crypto/provider.c

   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/err.h>
  11 #include <openssl/cryptoerr.h>
  12 #include <openssl/provider.h>
  13 #include "internal/provider.h"
  14
  15 OSSL_PROVIDER *OSSL_PROVIDER_load(OPENSSL_CTX *libctx, const char *name)
  16 {
  17     OSSL_PROVIDER *prov = NULL;
  18
  19     /* Find it or create it */
  20     if ((prov = ossl_provider_find(libctx, name)) == NULL
  21         && (prov = ossl_provider_new(libctx, name, NULL)) == NULL)
  22         return NULL;
  23
  24     if (!ossl_provider_activate(prov)) {
  25         ossl_provider_free(prov);
  26         return NULL;
  27     }
  28
  29     return prov;
  30 }
  31
  32 int OSSL_PROVIDER_unload(OSSL_PROVIDER *prov)
  33 {
  34     ossl_provider_free(prov);
  35     return 1;
  36 }
  37
  38 const OSSL_ITEM *OSSL_PROVIDER_get_param_types(const OSSL_PROVIDER *prov)
  39 {
  40     return ossl_provider_get_param_types(prov);
  41 }
  42
  43 int OSSL_PROVIDER_get_params(const OSSL_PROVIDER *prov,
  44                              const OSSL_PARAM params[])
  45 {
  46     return ossl_provider_get_params(prov, params);
  47 }
  48
  49 int OSSL_PROVIDER_add_builtin(OPENSSL_CTX *libctx, const char *name,
  50                               OSSL_provider_init_fn *init_fn)
  51 {
  52     OSSL_PROVIDER *prov = NULL;
  53
  54     if (name == NULL || init_fn == NULL) {
  55         CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_ADD_BUILTIN,
  56                   ERR_R_PASSED_NULL_PARAMETER);
  57         return 0;
  58     }
  59
  60     /* Create it */
  61     if ((prov = ossl_provider_new(libctx, name, init_fn)) == NULL)
  62         return 0;
  63
  64     /*
  65      * It's safely stored in the internal store at this point,
  66      * free the returned extra reference
  67      */
  68     ossl_provider_free(prov);
  69
  70     return 1;
  71 }