crypto/provider.c

   1 /*
   2  * Copyright 2019-2020 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, 0)) == NULL
  21         && (prov = ossl_provider_new(libctx, name, NULL, 0)) == 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 int OSSL_PROVIDER_available(OPENSSL_CTX *libctx, const char *name)
  39 {
  40     OSSL_PROVIDER *prov = NULL;
  41     int available = 0;
  42
  43     /* Find it or create it */
  44     prov = ossl_provider_find(libctx, name, 0);
  45     available = ossl_provider_available(prov);
  46     ossl_provider_free(prov);
  47     return available;
  48 }
  49
  50 const OSSL_PARAM *OSSL_PROVIDER_gettable_params(const OSSL_PROVIDER *prov)
  51 {
  52     return ossl_provider_gettable_params(prov);
  53 }
  54
  55 int OSSL_PROVIDER_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
  56 {
  57     return ossl_provider_get_params(prov, params);
  58 }
  59
  60 const OSSL_ALGORITHM *OSSL_PROVIDER_query_operation(const OSSL_PROVIDER *prov,
  61                                                     int operation_id,
  62                                                     int *no_cache)
  63 {
  64     return ossl_provider_query_operation(prov, operation_id, no_cache);
  65 }
  66
  67 void *OSSL_PROVIDER_get0_provider_ctx(const OSSL_PROVIDER *prov)
  68 {
  69     return ossl_provider_prov_ctx(prov);
  70 }
  71
  72 int OSSL_PROVIDER_get_capabilities(const OSSL_PROVIDER *prov,
  73                                    const char *capability,
  74                                    OSSL_CALLBACK *cb,
  75                                    void *arg)
  76 {
  77     return ossl_provider_get_capabilities(prov, capability, cb, arg);
  78 }
  79
  80 int OSSL_PROVIDER_add_builtin(OPENSSL_CTX *libctx, const char *name,
  81                               OSSL_provider_init_fn *init_fn)
  82 {
  83     OSSL_PROVIDER *prov = NULL;
  84
  85     if (name == NULL || init_fn == NULL) {
  86         CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_ADD_BUILTIN,
  87                   ERR_R_PASSED_NULL_PARAMETER);
  88         return 0;
  89     }
  90
  91     /* Create it */
  92     if ((prov = ossl_provider_new(libctx, name, init_fn, 0)) == NULL)
  93         return 0;
  94
  95     /*
  96      * It's safely stored in the internal store at this point,
  97      * free the returned extra reference
  98      */
  99     ossl_provider_free(prov);
 100
 101     return 1;
 102 }
 103
 104 const char *OSSL_PROVIDER_name(const OSSL_PROVIDER *prov)
 105 {
 106     return ossl_provider_name(prov);
 107 }
 108
 109 int OSSL_PROVIDER_do_all(OPENSSL_CTX *ctx,
 110                          int (*cb)(OSSL_PROVIDER *provider,
 111                                    void *cbdata),
 112                          void *cbdata)
 113 {
 114     return ossl_provider_forall_loaded(ctx, cb, cbdata);
 115 }