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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 RL |
317 | static OSSL_DECODER * |
318 | inner_ossl_decoder_fetch(struct decoder_data_st *methdata, int id, | |
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; |
d6d42cda | 325 | int unsupported = 0; |
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 RL |
331 | |
332 | /* | |
07562828 | 333 | * If we have been passed both an id and a name, we have an |
ece9304c RL |
334 | * internal programming error. |
335 | */ | |
07562828 | 336 | if (!ossl_assert(id == 0 || name == NULL)) { |
d6d42cda | 337 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_INTERNAL_ERROR); |
ece9304c | 338 | return NULL; |
d6d42cda | 339 | } |
ece9304c | 340 | |
07562828 | 341 | if (id == 0 && name != NULL) |
ece9304c RL |
342 | id = ossl_namemap_name2num(namemap, name); |
343 | ||
d6d42cda RL |
344 | /* |
345 | * If we haven't found the name yet, chances are that the algorithm to | |
346 | * be fetched is unsupported. | |
347 | */ | |
348 | if (id == 0) | |
349 | unsupported = 1; | |
350 | ||
ece9304c | 351 | if (id == 0 |
af788ad6 | 352 | || !ossl_method_store_cache_get(store, NULL, id, propq, &method)) { |
ece9304c | 353 | OSSL_METHOD_CONSTRUCT_METHOD mcm = { |
9067cf6c | 354 | get_tmp_decoder_store, |
ece9304c RL |
355 | get_decoder_from_store, |
356 | put_decoder_in_store, | |
357 | construct_decoder, | |
358 | destruct_decoder | |
359 | }; | |
cd1981a0 | 360 | OSSL_PROVIDER *prov = NULL; |
9067cf6c | 361 | |
9067cf6c RL |
362 | methdata->id = id; |
363 | methdata->names = name; | |
af788ad6 | 364 | methdata->propquery = propq; |
9067cf6c RL |
365 | methdata->flag_construct_error_occurred = 0; |
366 | if ((method = ossl_method_construct(methdata->libctx, OSSL_OP_DECODER, | |
cd1981a0 | 367 | &prov, 0 /* !force_cache */, |
9067cf6c | 368 | &mcm, methdata)) != NULL) { |
ece9304c RL |
369 | /* |
370 | * If construction did create a method for us, we know that | |
371 | * there is a correct name_id and meth_id, since those have | |
372 | * already been calculated in get_decoder_from_store() and | |
373 | * put_decoder_in_store() above. | |
374 | */ | |
07562828 | 375 | if (id == 0 && name != NULL) |
ece9304c | 376 | id = ossl_namemap_name2num(namemap, name); |
07562828 | 377 | if (id != 0) |
af788ad6 | 378 | ossl_method_store_cache_set(store, prov, id, propq, method, |
07562828 | 379 | up_ref_decoder, free_decoder); |
ece9304c | 380 | } |
d6d42cda RL |
381 | |
382 | /* | |
383 | * If we never were in the constructor, the algorithm to be fetched | |
384 | * is unsupported. | |
385 | */ | |
9067cf6c | 386 | unsupported = !methdata->flag_construct_error_occurred; |
d6d42cda RL |
387 | } |
388 | ||
07562828 | 389 | if ((id != 0 || name != NULL) && method == NULL) { |
d6d42cda RL |
390 | int code = unsupported ? ERR_R_UNSUPPORTED : ERR_R_FETCH_FAILED; |
391 | ||
392 | if (name == NULL) | |
393 | name = ossl_namemap_num2name(namemap, id, 0); | |
394 | ERR_raise_data(ERR_LIB_OSSL_DECODER, code, | |
395 | "%s, Name (%s : %d), Properties (%s)", | |
9067cf6c | 396 | ossl_lib_ctx_get_descriptor(methdata->libctx), |
d6d42cda RL |
397 | name = NULL ? "<null>" : name, id, |
398 | properties == NULL ? "<null>" : properties); | |
ece9304c RL |
399 | } |
400 | ||
401 | return method; | |
402 | } | |
403 | ||
b4250010 | 404 | OSSL_DECODER *OSSL_DECODER_fetch(OSSL_LIB_CTX *libctx, const char *name, |
ece9304c RL |
405 | const char *properties) |
406 | { | |
9067cf6c RL |
407 | struct decoder_data_st methdata; |
408 | void *method; | |
409 | ||
410 | methdata.libctx = libctx; | |
411 | methdata.tmp_store = NULL; | |
412 | method = inner_ossl_decoder_fetch(&methdata, 0, name, properties); | |
413 | dealloc_tmp_decoder_store(methdata.tmp_store); | |
414 | return method; | |
ece9304c RL |
415 | } |
416 | ||
b4250010 | 417 | OSSL_DECODER *ossl_decoder_fetch_by_number(OSSL_LIB_CTX *libctx, int id, |
ece9304c RL |
418 | const char *properties) |
419 | { | |
9067cf6c RL |
420 | struct decoder_data_st methdata; |
421 | void *method; | |
422 | ||
423 | methdata.libctx = libctx; | |
424 | methdata.tmp_store = NULL; | |
425 | method = inner_ossl_decoder_fetch(&methdata, id, NULL, properties); | |
426 | dealloc_tmp_decoder_store(methdata.tmp_store); | |
427 | return method; | |
ece9304c RL |
428 | } |
429 | ||
430 | /* | |
431 | * Library of basic method functions | |
432 | */ | |
433 | ||
ed576acd | 434 | const OSSL_PROVIDER *OSSL_DECODER_get0_provider(const OSSL_DECODER *decoder) |
ece9304c RL |
435 | { |
436 | if (!ossl_assert(decoder != NULL)) { | |
437 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
438 | return 0; | |
439 | } | |
440 | ||
441 | return decoder->base.prov; | |
442 | } | |
443 | ||
ed576acd | 444 | const char *OSSL_DECODER_get0_properties(const OSSL_DECODER *decoder) |
ece9304c RL |
445 | { |
446 | if (!ossl_assert(decoder != NULL)) { | |
447 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
448 | return 0; | |
449 | } | |
450 | ||
8ea5a6b5 | 451 | return decoder->base.algodef->property_definition; |
ece9304c RL |
452 | } |
453 | ||
9379bf94 RL |
454 | const OSSL_PROPERTY_LIST * |
455 | ossl_decoder_parsed_properties(const OSSL_DECODER *decoder) | |
456 | { | |
457 | if (!ossl_assert(decoder != NULL)) { | |
458 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | return decoder->base.parsed_propdef; | |
463 | } | |
464 | ||
bcd5d3a2 | 465 | int ossl_decoder_get_number(const OSSL_DECODER *decoder) |
ece9304c RL |
466 | { |
467 | if (!ossl_assert(decoder != NULL)) { | |
468 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
469 | return 0; | |
470 | } | |
471 | ||
472 | return decoder->base.id; | |
473 | } | |
474 | ||
ed576acd | 475 | const char *OSSL_DECODER_get0_name(const OSSL_DECODER *decoder) |
49664117 P |
476 | { |
477 | return decoder->base.name; | |
478 | } | |
479 | ||
ed576acd | 480 | const char *OSSL_DECODER_get0_description(const OSSL_DECODER *decoder) |
1010884e | 481 | { |
8ea5a6b5 | 482 | return decoder->base.algodef->algorithm_description; |
1010884e RL |
483 | } |
484 | ||
ece9304c RL |
485 | int OSSL_DECODER_is_a(const OSSL_DECODER *decoder, const char *name) |
486 | { | |
487 | if (decoder->base.prov != NULL) { | |
a829b735 | 488 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov); |
ece9304c RL |
489 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
490 | ||
491 | return ossl_namemap_name2num(namemap, name) == decoder->base.id; | |
492 | } | |
493 | return 0; | |
494 | } | |
495 | ||
24755445 HL |
496 | static int resolve_name(OSSL_DECODER *decoder, const char *name) |
497 | { | |
498 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov); | |
499 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); | |
500 | ||
501 | return ossl_namemap_name2num(namemap, name); | |
502 | } | |
503 | ||
504 | int ossl_decoder_fast_is_a(OSSL_DECODER *decoder, const char *name, int *id_cache) | |
505 | { | |
506 | int id = *id_cache; | |
507 | ||
508 | if (id <= 0) | |
509 | *id_cache = id = resolve_name(decoder, name); | |
510 | ||
511 | return id > 0 && ossl_decoder_get_number(decoder) == id; | |
512 | } | |
513 | ||
07562828 RL |
514 | struct do_one_data_st { |
515 | void (*user_fn)(OSSL_DECODER *decoder, void *arg); | |
ece9304c RL |
516 | void *user_arg; |
517 | }; | |
518 | ||
07562828 | 519 | static void do_one(ossl_unused int id, void *method, void *arg) |
ece9304c | 520 | { |
07562828 | 521 | struct do_one_data_st *data = arg; |
ece9304c | 522 | |
07562828 | 523 | data->user_fn(method, data->user_arg); |
ece9304c RL |
524 | } |
525 | ||
b4250010 | 526 | void OSSL_DECODER_do_all_provided(OSSL_LIB_CTX *libctx, |
07562828 RL |
527 | void (*user_fn)(OSSL_DECODER *decoder, |
528 | void *arg), | |
529 | void *user_arg) | |
ece9304c | 530 | { |
07562828 RL |
531 | struct decoder_data_st methdata; |
532 | struct do_one_data_st data; | |
533 | ||
534 | methdata.libctx = libctx; | |
535 | methdata.tmp_store = NULL; | |
536 | (void)inner_ossl_decoder_fetch(&methdata, 0, NULL, NULL /* properties */); | |
ece9304c | 537 | |
07562828 RL |
538 | data.user_fn = user_fn; |
539 | data.user_arg = user_arg; | |
540 | if (methdata.tmp_store != NULL) | |
541 | ossl_method_store_do_all(methdata.tmp_store, &do_one, &data); | |
542 | ossl_method_store_do_all(get_decoder_store(libctx), &do_one, &data); | |
543 | dealloc_tmp_decoder_store(methdata.tmp_store); | |
ece9304c RL |
544 | } |
545 | ||
d84f5515 MC |
546 | int OSSL_DECODER_names_do_all(const OSSL_DECODER *decoder, |
547 | void (*fn)(const char *name, void *data), | |
548 | void *data) | |
ece9304c RL |
549 | { |
550 | if (decoder == NULL) | |
d84f5515 | 551 | return 0; |
ece9304c RL |
552 | |
553 | if (decoder->base.prov != NULL) { | |
a829b735 | 554 | OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov); |
ece9304c RL |
555 | OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx); |
556 | ||
d84f5515 | 557 | return ossl_namemap_doall_names(namemap, decoder->base.id, fn, data); |
ece9304c | 558 | } |
d84f5515 MC |
559 | |
560 | return 1; | |
ece9304c RL |
561 | } |
562 | ||
563 | const OSSL_PARAM * | |
564 | OSSL_DECODER_gettable_params(OSSL_DECODER *decoder) | |
565 | { | |
566 | if (decoder != NULL && decoder->gettable_params != NULL) { | |
ed576acd | 567 | void *provctx = ossl_provider_ctx(OSSL_DECODER_get0_provider(decoder)); |
ece9304c RL |
568 | |
569 | return decoder->gettable_params(provctx); | |
570 | } | |
571 | return NULL; | |
572 | } | |
573 | ||
574 | int OSSL_DECODER_get_params(OSSL_DECODER *decoder, OSSL_PARAM params[]) | |
575 | { | |
576 | if (decoder != NULL && decoder->get_params != NULL) | |
577 | return decoder->get_params(params); | |
578 | return 0; | |
579 | } | |
580 | ||
581 | const OSSL_PARAM * | |
582 | OSSL_DECODER_settable_ctx_params(OSSL_DECODER *decoder) | |
583 | { | |
584 | if (decoder != NULL && decoder->settable_ctx_params != NULL) { | |
ed576acd | 585 | void *provctx = ossl_provider_ctx(OSSL_DECODER_get0_provider(decoder)); |
ece9304c RL |
586 | |
587 | return decoder->settable_ctx_params(provctx); | |
588 | } | |
589 | return NULL; | |
590 | } | |
591 | ||
592 | /* | |
593 | * Decoder context support | |
594 | */ | |
595 | ||
596 | /* | |
597 | * |encoder| value NULL is valid, and signifies that there is no decoder. | |
598 | * This is useful to provide fallback mechanisms. | |
599 | * Functions that want to verify if there is a decoder can do so with | |
600 | * OSSL_DECODER_CTX_get_decoder() | |
601 | */ | |
602 | OSSL_DECODER_CTX *OSSL_DECODER_CTX_new(void) | |
603 | { | |
604 | OSSL_DECODER_CTX *ctx; | |
605 | ||
48b62fb3 | 606 | if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL) |
ece9304c | 607 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE); |
ece9304c | 608 | |
ece9304c RL |
609 | return ctx; |
610 | } | |
611 | ||
612 | int OSSL_DECODER_CTX_set_params(OSSL_DECODER_CTX *ctx, | |
613 | const OSSL_PARAM params[]) | |
614 | { | |
9096809b | 615 | int ok = 1; |
ece9304c RL |
616 | size_t i; |
617 | size_t l; | |
618 | ||
619 | if (!ossl_assert(ctx != NULL)) { | |
620 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
621 | return 0; | |
622 | } | |
623 | ||
624 | if (ctx->decoder_insts == NULL) | |
625 | return 1; | |
626 | ||
48b62fb3 | 627 | l = OSSL_DECODER_CTX_get_num_decoders(ctx); |
ece9304c RL |
628 | for (i = 0; i < l; i++) { |
629 | OSSL_DECODER_INSTANCE *decoder_inst = | |
630 | sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, i); | |
48b62fb3 RL |
631 | OSSL_DECODER *decoder = |
632 | OSSL_DECODER_INSTANCE_get_decoder(decoder_inst); | |
633 | OSSL_DECODER *decoderctx = | |
634 | OSSL_DECODER_INSTANCE_get_decoder_ctx(decoder_inst); | |
ece9304c | 635 | |
48b62fb3 | 636 | if (decoderctx == NULL || decoder->set_ctx_params == NULL) |
ece9304c | 637 | continue; |
48b62fb3 | 638 | if (!decoder->set_ctx_params(decoderctx, params)) |
9096809b | 639 | ok = 0; |
ece9304c | 640 | } |
9096809b | 641 | return ok; |
ece9304c RL |
642 | } |
643 | ||
ece9304c RL |
644 | void OSSL_DECODER_CTX_free(OSSL_DECODER_CTX *ctx) |
645 | { | |
646 | if (ctx != NULL) { | |
647 | if (ctx->cleanup != NULL) | |
648 | ctx->cleanup(ctx->construct_data); | |
649 | sk_OSSL_DECODER_INSTANCE_pop_free(ctx->decoder_insts, | |
48b62fb3 | 650 | ossl_decoder_instance_free); |
a517edec | 651 | ossl_pw_clear_passphrase_data(&ctx->pwdata); |
ece9304c RL |
652 | OPENSSL_free(ctx); |
653 | } | |
654 | } |