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ece9304c | 1 | /* |
fecb3aae | 2 | * Copyright 2020-2022 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 | 19 | #include "encoder_local.h" |
927d0566 | 20 | #include "crypto/context.h" |
ece9304c | 21 | |
ece9304c RL |
22 | /* |
23 | * Decoder can have multiple names, separated with colons in a name string | |
24 | */ | |
25 | #define NAME_SEPARATOR ':' | |
26 | ||
27 | /* Simple method structure constructor and destructor */ | |
28 | static OSSL_DECODER *ossl_decoder_new(void) | |
29 | { | |
30 | OSSL_DECODER *decoder = NULL; | |
31 | ||
32 | if ((decoder = OPENSSL_zalloc(sizeof(*decoder))) == NULL | |
33 | || (decoder->base.lock = CRYPTO_THREAD_lock_new()) == NULL) { | |
34 | OSSL_DECODER_free(decoder); | |
35 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE); | |
36 | return NULL; | |
37 | } | |
38 | ||
39 | decoder->base.refcnt = 1; | |
40 | ||
41 | return decoder; | |
42 | } | |
43 | ||
44 | int OSSL_DECODER_up_ref(OSSL_DECODER *decoder) | |
45 | { | |
46 | int ref = 0; | |
47 | ||
48 | CRYPTO_UP_REF(&decoder->base.refcnt, &ref, decoder->base.lock); | |
49 | return 1; | |
50 | } | |
51 | ||
52 | void OSSL_DECODER_free(OSSL_DECODER *decoder) | |
53 | { | |
54 | int ref = 0; | |
55 | ||
56 | if (decoder == NULL) | |
57 | return; | |
58 | ||
59 | CRYPTO_DOWN_REF(&decoder->base.refcnt, &ref, decoder->base.lock); | |
60 | if (ref > 0) | |
61 | return; | |
49664117 | 62 | OPENSSL_free(decoder->base.name); |
9379bf94 | 63 | ossl_property_free(decoder->base.parsed_propdef); |
ece9304c RL |
64 | ossl_provider_free(decoder->base.prov); |
65 | CRYPTO_THREAD_lock_free(decoder->base.lock); | |
66 | OPENSSL_free(decoder); | |
67 | } | |
68 | ||
ece9304c RL |
69 | /* Data to be passed through ossl_method_construct() */ |
70 | struct decoder_data_st { | |
b4250010 | 71 | OSSL_LIB_CTX *libctx; |
ece9304c RL |
72 | int id; /* For get_decoder_from_store() */ |
73 | const char *names; /* For get_decoder_from_store() */ | |
74 | const char *propquery; /* For get_decoder_from_store() */ | |
d6d42cda | 75 | |
9067cf6c RL |
76 | OSSL_METHOD_STORE *tmp_store; /* For get_tmp_decoder_store() */ |
77 | ||
e3a2ba75 | 78 | unsigned int flag_construct_error_occurred : 1; |
ece9304c RL |
79 | }; |
80 | ||
81 | /* | |
82 | * Generic routines to fetch / create DECODER methods with | |
83 | * ossl_method_construct() | |
84 | */ | |
85 | ||
86 | /* Temporary decoder method store, constructor and destructor */ | |
9067cf6c | 87 | static void *get_tmp_decoder_store(void *data) |
ece9304c | 88 | { |
9067cf6c RL |
89 | struct decoder_data_st *methdata = data; |
90 | ||
91 | if (methdata->tmp_store == NULL) | |
92 | methdata->tmp_store = ossl_method_store_new(methdata->libctx); | |
93 | return methdata->tmp_store; | |
ece9304c RL |
94 | } |
95 | ||
96 | static void dealloc_tmp_decoder_store(void *store) | |
97 | { | |
98 | if (store != NULL) | |
99 | ossl_method_store_free(store); | |
100 | } | |
101 | ||
102 | /* Get the permanent decoder store */ | |
b4250010 | 103 | static OSSL_METHOD_STORE *get_decoder_store(OSSL_LIB_CTX *libctx) |
ece9304c | 104 | { |
927d0566 | 105 | return ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_DECODER_STORE_INDEX); |
ece9304c RL |
106 | } |
107 | ||
108 | /* Get decoder methods from a store, or put one in */ | |
dc010ca6 RL |
109 | static void *get_decoder_from_store(void *store, const OSSL_PROVIDER **prov, |
110 | void *data) | |
ece9304c RL |
111 | { |
112 | struct decoder_data_st *methdata = data; | |
113 | void *method = NULL; | |
114 | int id; | |
115 | ||
92eb592b RL |
116 | /* |
117 | * get_decoder_from_store() is only called to try and get the method | |
118 | * that OSSL_DECODER_fetch() is asking for, and the name or name id are | |
119 | * passed via methdata. | |
120 | */ | |
121 | if ((id = methdata->id) == 0 && methdata->names != NULL) { | |
6882652e | 122 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx); |
92eb592b RL |
123 | const char *names = methdata->names; |
124 | const char *q = strchr(names, NAME_SEPARATOR); | |
125 | size_t l = (q == NULL ? strlen(names) : (size_t)(q - names)); | |
ece9304c | 126 | |
92eb592b RL |
127 | if (namemap == 0) |
128 | return NULL; | |
129 | id = ossl_namemap_name2num_n(namemap, names, l); | |
ece9304c RL |
130 | } |
131 | ||
92eb592b RL |
132 | if (id == 0) |
133 | return NULL; | |
134 | ||
ece9304c | 135 | if (store == NULL |
6882652e | 136 | && (store = get_decoder_store(methdata->libctx)) == NULL) |
ece9304c RL |
137 | return NULL; |
138 | ||
dc010ca6 | 139 | if (!ossl_method_store_fetch(store, id, methdata->propquery, prov, &method)) |
ece9304c RL |
140 | return NULL; |
141 | return method; | |
142 | } | |
143 | ||
6882652e RL |
144 | static int put_decoder_in_store(void *store, void *method, |
145 | const OSSL_PROVIDER *prov, | |
146 | const char *names, const char *propdef, | |
147 | void *data) | |
ece9304c | 148 | { |
6882652e | 149 | struct decoder_data_st *methdata = data; |
ece9304c RL |
150 | OSSL_NAMEMAP *namemap; |
151 | int id; | |
92eb592b RL |
152 | size_t l = 0; |
153 | ||
154 | /* | |
155 | * put_decoder_in_store() is only called with an OSSL_DECODER method that | |
156 | * was successfully created by construct_decoder() below, which means that | |
157 | * all the names should already be stored in the namemap with the same | |
158 | * numeric identity, so just use the first to get that identity. | |
159 | */ | |
160 | if (names != NULL) { | |
161 | const char *q = strchr(names, NAME_SEPARATOR); | |
162 | ||
163 | l = (q == NULL ? strlen(names) : (size_t)(q - names)); | |
164 | } | |
ece9304c | 165 | |
6882652e | 166 | if ((namemap = ossl_namemap_stored(methdata->libctx)) == NULL |
92eb592b | 167 | || (id = ossl_namemap_name2num_n(namemap, names, l)) == 0) |
ece9304c RL |
168 | return 0; |
169 | ||
6882652e | 170 | if (store == NULL && (store = get_decoder_store(methdata->libctx)) == NULL) |
ece9304c RL |
171 | return 0; |
172 | ||
173 | return ossl_method_store_add(store, prov, id, propdef, method, | |
174 | (int (*)(void *))OSSL_DECODER_up_ref, | |
175 | (void (*)(void *))OSSL_DECODER_free); | |
176 | } | |
177 | ||
178 | /* Create and populate a decoder method */ | |
309a78aa RL |
179 | void *ossl_decoder_from_algorithm(int id, const OSSL_ALGORITHM *algodef, |
180 | OSSL_PROVIDER *prov) | |
ece9304c RL |
181 | { |
182 | OSSL_DECODER *decoder = NULL; | |
183 | const OSSL_DISPATCH *fns = algodef->implementation; | |
9379bf94 | 184 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov); |
ece9304c RL |
185 | |
186 | if ((decoder = ossl_decoder_new()) == NULL) | |
187 | return NULL; | |
188 | decoder->base.id = id; | |
49664117 P |
189 | if ((decoder->base.name = ossl_algorithm_get1_first_name(algodef)) == NULL) { |
190 | OSSL_DECODER_free(decoder); | |
191 | return NULL; | |
192 | } | |
8ea5a6b5 | 193 | decoder->base.algodef = algodef; |
9379bf94 RL |
194 | decoder->base.parsed_propdef |
195 | = ossl_parse_property(libctx, algodef->property_definition); | |
ece9304c RL |
196 | |
197 | for (; fns->function_id != 0; fns++) { | |
198 | switch (fns->function_id) { | |
199 | case OSSL_FUNC_DECODER_NEWCTX: | |
200 | if (decoder->newctx == NULL) | |
201 | decoder->newctx = OSSL_FUNC_decoder_newctx(fns); | |
202 | break; | |
203 | case OSSL_FUNC_DECODER_FREECTX: | |
204 | if (decoder->freectx == NULL) | |
205 | decoder->freectx = OSSL_FUNC_decoder_freectx(fns); | |
206 | break; | |
207 | case OSSL_FUNC_DECODER_GET_PARAMS: | |
208 | if (decoder->get_params == NULL) | |
209 | decoder->get_params = | |
210 | OSSL_FUNC_decoder_get_params(fns); | |
211 | break; | |
212 | case OSSL_FUNC_DECODER_GETTABLE_PARAMS: | |
213 | if (decoder->gettable_params == NULL) | |
214 | decoder->gettable_params = | |
215 | OSSL_FUNC_decoder_gettable_params(fns); | |
216 | break; | |
217 | case OSSL_FUNC_DECODER_SET_CTX_PARAMS: | |
218 | if (decoder->set_ctx_params == NULL) | |
219 | decoder->set_ctx_params = | |
220 | OSSL_FUNC_decoder_set_ctx_params(fns); | |
221 | break; | |
222 | case OSSL_FUNC_DECODER_SETTABLE_CTX_PARAMS: | |
223 | if (decoder->settable_ctx_params == NULL) | |
224 | decoder->settable_ctx_params = | |
225 | OSSL_FUNC_decoder_settable_ctx_params(fns); | |
226 | break; | |
67c91ca2 RL |
227 | case OSSL_FUNC_DECODER_DOES_SELECTION: |
228 | if (decoder->does_selection == NULL) | |
229 | decoder->does_selection = | |
230 | OSSL_FUNC_decoder_does_selection(fns); | |
231 | break; | |
ece9304c RL |
232 | case OSSL_FUNC_DECODER_DECODE: |
233 | if (decoder->decode == NULL) | |
234 | decoder->decode = OSSL_FUNC_decoder_decode(fns); | |
235 | break; | |
236 | case OSSL_FUNC_DECODER_EXPORT_OBJECT: | |
237 | if (decoder->export_object == NULL) | |
238 | decoder->export_object = OSSL_FUNC_decoder_export_object(fns); | |
239 | break; | |
240 | } | |
241 | } | |
242 | /* | |
243 | * Try to check that the method is sensible. | |
244 | * If you have a constructor, you must have a destructor and vice versa. | |
245 | * You must have at least one of the encoding driver functions. | |
246 | */ | |
247 | if (!((decoder->newctx == NULL && decoder->freectx == NULL) | |
248 | || (decoder->newctx != NULL && decoder->freectx != NULL)) | |
c1aba076 | 249 | || decoder->decode == NULL) { |
ece9304c RL |
250 | OSSL_DECODER_free(decoder); |
251 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_INVALID_PROVIDER_FUNCTIONS); | |
252 | return NULL; | |
253 | } | |
254 | ||
255 | if (prov != NULL && !ossl_provider_up_ref(prov)) { | |
256 | OSSL_DECODER_free(decoder); | |
257 | return NULL; | |
258 | } | |
259 | ||
260 | decoder->base.prov = prov; | |
261 | return decoder; | |
262 | } | |
263 | ||
264 | ||
265 | /* | |
266 | * The core fetching functionality passes the names of the implementation. | |
267 | * This function is responsible to getting an identity number for them, | |
309a78aa | 268 | * then call ossl_decoder_from_algorithm() with that identity number. |
ece9304c RL |
269 | */ |
270 | static void *construct_decoder(const OSSL_ALGORITHM *algodef, | |
d6d42cda | 271 | OSSL_PROVIDER *prov, void *data) |
ece9304c RL |
272 | { |
273 | /* | |
274 | * This function is only called if get_decoder_from_store() returned | |
275 | * NULL, so it's safe to say that of all the spots to create a new | |
276 | * namemap entry, this is it. Should the name already exist there, we | |
277 | * know that ossl_namemap_add() will return its corresponding number. | |
278 | */ | |
d6d42cda | 279 | struct decoder_data_st *methdata = data; |
a829b735 | 280 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov); |
ece9304c RL |
281 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
282 | const char *names = algodef->algorithm_names; | |
283 | int id = ossl_namemap_add_names(namemap, 0, names, NAME_SEPARATOR); | |
284 | void *method = NULL; | |
285 | ||
286 | if (id != 0) | |
309a78aa | 287 | method = ossl_decoder_from_algorithm(id, algodef, prov); |
ece9304c | 288 | |
d6d42cda RL |
289 | /* |
290 | * Flag to indicate that there was actual construction errors. This | |
291 | * helps inner_evp_generic_fetch() determine what error it should | |
292 | * record on inaccessible algorithms. | |
293 | */ | |
294 | if (method == NULL) | |
e3a2ba75 | 295 | methdata->flag_construct_error_occurred = 1; |
d6d42cda | 296 | |
ece9304c RL |
297 | return method; |
298 | } | |
299 | ||
300 | /* Intermediary function to avoid ugly casts, used below */ | |
301 | static void destruct_decoder(void *method, void *data) | |
302 | { | |
303 | OSSL_DECODER_free(method); | |
304 | } | |
305 | ||
306 | static int up_ref_decoder(void *method) | |
307 | { | |
308 | return OSSL_DECODER_up_ref(method); | |
309 | } | |
310 | ||
311 | static void free_decoder(void *method) | |
312 | { | |
313 | OSSL_DECODER_free(method); | |
314 | } | |
315 | ||
316 | /* Fetching support. Can fetch by numeric identity or by name */ | |
9067cf6c | 317 | static OSSL_DECODER * |
16ff70a5 | 318 | inner_ossl_decoder_fetch(struct decoder_data_st *methdata, |
9067cf6c | 319 | const char *name, const char *properties) |
ece9304c | 320 | { |
9067cf6c RL |
321 | OSSL_METHOD_STORE *store = get_decoder_store(methdata->libctx); |
322 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx); | |
af788ad6 | 323 | const char *const propq = properties != NULL ? properties : ""; |
ece9304c | 324 | void *method = NULL; |
16ff70a5 | 325 | int unsupported, id; |
ece9304c | 326 | |
d6d42cda RL |
327 | if (store == NULL || namemap == NULL) { |
328 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_INVALID_ARGUMENT); | |
ece9304c | 329 | return NULL; |
d6d42cda | 330 | } |
ece9304c | 331 | |
16ff70a5 | 332 | id = name != NULL ? ossl_namemap_name2num(namemap, name) : 0; |
ece9304c | 333 | |
d6d42cda RL |
334 | /* |
335 | * If we haven't found the name yet, chances are that the algorithm to | |
336 | * be fetched is unsupported. | |
337 | */ | |
16ff70a5 | 338 | unsupported = id == 0; |
d6d42cda | 339 | |
ece9304c | 340 | if (id == 0 |
af788ad6 | 341 | || !ossl_method_store_cache_get(store, NULL, id, propq, &method)) { |
ece9304c | 342 | OSSL_METHOD_CONSTRUCT_METHOD mcm = { |
9067cf6c | 343 | get_tmp_decoder_store, |
ece9304c RL |
344 | get_decoder_from_store, |
345 | put_decoder_in_store, | |
346 | construct_decoder, | |
347 | destruct_decoder | |
348 | }; | |
cd1981a0 | 349 | OSSL_PROVIDER *prov = NULL; |
9067cf6c | 350 | |
9067cf6c RL |
351 | methdata->id = id; |
352 | methdata->names = name; | |
af788ad6 | 353 | methdata->propquery = propq; |
9067cf6c RL |
354 | methdata->flag_construct_error_occurred = 0; |
355 | if ((method = ossl_method_construct(methdata->libctx, OSSL_OP_DECODER, | |
cd1981a0 | 356 | &prov, 0 /* !force_cache */, |
9067cf6c | 357 | &mcm, methdata)) != NULL) { |
ece9304c RL |
358 | /* |
359 | * If construction did create a method for us, we know that | |
360 | * there is a correct name_id and meth_id, since those have | |
361 | * already been calculated in get_decoder_from_store() and | |
362 | * put_decoder_in_store() above. | |
363 | */ | |
07562828 | 364 | if (id == 0 && name != NULL) |
ece9304c | 365 | id = ossl_namemap_name2num(namemap, name); |
07562828 | 366 | if (id != 0) |
af788ad6 | 367 | ossl_method_store_cache_set(store, prov, id, propq, method, |
07562828 | 368 | up_ref_decoder, free_decoder); |
ece9304c | 369 | } |
d6d42cda RL |
370 | |
371 | /* | |
372 | * If we never were in the constructor, the algorithm to be fetched | |
373 | * is unsupported. | |
374 | */ | |
9067cf6c | 375 | unsupported = !methdata->flag_construct_error_occurred; |
d6d42cda RL |
376 | } |
377 | ||
07562828 | 378 | if ((id != 0 || name != NULL) && method == NULL) { |
d6d42cda RL |
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_DECODER, code, | |
384 | "%s, Name (%s : %d), Properties (%s)", | |
9067cf6c | 385 | ossl_lib_ctx_get_descriptor(methdata->libctx), |
1a01e5c2 | 386 | name == NULL ? "<null>" : name, id, |
d6d42cda | 387 | properties == NULL ? "<null>" : properties); |
ece9304c RL |
388 | } |
389 | ||
390 | return method; | |
391 | } | |
392 | ||
b4250010 | 393 | OSSL_DECODER *OSSL_DECODER_fetch(OSSL_LIB_CTX *libctx, const char *name, |
ece9304c RL |
394 | const char *properties) |
395 | { | |
9067cf6c RL |
396 | struct decoder_data_st methdata; |
397 | void *method; | |
398 | ||
399 | methdata.libctx = libctx; | |
400 | methdata.tmp_store = NULL; | |
16ff70a5 | 401 | method = inner_ossl_decoder_fetch(&methdata, name, properties); |
9067cf6c RL |
402 | dealloc_tmp_decoder_store(methdata.tmp_store); |
403 | return method; | |
ece9304c RL |
404 | } |
405 | ||
32e3c071 RL |
406 | int ossl_decoder_store_cache_flush(OSSL_LIB_CTX *libctx) |
407 | { | |
408 | OSSL_METHOD_STORE *store = get_decoder_store(libctx); | |
409 | ||
410 | if (store != NULL) | |
411 | return ossl_method_store_cache_flush_all(store); | |
412 | return 1; | |
413 | } | |
414 | ||
415 | int ossl_decoder_store_remove_all_provided(const OSSL_PROVIDER *prov) | |
416 | { | |
417 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov); | |
418 | OSSL_METHOD_STORE *store = get_decoder_store(libctx); | |
419 | ||
420 | if (store != NULL) | |
421 | return ossl_method_store_remove_all_provided(store, prov); | |
422 | return 1; | |
423 | } | |
424 | ||
ece9304c RL |
425 | /* |
426 | * Library of basic method functions | |
427 | */ | |
428 | ||
ed576acd | 429 | const OSSL_PROVIDER *OSSL_DECODER_get0_provider(const OSSL_DECODER *decoder) |
ece9304c RL |
430 | { |
431 | if (!ossl_assert(decoder != NULL)) { | |
432 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
433 | return 0; | |
434 | } | |
435 | ||
436 | return decoder->base.prov; | |
437 | } | |
438 | ||
ed576acd | 439 | const char *OSSL_DECODER_get0_properties(const OSSL_DECODER *decoder) |
ece9304c RL |
440 | { |
441 | if (!ossl_assert(decoder != NULL)) { | |
442 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
443 | return 0; | |
444 | } | |
445 | ||
8ea5a6b5 | 446 | return decoder->base.algodef->property_definition; |
ece9304c RL |
447 | } |
448 | ||
9379bf94 RL |
449 | const OSSL_PROPERTY_LIST * |
450 | ossl_decoder_parsed_properties(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.parsed_propdef; | |
458 | } | |
459 | ||
bcd5d3a2 | 460 | int ossl_decoder_get_number(const OSSL_DECODER *decoder) |
ece9304c RL |
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.id; | |
468 | } | |
469 | ||
ed576acd | 470 | const char *OSSL_DECODER_get0_name(const OSSL_DECODER *decoder) |
49664117 P |
471 | { |
472 | return decoder->base.name; | |
473 | } | |
474 | ||
ed576acd | 475 | const char *OSSL_DECODER_get0_description(const OSSL_DECODER *decoder) |
1010884e | 476 | { |
8ea5a6b5 | 477 | return decoder->base.algodef->algorithm_description; |
1010884e RL |
478 | } |
479 | ||
ece9304c RL |
480 | int OSSL_DECODER_is_a(const OSSL_DECODER *decoder, const char *name) |
481 | { | |
482 | if (decoder->base.prov != NULL) { | |
a829b735 | 483 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov); |
ece9304c RL |
484 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
485 | ||
486 | return ossl_namemap_name2num(namemap, name) == decoder->base.id; | |
487 | } | |
488 | return 0; | |
489 | } | |
490 | ||
24755445 HL |
491 | static int resolve_name(OSSL_DECODER *decoder, const char *name) |
492 | { | |
493 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov); | |
494 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); | |
495 | ||
496 | return ossl_namemap_name2num(namemap, name); | |
497 | } | |
498 | ||
499 | int ossl_decoder_fast_is_a(OSSL_DECODER *decoder, const char *name, int *id_cache) | |
500 | { | |
501 | int id = *id_cache; | |
502 | ||
503 | if (id <= 0) | |
504 | *id_cache = id = resolve_name(decoder, name); | |
505 | ||
506 | return id > 0 && ossl_decoder_get_number(decoder) == id; | |
507 | } | |
508 | ||
07562828 RL |
509 | struct do_one_data_st { |
510 | void (*user_fn)(OSSL_DECODER *decoder, void *arg); | |
ece9304c RL |
511 | void *user_arg; |
512 | }; | |
513 | ||
07562828 | 514 | static void do_one(ossl_unused int id, void *method, void *arg) |
ece9304c | 515 | { |
07562828 | 516 | struct do_one_data_st *data = arg; |
ece9304c | 517 | |
07562828 | 518 | data->user_fn(method, data->user_arg); |
ece9304c RL |
519 | } |
520 | ||
b4250010 | 521 | void OSSL_DECODER_do_all_provided(OSSL_LIB_CTX *libctx, |
07562828 RL |
522 | void (*user_fn)(OSSL_DECODER *decoder, |
523 | void *arg), | |
524 | void *user_arg) | |
ece9304c | 525 | { |
07562828 RL |
526 | struct decoder_data_st methdata; |
527 | struct do_one_data_st data; | |
528 | ||
529 | methdata.libctx = libctx; | |
530 | methdata.tmp_store = NULL; | |
16ff70a5 | 531 | (void)inner_ossl_decoder_fetch(&methdata, NULL, NULL /* properties */); |
ece9304c | 532 | |
07562828 RL |
533 | data.user_fn = user_fn; |
534 | data.user_arg = user_arg; | |
535 | if (methdata.tmp_store != NULL) | |
536 | ossl_method_store_do_all(methdata.tmp_store, &do_one, &data); | |
537 | ossl_method_store_do_all(get_decoder_store(libctx), &do_one, &data); | |
538 | dealloc_tmp_decoder_store(methdata.tmp_store); | |
ece9304c RL |
539 | } |
540 | ||
d84f5515 MC |
541 | int OSSL_DECODER_names_do_all(const OSSL_DECODER *decoder, |
542 | void (*fn)(const char *name, void *data), | |
543 | void *data) | |
ece9304c RL |
544 | { |
545 | if (decoder == NULL) | |
d84f5515 | 546 | return 0; |
ece9304c RL |
547 | |
548 | if (decoder->base.prov != NULL) { | |
a829b735 | 549 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov); |
ece9304c RL |
550 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
551 | ||
d84f5515 | 552 | return ossl_namemap_doall_names(namemap, decoder->base.id, fn, data); |
ece9304c | 553 | } |
d84f5515 MC |
554 | |
555 | return 1; | |
ece9304c RL |
556 | } |
557 | ||
558 | const OSSL_PARAM * | |
559 | OSSL_DECODER_gettable_params(OSSL_DECODER *decoder) | |
560 | { | |
561 | if (decoder != NULL && decoder->gettable_params != NULL) { | |
ed576acd | 562 | void *provctx = ossl_provider_ctx(OSSL_DECODER_get0_provider(decoder)); |
ece9304c RL |
563 | |
564 | return decoder->gettable_params(provctx); | |
565 | } | |
566 | return NULL; | |
567 | } | |
568 | ||
569 | int OSSL_DECODER_get_params(OSSL_DECODER *decoder, OSSL_PARAM params[]) | |
570 | { | |
571 | if (decoder != NULL && decoder->get_params != NULL) | |
572 | return decoder->get_params(params); | |
573 | return 0; | |
574 | } | |
575 | ||
576 | const OSSL_PARAM * | |
577 | OSSL_DECODER_settable_ctx_params(OSSL_DECODER *decoder) | |
578 | { | |
579 | if (decoder != NULL && decoder->settable_ctx_params != NULL) { | |
ed576acd | 580 | void *provctx = ossl_provider_ctx(OSSL_DECODER_get0_provider(decoder)); |
ece9304c RL |
581 | |
582 | return decoder->settable_ctx_params(provctx); | |
583 | } | |
584 | return NULL; | |
585 | } | |
586 | ||
587 | /* | |
588 | * Decoder context support | |
589 | */ | |
590 | ||
591 | /* | |
592 | * |encoder| value NULL is valid, and signifies that there is no decoder. | |
593 | * This is useful to provide fallback mechanisms. | |
594 | * Functions that want to verify if there is a decoder can do so with | |
595 | * OSSL_DECODER_CTX_get_decoder() | |
596 | */ | |
597 | OSSL_DECODER_CTX *OSSL_DECODER_CTX_new(void) | |
598 | { | |
599 | OSSL_DECODER_CTX *ctx; | |
600 | ||
48b62fb3 | 601 | if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL) |
ece9304c | 602 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE); |
ece9304c | 603 | |
ece9304c RL |
604 | return ctx; |
605 | } | |
606 | ||
607 | int OSSL_DECODER_CTX_set_params(OSSL_DECODER_CTX *ctx, | |
608 | const OSSL_PARAM params[]) | |
609 | { | |
9096809b | 610 | int ok = 1; |
ece9304c RL |
611 | size_t i; |
612 | size_t l; | |
613 | ||
614 | if (!ossl_assert(ctx != NULL)) { | |
615 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
616 | return 0; | |
617 | } | |
618 | ||
619 | if (ctx->decoder_insts == NULL) | |
620 | return 1; | |
621 | ||
48b62fb3 | 622 | l = OSSL_DECODER_CTX_get_num_decoders(ctx); |
ece9304c RL |
623 | for (i = 0; i < l; i++) { |
624 | OSSL_DECODER_INSTANCE *decoder_inst = | |
625 | sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, i); | |
48b62fb3 RL |
626 | OSSL_DECODER *decoder = |
627 | OSSL_DECODER_INSTANCE_get_decoder(decoder_inst); | |
628 | OSSL_DECODER *decoderctx = | |
629 | OSSL_DECODER_INSTANCE_get_decoder_ctx(decoder_inst); | |
ece9304c | 630 | |
48b62fb3 | 631 | if (decoderctx == NULL || decoder->set_ctx_params == NULL) |
ece9304c | 632 | continue; |
48b62fb3 | 633 | if (!decoder->set_ctx_params(decoderctx, params)) |
9096809b | 634 | ok = 0; |
ece9304c | 635 | } |
9096809b | 636 | return ok; |
ece9304c RL |
637 | } |
638 | ||
ece9304c RL |
639 | void OSSL_DECODER_CTX_free(OSSL_DECODER_CTX *ctx) |
640 | { | |
641 | if (ctx != NULL) { | |
642 | if (ctx->cleanup != NULL) | |
643 | ctx->cleanup(ctx->construct_data); | |
644 | sk_OSSL_DECODER_INSTANCE_pop_free(ctx->decoder_insts, | |
48b62fb3 | 645 | ossl_decoder_instance_free); |
a517edec | 646 | ossl_pw_clear_passphrase_data(&ctx->pwdata); |
ece9304c RL |
647 | OPENSSL_free(ctx); |
648 | } | |
649 | } |