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ece9304c RL |
1 | /* |
2 | * Copyright 2019-2020 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 */ | |
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 | ||
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 | ||
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 | ossl_provider_free(encoder->base.prov); | |
62 | CRYPTO_THREAD_lock_free(encoder->base.lock); | |
63 | OPENSSL_free(encoder); | |
64 | } | |
65 | ||
66 | /* Permanent encoder method store, constructor and destructor */ | |
67 | static void encoder_store_free(void *vstore) | |
68 | { | |
69 | ossl_method_store_free(vstore); | |
70 | } | |
71 | ||
b4250010 | 72 | static void *encoder_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 encoder_store_method = { |
ece9304c RL |
79 | encoder_store_new, |
80 | encoder_store_free, | |
81 | }; | |
82 | ||
83 | /* Data to be passed through ossl_method_construct() */ | |
84 | struct encoder_data_st { | |
b4250010 | 85 | OSSL_LIB_CTX *libctx; |
ece9304c RL |
86 | OSSL_METHOD_CONSTRUCT_METHOD *mcm; |
87 | int id; /* For get_encoder_from_store() */ | |
88 | const char *names; /* For get_encoder_from_store() */ | |
89 | const char *propquery; /* For get_encoder_from_store() */ | |
d6d42cda RL |
90 | |
91 | unsigned int flag_construct_error_occured : 1; | |
ece9304c RL |
92 | }; |
93 | ||
94 | /* | |
95 | * Generic routines to fetch / create ENCODER methods with | |
96 | * ossl_method_construct() | |
97 | */ | |
98 | ||
99 | /* Temporary encoder method store, constructor and destructor */ | |
b4250010 | 100 | static void *alloc_tmp_encoder_store(OSSL_LIB_CTX *ctx) |
ece9304c RL |
101 | { |
102 | return ossl_method_store_new(ctx); | |
103 | } | |
104 | ||
105 | static void dealloc_tmp_encoder_store(void *store) | |
106 | { | |
107 | if (store != NULL) | |
108 | ossl_method_store_free(store); | |
109 | } | |
110 | ||
111 | /* Get the permanent encoder store */ | |
b4250010 | 112 | static OSSL_METHOD_STORE *get_encoder_store(OSSL_LIB_CTX *libctx) |
ece9304c | 113 | { |
b4250010 DMSP |
114 | return ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_ENCODER_STORE_INDEX, |
115 | &encoder_store_method); | |
ece9304c RL |
116 | } |
117 | ||
118 | /* Get encoder methods from a store, or put one in */ | |
b4250010 | 119 | static void *get_encoder_from_store(OSSL_LIB_CTX *libctx, void *store, |
ece9304c RL |
120 | void *data) |
121 | { | |
122 | struct encoder_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_encoder_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_encoder_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_encoder_store(libctx)) == NULL) | |
154 | return 0; | |
155 | ||
156 | return ossl_method_store_add(store, prov, id, propdef, method, | |
157 | (int (*)(void *))OSSL_ENCODER_up_ref, | |
158 | (void (*)(void *))OSSL_ENCODER_free); | |
159 | } | |
160 | ||
161 | /* Create and populate a encoder method */ | |
162 | static void *encoder_from_dispatch(int id, const OSSL_ALGORITHM *algodef, | |
163 | OSSL_PROVIDER *prov) | |
164 | { | |
165 | OSSL_ENCODER *encoder = NULL; | |
166 | const OSSL_DISPATCH *fns = algodef->implementation; | |
167 | ||
168 | if ((encoder = ossl_encoder_new()) == NULL) | |
169 | return NULL; | |
170 | encoder->base.id = id; | |
171 | encoder->base.propdef = algodef->property_definition; | |
172 | ||
173 | for (; fns->function_id != 0; fns++) { | |
174 | switch (fns->function_id) { | |
175 | case OSSL_FUNC_ENCODER_NEWCTX: | |
176 | if (encoder->newctx == NULL) | |
177 | encoder->newctx = | |
178 | OSSL_FUNC_encoder_newctx(fns); | |
179 | break; | |
180 | case OSSL_FUNC_ENCODER_FREECTX: | |
181 | if (encoder->freectx == NULL) | |
182 | encoder->freectx = | |
183 | OSSL_FUNC_encoder_freectx(fns); | |
184 | break; | |
b8975c68 RL |
185 | case OSSL_FUNC_ENCODER_GET_PARAMS: |
186 | if (encoder->get_params == NULL) | |
187 | encoder->get_params = | |
188 | OSSL_FUNC_encoder_get_params(fns); | |
189 | break; | |
190 | case OSSL_FUNC_ENCODER_GETTABLE_PARAMS: | |
191 | if (encoder->gettable_params == NULL) | |
192 | encoder->gettable_params = | |
193 | OSSL_FUNC_encoder_gettable_params(fns); | |
194 | break; | |
ece9304c RL |
195 | case OSSL_FUNC_ENCODER_SET_CTX_PARAMS: |
196 | if (encoder->set_ctx_params == NULL) | |
197 | encoder->set_ctx_params = | |
198 | OSSL_FUNC_encoder_set_ctx_params(fns); | |
199 | break; | |
200 | case OSSL_FUNC_ENCODER_SETTABLE_CTX_PARAMS: | |
201 | if (encoder->settable_ctx_params == NULL) | |
202 | encoder->settable_ctx_params = | |
203 | OSSL_FUNC_encoder_settable_ctx_params(fns); | |
204 | break; | |
cd861ab7 RL |
205 | case OSSL_FUNC_ENCODER_DOES_SELECTION: |
206 | if (encoder->does_selection == NULL) | |
207 | encoder->does_selection = | |
208 | OSSL_FUNC_encoder_does_selection(fns); | |
209 | break; | |
b8975c68 RL |
210 | case OSSL_FUNC_ENCODER_ENCODE: |
211 | if (encoder->encode == NULL) | |
212 | encoder->encode = OSSL_FUNC_encoder_encode(fns); | |
213 | break; | |
214 | case OSSL_FUNC_ENCODER_IMPORT_OBJECT: | |
215 | if (encoder->import_object == NULL) | |
216 | encoder->import_object = | |
217 | OSSL_FUNC_encoder_import_object(fns); | |
ece9304c | 218 | break; |
b8975c68 RL |
219 | case OSSL_FUNC_ENCODER_FREE_OBJECT: |
220 | if (encoder->free_object == NULL) | |
221 | encoder->free_object = | |
222 | OSSL_FUNC_encoder_free_object(fns); | |
ece9304c RL |
223 | break; |
224 | } | |
225 | } | |
226 | /* | |
227 | * Try to check that the method is sensible. | |
228 | * If you have a constructor, you must have a destructor and vice versa. | |
b8975c68 | 229 | * You must have the encoding driver functions. |
ece9304c RL |
230 | */ |
231 | if (!((encoder->newctx == NULL && encoder->freectx == NULL) | |
b8975c68 RL |
232 | || (encoder->newctx != NULL && encoder->freectx != NULL) |
233 | || (encoder->import_object != NULL && encoder->free_object != NULL) | |
234 | || (encoder->import_object == NULL && encoder->free_object == NULL)) | |
235 | || encoder->encode == NULL | |
236 | || encoder->gettable_params == NULL | |
237 | || encoder->get_params == NULL) { | |
ece9304c RL |
238 | OSSL_ENCODER_free(encoder); |
239 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_INVALID_PROVIDER_FUNCTIONS); | |
240 | return NULL; | |
241 | } | |
242 | ||
243 | if (prov != NULL && !ossl_provider_up_ref(prov)) { | |
244 | OSSL_ENCODER_free(encoder); | |
245 | return NULL; | |
246 | } | |
247 | ||
248 | encoder->base.prov = prov; | |
249 | return encoder; | |
250 | } | |
251 | ||
252 | ||
253 | /* | |
254 | * The core fetching functionality passes the names of the implementation. | |
255 | * This function is responsible to getting an identity number for them, | |
256 | * then call encoder_from_dispatch() with that identity number. | |
257 | */ | |
258 | static void *construct_encoder(const OSSL_ALGORITHM *algodef, | |
d6d42cda | 259 | OSSL_PROVIDER *prov, void *data) |
ece9304c RL |
260 | { |
261 | /* | |
262 | * This function is only called if get_encoder_from_store() returned | |
263 | * NULL, so it's safe to say that of all the spots to create a new | |
264 | * namemap entry, this is it. Should the name already exist there, we | |
265 | * know that ossl_namemap_add() will return its corresponding number. | |
266 | */ | |
d6d42cda | 267 | struct encoder_data_st *methdata = data; |
a829b735 | 268 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov); |
ece9304c RL |
269 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
270 | const char *names = algodef->algorithm_names; | |
271 | int id = ossl_namemap_add_names(namemap, 0, names, NAME_SEPARATOR); | |
272 | void *method = NULL; | |
273 | ||
274 | if (id != 0) | |
275 | method = encoder_from_dispatch(id, algodef, prov); | |
276 | ||
d6d42cda RL |
277 | /* |
278 | * Flag to indicate that there was actual construction errors. This | |
279 | * helps inner_evp_generic_fetch() determine what error it should | |
280 | * record on inaccessible algorithms. | |
281 | */ | |
282 | if (method == NULL) | |
283 | methdata->flag_construct_error_occured = 1; | |
284 | ||
ece9304c RL |
285 | return method; |
286 | } | |
287 | ||
288 | /* Intermediary function to avoid ugly casts, used below */ | |
289 | static void destruct_encoder(void *method, void *data) | |
290 | { | |
291 | OSSL_ENCODER_free(method); | |
292 | } | |
293 | ||
294 | static int up_ref_encoder(void *method) | |
295 | { | |
296 | return OSSL_ENCODER_up_ref(method); | |
297 | } | |
298 | ||
299 | static void free_encoder(void *method) | |
300 | { | |
301 | OSSL_ENCODER_free(method); | |
302 | } | |
303 | ||
304 | /* Fetching support. Can fetch by numeric identity or by name */ | |
b4250010 | 305 | static OSSL_ENCODER *inner_ossl_encoder_fetch(OSSL_LIB_CTX *libctx, |
ece9304c RL |
306 | int id, const char *name, |
307 | const char *properties) | |
308 | { | |
309 | OSSL_METHOD_STORE *store = get_encoder_store(libctx); | |
310 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); | |
311 | void *method = NULL; | |
d6d42cda | 312 | int unsupported = 0; |
ece9304c | 313 | |
d6d42cda RL |
314 | if (store == NULL || namemap == NULL) { |
315 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_INVALID_ARGUMENT); | |
ece9304c | 316 | return NULL; |
d6d42cda | 317 | } |
ece9304c RL |
318 | |
319 | /* | |
320 | * If we have been passed neither a name_id or a name, we have an | |
321 | * internal programming error. | |
322 | */ | |
d6d42cda RL |
323 | if (!ossl_assert(id != 0 || name != NULL)) { |
324 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_INTERNAL_ERROR); | |
ece9304c | 325 | return NULL; |
d6d42cda | 326 | } |
ece9304c RL |
327 | |
328 | if (id == 0) | |
329 | id = ossl_namemap_name2num(namemap, name); | |
330 | ||
d6d42cda RL |
331 | /* |
332 | * If we haven't found the name yet, chances are that the algorithm to | |
333 | * be fetched is unsupported. | |
334 | */ | |
335 | if (id == 0) | |
336 | unsupported = 1; | |
337 | ||
ece9304c RL |
338 | if (id == 0 |
339 | || !ossl_method_store_cache_get(store, id, properties, &method)) { | |
340 | OSSL_METHOD_CONSTRUCT_METHOD mcm = { | |
341 | alloc_tmp_encoder_store, | |
342 | dealloc_tmp_encoder_store, | |
343 | get_encoder_from_store, | |
344 | put_encoder_in_store, | |
345 | construct_encoder, | |
346 | destruct_encoder | |
347 | }; | |
348 | struct encoder_data_st mcmdata; | |
349 | ||
350 | mcmdata.libctx = libctx; | |
351 | mcmdata.mcm = &mcm; | |
352 | mcmdata.id = id; | |
353 | mcmdata.names = name; | |
354 | mcmdata.propquery = properties; | |
d6d42cda | 355 | mcmdata.flag_construct_error_occured = 0; |
ece9304c RL |
356 | if ((method = ossl_method_construct(libctx, OSSL_OP_ENCODER, |
357 | 0 /* !force_cache */, | |
358 | &mcm, &mcmdata)) != NULL) { | |
359 | /* | |
360 | * If construction did create a method for us, we know that | |
361 | * there is a correct name_id and meth_id, since those have | |
362 | * already been calculated in get_encoder_from_store() and | |
363 | * put_encoder_in_store() above. | |
364 | */ | |
365 | if (id == 0) | |
366 | id = ossl_namemap_name2num(namemap, name); | |
367 | ossl_method_store_cache_set(store, id, properties, method, | |
368 | up_ref_encoder, free_encoder); | |
369 | } | |
d6d42cda RL |
370 | |
371 | /* | |
372 | * If we never were in the constructor, the algorithm to be fetched | |
373 | * is unsupported. | |
374 | */ | |
375 | unsupported = !mcmdata.flag_construct_error_occured; | |
376 | } | |
377 | ||
378 | if (method == NULL) { | |
379 | int code = unsupported ? ERR_R_UNSUPPORTED : ERR_R_FETCH_FAILED; | |
380 | ||
381 | if (name == NULL) | |
382 | name = ossl_namemap_num2name(namemap, id, 0); | |
383 | ERR_raise_data(ERR_LIB_OSSL_ENCODER, code, | |
384 | "%s, Name (%s : %d), Properties (%s)", | |
385 | ossl_lib_ctx_get_descriptor(libctx), | |
386 | name = NULL ? "<null>" : name, id, | |
387 | properties == NULL ? "<null>" : properties); | |
ece9304c RL |
388 | } |
389 | ||
390 | return method; | |
391 | } | |
392 | ||
b4250010 | 393 | OSSL_ENCODER *OSSL_ENCODER_fetch(OSSL_LIB_CTX *libctx, const char *name, |
ece9304c RL |
394 | const char *properties) |
395 | { | |
396 | return inner_ossl_encoder_fetch(libctx, 0, name, properties); | |
397 | } | |
398 | ||
b4250010 | 399 | OSSL_ENCODER *ossl_encoder_fetch_by_number(OSSL_LIB_CTX *libctx, int id, |
ece9304c RL |
400 | const char *properties) |
401 | { | |
402 | return inner_ossl_encoder_fetch(libctx, id, NULL, properties); | |
403 | } | |
404 | ||
405 | /* | |
406 | * Library of basic method functions | |
407 | */ | |
408 | ||
409 | const OSSL_PROVIDER *OSSL_ENCODER_provider(const OSSL_ENCODER *encoder) | |
410 | { | |
411 | if (!ossl_assert(encoder != NULL)) { | |
412 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER); | |
413 | return 0; | |
414 | } | |
415 | ||
416 | return encoder->base.prov; | |
417 | } | |
418 | ||
419 | const char *OSSL_ENCODER_properties(const OSSL_ENCODER *encoder) | |
420 | { | |
421 | if (!ossl_assert(encoder != NULL)) { | |
422 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER); | |
423 | return 0; | |
424 | } | |
425 | ||
426 | return encoder->base.propdef; | |
427 | } | |
428 | ||
429 | int OSSL_ENCODER_number(const OSSL_ENCODER *encoder) | |
430 | { | |
431 | if (!ossl_assert(encoder != NULL)) { | |
432 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER); | |
433 | return 0; | |
434 | } | |
435 | ||
436 | return encoder->base.id; | |
437 | } | |
438 | ||
439 | int OSSL_ENCODER_is_a(const OSSL_ENCODER *encoder, const char *name) | |
440 | { | |
441 | if (encoder->base.prov != NULL) { | |
a829b735 | 442 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(encoder->base.prov); |
ece9304c RL |
443 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
444 | ||
445 | return ossl_namemap_name2num(namemap, name) == encoder->base.id; | |
446 | } | |
447 | return 0; | |
448 | } | |
449 | ||
450 | struct encoder_do_all_data_st { | |
451 | void (*user_fn)(void *method, void *arg); | |
452 | void *user_arg; | |
453 | }; | |
454 | ||
455 | static void encoder_do_one(OSSL_PROVIDER *provider, | |
456 | const OSSL_ALGORITHM *algodef, | |
457 | int no_store, void *vdata) | |
458 | { | |
459 | struct encoder_do_all_data_st *data = vdata; | |
a829b735 | 460 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(provider); |
ece9304c RL |
461 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
462 | const char *names = algodef->algorithm_names; | |
463 | int id = ossl_namemap_add_names(namemap, 0, names, NAME_SEPARATOR); | |
464 | void *method = NULL; | |
465 | ||
466 | if (id != 0) | |
467 | method = | |
468 | encoder_from_dispatch(id, algodef, provider); | |
469 | ||
470 | if (method != NULL) { | |
471 | data->user_fn(method, data->user_arg); | |
472 | OSSL_ENCODER_free(method); | |
473 | } | |
474 | } | |
475 | ||
b4250010 | 476 | void OSSL_ENCODER_do_all_provided(OSSL_LIB_CTX *libctx, |
ece9304c RL |
477 | void (*fn)(OSSL_ENCODER *encoder, void *arg), |
478 | void *arg) | |
479 | { | |
480 | struct encoder_do_all_data_st data; | |
481 | ||
482 | data.user_fn = (void (*)(void *, void *))fn; | |
483 | data.user_arg = arg; | |
484 | ||
485 | /* | |
486 | * No pre- or post-condition for this call, as this only creates methods | |
487 | * temporarly and then promptly destroys them. | |
488 | */ | |
489 | ossl_algorithm_do_all(libctx, OSSL_OP_ENCODER, NULL, NULL, | |
490 | encoder_do_one, NULL, &data); | |
491 | } | |
492 | ||
493 | void OSSL_ENCODER_names_do_all(const OSSL_ENCODER *encoder, | |
494 | void (*fn)(const char *name, void *data), | |
495 | void *data) | |
496 | { | |
497 | if (encoder == NULL) | |
498 | return; | |
499 | ||
500 | if (encoder->base.prov != NULL) { | |
a829b735 | 501 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(encoder->base.prov); |
ece9304c RL |
502 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
503 | ||
504 | ossl_namemap_doall_names(namemap, encoder->base.id, fn, data); | |
505 | } | |
506 | } | |
507 | ||
b8975c68 RL |
508 | const OSSL_PARAM * |
509 | OSSL_ENCODER_gettable_params(OSSL_ENCODER *encoder) | |
510 | { | |
511 | if (encoder != NULL && encoder->gettable_params != NULL) { | |
512 | void *provctx = ossl_provider_ctx(OSSL_ENCODER_provider(encoder)); | |
513 | ||
514 | return encoder->gettable_params(provctx); | |
515 | } | |
516 | return NULL; | |
517 | } | |
518 | ||
519 | int OSSL_ENCODER_get_params(OSSL_ENCODER *encoder, OSSL_PARAM params[]) | |
520 | { | |
521 | if (encoder != NULL && encoder->get_params != NULL) | |
522 | return encoder->get_params(params); | |
523 | return 0; | |
524 | } | |
525 | ||
ece9304c RL |
526 | const OSSL_PARAM *OSSL_ENCODER_settable_ctx_params(OSSL_ENCODER *encoder) |
527 | { | |
528 | if (encoder != NULL && encoder->settable_ctx_params != NULL) { | |
529 | void *provctx = ossl_provider_ctx(OSSL_ENCODER_provider(encoder)); | |
530 | ||
531 | return encoder->settable_ctx_params(provctx); | |
532 | } | |
533 | return NULL; | |
534 | } | |
535 | ||
536 | /* | |
537 | * Encoder context support | |
538 | */ | |
539 | ||
b8975c68 | 540 | OSSL_ENCODER_CTX *OSSL_ENCODER_CTX_new(void) |
ece9304c RL |
541 | { |
542 | OSSL_ENCODER_CTX *ctx; | |
543 | ||
b8975c68 | 544 | if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL) |
ece9304c | 545 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_MALLOC_FAILURE); |
ece9304c RL |
546 | |
547 | return ctx; | |
548 | } | |
549 | ||
b8975c68 RL |
550 | int OSSL_ENCODER_CTX_set_params(OSSL_ENCODER_CTX *ctx, |
551 | const OSSL_PARAM params[]) | |
ece9304c | 552 | { |
9096809b | 553 | int ok = 1; |
b8975c68 RL |
554 | size_t i; |
555 | size_t l; | |
556 | ||
ece9304c RL |
557 | if (!ossl_assert(ctx != NULL)) { |
558 | ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_PASSED_NULL_PARAMETER); | |
559 | return 0; | |
560 | } | |
561 | ||
b8975c68 RL |
562 | if (ctx->encoder_insts == NULL) |
563 | return 1; | |
ece9304c | 564 | |
b8975c68 RL |
565 | l = OSSL_ENCODER_CTX_get_num_encoders(ctx); |
566 | for (i = 0; i < l; i++) { | |
567 | OSSL_ENCODER_INSTANCE *encoder_inst = | |
568 | sk_OSSL_ENCODER_INSTANCE_value(ctx->encoder_insts, i); | |
569 | OSSL_ENCODER *encoder = OSSL_ENCODER_INSTANCE_get_encoder(encoder_inst); | |
570 | void *encoderctx = OSSL_ENCODER_INSTANCE_get_encoder_ctx(encoder_inst); | |
ece9304c | 571 | |
b8975c68 RL |
572 | if (encoderctx == NULL || encoder->set_ctx_params == NULL) |
573 | continue; | |
574 | if (!encoder->set_ctx_params(encoderctx, params)) | |
9096809b | 575 | ok = 0; |
ece9304c | 576 | } |
9096809b | 577 | return ok; |
ece9304c RL |
578 | } |
579 | ||
580 | void OSSL_ENCODER_CTX_free(OSSL_ENCODER_CTX *ctx) | |
581 | { | |
582 | if (ctx != NULL) { | |
b8975c68 RL |
583 | sk_OSSL_ENCODER_INSTANCE_pop_free(ctx->encoder_insts, |
584 | ossl_encoder_instance_free); | |
585 | OPENSSL_free(ctx->construct_data); | |
a517edec | 586 | ossl_pw_clear_passphrase_data(&ctx->pwdata); |
ece9304c RL |
587 | OPENSSL_free(ctx); |
588 | } | |
589 | } |