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ece9304c | 1 | /* |
4333b89f | 2 | * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved. |
ece9304c RL |
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 | #include <openssl/core.h> | |
11 | #include <openssl/core_dispatch.h> | |
12 | #include <openssl/decoder.h> | |
13 | #include <openssl/ui.h> | |
14 | #include "internal/core.h" | |
15 | #include "internal/namemap.h" | |
16 | #include "internal/property.h" | |
17 | #include "internal/provider.h" | |
63f187cf | 18 | #include "crypto/decoder.h" |
ece9304c RL |
19 | #include "encoder_local.h" |
20 | ||
ece9304c RL |
21 | /* |
22 | * Decoder can have multiple names, separated with colons in a name string | |
23 | */ | |
24 | #define NAME_SEPARATOR ':' | |
25 | ||
26 | /* Simple method structure constructor and destructor */ | |
27 | static OSSL_DECODER *ossl_decoder_new(void) | |
28 | { | |
29 | OSSL_DECODER *decoder = NULL; | |
30 | ||
31 | if ((decoder = OPENSSL_zalloc(sizeof(*decoder))) == NULL | |
32 | || (decoder->base.lock = CRYPTO_THREAD_lock_new()) == NULL) { | |
33 | OSSL_DECODER_free(decoder); | |
34 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE); | |
35 | return NULL; | |
36 | } | |
37 | ||
38 | decoder->base.refcnt = 1; | |
39 | ||
40 | return decoder; | |
41 | } | |
42 | ||
43 | int OSSL_DECODER_up_ref(OSSL_DECODER *decoder) | |
44 | { | |
45 | int ref = 0; | |
46 | ||
47 | CRYPTO_UP_REF(&decoder->base.refcnt, &ref, decoder->base.lock); | |
48 | return 1; | |
49 | } | |
50 | ||
51 | void OSSL_DECODER_free(OSSL_DECODER *decoder) | |
52 | { | |
53 | int ref = 0; | |
54 | ||
55 | if (decoder == NULL) | |
56 | return; | |
57 | ||
58 | CRYPTO_DOWN_REF(&decoder->base.refcnt, &ref, decoder->base.lock); | |
59 | if (ref > 0) | |
60 | return; | |
61 | ossl_provider_free(decoder->base.prov); | |
62 | CRYPTO_THREAD_lock_free(decoder->base.lock); | |
63 | OPENSSL_free(decoder); | |
64 | } | |
65 | ||
66 | /* Permanent decoder method store, constructor and destructor */ | |
67 | static void decoder_store_free(void *vstore) | |
68 | { | |
69 | ossl_method_store_free(vstore); | |
70 | } | |
71 | ||
b4250010 | 72 | static void *decoder_store_new(OSSL_LIB_CTX *ctx) |
ece9304c RL |
73 | { |
74 | return ossl_method_store_new(ctx); | |
75 | } | |
76 | ||
77 | ||
b4250010 | 78 | static const OSSL_LIB_CTX_METHOD decoder_store_method = { |
ece9304c RL |
79 | decoder_store_new, |
80 | decoder_store_free, | |
81 | }; | |
82 | ||
83 | /* Data to be passed through ossl_method_construct() */ | |
84 | struct decoder_data_st { | |
b4250010 | 85 | OSSL_LIB_CTX *libctx; |
ece9304c RL |
86 | OSSL_METHOD_CONSTRUCT_METHOD *mcm; |
87 | int id; /* For get_decoder_from_store() */ | |
88 | const char *names; /* For get_decoder_from_store() */ | |
89 | const char *propquery; /* For get_decoder_from_store() */ | |
d6d42cda RL |
90 | |
91 | unsigned int flag_construct_error_occured : 1; | |
ece9304c RL |
92 | }; |
93 | ||
94 | /* | |
95 | * Generic routines to fetch / create DECODER methods with | |
96 | * ossl_method_construct() | |
97 | */ | |
98 | ||
99 | /* Temporary decoder method store, constructor and destructor */ | |
b4250010 | 100 | static void *alloc_tmp_decoder_store(OSSL_LIB_CTX *ctx) |
ece9304c RL |
101 | { |
102 | return ossl_method_store_new(ctx); | |
103 | } | |
104 | ||
105 | static void dealloc_tmp_decoder_store(void *store) | |
106 | { | |
107 | if (store != NULL) | |
108 | ossl_method_store_free(store); | |
109 | } | |
110 | ||
111 | /* Get the permanent decoder store */ | |
b4250010 | 112 | static OSSL_METHOD_STORE *get_decoder_store(OSSL_LIB_CTX *libctx) |
ece9304c | 113 | { |
b4250010 DMSP |
114 | return ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_DECODER_STORE_INDEX, |
115 | &decoder_store_method); | |
ece9304c RL |
116 | } |
117 | ||
118 | /* Get decoder methods from a store, or put one in */ | |
b4250010 | 119 | static void *get_decoder_from_store(OSSL_LIB_CTX *libctx, void *store, |
ece9304c RL |
120 | void *data) |
121 | { | |
122 | struct decoder_data_st *methdata = data; | |
123 | void *method = NULL; | |
124 | int id; | |
125 | ||
126 | if ((id = methdata->id) == 0) { | |
127 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); | |
128 | ||
129 | id = ossl_namemap_name2num(namemap, methdata->names); | |
130 | } | |
131 | ||
132 | if (store == NULL | |
133 | && (store = get_decoder_store(libctx)) == NULL) | |
134 | return NULL; | |
135 | ||
136 | if (!ossl_method_store_fetch(store, id, methdata->propquery, &method)) | |
137 | return NULL; | |
138 | return method; | |
139 | } | |
140 | ||
b4250010 | 141 | static int put_decoder_in_store(OSSL_LIB_CTX *libctx, void *store, |
ece9304c RL |
142 | void *method, const OSSL_PROVIDER *prov, |
143 | int operation_id, const char *names, | |
144 | const char *propdef, void *unused) | |
145 | { | |
146 | OSSL_NAMEMAP *namemap; | |
147 | int id; | |
148 | ||
149 | if ((namemap = ossl_namemap_stored(libctx)) == NULL | |
150 | || (id = ossl_namemap_name2num(namemap, names)) == 0) | |
151 | return 0; | |
152 | ||
153 | if (store == NULL && (store = get_decoder_store(libctx)) == NULL) | |
154 | return 0; | |
155 | ||
156 | return ossl_method_store_add(store, prov, id, propdef, method, | |
157 | (int (*)(void *))OSSL_DECODER_up_ref, | |
158 | (void (*)(void *))OSSL_DECODER_free); | |
159 | } | |
160 | ||
161 | /* Create and populate a decoder method */ | |
63f187cf RL |
162 | void *ossl_decoder_from_dispatch(int id, const OSSL_ALGORITHM *algodef, |
163 | OSSL_PROVIDER *prov) | |
ece9304c RL |
164 | { |
165 | OSSL_DECODER *decoder = NULL; | |
166 | const OSSL_DISPATCH *fns = algodef->implementation; | |
167 | ||
168 | if ((decoder = ossl_decoder_new()) == NULL) | |
169 | return NULL; | |
170 | decoder->base.id = id; | |
171 | decoder->base.propdef = algodef->property_definition; | |
172 | ||
173 | for (; fns->function_id != 0; fns++) { | |
174 | switch (fns->function_id) { | |
175 | case OSSL_FUNC_DECODER_NEWCTX: | |
176 | if (decoder->newctx == NULL) | |
177 | decoder->newctx = OSSL_FUNC_decoder_newctx(fns); | |
178 | break; | |
179 | case OSSL_FUNC_DECODER_FREECTX: | |
180 | if (decoder->freectx == NULL) | |
181 | decoder->freectx = OSSL_FUNC_decoder_freectx(fns); | |
182 | break; | |
183 | case OSSL_FUNC_DECODER_GET_PARAMS: | |
184 | if (decoder->get_params == NULL) | |
185 | decoder->get_params = | |
186 | OSSL_FUNC_decoder_get_params(fns); | |
187 | break; | |
188 | case OSSL_FUNC_DECODER_GETTABLE_PARAMS: | |
189 | if (decoder->gettable_params == NULL) | |
190 | decoder->gettable_params = | |
191 | OSSL_FUNC_decoder_gettable_params(fns); | |
192 | break; | |
193 | case OSSL_FUNC_DECODER_SET_CTX_PARAMS: | |
194 | if (decoder->set_ctx_params == NULL) | |
195 | decoder->set_ctx_params = | |
196 | OSSL_FUNC_decoder_set_ctx_params(fns); | |
197 | break; | |
198 | case OSSL_FUNC_DECODER_SETTABLE_CTX_PARAMS: | |
199 | if (decoder->settable_ctx_params == NULL) | |
200 | decoder->settable_ctx_params = | |
201 | OSSL_FUNC_decoder_settable_ctx_params(fns); | |
202 | break; | |
67c91ca2 RL |
203 | case OSSL_FUNC_DECODER_DOES_SELECTION: |
204 | if (decoder->does_selection == NULL) | |
205 | decoder->does_selection = | |
206 | OSSL_FUNC_decoder_does_selection(fns); | |
207 | break; | |
ece9304c RL |
208 | case OSSL_FUNC_DECODER_DECODE: |
209 | if (decoder->decode == NULL) | |
210 | decoder->decode = OSSL_FUNC_decoder_decode(fns); | |
211 | break; | |
212 | case OSSL_FUNC_DECODER_EXPORT_OBJECT: | |
213 | if (decoder->export_object == NULL) | |
214 | decoder->export_object = OSSL_FUNC_decoder_export_object(fns); | |
215 | break; | |
216 | } | |
217 | } | |
218 | /* | |
219 | * Try to check that the method is sensible. | |
220 | * If you have a constructor, you must have a destructor and vice versa. | |
221 | * You must have at least one of the encoding driver functions. | |
222 | */ | |
223 | if (!((decoder->newctx == NULL && decoder->freectx == NULL) | |
224 | || (decoder->newctx != NULL && decoder->freectx != NULL)) | |
c1aba076 | 225 | || decoder->decode == NULL) { |
ece9304c RL |
226 | OSSL_DECODER_free(decoder); |
227 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_INVALID_PROVIDER_FUNCTIONS); | |
228 | return NULL; | |
229 | } | |
230 | ||
231 | if (prov != NULL && !ossl_provider_up_ref(prov)) { | |
232 | OSSL_DECODER_free(decoder); | |
233 | return NULL; | |
234 | } | |
235 | ||
236 | decoder->base.prov = prov; | |
237 | return decoder; | |
238 | } | |
239 | ||
240 | ||
241 | /* | |
242 | * The core fetching functionality passes the names of the implementation. | |
243 | * This function is responsible to getting an identity number for them, | |
63f187cf | 244 | * then call ossl_decoder_from_dispatch() with that identity number. |
ece9304c RL |
245 | */ |
246 | static void *construct_decoder(const OSSL_ALGORITHM *algodef, | |
d6d42cda | 247 | OSSL_PROVIDER *prov, void *data) |
ece9304c RL |
248 | { |
249 | /* | |
250 | * This function is only called if get_decoder_from_store() returned | |
251 | * NULL, so it's safe to say that of all the spots to create a new | |
252 | * namemap entry, this is it. Should the name already exist there, we | |
253 | * know that ossl_namemap_add() will return its corresponding number. | |
254 | */ | |
d6d42cda | 255 | struct decoder_data_st *methdata = data; |
a829b735 | 256 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov); |
ece9304c RL |
257 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
258 | const char *names = algodef->algorithm_names; | |
259 | int id = ossl_namemap_add_names(namemap, 0, names, NAME_SEPARATOR); | |
260 | void *method = NULL; | |
261 | ||
262 | if (id != 0) | |
63f187cf | 263 | method = ossl_decoder_from_dispatch(id, algodef, prov); |
ece9304c | 264 | |
d6d42cda RL |
265 | /* |
266 | * Flag to indicate that there was actual construction errors. This | |
267 | * helps inner_evp_generic_fetch() determine what error it should | |
268 | * record on inaccessible algorithms. | |
269 | */ | |
270 | if (method == NULL) | |
271 | methdata->flag_construct_error_occured = 1; | |
272 | ||
ece9304c RL |
273 | return method; |
274 | } | |
275 | ||
276 | /* Intermediary function to avoid ugly casts, used below */ | |
277 | static void destruct_decoder(void *method, void *data) | |
278 | { | |
279 | OSSL_DECODER_free(method); | |
280 | } | |
281 | ||
282 | static int up_ref_decoder(void *method) | |
283 | { | |
284 | return OSSL_DECODER_up_ref(method); | |
285 | } | |
286 | ||
287 | static void free_decoder(void *method) | |
288 | { | |
289 | OSSL_DECODER_free(method); | |
290 | } | |
291 | ||
292 | /* Fetching support. Can fetch by numeric identity or by name */ | |
b4250010 | 293 | static OSSL_DECODER *inner_ossl_decoder_fetch(OSSL_LIB_CTX *libctx, int id, |
ece9304c RL |
294 | const char *name, |
295 | const char *properties) | |
296 | { | |
297 | OSSL_METHOD_STORE *store = get_decoder_store(libctx); | |
298 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); | |
299 | void *method = NULL; | |
d6d42cda | 300 | int unsupported = 0; |
ece9304c | 301 | |
d6d42cda RL |
302 | if (store == NULL || namemap == NULL) { |
303 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_INVALID_ARGUMENT); | |
ece9304c | 304 | return NULL; |
d6d42cda | 305 | } |
ece9304c RL |
306 | |
307 | /* | |
308 | * If we have been passed neither a name_id or a name, we have an | |
309 | * internal programming error. | |
310 | */ | |
d6d42cda RL |
311 | if (!ossl_assert(id != 0 || name != NULL)) { |
312 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_INTERNAL_ERROR); | |
ece9304c | 313 | return NULL; |
d6d42cda | 314 | } |
ece9304c RL |
315 | |
316 | if (id == 0) | |
317 | id = ossl_namemap_name2num(namemap, name); | |
318 | ||
d6d42cda RL |
319 | /* |
320 | * If we haven't found the name yet, chances are that the algorithm to | |
321 | * be fetched is unsupported. | |
322 | */ | |
323 | if (id == 0) | |
324 | unsupported = 1; | |
325 | ||
ece9304c RL |
326 | if (id == 0 |
327 | || !ossl_method_store_cache_get(store, id, properties, &method)) { | |
328 | OSSL_METHOD_CONSTRUCT_METHOD mcm = { | |
329 | alloc_tmp_decoder_store, | |
330 | dealloc_tmp_decoder_store, | |
331 | get_decoder_from_store, | |
332 | put_decoder_in_store, | |
333 | construct_decoder, | |
334 | destruct_decoder | |
335 | }; | |
336 | struct decoder_data_st mcmdata; | |
337 | ||
338 | mcmdata.libctx = libctx; | |
339 | mcmdata.mcm = &mcm; | |
340 | mcmdata.id = id; | |
341 | mcmdata.names = name; | |
342 | mcmdata.propquery = properties; | |
d6d42cda | 343 | mcmdata.flag_construct_error_occured = 0; |
ece9304c RL |
344 | if ((method = ossl_method_construct(libctx, OSSL_OP_DECODER, |
345 | 0 /* !force_cache */, | |
346 | &mcm, &mcmdata)) != NULL) { | |
347 | /* | |
348 | * If construction did create a method for us, we know that | |
349 | * there is a correct name_id and meth_id, since those have | |
350 | * already been calculated in get_decoder_from_store() and | |
351 | * put_decoder_in_store() above. | |
352 | */ | |
353 | if (id == 0) | |
354 | id = ossl_namemap_name2num(namemap, name); | |
355 | ossl_method_store_cache_set(store, id, properties, method, | |
356 | up_ref_decoder, free_decoder); | |
357 | } | |
d6d42cda RL |
358 | |
359 | /* | |
360 | * If we never were in the constructor, the algorithm to be fetched | |
361 | * is unsupported. | |
362 | */ | |
363 | unsupported = !mcmdata.flag_construct_error_occured; | |
364 | } | |
365 | ||
366 | if (method == NULL) { | |
367 | int code = unsupported ? ERR_R_UNSUPPORTED : ERR_R_FETCH_FAILED; | |
368 | ||
369 | if (name == NULL) | |
370 | name = ossl_namemap_num2name(namemap, id, 0); | |
371 | ERR_raise_data(ERR_LIB_OSSL_DECODER, code, | |
372 | "%s, Name (%s : %d), Properties (%s)", | |
373 | ossl_lib_ctx_get_descriptor(libctx), | |
374 | name = NULL ? "<null>" : name, id, | |
375 | properties == NULL ? "<null>" : properties); | |
ece9304c RL |
376 | } |
377 | ||
378 | return method; | |
379 | } | |
380 | ||
b4250010 | 381 | OSSL_DECODER *OSSL_DECODER_fetch(OSSL_LIB_CTX *libctx, const char *name, |
ece9304c RL |
382 | const char *properties) |
383 | { | |
384 | return inner_ossl_decoder_fetch(libctx, 0, name, properties); | |
385 | } | |
386 | ||
b4250010 | 387 | OSSL_DECODER *ossl_decoder_fetch_by_number(OSSL_LIB_CTX *libctx, int id, |
ece9304c RL |
388 | const char *properties) |
389 | { | |
390 | return inner_ossl_decoder_fetch(libctx, id, NULL, properties); | |
391 | } | |
392 | ||
393 | /* | |
394 | * Library of basic method functions | |
395 | */ | |
396 | ||
397 | const OSSL_PROVIDER *OSSL_DECODER_provider(const OSSL_DECODER *decoder) | |
398 | { | |
399 | if (!ossl_assert(decoder != NULL)) { | |
400 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
401 | return 0; | |
402 | } | |
403 | ||
404 | return decoder->base.prov; | |
405 | } | |
406 | ||
407 | const char *OSSL_DECODER_properties(const OSSL_DECODER *decoder) | |
408 | { | |
409 | if (!ossl_assert(decoder != NULL)) { | |
410 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
411 | return 0; | |
412 | } | |
413 | ||
414 | return decoder->base.propdef; | |
415 | } | |
416 | ||
417 | int OSSL_DECODER_number(const OSSL_DECODER *decoder) | |
418 | { | |
419 | if (!ossl_assert(decoder != NULL)) { | |
420 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
421 | return 0; | |
422 | } | |
423 | ||
424 | return decoder->base.id; | |
425 | } | |
426 | ||
427 | int OSSL_DECODER_is_a(const OSSL_DECODER *decoder, const char *name) | |
428 | { | |
429 | if (decoder->base.prov != NULL) { | |
a829b735 | 430 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov); |
ece9304c RL |
431 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
432 | ||
433 | return ossl_namemap_name2num(namemap, name) == decoder->base.id; | |
434 | } | |
435 | return 0; | |
436 | } | |
437 | ||
438 | struct decoder_do_all_data_st { | |
439 | void (*user_fn)(void *method, void *arg); | |
440 | void *user_arg; | |
441 | }; | |
442 | ||
443 | static void decoder_do_one(OSSL_PROVIDER *provider, | |
444 | const OSSL_ALGORITHM *algodef, | |
445 | int no_store, void *vdata) | |
446 | { | |
447 | struct decoder_do_all_data_st *data = vdata; | |
a829b735 | 448 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(provider); |
ece9304c RL |
449 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
450 | const char *names = algodef->algorithm_names; | |
451 | int id = ossl_namemap_add_names(namemap, 0, names, NAME_SEPARATOR); | |
452 | void *method = NULL; | |
453 | ||
454 | if (id != 0) | |
63f187cf | 455 | method = ossl_decoder_from_dispatch(id, algodef, provider); |
ece9304c RL |
456 | |
457 | if (method != NULL) { | |
458 | data->user_fn(method, data->user_arg); | |
459 | OSSL_DECODER_free(method); | |
460 | } | |
461 | } | |
462 | ||
b4250010 | 463 | void OSSL_DECODER_do_all_provided(OSSL_LIB_CTX *libctx, |
ece9304c RL |
464 | void (*fn)(OSSL_DECODER *decoder, void *arg), |
465 | void *arg) | |
466 | { | |
467 | struct decoder_do_all_data_st data; | |
468 | ||
469 | data.user_fn = (void (*)(void *, void *))fn; | |
470 | data.user_arg = arg; | |
471 | ossl_algorithm_do_all(libctx, OSSL_OP_DECODER, NULL, | |
472 | NULL, decoder_do_one, NULL, | |
473 | &data); | |
474 | } | |
475 | ||
476 | void OSSL_DECODER_names_do_all(const OSSL_DECODER *decoder, | |
477 | void (*fn)(const char *name, void *data), | |
478 | void *data) | |
479 | { | |
480 | if (decoder == NULL) | |
481 | return; | |
482 | ||
483 | if (decoder->base.prov != NULL) { | |
a829b735 | 484 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov); |
ece9304c RL |
485 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
486 | ||
487 | ossl_namemap_doall_names(namemap, decoder->base.id, fn, data); | |
488 | } | |
489 | } | |
490 | ||
491 | const OSSL_PARAM * | |
492 | OSSL_DECODER_gettable_params(OSSL_DECODER *decoder) | |
493 | { | |
494 | if (decoder != NULL && decoder->gettable_params != NULL) { | |
495 | void *provctx = ossl_provider_ctx(OSSL_DECODER_provider(decoder)); | |
496 | ||
497 | return decoder->gettable_params(provctx); | |
498 | } | |
499 | return NULL; | |
500 | } | |
501 | ||
502 | int OSSL_DECODER_get_params(OSSL_DECODER *decoder, OSSL_PARAM params[]) | |
503 | { | |
504 | if (decoder != NULL && decoder->get_params != NULL) | |
505 | return decoder->get_params(params); | |
506 | return 0; | |
507 | } | |
508 | ||
509 | const OSSL_PARAM * | |
510 | OSSL_DECODER_settable_ctx_params(OSSL_DECODER *decoder) | |
511 | { | |
512 | if (decoder != NULL && decoder->settable_ctx_params != NULL) { | |
513 | void *provctx = ossl_provider_ctx(OSSL_DECODER_provider(decoder)); | |
514 | ||
515 | return decoder->settable_ctx_params(provctx); | |
516 | } | |
517 | return NULL; | |
518 | } | |
519 | ||
520 | /* | |
521 | * Decoder context support | |
522 | */ | |
523 | ||
524 | /* | |
525 | * |encoder| value NULL is valid, and signifies that there is no decoder. | |
526 | * This is useful to provide fallback mechanisms. | |
527 | * Functions that want to verify if there is a decoder can do so with | |
528 | * OSSL_DECODER_CTX_get_decoder() | |
529 | */ | |
530 | OSSL_DECODER_CTX *OSSL_DECODER_CTX_new(void) | |
531 | { | |
532 | OSSL_DECODER_CTX *ctx; | |
533 | ||
48b62fb3 | 534 | if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL) |
ece9304c | 535 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE); |
ece9304c | 536 | |
ece9304c RL |
537 | return ctx; |
538 | } | |
539 | ||
540 | int OSSL_DECODER_CTX_set_params(OSSL_DECODER_CTX *ctx, | |
541 | const OSSL_PARAM params[]) | |
542 | { | |
9096809b | 543 | int ok = 1; |
ece9304c RL |
544 | size_t i; |
545 | size_t l; | |
546 | ||
547 | if (!ossl_assert(ctx != NULL)) { | |
548 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
549 | return 0; | |
550 | } | |
551 | ||
552 | if (ctx->decoder_insts == NULL) | |
553 | return 1; | |
554 | ||
48b62fb3 | 555 | l = OSSL_DECODER_CTX_get_num_decoders(ctx); |
ece9304c RL |
556 | for (i = 0; i < l; i++) { |
557 | OSSL_DECODER_INSTANCE *decoder_inst = | |
558 | sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, i); | |
48b62fb3 RL |
559 | OSSL_DECODER *decoder = |
560 | OSSL_DECODER_INSTANCE_get_decoder(decoder_inst); | |
561 | OSSL_DECODER *decoderctx = | |
562 | OSSL_DECODER_INSTANCE_get_decoder_ctx(decoder_inst); | |
ece9304c | 563 | |
48b62fb3 | 564 | if (decoderctx == NULL || decoder->set_ctx_params == NULL) |
ece9304c | 565 | continue; |
48b62fb3 | 566 | if (!decoder->set_ctx_params(decoderctx, params)) |
9096809b | 567 | ok = 0; |
ece9304c | 568 | } |
9096809b | 569 | return ok; |
ece9304c RL |
570 | } |
571 | ||
ece9304c RL |
572 | void OSSL_DECODER_CTX_free(OSSL_DECODER_CTX *ctx) |
573 | { | |
574 | if (ctx != NULL) { | |
575 | if (ctx->cleanup != NULL) | |
576 | ctx->cleanup(ctx->construct_data); | |
577 | sk_OSSL_DECODER_INSTANCE_pop_free(ctx->decoder_insts, | |
48b62fb3 | 578 | ossl_decoder_instance_free); |
a517edec | 579 | ossl_pw_clear_passphrase_data(&ctx->pwdata); |
ece9304c RL |
580 | OPENSSL_free(ctx); |
581 | } | |
582 | } |