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Commit | Line | Data |
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aa6bb135 | 1 | /* |
33388b44 | 2 | * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved. |
435037d4 | 3 | * |
0e9725bc | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
aa6bb135 RS |
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 | |
435037d4 | 8 | */ |
58964a49 | 9 | |
25f2138b | 10 | #include "crypto/cryptlib.h" |
c2e4e5d2 | 11 | #include "internal/thread_once.h" |
58964a49 | 12 | |
852c2ed2 RS |
13 | DEFINE_STACK_OF(void) |
14 | ||
1aedc35f | 15 | int do_ex_data_init(OPENSSL_CTX *ctx) |
f7520011 | 16 | { |
1aedc35f MC |
17 | OSSL_EX_DATA_GLOBAL *global = openssl_ctx_get_ex_data_global(ctx); |
18 | ||
19 | if (global == NULL) | |
eb2b9892 | 20 | return 0; |
1aedc35f MC |
21 | |
22 | global->ex_data_lock = CRYPTO_THREAD_lock_new(); | |
23 | return global->ex_data_lock != NULL; | |
ff234405 MC |
24 | } |
25 | ||
0f113f3e | 26 | /* |
e6390aca | 27 | * Return the EX_CALLBACKS from the |ex_data| array that corresponds to |
7e5363ab | 28 | * a given class. On success, *holds the lock.* |
86cd42fb | 29 | * The |global| parameter is assumed to be non null (checked by the caller). |
0f113f3e | 30 | */ |
86cd42fb | 31 | static EX_CALLBACKS *get_and_lock(OSSL_EX_DATA_GLOBAL *global, int class_index) |
0f113f3e | 32 | { |
e6390aca | 33 | EX_CALLBACKS *ip; |
7e5363ab RS |
34 | |
35 | if (class_index < 0 || class_index >= CRYPTO_EX_INDEX__COUNT) { | |
de705824 | 36 | CRYPTOerr(CRYPTO_F_GET_AND_LOCK, ERR_R_PASSED_INVALID_ARGUMENT); |
7e5363ab RS |
37 | return NULL; |
38 | } | |
39 | ||
86cd42fb | 40 | if (global->ex_data_lock == NULL) { |
1ee7b8b9 | 41 | /* |
742ccab3 RS |
42 | * If we get here, someone (who?) cleaned up the lock, so just |
43 | * treat it as an error. | |
1ee7b8b9 MC |
44 | */ |
45 | return NULL; | |
46 | } | |
47 | ||
1aedc35f | 48 | CRYPTO_THREAD_write_lock(global->ex_data_lock); |
aee6e29f | 49 | ip = &global->ex_data[class_index]; |
7e5363ab | 50 | return ip; |
0f113f3e MC |
51 | } |
52 | ||
e6390aca | 53 | static void cleanup_cb(EX_CALLBACK *funcs) |
0f113f3e MC |
54 | { |
55 | OPENSSL_free(funcs); | |
56 | } | |
3a079997 | 57 | |
0f113f3e | 58 | /* |
7e5363ab RS |
59 | * Release all "ex_data" state to prevent memory leaks. This can't be made |
60 | * thread-safe without overhauling a lot of stuff, and shouldn't really be | |
61 | * called under potential race-conditions anyway (it's for program shutdown | |
62 | * after all). | |
0f113f3e | 63 | */ |
1aedc35f | 64 | void crypto_cleanup_all_ex_data_int(OPENSSL_CTX *ctx) |
0f113f3e | 65 | { |
7e5363ab | 66 | int i; |
1aedc35f MC |
67 | OSSL_EX_DATA_GLOBAL *global = openssl_ctx_get_ex_data_global(ctx); |
68 | ||
69 | if (global == NULL) | |
70 | return; | |
0f113f3e | 71 | |
7e5363ab | 72 | for (i = 0; i < CRYPTO_EX_INDEX__COUNT; ++i) { |
1aedc35f | 73 | EX_CALLBACKS *ip = &global->ex_data[i]; |
7e5363ab | 74 | |
e6390aca | 75 | sk_EX_CALLBACK_pop_free(ip->meth, cleanup_cb); |
7e5363ab | 76 | ip->meth = NULL; |
0f113f3e | 77 | } |
1ee7b8b9 | 78 | |
1aedc35f MC |
79 | CRYPTO_THREAD_lock_free(global->ex_data_lock); |
80 | global->ex_data_lock = NULL; | |
0f113f3e MC |
81 | } |
82 | ||
e6390aca RS |
83 | |
84 | /* | |
85 | * Unregister a new index by replacing the callbacks with no-ops. | |
86 | * Any in-use instances are leaked. | |
87 | */ | |
88 | static void dummy_new(void *parent, void *ptr, CRYPTO_EX_DATA *ad, int idx, | |
89 | long argl, void *argp) | |
90 | { | |
91 | } | |
92 | ||
93 | static void dummy_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad, int idx, | |
94 | long argl, void *argp) | |
95 | { | |
96 | } | |
97 | ||
3c853776 | 98 | static int dummy_dup(CRYPTO_EX_DATA *to, const CRYPTO_EX_DATA *from, |
712e8deb | 99 | void **from_d, int idx, |
e6390aca RS |
100 | long argl, void *argp) |
101 | { | |
b3c31a65 | 102 | return 1; |
e6390aca RS |
103 | } |
104 | ||
1aedc35f | 105 | int crypto_free_ex_index_ex(OPENSSL_CTX *ctx, int class_index, int idx) |
e6390aca | 106 | { |
0c080f73 | 107 | EX_CALLBACKS *ip; |
e6390aca RS |
108 | EX_CALLBACK *a; |
109 | int toret = 0; | |
1aedc35f MC |
110 | OSSL_EX_DATA_GLOBAL *global = openssl_ctx_get_ex_data_global(ctx); |
111 | ||
112 | if (global == NULL) | |
97ee8af4 | 113 | return 0; |
e6390aca | 114 | |
86cd42fb | 115 | ip = get_and_lock(global, class_index); |
e6390aca RS |
116 | if (ip == NULL) |
117 | return 0; | |
86cd42fb | 118 | |
e6390aca RS |
119 | if (idx < 0 || idx >= sk_EX_CALLBACK_num(ip->meth)) |
120 | goto err; | |
121 | a = sk_EX_CALLBACK_value(ip->meth, idx); | |
122 | if (a == NULL) | |
123 | goto err; | |
124 | a->new_func = dummy_new; | |
125 | a->dup_func = dummy_dup; | |
126 | a->free_func = dummy_free; | |
127 | toret = 1; | |
128 | err: | |
1aedc35f | 129 | CRYPTO_THREAD_unlock(global->ex_data_lock); |
e6390aca RS |
130 | return toret; |
131 | } | |
132 | ||
1aedc35f MC |
133 | int CRYPTO_free_ex_index(int class_index, int idx) |
134 | { | |
135 | return crypto_free_ex_index_ex(NULL, class_index, idx); | |
136 | } | |
137 | ||
0f113f3e | 138 | /* |
e6390aca | 139 | * Register a new index. |
0f113f3e | 140 | */ |
1aedc35f MC |
141 | int crypto_get_ex_new_index_ex(OPENSSL_CTX *ctx, int class_index, long argl, |
142 | void *argp, CRYPTO_EX_new *new_func, | |
143 | CRYPTO_EX_dup *dup_func, | |
144 | CRYPTO_EX_free *free_func) | |
0f113f3e MC |
145 | { |
146 | int toret = -1; | |
e6390aca | 147 | EX_CALLBACK *a; |
1aedc35f MC |
148 | EX_CALLBACKS *ip; |
149 | OSSL_EX_DATA_GLOBAL *global = openssl_ctx_get_ex_data_global(ctx); | |
7e5363ab | 150 | |
1aedc35f | 151 | if (global == NULL) |
1f760760 | 152 | return -1; |
1aedc35f | 153 | |
86cd42fb | 154 | ip = get_and_lock(global, class_index); |
e6390aca | 155 | if (ip == NULL) |
0f113f3e | 156 | return -1; |
8cab4e9b EK |
157 | |
158 | if (ip->meth == NULL) { | |
159 | ip->meth = sk_EX_CALLBACK_new_null(); | |
160 | /* We push an initial value on the stack because the SSL | |
161 | * "app_data" routines use ex_data index zero. See RT 3710. */ | |
162 | if (ip->meth == NULL | |
163 | || !sk_EX_CALLBACK_push(ip->meth, NULL)) { | |
1aedc35f | 164 | CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX_EX, ERR_R_MALLOC_FAILURE); |
8cab4e9b EK |
165 | goto err; |
166 | } | |
167 | } | |
168 | ||
e6390aca | 169 | a = (EX_CALLBACK *)OPENSSL_malloc(sizeof(*a)); |
90945fa3 | 170 | if (a == NULL) { |
1aedc35f | 171 | CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX_EX, ERR_R_MALLOC_FAILURE); |
7e5363ab | 172 | goto err; |
0f113f3e MC |
173 | } |
174 | a->argl = argl; | |
175 | a->argp = argp; | |
176 | a->new_func = new_func; | |
177 | a->dup_func = dup_func; | |
178 | a->free_func = free_func; | |
3a079997 | 179 | |
e6390aca | 180 | if (!sk_EX_CALLBACK_push(ip->meth, NULL)) { |
1aedc35f | 181 | CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX_EX, ERR_R_MALLOC_FAILURE); |
7e5363ab RS |
182 | OPENSSL_free(a); |
183 | goto err; | |
184 | } | |
e6390aca RS |
185 | toret = sk_EX_CALLBACK_num(ip->meth) - 1; |
186 | (void)sk_EX_CALLBACK_set(ip->meth, toret, a); | |
3a079997 | 187 | |
7e5363ab | 188 | err: |
1aedc35f | 189 | CRYPTO_THREAD_unlock(global->ex_data_lock); |
0f113f3e MC |
190 | return toret; |
191 | } | |
3a079997 | 192 | |
1aedc35f MC |
193 | int CRYPTO_get_ex_new_index(int class_index, long argl, void *argp, |
194 | CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, | |
195 | CRYPTO_EX_free *free_func) | |
196 | { | |
197 | return crypto_get_ex_new_index_ex(NULL, class_index, argl, argp, new_func, | |
198 | dup_func, free_func); | |
199 | } | |
200 | ||
0f113f3e | 201 | /* |
7e5363ab RS |
202 | * Initialise a new CRYPTO_EX_DATA for use in a particular class - including |
203 | * calling new() callbacks for each index in the class used by this variable | |
e6390aca | 204 | * Thread-safe by copying a class's array of "EX_CALLBACK" entries |
7e5363ab RS |
205 | * in the lock, then using them outside the lock. Note this only applies |
206 | * to the global "ex_data" state (ie. class definitions), not 'ad' itself. | |
0f113f3e | 207 | */ |
1aedc35f MC |
208 | int crypto_new_ex_data_ex(OPENSSL_CTX *ctx, int class_index, void *obj, |
209 | CRYPTO_EX_DATA *ad) | |
0f113f3e MC |
210 | { |
211 | int mx, i; | |
212 | void *ptr; | |
e6390aca RS |
213 | EX_CALLBACK **storage = NULL; |
214 | EX_CALLBACK *stack[10]; | |
1aedc35f MC |
215 | EX_CALLBACKS *ip; |
216 | OSSL_EX_DATA_GLOBAL *global = openssl_ctx_get_ex_data_global(ctx); | |
217 | ||
218 | if (global == NULL) | |
219 | return 0; | |
7e5363ab | 220 | |
86cd42fb | 221 | ip = get_and_lock(global, class_index); |
e6390aca | 222 | if (ip == NULL) |
0f113f3e | 223 | return 0; |
7e5363ab | 224 | |
1aedc35f | 225 | ad->ctx = ctx; |
0f113f3e | 226 | ad->sk = NULL; |
e6390aca | 227 | mx = sk_EX_CALLBACK_num(ip->meth); |
0f113f3e | 228 | if (mx > 0) { |
7e5363ab RS |
229 | if (mx < (int)OSSL_NELEM(stack)) |
230 | storage = stack; | |
231 | else | |
232 | storage = OPENSSL_malloc(sizeof(*storage) * mx); | |
90945fa3 | 233 | if (storage != NULL) |
7e5363ab | 234 | for (i = 0; i < mx; i++) |
e6390aca | 235 | storage[i] = sk_EX_CALLBACK_value(ip->meth, i); |
0f113f3e | 236 | } |
1aedc35f | 237 | CRYPTO_THREAD_unlock(global->ex_data_lock); |
7e5363ab RS |
238 | |
239 | if (mx > 0 && storage == NULL) { | |
1aedc35f | 240 | CRYPTOerr(CRYPTO_F_CRYPTO_NEW_EX_DATA_EX, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
241 | return 0; |
242 | } | |
243 | for (i = 0; i < mx; i++) { | |
23dc8feb | 244 | if (storage[i] != NULL && storage[i]->new_func != NULL) { |
0f113f3e MC |
245 | ptr = CRYPTO_get_ex_data(ad, i); |
246 | storage[i]->new_func(obj, ptr, ad, i, | |
247 | storage[i]->argl, storage[i]->argp); | |
248 | } | |
249 | } | |
7e5363ab RS |
250 | if (storage != stack) |
251 | OPENSSL_free(storage); | |
0f113f3e MC |
252 | return 1; |
253 | } | |
3a079997 | 254 | |
1aedc35f MC |
255 | int CRYPTO_new_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad) |
256 | { | |
257 | return crypto_new_ex_data_ex(NULL, class_index, obj, ad); | |
258 | } | |
259 | ||
7e5363ab RS |
260 | /* |
261 | * Duplicate a CRYPTO_EX_DATA variable - including calling dup() callbacks | |
262 | * for each index in the class used by this variable | |
263 | */ | |
264 | int CRYPTO_dup_ex_data(int class_index, CRYPTO_EX_DATA *to, | |
3c853776 | 265 | const CRYPTO_EX_DATA *from) |
0f113f3e MC |
266 | { |
267 | int mx, j, i; | |
b3c31a65 | 268 | void *ptr; |
e6390aca RS |
269 | EX_CALLBACK *stack[10]; |
270 | EX_CALLBACK **storage = NULL; | |
271 | EX_CALLBACKS *ip; | |
b3c31a65 | 272 | int toret = 0; |
86cd42fb | 273 | OSSL_EX_DATA_GLOBAL *global; |
7e5363ab | 274 | |
1aedc35f | 275 | to->ctx = from->ctx; |
7e5363ab RS |
276 | if (from->sk == NULL) |
277 | /* Nothing to copy over */ | |
0f113f3e | 278 | return 1; |
86cd42fb DG |
279 | |
280 | global = openssl_ctx_get_ex_data_global(from->ctx); | |
281 | if (global == NULL) | |
282 | return 0; | |
283 | ||
284 | ip = get_and_lock(global, class_index); | |
285 | if (ip == NULL) | |
0f113f3e | 286 | return 0; |
7e5363ab | 287 | |
e6390aca | 288 | mx = sk_EX_CALLBACK_num(ip->meth); |
0f113f3e MC |
289 | j = sk_void_num(from->sk); |
290 | if (j < mx) | |
291 | mx = j; | |
292 | if (mx > 0) { | |
7e5363ab RS |
293 | if (mx < (int)OSSL_NELEM(stack)) |
294 | storage = stack; | |
295 | else | |
296 | storage = OPENSSL_malloc(sizeof(*storage) * mx); | |
90945fa3 | 297 | if (storage != NULL) |
7e5363ab | 298 | for (i = 0; i < mx; i++) |
e6390aca | 299 | storage[i] = sk_EX_CALLBACK_value(ip->meth, i); |
0f113f3e | 300 | } |
1aedc35f | 301 | CRYPTO_THREAD_unlock(global->ex_data_lock); |
7e5363ab | 302 | |
b3c31a65 BE |
303 | if (mx == 0) |
304 | return 1; | |
305 | if (storage == NULL) { | |
7e5363ab | 306 | CRYPTOerr(CRYPTO_F_CRYPTO_DUP_EX_DATA, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
307 | return 0; |
308 | } | |
1ee21259 TS |
309 | /* |
310 | * Make sure the ex_data stack is at least |mx| elements long to avoid | |
311 | * issues in the for loop that follows; so go get the |mx|'th element | |
312 | * (if it does not exist CRYPTO_get_ex_data() returns NULL), and assign | |
313 | * to itself. This is normally a no-op; but ensures the stack is the | |
314 | * proper size | |
315 | */ | |
316 | if (!CRYPTO_set_ex_data(to, mx - 1, CRYPTO_get_ex_data(to, mx - 1))) | |
b3c31a65 | 317 | goto err; |
7e5363ab | 318 | |
0f113f3e MC |
319 | for (i = 0; i < mx; i++) { |
320 | ptr = CRYPTO_get_ex_data(from, i); | |
23dc8feb | 321 | if (storage[i] != NULL && storage[i]->dup_func != NULL) |
b3c31a65 BE |
322 | if (!storage[i]->dup_func(to, from, &ptr, i, |
323 | storage[i]->argl, storage[i]->argp)) | |
324 | goto err; | |
0f113f3e MC |
325 | CRYPTO_set_ex_data(to, i, ptr); |
326 | } | |
b3c31a65 BE |
327 | toret = 1; |
328 | err: | |
7e5363ab RS |
329 | if (storage != stack) |
330 | OPENSSL_free(storage); | |
b3c31a65 | 331 | return toret; |
0f113f3e | 332 | } |
3a079997 | 333 | |
7e5363ab RS |
334 | |
335 | /* | |
336 | * Cleanup a CRYPTO_EX_DATA variable - including calling free() callbacks for | |
337 | * each index in the class used by this variable | |
338 | */ | |
339 | void CRYPTO_free_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad) | |
0f113f3e MC |
340 | { |
341 | int mx, i; | |
e6390aca | 342 | EX_CALLBACKS *ip; |
0f113f3e | 343 | void *ptr; |
83b4049a | 344 | EX_CALLBACK *f; |
e6390aca RS |
345 | EX_CALLBACK *stack[10]; |
346 | EX_CALLBACK **storage = NULL; | |
86cd42fb | 347 | OSSL_EX_DATA_GLOBAL *global = openssl_ctx_get_ex_data_global(ad->ctx); |
7e5363ab | 348 | |
1aedc35f | 349 | if (global == NULL) |
83b4049a | 350 | goto err; |
7e5363ab | 351 | |
86cd42fb DG |
352 | ip = get_and_lock(global, class_index); |
353 | if (ip == NULL) | |
354 | goto err; | |
355 | ||
e6390aca | 356 | mx = sk_EX_CALLBACK_num(ip->meth); |
0f113f3e | 357 | if (mx > 0) { |
7e5363ab RS |
358 | if (mx < (int)OSSL_NELEM(stack)) |
359 | storage = stack; | |
360 | else | |
361 | storage = OPENSSL_malloc(sizeof(*storage) * mx); | |
90945fa3 | 362 | if (storage != NULL) |
7e5363ab | 363 | for (i = 0; i < mx; i++) |
e6390aca | 364 | storage[i] = sk_EX_CALLBACK_value(ip->meth, i); |
0f113f3e | 365 | } |
1aedc35f | 366 | CRYPTO_THREAD_unlock(global->ex_data_lock); |
7e5363ab | 367 | |
0f113f3e | 368 | for (i = 0; i < mx; i++) { |
83b4049a BE |
369 | if (storage != NULL) |
370 | f = storage[i]; | |
371 | else { | |
1aedc35f | 372 | CRYPTO_THREAD_write_lock(global->ex_data_lock); |
83b4049a | 373 | f = sk_EX_CALLBACK_value(ip->meth, i); |
1aedc35f | 374 | CRYPTO_THREAD_unlock(global->ex_data_lock); |
83b4049a BE |
375 | } |
376 | if (f != NULL && f->free_func != NULL) { | |
0f113f3e | 377 | ptr = CRYPTO_get_ex_data(ad, i); |
83b4049a | 378 | f->free_func(obj, ptr, ad, i, f->argl, f->argp); |
0f113f3e MC |
379 | } |
380 | } | |
7e5363ab RS |
381 | |
382 | if (storage != stack) | |
383 | OPENSSL_free(storage); | |
83b4049a | 384 | err: |
25aaa98a RS |
385 | sk_void_free(ad->sk); |
386 | ad->sk = NULL; | |
1aedc35f | 387 | ad->ctx = NULL; |
0f113f3e | 388 | } |
3a079997 | 389 | |
e17f5b6a RL |
390 | /* |
391 | * Allocate a given CRYPTO_EX_DATA item using the class specific allocation | |
392 | * function | |
393 | */ | |
394 | int CRYPTO_alloc_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad, | |
395 | int idx) | |
396 | { | |
397 | EX_CALLBACK *f; | |
398 | EX_CALLBACKS *ip; | |
399 | void *curval; | |
86cd42fb | 400 | OSSL_EX_DATA_GLOBAL *global; |
e17f5b6a RL |
401 | |
402 | curval = CRYPTO_get_ex_data(ad, idx); | |
e17f5b6a RL |
403 | /* Already there, no need to allocate */ |
404 | if (curval != NULL) | |
405 | return 1; | |
406 | ||
86cd42fb DG |
407 | global = openssl_ctx_get_ex_data_global(ad->ctx); |
408 | if (global == NULL) | |
409 | return 0; | |
410 | ||
411 | ip = get_and_lock(global, class_index); | |
23dc8feb F |
412 | if (ip == NULL) |
413 | return 0; | |
e17f5b6a | 414 | f = sk_EX_CALLBACK_value(ip->meth, idx); |
1aedc35f | 415 | CRYPTO_THREAD_unlock(global->ex_data_lock); |
e17f5b6a RL |
416 | |
417 | /* | |
418 | * This should end up calling CRYPTO_set_ex_data(), which allocates | |
419 | * everything necessary to support placing the new data in the right spot. | |
420 | */ | |
23dc8feb F |
421 | if (f->new_func == NULL) |
422 | return 0; | |
423 | ||
823ee00a | 424 | f->new_func(obj, NULL, ad, idx, f->argl, f->argp); |
e17f5b6a RL |
425 | |
426 | return 1; | |
427 | } | |
428 | ||
0f113f3e MC |
429 | /* |
430 | * For a given CRYPTO_EX_DATA variable, set the value corresponding to a | |
431 | * particular index in the class used by this variable | |
432 | */ | |
dd9d233e | 433 | int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int idx, void *val) |
0f113f3e MC |
434 | { |
435 | int i; | |
436 | ||
437 | if (ad->sk == NULL) { | |
438 | if ((ad->sk = sk_void_new_null()) == NULL) { | |
439 | CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA, ERR_R_MALLOC_FAILURE); | |
7e5363ab | 440 | return 0; |
0f113f3e MC |
441 | } |
442 | } | |
0f113f3e | 443 | |
7e5363ab | 444 | for (i = sk_void_num(ad->sk); i <= idx; ++i) { |
0f113f3e MC |
445 | if (!sk_void_push(ad->sk, NULL)) { |
446 | CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA, ERR_R_MALLOC_FAILURE); | |
7e5363ab | 447 | return 0; |
0f113f3e | 448 | } |
0f113f3e MC |
449 | } |
450 | sk_void_set(ad->sk, idx, val); | |
7e5363ab | 451 | return 1; |
0f113f3e MC |
452 | } |
453 | ||
454 | /* | |
455 | * For a given CRYPTO_EX_DATA_ variable, get the value corresponding to a | |
456 | * particular index in the class used by this variable | |
457 | */ | |
bbbc96a8 | 458 | void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx) |
0f113f3e | 459 | { |
7e5363ab RS |
460 | if (ad->sk == NULL || idx >= sk_void_num(ad->sk)) |
461 | return NULL; | |
462 | return sk_void_value(ad->sk, idx); | |
0f113f3e | 463 | } |
1aedc35f MC |
464 | |
465 | OPENSSL_CTX *crypto_ex_data_get_openssl_ctx(const CRYPTO_EX_DATA *ad) | |
466 | { | |
467 | return ad->ctx; | |
468 | } |