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4c2883a9 RL |
1 | /* |
2 | * Copyright 2019 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_numbers.h> | |
ac1055ef | 12 | #include <openssl/params.h> |
4c2883a9 RL |
13 | #include <openssl/opensslv.h> |
14 | #include "internal/cryptlib.h" | |
c41f3ae0 | 15 | #include "internal/nelem.h" |
4c2883a9 RL |
16 | #include "internal/thread_once.h" |
17 | #include "internal/provider.h" | |
18 | #include "internal/refcount.h" | |
c41f3ae0 RL |
19 | #include "provider_local.h" |
20 | ||
21 | static OSSL_PROVIDER *provider_new(const char *name, | |
22 | OSSL_provider_init_fn *init_function); | |
4c2883a9 RL |
23 | |
24 | /*- | |
25 | * Provider Object structure | |
26 | * ========================= | |
27 | */ | |
28 | ||
ac1055ef RL |
29 | typedef struct { |
30 | char *name; | |
31 | char *value; | |
32 | } INFOPAIR; | |
33 | DEFINE_STACK_OF(INFOPAIR) | |
34 | ||
4c2883a9 RL |
35 | struct provider_store_st; /* Forward declaration */ |
36 | ||
37 | struct ossl_provider_st { | |
38 | /* Flag bits */ | |
39 | unsigned int flag_initialized:1; | |
e55008a9 | 40 | unsigned int flag_fallback:1; |
4c2883a9 RL |
41 | |
42 | /* OpenSSL library side data */ | |
43 | CRYPTO_REF_COUNT refcnt; | |
085bef9f | 44 | CRYPTO_RWLOCK *refcnt_lock; /* For the ref counter */ |
4c2883a9 | 45 | char *name; |
ac1055ef | 46 | char *path; |
4c2883a9 RL |
47 | DSO *module; |
48 | OSSL_provider_init_fn *init_function; | |
ac1055ef | 49 | STACK_OF(INFOPAIR) *parameters; |
e55008a9 | 50 | struct provider_store_st *store; /* The store this instance belongs to */ |
4c2883a9 RL |
51 | |
52 | /* Provider side functions */ | |
53 | OSSL_provider_teardown_fn *teardown; | |
54 | OSSL_provider_get_param_types_fn *get_param_types; | |
55 | OSSL_provider_get_params_fn *get_params; | |
099bd339 | 56 | OSSL_provider_query_operation_fn *query_operation; |
4c2883a9 RL |
57 | }; |
58 | DEFINE_STACK_OF(OSSL_PROVIDER) | |
59 | ||
60 | static int ossl_provider_cmp(const OSSL_PROVIDER * const *a, | |
61 | const OSSL_PROVIDER * const *b) | |
62 | { | |
63 | return strcmp((*a)->name, (*b)->name); | |
64 | } | |
65 | ||
66 | /*- | |
67 | * Provider Object store | |
68 | * ===================== | |
69 | * | |
70 | * The Provider Object store is a library context object, and therefore needs | |
71 | * an index. | |
72 | */ | |
73 | ||
74 | struct provider_store_st { | |
75 | STACK_OF(OSSL_PROVIDER) *providers; | |
76 | CRYPTO_RWLOCK *lock; | |
e55008a9 | 77 | unsigned int use_fallbacks:1; |
4c2883a9 RL |
78 | }; |
79 | static int provider_store_index = -1; | |
80 | ||
81 | static void provider_store_free(void *vstore) | |
82 | { | |
83 | struct provider_store_st *store = vstore; | |
84 | ||
85 | if (store == NULL) | |
86 | return; | |
87 | sk_OSSL_PROVIDER_pop_free(store->providers, ossl_provider_free); | |
88 | CRYPTO_THREAD_lock_free(store->lock); | |
89 | OPENSSL_free(store); | |
90 | } | |
91 | ||
92 | static void *provider_store_new(void) | |
93 | { | |
94 | struct provider_store_st *store = OPENSSL_zalloc(sizeof(*store)); | |
c41f3ae0 | 95 | const struct predefined_providers_st *p = NULL; |
4c2883a9 RL |
96 | |
97 | if (store == NULL | |
98 | || (store->providers = sk_OSSL_PROVIDER_new(ossl_provider_cmp)) == NULL | |
99 | || (store->lock = CRYPTO_THREAD_lock_new()) == NULL) { | |
100 | provider_store_free(store); | |
e55008a9 | 101 | return NULL; |
4c2883a9 | 102 | } |
e55008a9 | 103 | store->use_fallbacks = 1; |
c41f3ae0 RL |
104 | |
105 | for (p = predefined_providers; p->name != NULL; p++) { | |
106 | OSSL_PROVIDER *prov = NULL; | |
107 | ||
108 | /* | |
109 | * We use the internal constructor directly here, | |
110 | * otherwise we get a call loop | |
111 | */ | |
112 | prov = provider_new(p->name, p->init); | |
113 | ||
114 | if (prov == NULL | |
115 | || sk_OSSL_PROVIDER_push(store->providers, prov) == 0) { | |
116 | ossl_provider_free(prov); | |
117 | provider_store_free(store); | |
118 | CRYPTOerr(CRYPTO_F_PROVIDER_STORE_NEW, ERR_R_INTERNAL_ERROR); | |
119 | return NULL; | |
120 | } | |
121 | prov->store = store; | |
122 | if(p->is_fallback) | |
123 | ossl_provider_set_fallback(prov); | |
124 | } | |
125 | ||
4c2883a9 RL |
126 | return store; |
127 | } | |
128 | ||
129 | static const OPENSSL_CTX_METHOD provider_store_method = { | |
130 | provider_store_new, | |
131 | provider_store_free, | |
132 | }; | |
133 | ||
134 | static CRYPTO_ONCE provider_store_init_flag = CRYPTO_ONCE_STATIC_INIT; | |
135 | DEFINE_RUN_ONCE_STATIC(do_provider_store_init) | |
136 | { | |
137 | return OPENSSL_init_crypto(0, NULL) | |
138 | && (provider_store_index = | |
139 | openssl_ctx_new_index(&provider_store_method)) != -1; | |
140 | } | |
141 | ||
142 | ||
143 | static struct provider_store_st *get_provider_store(OPENSSL_CTX *libctx) | |
144 | { | |
145 | struct provider_store_st *store = NULL; | |
146 | ||
147 | if (!RUN_ONCE(&provider_store_init_flag, do_provider_store_init)) | |
148 | return NULL; | |
149 | ||
150 | store = openssl_ctx_get_data(libctx, provider_store_index); | |
151 | if (store == NULL) | |
152 | CRYPTOerr(CRYPTO_F_GET_PROVIDER_STORE, ERR_R_INTERNAL_ERROR); | |
153 | return store; | |
154 | } | |
155 | ||
4c2883a9 RL |
156 | OSSL_PROVIDER *ossl_provider_find(OPENSSL_CTX *libctx, const char *name) |
157 | { | |
158 | struct provider_store_st *store = NULL; | |
159 | OSSL_PROVIDER *prov = NULL; | |
160 | ||
161 | if ((store = get_provider_store(libctx)) != NULL) { | |
162 | OSSL_PROVIDER tmpl = { 0, }; | |
163 | int i; | |
164 | ||
165 | tmpl.name = (char *)name; | |
166 | CRYPTO_THREAD_write_lock(store->lock); | |
167 | if ((i = sk_OSSL_PROVIDER_find(store->providers, &tmpl)) == -1 | |
168 | || (prov = sk_OSSL_PROVIDER_value(store->providers, i)) == NULL | |
169 | || !ossl_provider_upref(prov)) | |
170 | prov = NULL; | |
171 | CRYPTO_THREAD_unlock(store->lock); | |
172 | } | |
173 | ||
174 | return prov; | |
175 | } | |
176 | ||
c41f3ae0 RL |
177 | /*- |
178 | * Provider Object methods | |
179 | * ======================= | |
180 | */ | |
181 | ||
182 | static OSSL_PROVIDER *provider_new(const char *name, | |
183 | OSSL_provider_init_fn *init_function) | |
184 | { | |
185 | OSSL_PROVIDER *prov = NULL; | |
186 | ||
187 | if ((prov = OPENSSL_zalloc(sizeof(*prov))) == NULL | |
188 | #ifndef HAVE_ATOMICS | |
189 | || (prov->refcnt_lock = CRYPTO_THREAD_lock_new()) == NULL | |
190 | #endif | |
191 | || !ossl_provider_upref(prov) /* +1 One reference to be returned */ | |
192 | || (prov->name = OPENSSL_strdup(name)) == NULL) { | |
193 | ossl_provider_free(prov); | |
194 | CRYPTOerr(CRYPTO_F_PROVIDER_NEW, ERR_R_MALLOC_FAILURE); | |
195 | return NULL; | |
196 | } | |
197 | ||
198 | prov->init_function = init_function; | |
199 | return prov; | |
200 | } | |
201 | ||
202 | int ossl_provider_upref(OSSL_PROVIDER *prov) | |
203 | { | |
204 | int ref = 0; | |
205 | ||
206 | CRYPTO_UP_REF(&prov->refcnt, &ref, prov->refcnt_lock); | |
207 | return ref; | |
208 | } | |
209 | ||
4c2883a9 RL |
210 | OSSL_PROVIDER *ossl_provider_new(OPENSSL_CTX *libctx, const char *name, |
211 | OSSL_provider_init_fn *init_function) | |
212 | { | |
213 | struct provider_store_st *store = NULL; | |
214 | OSSL_PROVIDER *prov = NULL; | |
215 | ||
216 | if ((store = get_provider_store(libctx)) == NULL) | |
217 | return NULL; | |
218 | ||
219 | if ((prov = ossl_provider_find(libctx, name)) != NULL) { /* refcount +1 */ | |
220 | ossl_provider_free(prov); /* refcount -1 */ | |
221 | CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_NEW, | |
222 | CRYPTO_R_PROVIDER_ALREADY_EXISTS); | |
223 | ERR_add_error_data(2, "name=", name); | |
224 | return NULL; | |
225 | } | |
226 | ||
c41f3ae0 RL |
227 | /* provider_new() generates an error, so no need here */ |
228 | if ((prov = provider_new(name, init_function)) == NULL) | |
4c2883a9 | 229 | return NULL; |
4c2883a9 RL |
230 | |
231 | CRYPTO_THREAD_write_lock(store->lock); | |
232 | if (!ossl_provider_upref(prov)) { /* +1 One reference for the store */ | |
233 | ossl_provider_free(prov); /* -1 Reference that was to be returned */ | |
234 | prov = NULL; | |
235 | } else if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0) { | |
236 | ossl_provider_free(prov); /* -1 Store reference */ | |
237 | ossl_provider_free(prov); /* -1 Reference that was to be returned */ | |
238 | prov = NULL; | |
e55008a9 RL |
239 | } else { |
240 | prov->store = store; | |
4c2883a9 RL |
241 | } |
242 | CRYPTO_THREAD_unlock(store->lock); | |
243 | ||
244 | if (prov == NULL) | |
245 | CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_NEW, ERR_R_MALLOC_FAILURE); | |
246 | ||
247 | /* | |
248 | * At this point, the provider is only partially "loaded". To be | |
249 | * fully "loaded", ossl_provider_activate() must also be called. | |
250 | */ | |
251 | ||
252 | return prov; | |
253 | } | |
254 | ||
ac1055ef RL |
255 | static void free_infopair(INFOPAIR *pair) |
256 | { | |
257 | OPENSSL_free(pair->name); | |
258 | OPENSSL_free(pair->value); | |
259 | OPENSSL_free(pair); | |
260 | } | |
261 | ||
4c2883a9 RL |
262 | void ossl_provider_free(OSSL_PROVIDER *prov) |
263 | { | |
264 | if (prov != NULL) { | |
265 | int ref = 0; | |
266 | ||
085bef9f | 267 | CRYPTO_DOWN_REF(&prov->refcnt, &ref, prov->refcnt_lock); |
4c2883a9 RL |
268 | |
269 | /* | |
e55008a9 RL |
270 | * When the refcount drops below two, the store is the only |
271 | * possible reference, or it has already been taken away from | |
272 | * the store (this may happen if a provider was activated | |
273 | * because it's a fallback, but isn't currently used) | |
4c2883a9 RL |
274 | * When that happens, the provider is inactivated. |
275 | */ | |
e55008a9 | 276 | if (ref < 2 && prov->flag_initialized) { |
4c2883a9 RL |
277 | if (prov->teardown != NULL) |
278 | prov->teardown(); | |
279 | prov->flag_initialized = 0; | |
280 | } | |
281 | ||
282 | /* | |
283 | * When the refcount drops to zero, it has been taken out of | |
284 | * the store. All we have to do here is clean it out. | |
285 | */ | |
286 | if (ref == 0) { | |
287 | DSO_free(prov->module); | |
288 | OPENSSL_free(prov->name); | |
ac1055ef RL |
289 | OPENSSL_free(prov->path); |
290 | sk_INFOPAIR_pop_free(prov->parameters, free_infopair); | |
085bef9f RL |
291 | #ifndef HAVE_ATOMICS |
292 | CRYPTO_THREAD_lock_free(prov->refcnt_lock); | |
293 | #endif | |
4c2883a9 RL |
294 | OPENSSL_free(prov); |
295 | } | |
296 | } | |
297 | } | |
298 | ||
ac1055ef RL |
299 | /* Setters */ |
300 | int ossl_provider_set_module_path(OSSL_PROVIDER *prov, const char *module_path) | |
301 | { | |
302 | OPENSSL_free(prov->path); | |
303 | if (module_path == NULL) | |
304 | return 1; | |
305 | if ((prov->path = OPENSSL_strdup(module_path)) != NULL) | |
306 | return 1; | |
307 | CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_SET_MODULE_PATH, ERR_R_MALLOC_FAILURE); | |
308 | return 0; | |
309 | } | |
310 | ||
311 | int ossl_provider_add_parameter(OSSL_PROVIDER *prov, | |
312 | const char *name, const char *value) | |
313 | { | |
314 | INFOPAIR *pair = NULL; | |
315 | ||
316 | if ((pair = OPENSSL_zalloc(sizeof(*pair))) != NULL | |
317 | && (prov->parameters != NULL | |
318 | || (prov->parameters = sk_INFOPAIR_new_null()) != NULL) | |
319 | && (pair->name = OPENSSL_strdup(name)) != NULL | |
320 | && (pair->value = OPENSSL_strdup(value)) != NULL | |
321 | && sk_INFOPAIR_push(prov->parameters, pair) > 0) | |
322 | return 1; | |
323 | ||
324 | if (pair != NULL) { | |
325 | OPENSSL_free(pair->name); | |
326 | OPENSSL_free(pair->value); | |
327 | OPENSSL_free(pair); | |
328 | } | |
329 | CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_ADD_PARAMETER, ERR_R_MALLOC_FAILURE); | |
330 | return 0; | |
331 | } | |
332 | ||
4c2883a9 RL |
333 | /* |
334 | * Provider activation. | |
335 | * | |
336 | * What "activation" means depends on the provider form; for built in | |
337 | * providers (in the library or the application alike), the provider | |
338 | * can already be considered to be loaded, all that's needed is to | |
339 | * initialize it. However, for dynamically loadable provider modules, | |
340 | * we must first load that module. | |
341 | * | |
342 | * Built in modules are distinguished from dynamically loaded modules | |
343 | * with an already assigned init function. | |
344 | */ | |
345 | static const OSSL_DISPATCH *core_dispatch; /* Define further down */ | |
346 | ||
e55008a9 RL |
347 | /* |
348 | * Internal version that doesn't affect the store flags, and thereby avoid | |
349 | * locking. Direct callers must remember to set the store flags when | |
350 | * appropriate | |
351 | */ | |
352 | static int provider_activate(OSSL_PROVIDER *prov) | |
4c2883a9 RL |
353 | { |
354 | const OSSL_DISPATCH *provider_dispatch = NULL; | |
355 | ||
356 | if (prov->flag_initialized) | |
357 | return 1; | |
358 | ||
359 | /* | |
360 | * If the init function isn't set, it indicates that this provider is | |
361 | * a loadable module. | |
362 | */ | |
363 | if (prov->init_function == NULL) { | |
364 | if (prov->module == NULL) { | |
ac1055ef RL |
365 | char *allocated_path = NULL; |
366 | const char *module_path = NULL; | |
367 | char *merged_path = NULL; | |
4c2883a9 RL |
368 | const char *load_dir = ossl_safe_getenv("OPENSSL_MODULES"); |
369 | ||
370 | if ((prov->module = DSO_new()) == NULL) { | |
371 | /* DSO_new() generates an error already */ | |
372 | return 0; | |
373 | } | |
374 | ||
375 | if (load_dir == NULL) | |
376 | load_dir = MODULESDIR; | |
377 | ||
378 | DSO_ctrl(prov->module, DSO_CTRL_SET_FLAGS, | |
379 | DSO_FLAG_NAME_TRANSLATION_EXT_ONLY, NULL); | |
ac1055ef RL |
380 | |
381 | module_path = prov->path; | |
382 | if (module_path == NULL) | |
383 | module_path = allocated_path = | |
384 | DSO_convert_filename(prov->module, prov->name); | |
385 | if (module_path != NULL) | |
386 | merged_path = DSO_merge(prov->module, module_path, load_dir); | |
387 | ||
388 | if (merged_path == NULL | |
389 | || (DSO_load(prov->module, merged_path, NULL, 0)) == NULL) { | |
4c2883a9 RL |
390 | DSO_free(prov->module); |
391 | prov->module = NULL; | |
392 | } | |
393 | ||
ac1055ef RL |
394 | OPENSSL_free(merged_path); |
395 | OPENSSL_free(allocated_path); | |
4c2883a9 RL |
396 | } |
397 | ||
398 | if (prov->module != NULL) | |
399 | prov->init_function = (OSSL_provider_init_fn *) | |
400 | DSO_bind_func(prov->module, "OSSL_provider_init"); | |
401 | } | |
402 | ||
403 | if (prov->init_function == NULL | |
404 | || !prov->init_function(prov, core_dispatch, &provider_dispatch)) { | |
e55008a9 | 405 | CRYPTOerr(CRYPTO_F_PROVIDER_ACTIVATE, ERR_R_INIT_FAIL); |
4c2883a9 RL |
406 | ERR_add_error_data(2, "name=", prov->name); |
407 | DSO_free(prov->module); | |
408 | prov->module = NULL; | |
409 | return 0; | |
410 | } | |
411 | ||
412 | for (; provider_dispatch->function_id != 0; provider_dispatch++) { | |
413 | switch (provider_dispatch->function_id) { | |
414 | case OSSL_FUNC_PROVIDER_TEARDOWN: | |
415 | prov->teardown = | |
416 | OSSL_get_provider_teardown(provider_dispatch); | |
417 | break; | |
418 | case OSSL_FUNC_PROVIDER_GET_PARAM_TYPES: | |
419 | prov->get_param_types = | |
420 | OSSL_get_provider_get_param_types(provider_dispatch); | |
421 | break; | |
422 | case OSSL_FUNC_PROVIDER_GET_PARAMS: | |
423 | prov->get_params = | |
424 | OSSL_get_provider_get_params(provider_dispatch); | |
425 | break; | |
099bd339 RL |
426 | case OSSL_FUNC_PROVIDER_QUERY_OPERATION: |
427 | prov->query_operation = | |
428 | OSSL_get_provider_query_operation(provider_dispatch); | |
429 | break; | |
4c2883a9 RL |
430 | } |
431 | } | |
432 | ||
433 | /* With this flag set, this provider has become fully "loaded". */ | |
434 | prov->flag_initialized = 1; | |
435 | ||
436 | return 1; | |
437 | } | |
438 | ||
e55008a9 RL |
439 | int ossl_provider_activate(OSSL_PROVIDER *prov) |
440 | { | |
441 | if (provider_activate(prov)) { | |
442 | CRYPTO_THREAD_write_lock(prov->store->lock); | |
443 | prov->store->use_fallbacks = 0; | |
444 | CRYPTO_THREAD_unlock(prov->store->lock); | |
445 | return 1; | |
446 | } | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
451 | ||
452 | static int provider_forall_loaded(struct provider_store_st *store, | |
453 | int *found_activated, | |
454 | int (*cb)(OSSL_PROVIDER *provider, | |
455 | void *cbdata), | |
456 | void *cbdata) | |
457 | { | |
458 | int i; | |
459 | int ret = 1; | |
460 | int num_provs = sk_OSSL_PROVIDER_num(store->providers); | |
461 | ||
462 | if (found_activated != NULL) | |
463 | *found_activated = 0; | |
464 | for (i = 0; i < num_provs; i++) { | |
465 | OSSL_PROVIDER *prov = | |
466 | sk_OSSL_PROVIDER_value(store->providers, i); | |
467 | ||
468 | if (prov->flag_initialized) { | |
469 | if (found_activated != NULL) | |
470 | *found_activated = 1; | |
471 | if (!(ret = cb(prov, cbdata))) | |
472 | break; | |
473 | } | |
474 | } | |
475 | ||
476 | return ret; | |
477 | } | |
478 | ||
85e2417c RL |
479 | int ossl_provider_forall_loaded(OPENSSL_CTX *ctx, |
480 | int (*cb)(OSSL_PROVIDER *provider, | |
481 | void *cbdata), | |
482 | void *cbdata) | |
483 | { | |
484 | int ret = 1; | |
485 | int i; | |
486 | struct provider_store_st *store = get_provider_store(ctx); | |
487 | ||
488 | if (store != NULL) { | |
e55008a9 RL |
489 | int found_activated = 0; |
490 | ||
85e2417c | 491 | CRYPTO_THREAD_read_lock(store->lock); |
e55008a9 | 492 | ret = provider_forall_loaded(store, &found_activated, cb, cbdata); |
85e2417c | 493 | |
e55008a9 RL |
494 | /* |
495 | * If there's nothing activated ever in this store, try to activate | |
496 | * all fallbacks. | |
497 | */ | |
498 | if (!found_activated && store->use_fallbacks) { | |
499 | int num_provs = sk_OSSL_PROVIDER_num(store->providers); | |
500 | int activated_fallback_count = 0; | |
501 | ||
502 | for (i = 0; i < num_provs; i++) { | |
503 | OSSL_PROVIDER *prov = | |
504 | sk_OSSL_PROVIDER_value(store->providers, i); | |
505 | ||
506 | /* | |
507 | * Note that we don't care if the activation succeeds or | |
508 | * not. If it doesn't succeed, then the next loop will | |
509 | * fail anyway. | |
510 | */ | |
511 | if (prov->flag_fallback) { | |
512 | activated_fallback_count++; | |
513 | provider_activate(prov); | |
514 | } | |
515 | } | |
516 | ||
517 | if (activated_fallback_count > 0) { | |
518 | /* | |
519 | * We assume that all fallbacks have been added to the store | |
520 | * before any fallback is activated. | |
521 | * TODO: We may have to reconsider this, IF we find ourselves | |
522 | * adding fallbacks after any previous fallback has been | |
523 | * activated. | |
524 | */ | |
525 | store->use_fallbacks = 0; | |
526 | ||
527 | /* | |
528 | * Now that we've activated available fallbacks, try a | |
529 | * second sweep | |
530 | */ | |
531 | ret = provider_forall_loaded(store, NULL, cb, cbdata); | |
532 | } | |
85e2417c RL |
533 | } |
534 | CRYPTO_THREAD_unlock(store->lock); | |
535 | } | |
536 | ||
537 | return ret; | |
538 | } | |
539 | ||
e55008a9 RL |
540 | /* Setters of Provider Object data */ |
541 | int ossl_provider_set_fallback(OSSL_PROVIDER *prov) | |
542 | { | |
543 | if (prov == NULL) | |
544 | return 0; | |
545 | ||
546 | prov->flag_fallback = 1; | |
547 | return 1; | |
548 | } | |
549 | ||
4c2883a9 RL |
550 | /* Getters of Provider Object data */ |
551 | const char *ossl_provider_name(OSSL_PROVIDER *prov) | |
552 | { | |
553 | return prov->name; | |
554 | } | |
555 | ||
556 | const DSO *ossl_provider_dso(OSSL_PROVIDER *prov) | |
557 | { | |
558 | return prov->module; | |
559 | } | |
560 | ||
561 | const char *ossl_provider_module_name(OSSL_PROVIDER *prov) | |
562 | { | |
563 | return DSO_get_filename(prov->module); | |
564 | } | |
565 | ||
566 | const char *ossl_provider_module_path(OSSL_PROVIDER *prov) | |
567 | { | |
568 | /* FIXME: Ensure it's a full path */ | |
569 | return DSO_get_filename(prov->module); | |
570 | } | |
571 | ||
572 | /* Wrappers around calls to the provider */ | |
573 | void ossl_provider_teardown(const OSSL_PROVIDER *prov) | |
574 | { | |
575 | if (prov->teardown != NULL) | |
576 | prov->teardown(); | |
577 | } | |
578 | ||
579 | const OSSL_ITEM *ossl_provider_get_param_types(const OSSL_PROVIDER *prov) | |
580 | { | |
581 | return prov->get_param_types == NULL ? NULL : prov->get_param_types(prov); | |
582 | } | |
583 | ||
584 | int ossl_provider_get_params(const OSSL_PROVIDER *prov, | |
585 | const OSSL_PARAM params[]) | |
586 | { | |
587 | return prov->get_params == NULL ? 0 : prov->get_params(prov, params); | |
588 | } | |
589 | ||
099bd339 RL |
590 | |
591 | const OSSL_ALGORITHM *ossl_provider_query_operation(const OSSL_PROVIDER *prov, | |
592 | int operation_id, | |
593 | int *no_cache) | |
594 | { | |
595 | return prov->query_operation(prov, operation_id, no_cache); | |
596 | } | |
597 | ||
4c2883a9 RL |
598 | /*- |
599 | * Core functions for the provider | |
600 | * =============================== | |
601 | * | |
602 | * This is the set of functions that the core makes available to the provider | |
603 | */ | |
604 | ||
605 | /* | |
606 | * This returns a list of Provider Object parameters with their types, for | |
607 | * discovery. We do not expect that many providers will use this, but one | |
608 | * never knows. | |
609 | */ | |
610 | static const OSSL_ITEM param_types[] = { | |
e2146e12 RL |
611 | { OSSL_PARAM_UTF8_PTR, "openssl-version" }, |
612 | { OSSL_PARAM_UTF8_PTR, "provider-name" }, | |
4c2883a9 RL |
613 | { 0, NULL } |
614 | }; | |
615 | ||
616 | static const OSSL_ITEM *core_get_param_types(const OSSL_PROVIDER *prov) | |
617 | { | |
618 | return param_types; | |
619 | } | |
620 | ||
621 | static int core_get_params(const OSSL_PROVIDER *prov, const OSSL_PARAM params[]) | |
622 | { | |
623 | int i; | |
ac1055ef | 624 | const OSSL_PARAM *p; |
4c2883a9 | 625 | |
ac1055ef RL |
626 | if ((p = OSSL_PARAM_locate(params, "openssl-version")) != NULL) |
627 | OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR); | |
628 | if ((p = OSSL_PARAM_locate(params, "provider-name")) != NULL) | |
629 | OSSL_PARAM_set_utf8_ptr(p, prov->name); | |
630 | ||
631 | if (prov->parameters == NULL) | |
632 | return 1; | |
633 | ||
634 | for (i = 0; i < sk_INFOPAIR_num(prov->parameters); i++) { | |
635 | INFOPAIR *pair = sk_INFOPAIR_value(prov->parameters, i); | |
636 | ||
637 | if ((p = OSSL_PARAM_locate(params, pair->name)) != NULL) | |
638 | OSSL_PARAM_set_utf8_ptr(p, pair->value); | |
4c2883a9 RL |
639 | } |
640 | ||
641 | return 1; | |
642 | } | |
643 | ||
644 | static const OSSL_DISPATCH core_dispatch_[] = { | |
645 | { OSSL_FUNC_CORE_GET_PARAM_TYPES, (void (*)(void))core_get_param_types }, | |
646 | { OSSL_FUNC_CORE_GET_PARAMS, (void (*)(void))core_get_params }, | |
647 | { 0, NULL } | |
648 | }; | |
649 | static const OSSL_DISPATCH *core_dispatch = core_dispatch_; |