1 /*
2 * Copyright 2019-2022 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/encoder.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/encoder.h"
19 #include "encoder_local.h"
20
21 /*
22 * Encoder 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_encoder_new(void)27 static OSSL_ENCODER *ossl_encoder_new(void)
28 {
29 OSSL_ENCODER *encoder = NULL;
30
31 if ((encoder = OPENSSL_zalloc(sizeof(*encoder))) == NULL
32 || (encoder->base.lock = CRYPTO_THREAD_lock_new()) == NULL) {
33 OSSL_ENCODER_free(encoder);
34 ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_MALLOC_FAILURE);
35 return NULL;
36 }
37
38 encoder->base.refcnt = 1;
39
40 return encoder;
41 }
42
OSSL_ENCODER_up_ref(OSSL_ENCODER * encoder)43 int OSSL_ENCODER_up_ref(OSSL_ENCODER *encoder)
44 {
45 int ref = 0;
46
47 CRYPTO_UP_REF(&encoder->base.refcnt, &ref, encoder->base.lock);
48 return 1;
49 }
50
OSSL_ENCODER_free(OSSL_ENCODER * encoder)51 void OSSL_ENCODER_free(OSSL_ENCODER *encoder)
52 {
53 int ref = 0;
54
55 if (encoder == NULL)
56 return;
57
58 CRYPTO_DOWN_REF(&encoder->base.refcnt, &ref, encoder->base.lock);
59 if (ref > 0)
60 return;
61 OPENSSL_free(encoder->base.name);
62 ossl_property_free(encoder->base.parsed_propdef);
63 ossl_provider_free(encoder->base.prov);
64 CRYPTO_THREAD_lock_free(encoder->base.lock);
65 OPENSSL_free(encoder);
66 }
67
68 /* Permanent encoder method store, constructor and destructor */
encoder_store_free(void * vstore)69 static void encoder_store_free(void *vstore)
70 {
71 ossl_method_store_free(vstore);
72 }
73
encoder_store_new(OSSL_LIB_CTX * ctx)74 static void *encoder_store_new(OSSL_LIB_CTX *ctx)
75 {
76 return ossl_method_store_new(ctx);
77 }
78
79
80 static const OSSL_LIB_CTX_METHOD encoder_store_method = {
81 /* We want encoder_store to be cleaned up before the provider store */
82 OSSL_LIB_CTX_METHOD_PRIORITY_2,
83 encoder_store_new,
84 encoder_store_free,
85 };
86
87 /* Data to be passed through ossl_method_construct() */
88 struct encoder_data_st {
89 OSSL_LIB_CTX *libctx;
90 int id; /* For get_encoder_from_store() */
91 const char *names; /* For get_encoder_from_store() */
92 const char *propquery; /* For get_encoder_from_store() */
93
94 OSSL_METHOD_STORE *tmp_store; /* For get_tmp_encoder_store() */
95
96 unsigned int flag_construct_error_occurred : 1;
97 };
98
99 /*
100 * Generic routines to fetch / create ENCODER methods with
101 * ossl_method_construct()
102 */
103
104 /* Temporary encoder method store, constructor and destructor */
get_tmp_encoder_store(void * data)105 static void *get_tmp_encoder_store(void *data)
106 {
107 struct encoder_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_encoder_store(void * store)114 static void dealloc_tmp_encoder_store(void *store)
115 {
116 if (store != NULL)
117 ossl_method_store_free(store);
118 }
119
120 /* Get the permanent encoder store */
get_encoder_store(OSSL_LIB_CTX * libctx)121 static OSSL_METHOD_STORE *get_encoder_store(OSSL_LIB_CTX *libctx)
122 {
123 return ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_ENCODER_STORE_INDEX,
124 &encoder_store_method);
125 }
126
127 /* Get encoder methods from a store, or put one in */
get_encoder_from_store(void * store,const OSSL_PROVIDER ** prov,void * data)128 static void *get_encoder_from_store(void *store, const OSSL_PROVIDER **prov,
129 void *data)
130 {
131 struct encoder_data_st *methdata = data;
132 void *method = NULL;
133 int id;
134
135 /*
136 * get_encoder_from_store() is only called to try and get the method
137 * that OSSL_ENCODER_fetch() is asking for, and the name or name id are
138 * passed via methdata.
139 */
140 if ((id = methdata->id) == 0 && methdata->names != NULL) {
141 OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx);
142 const char *names = methdata->names;
143 const char *q = strchr(names, NAME_SEPARATOR);
144 size_t l = (q == NULL ? strlen(names) : (size_t)(q - names));
145
146 if (namemap == 0)
147 return NULL;
148 id = ossl_namemap_name2num_n(namemap, methdata->names, l);
149 }
150
151 if (id == 0)
152 return NULL;
153
154 if (store == NULL
155 && (store = get_encoder_store(methdata->libctx)) == NULL)
156 return NULL;
157
158 if (!ossl_method_store_fetch(store, id, methdata->propquery, prov, &method))
159 return NULL;
160 return method;
161 }
162
put_encoder_in_store(void * store,void * method,const OSSL_PROVIDER * prov,const char * names,const char * propdef,void * data)163 static int put_encoder_in_store(void *store, void *method,
164 const OSSL_PROVIDER *prov,
165 const char *names, const char *propdef,
166 void *data)
167 {
168 struct encoder_data_st *methdata = data;
169 OSSL_NAMEMAP *namemap;
170 int id;
171 size_t l = 0;
172
173 /*
174 * put_encoder_in_store() is only called with an OSSL_ENCODER method that
175 * was successfully created by construct_encoder() below, which means that
176 * all the names should already be stored in the namemap with the same
177 * numeric identity, so just use the first to get that identity.
178 */
179 if (names != NULL) {
180 const char *q = strchr(names, NAME_SEPARATOR);
181
182 l = (q == NULL ? strlen(names) : (size_t)(q - names));
183 }
184
185 if ((namemap = ossl_namemap_stored(methdata->libctx)) == NULL
186 || (id = ossl_namemap_name2num_n(namemap, names, l)) == 0)
187 return 0;
188
189 if (store == NULL && (store = get_encoder_store(methdata->libctx)) == NULL)
190 return 0;
191
192 return ossl_method_store_add(store, prov, id, propdef, method,
193 (int (*)(void *))OSSL_ENCODER_up_ref,
194 (void (*)(void *))OSSL_ENCODER_free);
195 }
196
197 /* Create and populate a encoder method */
encoder_from_algorithm(int id,const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov)198 static void *encoder_from_algorithm(int id, const OSSL_ALGORITHM *algodef,
199 OSSL_PROVIDER *prov)
200 {
201 OSSL_ENCODER *encoder = NULL;
202 const OSSL_DISPATCH *fns = algodef->implementation;
203 OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
204
205 if ((encoder = ossl_encoder_new()) == NULL)
206 return NULL;
207 encoder->base.id = id;
208 if ((encoder->base.name = ossl_algorithm_get1_first_name(algodef)) == NULL) {
209 OSSL_ENCODER_free(encoder);
210 return NULL;
211 }
212 encoder->base.algodef = algodef;
213 encoder->base.parsed_propdef
214 = ossl_parse_property(libctx, algodef->property_definition);
215
216 for (; fns->function_id != 0; fns++) {
217 switch (fns->function_id) {
218 case OSSL_FUNC_ENCODER_NEWCTX:
219 if (encoder->newctx == NULL)
220 encoder->newctx =
221 OSSL_FUNC_encoder_newctx(fns);
222 break;
223 case OSSL_FUNC_ENCODER_FREECTX:
224 if (encoder->freectx == NULL)
225 encoder->freectx =
226 OSSL_FUNC_encoder_freectx(fns);
227 break;
228 case OSSL_FUNC_ENCODER_GET_PARAMS:
229 if (encoder->get_params == NULL)
230 encoder->get_params =
231 OSSL_FUNC_encoder_get_params(fns);
232 break;
233 case OSSL_FUNC_ENCODER_GETTABLE_PARAMS:
234 if (encoder->gettable_params == NULL)
235 encoder->gettable_params =
236 OSSL_FUNC_encoder_gettable_params(fns);
237 break;
238 case OSSL_FUNC_ENCODER_SET_CTX_PARAMS:
239 if (encoder->set_ctx_params == NULL)
240 encoder->set_ctx_params =
241 OSSL_FUNC_encoder_set_ctx_params(fns);
242 break;
243 case OSSL_FUNC_ENCODER_SETTABLE_CTX_PARAMS:
244 if (encoder->settable_ctx_params == NULL)
245 encoder->settable_ctx_params =
246 OSSL_FUNC_encoder_settable_ctx_params(fns);
247 break;
248 case OSSL_FUNC_ENCODER_DOES_SELECTION:
249 if (encoder->does_selection == NULL)
250 encoder->does_selection =
251 OSSL_FUNC_encoder_does_selection(fns);
252 break;
253 case OSSL_FUNC_ENCODER_ENCODE:
254 if (encoder->encode == NULL)
255 encoder->encode = OSSL_FUNC_encoder_encode(fns);
256 break;
257 case OSSL_FUNC_ENCODER_IMPORT_OBJECT:
258 if (encoder->import_object == NULL)
259 encoder->import_object =
260 OSSL_FUNC_encoder_import_object(fns);
261 break;
262 case OSSL_FUNC_ENCODER_FREE_OBJECT:
263 if (encoder->free_object == NULL)
264 encoder->free_object =
265 OSSL_FUNC_encoder_free_object(fns);
266 break;
267 }
268 }
269 /*
270 * Try to check that the method is sensible.
271 * If you have a constructor, you must have a destructor and vice versa.
272 * You must have the encoding driver functions.
273 */
274 if (!((encoder->newctx == NULL && encoder->freectx == NULL)
275 || (encoder->newctx != NULL && encoder->freectx != NULL)
276 || (encoder->import_object != NULL && encoder->free_object != NULL)
277 || (encoder->import_object == NULL && encoder->free_object == NULL))
278 || encoder->encode == NULL) {
279 OSSL_ENCODER_free(encoder);
280 ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_INVALID_PROVIDER_FUNCTIONS);
281 return NULL;
282 }
283
284 if (prov != NULL && !ossl_provider_up_ref(prov)) {
285 OSSL_ENCODER_free(encoder);
286 return NULL;
287 }
288
289 encoder->base.prov = prov;
290 return encoder;
291 }
292
293
294 /*
295 * The core fetching functionality passes the names of the implementation.
296 * This function is responsible to getting an identity number for them,
297 * then call encoder_from_algorithm() with that identity number.
298 */
construct_encoder(const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov,void * data)299 static void *construct_encoder(const OSSL_ALGORITHM *algodef,
300 OSSL_PROVIDER *prov, void *data)
301 {
302 /*
303 * This function is only called if get_encoder_from_store() returned
304 * NULL, so it's safe to say that of all the spots to create a new
305 * namemap entry, this is it. Should the name already exist there, we
306 * know that ossl_namemap_add() will return its corresponding number.
307 */
308 struct encoder_data_st *methdata = data;
309 OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
310 OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
311 const char *names = algodef->algorithm_names;
312 int id = ossl_namemap_add_names(namemap, 0, names, NAME_SEPARATOR);
313 void *method = NULL;
314
315 if (id != 0)
316 method = encoder_from_algorithm(id, algodef, prov);
317
318 /*
319 * Flag to indicate that there was actual construction errors. This
320 * helps inner_evp_generic_fetch() determine what error it should
321 * record on inaccessible algorithms.
322 */
323 if (method == NULL)
324 methdata->flag_construct_error_occurred = 1;
325
326 return method;
327 }
328
329 /* Intermediary function to avoid ugly casts, used below */
destruct_encoder(void * method,void * data)330 static void destruct_encoder(void *method, void *data)
331 {
332 OSSL_ENCODER_free(method);
333 }
334
up_ref_encoder(void * method)335 static int up_ref_encoder(void *method)
336 {
337 return OSSL_ENCODER_up_ref(method);
338 }
339
free_encoder(void * method)340 static void free_encoder(void *method)
341 {
342 OSSL_ENCODER_free(method);
343 }
344
345 /* Fetching support. Can fetch by numeric identity or by name */
346 static OSSL_ENCODER *
inner_ossl_encoder_fetch(struct encoder_data_st * methdata,int id,const char * name,const char * properties)347 inner_ossl_encoder_fetch(struct encoder_data_st *methdata, int id,
348 const char *name, const char *properties)
349 {
350 OSSL_METHOD_STORE *store = get_encoder_store(methdata->libctx);
351 OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx);
352 const char *const propq = properties != NULL ? properties : "";
353 void *method = NULL;
354 int unsupported = 0;
355
356 if (store == NULL || namemap == NULL) {
357 ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_INVALID_ARGUMENT);
358 return NULL;
359 }
360
361 /*
362 * If we have been passed both an id and a name, we have an
363 * internal programming error.
364 */
365 if (!ossl_assert(id == 0 || name == NULL)) {
366 ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_INTERNAL_ERROR);
367 return NULL;
368 }
369
370 if (id == 0)
371 id = ossl_namemap_name2num(namemap, name);
372
373 /*
374 * If we haven't found the name yet, chances are that the algorithm to
375 * be fetched is unsupported.
376 */
377 if (id == 0)
378 unsupported = 1;
379
380 if (id == 0
381 || !ossl_method_store_cache_get(store, NULL, id, propq, &method)) {
382 OSSL_METHOD_CONSTRUCT_METHOD mcm = {
383 get_tmp_encoder_store,
384 get_encoder_from_store,
385 put_encoder_in_store,
386 construct_encoder,
387 destruct_encoder
388 };
389 OSSL_PROVIDER *prov = NULL;
390
391 methdata->id = id;
392 methdata->names = name;
393 methdata->propquery = propq;
394 methdata->flag_construct_error_occurred = 0;
395 if ((method = ossl_method_construct(methdata->libctx, OSSL_OP_ENCODER,
396 &prov, 0 /* !force_cache */,
397 &mcm, methdata)) != NULL) {
398 /*
399 * If construction did create a method for us, we know that
400 * there is a correct name_id and meth_id, since those have
401 * already been calculated in get_encoder_from_store() and
402 * put_encoder_in_store() above.
403 */
404 if (id == 0)
405 id = ossl_namemap_name2num(namemap, name);
406 ossl_method_store_cache_set(store, prov, id, propq, method,
407 up_ref_encoder, free_encoder);
408 }
409
410 /*
411 * If we never were in the constructor, the algorithm to be fetched
412 * is unsupported.
413 */
414 unsupported = !methdata->flag_construct_error_occurred;
415 }
416
417 if ((id != 0 || name != NULL) && method == NULL) {
418 int code = unsupported ? ERR_R_UNSUPPORTED : ERR_R_FETCH_FAILED;
419
420 if (name == NULL)
421 name = ossl_namemap_num2name(namemap, id, 0);
422 ERR_raise_data(ERR_LIB_OSSL_ENCODER, code,
423 "%s, Name (%s : %d), Properties (%s)",
424 ossl_lib_ctx_get_descriptor(methdata->libctx),
425 name = NULL ? "<null>" : name, id,
426 properties == NULL ? "<null>" : properties);
427 }
428
429 return method;
430 }
431
OSSL_ENCODER_fetch(OSSL_LIB_CTX * libctx,const char * name,const char * properties)432 OSSL_ENCODER *OSSL_ENCODER_fetch(OSSL_LIB_CTX *libctx, const char *name,
433 const char *properties)
434 {
435 struct encoder_data_st methdata;
436 void *method;
437
438 methdata.libctx = libctx;
439 methdata.tmp_store = NULL;
440 method = inner_ossl_encoder_fetch(&methdata, 0, name, properties);
441 dealloc_tmp_encoder_store(methdata.tmp_store);
442 return method;
443 }
444
ossl_encoder_fetch_by_number(OSSL_LIB_CTX * libctx,int id,const char * properties)445 OSSL_ENCODER *ossl_encoder_fetch_by_number(OSSL_LIB_CTX *libctx, int id,
446 const char *properties)
447 {
448 struct encoder_data_st methdata;
449 void *method;
450
451 methdata.libctx = libctx;
452 methdata.tmp_store = NULL;
453 method = inner_ossl_encoder_fetch(&methdata, id, NULL, properties);
454 dealloc_tmp_encoder_store(methdata.tmp_store);
455 return method;
456 }
457
458 /*
459 * Library of basic method functions
460 */
461
OSSL_ENCODER_get0_provider(const OSSL_ENCODER * encoder)462 const OSSL_PROVIDER *OSSL_ENCODER_get0_provider(const OSSL_ENCODER *encoder)
463 {
464 if (!ossl_assert(encoder != NULL)) {
465 ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER);
466 return 0;
467 }
468
469 return encoder->base.prov;
470 }
471
OSSL_ENCODER_get0_properties(const OSSL_ENCODER * encoder)472 const char *OSSL_ENCODER_get0_properties(const OSSL_ENCODER *encoder)
473 {
474 if (!ossl_assert(encoder != NULL)) {
475 ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER);
476 return 0;
477 }
478
479 return encoder->base.algodef->property_definition;
480 }
481
482 const OSSL_PROPERTY_LIST *
ossl_encoder_parsed_properties(const OSSL_ENCODER * encoder)483 ossl_encoder_parsed_properties(const OSSL_ENCODER *encoder)
484 {
485 if (!ossl_assert(encoder != NULL)) {
486 ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER);
487 return 0;
488 }
489
490 return encoder->base.parsed_propdef;
491 }
492
ossl_encoder_get_number(const OSSL_ENCODER * encoder)493 int ossl_encoder_get_number(const OSSL_ENCODER *encoder)
494 {
495 if (!ossl_assert(encoder != NULL)) {
496 ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER);
497 return 0;
498 }
499
500 return encoder->base.id;
501 }
502
OSSL_ENCODER_get0_name(const OSSL_ENCODER * encoder)503 const char *OSSL_ENCODER_get0_name(const OSSL_ENCODER *encoder)
504 {
505 return encoder->base.name;
506 }
507
OSSL_ENCODER_get0_description(const OSSL_ENCODER * encoder)508 const char *OSSL_ENCODER_get0_description(const OSSL_ENCODER *encoder)
509 {
510 return encoder->base.algodef->algorithm_description;
511 }
512
OSSL_ENCODER_is_a(const OSSL_ENCODER * encoder,const char * name)513 int OSSL_ENCODER_is_a(const OSSL_ENCODER *encoder, const char *name)
514 {
515 if (encoder->base.prov != NULL) {
516 OSSL_LIB_CTX *libctx = ossl_provider_libctx(encoder->base.prov);
517 OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
518
519 return ossl_namemap_name2num(namemap, name) == encoder->base.id;
520 }
521 return 0;
522 }
523
524 struct do_one_data_st {
525 void (*user_fn)(OSSL_ENCODER *encoder, void *arg);
526 void *user_arg;
527 };
528
do_one(ossl_unused int id,void * method,void * arg)529 static void do_one(ossl_unused int id, void *method, void *arg)
530 {
531 struct do_one_data_st *data = arg;
532
533 data->user_fn(method, data->user_arg);
534 }
535
OSSL_ENCODER_do_all_provided(OSSL_LIB_CTX * libctx,void (* user_fn)(OSSL_ENCODER * encoder,void * arg),void * user_arg)536 void OSSL_ENCODER_do_all_provided(OSSL_LIB_CTX *libctx,
537 void (*user_fn)(OSSL_ENCODER *encoder,
538 void *arg),
539 void *user_arg)
540 {
541 struct encoder_data_st methdata;
542 struct do_one_data_st data;
543
544 methdata.libctx = libctx;
545 methdata.tmp_store = NULL;
546 (void)inner_ossl_encoder_fetch(&methdata, 0, NULL, NULL /* properties */);
547
548 data.user_fn = user_fn;
549 data.user_arg = user_arg;
550 if (methdata.tmp_store != NULL)
551 ossl_method_store_do_all(methdata.tmp_store, &do_one, &data);
552 ossl_method_store_do_all(get_encoder_store(libctx), &do_one, &data);
553 dealloc_tmp_encoder_store(methdata.tmp_store);
554 }
555
OSSL_ENCODER_names_do_all(const OSSL_ENCODER * encoder,void (* fn)(const char * name,void * data),void * data)556 int OSSL_ENCODER_names_do_all(const OSSL_ENCODER *encoder,
557 void (*fn)(const char *name, void *data),
558 void *data)
559 {
560 if (encoder == NULL)
561 return 0;
562
563 if (encoder->base.prov != NULL) {
564 OSSL_LIB_CTX *libctx = ossl_provider_libctx(encoder->base.prov);
565 OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
566
567 return ossl_namemap_doall_names(namemap, encoder->base.id, fn, data);
568 }
569
570 return 1;
571 }
572
573 const OSSL_PARAM *
OSSL_ENCODER_gettable_params(OSSL_ENCODER * encoder)574 OSSL_ENCODER_gettable_params(OSSL_ENCODER *encoder)
575 {
576 if (encoder != NULL && encoder->gettable_params != NULL) {
577 void *provctx = ossl_provider_ctx(OSSL_ENCODER_get0_provider(encoder));
578
579 return encoder->gettable_params(provctx);
580 }
581 return NULL;
582 }
583
OSSL_ENCODER_get_params(OSSL_ENCODER * encoder,OSSL_PARAM params[])584 int OSSL_ENCODER_get_params(OSSL_ENCODER *encoder, OSSL_PARAM params[])
585 {
586 if (encoder != NULL && encoder->get_params != NULL)
587 return encoder->get_params(params);
588 return 0;
589 }
590
OSSL_ENCODER_settable_ctx_params(OSSL_ENCODER * encoder)591 const OSSL_PARAM *OSSL_ENCODER_settable_ctx_params(OSSL_ENCODER *encoder)
592 {
593 if (encoder != NULL && encoder->settable_ctx_params != NULL) {
594 void *provctx = ossl_provider_ctx(OSSL_ENCODER_get0_provider(encoder));
595
596 return encoder->settable_ctx_params(provctx);
597 }
598 return NULL;
599 }
600
601 /*
602 * Encoder context support
603 */
604
OSSL_ENCODER_CTX_new(void)605 OSSL_ENCODER_CTX *OSSL_ENCODER_CTX_new(void)
606 {
607 OSSL_ENCODER_CTX *ctx;
608
609 if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL)
610 ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_MALLOC_FAILURE);
611
612 return ctx;
613 }
614
OSSL_ENCODER_CTX_set_params(OSSL_ENCODER_CTX * ctx,const OSSL_PARAM params[])615 int OSSL_ENCODER_CTX_set_params(OSSL_ENCODER_CTX *ctx,
616 const OSSL_PARAM params[])
617 {
618 int ok = 1;
619 size_t i;
620 size_t l;
621
622 if (!ossl_assert(ctx != NULL)) {
623 ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER);
624 return 0;
625 }
626
627 if (ctx->encoder_insts == NULL)
628 return 1;
629
630 l = OSSL_ENCODER_CTX_get_num_encoders(ctx);
631 for (i = 0; i < l; i++) {
632 OSSL_ENCODER_INSTANCE *encoder_inst =
633 sk_OSSL_ENCODER_INSTANCE_value(ctx->encoder_insts, i);
634 OSSL_ENCODER *encoder = OSSL_ENCODER_INSTANCE_get_encoder(encoder_inst);
635 void *encoderctx = OSSL_ENCODER_INSTANCE_get_encoder_ctx(encoder_inst);
636
637 if (encoderctx == NULL || encoder->set_ctx_params == NULL)
638 continue;
639 if (!encoder->set_ctx_params(encoderctx, params))
640 ok = 0;
641 }
642 return ok;
643 }
644
OSSL_ENCODER_CTX_free(OSSL_ENCODER_CTX * ctx)645 void OSSL_ENCODER_CTX_free(OSSL_ENCODER_CTX *ctx)
646 {
647 if (ctx != NULL) {
648 sk_OSSL_ENCODER_INSTANCE_pop_free(ctx->encoder_insts,
649 ossl_encoder_instance_free);
650 OPENSSL_free(ctx->construct_data);
651 ossl_pw_clear_passphrase_data(&ctx->pwdata);
652 OPENSSL_free(ctx);
653 }
654 }
655