1 /*
2 * Copyright 2020-2021 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 #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"
18 #include "crypto/decoder.h"
19 #include "encoder_local.h"
20
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 */
ossl_decoder_new(void)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
OSSL_DECODER_up_ref(OSSL_DECODER * decoder)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
OSSL_DECODER_free(OSSL_DECODER * decoder)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 OPENSSL_free(decoder->base.name);
62 ossl_property_free(decoder->base.parsed_propdef);
63 ossl_provider_free(decoder->base.prov);
64 CRYPTO_THREAD_lock_free(decoder->base.lock);
65 OPENSSL_free(decoder);
66 }
67
68 /* Permanent decoder method store, constructor and destructor */
decoder_store_free(void * vstore)69 static void decoder_store_free(void *vstore)
70 {
71 ossl_method_store_free(vstore);
72 }
73
decoder_store_new(OSSL_LIB_CTX * ctx)74 static void *decoder_store_new(OSSL_LIB_CTX *ctx)
75 {
76 return ossl_method_store_new(ctx);
77 }
78
79
80 static const OSSL_LIB_CTX_METHOD decoder_store_method = {
81 /* We want decoder_store to be cleaned up before the provider store */
82 OSSL_LIB_CTX_METHOD_PRIORITY_2,
83 decoder_store_new,
84 decoder_store_free,
85 };
86
87 /* Data to be passed through ossl_method_construct() */
88 struct decoder_data_st {
89 OSSL_LIB_CTX *libctx;
90 int id; /* For get_decoder_from_store() */
91 const char *names; /* For get_decoder_from_store() */
92 const char *propquery; /* For get_decoder_from_store() */
93
94 OSSL_METHOD_STORE *tmp_store; /* For get_tmp_decoder_store() */
95
96 unsigned int flag_construct_error_occurred : 1;
97 };
98
99 /*
100 * Generic routines to fetch / create DECODER methods with
101 * ossl_method_construct()
102 */
103
104 /* Temporary decoder method store, constructor and destructor */
get_tmp_decoder_store(void * data)105 static void *get_tmp_decoder_store(void *data)
106 {
107 struct decoder_data_st *methdata = data;
108
109 if (methdata->tmp_store == NULL)
110 methdata->tmp_store = ossl_method_store_new(methdata->libctx);
111 return methdata->tmp_store;
112 }
113
dealloc_tmp_decoder_store(void * store)114 static void dealloc_tmp_decoder_store(void *store)
115 {
116 if (store != NULL)
117 ossl_method_store_free(store);
118 }
119
120 /* Get the permanent decoder store */
get_decoder_store(OSSL_LIB_CTX * libctx)121 static OSSL_METHOD_STORE *get_decoder_store(OSSL_LIB_CTX *libctx)
122 {
123 return ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_DECODER_STORE_INDEX,
124 &decoder_store_method);
125 }
126
127 /* Get decoder methods from a store, or put one in */
get_decoder_from_store(void * store,void * data)128 static void *get_decoder_from_store(void *store, void *data)
129 {
130 struct decoder_data_st *methdata = data;
131 void *method = NULL;
132 int id;
133
134 /*
135 * get_decoder_from_store() is only called to try and get the method
136 * that OSSL_DECODER_fetch() is asking for, and the name or name id are
137 * passed via methdata.
138 */
139 if ((id = methdata->id) == 0 && methdata->names != NULL) {
140 OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx);
141 const char *names = methdata->names;
142 const char *q = strchr(names, NAME_SEPARATOR);
143 size_t l = (q == NULL ? strlen(names) : (size_t)(q - names));
144
145 if (namemap == 0)
146 return NULL;
147 id = ossl_namemap_name2num_n(namemap, names, l);
148 }
149
150 if (id == 0)
151 return NULL;
152
153 if (store == NULL
154 && (store = get_decoder_store(methdata->libctx)) == NULL)
155 return NULL;
156
157 if (!ossl_method_store_fetch(store, id, methdata->propquery, &method))
158 return NULL;
159 return method;
160 }
161
put_decoder_in_store(void * store,void * method,const OSSL_PROVIDER * prov,const char * names,const char * propdef,void * data)162 static int put_decoder_in_store(void *store, void *method,
163 const OSSL_PROVIDER *prov,
164 const char *names, const char *propdef,
165 void *data)
166 {
167 struct decoder_data_st *methdata = data;
168 OSSL_NAMEMAP *namemap;
169 int id;
170 size_t l = 0;
171
172 /*
173 * put_decoder_in_store() is only called with an OSSL_DECODER method that
174 * was successfully created by construct_decoder() below, which means that
175 * all the names should already be stored in the namemap with the same
176 * numeric identity, so just use the first to get that identity.
177 */
178 if (names != NULL) {
179 const char *q = strchr(names, NAME_SEPARATOR);
180
181 l = (q == NULL ? strlen(names) : (size_t)(q - names));
182 }
183
184 if ((namemap = ossl_namemap_stored(methdata->libctx)) == NULL
185 || (id = ossl_namemap_name2num_n(namemap, names, l)) == 0)
186 return 0;
187
188 if (store == NULL && (store = get_decoder_store(methdata->libctx)) == NULL)
189 return 0;
190
191 return ossl_method_store_add(store, prov, id, propdef, method,
192 (int (*)(void *))OSSL_DECODER_up_ref,
193 (void (*)(void *))OSSL_DECODER_free);
194 }
195
196 /* Create and populate a decoder method */
ossl_decoder_from_algorithm(int id,const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov)197 void *ossl_decoder_from_algorithm(int id, const OSSL_ALGORITHM *algodef,
198 OSSL_PROVIDER *prov)
199 {
200 OSSL_DECODER *decoder = NULL;
201 const OSSL_DISPATCH *fns = algodef->implementation;
202 OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
203
204 if ((decoder = ossl_decoder_new()) == NULL)
205 return NULL;
206 decoder->base.id = id;
207 if ((decoder->base.name = ossl_algorithm_get1_first_name(algodef)) == NULL) {
208 OSSL_DECODER_free(decoder);
209 return NULL;
210 }
211 decoder->base.algodef = algodef;
212 decoder->base.parsed_propdef
213 = ossl_parse_property(libctx, algodef->property_definition);
214
215 for (; fns->function_id != 0; fns++) {
216 switch (fns->function_id) {
217 case OSSL_FUNC_DECODER_NEWCTX:
218 if (decoder->newctx == NULL)
219 decoder->newctx = OSSL_FUNC_decoder_newctx(fns);
220 break;
221 case OSSL_FUNC_DECODER_FREECTX:
222 if (decoder->freectx == NULL)
223 decoder->freectx = OSSL_FUNC_decoder_freectx(fns);
224 break;
225 case OSSL_FUNC_DECODER_GET_PARAMS:
226 if (decoder->get_params == NULL)
227 decoder->get_params =
228 OSSL_FUNC_decoder_get_params(fns);
229 break;
230 case OSSL_FUNC_DECODER_GETTABLE_PARAMS:
231 if (decoder->gettable_params == NULL)
232 decoder->gettable_params =
233 OSSL_FUNC_decoder_gettable_params(fns);
234 break;
235 case OSSL_FUNC_DECODER_SET_CTX_PARAMS:
236 if (decoder->set_ctx_params == NULL)
237 decoder->set_ctx_params =
238 OSSL_FUNC_decoder_set_ctx_params(fns);
239 break;
240 case OSSL_FUNC_DECODER_SETTABLE_CTX_PARAMS:
241 if (decoder->settable_ctx_params == NULL)
242 decoder->settable_ctx_params =
243 OSSL_FUNC_decoder_settable_ctx_params(fns);
244 break;
245 case OSSL_FUNC_DECODER_DOES_SELECTION:
246 if (decoder->does_selection == NULL)
247 decoder->does_selection =
248 OSSL_FUNC_decoder_does_selection(fns);
249 break;
250 case OSSL_FUNC_DECODER_DECODE:
251 if (decoder->decode == NULL)
252 decoder->decode = OSSL_FUNC_decoder_decode(fns);
253 break;
254 case OSSL_FUNC_DECODER_EXPORT_OBJECT:
255 if (decoder->export_object == NULL)
256 decoder->export_object = OSSL_FUNC_decoder_export_object(fns);
257 break;
258 }
259 }
260 /*
261 * Try to check that the method is sensible.
262 * If you have a constructor, you must have a destructor and vice versa.
263 * You must have at least one of the encoding driver functions.
264 */
265 if (!((decoder->newctx == NULL && decoder->freectx == NULL)
266 || (decoder->newctx != NULL && decoder->freectx != NULL))
267 || decoder->decode == NULL) {
268 OSSL_DECODER_free(decoder);
269 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_INVALID_PROVIDER_FUNCTIONS);
270 return NULL;
271 }
272
273 if (prov != NULL && !ossl_provider_up_ref(prov)) {
274 OSSL_DECODER_free(decoder);
275 return NULL;
276 }
277
278 decoder->base.prov = prov;
279 return decoder;
280 }
281
282
283 /*
284 * The core fetching functionality passes the names of the implementation.
285 * This function is responsible to getting an identity number for them,
286 * then call ossl_decoder_from_algorithm() with that identity number.
287 */
construct_decoder(const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov,void * data)288 static void *construct_decoder(const OSSL_ALGORITHM *algodef,
289 OSSL_PROVIDER *prov, void *data)
290 {
291 /*
292 * This function is only called if get_decoder_from_store() returned
293 * NULL, so it's safe to say that of all the spots to create a new
294 * namemap entry, this is it. Should the name already exist there, we
295 * know that ossl_namemap_add() will return its corresponding number.
296 */
297 struct decoder_data_st *methdata = data;
298 OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
299 OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
300 const char *names = algodef->algorithm_names;
301 int id = ossl_namemap_add_names(namemap, 0, names, NAME_SEPARATOR);
302 void *method = NULL;
303
304 if (id != 0)
305 method = ossl_decoder_from_algorithm(id, algodef, prov);
306
307 /*
308 * Flag to indicate that there was actual construction errors. This
309 * helps inner_evp_generic_fetch() determine what error it should
310 * record on inaccessible algorithms.
311 */
312 if (method == NULL)
313 methdata->flag_construct_error_occurred = 1;
314
315 return method;
316 }
317
318 /* Intermediary function to avoid ugly casts, used below */
destruct_decoder(void * method,void * data)319 static void destruct_decoder(void *method, void *data)
320 {
321 OSSL_DECODER_free(method);
322 }
323
up_ref_decoder(void * method)324 static int up_ref_decoder(void *method)
325 {
326 return OSSL_DECODER_up_ref(method);
327 }
328
free_decoder(void * method)329 static void free_decoder(void *method)
330 {
331 OSSL_DECODER_free(method);
332 }
333
334 /* Fetching support. Can fetch by numeric identity or by name */
335 static OSSL_DECODER *
inner_ossl_decoder_fetch(struct decoder_data_st * methdata,int id,const char * name,const char * properties)336 inner_ossl_decoder_fetch(struct decoder_data_st *methdata, int id,
337 const char *name, const char *properties)
338 {
339 OSSL_METHOD_STORE *store = get_decoder_store(methdata->libctx);
340 OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx);
341 void *method = NULL;
342 int unsupported = 0;
343
344 if (store == NULL || namemap == NULL) {
345 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_INVALID_ARGUMENT);
346 return NULL;
347 }
348
349 /*
350 * If we have been passed both an id and a name, we have an
351 * internal programming error.
352 */
353 if (!ossl_assert(id == 0 || name == NULL)) {
354 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_INTERNAL_ERROR);
355 return NULL;
356 }
357
358 if (id == 0 && name != NULL)
359 id = ossl_namemap_name2num(namemap, name);
360
361 /*
362 * If we haven't found the name yet, chances are that the algorithm to
363 * be fetched is unsupported.
364 */
365 if (id == 0)
366 unsupported = 1;
367
368 if (id == 0
369 || !ossl_method_store_cache_get(store, id, properties, &method)) {
370 OSSL_METHOD_CONSTRUCT_METHOD mcm = {
371 get_tmp_decoder_store,
372 get_decoder_from_store,
373 put_decoder_in_store,
374 construct_decoder,
375 destruct_decoder
376 };
377
378 methdata->id = id;
379 methdata->names = name;
380 methdata->propquery = properties;
381 methdata->flag_construct_error_occurred = 0;
382 if ((method = ossl_method_construct(methdata->libctx, OSSL_OP_DECODER,
383 0 /* !force_cache */,
384 &mcm, methdata)) != NULL) {
385 /*
386 * If construction did create a method for us, we know that
387 * there is a correct name_id and meth_id, since those have
388 * already been calculated in get_decoder_from_store() and
389 * put_decoder_in_store() above.
390 */
391 if (id == 0 && name != NULL)
392 id = ossl_namemap_name2num(namemap, name);
393 if (id != 0)
394 ossl_method_store_cache_set(store, id, properties, method,
395 up_ref_decoder, free_decoder);
396 }
397
398 /*
399 * If we never were in the constructor, the algorithm to be fetched
400 * is unsupported.
401 */
402 unsupported = !methdata->flag_construct_error_occurred;
403 }
404
405 if ((id != 0 || name != NULL) && method == NULL) {
406 int code = unsupported ? ERR_R_UNSUPPORTED : ERR_R_FETCH_FAILED;
407
408 if (name == NULL)
409 name = ossl_namemap_num2name(namemap, id, 0);
410 ERR_raise_data(ERR_LIB_OSSL_DECODER, code,
411 "%s, Name (%s : %d), Properties (%s)",
412 ossl_lib_ctx_get_descriptor(methdata->libctx),
413 name = NULL ? "<null>" : name, id,
414 properties == NULL ? "<null>" : properties);
415 }
416
417 return method;
418 }
419
OSSL_DECODER_fetch(OSSL_LIB_CTX * libctx,const char * name,const char * properties)420 OSSL_DECODER *OSSL_DECODER_fetch(OSSL_LIB_CTX *libctx, const char *name,
421 const char *properties)
422 {
423 struct decoder_data_st methdata;
424 void *method;
425
426 methdata.libctx = libctx;
427 methdata.tmp_store = NULL;
428 method = inner_ossl_decoder_fetch(&methdata, 0, name, properties);
429 dealloc_tmp_decoder_store(methdata.tmp_store);
430 return method;
431 }
432
ossl_decoder_fetch_by_number(OSSL_LIB_CTX * libctx,int id,const char * properties)433 OSSL_DECODER *ossl_decoder_fetch_by_number(OSSL_LIB_CTX *libctx, int id,
434 const char *properties)
435 {
436 struct decoder_data_st methdata;
437 void *method;
438
439 methdata.libctx = libctx;
440 methdata.tmp_store = NULL;
441 method = inner_ossl_decoder_fetch(&methdata, id, NULL, properties);
442 dealloc_tmp_decoder_store(methdata.tmp_store);
443 return method;
444 }
445
446 /*
447 * Library of basic method functions
448 */
449
OSSL_DECODER_get0_provider(const OSSL_DECODER * decoder)450 const OSSL_PROVIDER *OSSL_DECODER_get0_provider(const OSSL_DECODER *decoder)
451 {
452 if (!ossl_assert(decoder != NULL)) {
453 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER);
454 return 0;
455 }
456
457 return decoder->base.prov;
458 }
459
OSSL_DECODER_get0_properties(const OSSL_DECODER * decoder)460 const char *OSSL_DECODER_get0_properties(const OSSL_DECODER *decoder)
461 {
462 if (!ossl_assert(decoder != NULL)) {
463 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER);
464 return 0;
465 }
466
467 return decoder->base.algodef->property_definition;
468 }
469
470 const OSSL_PROPERTY_LIST *
ossl_decoder_parsed_properties(const OSSL_DECODER * decoder)471 ossl_decoder_parsed_properties(const OSSL_DECODER *decoder)
472 {
473 if (!ossl_assert(decoder != NULL)) {
474 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER);
475 return 0;
476 }
477
478 return decoder->base.parsed_propdef;
479 }
480
ossl_decoder_get_number(const OSSL_DECODER * decoder)481 int ossl_decoder_get_number(const OSSL_DECODER *decoder)
482 {
483 if (!ossl_assert(decoder != NULL)) {
484 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER);
485 return 0;
486 }
487
488 return decoder->base.id;
489 }
490
OSSL_DECODER_get0_name(const OSSL_DECODER * decoder)491 const char *OSSL_DECODER_get0_name(const OSSL_DECODER *decoder)
492 {
493 return decoder->base.name;
494 }
495
OSSL_DECODER_get0_description(const OSSL_DECODER * decoder)496 const char *OSSL_DECODER_get0_description(const OSSL_DECODER *decoder)
497 {
498 return decoder->base.algodef->algorithm_description;
499 }
500
OSSL_DECODER_is_a(const OSSL_DECODER * decoder,const char * name)501 int OSSL_DECODER_is_a(const OSSL_DECODER *decoder, const char *name)
502 {
503 if (decoder->base.prov != NULL) {
504 OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov);
505 OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
506
507 return ossl_namemap_name2num(namemap, name) == decoder->base.id;
508 }
509 return 0;
510 }
511
512 struct do_one_data_st {
513 void (*user_fn)(OSSL_DECODER *decoder, void *arg);
514 void *user_arg;
515 };
516
do_one(ossl_unused int id,void * method,void * arg)517 static void do_one(ossl_unused int id, void *method, void *arg)
518 {
519 struct do_one_data_st *data = arg;
520
521 data->user_fn(method, data->user_arg);
522 }
523
OSSL_DECODER_do_all_provided(OSSL_LIB_CTX * libctx,void (* user_fn)(OSSL_DECODER * decoder,void * arg),void * user_arg)524 void OSSL_DECODER_do_all_provided(OSSL_LIB_CTX *libctx,
525 void (*user_fn)(OSSL_DECODER *decoder,
526 void *arg),
527 void *user_arg)
528 {
529 struct decoder_data_st methdata;
530 struct do_one_data_st data;
531
532 methdata.libctx = libctx;
533 methdata.tmp_store = NULL;
534 (void)inner_ossl_decoder_fetch(&methdata, 0, NULL, NULL /* properties */);
535
536 data.user_fn = user_fn;
537 data.user_arg = user_arg;
538 if (methdata.tmp_store != NULL)
539 ossl_method_store_do_all(methdata.tmp_store, &do_one, &data);
540 ossl_method_store_do_all(get_decoder_store(libctx), &do_one, &data);
541 dealloc_tmp_decoder_store(methdata.tmp_store);
542 }
543
OSSL_DECODER_names_do_all(const OSSL_DECODER * decoder,void (* fn)(const char * name,void * data),void * data)544 int OSSL_DECODER_names_do_all(const OSSL_DECODER *decoder,
545 void (*fn)(const char *name, void *data),
546 void *data)
547 {
548 if (decoder == NULL)
549 return 0;
550
551 if (decoder->base.prov != NULL) {
552 OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov);
553 OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
554
555 return ossl_namemap_doall_names(namemap, decoder->base.id, fn, data);
556 }
557
558 return 1;
559 }
560
561 const OSSL_PARAM *
OSSL_DECODER_gettable_params(OSSL_DECODER * decoder)562 OSSL_DECODER_gettable_params(OSSL_DECODER *decoder)
563 {
564 if (decoder != NULL && decoder->gettable_params != NULL) {
565 void *provctx = ossl_provider_ctx(OSSL_DECODER_get0_provider(decoder));
566
567 return decoder->gettable_params(provctx);
568 }
569 return NULL;
570 }
571
OSSL_DECODER_get_params(OSSL_DECODER * decoder,OSSL_PARAM params[])572 int OSSL_DECODER_get_params(OSSL_DECODER *decoder, OSSL_PARAM params[])
573 {
574 if (decoder != NULL && decoder->get_params != NULL)
575 return decoder->get_params(params);
576 return 0;
577 }
578
579 const OSSL_PARAM *
OSSL_DECODER_settable_ctx_params(OSSL_DECODER * decoder)580 OSSL_DECODER_settable_ctx_params(OSSL_DECODER *decoder)
581 {
582 if (decoder != NULL && decoder->settable_ctx_params != NULL) {
583 void *provctx = ossl_provider_ctx(OSSL_DECODER_get0_provider(decoder));
584
585 return decoder->settable_ctx_params(provctx);
586 }
587 return NULL;
588 }
589
590 /*
591 * Decoder context support
592 */
593
594 /*
595 * |encoder| value NULL is valid, and signifies that there is no decoder.
596 * This is useful to provide fallback mechanisms.
597 * Functions that want to verify if there is a decoder can do so with
598 * OSSL_DECODER_CTX_get_decoder()
599 */
OSSL_DECODER_CTX_new(void)600 OSSL_DECODER_CTX *OSSL_DECODER_CTX_new(void)
601 {
602 OSSL_DECODER_CTX *ctx;
603
604 if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL)
605 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE);
606
607 return ctx;
608 }
609
OSSL_DECODER_CTX_set_params(OSSL_DECODER_CTX * ctx,const OSSL_PARAM params[])610 int OSSL_DECODER_CTX_set_params(OSSL_DECODER_CTX *ctx,
611 const OSSL_PARAM params[])
612 {
613 int ok = 1;
614 size_t i;
615 size_t l;
616
617 if (!ossl_assert(ctx != NULL)) {
618 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER);
619 return 0;
620 }
621
622 if (ctx->decoder_insts == NULL)
623 return 1;
624
625 l = OSSL_DECODER_CTX_get_num_decoders(ctx);
626 for (i = 0; i < l; i++) {
627 OSSL_DECODER_INSTANCE *decoder_inst =
628 sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, i);
629 OSSL_DECODER *decoder =
630 OSSL_DECODER_INSTANCE_get_decoder(decoder_inst);
631 OSSL_DECODER *decoderctx =
632 OSSL_DECODER_INSTANCE_get_decoder_ctx(decoder_inst);
633
634 if (decoderctx == NULL || decoder->set_ctx_params == NULL)
635 continue;
636 if (!decoder->set_ctx_params(decoderctx, params))
637 ok = 0;
638 }
639 return ok;
640 }
641
OSSL_DECODER_CTX_free(OSSL_DECODER_CTX * ctx)642 void OSSL_DECODER_CTX_free(OSSL_DECODER_CTX *ctx)
643 {
644 if (ctx != NULL) {
645 if (ctx->cleanup != NULL)
646 ctx->cleanup(ctx->construct_data);
647 sk_OSSL_DECODER_INSTANCE_pop_free(ctx->decoder_insts,
648 ossl_decoder_instance_free);
649 ossl_pw_clear_passphrase_data(&ctx->pwdata);
650 OPENSSL_free(ctx);
651 }
652 }
653