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5270e702 RL |
1 | /* crypto/engine/engine_list.c */ |
2 | /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL | |
3 | * project 2000. | |
4 | */ | |
5 | /* ==================================================================== | |
6 | * Copyright (c) 1999 The OpenSSL Project. All rights reserved. | |
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 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * | |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in | |
17 | * the documentation and/or other materials provided with the | |
18 | * distribution. | |
19 | * | |
20 | * 3. All advertising materials mentioning features or use of this | |
21 | * software must display the following acknowledgment: | |
22 | * "This product includes software developed by the OpenSSL Project | |
23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
24 | * | |
25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
26 | * endorse or promote products derived from this software without | |
27 | * prior written permission. For written permission, please contact | |
28 | * licensing@OpenSSL.org. | |
29 | * | |
30 | * 5. Products derived from this software may not be called "OpenSSL" | |
31 | * nor may "OpenSSL" appear in their names without prior written | |
32 | * permission of the OpenSSL Project. | |
33 | * | |
34 | * 6. Redistributions of any form whatsoever must retain the following | |
35 | * acknowledgment: | |
36 | * "This product includes software developed by the OpenSSL Project | |
37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
38 | * | |
39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
50 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
51 | * ==================================================================== | |
52 | * | |
53 | * This product includes cryptographic software written by Eric Young | |
54 | * (eay@cryptsoft.com). This product includes software written by Tim | |
55 | * Hudson (tjh@cryptsoft.com). | |
56 | * | |
57 | */ | |
58 | ||
59 | #include <openssl/crypto.h> | |
60 | #include "cryptlib.h" | |
61 | #include "engine_int.h" | |
62 | #include <openssl/engine.h> | |
63 | ||
64 | /* The linked-list of pointers to engine types. engine_list_head | |
65 | * incorporates an implicit structural reference but engine_list_tail | |
66 | * does not - the latter is a computational niceity and only points | |
67 | * to something that is already pointed to by its predecessor in the | |
68 | * list (or engine_list_head itself). In the same way, the use of the | |
69 | * "prev" pointer in each ENGINE is to save excessive list iteration, | |
70 | * it doesn't correspond to an extra structural reference. Hence, | |
71 | * engine_list_head, and each non-null "next" pointer account for | |
72 | * the list itself assuming exactly 1 structural reference on each | |
73 | * list member. */ | |
74 | static ENGINE *engine_list_head = NULL; | |
75 | static ENGINE *engine_list_tail = NULL; | |
76 | /* A boolean switch, used to ensure we only initialise once. This | |
77 | * is needed because the engine list may genuinely become empty during | |
78 | * use (so we can't use engine_list_head as an indicator for example. */ | |
79 | static int engine_list_flag = 0; | |
80 | ||
81 | /* These static functions starting with a lower case "engine_" always | |
82 | * take place when CRYPTO_LOCK_ENGINE has been locked up. */ | |
83 | static int engine_list_add(ENGINE *e) | |
84 | { | |
85 | int conflict = 0; | |
86 | ENGINE *iterator = NULL; | |
87 | ||
88 | if(e == NULL) | |
89 | { | |
90 | ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, | |
91 | ERR_R_PASSED_NULL_PARAMETER); | |
92 | return 0; | |
93 | } | |
94 | iterator = engine_list_head; | |
95 | while(iterator && !conflict) | |
96 | { | |
97 | conflict = (strcmp(iterator->id, e->id) == 0); | |
98 | iterator = iterator->next; | |
99 | } | |
100 | if(conflict) | |
101 | { | |
102 | ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, | |
103 | ENGINE_R_CONFLICTING_ENGINE_ID); | |
104 | return 0; | |
105 | } | |
106 | if(engine_list_head == NULL) | |
107 | { | |
108 | /* We are adding to an empty list. */ | |
109 | if(engine_list_tail) | |
110 | { | |
111 | ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, | |
112 | ENGINE_R_INTERNAL_LIST_ERROR); | |
113 | return 0; | |
114 | } | |
115 | engine_list_head = e; | |
116 | e->prev = NULL; | |
117 | } | |
118 | else | |
119 | { | |
120 | /* We are adding to the tail of an existing list. */ | |
121 | if((engine_list_tail == NULL) || | |
122 | (engine_list_tail->next != NULL)) | |
123 | { | |
124 | ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, | |
125 | ENGINE_R_INTERNAL_LIST_ERROR); | |
126 | return 0; | |
127 | } | |
128 | engine_list_tail->next = e; | |
129 | e->prev = engine_list_tail; | |
130 | } | |
131 | /* Having the engine in the list assumes a structural | |
132 | * reference. */ | |
133 | e->struct_ref++; | |
134 | /* However it came to be, e is the last item in the list. */ | |
135 | engine_list_tail = e; | |
136 | e->next = NULL; | |
137 | return 1; | |
138 | } | |
139 | ||
140 | static int engine_list_remove(ENGINE *e) | |
141 | { | |
142 | ENGINE *iterator; | |
143 | ||
144 | if(e == NULL) | |
145 | { | |
146 | ENGINEerr(ENGINE_F_ENGINE_LIST_REMOVE, | |
147 | ERR_R_PASSED_NULL_PARAMETER); | |
148 | return 0; | |
149 | } | |
150 | /* We need to check that e is in our linked list! */ | |
151 | iterator = engine_list_head; | |
152 | while(iterator && (iterator != e)) | |
153 | iterator = iterator->next; | |
154 | if(iterator == NULL) | |
155 | { | |
156 | ENGINEerr(ENGINE_F_ENGINE_LIST_REMOVE, | |
157 | ENGINE_R_ENGINE_IS_NOT_IN_LIST); | |
158 | return 0; | |
159 | } | |
160 | /* un-link e from the chain. */ | |
161 | if(e->next) | |
162 | e->next->prev = e->prev; | |
163 | if(e->prev) | |
164 | e->prev->next = e->next; | |
165 | /* Correct our head/tail if necessary. */ | |
166 | if(engine_list_head == e) | |
167 | engine_list_head = e->next; | |
168 | if(engine_list_tail == e) | |
169 | engine_list_tail = e->prev; | |
170 | /* remove our structural reference. */ | |
171 | e->struct_ref--; | |
172 | return 1; | |
173 | } | |
174 | ||
175 | /* This check always takes place with CRYPTO_LOCK_ENGINE locked up | |
176 | * so we're synchronised, but we can't call anything that tries to | |
177 | * lock it again! :-) NB: For convenience (and code-clarity) we | |
178 | * don't output errors for failures of the engine_list_add function | |
179 | * as it will generate errors itself. */ | |
180 | static int engine_internal_check(void) | |
181 | { | |
182 | if(engine_list_flag) | |
183 | return 1; | |
184 | /* This is our first time up, we need to populate the list | |
185 | * with our statically compiled-in engines. */ | |
186 | if(!engine_list_add(ENGINE_openssl())) | |
187 | return 0; | |
5270e702 RL |
188 | engine_list_flag = 1; |
189 | return 1; | |
190 | } | |
191 | ||
192 | /* Get the first/last "ENGINE" type available. */ | |
193 | ENGINE *ENGINE_get_first(void) | |
194 | { | |
195 | ENGINE *ret = NULL; | |
196 | ||
197 | CRYPTO_r_lock(CRYPTO_LOCK_ENGINE); | |
198 | if(engine_internal_check()) | |
199 | { | |
200 | ret = engine_list_head; | |
201 | if(ret) | |
202 | ret->struct_ref++; | |
203 | } | |
204 | CRYPTO_r_unlock(CRYPTO_LOCK_ENGINE); | |
205 | return ret; | |
206 | } | |
207 | ENGINE *ENGINE_get_last(void) | |
208 | { | |
209 | ENGINE *ret = NULL; | |
210 | ||
211 | CRYPTO_r_lock(CRYPTO_LOCK_ENGINE); | |
212 | if(engine_internal_check()) | |
213 | { | |
214 | ret = engine_list_tail; | |
215 | if(ret) | |
216 | ret->struct_ref++; | |
217 | } | |
218 | CRYPTO_r_unlock(CRYPTO_LOCK_ENGINE); | |
219 | return ret; | |
220 | } | |
221 | ||
222 | /* Iterate to the next/previous "ENGINE" type (NULL = end of the list). */ | |
223 | ENGINE *ENGINE_get_next(ENGINE *e) | |
224 | { | |
225 | ENGINE *ret = NULL; | |
226 | if(e == NULL) | |
227 | { | |
228 | ENGINEerr(ENGINE_F_ENGINE_GET_NEXT, | |
229 | ERR_R_PASSED_NULL_PARAMETER); | |
230 | return 0; | |
231 | } | |
232 | CRYPTO_r_lock(CRYPTO_LOCK_ENGINE); | |
233 | ret = e->next; | |
234 | e->struct_ref--; | |
235 | if(ret) | |
236 | ret->struct_ref++; | |
237 | CRYPTO_r_unlock(CRYPTO_LOCK_ENGINE); | |
238 | return ret; | |
239 | } | |
240 | ENGINE *ENGINE_get_prev(ENGINE *e) | |
241 | { | |
242 | ENGINE *ret = NULL; | |
243 | if(e == NULL) | |
244 | { | |
245 | ENGINEerr(ENGINE_F_ENGINE_GET_PREV, | |
246 | ERR_R_PASSED_NULL_PARAMETER); | |
247 | return 0; | |
248 | } | |
249 | CRYPTO_r_lock(CRYPTO_LOCK_ENGINE); | |
250 | ret = e->prev; | |
251 | e->struct_ref--; | |
252 | if(ret) | |
253 | ret->struct_ref++; | |
254 | CRYPTO_r_unlock(CRYPTO_LOCK_ENGINE); | |
255 | return ret; | |
256 | } | |
257 | ||
258 | /* Add another "ENGINE" type into the list. */ | |
259 | int ENGINE_add(ENGINE *e) | |
260 | { | |
261 | int to_return = 1; | |
262 | if(e == NULL) | |
263 | { | |
264 | ENGINEerr(ENGINE_F_ENGINE_ADD, | |
265 | ERR_R_PASSED_NULL_PARAMETER); | |
266 | return 0; | |
267 | } | |
268 | if((e->id == NULL) || (e->name == NULL)) | |
269 | { | |
270 | ENGINEerr(ENGINE_F_ENGINE_ADD, | |
271 | ENGINE_R_ID_OR_NAME_MISSING); | |
272 | } | |
273 | CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); | |
274 | if(!engine_internal_check() || !engine_list_add(e)) | |
275 | { | |
276 | ENGINEerr(ENGINE_F_ENGINE_ADD, | |
277 | ENGINE_R_INTERNAL_LIST_ERROR); | |
278 | to_return = 0; | |
279 | } | |
280 | CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); | |
281 | return to_return; | |
282 | } | |
283 | ||
284 | /* Remove an existing "ENGINE" type from the array. */ | |
285 | int ENGINE_remove(ENGINE *e) | |
286 | { | |
287 | int to_return = 1; | |
288 | if(e == NULL) | |
289 | { | |
290 | ENGINEerr(ENGINE_F_ENGINE_REMOVE, | |
291 | ERR_R_PASSED_NULL_PARAMETER); | |
292 | return 0; | |
293 | } | |
294 | CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); | |
295 | if(!engine_internal_check() || !engine_list_remove(e)) | |
296 | { | |
297 | ENGINEerr(ENGINE_F_ENGINE_REMOVE, | |
298 | ENGINE_R_INTERNAL_LIST_ERROR); | |
299 | to_return = 0; | |
300 | } | |
301 | CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); | |
302 | return to_return; | |
303 | } | |
304 | ||
305 | ENGINE *ENGINE_by_id(const char *id) | |
306 | { | |
307 | ENGINE *iterator = NULL; | |
308 | if(id == NULL) | |
309 | { | |
310 | ENGINEerr(ENGINE_F_ENGINE_BY_ID, | |
311 | ERR_R_PASSED_NULL_PARAMETER); | |
312 | return NULL; | |
313 | } | |
314 | CRYPTO_r_lock(CRYPTO_LOCK_ENGINE); | |
315 | if(!engine_internal_check()) | |
316 | ENGINEerr(ENGINE_F_ENGINE_BY_ID, | |
317 | ENGINE_R_INTERNAL_LIST_ERROR); | |
318 | else | |
319 | { | |
320 | iterator = engine_list_head; | |
321 | while(iterator && (strcmp(id, iterator->id) != 0)) | |
322 | iterator = iterator->next; | |
323 | if(iterator) | |
324 | /* We need to return a structural reference */ | |
325 | iterator->struct_ref++; | |
326 | } | |
327 | CRYPTO_r_unlock(CRYPTO_LOCK_ENGINE); | |
328 | if(iterator == NULL) | |
329 | ENGINEerr(ENGINE_F_ENGINE_BY_ID, | |
330 | ENGINE_R_NO_SUCH_ENGINE); | |
331 | return iterator; | |
332 | } | |
333 | ||
334 | /* As per the comments in engine.h, it is generally better all round | |
335 | * if the ENGINE structure is allocated within this framework. */ | |
336 | #if 0 | |
337 | int ENGINE_get_struct_size(void) | |
338 | { | |
339 | return sizeof(ENGINE); | |
340 | } | |
341 | ||
342 | ENGINE *ENGINE_new(ENGINE *e) | |
343 | { | |
344 | ENGINE *ret; | |
345 | ||
346 | if(e == NULL) | |
347 | { | |
348 | ret = (ENGINE *)(OPENSSL_malloc(sizeof(ENGINE)); | |
349 | if(ret == NULL) | |
350 | { | |
351 | ENGINEerr(ENGINE_F_ENGINE_NEW, | |
352 | ERR_R_MALLOC_FAILURE); | |
353 | return NULL; | |
354 | } | |
355 | } | |
356 | else | |
357 | ret = e; | |
358 | memset(ret, 0, sizeof(ENGINE)); | |
359 | if(e) | |
360 | ret->flags = ENGINE_FLAGS_MALLOCED; | |
361 | ret->struct_ref = 1; | |
362 | return ret; | |
363 | } | |
364 | #else | |
365 | ENGINE *ENGINE_new(void) | |
366 | { | |
367 | ENGINE *ret; | |
368 | ||
369 | ret = (ENGINE *)OPENSSL_malloc(sizeof(ENGINE)); | |
370 | if(ret == NULL) | |
371 | { | |
372 | ENGINEerr(ENGINE_F_ENGINE_NEW, ERR_R_MALLOC_FAILURE); | |
373 | return NULL; | |
374 | } | |
375 | memset(ret, 0, sizeof(ENGINE)); | |
376 | ret->flags = ENGINE_FLAGS_MALLOCED; | |
377 | ret->struct_ref = 1; | |
378 | return ret; | |
379 | } | |
380 | #endif | |
381 | ||
382 | int ENGINE_free(ENGINE *e) | |
383 | { | |
384 | int i; | |
385 | ||
386 | if(e == NULL) | |
387 | { | |
388 | ENGINEerr(ENGINE_F_ENGINE_FREE, | |
389 | ERR_R_PASSED_NULL_PARAMETER); | |
390 | return 0; | |
391 | } | |
392 | i = CRYPTO_add(&e->struct_ref,-1,CRYPTO_LOCK_ENGINE); | |
393 | #ifdef REF_PRINT | |
394 | REF_PRINT("ENGINE",e); | |
395 | #endif | |
396 | if (i > 0) return 1; | |
397 | #ifdef REF_CHECK | |
398 | if (i < 0) | |
399 | { | |
400 | fprintf(stderr,"ENGINE_free, bad reference count\n"); | |
401 | abort(); | |
402 | } | |
403 | #endif | |
404 | if(e->flags & ENGINE_FLAGS_MALLOCED) | |
405 | OPENSSL_free(e); | |
406 | return 1; | |
407 | } | |
408 | ||
409 | int ENGINE_set_id(ENGINE *e, const char *id) | |
410 | { | |
411 | if((e == NULL) || (id == NULL)) | |
412 | { | |
413 | ENGINEerr(ENGINE_F_ENGINE_SET_ID, | |
414 | ERR_R_PASSED_NULL_PARAMETER); | |
415 | return 0; | |
416 | } | |
417 | e->id = id; | |
418 | return 1; | |
419 | } | |
420 | ||
421 | int ENGINE_set_name(ENGINE *e, const char *name) | |
422 | { | |
423 | if((e == NULL) || (name == NULL)) | |
424 | { | |
425 | ENGINEerr(ENGINE_F_ENGINE_SET_NAME, | |
426 | ERR_R_PASSED_NULL_PARAMETER); | |
427 | return 0; | |
428 | } | |
429 | e->name = name; | |
430 | return 1; | |
431 | } | |
432 | ||
10e473e9 | 433 | int ENGINE_set_RSA(ENGINE *e, const RSA_METHOD *rsa_meth) |
5270e702 RL |
434 | { |
435 | if((e == NULL) || (rsa_meth == NULL)) | |
436 | { | |
437 | ENGINEerr(ENGINE_F_ENGINE_SET_RSA, | |
438 | ERR_R_PASSED_NULL_PARAMETER); | |
439 | return 0; | |
440 | } | |
441 | e->rsa_meth = rsa_meth; | |
442 | return 1; | |
443 | } | |
444 | ||
445 | int ENGINE_set_DSA(ENGINE *e, DSA_METHOD *dsa_meth) | |
446 | { | |
447 | if((e == NULL) || (dsa_meth == NULL)) | |
448 | { | |
449 | ENGINEerr(ENGINE_F_ENGINE_SET_DSA, | |
450 | ERR_R_PASSED_NULL_PARAMETER); | |
451 | return 0; | |
452 | } | |
453 | e->dsa_meth = dsa_meth; | |
454 | return 1; | |
455 | } | |
456 | ||
457 | int ENGINE_set_DH(ENGINE *e, DH_METHOD *dh_meth) | |
458 | { | |
459 | if((e == NULL) || (dh_meth == NULL)) | |
460 | { | |
461 | ENGINEerr(ENGINE_F_ENGINE_SET_DH, | |
462 | ERR_R_PASSED_NULL_PARAMETER); | |
463 | return 0; | |
464 | } | |
465 | e->dh_meth = dh_meth; | |
466 | return 1; | |
467 | } | |
468 | ||
469 | int ENGINE_set_RAND(ENGINE *e, RAND_METHOD *rand_meth) | |
470 | { | |
471 | if((e == NULL) || (rand_meth == NULL)) | |
472 | { | |
473 | ENGINEerr(ENGINE_F_ENGINE_SET_RAND, | |
474 | ERR_R_PASSED_NULL_PARAMETER); | |
475 | return 0; | |
476 | } | |
477 | e->rand_meth = rand_meth; | |
478 | return 1; | |
479 | } | |
480 | ||
481 | int ENGINE_set_BN_mod_exp(ENGINE *e, BN_MOD_EXP bn_mod_exp) | |
482 | { | |
483 | if((e == NULL) || (bn_mod_exp == NULL)) | |
484 | { | |
485 | ENGINEerr(ENGINE_F_ENGINE_SET_BN_MOD_EXP, | |
486 | ERR_R_PASSED_NULL_PARAMETER); | |
487 | return 0; | |
488 | } | |
489 | e->bn_mod_exp = bn_mod_exp; | |
490 | return 1; | |
491 | } | |
492 | ||
493 | int ENGINE_set_BN_mod_exp_crt(ENGINE *e, BN_MOD_EXP_CRT bn_mod_exp_crt) | |
494 | { | |
495 | if((e == NULL) || (bn_mod_exp_crt == NULL)) | |
496 | { | |
497 | ENGINEerr(ENGINE_F_ENGINE_SET_BN_MOD_EXP_CRT, | |
498 | ERR_R_PASSED_NULL_PARAMETER); | |
499 | return 0; | |
500 | } | |
501 | e->bn_mod_exp_crt = bn_mod_exp_crt; | |
502 | return 1; | |
503 | } | |
504 | ||
505 | int ENGINE_set_init_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR init_f) | |
506 | { | |
507 | if((e == NULL) || (init_f == NULL)) | |
508 | { | |
509 | ENGINEerr(ENGINE_F_ENGINE_SET_INIT_FUNCTION, | |
510 | ERR_R_PASSED_NULL_PARAMETER); | |
511 | return 0; | |
512 | } | |
513 | e->init = init_f; | |
514 | return 1; | |
515 | } | |
516 | ||
517 | int ENGINE_set_finish_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR finish_f) | |
518 | { | |
519 | if((e == NULL) || (finish_f == NULL)) | |
520 | { | |
521 | ENGINEerr(ENGINE_F_ENGINE_SET_FINISH_FUNCTION, | |
522 | ERR_R_PASSED_NULL_PARAMETER); | |
523 | return 0; | |
524 | } | |
525 | e->finish = finish_f; | |
526 | return 1; | |
527 | } | |
528 | ||
529 | int ENGINE_set_ctrl_function(ENGINE *e, ENGINE_CTRL_FUNC_PTR ctrl_f) | |
530 | { | |
531 | if((e == NULL) || (ctrl_f == NULL)) | |
532 | { | |
533 | ENGINEerr(ENGINE_F_ENGINE_SET_CTRL_FUNCTION, | |
534 | ERR_R_PASSED_NULL_PARAMETER); | |
535 | return 0; | |
536 | } | |
537 | e->ctrl = ctrl_f; | |
538 | return 1; | |
539 | } | |
540 | ||
541 | const char *ENGINE_get_id(ENGINE *e) | |
542 | { | |
543 | if(e == NULL) | |
544 | { | |
545 | ENGINEerr(ENGINE_F_ENGINE_GET_ID, | |
546 | ERR_R_PASSED_NULL_PARAMETER); | |
547 | return 0; | |
548 | } | |
549 | return e->id; | |
550 | } | |
551 | ||
552 | const char *ENGINE_get_name(ENGINE *e) | |
553 | { | |
554 | if(e == NULL) | |
555 | { | |
556 | ENGINEerr(ENGINE_F_ENGINE_GET_NAME, | |
557 | ERR_R_PASSED_NULL_PARAMETER); | |
558 | return 0; | |
559 | } | |
560 | return e->name; | |
561 | } | |
562 | ||
10e473e9 | 563 | const RSA_METHOD *ENGINE_get_RSA(ENGINE *e) |
5270e702 RL |
564 | { |
565 | if(e == NULL) | |
566 | { | |
567 | ENGINEerr(ENGINE_F_ENGINE_GET_RSA, | |
568 | ERR_R_PASSED_NULL_PARAMETER); | |
569 | return NULL; | |
570 | } | |
571 | return e->rsa_meth; | |
572 | } | |
573 | ||
574 | DSA_METHOD *ENGINE_get_DSA(ENGINE *e) | |
575 | { | |
576 | if(e == NULL) | |
577 | { | |
578 | ENGINEerr(ENGINE_F_ENGINE_GET_DSA, | |
579 | ERR_R_PASSED_NULL_PARAMETER); | |
580 | return NULL; | |
581 | } | |
582 | return e->dsa_meth; | |
583 | } | |
584 | ||
585 | DH_METHOD *ENGINE_get_DH(ENGINE *e) | |
586 | { | |
587 | if(e == NULL) | |
588 | { | |
589 | ENGINEerr(ENGINE_F_ENGINE_GET_DH, | |
590 | ERR_R_PASSED_NULL_PARAMETER); | |
591 | return NULL; | |
592 | } | |
593 | return e->dh_meth; | |
594 | } | |
595 | ||
596 | RAND_METHOD *ENGINE_get_RAND(ENGINE *e) | |
597 | { | |
598 | if(e == NULL) | |
599 | { | |
600 | ENGINEerr(ENGINE_F_ENGINE_GET_RAND, | |
601 | ERR_R_PASSED_NULL_PARAMETER); | |
602 | return NULL; | |
603 | } | |
604 | return e->rand_meth; | |
605 | } | |
606 | ||
607 | BN_MOD_EXP ENGINE_get_BN_mod_exp(ENGINE *e) | |
608 | { | |
609 | if(e == NULL) | |
610 | { | |
611 | ENGINEerr(ENGINE_F_ENGINE_GET_BN_MOD_EXP, | |
612 | ERR_R_PASSED_NULL_PARAMETER); | |
613 | return NULL; | |
614 | } | |
615 | return e->bn_mod_exp; | |
616 | } | |
617 | ||
618 | BN_MOD_EXP_CRT ENGINE_get_BN_mod_exp_crt(ENGINE *e) | |
619 | { | |
620 | if(e == NULL) | |
621 | { | |
622 | ENGINEerr(ENGINE_F_ENGINE_GET_BN_MOD_EXP_CRT, | |
623 | ERR_R_PASSED_NULL_PARAMETER); | |
624 | return NULL; | |
625 | } | |
626 | return e->bn_mod_exp_crt; | |
627 | } | |
628 | ||
629 | ENGINE_GEN_INT_FUNC_PTR ENGINE_get_init_function(ENGINE *e) | |
630 | { | |
631 | if(e == NULL) | |
632 | { | |
633 | ENGINEerr(ENGINE_F_ENGINE_GET_INIT_FUNCTION, | |
634 | ERR_R_PASSED_NULL_PARAMETER); | |
635 | return NULL; | |
636 | } | |
637 | return e->init; | |
638 | } | |
639 | ||
640 | ENGINE_GEN_INT_FUNC_PTR ENGINE_get_finish_function(ENGINE *e) | |
641 | { | |
642 | if(e == NULL) | |
643 | { | |
644 | ENGINEerr(ENGINE_F_ENGINE_GET_FINISH_FUNCTION, | |
645 | ERR_R_PASSED_NULL_PARAMETER); | |
646 | return NULL; | |
647 | } | |
648 | return e->finish; | |
649 | } | |
650 | ||
651 | ENGINE_CTRL_FUNC_PTR ENGINE_get_ctrl_function(ENGINE *e) | |
652 | { | |
653 | if(e == NULL) | |
654 | { | |
655 | ENGINEerr(ENGINE_F_ENGINE_GET_CTRL_FUNCTION, | |
656 | ERR_R_PASSED_NULL_PARAMETER); | |
657 | return NULL; | |
658 | } | |
659 | return e->ctrl; | |
660 | } | |
661 |