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1 | /* | |
2 | * Copyright 2019-2025 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 | #include "crypto/context.h" | |
21 | ||
22 | /* | |
23 | * Encoder can have multiple names, separated with colons in a name string | |
24 | */ | |
25 | #define NAME_SEPARATOR ':' | |
26 | ||
27 | static void ossl_encoder_free(void *data) | |
28 | { | |
29 | OSSL_ENCODER_free(data); | |
30 | } | |
31 | ||
32 | static int ossl_encoder_up_ref(void *data) | |
33 | { | |
34 | return OSSL_ENCODER_up_ref(data); | |
35 | } | |
36 | ||
37 | /* Simple method structure constructor and destructor */ | |
38 | static OSSL_ENCODER *ossl_encoder_new(void) | |
39 | { | |
40 | OSSL_ENCODER *encoder = NULL; | |
41 | ||
42 | if ((encoder = OPENSSL_zalloc(sizeof(*encoder))) == NULL) | |
43 | return NULL; | |
44 | if (!CRYPTO_NEW_REF(&encoder->base.refcnt, 1)) { | |
45 | OSSL_ENCODER_free(encoder); | |
46 | return NULL; | |
47 | } | |
48 | ||
49 | return encoder; | |
50 | } | |
51 | ||
52 | int OSSL_ENCODER_up_ref(OSSL_ENCODER *encoder) | |
53 | { | |
54 | int ref = 0; | |
55 | ||
56 | CRYPTO_UP_REF(&encoder->base.refcnt, &ref); | |
57 | return 1; | |
58 | } | |
59 | ||
60 | void OSSL_ENCODER_free(OSSL_ENCODER *encoder) | |
61 | { | |
62 | int ref = 0; | |
63 | ||
64 | if (encoder == NULL) | |
65 | return; | |
66 | ||
67 | CRYPTO_DOWN_REF(&encoder->base.refcnt, &ref); | |
68 | if (ref > 0) | |
69 | return; | |
70 | OPENSSL_free(encoder->base.name); | |
71 | ossl_property_free(encoder->base.parsed_propdef); | |
72 | ossl_provider_free(encoder->base.prov); | |
73 | CRYPTO_FREE_REF(&encoder->base.refcnt); | |
74 | OPENSSL_free(encoder); | |
75 | } | |
76 | ||
77 | /* Data to be passed through ossl_method_construct() */ | |
78 | struct encoder_data_st { | |
79 | OSSL_LIB_CTX *libctx; | |
80 | int id; /* For get_encoder_from_store() */ | |
81 | const char *names; /* For get_encoder_from_store() */ | |
82 | const char *propquery; /* For get_encoder_from_store() */ | |
83 | ||
84 | OSSL_METHOD_STORE *tmp_store; /* For get_tmp_encoder_store() */ | |
85 | ||
86 | unsigned int flag_construct_error_occurred : 1; | |
87 | }; | |
88 | ||
89 | /* | |
90 | * Generic routines to fetch / create ENCODER methods with | |
91 | * ossl_method_construct() | |
92 | */ | |
93 | ||
94 | /* Temporary encoder method store, constructor and destructor */ | |
95 | static void *get_tmp_encoder_store(void *data) | |
96 | { | |
97 | struct encoder_data_st *methdata = data; | |
98 | ||
99 | if (methdata->tmp_store == NULL) | |
100 | methdata->tmp_store = ossl_method_store_new(methdata->libctx); | |
101 | return methdata->tmp_store; | |
102 | } | |
103 | ||
104 | static void dealloc_tmp_encoder_store(void *store) | |
105 | { | |
106 | if (store != NULL) | |
107 | ossl_method_store_free(store); | |
108 | } | |
109 | ||
110 | /* Get the permanent encoder store */ | |
111 | static OSSL_METHOD_STORE *get_encoder_store(OSSL_LIB_CTX *libctx) | |
112 | { | |
113 | return ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_ENCODER_STORE_INDEX); | |
114 | } | |
115 | ||
116 | static int reserve_encoder_store(void *store, void *data) | |
117 | { | |
118 | struct encoder_data_st *methdata = data; | |
119 | ||
120 | if (store == NULL | |
121 | && (store = get_encoder_store(methdata->libctx)) == NULL) | |
122 | return 0; | |
123 | ||
124 | return ossl_method_lock_store(store); | |
125 | } | |
126 | ||
127 | static int unreserve_encoder_store(void *store, void *data) | |
128 | { | |
129 | struct encoder_data_st *methdata = data; | |
130 | ||
131 | if (store == NULL | |
132 | && (store = get_encoder_store(methdata->libctx)) == NULL) | |
133 | return 0; | |
134 | ||
135 | return ossl_method_unlock_store(store); | |
136 | } | |
137 | ||
138 | /* Get encoder methods from a store, or put one in */ | |
139 | static void *get_encoder_from_store(void *store, const OSSL_PROVIDER **prov, | |
140 | void *data) | |
141 | { | |
142 | struct encoder_data_st *methdata = data; | |
143 | void *method = NULL; | |
144 | int id; | |
145 | ||
146 | /* | |
147 | * get_encoder_from_store() is only called to try and get the method | |
148 | * that OSSL_ENCODER_fetch() is asking for, and the name or name id are | |
149 | * passed via methdata. | |
150 | */ | |
151 | if ((id = methdata->id) == 0 && methdata->names != NULL) { | |
152 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx); | |
153 | const char *names = methdata->names; | |
154 | const char *q = strchr(names, NAME_SEPARATOR); | |
155 | size_t l = (q == NULL ? strlen(names) : (size_t)(q - names)); | |
156 | ||
157 | if (namemap == 0) | |
158 | return NULL; | |
159 | id = ossl_namemap_name2num_n(namemap, methdata->names, l); | |
160 | } | |
161 | ||
162 | if (id == 0) | |
163 | return NULL; | |
164 | ||
165 | if (store == NULL | |
166 | && (store = get_encoder_store(methdata->libctx)) == NULL) | |
167 | return NULL; | |
168 | ||
169 | if (!ossl_method_store_fetch(store, id, methdata->propquery, prov, &method)) | |
170 | return NULL; | |
171 | return method; | |
172 | } | |
173 | ||
174 | static int put_encoder_in_store(void *store, void *method, | |
175 | const OSSL_PROVIDER *prov, | |
176 | const char *names, const char *propdef, | |
177 | void *data) | |
178 | { | |
179 | struct encoder_data_st *methdata = data; | |
180 | OSSL_NAMEMAP *namemap; | |
181 | int id; | |
182 | size_t l = 0; | |
183 | ||
184 | /* | |
185 | * put_encoder_in_store() is only called with an OSSL_ENCODER method that | |
186 | * was successfully created by construct_encoder() below, which means that | |
187 | * all the names should already be stored in the namemap with the same | |
188 | * numeric identity, so just use the first to get that identity. | |
189 | */ | |
190 | if (names != NULL) { | |
191 | const char *q = strchr(names, NAME_SEPARATOR); | |
192 | ||
193 | l = (q == NULL ? strlen(names) : (size_t)(q - names)); | |
194 | } | |
195 | ||
196 | if ((namemap = ossl_namemap_stored(methdata->libctx)) == NULL | |
197 | || (id = ossl_namemap_name2num_n(namemap, names, l)) == 0) | |
198 | return 0; | |
199 | ||
200 | if (store == NULL && (store = get_encoder_store(methdata->libctx)) == NULL) | |
201 | return 0; | |
202 | ||
203 | return ossl_method_store_add(store, prov, id, propdef, method, | |
204 | ossl_encoder_up_ref, | |
205 | ossl_encoder_free); | |
206 | } | |
207 | ||
208 | /* Create and populate a encoder method */ | |
209 | static void *encoder_from_algorithm(int id, const OSSL_ALGORITHM *algodef, | |
210 | OSSL_PROVIDER *prov) | |
211 | { | |
212 | OSSL_ENCODER *encoder = NULL; | |
213 | const OSSL_DISPATCH *fns = algodef->implementation; | |
214 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov); | |
215 | ||
216 | if ((encoder = ossl_encoder_new()) == NULL) | |
217 | return NULL; | |
218 | encoder->base.id = id; | |
219 | if ((encoder->base.name = ossl_algorithm_get1_first_name(algodef)) == NULL) { | |
220 | OSSL_ENCODER_free(encoder); | |
221 | return NULL; | |
222 | } | |
223 | encoder->base.algodef = algodef; | |
224 | if ((encoder->base.parsed_propdef | |
225 | = ossl_parse_property(libctx, algodef->property_definition)) == NULL) { | |
226 | OSSL_ENCODER_free(encoder); | |
227 | return NULL; | |
228 | } | |
229 | ||
230 | for (; fns->function_id != 0; fns++) { | |
231 | switch (fns->function_id) { | |
232 | case OSSL_FUNC_ENCODER_NEWCTX: | |
233 | if (encoder->newctx == NULL) | |
234 | encoder->newctx = | |
235 | OSSL_FUNC_encoder_newctx(fns); | |
236 | break; | |
237 | case OSSL_FUNC_ENCODER_FREECTX: | |
238 | if (encoder->freectx == NULL) | |
239 | encoder->freectx = | |
240 | OSSL_FUNC_encoder_freectx(fns); | |
241 | break; | |
242 | case OSSL_FUNC_ENCODER_GET_PARAMS: | |
243 | if (encoder->get_params == NULL) | |
244 | encoder->get_params = | |
245 | OSSL_FUNC_encoder_get_params(fns); | |
246 | break; | |
247 | case OSSL_FUNC_ENCODER_GETTABLE_PARAMS: | |
248 | if (encoder->gettable_params == NULL) | |
249 | encoder->gettable_params = | |
250 | OSSL_FUNC_encoder_gettable_params(fns); | |
251 | break; | |
252 | case OSSL_FUNC_ENCODER_SET_CTX_PARAMS: | |
253 | if (encoder->set_ctx_params == NULL) | |
254 | encoder->set_ctx_params = | |
255 | OSSL_FUNC_encoder_set_ctx_params(fns); | |
256 | break; | |
257 | case OSSL_FUNC_ENCODER_SETTABLE_CTX_PARAMS: | |
258 | if (encoder->settable_ctx_params == NULL) | |
259 | encoder->settable_ctx_params = | |
260 | OSSL_FUNC_encoder_settable_ctx_params(fns); | |
261 | break; | |
262 | case OSSL_FUNC_ENCODER_DOES_SELECTION: | |
263 | if (encoder->does_selection == NULL) | |
264 | encoder->does_selection = | |
265 | OSSL_FUNC_encoder_does_selection(fns); | |
266 | break; | |
267 | case OSSL_FUNC_ENCODER_ENCODE: | |
268 | if (encoder->encode == NULL) | |
269 | encoder->encode = OSSL_FUNC_encoder_encode(fns); | |
270 | break; | |
271 | case OSSL_FUNC_ENCODER_IMPORT_OBJECT: | |
272 | if (encoder->import_object == NULL) | |
273 | encoder->import_object = | |
274 | OSSL_FUNC_encoder_import_object(fns); | |
275 | break; | |
276 | case OSSL_FUNC_ENCODER_FREE_OBJECT: | |
277 | if (encoder->free_object == NULL) | |
278 | encoder->free_object = | |
279 | OSSL_FUNC_encoder_free_object(fns); | |
280 | break; | |
281 | } | |
282 | } | |
283 | /* | |
284 | * Try to check that the method is sensible. | |
285 | * If you have a constructor, you must have a destructor and vice versa. | |
286 | * You must have the encoding driver functions. | |
287 | */ | |
288 | if (!((encoder->newctx == NULL && encoder->freectx == NULL) | |
289 | || (encoder->newctx != NULL && encoder->freectx != NULL) | |
290 | || (encoder->import_object != NULL && encoder->free_object != NULL) | |
291 | || (encoder->import_object == NULL && encoder->free_object == NULL)) | |
292 | || encoder->encode == NULL) { | |
293 | OSSL_ENCODER_free(encoder); | |
294 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_INVALID_PROVIDER_FUNCTIONS); | |
295 | return NULL; | |
296 | } | |
297 | ||
298 | if (prov != NULL && !ossl_provider_up_ref(prov)) { | |
299 | OSSL_ENCODER_free(encoder); | |
300 | return NULL; | |
301 | } | |
302 | ||
303 | encoder->base.prov = prov; | |
304 | return encoder; | |
305 | } | |
306 | ||
307 | ||
308 | /* | |
309 | * The core fetching functionality passes the names of the implementation. | |
310 | * This function is responsible to getting an identity number for them, | |
311 | * then call encoder_from_algorithm() with that identity number. | |
312 | */ | |
313 | static void *construct_encoder(const OSSL_ALGORITHM *algodef, | |
314 | OSSL_PROVIDER *prov, void *data) | |
315 | { | |
316 | /* | |
317 | * This function is only called if get_encoder_from_store() returned | |
318 | * NULL, so it's safe to say that of all the spots to create a new | |
319 | * namemap entry, this is it. Should the name already exist there, we | |
320 | * know that ossl_namemap_add() will return its corresponding number. | |
321 | */ | |
322 | struct encoder_data_st *methdata = data; | |
323 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov); | |
324 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); | |
325 | const char *names = algodef->algorithm_names; | |
326 | int id = ossl_namemap_add_names(namemap, 0, names, NAME_SEPARATOR); | |
327 | void *method = NULL; | |
328 | ||
329 | if (id != 0) | |
330 | method = encoder_from_algorithm(id, algodef, prov); | |
331 | ||
332 | /* | |
333 | * Flag to indicate that there was actual construction errors. This | |
334 | * helps inner_evp_generic_fetch() determine what error it should | |
335 | * record on inaccessible algorithms. | |
336 | */ | |
337 | if (method == NULL) | |
338 | methdata->flag_construct_error_occurred = 1; | |
339 | ||
340 | return method; | |
341 | } | |
342 | ||
343 | /* Intermediary function to avoid ugly casts, used below */ | |
344 | static void destruct_encoder(void *method, void *data) | |
345 | { | |
346 | OSSL_ENCODER_free(method); | |
347 | } | |
348 | ||
349 | static int up_ref_encoder(void *method) | |
350 | { | |
351 | return OSSL_ENCODER_up_ref(method); | |
352 | } | |
353 | ||
354 | static void free_encoder(void *method) | |
355 | { | |
356 | OSSL_ENCODER_free(method); | |
357 | } | |
358 | ||
359 | /* Fetching support. Can fetch by numeric identity or by name */ | |
360 | static OSSL_ENCODER * | |
361 | inner_ossl_encoder_fetch(struct encoder_data_st *methdata, | |
362 | const char *name, const char *properties) | |
363 | { | |
364 | OSSL_METHOD_STORE *store = get_encoder_store(methdata->libctx); | |
365 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx); | |
366 | const char *const propq = properties != NULL ? properties : ""; | |
367 | void *method = NULL; | |
368 | int unsupported, id; | |
369 | ||
370 | if (store == NULL || namemap == NULL) { | |
371 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_INVALID_ARGUMENT); | |
372 | return NULL; | |
373 | } | |
374 | ||
375 | id = name != NULL ? ossl_namemap_name2num(namemap, name) : 0; | |
376 | ||
377 | /* | |
378 | * If we haven't found the name yet, chances are that the algorithm to | |
379 | * be fetched is unsupported. | |
380 | */ | |
381 | unsupported = id == 0; | |
382 | ||
383 | if (id == 0 | |
384 | || !ossl_method_store_cache_get(store, NULL, id, propq, &method)) { | |
385 | OSSL_METHOD_CONSTRUCT_METHOD mcm = { | |
386 | get_tmp_encoder_store, | |
387 | reserve_encoder_store, | |
388 | unreserve_encoder_store, | |
389 | get_encoder_from_store, | |
390 | put_encoder_in_store, | |
391 | construct_encoder, | |
392 | destruct_encoder | |
393 | }; | |
394 | OSSL_PROVIDER *prov = NULL; | |
395 | ||
396 | methdata->id = id; | |
397 | methdata->names = name; | |
398 | methdata->propquery = propq; | |
399 | methdata->flag_construct_error_occurred = 0; | |
400 | if ((method = ossl_method_construct(methdata->libctx, OSSL_OP_ENCODER, | |
401 | &prov, 0 /* !force_cache */, | |
402 | &mcm, methdata)) != NULL) { | |
403 | /* | |
404 | * If construction did create a method for us, we know that | |
405 | * there is a correct name_id and meth_id, since those have | |
406 | * already been calculated in get_encoder_from_store() and | |
407 | * put_encoder_in_store() above. | |
408 | */ | |
409 | if (id == 0) | |
410 | id = ossl_namemap_name2num(namemap, name); | |
411 | ossl_method_store_cache_set(store, prov, id, propq, method, | |
412 | up_ref_encoder, free_encoder); | |
413 | } | |
414 | ||
415 | /* | |
416 | * If we never were in the constructor, the algorithm to be fetched | |
417 | * is unsupported. | |
418 | */ | |
419 | unsupported = !methdata->flag_construct_error_occurred; | |
420 | } | |
421 | ||
422 | if ((id != 0 || name != NULL) && method == NULL) { | |
423 | int code = unsupported ? ERR_R_UNSUPPORTED : ERR_R_FETCH_FAILED; | |
424 | ||
425 | if (name == NULL) | |
426 | name = ossl_namemap_num2name(namemap, id, 0); | |
427 | ERR_raise_data(ERR_LIB_OSSL_ENCODER, code, | |
428 | "%s, Name (%s : %d), Properties (%s)", | |
429 | ossl_lib_ctx_get_descriptor(methdata->libctx), | |
430 | name == NULL ? "<null>" : name, id, | |
431 | properties == NULL ? "<null>" : properties); | |
432 | } | |
433 | ||
434 | return method; | |
435 | } | |
436 | ||
437 | OSSL_ENCODER *OSSL_ENCODER_fetch(OSSL_LIB_CTX *libctx, const char *name, | |
438 | const char *properties) | |
439 | { | |
440 | struct encoder_data_st methdata; | |
441 | void *method; | |
442 | ||
443 | methdata.libctx = libctx; | |
444 | methdata.tmp_store = NULL; | |
445 | method = inner_ossl_encoder_fetch(&methdata, name, properties); | |
446 | dealloc_tmp_encoder_store(methdata.tmp_store); | |
447 | return method; | |
448 | } | |
449 | ||
450 | int ossl_encoder_store_cache_flush(OSSL_LIB_CTX *libctx) | |
451 | { | |
452 | OSSL_METHOD_STORE *store = get_encoder_store(libctx); | |
453 | ||
454 | if (store != NULL) | |
455 | return ossl_method_store_cache_flush_all(store); | |
456 | return 1; | |
457 | } | |
458 | ||
459 | int ossl_encoder_store_remove_all_provided(const OSSL_PROVIDER *prov) | |
460 | { | |
461 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov); | |
462 | OSSL_METHOD_STORE *store = get_encoder_store(libctx); | |
463 | ||
464 | if (store != NULL) | |
465 | return ossl_method_store_remove_all_provided(store, prov); | |
466 | return 1; | |
467 | } | |
468 | ||
469 | /* | |
470 | * Library of basic method functions | |
471 | */ | |
472 | ||
473 | const OSSL_PROVIDER *OSSL_ENCODER_get0_provider(const OSSL_ENCODER *encoder) | |
474 | { | |
475 | if (!ossl_assert(encoder != NULL)) { | |
476 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER); | |
477 | return 0; | |
478 | } | |
479 | ||
480 | return encoder->base.prov; | |
481 | } | |
482 | ||
483 | const char *OSSL_ENCODER_get0_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.algodef->property_definition; | |
491 | } | |
492 | ||
493 | const OSSL_PROPERTY_LIST * | |
494 | ossl_encoder_parsed_properties(const OSSL_ENCODER *encoder) | |
495 | { | |
496 | if (!ossl_assert(encoder != NULL)) { | |
497 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER); | |
498 | return 0; | |
499 | } | |
500 | ||
501 | return encoder->base.parsed_propdef; | |
502 | } | |
503 | ||
504 | int ossl_encoder_get_number(const OSSL_ENCODER *encoder) | |
505 | { | |
506 | if (!ossl_assert(encoder != NULL)) { | |
507 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER); | |
508 | return 0; | |
509 | } | |
510 | ||
511 | return encoder->base.id; | |
512 | } | |
513 | ||
514 | const char *OSSL_ENCODER_get0_name(const OSSL_ENCODER *encoder) | |
515 | { | |
516 | return encoder->base.name; | |
517 | } | |
518 | ||
519 | const char *OSSL_ENCODER_get0_description(const OSSL_ENCODER *encoder) | |
520 | { | |
521 | return encoder->base.algodef->algorithm_description; | |
522 | } | |
523 | ||
524 | int OSSL_ENCODER_is_a(const OSSL_ENCODER *encoder, const char *name) | |
525 | { | |
526 | if (encoder->base.prov != NULL) { | |
527 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(encoder->base.prov); | |
528 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); | |
529 | ||
530 | return ossl_namemap_name2num(namemap, name) == encoder->base.id; | |
531 | } | |
532 | return 0; | |
533 | } | |
534 | ||
535 | struct do_one_data_st { | |
536 | void (*user_fn)(OSSL_ENCODER *encoder, void *arg); | |
537 | void *user_arg; | |
538 | }; | |
539 | ||
540 | static void do_one(ossl_unused int id, void *method, void *arg) | |
541 | { | |
542 | struct do_one_data_st *data = arg; | |
543 | ||
544 | data->user_fn(method, data->user_arg); | |
545 | } | |
546 | ||
547 | void OSSL_ENCODER_do_all_provided(OSSL_LIB_CTX *libctx, | |
548 | void (*user_fn)(OSSL_ENCODER *encoder, | |
549 | void *arg), | |
550 | void *user_arg) | |
551 | { | |
552 | struct encoder_data_st methdata; | |
553 | struct do_one_data_st data; | |
554 | ||
555 | methdata.libctx = libctx; | |
556 | methdata.tmp_store = NULL; | |
557 | (void)inner_ossl_encoder_fetch(&methdata, NULL, NULL /* properties */); | |
558 | ||
559 | data.user_fn = user_fn; | |
560 | data.user_arg = user_arg; | |
561 | if (methdata.tmp_store != NULL) | |
562 | ossl_method_store_do_all(methdata.tmp_store, &do_one, &data); | |
563 | ossl_method_store_do_all(get_encoder_store(libctx), &do_one, &data); | |
564 | dealloc_tmp_encoder_store(methdata.tmp_store); | |
565 | } | |
566 | ||
567 | int OSSL_ENCODER_names_do_all(const OSSL_ENCODER *encoder, | |
568 | void (*fn)(const char *name, void *data), | |
569 | void *data) | |
570 | { | |
571 | if (encoder == NULL) | |
572 | return 0; | |
573 | ||
574 | if (encoder->base.prov != NULL) { | |
575 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(encoder->base.prov); | |
576 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); | |
577 | ||
578 | return ossl_namemap_doall_names(namemap, encoder->base.id, fn, data); | |
579 | } | |
580 | ||
581 | return 1; | |
582 | } | |
583 | ||
584 | const OSSL_PARAM * | |
585 | OSSL_ENCODER_gettable_params(OSSL_ENCODER *encoder) | |
586 | { | |
587 | if (encoder != NULL && encoder->gettable_params != NULL) { | |
588 | void *provctx = ossl_provider_ctx(OSSL_ENCODER_get0_provider(encoder)); | |
589 | ||
590 | return encoder->gettable_params(provctx); | |
591 | } | |
592 | return NULL; | |
593 | } | |
594 | ||
595 | int OSSL_ENCODER_get_params(OSSL_ENCODER *encoder, OSSL_PARAM params[]) | |
596 | { | |
597 | if (encoder != NULL && encoder->get_params != NULL) | |
598 | return encoder->get_params(params); | |
599 | return 0; | |
600 | } | |
601 | ||
602 | const OSSL_PARAM *OSSL_ENCODER_settable_ctx_params(OSSL_ENCODER *encoder) | |
603 | { | |
604 | if (encoder != NULL && encoder->settable_ctx_params != NULL) { | |
605 | void *provctx = ossl_provider_ctx(OSSL_ENCODER_get0_provider(encoder)); | |
606 | ||
607 | return encoder->settable_ctx_params(provctx); | |
608 | } | |
609 | return NULL; | |
610 | } | |
611 | ||
612 | /* | |
613 | * Encoder context support | |
614 | */ | |
615 | ||
616 | OSSL_ENCODER_CTX *OSSL_ENCODER_CTX_new(void) | |
617 | { | |
618 | OSSL_ENCODER_CTX *ctx; | |
619 | ||
620 | ctx = OPENSSL_zalloc(sizeof(*ctx)); | |
621 | return ctx; | |
622 | } | |
623 | ||
624 | int OSSL_ENCODER_CTX_set_params(OSSL_ENCODER_CTX *ctx, | |
625 | const OSSL_PARAM params[]) | |
626 | { | |
627 | int ok = 1; | |
628 | int i; | |
629 | int l; | |
630 | ||
631 | if (!ossl_assert(ctx != NULL)) { | |
632 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER); | |
633 | return 0; | |
634 | } | |
635 | ||
636 | if (ctx->encoder_insts == NULL) | |
637 | return 1; | |
638 | ||
639 | l = OSSL_ENCODER_CTX_get_num_encoders(ctx); | |
640 | for (i = 0; i < l; i++) { | |
641 | OSSL_ENCODER_INSTANCE *encoder_inst = | |
642 | sk_OSSL_ENCODER_INSTANCE_value(ctx->encoder_insts, i); | |
643 | OSSL_ENCODER *encoder = OSSL_ENCODER_INSTANCE_get_encoder(encoder_inst); | |
644 | void *encoderctx = OSSL_ENCODER_INSTANCE_get_encoder_ctx(encoder_inst); | |
645 | ||
646 | if (encoderctx == NULL || encoder->set_ctx_params == NULL) | |
647 | continue; | |
648 | if (!encoder->set_ctx_params(encoderctx, params)) | |
649 | ok = 0; | |
650 | } | |
651 | return ok; | |
652 | } | |
653 | ||
654 | void OSSL_ENCODER_CTX_free(OSSL_ENCODER_CTX *ctx) | |
655 | { | |
656 | if (ctx != NULL) { | |
657 | sk_OSSL_ENCODER_INSTANCE_pop_free(ctx->encoder_insts, | |
658 | ossl_encoder_instance_free); | |
659 | OPENSSL_free(ctx->construct_data); | |
660 | ossl_pw_clear_passphrase_data(&ctx->pwdata); | |
661 | OPENSSL_free(ctx); | |
662 | } | |
663 | } |