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1 | /* | |
2 | * Written by Matt Caswell for the OpenSSL project. | |
3 | */ | |
4 | /* ==================================================================== | |
5 | * Copyright (c) 2016 The OpenSSL Project. All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * | |
14 | * 2. Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in | |
16 | * the documentation and/or other materials provided with the | |
17 | * distribution. | |
18 | * | |
19 | * 3. All advertising materials mentioning features or use of this | |
20 | * software must display the following acknowledgment: | |
21 | * "This product includes software developed by the OpenSSL Project | |
22 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
23 | * | |
24 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
25 | * endorse or promote products derived from this software without | |
26 | * prior written permission. For written permission, please contact | |
27 | * openssl-core@openssl.org. | |
28 | * | |
29 | * 5. Products derived from this software may not be called "OpenSSL" | |
30 | * nor may "OpenSSL" appear in their names without prior written | |
31 | * permission of the OpenSSL Project. | |
32 | * | |
33 | * 6. Redistributions of any form whatsoever must retain the following | |
34 | * acknowledgment: | |
35 | * "This product includes software developed by the OpenSSL Project | |
36 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
37 | * | |
38 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
39 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
40 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
41 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
42 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
43 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
44 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
45 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
46 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
47 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
48 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
49 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
50 | * ==================================================================== | |
51 | * | |
52 | * This product includes cryptographic software written by Eric Young | |
53 | * (eay@cryptsoft.com). This product includes software written by Tim | |
54 | * Hudson (tjh@cryptsoft.com). | |
55 | * | |
56 | */ | |
57 | ||
58 | #include <internal/cryptlib_int.h> | |
59 | #include <openssl/err.h> | |
60 | #include <openssl/rand.h> | |
61 | #include <openssl/evp.h> | |
62 | #include <internal/evp_int.h> | |
63 | #include <internal/conf.h> | |
64 | #include <internal/async.h> | |
65 | #include <internal/engine.h> | |
66 | #include <openssl/comp.h> | |
67 | #include <internal/err.h> | |
68 | #include <stdlib.h> | |
69 | #include <assert.h> | |
70 | ||
71 | static int stopped = 0; | |
72 | ||
73 | static void ossl_init_thread_stop(struct thread_local_inits_st *locals); | |
74 | ||
75 | /* Implement "once" functionality */ | |
76 | #if !defined(OPENSSL_THREADS) | |
77 | typedef int OPENSSL_INIT_ONCE; | |
78 | # define OPENSSL_INIT_ONCE_STATIC_INIT 0 | |
79 | ||
80 | static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void)) | |
81 | { | |
82 | if (*once == OPENSSL_INIT_ONCE_STATIC_INIT) { | |
83 | *once = 1; | |
84 | init(); | |
85 | } | |
86 | } | |
87 | ||
88 | static int ossl_init_setup_thread_stop(void) | |
89 | { | |
90 | /* | |
91 | * There are no threads to stop. Do nothing. | |
92 | */ | |
93 | return 1; | |
94 | } | |
95 | ||
96 | static void ossl_init_thread_stop_cleanup(void) | |
97 | { | |
98 | } | |
99 | ||
100 | static struct thread_local_inits_st *local = NULL; | |
101 | static struct thread_local_inits_st *ossl_init_get_thread_local(int alloc) | |
102 | { | |
103 | struct thread_local_inits_st *tmp; | |
104 | ||
105 | tmp = local; | |
106 | ||
107 | if (local == NULL && alloc) | |
108 | tmp = local = OPENSSL_zalloc(sizeof(*local)); | |
109 | ||
110 | if (!alloc) | |
111 | local = NULL; | |
112 | ||
113 | return tmp; | |
114 | } | |
115 | ||
116 | #elif defined(OPENSSL_SYS_WINDOWS) | |
117 | ||
118 | # include <windows.h> | |
119 | ||
120 | # if _WIN32_WINNT < 0x0600 | |
121 | ||
122 | /* | |
123 | * Versions before 0x0600 (Windows Vista, Windows Server 2008 or later) do not | |
124 | * have InitOnceExecuteOnce, so we fall back to using a spinlock instead. | |
125 | */ | |
126 | typedef LONG OPENSSL_INIT_ONCE; | |
127 | # define OPENSSL_INIT_ONCE_STATIC_INIT 0 | |
128 | ||
129 | # define ONCE_UNINITED 0 | |
130 | # define ONCE_ININIT 1 | |
131 | # define ONCE_DONE 2 | |
132 | ||
133 | static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void)) | |
134 | { | |
135 | LONG volatile *lock = (LONG *)once; | |
136 | LONG result; | |
137 | ||
138 | if (*lock == ONCE_DONE) | |
139 | return; | |
140 | ||
141 | do { | |
142 | result = InterlockedCompareExchange(lock, ONCE_ININIT, ONCE_UNINITED); | |
143 | if (result == ONCE_UNINITED) { | |
144 | init(); | |
145 | *lock = ONCE_DONE; | |
146 | return; | |
147 | } | |
148 | } while (result == ONCE_ININIT); | |
149 | } | |
150 | ||
151 | # else | |
152 | ||
153 | typedef INIT_ONCE OPENSSL_INIT_ONCE; | |
154 | # define OPENSSL_INIT_ONCE_STATIC_INIT INIT_ONCE_STATIC_INIT | |
155 | ||
156 | static BOOL CALLBACK once_cb(PINIT_ONCE once, PVOID initfp, PVOID *unused) | |
157 | { | |
158 | void (*init)(void) = initfp; | |
159 | ||
160 | init(); | |
161 | ||
162 | return TRUE; | |
163 | } | |
164 | ||
165 | static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void)) | |
166 | { | |
167 | InitOnceExecuteOnce((INIT_ONCE *)once, once_cb, init, NULL); | |
168 | } | |
169 | # endif | |
170 | ||
171 | static DWORD threadstopkey = TLS_OUT_OF_INDEXES; | |
172 | ||
173 | static int ossl_init_setup_thread_stop(void) | |
174 | { | |
175 | /* | |
176 | * We use a dummy thread local key here. We use the destructor to detect | |
177 | * when the thread is going to stop | |
178 | */ | |
179 | threadstopkey = TlsAlloc(); | |
180 | if (threadstopkey == TLS_OUT_OF_INDEXES) | |
181 | return 0; | |
182 | ||
183 | return 1; | |
184 | } | |
185 | ||
186 | static void ossl_init_thread_stop_cleanup(void) | |
187 | { | |
188 | if (threadstopkey != TLS_OUT_OF_INDEXES) { | |
189 | TlsFree(threadstopkey); | |
190 | } | |
191 | } | |
192 | ||
193 | static struct thread_local_inits_st *ossl_init_get_thread_local(int alloc) | |
194 | { | |
195 | struct thread_local_inits_st *local = TlsGetValue(threadstopkey); | |
196 | ||
197 | if (local == NULL && alloc) { | |
198 | local = OPENSSL_zalloc(sizeof *local); | |
199 | TlsSetValue(threadstopkey, local); | |
200 | } | |
201 | if (!alloc) { | |
202 | TlsSetValue(threadstopkey, NULL); | |
203 | } | |
204 | ||
205 | return local; | |
206 | } | |
207 | ||
208 | #else /* pthreads */ | |
209 | # include <pthread.h> | |
210 | ||
211 | static pthread_key_t threadstopkey; | |
212 | ||
213 | typedef pthread_once_t OPENSSL_INIT_ONCE; | |
214 | # define OPENSSL_INIT_ONCE_STATIC_INIT PTHREAD_ONCE_INIT | |
215 | ||
216 | static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void)) | |
217 | { | |
218 | pthread_once(once, init); | |
219 | } | |
220 | ||
221 | static void ossl_init_thread_stop_wrap(void *local) | |
222 | { | |
223 | ossl_init_thread_stop((struct thread_local_inits_st *)local); | |
224 | } | |
225 | ||
226 | static int ossl_init_setup_thread_stop(void) | |
227 | { | |
228 | /* | |
229 | * We use a dummy thread local key here. We use the destructor to detect | |
230 | * when the thread is going to stop | |
231 | */ | |
232 | return (pthread_key_create(&threadstopkey, | |
233 | ossl_init_thread_stop_wrap) == 0); | |
234 | } | |
235 | ||
236 | static void ossl_init_thread_stop_cleanup(void) | |
237 | { | |
238 | } | |
239 | ||
240 | static struct thread_local_inits_st *ossl_init_get_thread_local(int alloc) | |
241 | { | |
242 | struct thread_local_inits_st *local = pthread_getspecific(threadstopkey); | |
243 | ||
244 | if (local == NULL && alloc) { | |
245 | local = OPENSSL_zalloc(sizeof *local); | |
246 | pthread_setspecific(threadstopkey, local); | |
247 | } | |
248 | if (!alloc) { | |
249 | pthread_setspecific(threadstopkey, NULL); | |
250 | } | |
251 | ||
252 | return local; | |
253 | } | |
254 | ||
255 | #endif | |
256 | ||
257 | typedef struct ossl_init_stop_st OPENSSL_INIT_STOP; | |
258 | struct ossl_init_stop_st { | |
259 | void (*handler)(void); | |
260 | OPENSSL_INIT_STOP *next; | |
261 | }; | |
262 | ||
263 | static OPENSSL_INIT_STOP *stop_handlers = NULL; | |
264 | ||
265 | static OPENSSL_INIT_ONCE base = OPENSSL_INIT_ONCE_STATIC_INIT; | |
266 | static int base_inited = 0; | |
267 | static void ossl_init_base(void) | |
268 | { | |
269 | #ifdef OPENSSL_INIT_DEBUG | |
270 | fprintf(stderr, "OPENSSL_INIT: ossl_init_base: Setting up stop handlers\n"); | |
271 | #endif | |
272 | ossl_init_setup_thread_stop(); | |
273 | atexit(OPENSSL_cleanup); | |
274 | OPENSSL_cpuid_setup(); | |
275 | base_inited = 1; | |
276 | } | |
277 | ||
278 | static OPENSSL_INIT_ONCE load_crypto_strings = OPENSSL_INIT_ONCE_STATIC_INIT; | |
279 | static int load_crypto_strings_inited = 0; | |
280 | static void ossl_init_no_load_crypto_strings(void) | |
281 | { | |
282 | /* Do nothing in this case */ | |
283 | return; | |
284 | } | |
285 | ||
286 | static void ossl_init_load_crypto_strings(void) | |
287 | { | |
288 | /* | |
289 | * OPENSSL_NO_AUTOERRINIT is provided here to prevent at compile time | |
290 | * pulling in all the error strings during static linking | |
291 | */ | |
292 | #if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT) | |
293 | # ifdef OPENSSL_INIT_DEBUG | |
294 | fprintf(stderr, "OPENSSL_INIT: ossl_init_load_crypto_strings: " | |
295 | "err_load_crypto_strings_intern()\n"); | |
296 | # endif | |
297 | err_load_crypto_strings_intern(); | |
298 | #endif | |
299 | load_crypto_strings_inited = 1; | |
300 | } | |
301 | ||
302 | static OPENSSL_INIT_ONCE add_all_ciphers = OPENSSL_INIT_ONCE_STATIC_INIT; | |
303 | static void ossl_init_add_all_ciphers(void) | |
304 | { | |
305 | /* | |
306 | * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time | |
307 | * pulling in all the ciphers during static linking | |
308 | */ | |
309 | #ifndef OPENSSL_NO_AUTOALGINIT | |
310 | # ifdef OPENSSL_INIT_DEBUG | |
311 | fprintf(stderr, "OPENSSL_INIT: ossl_init_add_all_ciphers: " | |
312 | "openssl_add_all_ciphers_internal()\n"); | |
313 | # endif | |
314 | openssl_add_all_ciphers_internal(); | |
315 | # ifndef OPENSSL_NO_ENGINE | |
316 | # if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV) | |
317 | ENGINE_setup_bsd_cryptodev(); | |
318 | # endif | |
319 | # endif | |
320 | #endif | |
321 | } | |
322 | ||
323 | static OPENSSL_INIT_ONCE add_all_digests = OPENSSL_INIT_ONCE_STATIC_INIT; | |
324 | static void ossl_init_add_all_digests(void) | |
325 | { | |
326 | /* | |
327 | * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time | |
328 | * pulling in all the ciphers during static linking | |
329 | */ | |
330 | #ifndef OPENSSL_NO_AUTOALGINIT | |
331 | # ifdef OPENSSL_INIT_DEBUG | |
332 | fprintf(stderr, "OPENSSL_INIT: ossl_init_add_all_digests: " | |
333 | "openssl_add_all_digests_internal()\n"); | |
334 | # endif | |
335 | openssl_add_all_digests_internal(); | |
336 | # ifndef OPENSSL_NO_ENGINE | |
337 | # if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV) | |
338 | ENGINE_setup_bsd_cryptodev(); | |
339 | # endif | |
340 | # endif | |
341 | #endif | |
342 | } | |
343 | ||
344 | static void ossl_init_no_add_algs(void) | |
345 | { | |
346 | /* Do nothing */ | |
347 | return; | |
348 | } | |
349 | ||
350 | static OPENSSL_INIT_ONCE config = OPENSSL_INIT_ONCE_STATIC_INIT; | |
351 | static int config_inited = 0; | |
352 | static const char *config_filename; | |
353 | static void ossl_init_config(void) | |
354 | { | |
355 | #ifdef OPENSSL_INIT_DEBUG | |
356 | fprintf(stderr, | |
357 | "OPENSSL_INIT: ossl_init_config: openssl_config_internal(%s)\n", | |
358 | config_filename==NULL?"NULL":config_filename); | |
359 | #endif | |
360 | openssl_config_internal(config_filename); | |
361 | config_inited = 1; | |
362 | } | |
363 | static void ossl_init_no_config(void) | |
364 | { | |
365 | #ifdef OPENSSL_INIT_DEBUG | |
366 | fprintf(stderr, | |
367 | "OPENSSL_INIT: ossl_init_config: openssl_no_config_internal()\n"); | |
368 | #endif | |
369 | openssl_no_config_internal(); | |
370 | config_inited = 1; | |
371 | } | |
372 | ||
373 | static OPENSSL_INIT_ONCE async = OPENSSL_INIT_ONCE_STATIC_INIT; | |
374 | static int async_inited = 0; | |
375 | static void ossl_init_async(void) | |
376 | { | |
377 | #ifdef OPENSSL_INIT_DEBUG | |
378 | fprintf(stderr, "OPENSSL_INIT: ossl_init_async: async_init()\n"); | |
379 | #endif | |
380 | async_init(); | |
381 | async_inited = 1; | |
382 | } | |
383 | ||
384 | #ifndef OPENSSL_NO_ENGINE | |
385 | static int engine_inited = 0; | |
386 | static OPENSSL_INIT_ONCE engine_openssl = OPENSSL_INIT_ONCE_STATIC_INIT; | |
387 | static void ossl_init_engine_openssl(void) | |
388 | { | |
389 | # ifdef OPENSSL_INIT_DEBUG | |
390 | fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_openssl: " | |
391 | "engine_load_openssl_internal()\n"); | |
392 | # endif | |
393 | engine_load_openssl_internal(); | |
394 | engine_inited = 1; | |
395 | } | |
396 | # if !defined(OPENSSL_NO_HW) && \ | |
397 | (defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV)) | |
398 | static OPENSSL_INIT_ONCE engine_cryptodev = OPENSSL_INIT_ONCE_STATIC_INIT; | |
399 | static void ossl_init_engine_cryptodev(void) | |
400 | { | |
401 | # ifdef OPENSSL_INIT_DEBUG | |
402 | fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_cryptodev: " | |
403 | "engine_load_cryptodev_internal()\n"); | |
404 | # endif | |
405 | engine_load_cryptodev_internal(); | |
406 | engine_inited = 1; | |
407 | } | |
408 | # endif | |
409 | ||
410 | # ifndef OPENSSL_NO_RDRAND | |
411 | static OPENSSL_INIT_ONCE engine_rdrand = OPENSSL_INIT_ONCE_STATIC_INIT; | |
412 | static void ossl_init_engine_rdrand(void) | |
413 | { | |
414 | # ifdef OPENSSL_INIT_DEBUG | |
415 | fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_rdrand: " | |
416 | "engine_load_rdrand_internal()\n"); | |
417 | # endif | |
418 | engine_load_rdrand_internal(); | |
419 | engine_inited = 1; | |
420 | } | |
421 | # endif | |
422 | static OPENSSL_INIT_ONCE engine_dynamic = OPENSSL_INIT_ONCE_STATIC_INIT; | |
423 | static void ossl_init_engine_dynamic(void) | |
424 | { | |
425 | # ifdef OPENSSL_INIT_DEBUG | |
426 | fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_dynamic: " | |
427 | "engine_load_dynamic_internal()\n"); | |
428 | # endif | |
429 | engine_load_dynamic_internal(); | |
430 | engine_inited = 1; | |
431 | } | |
432 | # ifndef OPENSSL_NO_STATIC_ENGINE | |
433 | # if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK) | |
434 | static OPENSSL_INIT_ONCE engine_padlock = OPENSSL_INIT_ONCE_STATIC_INIT; | |
435 | static void ossl_init_engine_padlock(void) | |
436 | { | |
437 | # ifdef OPENSSL_INIT_DEBUG | |
438 | fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_padlock: " | |
439 | "engine_load_padlock_internal()\n"); | |
440 | # endif | |
441 | engine_load_padlock_internal(); | |
442 | engine_inited = 1; | |
443 | } | |
444 | # endif | |
445 | # if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG) | |
446 | static OPENSSL_INIT_ONCE engine_capi = OPENSSL_INIT_ONCE_STATIC_INIT; | |
447 | static void ossl_init_engine_capi(void) | |
448 | { | |
449 | # ifdef OPENSSL_INIT_DEBUG | |
450 | fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_capi: " | |
451 | "engine_load_capi_internal()\n"); | |
452 | # endif | |
453 | engine_load_capi_internal(); | |
454 | engine_inited = 1; | |
455 | } | |
456 | # endif | |
457 | static OPENSSL_INIT_ONCE engine_dasync = OPENSSL_INIT_ONCE_STATIC_INIT; | |
458 | static void ossl_init_engine_dasync(void) | |
459 | { | |
460 | # ifdef OPENSSL_INIT_DEBUG | |
461 | fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_dasync: " | |
462 | "engine_load_dasync_internal()\n"); | |
463 | # endif | |
464 | engine_load_dasync_internal(); | |
465 | engine_inited = 1; | |
466 | } | |
467 | # endif | |
468 | #endif | |
469 | ||
470 | static OPENSSL_INIT_ONCE zlib = OPENSSL_INIT_ONCE_STATIC_INIT; | |
471 | static int zlib_inited = 0; | |
472 | static void ossl_init_zlib(void) | |
473 | { | |
474 | /* Do nothing - we need to know about this for the later cleanup */ | |
475 | zlib_inited = 1; | |
476 | } | |
477 | ||
478 | static void ossl_init_thread_stop(struct thread_local_inits_st *locals) | |
479 | { | |
480 | /* Can't do much about this */ | |
481 | if (locals == NULL) | |
482 | return; | |
483 | ||
484 | if (locals->async) { | |
485 | #ifdef OPENSSL_INIT_DEBUG | |
486 | fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: " | |
487 | "ASYNC_cleanup_thread()\n"); | |
488 | #endif | |
489 | ASYNC_cleanup_thread(); | |
490 | } | |
491 | ||
492 | if (locals->err_state) { | |
493 | #ifdef OPENSSL_INIT_DEBUG | |
494 | fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: " | |
495 | "ERR_remove_thread_state(NULL)\n"); | |
496 | #endif | |
497 | ERR_remove_thread_state(NULL); | |
498 | } | |
499 | ||
500 | OPENSSL_free(locals); | |
501 | ossl_init_thread_stop_cleanup(); | |
502 | } | |
503 | ||
504 | void OPENSSL_thread_stop(void) | |
505 | { | |
506 | ossl_init_thread_stop( | |
507 | (struct thread_local_inits_st *)ossl_init_get_thread_local(0)); | |
508 | } | |
509 | ||
510 | int ossl_init_thread_start(uint64_t opts) | |
511 | { | |
512 | struct thread_local_inits_st *locals = ossl_init_get_thread_local(1); | |
513 | ||
514 | if (locals == NULL) | |
515 | return 0; | |
516 | ||
517 | if (opts & OPENSSL_INIT_THREAD_ASYNC) { | |
518 | #ifdef OPENSSL_INIT_DEBUG | |
519 | fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_start: " | |
520 | "marking thread for async\n"); | |
521 | #endif | |
522 | locals->async = 1; | |
523 | } | |
524 | ||
525 | if (opts & OPENSSL_INIT_THREAD_ERR_STATE) { | |
526 | #ifdef OPENSSL_INIT_DEBUG | |
527 | fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_start: " | |
528 | "marking thread for err_state\n"); | |
529 | #endif | |
530 | locals->err_state = 1; | |
531 | } | |
532 | ||
533 | return 1; | |
534 | } | |
535 | ||
536 | void OPENSSL_cleanup(void) | |
537 | { | |
538 | OPENSSL_INIT_STOP *currhandler, *lasthandler; | |
539 | ||
540 | /* If we've not been inited then no need to deinit */ | |
541 | if (!base_inited) | |
542 | return; | |
543 | ||
544 | /* Might be explicitly called and also by atexit */ | |
545 | if (stopped) | |
546 | return; | |
547 | stopped = 1; | |
548 | ||
549 | /* | |
550 | * Thread stop may not get automatically called by the thread library for | |
551 | * the very last thread in some situations, so call it directly. | |
552 | */ | |
553 | ossl_init_thread_stop(ossl_init_get_thread_local(0)); | |
554 | ||
555 | currhandler = stop_handlers; | |
556 | while (currhandler != NULL) { | |
557 | currhandler->handler(); | |
558 | lasthandler = currhandler; | |
559 | currhandler = currhandler->next; | |
560 | OPENSSL_free(lasthandler); | |
561 | } | |
562 | stop_handlers = NULL; | |
563 | /* | |
564 | * We assume we are single-threaded for this function, i.e. no race | |
565 | * conditions for the various "*_inited" vars below. | |
566 | */ | |
567 | ||
568 | if (zlib_inited) { | |
569 | #ifdef OPENSSL_INIT_DEBUG | |
570 | fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " | |
571 | "COMP_zlib_cleanup()\n"); | |
572 | #endif | |
573 | COMP_zlib_cleanup(); | |
574 | } | |
575 | ||
576 | #ifndef OPENSSL_NO_ENGINE | |
577 | if (engine_inited) { | |
578 | # ifdef OPENSSL_INIT_DEBUG | |
579 | fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " | |
580 | "ENGINE_cleanup()\n"); | |
581 | # endif | |
582 | ENGINE_cleanup(); | |
583 | } | |
584 | #endif | |
585 | ||
586 | if (load_crypto_strings_inited) { | |
587 | #ifdef OPENSSL_INIT_DEBUG | |
588 | fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " | |
589 | "ERR_free_strings()\n"); | |
590 | #endif | |
591 | ERR_free_strings(); | |
592 | } | |
593 | ||
594 | #ifdef OPENSSL_INIT_DEBUG | |
595 | fprintf(stderr, "OPENSSL_INIT: OPENSSL_INIT_library_stop: " | |
596 | "CRYPTO_cleanup_all_ex_data()\n"); | |
597 | fprintf(stderr, "OPENSSL_INIT: OPENSSL_INIT_library_stop: " | |
598 | "EVP_cleanup()\n"); | |
599 | fprintf(stderr, "OPENSSL_INIT: OPENSSL_INIT_library_stop: " | |
600 | "CONF_modules_free()\n"); | |
601 | fprintf(stderr, "OPENSSL_INIT: OPENSSL_INIT_library_stop: " | |
602 | "RAND_cleanup()\n"); | |
603 | #endif | |
604 | CRYPTO_cleanup_all_ex_data(); | |
605 | EVP_cleanup(); | |
606 | CONF_modules_free(); | |
607 | RAND_cleanup(); | |
608 | base_inited = 0; | |
609 | } | |
610 | ||
611 | /* | |
612 | * If this function is called with a non NULL settings value then it must be | |
613 | * called prior to any threads making calls to any OpenSSL functions, | |
614 | * i.e. passing a non-null settings value is assumed to be single-threaded. | |
615 | */ | |
616 | int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) | |
617 | { | |
618 | static int stoperrset = 0; | |
619 | ||
620 | if (stopped) { | |
621 | if (!stoperrset) { | |
622 | /* | |
623 | * We only ever set this once to avoid getting into an infinite | |
624 | * loop where the error system keeps trying to init and fails so | |
625 | * sets an error etc | |
626 | */ | |
627 | stoperrset = 1; | |
628 | CRYPTOerr(CRYPTO_F_OPENSSL_INIT_CRYPTO, ERR_R_INIT_FAIL); | |
629 | } | |
630 | return 0; | |
631 | } | |
632 | ||
633 | ossl_init_once_run(&base, ossl_init_base); | |
634 | ||
635 | if (opts & OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS) | |
636 | ossl_init_once_run(&load_crypto_strings, | |
637 | ossl_init_no_load_crypto_strings); | |
638 | ||
639 | if (opts & OPENSSL_INIT_LOAD_CRYPTO_STRINGS) | |
640 | ossl_init_once_run(&load_crypto_strings, ossl_init_load_crypto_strings); | |
641 | ||
642 | if (opts & OPENSSL_INIT_NO_ADD_ALL_CIPHERS) | |
643 | ossl_init_once_run(&add_all_ciphers, ossl_init_no_add_algs); | |
644 | ||
645 | if (opts & OPENSSL_INIT_ADD_ALL_CIPHERS) | |
646 | ossl_init_once_run(&add_all_ciphers, ossl_init_add_all_ciphers); | |
647 | ||
648 | if (opts & OPENSSL_INIT_NO_ADD_ALL_DIGESTS) | |
649 | ossl_init_once_run(&add_all_digests, ossl_init_no_add_algs); | |
650 | ||
651 | if (opts & OPENSSL_INIT_ADD_ALL_DIGESTS) | |
652 | ossl_init_once_run(&add_all_digests, ossl_init_add_all_digests); | |
653 | ||
654 | if (opts & OPENSSL_INIT_NO_LOAD_CONFIG) { | |
655 | ossl_init_once_run(&config, ossl_init_no_config); | |
656 | } | |
657 | ||
658 | if (opts & OPENSSL_INIT_LOAD_CONFIG) { | |
659 | CRYPTO_w_lock(CRYPTO_LOCK_INIT); | |
660 | config_filename = (settings == NULL) ? NULL : settings->config_name; | |
661 | ossl_init_once_run(&config, ossl_init_config); | |
662 | CRYPTO_w_unlock(CRYPTO_LOCK_INIT); | |
663 | } | |
664 | ||
665 | if (opts & OPENSSL_INIT_ASYNC) { | |
666 | ossl_init_once_run(&async, ossl_init_async); | |
667 | } | |
668 | ||
669 | #ifndef OPENSSL_NO_ENGINE | |
670 | if (opts & OPENSSL_INIT_ENGINE_OPENSSL) { | |
671 | ossl_init_once_run(&engine_openssl, ossl_init_engine_openssl); | |
672 | } | |
673 | # if !defined(OPENSSL_NO_HW) && \ | |
674 | (defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV)) | |
675 | if (opts & OPENSSL_INIT_ENGINE_CRYPTODEV) { | |
676 | ossl_init_once_run(&engine_cryptodev, ossl_init_engine_cryptodev); | |
677 | } | |
678 | # endif | |
679 | # ifndef OPENSSL_NO_RDRAND | |
680 | if (opts & OPENSSL_INIT_ENGINE_RDRAND) { | |
681 | ossl_init_once_run(&engine_rdrand, ossl_init_engine_rdrand); | |
682 | } | |
683 | # endif | |
684 | if (opts & OPENSSL_INIT_ENGINE_DYNAMIC) { | |
685 | ossl_init_once_run(&engine_dynamic, ossl_init_engine_dynamic); | |
686 | } | |
687 | # ifndef OPENSSL_NO_STATIC_ENGINE | |
688 | # if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK) | |
689 | if (opts & OPENSSL_INIT_ENGINE_PADLOCK) { | |
690 | ossl_init_once_run(&engine_padlock, ossl_init_engine_padlock); | |
691 | } | |
692 | # endif | |
693 | # if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG) | |
694 | if (opts & OPENSSL_INIT_ENGINE_CAPI) { | |
695 | ossl_init_once_run(&engine_capi, ossl_init_engine_capi); | |
696 | } | |
697 | # endif | |
698 | if (opts & OPENSSL_INIT_ENGINE_DASYNC) { | |
699 | ossl_init_once_run(&engine_dasync, ossl_init_engine_dasync); | |
700 | } | |
701 | # endif | |
702 | if (opts & (OPENSSL_INIT_ENGINE_ALL_BUILTIN | |
703 | | OPENSSL_INIT_ENGINE_DASYNC | OPENSSL_INIT_ENGINE_OPENSSL)) { | |
704 | ENGINE_register_all_complete(); | |
705 | } | |
706 | #endif | |
707 | ||
708 | if (opts & OPENSSL_INIT_ZLIB) { | |
709 | ossl_init_once_run(&zlib, ossl_init_zlib); | |
710 | } | |
711 | ||
712 | return 1; | |
713 | } | |
714 | ||
715 | int OPENSSL_atexit(void (*handler)(void)) | |
716 | { | |
717 | OPENSSL_INIT_STOP *newhand; | |
718 | ||
719 | newhand = OPENSSL_malloc(sizeof(*newhand)); | |
720 | if (newhand == NULL) | |
721 | return 0; | |
722 | ||
723 | newhand->handler = handler; | |
724 | newhand->next = stop_handlers; | |
725 | stop_handlers = newhand; | |
726 | ||
727 | return 1; | |
728 | } | |
729 | ||
730 |