!RUN_ONCE(&register_atexit, ossl_init_register_atexit)) {
538 return 0;
539 }
540
541 if (!RUN_ONCE(&load_crypto_nodelete, ossl_init_load_crypto_nodelete))
542 return 0;
543
544 if ((opts & OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS)
545 && !RUN_ONCE_ALT(&load_crypto_strings,
546 ossl_init_no_load_crypto_strings,
547 ossl_init_load_crypto_strings))
548 return 0;
549
550 if ((opts & OPENSSL_INIT_LOAD_CRYPTO_STRINGS)
551 && !RUN_ONCE(&load_crypto_strings, ossl_init_load_crypto_strings))
552 return 0;
553
554 if ((opts & OPENSSL_INIT_NO_ADD_ALL_CIPHERS)
555 && !RUN_ONCE_ALT(&add_all_ciphers, ossl_init_no_add_all_ciphers,
556 ossl_init_add_all_ciphers))
557 return 0;
558
559 if ((opts & OPENSSL_INIT_ADD_ALL_CIPHERS)
560 && !RUN_ONCE(&add_all_ciphers, ossl_init_add_all_ciphers))
561 return 0;
562
563 if ((opts & OPENSSL_INIT_NO_ADD_ALL_DIGESTS)
564 && !RUN_ONCE_ALT(&add_all_digests, ossl_init_no_add_all_digests,
565 ossl_init_add_all_digests))
566 return 0;
567
568 if ((opts & OPENSSL_INIT_ADD_ALL_DIGESTS)
569 && !RUN_ONCE(&add_all_digests, ossl_init_add_all_digests))
570 return 0;
571
572 if ((opts & OPENSSL_INIT_ATFORK)
573 && !openssl_init_fork_handlers())
574 return 0;
575
576 if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG)
577 && !RUN_ONCE_ALT(&config, ossl_init_no_config, ossl_init_config))
578 return 0;
579
580 if (opts & OPENSSL_INIT_LOAD_CONFIG) {
581 int loading = CRYPTO_THREAD_get_local(&in_init_config_local) != NULL;
582
583 /* If called recursively from OBJ_ calls, just skip it. */
584 if (!loading) {
585 int ret;
586
587 if (!CRYPTO_THREAD_set_local(&in_init_config_local, (void *)-1))
588 return 0;
589 if (settings == NULL) {
590 ret = RUN_ONCE(&config, ossl_init_config);
591 } else {
592 if (!CRYPTO_THREAD_write_lock(init_lock))
593 return 0;
594 conf_settings = settings;
595 ret = RUN_ONCE_ALT(&config, ossl_init_config_settings,
596 ossl_init_config);
597 conf_settings = NULL;
598 CRYPTO_THREAD_unlock(init_lock);
599 }
600
601 if (ret <= 0)
602 return 0;
603 }
604 }
605
606 if ((opts & OPENSSL_INIT_ASYNC)
607 && !RUN_ONCE(&async, ossl_init_async))
608 return 0;
609
610#ifndef OPENSSL_NO_ENGINE
611 if ((opts & OPENSSL_INIT_ENGINE_OPENSSL)
612 && !RUN_ONCE(&engine_openssl, ossl_init_engine_openssl))
613 return 0;
614# ifndef OPENSSL_NO_RDRAND
615 if ((opts & OPENSSL_INIT_ENGINE_RDRAND)
616 && !RUN_ONCE(&engine_rdrand, ossl_init_engine_rdrand))
617 return 0;
618# endif
619 if ((opts & OPENSSL_INIT_ENGINE_DYNAMIC)
620 && !RUN_ONCE(&engine_dynamic, ossl_init_engine_dynamic))
621 return 0;
622# ifndef OPENSSL_NO_STATIC_ENGINE
623# ifndef OPENSSL_NO_DEVCRYPTOENG
624 if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV)
625 && !RUN_ONCE(&engine_devcrypto, ossl_init_engine_devcrypto))
626 return 0;
627# endif
628# if !defined(OPENSSL_NO_PADLOCKENG)
629 if ((opts & OPENSSL_INIT_ENGINE_PADLOCK)
630 && !RUN_ONCE(&engine_padlock, ossl_init_engine_padlock))
631 return 0;
632# endif
633# if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG)
634 if ((opts & OPENSSL_INIT_ENGINE_CAPI)
635 && !RUN_ONCE(&engine_capi, ossl_init_engine_capi))
636 return 0;
637# endif
638# if !defined(OPENSSL_NO_AFALGENG)
639 if ((opts & OPENSSL_INIT_ENGINE_AFALG)
640 && !RUN_ONCE(&engine_afalg, ossl_init_engine_afalg))
641 return 0;
642# endif
643# endif
644 if (opts & (OPENSSL_INIT_ENGINE_ALL_BUILTIN
645 | OPENSSL_INIT_ENGINE_OPENSSL
646 | OPENSSL_INIT_ENGINE_AFALG)) {
647 ENGINE_register_all_complete();
648 }
649#endif
650
651 if (!CRYPTO_atomic_or(&optsdone, opts, &tmp, optsdone_lock))
652 return 0;
653
654 return 1;
655}
656
657int OPENSSL_atexit(void (*handler)(void))
658{
659 OPENSSL_INIT_STOP *newhand;
660
661#if !defined(OPENSSL_USE_NODELETE)\
662 && !defined(OPENSSL_NO_PINSHARED)
663 {
664# if defined(DSO_WIN32) && !defined(_WIN32_WCE)
665 HMODULE handle = NULL;
666 BOOL ret;
667 union {
668 void *sym;
669 void (*func)(void);
670 } handlersym;
671
672 handlersym.func = handler;
673
674 /*
675 * We don't use the DSO route for WIN32 because there is a better
676 * way
677 */
678 ret = GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
679 | GET_MODULE_HANDLE_EX_FLAG_PIN,
680 handlersym.sym, &handle);
681
682 if (!ret)
683 return 0;
684# elif !defined(DSO_NONE)
685 /*
686 * Deliberately leak a reference to the handler. This will force the
687 * library/code containing the handler to remain loaded until we run the
688 * atexit handler. If -znodelete has been used then this is
689 * unnecessary.
690 */
691 DSO *dso = NULL;
692 union {
693 void *sym;
694 void (*func)(void);
695 } handlersym;
696
697 handlersym.func = handler;
698
699 ERR_set_mark();
700 dso = DSO_dsobyaddr(handlersym.sym, DSO_FLAG_NO_UNLOAD_ON_FREE);
701 /* See same code above in ossl_init_base() for an explanation. */
702 OSSL_TRACE1(INIT,
703 "atexit: obtained DSO reference? %s\n",
704 (dso == NULL ? "No!" : "Yes."));
705 DSO_free(dso);
706 ERR_pop_to_mark();
707# endif
708 }
709#endif
710
711 if ((newhand = OPENSSL_malloc(sizeof(*newhand))) == NULL) {
712 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
713 return 0;
714 }
715
716 newhand->handler = handler;
717 newhand->next = stop_handlers;
718 stop_handlers = newhand;
719
720 return 1;
721}
722
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