Coverage Report

Created: 2025-06-13 06:58

/src/openssl31/crypto/provider_core.c
Line
Count
Source (jump to first uncovered line)
1
/*
2
 * Copyright 2019-2024 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 <assert.h>
11
#include <openssl/core.h>
12
#include <openssl/core_dispatch.h>
13
#include <openssl/core_names.h>
14
#include <openssl/provider.h>
15
#include <openssl/params.h>
16
#include <openssl/opensslv.h>
17
#include "crypto/cryptlib.h"
18
#ifndef FIPS_MODULE
19
#include "crypto/decoder.h" /* ossl_decoder_store_cache_flush */
20
#include "crypto/encoder.h" /* ossl_encoder_store_cache_flush */
21
#include "crypto/store.h" /* ossl_store_loader_store_cache_flush */
22
#endif
23
#include "crypto/evp.h" /* evp_method_store_cache_flush */
24
#include "crypto/rand.h"
25
#include "internal/nelem.h"
26
#include "internal/thread_once.h"
27
#include "internal/provider.h"
28
#include "internal/refcount.h"
29
#include "internal/bio.h"
30
#include "internal/core.h"
31
#include "provider_local.h"
32
#include "crypto/context.h"
33
#ifndef FIPS_MODULE
34
# include <openssl/self_test.h>
35
#endif
36
37
/*
38
 * This file defines and uses a number of different structures:
39
 *
40
 * OSSL_PROVIDER (provider_st): Used to represent all information related to a
41
 * single instance of a provider.
42
 *
43
 * provider_store_st: Holds information about the collection of providers that
44
 * are available within the current library context (OSSL_LIB_CTX). It also
45
 * holds configuration information about providers that could be loaded at some
46
 * future point.
47
 *
48
 * OSSL_PROVIDER_CHILD_CB: An instance of this structure holds the callbacks
49
 * that have been registered for a child library context and the associated
50
 * provider that registered those callbacks.
51
 *
52
 * Where a child library context exists then it has its own instance of the
53
 * provider store. Each provider that exists in the parent provider store, has
54
 * an associated child provider in the child library context's provider store.
55
 * As providers get activated or deactivated this needs to be mirrored in the
56
 * associated child providers.
57
 *
58
 * LOCKING
59
 * =======
60
 *
61
 * There are a number of different locks used in this file and it is important
62
 * to understand how they should be used in order to avoid deadlocks.
63
 *
64
 * Fields within a structure can often be "write once" on creation, and then
65
 * "read many". Creation of a structure is done by a single thread, and
66
 * therefore no lock is required for the "write once/read many" fields. It is
67
 * safe for multiple threads to read these fields without a lock, because they
68
 * will never be changed.
69
 *
70
 * However some fields may be changed after a structure has been created and
71
 * shared between multiple threads. Where this is the case a lock is required.
72
 *
73
 * The locks available are:
74
 *
75
 * The provider flag_lock: Used to control updates to the various provider
76
 * "flags" (flag_initialized and flag_activated) and associated
77
 * "counts" (activatecnt).
78
 *
79
 * The provider refcnt_lock: Only ever used to control updates to the provider
80
 * refcnt value.
81
 *
82
 * The provider optbits_lock: Used to control access to the provider's
83
 * operation_bits and operation_bits_sz fields.
84
 *
85
 * The store default_path_lock: Used to control access to the provider store's
86
 * default search path value (default_path)
87
 *
88
 * The store lock: Used to control the stack of provider's held within the
89
 * provider store, as well as the stack of registered child provider callbacks.
90
 *
91
 * As a general rule-of-thumb it is best to:
92
 *  - keep the scope of the code that is protected by a lock to the absolute
93
 *    minimum possible;
94
 *  - try to keep the scope of the lock to within a single function (i.e. avoid
95
 *    making calls to other functions while holding a lock);
96
 *  - try to only ever hold one lock at a time.
97
 *
98
 * Unfortunately, it is not always possible to stick to the above guidelines.
99
 * Where they are not adhered to there is always a danger of inadvertently
100
 * introducing the possibility of deadlock. The following rules MUST be adhered
101
 * to in order to avoid that:
102
 *  - Holding multiple locks at the same time is only allowed for the
103
 *    provider store lock, the provider flag_lock and the provider refcnt_lock.
104
 *  - When holding multiple locks they must be acquired in the following order of
105
 *    precedence:
106
 *        1) provider store lock
107
 *        2) provider flag_lock
108
 *        3) provider refcnt_lock
109
 *  - When releasing locks they must be released in the reverse order to which
110
 *    they were acquired
111
 *  - No locks may be held when making an upcall. NOTE: Some common functions
112
 *    can make upcalls as part of their normal operation. If you need to call
113
 *    some other function while holding a lock make sure you know whether it
114
 *    will make any upcalls or not. For example ossl_provider_up_ref() can call
115
 *    ossl_provider_up_ref_parent() which can call the c_prov_up_ref() upcall.
116
 *  - It is permissible to hold the store and flag locks when calling child
117
 *    provider callbacks. No other locks may be held during such callbacks.
118
 */
119
120
static OSSL_PROVIDER *provider_new(const char *name,
121
                                   OSSL_provider_init_fn *init_function,
122
                                   STACK_OF(INFOPAIR) *parameters);
123
124
/*-
125
 * Provider Object structure
126
 * =========================
127
 */
128
129
#ifndef FIPS_MODULE
130
typedef struct {
131
    OSSL_PROVIDER *prov;
132
    int (*create_cb)(const OSSL_CORE_HANDLE *provider, void *cbdata);
133
    int (*remove_cb)(const OSSL_CORE_HANDLE *provider, void *cbdata);
134
    int (*global_props_cb)(const char *props, void *cbdata);
135
    void *cbdata;
136
} OSSL_PROVIDER_CHILD_CB;
137
DEFINE_STACK_OF(OSSL_PROVIDER_CHILD_CB)
138
#endif
139
140
struct provider_store_st;        /* Forward declaration */
141
142
struct ossl_provider_st {
143
    /* Flag bits */
144
    unsigned int flag_initialized:1;
145
    unsigned int flag_activated:1;
146
147
    /* Getting and setting the flags require synchronization */
148
    CRYPTO_RWLOCK *flag_lock;
149
150
    /* OpenSSL library side data */
151
    CRYPTO_REF_COUNT refcnt;
152
    CRYPTO_RWLOCK *refcnt_lock;  /* For the ref counter */
153
    int activatecnt;
154
    char *name;
155
    char *path;
156
    DSO *module;
157
    OSSL_provider_init_fn *init_function;
158
    STACK_OF(INFOPAIR) *parameters;
159
    OSSL_LIB_CTX *libctx; /* The library context this instance is in */
160
    struct provider_store_st *store; /* The store this instance belongs to */
161
#ifndef FIPS_MODULE
162
    /*
163
     * In the FIPS module inner provider, this isn't needed, since the
164
     * error upcalls are always direct calls to the outer provider.
165
     */
166
    int error_lib;     /* ERR library number, one for each provider */
167
# ifndef OPENSSL_NO_ERR
168
    ERR_STRING_DATA *error_strings; /* Copy of what the provider gives us */
169
# endif
170
#endif
171
172
    /* Provider side functions */
173
    OSSL_FUNC_provider_teardown_fn *teardown;
174
    OSSL_FUNC_provider_gettable_params_fn *gettable_params;
175
    OSSL_FUNC_provider_get_params_fn *get_params;
176
    OSSL_FUNC_provider_get_capabilities_fn *get_capabilities;
177
    OSSL_FUNC_provider_self_test_fn *self_test;
178
    OSSL_FUNC_provider_query_operation_fn *query_operation;
179
    OSSL_FUNC_provider_unquery_operation_fn *unquery_operation;
180
181
    /*
182
     * Cache of bit to indicate of query_operation() has been called on
183
     * a specific operation or not.
184
     */
185
    unsigned char *operation_bits;
186
    size_t operation_bits_sz;
187
    CRYPTO_RWLOCK *opbits_lock;
188
189
#ifndef FIPS_MODULE
190
    /* Whether this provider is the child of some other provider */
191
    const OSSL_CORE_HANDLE *handle;
192
    unsigned int ischild:1;
193
#endif
194
195
    /* Provider side data */
196
    void *provctx;
197
    const OSSL_DISPATCH *dispatch;
198
};
199
DEFINE_STACK_OF(OSSL_PROVIDER)
200
201
static int ossl_provider_cmp(const OSSL_PROVIDER * const *a,
202
                             const OSSL_PROVIDER * const *b)
203
11
{
204
11
    return strcmp((*a)->name, (*b)->name);
205
11
}
206
207
/*-
208
 * Provider Object store
209
 * =====================
210
 *
211
 * The Provider Object store is a library context object, and therefore needs
212
 * an index.
213
 */
214
215
struct provider_store_st {
216
    OSSL_LIB_CTX *libctx;
217
    STACK_OF(OSSL_PROVIDER) *providers;
218
    STACK_OF(OSSL_PROVIDER_CHILD_CB) *child_cbs;
219
    CRYPTO_RWLOCK *default_path_lock;
220
    CRYPTO_RWLOCK *lock;
221
    char *default_path;
222
    OSSL_PROVIDER_INFO *provinfo;
223
    size_t numprovinfo;
224
    size_t provinfosz;
225
    unsigned int use_fallbacks:1;
226
    unsigned int freeing:1;
227
};
228
229
/*
230
 * provider_deactivate_free() is a wrapper around ossl_provider_deactivate()
231
 * and ossl_provider_free(), called as needed.
232
 * Since this is only called when the provider store is being emptied, we
233
 * don't need to care about any lock.
234
 */
235
static void provider_deactivate_free(OSSL_PROVIDER *prov)
236
103
{
237
103
    if (prov->flag_activated)
238
103
        ossl_provider_deactivate(prov, 1);
239
103
    ossl_provider_free(prov);
240
103
}
241
242
#ifndef FIPS_MODULE
243
static void ossl_provider_child_cb_free(OSSL_PROVIDER_CHILD_CB *cb)
244
0
{
245
0
    OPENSSL_free(cb);
246
0
}
247
#endif
248
249
static void infopair_free(INFOPAIR *pair)
250
0
{
251
0
    OPENSSL_free(pair->name);
252
0
    OPENSSL_free(pair->value);
253
0
    OPENSSL_free(pair);
254
0
}
255
256
static INFOPAIR *infopair_copy(const INFOPAIR *src)
257
0
{
258
0
    INFOPAIR *dest = OPENSSL_zalloc(sizeof(*dest));
259
260
0
    if (dest == NULL)
261
0
        return NULL;
262
0
    if (src->name != NULL) {
263
0
        dest->name = OPENSSL_strdup(src->name);
264
0
        if (dest->name == NULL)
265
0
            goto err;
266
0
    }
267
0
    if (src->value != NULL) {
268
0
        dest->value = OPENSSL_strdup(src->value);
269
0
        if (dest->value == NULL)
270
0
            goto err;
271
0
    }
272
0
    return dest;
273
0
 err:
274
0
    OPENSSL_free(dest->name);
275
0
    OPENSSL_free(dest);
276
0
    return NULL;
277
0
}
278
279
void ossl_provider_info_clear(OSSL_PROVIDER_INFO *info)
280
60
{
281
60
    OPENSSL_free(info->name);
282
60
    OPENSSL_free(info->path);
283
60
    sk_INFOPAIR_pop_free(info->parameters, infopair_free);
284
60
}
285
286
void ossl_provider_store_free(void *vstore)
287
99
{
288
99
    struct provider_store_st *store = vstore;
289
99
    size_t i;
290
291
99
    if (store == NULL)
292
0
        return;
293
99
    store->freeing = 1;
294
99
    OPENSSL_free(store->default_path);
295
99
    sk_OSSL_PROVIDER_pop_free(store->providers, provider_deactivate_free);
296
99
#ifndef FIPS_MODULE
297
99
    sk_OSSL_PROVIDER_CHILD_CB_pop_free(store->child_cbs,
298
99
                                       ossl_provider_child_cb_free);
299
99
#endif
300
99
    CRYPTO_THREAD_lock_free(store->default_path_lock);
301
99
    CRYPTO_THREAD_lock_free(store->lock);
302
149
    for (i = 0; i < store->numprovinfo; i++)
303
50
        ossl_provider_info_clear(&store->provinfo[i]);
304
99
    OPENSSL_free(store->provinfo);
305
99
    OPENSSL_free(store);
306
99
}
307
308
void *ossl_provider_store_new(OSSL_LIB_CTX *ctx)
309
151
{
310
151
    struct provider_store_st *store = OPENSSL_zalloc(sizeof(*store));
311
312
151
    if (store == NULL
313
151
        || (store->providers = sk_OSSL_PROVIDER_new(ossl_provider_cmp)) == NULL
314
151
        || (store->default_path_lock = CRYPTO_THREAD_lock_new()) == NULL
315
151
#ifndef FIPS_MODULE
316
151
        || (store->child_cbs = sk_OSSL_PROVIDER_CHILD_CB_new_null()) == NULL
317
151
#endif
318
151
        || (store->lock = CRYPTO_THREAD_lock_new()) == NULL) {
319
0
        ossl_provider_store_free(store);
320
0
        return NULL;
321
0
    }
322
151
    store->libctx = ctx;
323
151
    store->use_fallbacks = 1;
324
325
151
    return store;
326
151
}
327
328
static struct provider_store_st *get_provider_store(OSSL_LIB_CTX *libctx)
329
6.37M
{
330
6.37M
    struct provider_store_st *store = NULL;
331
332
6.37M
    store = ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_PROVIDER_STORE_INDEX);
333
6.37M
    if (store == NULL)
334
6.37M
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
335
6.37M
    return store;
336
6.37M
}
337
338
int ossl_provider_disable_fallback_loading(OSSL_LIB_CTX *libctx)
339
0
{
340
0
    struct provider_store_st *store;
341
342
0
    if ((store = get_provider_store(libctx)) != NULL) {
343
0
        if (!CRYPTO_THREAD_write_lock(store->lock))
344
0
            return 0;
345
0
        store->use_fallbacks = 0;
346
0
        CRYPTO_THREAD_unlock(store->lock);
347
0
        return 1;
348
0
    }
349
0
    return 0;
350
0
}
351
352
60
#define BUILTINS_BLOCK_SIZE     10
353
354
int ossl_provider_info_add_to_store(OSSL_LIB_CTX *libctx,
355
                                    OSSL_PROVIDER_INFO *entry)
356
60
{
357
60
    struct provider_store_st *store = get_provider_store(libctx);
358
60
    int ret = 0;
359
360
60
    if (entry->name == NULL) {
361
0
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
362
0
        return 0;
363
0
    }
364
365
60
    if (store == NULL) {
366
0
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
367
0
        return 0;
368
0
    }
369
370
60
    if (!CRYPTO_THREAD_write_lock(store->lock))
371
0
        return 0;
372
60
    if (store->provinfosz == 0) {
373
60
        store->provinfo = OPENSSL_zalloc(sizeof(*store->provinfo)
374
60
                                         * BUILTINS_BLOCK_SIZE);
375
60
        if (store->provinfo == NULL) {
376
0
            ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
377
0
            goto err;
378
0
        }
379
60
        store->provinfosz = BUILTINS_BLOCK_SIZE;
380
60
    } else if (store->numprovinfo == store->provinfosz) {
381
0
        OSSL_PROVIDER_INFO *tmpbuiltins;
382
0
        size_t newsz = store->provinfosz + BUILTINS_BLOCK_SIZE;
383
384
0
        tmpbuiltins = OPENSSL_realloc(store->provinfo,
385
0
                                      sizeof(*store->provinfo) * newsz);
386
0
        if (tmpbuiltins == NULL) {
387
0
            ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
388
0
            goto err;
389
0
        }
390
0
        store->provinfo = tmpbuiltins;
391
0
        store->provinfosz = newsz;
392
0
    }
393
60
    store->provinfo[store->numprovinfo] = *entry;
394
60
    store->numprovinfo++;
395
396
60
    ret = 1;
397
60
 err:
398
60
    CRYPTO_THREAD_unlock(store->lock);
399
60
    return ret;
400
60
}
401
402
OSSL_PROVIDER *ossl_provider_find(OSSL_LIB_CTX *libctx, const char *name,
403
                                  ossl_unused int noconfig)
404
71
{
405
71
    struct provider_store_st *store = NULL;
406
71
    OSSL_PROVIDER *prov = NULL;
407
408
71
    if ((store = get_provider_store(libctx)) != NULL) {
409
71
        OSSL_PROVIDER tmpl = { 0, };
410
71
        int i;
411
412
71
#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_AUTOLOAD_CONFIG)
413
        /*
414
         * Make sure any providers are loaded from config before we try to find
415
         * them.
416
         */
417
71
        if (!noconfig) {
418
60
            if (ossl_lib_ctx_is_default(libctx))
419
60
                OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
420
60
        }
421
71
#endif
422
423
71
        tmpl.name = (char *)name;
424
        /*
425
         * A "find" operation can sort the stack, and therefore a write lock is
426
         * required.
427
         */
428
71
        if (!CRYPTO_THREAD_write_lock(store->lock))
429
0
            return NULL;
430
71
        if ((i = sk_OSSL_PROVIDER_find(store->providers, &tmpl)) != -1)
431
11
            prov = sk_OSSL_PROVIDER_value(store->providers, i);
432
71
        CRYPTO_THREAD_unlock(store->lock);
433
71
        if (prov != NULL && !ossl_provider_up_ref(prov))
434
0
            prov = NULL;
435
71
    }
436
437
71
    return prov;
438
71
}
439
440
/*-
441
 * Provider Object methods
442
 * =======================
443
 */
444
445
static OSSL_PROVIDER *provider_new(const char *name,
446
                                   OSSL_provider_init_fn *init_function,
447
                                   STACK_OF(INFOPAIR) *parameters)
448
34
{
449
34
    OSSL_PROVIDER *prov = NULL;
450
451
34
    if ((prov = OPENSSL_zalloc(sizeof(*prov))) == NULL
452
#ifndef HAVE_ATOMICS
453
        || (prov->refcnt_lock = CRYPTO_THREAD_lock_new()) == NULL
454
#endif
455
34
       ) {
456
0
        OPENSSL_free(prov);
457
0
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
458
0
        return NULL;
459
0
    }
460
461
34
    prov->refcnt = 1; /* 1 One reference to be returned */
462
463
34
    if ((prov->opbits_lock = CRYPTO_THREAD_lock_new()) == NULL
464
34
        || (prov->flag_lock = CRYPTO_THREAD_lock_new()) == NULL
465
34
        || (prov->name = OPENSSL_strdup(name)) == NULL
466
34
        || (prov->parameters = sk_INFOPAIR_deep_copy(parameters,
467
34
                                                     infopair_copy,
468
34
                                                     infopair_free)) == NULL) {
469
0
        ossl_provider_free(prov);
470
0
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
471
0
        return NULL;
472
0
    }
473
474
34
    prov->init_function = init_function;
475
476
34
    return prov;
477
34
}
478
479
int ossl_provider_up_ref(OSSL_PROVIDER *prov)
480
10.1k
{
481
10.1k
    int ref = 0;
482
483
10.1k
    if (CRYPTO_UP_REF(&prov->refcnt, &ref, prov->refcnt_lock) <= 0)
484
0
        return 0;
485
486
10.1k
#ifndef FIPS_MODULE
487
10.1k
    if (prov->ischild) {
488
0
        if (!ossl_provider_up_ref_parent(prov, 0)) {
489
0
            ossl_provider_free(prov);
490
0
            return 0;
491
0
        }
492
0
    }
493
10.1k
#endif
494
495
10.1k
    return ref;
496
10.1k
}
497
498
#ifndef FIPS_MODULE
499
static int provider_up_ref_intern(OSSL_PROVIDER *prov, int activate)
500
0
{
501
0
    if (activate)
502
0
        return ossl_provider_activate(prov, 1, 0);
503
504
0
    return ossl_provider_up_ref(prov);
505
0
}
506
507
static int provider_free_intern(OSSL_PROVIDER *prov, int deactivate)
508
0
{
509
0
    if (deactivate)
510
0
        return ossl_provider_deactivate(prov, 1);
511
512
0
    ossl_provider_free(prov);
513
0
    return 1;
514
0
}
515
#endif
516
517
/*
518
 * We assume that the requested provider does not already exist in the store.
519
 * The caller should check. If it does exist then adding it to the store later
520
 * will fail.
521
 */
522
OSSL_PROVIDER *ossl_provider_new(OSSL_LIB_CTX *libctx, const char *name,
523
                                 OSSL_provider_init_fn *init_function,
524
                                 int noconfig)
525
20
{
526
20
    struct provider_store_st *store = NULL;
527
20
    OSSL_PROVIDER_INFO template;
528
20
    OSSL_PROVIDER *prov = NULL;
529
530
20
    if ((store = get_provider_store(libctx)) == NULL)
531
0
        return NULL;
532
533
20
    memset(&template, 0, sizeof(template));
534
20
    if (init_function == NULL) {
535
20
        const OSSL_PROVIDER_INFO *p;
536
20
        size_t i;
537
538
        /* Check if this is a predefined builtin provider */
539
80
        for (p = ossl_predefined_providers; p->name != NULL; p++) {
540
60
            if (strcmp(p->name, name) == 0) {
541
0
                template = *p;
542
0
                break;
543
0
            }
544
60
        }
545
20
        if (p->name == NULL) {
546
            /* Check if this is a user added builtin provider */
547
20
            if (!CRYPTO_THREAD_read_lock(store->lock))
548
0
                return NULL;
549
20
            for (i = 0, p = store->provinfo; i < store->numprovinfo; p++, i++) {
550
20
                if (strcmp(p->name, name) == 0) {
551
20
                    template = *p;
552
20
                    break;
553
20
                }
554
20
            }
555
20
            CRYPTO_THREAD_unlock(store->lock);
556
20
        }
557
20
    } else {
558
0
        template.init = init_function;
559
0
    }
560
561
    /* provider_new() generates an error, so no need here */
562
20
    prov = provider_new(name, template.init, template.parameters);
563
564
20
    if (prov == NULL)
565
0
        return NULL;
566
567
20
    if (!ossl_provider_set_module_path(prov, template.path)) {
568
0
        ossl_provider_free(prov);
569
0
        return NULL;
570
0
    }
571
572
20
    prov->libctx = libctx;
573
20
#ifndef FIPS_MODULE
574
20
    prov->error_lib = ERR_get_next_error_library();
575
20
#endif
576
577
    /*
578
     * At this point, the provider is only partially "loaded".  To be
579
     * fully "loaded", ossl_provider_activate() must also be called and it must
580
     * then be added to the provider store.
581
     */
582
583
20
    return prov;
584
20
}
585
586
/* Assumes that the store lock is held */
587
static int create_provider_children(OSSL_PROVIDER *prov)
588
60
{
589
60
    int ret = 1;
590
60
#ifndef FIPS_MODULE
591
60
    struct provider_store_st *store = prov->store;
592
60
    OSSL_PROVIDER_CHILD_CB *child_cb;
593
60
    int i, max;
594
595
60
    max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
596
60
    for (i = 0; i < max; i++) {
597
        /*
598
         * This is newly activated (activatecnt == 1), so we need to
599
         * create child providers as necessary.
600
         */
601
0
        child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
602
0
        ret &= child_cb->create_cb((OSSL_CORE_HANDLE *)prov, child_cb->cbdata);
603
0
    }
604
60
#endif
605
606
60
    return ret;
607
60
}
608
609
int ossl_provider_add_to_store(OSSL_PROVIDER *prov, OSSL_PROVIDER **actualprov,
610
                               int retain_fallbacks)
611
20
{
612
20
    struct provider_store_st *store;
613
20
    int idx;
614
20
    OSSL_PROVIDER tmpl = { 0, };
615
20
    OSSL_PROVIDER *actualtmp = NULL;
616
617
20
    if (actualprov != NULL)
618
20
        *actualprov = NULL;
619
620
20
    if ((store = get_provider_store(prov->libctx)) == NULL)
621
0
        return 0;
622
623
20
    if (!CRYPTO_THREAD_write_lock(store->lock))
624
0
        return 0;
625
626
20
    tmpl.name = (char *)prov->name;
627
20
    idx = sk_OSSL_PROVIDER_find(store->providers, &tmpl);
628
20
    if (idx == -1)
629
20
        actualtmp = prov;
630
0
    else
631
0
        actualtmp = sk_OSSL_PROVIDER_value(store->providers, idx);
632
633
20
    if (idx == -1) {
634
20
        if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0)
635
0
            goto err;
636
20
        prov->store = store;
637
20
        if (!create_provider_children(prov)) {
638
0
            sk_OSSL_PROVIDER_delete_ptr(store->providers, prov);
639
0
            goto err;
640
0
        }
641
20
        if (!retain_fallbacks)
642
0
            store->use_fallbacks = 0;
643
20
    }
644
645
20
    CRYPTO_THREAD_unlock(store->lock);
646
647
20
    if (actualprov != NULL) {
648
20
        if (!ossl_provider_up_ref(actualtmp)) {
649
0
            ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
650
0
            actualtmp = NULL;
651
0
            return 0;
652
0
        }
653
20
        *actualprov = actualtmp;
654
20
    }
655
656
20
    if (idx >= 0) {
657
        /*
658
         * The provider is already in the store. Probably two threads
659
         * independently initialised their own provider objects with the same
660
         * name and raced to put them in the store. This thread lost. We
661
         * deactivate the one we just created and use the one that already
662
         * exists instead.
663
         * If we get here then we know we did not create provider children
664
         * above, so we inform ossl_provider_deactivate not to attempt to remove
665
         * any.
666
         */
667
0
        ossl_provider_deactivate(prov, 0);
668
0
        ossl_provider_free(prov);
669
0
    }
670
671
20
    return 1;
672
673
0
 err:
674
0
    CRYPTO_THREAD_unlock(store->lock);
675
0
    return 0;
676
20
}
677
678
void ossl_provider_free(OSSL_PROVIDER *prov)
679
9.64k
{
680
9.64k
    if (prov != NULL) {
681
9.61k
        int ref = 0;
682
683
9.61k
        CRYPTO_DOWN_REF(&prov->refcnt, &ref, prov->refcnt_lock);
684
685
        /*
686
         * When the refcount drops to zero, we clean up the provider.
687
         * Note that this also does teardown, which may seem late,
688
         * considering that init happens on first activation.  However,
689
         * there may be other structures hanging on to the provider after
690
         * the last deactivation and may therefore need full access to the
691
         * provider's services.  Therefore, we deinit late.
692
         */
693
9.61k
        if (ref == 0) {
694
43
            if (prov->flag_initialized) {
695
43
                ossl_provider_teardown(prov);
696
43
#ifndef OPENSSL_NO_ERR
697
43
# ifndef FIPS_MODULE
698
43
                if (prov->error_strings != NULL) {
699
0
                    ERR_unload_strings(prov->error_lib, prov->error_strings);
700
0
                    OPENSSL_free(prov->error_strings);
701
0
                    prov->error_strings = NULL;
702
0
                }
703
43
# endif
704
43
#endif
705
43
                OPENSSL_free(prov->operation_bits);
706
43
                prov->operation_bits = NULL;
707
43
                prov->operation_bits_sz = 0;
708
43
                prov->flag_initialized = 0;
709
43
            }
710
711
43
#ifndef FIPS_MODULE
712
            /*
713
             * We deregister thread handling whether or not the provider was
714
             * initialized. If init was attempted but was not successful then
715
             * the provider may still have registered a thread handler.
716
             */
717
43
            ossl_init_thread_deregister(prov);
718
43
            DSO_free(prov->module);
719
43
#endif
720
43
            OPENSSL_free(prov->name);
721
43
            OPENSSL_free(prov->path);
722
43
            sk_INFOPAIR_pop_free(prov->parameters, infopair_free);
723
43
            CRYPTO_THREAD_lock_free(prov->opbits_lock);
724
43
            CRYPTO_THREAD_lock_free(prov->flag_lock);
725
#ifndef HAVE_ATOMICS
726
            CRYPTO_THREAD_lock_free(prov->refcnt_lock);
727
#endif
728
43
            OPENSSL_free(prov);
729
43
        }
730
9.56k
#ifndef FIPS_MODULE
731
9.56k
        else if (prov->ischild) {
732
0
            ossl_provider_free_parent(prov, 0);
733
0
        }
734
9.61k
#endif
735
9.61k
    }
736
9.64k
}
737
738
/* Setters */
739
int ossl_provider_set_module_path(OSSL_PROVIDER *prov, const char *module_path)
740
60
{
741
60
    OPENSSL_free(prov->path);
742
60
    prov->path = NULL;
743
60
    if (module_path == NULL)
744
60
        return 1;
745
0
    if ((prov->path = OPENSSL_strdup(module_path)) != NULL)
746
0
        return 1;
747
0
    ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
748
0
    return 0;
749
0
}
750
751
static int infopair_add(STACK_OF(INFOPAIR) **infopairsk, const char *name,
752
                        const char *value)
753
0
{
754
0
    INFOPAIR *pair = NULL;
755
756
0
    if ((pair = OPENSSL_zalloc(sizeof(*pair))) != NULL
757
0
        && (*infopairsk != NULL
758
0
            || (*infopairsk = sk_INFOPAIR_new_null()) != NULL)
759
0
        && (pair->name = OPENSSL_strdup(name)) != NULL
760
0
        && (pair->value = OPENSSL_strdup(value)) != NULL
761
0
        && sk_INFOPAIR_push(*infopairsk, pair) > 0)
762
0
        return 1;
763
764
0
    if (pair != NULL) {
765
0
        OPENSSL_free(pair->name);
766
0
        OPENSSL_free(pair->value);
767
0
        OPENSSL_free(pair);
768
0
    }
769
0
    ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
770
0
    return 0;
771
0
}
772
773
int ossl_provider_add_parameter(OSSL_PROVIDER *prov,
774
                                const char *name, const char *value)
775
0
{
776
0
    return infopair_add(&prov->parameters, name, value);
777
0
}
778
779
int ossl_provider_info_add_parameter(OSSL_PROVIDER_INFO *provinfo,
780
                                     const char *name,
781
                                     const char *value)
782
0
{
783
0
    return infopair_add(&provinfo->parameters, name, value);
784
0
}
785
786
/*
787
 * Provider activation.
788
 *
789
 * What "activation" means depends on the provider form; for built in
790
 * providers (in the library or the application alike), the provider
791
 * can already be considered to be loaded, all that's needed is to
792
 * initialize it.  However, for dynamically loadable provider modules,
793
 * we must first load that module.
794
 *
795
 * Built in modules are distinguished from dynamically loaded modules
796
 * with an already assigned init function.
797
 */
798
static const OSSL_DISPATCH *core_dispatch; /* Define further down */
799
800
int OSSL_PROVIDER_set_default_search_path(OSSL_LIB_CTX *libctx,
801
                                          const char *path)
802
0
{
803
0
    struct provider_store_st *store;
804
0
    char *p = NULL;
805
806
0
    if (path != NULL) {
807
0
        p = OPENSSL_strdup(path);
808
0
        if (p == NULL) {
809
0
            ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
810
0
            return 0;
811
0
        }
812
0
    }
813
0
    if ((store = get_provider_store(libctx)) != NULL
814
0
            && CRYPTO_THREAD_write_lock(store->default_path_lock)) {
815
0
        OPENSSL_free(store->default_path);
816
0
        store->default_path = p;
817
0
        CRYPTO_THREAD_unlock(store->default_path_lock);
818
0
        return 1;
819
0
    }
820
0
    OPENSSL_free(p);
821
0
    return 0;
822
0
}
823
824
/*
825
 * Internal version that doesn't affect the store flags, and thereby avoid
826
 * locking.  Direct callers must remember to set the store flags when
827
 * appropriate.
828
 */
829
static int provider_init(OSSL_PROVIDER *prov)
830
58
{
831
58
    const OSSL_DISPATCH *provider_dispatch = NULL;
832
58
    void *tmp_provctx = NULL;    /* safety measure */
833
58
#ifndef OPENSSL_NO_ERR
834
58
# ifndef FIPS_MODULE
835
58
    OSSL_FUNC_provider_get_reason_strings_fn *p_get_reason_strings = NULL;
836
58
# endif
837
58
#endif
838
58
    int ok = 0;
839
840
58
    if (!ossl_assert(!prov->flag_initialized)) {
841
0
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
842
0
        goto end;
843
0
    }
844
845
    /*
846
     * If the init function isn't set, it indicates that this provider is
847
     * a loadable module.
848
     */
849
58
    if (prov->init_function == NULL) {
850
#ifdef FIPS_MODULE
851
        goto end;
852
#else
853
0
        if (prov->module == NULL) {
854
0
            char *allocated_path = NULL;
855
0
            const char *module_path = NULL;
856
0
            char *merged_path = NULL;
857
0
            const char *load_dir = NULL;
858
0
            char *allocated_load_dir = NULL;
859
0
            struct provider_store_st *store;
860
861
0
            if ((prov->module = DSO_new()) == NULL) {
862
                /* DSO_new() generates an error already */
863
0
                goto end;
864
0
            }
865
866
0
            if ((store = get_provider_store(prov->libctx)) == NULL
867
0
                    || !CRYPTO_THREAD_read_lock(store->default_path_lock))
868
0
                goto end;
869
870
0
            if (store->default_path != NULL) {
871
0
                allocated_load_dir = OPENSSL_strdup(store->default_path);
872
0
                CRYPTO_THREAD_unlock(store->default_path_lock);
873
0
                if (allocated_load_dir == NULL) {
874
0
                    ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
875
0
                    goto end;
876
0
                }
877
0
                load_dir = allocated_load_dir;
878
0
            } else {
879
0
                CRYPTO_THREAD_unlock(store->default_path_lock);
880
0
            }
881
882
0
            if (load_dir == NULL) {
883
0
                load_dir = ossl_safe_getenv("OPENSSL_MODULES");
884
0
                if (load_dir == NULL)
885
0
                    load_dir = MODULESDIR;
886
0
            }
887
888
0
            DSO_ctrl(prov->module, DSO_CTRL_SET_FLAGS,
889
0
                     DSO_FLAG_NAME_TRANSLATION_EXT_ONLY, NULL);
890
891
0
            module_path = prov->path;
892
0
            if (module_path == NULL)
893
0
                module_path = allocated_path =
894
0
                    DSO_convert_filename(prov->module, prov->name);
895
0
            if (module_path != NULL)
896
0
                merged_path = DSO_merge(prov->module, module_path, load_dir);
897
898
0
            if (merged_path == NULL
899
0
                || (DSO_load(prov->module, merged_path, NULL, 0)) == NULL) {
900
0
                DSO_free(prov->module);
901
0
                prov->module = NULL;
902
0
            }
903
904
0
            OPENSSL_free(merged_path);
905
0
            OPENSSL_free(allocated_path);
906
0
            OPENSSL_free(allocated_load_dir);
907
0
        }
908
909
0
        if (prov->module == NULL) {
910
            /* DSO has already recorded errors, this is just a tracepoint */
911
0
            ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_DSO_LIB,
912
0
                           "name=%s", prov->name);
913
0
            goto end;
914
0
        }
915
916
0
        prov->init_function = (OSSL_provider_init_fn *)
917
0
            DSO_bind_func(prov->module, "OSSL_provider_init");
918
0
#endif
919
0
    }
920
921
    /* Check for and call the initialise function for the provider. */
922
58
    if (prov->init_function == NULL) {
923
0
        ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_UNSUPPORTED,
924
0
                       "name=%s, provider has no provider init function",
925
0
                       prov->name);
926
0
        goto end;
927
0
    }
928
929
58
    if (!prov->init_function((OSSL_CORE_HANDLE *)prov, core_dispatch,
930
58
                             &provider_dispatch, &tmp_provctx)) {
931
0
        ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_INIT_FAIL,
932
0
                       "name=%s", prov->name);
933
0
        goto end;
934
0
    }
935
58
    prov->provctx = tmp_provctx;
936
58
    prov->dispatch = provider_dispatch;
937
938
58
    if (provider_dispatch != NULL) {
939
246
        for (; provider_dispatch->function_id != 0; provider_dispatch++) {
940
188
            switch (provider_dispatch->function_id) {
941
58
            case OSSL_FUNC_PROVIDER_TEARDOWN:
942
58
                prov->teardown =
943
58
                    OSSL_FUNC_provider_teardown(provider_dispatch);
944
58
                break;
945
24
            case OSSL_FUNC_PROVIDER_GETTABLE_PARAMS:
946
24
                prov->gettable_params =
947
24
                    OSSL_FUNC_provider_gettable_params(provider_dispatch);
948
24
                break;
949
24
            case OSSL_FUNC_PROVIDER_GET_PARAMS:
950
24
                prov->get_params =
951
24
                    OSSL_FUNC_provider_get_params(provider_dispatch);
952
24
                break;
953
0
            case OSSL_FUNC_PROVIDER_SELF_TEST:
954
0
                prov->self_test =
955
0
                    OSSL_FUNC_provider_self_test(provider_dispatch);
956
0
                break;
957
24
            case OSSL_FUNC_PROVIDER_GET_CAPABILITIES:
958
24
                prov->get_capabilities =
959
24
                    OSSL_FUNC_provider_get_capabilities(provider_dispatch);
960
24
                break;
961
58
            case OSSL_FUNC_PROVIDER_QUERY_OPERATION:
962
58
                prov->query_operation =
963
58
                    OSSL_FUNC_provider_query_operation(provider_dispatch);
964
58
                break;
965
0
            case OSSL_FUNC_PROVIDER_UNQUERY_OPERATION:
966
0
                prov->unquery_operation =
967
0
                    OSSL_FUNC_provider_unquery_operation(provider_dispatch);
968
0
                break;
969
0
#ifndef OPENSSL_NO_ERR
970
0
# ifndef FIPS_MODULE
971
0
            case OSSL_FUNC_PROVIDER_GET_REASON_STRINGS:
972
0
                p_get_reason_strings =
973
0
                    OSSL_FUNC_provider_get_reason_strings(provider_dispatch);
974
0
                break;
975
188
# endif
976
188
#endif
977
188
            }
978
188
        }
979
58
    }
980
981
58
#ifndef OPENSSL_NO_ERR
982
58
# ifndef FIPS_MODULE
983
58
    if (p_get_reason_strings != NULL) {
984
0
        const OSSL_ITEM *reasonstrings = p_get_reason_strings(prov->provctx);
985
0
        size_t cnt, cnt2;
986
987
        /*
988
         * ERR_load_strings() handles ERR_STRING_DATA rather than OSSL_ITEM,
989
         * although they are essentially the same type.
990
         * Furthermore, ERR_load_strings() patches the array's error number
991
         * with the error library number, so we need to make a copy of that
992
         * array either way.
993
         */
994
0
        cnt = 0;
995
0
        while (reasonstrings[cnt].id != 0) {
996
0
            if (ERR_GET_LIB(reasonstrings[cnt].id) != 0)
997
0
                goto end;
998
0
            cnt++;
999
0
        }
1000
0
        cnt++;                   /* One for the terminating item */
1001
1002
        /* Allocate one extra item for the "library" name */
1003
0
        prov->error_strings =
1004
0
            OPENSSL_zalloc(sizeof(ERR_STRING_DATA) * (cnt + 1));
1005
0
        if (prov->error_strings == NULL)
1006
0
            goto end;
1007
1008
        /*
1009
         * Set the "library" name.
1010
         */
1011
0
        prov->error_strings[0].error = ERR_PACK(prov->error_lib, 0, 0);
1012
0
        prov->error_strings[0].string = prov->name;
1013
        /*
1014
         * Copy reasonstrings item 0..cnt-1 to prov->error_trings positions
1015
         * 1..cnt.
1016
         */
1017
0
        for (cnt2 = 1; cnt2 <= cnt; cnt2++) {
1018
0
            prov->error_strings[cnt2].error = (int)reasonstrings[cnt2-1].id;
1019
0
            prov->error_strings[cnt2].string = reasonstrings[cnt2-1].ptr;
1020
0
        }
1021
1022
0
        ERR_load_strings(prov->error_lib, prov->error_strings);
1023
0
    }
1024
58
# endif
1025
58
#endif
1026
1027
    /* With this flag set, this provider has become fully "loaded". */
1028
58
    prov->flag_initialized = 1;
1029
58
    ok = 1;
1030
1031
58
 end:
1032
58
    return ok;
1033
58
}
1034
1035
/*
1036
 * Deactivate a provider. If upcalls is 0 then we suppress any upcalls to a
1037
 * parent provider. If removechildren is 0 then we suppress any calls to remove
1038
 * child providers.
1039
 * Return -1 on failure and the activation count on success
1040
 */
1041
static int provider_deactivate(OSSL_PROVIDER *prov, int upcalls,
1042
                               int removechildren)
1043
3.40M
{
1044
3.40M
    int count;
1045
3.40M
    struct provider_store_st *store;
1046
3.40M
#ifndef FIPS_MODULE
1047
3.40M
    int freeparent = 0;
1048
3.40M
#endif
1049
3.40M
    int lock = 1;
1050
1051
3.40M
    if (!ossl_assert(prov != NULL))
1052
0
        return -1;
1053
1054
    /*
1055
     * No need to lock if we've got no store because we've not been shared with
1056
     * other threads.
1057
     */
1058
3.40M
    store = get_provider_store(prov->libctx);
1059
3.40M
    if (store == NULL)
1060
0
        lock = 0;
1061
1062
3.40M
    if (lock && !CRYPTO_THREAD_read_lock(store->lock))
1063
0
        return -1;
1064
3.40M
    if (lock && !CRYPTO_THREAD_write_lock(prov->flag_lock)) {
1065
0
        CRYPTO_THREAD_unlock(store->lock);
1066
0
        return -1;
1067
0
    }
1068
1069
3.40M
#ifndef FIPS_MODULE
1070
3.40M
    if (prov->activatecnt >= 2 && prov->ischild && upcalls) {
1071
        /*
1072
         * We have had a direct activation in this child libctx so we need to
1073
         * now down the ref count in the parent provider. We do the actual down
1074
         * ref outside of the flag_lock, since it could involve getting other
1075
         * locks.
1076
         */
1077
0
        freeparent = 1;
1078
0
    }
1079
3.40M
#endif
1080
1081
3.40M
    if ((count = --prov->activatecnt) < 1)
1082
34
        prov->flag_activated = 0;
1083
3.40M
#ifndef FIPS_MODULE
1084
3.40M
    else
1085
3.40M
        removechildren = 0;
1086
3.40M
#endif
1087
1088
3.40M
#ifndef FIPS_MODULE
1089
3.40M
    if (removechildren && store != NULL) {
1090
34
        int i, max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
1091
34
        OSSL_PROVIDER_CHILD_CB *child_cb;
1092
1093
34
        for (i = 0; i < max; i++) {
1094
0
            child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
1095
0
            child_cb->remove_cb((OSSL_CORE_HANDLE *)prov, child_cb->cbdata);
1096
0
        }
1097
34
    }
1098
3.40M
#endif
1099
3.40M
    if (lock) {
1100
3.40M
        CRYPTO_THREAD_unlock(prov->flag_lock);
1101
3.40M
        CRYPTO_THREAD_unlock(store->lock);
1102
3.40M
    }
1103
3.40M
#ifndef FIPS_MODULE
1104
3.40M
    if (freeparent)
1105
0
        ossl_provider_free_parent(prov, 1);
1106
3.40M
#endif
1107
1108
    /* We don't deinit here, that's done in ossl_provider_free() */
1109
3.40M
    return count;
1110
3.40M
}
1111
1112
/*
1113
 * Activate a provider.
1114
 * Return -1 on failure and the activation count on success
1115
 */
1116
static int provider_activate(OSSL_PROVIDER *prov, int lock, int upcalls)
1117
3.40M
{
1118
3.40M
    int count = -1;
1119
3.40M
    struct provider_store_st *store;
1120
3.40M
    int ret = 1;
1121
1122
3.40M
    store = prov->store;
1123
    /*
1124
    * If the provider hasn't been added to the store, then we don't need
1125
    * any locks because we've not shared it with other threads.
1126
    */
1127
3.40M
    if (store == NULL) {
1128
34
        lock = 0;
1129
34
        if (!provider_init(prov))
1130
0
            return -1;
1131
34
    }
1132
1133
3.40M
#ifndef FIPS_MODULE
1134
3.40M
    if (prov->ischild && upcalls && !ossl_provider_up_ref_parent(prov, 1))
1135
0
        return -1;
1136
3.40M
#endif
1137
1138
3.40M
    if (lock && !CRYPTO_THREAD_read_lock(store->lock)) {
1139
0
#ifndef FIPS_MODULE
1140
0
        if (prov->ischild && upcalls)
1141
0
            ossl_provider_free_parent(prov, 1);
1142
0
#endif
1143
0
        return -1;
1144
0
    }
1145
1146
3.40M
    if (lock && !CRYPTO_THREAD_write_lock(prov->flag_lock)) {
1147
0
        CRYPTO_THREAD_unlock(store->lock);
1148
0
#ifndef FIPS_MODULE
1149
0
        if (prov->ischild && upcalls)
1150
0
            ossl_provider_free_parent(prov, 1);
1151
0
#endif
1152
0
        return -1;
1153
0
    }
1154
1155
3.40M
    count = ++prov->activatecnt;
1156
3.40M
    prov->flag_activated = 1;
1157
1158
3.40M
    if (prov->activatecnt == 1 && store != NULL) {
1159
0
        ret = create_provider_children(prov);
1160
0
    }
1161
3.40M
    if (lock) {
1162
0
        CRYPTO_THREAD_unlock(prov->flag_lock);
1163
0
        CRYPTO_THREAD_unlock(store->lock);
1164
0
    }
1165
1166
3.40M
    if (!ret)
1167
0
        return -1;
1168
1169
3.40M
    return count;
1170
3.40M
}
1171
1172
static int provider_flush_store_cache(const OSSL_PROVIDER *prov)
1173
60
{
1174
60
    struct provider_store_st *store;
1175
60
    int freeing;
1176
1177
60
    if ((store = get_provider_store(prov->libctx)) == NULL)
1178
0
        return 0;
1179
1180
60
    if (!CRYPTO_THREAD_read_lock(store->lock))
1181
0
        return 0;
1182
60
    freeing = store->freeing;
1183
60
    CRYPTO_THREAD_unlock(store->lock);
1184
1185
60
    if (!freeing) {
1186
60
        int acc
1187
60
            = evp_method_store_cache_flush(prov->libctx)
1188
60
#ifndef FIPS_MODULE
1189
60
            + ossl_encoder_store_cache_flush(prov->libctx)
1190
60
            + ossl_decoder_store_cache_flush(prov->libctx)
1191
60
            + ossl_store_loader_store_cache_flush(prov->libctx)
1192
60
#endif
1193
60
            ;
1194
1195
60
#ifndef FIPS_MODULE
1196
60
        return acc == 4;
1197
#else
1198
        return acc == 1;
1199
#endif
1200
60
    }
1201
0
    return 1;
1202
60
}
1203
1204
static int provider_remove_store_methods(OSSL_PROVIDER *prov)
1205
103
{
1206
103
    struct provider_store_st *store;
1207
103
    int freeing;
1208
1209
103
    if ((store = get_provider_store(prov->libctx)) == NULL)
1210
0
        return 0;
1211
1212
103
    if (!CRYPTO_THREAD_read_lock(store->lock))
1213
0
        return 0;
1214
103
    freeing = store->freeing;
1215
103
    CRYPTO_THREAD_unlock(store->lock);
1216
1217
103
    if (!freeing) {
1218
0
        int acc;
1219
1220
0
        if (!CRYPTO_THREAD_write_lock(prov->opbits_lock))
1221
0
            return 0;
1222
0
        OPENSSL_free(prov->operation_bits);
1223
0
        prov->operation_bits = NULL;
1224
0
        prov->operation_bits_sz = 0;
1225
0
        CRYPTO_THREAD_unlock(prov->opbits_lock);
1226
1227
0
        acc = evp_method_store_remove_all_provided(prov)
1228
0
#ifndef FIPS_MODULE
1229
0
            + ossl_encoder_store_remove_all_provided(prov)
1230
0
            + ossl_decoder_store_remove_all_provided(prov)
1231
0
            + ossl_store_loader_store_remove_all_provided(prov)
1232
0
#endif
1233
0
            ;
1234
1235
0
#ifndef FIPS_MODULE
1236
0
        return acc == 4;
1237
#else
1238
        return acc == 1;
1239
#endif
1240
0
    }
1241
103
    return 1;
1242
103
}
1243
1244
int ossl_provider_activate(OSSL_PROVIDER *prov, int upcalls, int aschild)
1245
60
{
1246
60
    int count;
1247
1248
60
    if (prov == NULL)
1249
0
        return 0;
1250
60
#ifndef FIPS_MODULE
1251
    /*
1252
     * If aschild is true, then we only actually do the activation if the
1253
     * provider is a child. If its not, this is still success.
1254
     */
1255
60
    if (aschild && !prov->ischild)
1256
0
        return 1;
1257
60
#endif
1258
60
    if ((count = provider_activate(prov, 1, upcalls)) > 0)
1259
60
        return count == 1 ? provider_flush_store_cache(prov) : 1;
1260
1261
0
    return 0;
1262
60
}
1263
1264
int ossl_provider_deactivate(OSSL_PROVIDER *prov, int removechildren)
1265
103
{
1266
103
    int count;
1267
1268
103
    if (prov == NULL
1269
103
            || (count = provider_deactivate(prov, 1, removechildren)) < 0)
1270
0
        return 0;
1271
103
    return count == 0 ? provider_remove_store_methods(prov) : 1;
1272
103
}
1273
1274
void *ossl_provider_ctx(const OSSL_PROVIDER *prov)
1275
11.7M
{
1276
11.7M
    return prov != NULL ? prov->provctx : NULL;
1277
11.7M
}
1278
1279
/*
1280
 * This function only does something once when store->use_fallbacks == 1,
1281
 * and then sets store->use_fallbacks = 0, so the second call and so on is
1282
 * effectively a no-op.
1283
 */
1284
static int provider_activate_fallbacks(struct provider_store_st *store)
1285
2.36M
{
1286
2.36M
    int use_fallbacks;
1287
2.36M
    int activated_fallback_count = 0;
1288
2.36M
    int ret = 0;
1289
2.36M
    const OSSL_PROVIDER_INFO *p;
1290
1291
2.36M
    if (!CRYPTO_THREAD_read_lock(store->lock))
1292
0
        return 0;
1293
2.36M
    use_fallbacks = store->use_fallbacks;
1294
2.36M
    CRYPTO_THREAD_unlock(store->lock);
1295
2.36M
    if (!use_fallbacks)
1296
2.36M
        return 1;
1297
1298
24
    if (!CRYPTO_THREAD_write_lock(store->lock))
1299
0
        return 0;
1300
    /* Check again, just in case another thread changed it */
1301
24
    use_fallbacks = store->use_fallbacks;
1302
24
    if (!use_fallbacks) {
1303
0
        CRYPTO_THREAD_unlock(store->lock);
1304
0
        return 1;
1305
0
    }
1306
1307
96
    for (p = ossl_predefined_providers; p->name != NULL; p++) {
1308
72
        OSSL_PROVIDER *prov = NULL;
1309
1310
72
        if (!p->is_fallback)
1311
48
            continue;
1312
        /*
1313
         * We use the internal constructor directly here,
1314
         * otherwise we get a call loop
1315
         */
1316
24
        prov = provider_new(p->name, p->init, NULL);
1317
24
        if (prov == NULL)
1318
0
            goto err;
1319
24
        prov->libctx = store->libctx;
1320
24
#ifndef FIPS_MODULE
1321
24
        prov->error_lib = ERR_get_next_error_library();
1322
24
#endif
1323
1324
        /*
1325
         * We are calling provider_activate while holding the store lock. This
1326
         * means the init function will be called while holding a lock. Normally
1327
         * we try to avoid calling a user callback while holding a lock.
1328
         * However, fallbacks are never third party providers so we accept this.
1329
         */
1330
24
        if (provider_activate(prov, 0, 0) < 0) {
1331
0
            ossl_provider_free(prov);
1332
0
            goto err;
1333
0
        }
1334
24
        prov->store = store;
1335
24
        if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
1336
0
            ossl_provider_free(prov);
1337
0
            goto err;
1338
0
        }
1339
24
        activated_fallback_count++;
1340
24
    }
1341
1342
24
    if (activated_fallback_count > 0) {
1343
24
        store->use_fallbacks = 0;
1344
24
        ret = 1;
1345
24
    }
1346
24
 err:
1347
24
    CRYPTO_THREAD_unlock(store->lock);
1348
24
    return ret;
1349
24
}
1350
1351
int ossl_provider_doall_activated(OSSL_LIB_CTX *ctx,
1352
                                  int (*cb)(OSSL_PROVIDER *provider,
1353
                                            void *cbdata),
1354
                                  void *cbdata)
1355
1.89M
{
1356
1.89M
    int ret = 0, curr, max, ref = 0;
1357
1.89M
    struct provider_store_st *store = get_provider_store(ctx);
1358
1.89M
    STACK_OF(OSSL_PROVIDER) *provs = NULL;
1359
1360
1.89M
#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_AUTOLOAD_CONFIG)
1361
    /*
1362
     * Make sure any providers are loaded from config before we try to use
1363
     * them.
1364
     */
1365
1.89M
    if (ossl_lib_ctx_is_default(ctx))
1366
1.89M
        OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
1367
1.89M
#endif
1368
1369
1.89M
    if (store == NULL)
1370
0
        return 1;
1371
1.89M
    if (!provider_activate_fallbacks(store))
1372
0
        return 0;
1373
1374
    /*
1375
     * Under lock, grab a copy of the provider list and up_ref each
1376
     * provider so that they don't disappear underneath us.
1377
     */
1378
1.89M
    if (!CRYPTO_THREAD_read_lock(store->lock))
1379
0
        return 0;
1380
1.89M
    provs = sk_OSSL_PROVIDER_dup(store->providers);
1381
1.89M
    if (provs == NULL) {
1382
0
        CRYPTO_THREAD_unlock(store->lock);
1383
0
        return 0;
1384
0
    }
1385
1.89M
    max = sk_OSSL_PROVIDER_num(provs);
1386
    /*
1387
     * We work backwards through the stack so that we can safely delete items
1388
     * as we go.
1389
     */
1390
5.30M
    for (curr = max - 1; curr >= 0; curr--) {
1391
3.40M
        OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(provs, curr);
1392
1393
3.40M
        if (!CRYPTO_THREAD_write_lock(prov->flag_lock))
1394
0
            goto err_unlock;
1395
3.40M
        if (prov->flag_activated) {
1396
            /*
1397
             * We call CRYPTO_UP_REF directly rather than ossl_provider_up_ref
1398
             * to avoid upping the ref count on the parent provider, which we
1399
             * must not do while holding locks.
1400
             */
1401
3.40M
            if (CRYPTO_UP_REF(&prov->refcnt, &ref, prov->refcnt_lock) <= 0) {
1402
0
                CRYPTO_THREAD_unlock(prov->flag_lock);
1403
0
                goto err_unlock;
1404
0
            }
1405
            /*
1406
             * It's already activated, but we up the activated count to ensure
1407
             * it remains activated until after we've called the user callback.
1408
             * We do this with no locking (because we already hold the locks)
1409
             * and no upcalls (which must not be called when locks are held). In
1410
             * theory this could mean the parent provider goes inactive, whilst
1411
             * still activated in the child for a short period. That's ok.
1412
             */
1413
3.40M
            if (provider_activate(prov, 0, 0) < 0) {
1414
0
                CRYPTO_DOWN_REF(&prov->refcnt, &ref, prov->refcnt_lock);
1415
0
                CRYPTO_THREAD_unlock(prov->flag_lock);
1416
0
                goto err_unlock;
1417
0
            }
1418
3.40M
        } else {
1419
0
            sk_OSSL_PROVIDER_delete(provs, curr);
1420
0
            max--;
1421
0
        }
1422
3.40M
        CRYPTO_THREAD_unlock(prov->flag_lock);
1423
3.40M
    }
1424
1.89M
    CRYPTO_THREAD_unlock(store->lock);
1425
1426
    /*
1427
     * Now, we sweep through all providers not under lock
1428
     */
1429
5.30M
    for (curr = 0; curr < max; curr++) {
1430
3.40M
        OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(provs, curr);
1431
1432
3.40M
        if (!cb(prov, cbdata)) {
1433
0
            curr = -1;
1434
0
            goto finish;
1435
0
        }
1436
3.40M
    }
1437
1.89M
    curr = -1;
1438
1439
1.89M
    ret = 1;
1440
1.89M
    goto finish;
1441
1442
0
 err_unlock:
1443
0
    CRYPTO_THREAD_unlock(store->lock);
1444
1.89M
 finish:
1445
    /*
1446
     * The pop_free call doesn't do what we want on an error condition. We
1447
     * either start from the first item in the stack, or part way through if
1448
     * we only processed some of the items.
1449
     */
1450
5.30M
    for (curr++; curr < max; curr++) {
1451
3.40M
        OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(provs, curr);
1452
1453
3.40M
        provider_deactivate(prov, 0, 1);
1454
        /*
1455
         * As above where we did the up-ref, we don't call ossl_provider_free
1456
         * to avoid making upcalls. There should always be at least one ref
1457
         * to the provider in the store, so this should never drop to 0.
1458
         */
1459
3.40M
        CRYPTO_DOWN_REF(&prov->refcnt, &ref, prov->refcnt_lock);
1460
        /*
1461
         * Not much we can do if this assert ever fails. So we don't use
1462
         * ossl_assert here.
1463
         */
1464
3.40M
        assert(ref > 0);
1465
3.40M
    }
1466
1.89M
    sk_OSSL_PROVIDER_free(provs);
1467
1.89M
    return ret;
1468
1.89M
}
1469
1470
int OSSL_PROVIDER_available(OSSL_LIB_CTX *libctx, const char *name)
1471
0
{
1472
0
    OSSL_PROVIDER *prov = NULL;
1473
0
    int available = 0;
1474
0
    struct provider_store_st *store = get_provider_store(libctx);
1475
1476
0
    if (store == NULL || !provider_activate_fallbacks(store))
1477
0
        return 0;
1478
1479
0
    prov = ossl_provider_find(libctx, name, 0);
1480
0
    if (prov != NULL) {
1481
0
        if (!CRYPTO_THREAD_read_lock(prov->flag_lock))
1482
0
            return 0;
1483
0
        available = prov->flag_activated;
1484
0
        CRYPTO_THREAD_unlock(prov->flag_lock);
1485
0
        ossl_provider_free(prov);
1486
0
    }
1487
0
    return available;
1488
0
}
1489
1490
/* Getters of Provider Object data */
1491
const char *ossl_provider_name(const OSSL_PROVIDER *prov)
1492
42
{
1493
42
    return prov->name;
1494
42
}
1495
1496
const DSO *ossl_provider_dso(const OSSL_PROVIDER *prov)
1497
0
{
1498
0
    return prov->module;
1499
0
}
1500
1501
const char *ossl_provider_module_name(const OSSL_PROVIDER *prov)
1502
0
{
1503
#ifdef FIPS_MODULE
1504
    return NULL;
1505
#else
1506
0
    return DSO_get_filename(prov->module);
1507
0
#endif
1508
0
}
1509
1510
const char *ossl_provider_module_path(const OSSL_PROVIDER *prov)
1511
0
{
1512
#ifdef FIPS_MODULE
1513
    return NULL;
1514
#else
1515
    /* FIXME: Ensure it's a full path */
1516
0
    return DSO_get_filename(prov->module);
1517
0
#endif
1518
0
}
1519
1520
void *ossl_provider_prov_ctx(const OSSL_PROVIDER *prov)
1521
321M
{
1522
321M
    if (prov != NULL)
1523
321M
        return prov->provctx;
1524
1525
0
    return NULL;
1526
321M
}
1527
1528
const OSSL_DISPATCH *ossl_provider_get0_dispatch(const OSSL_PROVIDER *prov)
1529
0
{
1530
0
    if (prov != NULL)
1531
0
        return prov->dispatch;
1532
1533
0
    return NULL;
1534
0
}
1535
1536
OSSL_LIB_CTX *ossl_provider_libctx(const OSSL_PROVIDER *prov)
1537
276M
{
1538
276M
    return prov != NULL ? prov->libctx : NULL;
1539
276M
}
1540
1541
/* Wrappers around calls to the provider */
1542
void ossl_provider_teardown(const OSSL_PROVIDER *prov)
1543
24
{
1544
24
    if (prov->teardown != NULL
1545
24
#ifndef FIPS_MODULE
1546
24
            && !prov->ischild
1547
24
#endif
1548
24
       )
1549
24
        prov->teardown(prov->provctx);
1550
24
}
1551
1552
const OSSL_PARAM *ossl_provider_gettable_params(const OSSL_PROVIDER *prov)
1553
0
{
1554
0
    return prov->gettable_params == NULL
1555
0
        ? NULL : prov->gettable_params(prov->provctx);
1556
0
}
1557
1558
int ossl_provider_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
1559
0
{
1560
0
    return prov->get_params == NULL
1561
0
        ? 0 : prov->get_params(prov->provctx, params);
1562
0
}
1563
1564
int ossl_provider_self_test(const OSSL_PROVIDER *prov)
1565
0
{
1566
0
    int ret;
1567
1568
0
    if (prov->self_test == NULL)
1569
0
        return 1;
1570
0
    ret = prov->self_test(prov->provctx);
1571
0
    if (ret == 0)
1572
0
        (void)provider_remove_store_methods((OSSL_PROVIDER *)prov);
1573
0
    return ret;
1574
0
}
1575
1576
int ossl_provider_get_capabilities(const OSSL_PROVIDER *prov,
1577
                                   const char *capability,
1578
                                   OSSL_CALLBACK *cb,
1579
                                   void *arg)
1580
144k
{
1581
144k
    return prov->get_capabilities == NULL
1582
144k
        ? 1 : prov->get_capabilities(prov->provctx, capability, cb, arg);
1583
144k
}
1584
1585
const OSSL_ALGORITHM *ossl_provider_query_operation(const OSSL_PROVIDER *prov,
1586
                                                    int operation_id,
1587
                                                    int *no_cache)
1588
4.20M
{
1589
4.20M
    const OSSL_ALGORITHM *res;
1590
1591
4.20M
    if (prov->query_operation == NULL)
1592
0
        return NULL;
1593
4.20M
    res = prov->query_operation(prov->provctx, operation_id, no_cache);
1594
#if defined(OPENSSL_NO_CACHED_FETCH)
1595
    /* Forcing the non-caching of queries */
1596
    if (no_cache != NULL)
1597
        *no_cache = 1;
1598
#endif
1599
4.20M
    return res;
1600
4.20M
}
1601
1602
void ossl_provider_unquery_operation(const OSSL_PROVIDER *prov,
1603
                                     int operation_id,
1604
                                     const OSSL_ALGORITHM *algs)
1605
4.20M
{
1606
4.20M
    if (prov->unquery_operation != NULL)
1607
0
        prov->unquery_operation(prov->provctx, operation_id, algs);
1608
4.20M
}
1609
1610
int ossl_provider_set_operation_bit(OSSL_PROVIDER *provider, size_t bitnum)
1611
482
{
1612
482
    size_t byte = bitnum / 8;
1613
482
    unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
1614
1615
482
    if (!CRYPTO_THREAD_write_lock(provider->opbits_lock))
1616
0
        return 0;
1617
482
    if (provider->operation_bits_sz <= byte) {
1618
171
        unsigned char *tmp = OPENSSL_realloc(provider->operation_bits,
1619
171
                                             byte + 1);
1620
1621
171
        if (tmp == NULL) {
1622
0
            CRYPTO_THREAD_unlock(provider->opbits_lock);
1623
0
            ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
1624
0
            return 0;
1625
0
        }
1626
171
        provider->operation_bits = tmp;
1627
171
        memset(provider->operation_bits + provider->operation_bits_sz,
1628
171
               '\0', byte + 1 - provider->operation_bits_sz);
1629
171
        provider->operation_bits_sz = byte + 1;
1630
171
    }
1631
482
    provider->operation_bits[byte] |= bit;
1632
482
    CRYPTO_THREAD_unlock(provider->opbits_lock);
1633
482
    return 1;
1634
482
}
1635
1636
int ossl_provider_test_operation_bit(OSSL_PROVIDER *provider, size_t bitnum,
1637
                                     int *result)
1638
5.28M
{
1639
5.28M
    size_t byte = bitnum / 8;
1640
5.28M
    unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
1641
1642
5.28M
    if (!ossl_assert(result != NULL)) {
1643
0
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
1644
0
        return 0;
1645
0
    }
1646
1647
5.28M
    *result = 0;
1648
5.28M
    if (!CRYPTO_THREAD_read_lock(provider->opbits_lock))
1649
0
        return 0;
1650
5.28M
    if (provider->operation_bits_sz > byte)
1651
5.28M
        *result = ((provider->operation_bits[byte] & bit) != 0);
1652
5.28M
    CRYPTO_THREAD_unlock(provider->opbits_lock);
1653
5.28M
    return 1;
1654
5.28M
}
1655
1656
#ifndef FIPS_MODULE
1657
const OSSL_CORE_HANDLE *ossl_provider_get_parent(OSSL_PROVIDER *prov)
1658
0
{
1659
0
    return prov->handle;
1660
0
}
1661
1662
int ossl_provider_is_child(const OSSL_PROVIDER *prov)
1663
0
{
1664
0
    return prov->ischild;
1665
0
}
1666
1667
int ossl_provider_set_child(OSSL_PROVIDER *prov, const OSSL_CORE_HANDLE *handle)
1668
0
{
1669
0
    prov->handle = handle;
1670
0
    prov->ischild = 1;
1671
1672
0
    return 1;
1673
0
}
1674
1675
int ossl_provider_default_props_update(OSSL_LIB_CTX *libctx, const char *props)
1676
0
{
1677
0
#ifndef FIPS_MODULE
1678
0
    struct provider_store_st *store = NULL;
1679
0
    int i, max;
1680
0
    OSSL_PROVIDER_CHILD_CB *child_cb;
1681
1682
0
    if ((store = get_provider_store(libctx)) == NULL)
1683
0
        return 0;
1684
1685
0
    if (!CRYPTO_THREAD_read_lock(store->lock))
1686
0
        return 0;
1687
1688
0
    max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
1689
0
    for (i = 0; i < max; i++) {
1690
0
        child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
1691
0
        child_cb->global_props_cb(props, child_cb->cbdata);
1692
0
    }
1693
1694
0
    CRYPTO_THREAD_unlock(store->lock);
1695
0
#endif
1696
0
    return 1;
1697
0
}
1698
1699
static int ossl_provider_register_child_cb(const OSSL_CORE_HANDLE *handle,
1700
                                           int (*create_cb)(
1701
                                               const OSSL_CORE_HANDLE *provider,
1702
                                               void *cbdata),
1703
                                           int (*remove_cb)(
1704
                                               const OSSL_CORE_HANDLE *provider,
1705
                                               void *cbdata),
1706
                                           int (*global_props_cb)(
1707
                                               const char *props,
1708
                                               void *cbdata),
1709
                                           void *cbdata)
1710
0
{
1711
    /*
1712
     * This is really an OSSL_PROVIDER that we created and cast to
1713
     * OSSL_CORE_HANDLE originally. Therefore it is safe to cast it back.
1714
     */
1715
0
    OSSL_PROVIDER *thisprov = (OSSL_PROVIDER *)handle;
1716
0
    OSSL_PROVIDER *prov;
1717
0
    OSSL_LIB_CTX *libctx = thisprov->libctx;
1718
0
    struct provider_store_st *store = NULL;
1719
0
    int ret = 0, i, max;
1720
0
    OSSL_PROVIDER_CHILD_CB *child_cb;
1721
0
    char *propsstr = NULL;
1722
1723
0
    if ((store = get_provider_store(libctx)) == NULL)
1724
0
        return 0;
1725
1726
0
    child_cb = OPENSSL_malloc(sizeof(*child_cb));
1727
0
    if (child_cb == NULL)
1728
0
        return 0;
1729
0
    child_cb->prov = thisprov;
1730
0
    child_cb->create_cb = create_cb;
1731
0
    child_cb->remove_cb = remove_cb;
1732
0
    child_cb->global_props_cb = global_props_cb;
1733
0
    child_cb->cbdata = cbdata;
1734
1735
0
    if (!CRYPTO_THREAD_write_lock(store->lock)) {
1736
0
        OPENSSL_free(child_cb);
1737
0
        return 0;
1738
0
    }
1739
0
    propsstr = evp_get_global_properties_str(libctx, 0);
1740
1741
0
    if (propsstr != NULL) {
1742
0
        global_props_cb(propsstr, cbdata);
1743
0
        OPENSSL_free(propsstr);
1744
0
    }
1745
0
    max = sk_OSSL_PROVIDER_num(store->providers);
1746
0
    for (i = 0; i < max; i++) {
1747
0
        int activated;
1748
1749
0
        prov = sk_OSSL_PROVIDER_value(store->providers, i);
1750
1751
0
        if (!CRYPTO_THREAD_read_lock(prov->flag_lock))
1752
0
            break;
1753
0
        activated = prov->flag_activated;
1754
0
        CRYPTO_THREAD_unlock(prov->flag_lock);
1755
        /*
1756
         * We hold the store lock while calling the user callback. This means
1757
         * that the user callback must be short and simple and not do anything
1758
         * likely to cause a deadlock. We don't hold the flag_lock during this
1759
         * call. In theory this means that another thread could deactivate it
1760
         * while we are calling create. This is ok because the other thread
1761
         * will also call remove_cb, but won't be able to do so until we release
1762
         * the store lock.
1763
         */
1764
0
        if (activated && !create_cb((OSSL_CORE_HANDLE *)prov, cbdata))
1765
0
            break;
1766
0
    }
1767
0
    if (i == max) {
1768
        /* Success */
1769
0
        ret = sk_OSSL_PROVIDER_CHILD_CB_push(store->child_cbs, child_cb);
1770
0
    }
1771
0
    if (i != max || ret <= 0) {
1772
        /* Failed during creation. Remove everything we just added */
1773
0
        for (; i >= 0; i--) {
1774
0
            prov = sk_OSSL_PROVIDER_value(store->providers, i);
1775
0
            remove_cb((OSSL_CORE_HANDLE *)prov, cbdata);
1776
0
        }
1777
0
        OPENSSL_free(child_cb);
1778
0
        ret = 0;
1779
0
    }
1780
0
    CRYPTO_THREAD_unlock(store->lock);
1781
1782
0
    return ret;
1783
0
}
1784
1785
static void ossl_provider_deregister_child_cb(const OSSL_CORE_HANDLE *handle)
1786
0
{
1787
    /*
1788
     * This is really an OSSL_PROVIDER that we created and cast to
1789
     * OSSL_CORE_HANDLE originally. Therefore it is safe to cast it back.
1790
     */
1791
0
    OSSL_PROVIDER *thisprov = (OSSL_PROVIDER *)handle;
1792
0
    OSSL_LIB_CTX *libctx = thisprov->libctx;
1793
0
    struct provider_store_st *store = NULL;
1794
0
    int i, max;
1795
0
    OSSL_PROVIDER_CHILD_CB *child_cb;
1796
1797
0
    if ((store = get_provider_store(libctx)) == NULL)
1798
0
        return;
1799
1800
0
    if (!CRYPTO_THREAD_write_lock(store->lock))
1801
0
        return;
1802
0
    max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
1803
0
    for (i = 0; i < max; i++) {
1804
0
        child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
1805
0
        if (child_cb->prov == thisprov) {
1806
            /* Found an entry */
1807
0
            sk_OSSL_PROVIDER_CHILD_CB_delete(store->child_cbs, i);
1808
0
            OPENSSL_free(child_cb);
1809
0
            break;
1810
0
        }
1811
0
    }
1812
0
    CRYPTO_THREAD_unlock(store->lock);
1813
0
}
1814
#endif
1815
1816
/*-
1817
 * Core functions for the provider
1818
 * ===============================
1819
 *
1820
 * This is the set of functions that the core makes available to the provider
1821
 */
1822
1823
/*
1824
 * This returns a list of Provider Object parameters with their types, for
1825
 * discovery.  We do not expect that many providers will use this, but one
1826
 * never knows.
1827
 */
1828
static const OSSL_PARAM param_types[] = {
1829
    OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
1830
    OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_PROV_NAME, OSSL_PARAM_UTF8_PTR,
1831
                    NULL, 0),
1832
#ifndef FIPS_MODULE
1833
    OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_MODULE_FILENAME, OSSL_PARAM_UTF8_PTR,
1834
                    NULL, 0),
1835
#endif
1836
    OSSL_PARAM_END
1837
};
1838
1839
/*
1840
 * Forward declare all the functions that are provided aa dispatch.
1841
 * This ensures that the compiler will complain if they aren't defined
1842
 * with the correct signature.
1843
 */
1844
static OSSL_FUNC_core_gettable_params_fn core_gettable_params;
1845
static OSSL_FUNC_core_get_params_fn core_get_params;
1846
static OSSL_FUNC_core_get_libctx_fn core_get_libctx;
1847
static OSSL_FUNC_core_thread_start_fn core_thread_start;
1848
#ifndef FIPS_MODULE
1849
static OSSL_FUNC_core_new_error_fn core_new_error;
1850
static OSSL_FUNC_core_set_error_debug_fn core_set_error_debug;
1851
static OSSL_FUNC_core_vset_error_fn core_vset_error;
1852
static OSSL_FUNC_core_set_error_mark_fn core_set_error_mark;
1853
static OSSL_FUNC_core_clear_last_error_mark_fn core_clear_last_error_mark;
1854
static OSSL_FUNC_core_pop_error_to_mark_fn core_pop_error_to_mark;
1855
OSSL_FUNC_BIO_new_file_fn ossl_core_bio_new_file;
1856
OSSL_FUNC_BIO_new_membuf_fn ossl_core_bio_new_mem_buf;
1857
OSSL_FUNC_BIO_read_ex_fn ossl_core_bio_read_ex;
1858
OSSL_FUNC_BIO_write_ex_fn ossl_core_bio_write_ex;
1859
OSSL_FUNC_BIO_gets_fn ossl_core_bio_gets;
1860
OSSL_FUNC_BIO_puts_fn ossl_core_bio_puts;
1861
OSSL_FUNC_BIO_up_ref_fn ossl_core_bio_up_ref;
1862
OSSL_FUNC_BIO_free_fn ossl_core_bio_free;
1863
OSSL_FUNC_BIO_vprintf_fn ossl_core_bio_vprintf;
1864
OSSL_FUNC_BIO_vsnprintf_fn BIO_vsnprintf;
1865
static OSSL_FUNC_self_test_cb_fn core_self_test_get_callback;
1866
static OSSL_FUNC_get_entropy_fn rand_get_entropy;
1867
static OSSL_FUNC_get_user_entropy_fn rand_get_user_entropy;
1868
static OSSL_FUNC_cleanup_entropy_fn rand_cleanup_entropy;
1869
static OSSL_FUNC_cleanup_user_entropy_fn rand_cleanup_user_entropy;
1870
static OSSL_FUNC_get_nonce_fn rand_get_nonce;
1871
static OSSL_FUNC_get_user_nonce_fn rand_get_user_nonce;
1872
static OSSL_FUNC_cleanup_nonce_fn rand_cleanup_nonce;
1873
static OSSL_FUNC_cleanup_user_nonce_fn rand_cleanup_user_nonce;
1874
#endif
1875
OSSL_FUNC_CRYPTO_malloc_fn CRYPTO_malloc;
1876
OSSL_FUNC_CRYPTO_zalloc_fn CRYPTO_zalloc;
1877
OSSL_FUNC_CRYPTO_free_fn CRYPTO_free;
1878
OSSL_FUNC_CRYPTO_clear_free_fn CRYPTO_clear_free;
1879
OSSL_FUNC_CRYPTO_realloc_fn CRYPTO_realloc;
1880
OSSL_FUNC_CRYPTO_clear_realloc_fn CRYPTO_clear_realloc;
1881
OSSL_FUNC_CRYPTO_secure_malloc_fn CRYPTO_secure_malloc;
1882
OSSL_FUNC_CRYPTO_secure_zalloc_fn CRYPTO_secure_zalloc;
1883
OSSL_FUNC_CRYPTO_secure_free_fn CRYPTO_secure_free;
1884
OSSL_FUNC_CRYPTO_secure_clear_free_fn CRYPTO_secure_clear_free;
1885
OSSL_FUNC_CRYPTO_secure_allocated_fn CRYPTO_secure_allocated;
1886
OSSL_FUNC_OPENSSL_cleanse_fn OPENSSL_cleanse;
1887
#ifndef FIPS_MODULE
1888
OSSL_FUNC_provider_register_child_cb_fn ossl_provider_register_child_cb;
1889
OSSL_FUNC_provider_deregister_child_cb_fn ossl_provider_deregister_child_cb;
1890
static OSSL_FUNC_provider_name_fn core_provider_get0_name;
1891
static OSSL_FUNC_provider_get0_provider_ctx_fn core_provider_get0_provider_ctx;
1892
static OSSL_FUNC_provider_get0_dispatch_fn core_provider_get0_dispatch;
1893
static OSSL_FUNC_provider_up_ref_fn core_provider_up_ref_intern;
1894
static OSSL_FUNC_provider_free_fn core_provider_free_intern;
1895
static OSSL_FUNC_core_obj_add_sigid_fn core_obj_add_sigid;
1896
static OSSL_FUNC_core_obj_create_fn core_obj_create;
1897
#endif
1898
1899
static const OSSL_PARAM *core_gettable_params(const OSSL_CORE_HANDLE *handle)
1900
0
{
1901
0
    return param_types;
1902
0
}
1903
1904
static int core_get_params(const OSSL_CORE_HANDLE *handle, OSSL_PARAM params[])
1905
0
{
1906
0
    int i;
1907
0
    OSSL_PARAM *p;
1908
    /*
1909
     * We created this object originally and we know it is actually an
1910
     * OSSL_PROVIDER *, so the cast is safe
1911
     */
1912
0
    OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1913
1914
0
    if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_VERSION)) != NULL)
1915
0
        OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR);
1916
0
    if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_PROV_NAME)) != NULL)
1917
0
        OSSL_PARAM_set_utf8_ptr(p, prov->name);
1918
1919
0
#ifndef FIPS_MODULE
1920
0
    if ((p = OSSL_PARAM_locate(params,
1921
0
                               OSSL_PROV_PARAM_CORE_MODULE_FILENAME)) != NULL)
1922
0
        OSSL_PARAM_set_utf8_ptr(p, ossl_provider_module_path(prov));
1923
0
#endif
1924
1925
0
    if (prov->parameters == NULL)
1926
0
        return 1;
1927
1928
0
    for (i = 0; i < sk_INFOPAIR_num(prov->parameters); i++) {
1929
0
        INFOPAIR *pair = sk_INFOPAIR_value(prov->parameters, i);
1930
1931
0
        if ((p = OSSL_PARAM_locate(params, pair->name)) != NULL)
1932
0
            OSSL_PARAM_set_utf8_ptr(p, pair->value);
1933
0
    }
1934
0
    return 1;
1935
0
}
1936
1937
static OPENSSL_CORE_CTX *core_get_libctx(const OSSL_CORE_HANDLE *handle)
1938
661
{
1939
    /*
1940
     * We created this object originally and we know it is actually an
1941
     * OSSL_PROVIDER *, so the cast is safe
1942
     */
1943
661
    OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1944
1945
    /*
1946
     * Using ossl_provider_libctx would be wrong as that returns
1947
     * NULL for |prov| == NULL and NULL libctx has a special meaning
1948
     * that does not apply here. Here |prov| == NULL can happen only in
1949
     * case of a coding error.
1950
     */
1951
661
    assert(prov != NULL);
1952
661
    return (OPENSSL_CORE_CTX *)prov->libctx;
1953
661
}
1954
1955
static int core_thread_start(const OSSL_CORE_HANDLE *handle,
1956
                             OSSL_thread_stop_handler_fn handfn,
1957
                             void *arg)
1958
0
{
1959
    /*
1960
     * We created this object originally and we know it is actually an
1961
     * OSSL_PROVIDER *, so the cast is safe
1962
     */
1963
0
    OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
1964
1965
0
    return ossl_init_thread_start(prov, arg, handfn);
1966
0
}
1967
1968
/*
1969
 * The FIPS module inner provider doesn't implement these.  They aren't
1970
 * needed there, since the FIPS module upcalls are always the outer provider
1971
 * ones.
1972
 */
1973
#ifndef FIPS_MODULE
1974
/*
1975
 * These error functions should use |handle| to select the proper
1976
 * library context to report in the correct error stack if error
1977
 * stacks become tied to the library context.
1978
 * We cannot currently do that since there's no support for it in the
1979
 * ERR subsystem.
1980
 */
1981
static void core_new_error(const OSSL_CORE_HANDLE *handle)
1982
0
{
1983
0
    ERR_new();
1984
0
}
1985
1986
static void core_set_error_debug(const OSSL_CORE_HANDLE *handle,
1987
                                 const char *file, int line, const char *func)
1988
0
{
1989
0
    ERR_set_debug(file, line, func);
1990
0
}
1991
1992
static void core_vset_error(const OSSL_CORE_HANDLE *handle,
1993
                            uint32_t reason, const char *fmt, va_list args)
1994
0
{
1995
    /*
1996
     * We created this object originally and we know it is actually an
1997
     * OSSL_PROVIDER *, so the cast is safe
1998
     */
1999
0
    OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
2000
2001
    /*
2002
     * If the uppermost 8 bits are non-zero, it's an OpenSSL library
2003
     * error and will be treated as such.  Otherwise, it's a new style
2004
     * provider error and will be treated as such.
2005
     */
2006
0
    if (ERR_GET_LIB(reason) != 0) {
2007
0
        ERR_vset_error(ERR_GET_LIB(reason), ERR_GET_REASON(reason), fmt, args);
2008
0
    } else {
2009
0
        ERR_vset_error(prov->error_lib, (int)reason, fmt, args);
2010
0
    }
2011
0
}
2012
2013
static int core_set_error_mark(const OSSL_CORE_HANDLE *handle)
2014
0
{
2015
0
    return ERR_set_mark();
2016
0
}
2017
2018
static int core_clear_last_error_mark(const OSSL_CORE_HANDLE *handle)
2019
0
{
2020
0
    return ERR_clear_last_mark();
2021
0
}
2022
2023
static int core_pop_error_to_mark(const OSSL_CORE_HANDLE *handle)
2024
0
{
2025
0
    return ERR_pop_to_mark();
2026
0
}
2027
2028
static void core_self_test_get_callback(OPENSSL_CORE_CTX *libctx,
2029
                                        OSSL_CALLBACK **cb, void **cbarg)
2030
0
{
2031
0
    OSSL_SELF_TEST_get_callback((OSSL_LIB_CTX *)libctx, cb, cbarg);
2032
0
}
2033
2034
static size_t rand_get_entropy(const OSSL_CORE_HANDLE *handle,
2035
                               unsigned char **pout, int entropy,
2036
                               size_t min_len, size_t max_len)
2037
0
{
2038
0
    return ossl_rand_get_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
2039
0
                                 pout, entropy, min_len, max_len);
2040
0
}
2041
2042
static size_t rand_get_user_entropy(const OSSL_CORE_HANDLE *handle,
2043
                                    unsigned char **pout, int entropy,
2044
                                    size_t min_len, size_t max_len)
2045
208
{
2046
208
    return ossl_rand_get_user_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
2047
208
                                      pout, entropy, min_len, max_len);
2048
208
}
2049
2050
static void rand_cleanup_entropy(const OSSL_CORE_HANDLE *handle,
2051
                                 unsigned char *buf, size_t len)
2052
0
{
2053
0
    ossl_rand_cleanup_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
2054
0
                              buf, len);
2055
0
}
2056
2057
static void rand_cleanup_user_entropy(const OSSL_CORE_HANDLE *handle,
2058
                                      unsigned char *buf, size_t len)
2059
208
{
2060
208
    ossl_rand_cleanup_user_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
2061
208
                                   buf, len);
2062
208
}
2063
2064
static size_t rand_get_nonce(const OSSL_CORE_HANDLE *handle,
2065
                             unsigned char **pout,
2066
                             size_t min_len, size_t max_len,
2067
                             const void *salt, size_t salt_len)
2068
0
{
2069
0
    return ossl_rand_get_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
2070
0
                               pout, min_len, max_len, salt, salt_len);
2071
0
}
2072
2073
static size_t rand_get_user_nonce(const OSSL_CORE_HANDLE *handle,
2074
                                  unsigned char **pout,
2075
                                  size_t min_len, size_t max_len,
2076
                                  const void *salt, size_t salt_len)
2077
100
{
2078
100
    return ossl_rand_get_user_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
2079
100
                                    pout, min_len, max_len, salt, salt_len);
2080
100
}
2081
2082
static void rand_cleanup_nonce(const OSSL_CORE_HANDLE *handle,
2083
                               unsigned char *buf, size_t len)
2084
0
{
2085
0
    ossl_rand_cleanup_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
2086
0
                            buf, len);
2087
0
}
2088
2089
static void rand_cleanup_user_nonce(const OSSL_CORE_HANDLE *handle,
2090
                               unsigned char *buf, size_t len)
2091
100
{
2092
100
    ossl_rand_cleanup_user_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
2093
100
                                 buf, len);
2094
100
}
2095
2096
static const char *core_provider_get0_name(const OSSL_CORE_HANDLE *prov)
2097
0
{
2098
0
    return OSSL_PROVIDER_get0_name((const OSSL_PROVIDER *)prov);
2099
0
}
2100
2101
static void *core_provider_get0_provider_ctx(const OSSL_CORE_HANDLE *prov)
2102
0
{
2103
0
    return OSSL_PROVIDER_get0_provider_ctx((const OSSL_PROVIDER *)prov);
2104
0
}
2105
2106
static const OSSL_DISPATCH *
2107
core_provider_get0_dispatch(const OSSL_CORE_HANDLE *prov)
2108
0
{
2109
0
    return OSSL_PROVIDER_get0_dispatch((const OSSL_PROVIDER *)prov);
2110
0
}
2111
2112
static int core_provider_up_ref_intern(const OSSL_CORE_HANDLE *prov,
2113
                                       int activate)
2114
0
{
2115
0
    return provider_up_ref_intern((OSSL_PROVIDER *)prov, activate);
2116
0
}
2117
2118
static int core_provider_free_intern(const OSSL_CORE_HANDLE *prov,
2119
                                     int deactivate)
2120
0
{
2121
0
    return provider_free_intern((OSSL_PROVIDER *)prov, deactivate);
2122
0
}
2123
2124
static int core_obj_add_sigid(const OSSL_CORE_HANDLE *prov,
2125
                              const char *sign_name, const char *digest_name,
2126
                              const char *pkey_name)
2127
0
{
2128
0
    int sign_nid = OBJ_txt2nid(sign_name);
2129
0
    int digest_nid = NID_undef;
2130
0
    int pkey_nid = OBJ_txt2nid(pkey_name);
2131
2132
0
    if (digest_name != NULL && digest_name[0] != '\0'
2133
0
        && (digest_nid = OBJ_txt2nid(digest_name)) == NID_undef)
2134
0
            return 0;
2135
2136
0
    if (sign_nid == NID_undef)
2137
0
        return 0;
2138
2139
    /*
2140
     * Check if it already exists. This is a success if so (even if we don't
2141
     * have nids for the digest/pkey)
2142
     */
2143
0
    if (OBJ_find_sigid_algs(sign_nid, NULL, NULL))
2144
0
        return 1;
2145
2146
0
    if (pkey_nid == NID_undef)
2147
0
        return 0;
2148
2149
0
    return OBJ_add_sigid(sign_nid, digest_nid, pkey_nid);
2150
0
}
2151
2152
static int core_obj_create(const OSSL_CORE_HANDLE *prov, const char *oid,
2153
                           const char *sn, const char *ln)
2154
0
{
2155
    /* Check if it already exists and create it if not */
2156
0
    return OBJ_txt2nid(oid) != NID_undef
2157
0
           || OBJ_create(oid, sn, ln) != NID_undef;
2158
0
}
2159
#endif /* FIPS_MODULE */
2160
2161
/*
2162
 * Functions provided by the core.
2163
 */
2164
static const OSSL_DISPATCH core_dispatch_[] = {
2165
    { OSSL_FUNC_CORE_GETTABLE_PARAMS, (void (*)(void))core_gettable_params },
2166
    { OSSL_FUNC_CORE_GET_PARAMS, (void (*)(void))core_get_params },
2167
    { OSSL_FUNC_CORE_GET_LIBCTX, (void (*)(void))core_get_libctx },
2168
    { OSSL_FUNC_CORE_THREAD_START, (void (*)(void))core_thread_start },
2169
#ifndef FIPS_MODULE
2170
    { OSSL_FUNC_CORE_NEW_ERROR, (void (*)(void))core_new_error },
2171
    { OSSL_FUNC_CORE_SET_ERROR_DEBUG, (void (*)(void))core_set_error_debug },
2172
    { OSSL_FUNC_CORE_VSET_ERROR, (void (*)(void))core_vset_error },
2173
    { OSSL_FUNC_CORE_SET_ERROR_MARK, (void (*)(void))core_set_error_mark },
2174
    { OSSL_FUNC_CORE_CLEAR_LAST_ERROR_MARK,
2175
      (void (*)(void))core_clear_last_error_mark },
2176
    { OSSL_FUNC_CORE_POP_ERROR_TO_MARK, (void (*)(void))core_pop_error_to_mark },
2177
    { OSSL_FUNC_BIO_NEW_FILE, (void (*)(void))ossl_core_bio_new_file },
2178
    { OSSL_FUNC_BIO_NEW_MEMBUF, (void (*)(void))ossl_core_bio_new_mem_buf },
2179
    { OSSL_FUNC_BIO_READ_EX, (void (*)(void))ossl_core_bio_read_ex },
2180
    { OSSL_FUNC_BIO_WRITE_EX, (void (*)(void))ossl_core_bio_write_ex },
2181
    { OSSL_FUNC_BIO_GETS, (void (*)(void))ossl_core_bio_gets },
2182
    { OSSL_FUNC_BIO_PUTS, (void (*)(void))ossl_core_bio_puts },
2183
    { OSSL_FUNC_BIO_CTRL, (void (*)(void))ossl_core_bio_ctrl },
2184
    { OSSL_FUNC_BIO_UP_REF, (void (*)(void))ossl_core_bio_up_ref },
2185
    { OSSL_FUNC_BIO_FREE, (void (*)(void))ossl_core_bio_free },
2186
    { OSSL_FUNC_BIO_VPRINTF, (void (*)(void))ossl_core_bio_vprintf },
2187
    { OSSL_FUNC_BIO_VSNPRINTF, (void (*)(void))BIO_vsnprintf },
2188
    { OSSL_FUNC_SELF_TEST_CB, (void (*)(void))core_self_test_get_callback },
2189
    { OSSL_FUNC_GET_ENTROPY, (void (*)(void))rand_get_entropy },
2190
    { OSSL_FUNC_GET_USER_ENTROPY, (void (*)(void))rand_get_user_entropy },
2191
    { OSSL_FUNC_CLEANUP_ENTROPY, (void (*)(void))rand_cleanup_entropy },
2192
    { OSSL_FUNC_CLEANUP_USER_ENTROPY, (void (*)(void))rand_cleanup_user_entropy },
2193
    { OSSL_FUNC_GET_NONCE, (void (*)(void))rand_get_nonce },
2194
    { OSSL_FUNC_GET_USER_NONCE, (void (*)(void))rand_get_user_nonce },
2195
    { OSSL_FUNC_CLEANUP_NONCE, (void (*)(void))rand_cleanup_nonce },
2196
    { OSSL_FUNC_CLEANUP_USER_NONCE, (void (*)(void))rand_cleanup_user_nonce },
2197
#endif
2198
    { OSSL_FUNC_CRYPTO_MALLOC, (void (*)(void))CRYPTO_malloc },
2199
    { OSSL_FUNC_CRYPTO_ZALLOC, (void (*)(void))CRYPTO_zalloc },
2200
    { OSSL_FUNC_CRYPTO_FREE, (void (*)(void))CRYPTO_free },
2201
    { OSSL_FUNC_CRYPTO_CLEAR_FREE, (void (*)(void))CRYPTO_clear_free },
2202
    { OSSL_FUNC_CRYPTO_REALLOC, (void (*)(void))CRYPTO_realloc },
2203
    { OSSL_FUNC_CRYPTO_CLEAR_REALLOC, (void (*)(void))CRYPTO_clear_realloc },
2204
    { OSSL_FUNC_CRYPTO_SECURE_MALLOC, (void (*)(void))CRYPTO_secure_malloc },
2205
    { OSSL_FUNC_CRYPTO_SECURE_ZALLOC, (void (*)(void))CRYPTO_secure_zalloc },
2206
    { OSSL_FUNC_CRYPTO_SECURE_FREE, (void (*)(void))CRYPTO_secure_free },
2207
    { OSSL_FUNC_CRYPTO_SECURE_CLEAR_FREE,
2208
        (void (*)(void))CRYPTO_secure_clear_free },
2209
    { OSSL_FUNC_CRYPTO_SECURE_ALLOCATED,
2210
        (void (*)(void))CRYPTO_secure_allocated },
2211
    { OSSL_FUNC_OPENSSL_CLEANSE, (void (*)(void))OPENSSL_cleanse },
2212
#ifndef FIPS_MODULE
2213
    { OSSL_FUNC_PROVIDER_REGISTER_CHILD_CB,
2214
        (void (*)(void))ossl_provider_register_child_cb },
2215
    { OSSL_FUNC_PROVIDER_DEREGISTER_CHILD_CB,
2216
        (void (*)(void))ossl_provider_deregister_child_cb },
2217
    { OSSL_FUNC_PROVIDER_NAME,
2218
        (void (*)(void))core_provider_get0_name },
2219
    { OSSL_FUNC_PROVIDER_GET0_PROVIDER_CTX,
2220
        (void (*)(void))core_provider_get0_provider_ctx },
2221
    { OSSL_FUNC_PROVIDER_GET0_DISPATCH,
2222
        (void (*)(void))core_provider_get0_dispatch },
2223
    { OSSL_FUNC_PROVIDER_UP_REF,
2224
        (void (*)(void))core_provider_up_ref_intern },
2225
    { OSSL_FUNC_PROVIDER_FREE,
2226
        (void (*)(void))core_provider_free_intern },
2227
    { OSSL_FUNC_CORE_OBJ_ADD_SIGID, (void (*)(void))core_obj_add_sigid },
2228
    { OSSL_FUNC_CORE_OBJ_CREATE, (void (*)(void))core_obj_create },
2229
#endif
2230
    { 0, NULL }
2231
};
2232
static const OSSL_DISPATCH *core_dispatch = core_dispatch_;