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 <openssl/core_names.h>
  14 #include "internal/provider.h"
  15
  16 OSSL_PROVIDER *OSSL_PROVIDER_try_load(OSSL_LIB_CTX *libctx, const char *name)
  17 {
  18     OSSL_PROVIDER *prov = NULL;
  19
  20     /* Find it or create it */
  21     if ((prov = ossl_provider_find(libctx, name, 0)) == NULL
  22         && (prov = ossl_provider_new(libctx, name, NULL, 0)) == NULL)
  23         return NULL;
  24
  25     if (!ossl_provider_activate(prov)) {
  26         ossl_provider_free(prov);
  27         return NULL;
  28     }
  29
  30     return prov;
  31 }
  32
  33 OSSL_PROVIDER *OSSL_PROVIDER_load(OSSL_LIB_CTX *libctx, const char *name)
  34 {
  35     /* Any attempt to load a provider disables auto-loading of defaults */
  36     if (ossl_provider_disable_fallback_loading(libctx))
  37         return OSSL_PROVIDER_try_load(libctx, name);
  38     return NULL;
  39 }
  40
  41 int OSSL_PROVIDER_unload(OSSL_PROVIDER *prov)
  42 {
  43     ossl_provider_free(prov);
  44     return 1;
  45 }
  46
  47 int OSSL_PROVIDER_available(OSSL_LIB_CTX *libctx, const char *name)
  48 {
  49     OSSL_PROVIDER *prov = NULL;
  50     int available = 0;
  51
  52     /* Find it or create it */
  53     prov = ossl_provider_find(libctx, name, 0);
  54     available = ossl_provider_available(prov);
  55     ossl_provider_free(prov);
  56     return available;
  57 }
  58
  59 const OSSL_PARAM *OSSL_PROVIDER_gettable_params(const OSSL_PROVIDER *prov)
  60 {
  61     return ossl_provider_gettable_params(prov);
  62 }
  63
  64 int OSSL_PROVIDER_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
  65 {
  66     return ossl_provider_get_params(prov, params);
  67 }
  68
  69 const OSSL_ALGORITHM *OSSL_PROVIDER_query_operation(const OSSL_PROVIDER *prov,
  70                                                     int operation_id,
  71                                                     int *no_cache)
  72 {
  73     return ossl_provider_query_operation(prov, operation_id, no_cache);
  74 }
  75
  76 void *OSSL_PROVIDER_get0_provider_ctx(const OSSL_PROVIDER *prov)
  77 {
  78     return ossl_provider_prov_ctx(prov);
  79 }
  80
  81 int OSSL_PROVIDER_self_test(const OSSL_PROVIDER *prov)
  82 {
  83     return ossl_provider_self_test(prov);
  84 }
  85
  86 int OSSL_PROVIDER_get_capabilities(const OSSL_PROVIDER *prov,
  87                                    const char *capability,
  88                                    OSSL_CALLBACK *cb,
  89                                    void *arg)
  90 {
  91     return ossl_provider_get_capabilities(prov, capability, cb, arg);
  92 }
  93
  94 int OSSL_PROVIDER_add_builtin(OSSL_LIB_CTX *libctx, const char *name,
  95                               OSSL_provider_init_fn *init_fn)
  96 {
  97     OSSL_PROVIDER *prov = NULL;
  98
  99     if (name == NULL || init_fn == NULL) {
 100         CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_ADD_BUILTIN,
 101                   ERR_R_PASSED_NULL_PARAMETER);
 102         return 0;
 103     }
 104
 105     /* Create it */
 106     if ((prov = ossl_provider_new(libctx, name, init_fn, 0)) == NULL)
 107         return 0;
 108
 109     /*
 110      * It's safely stored in the internal store at this point,
 111      * free the returned extra reference
 112      */
 113     ossl_provider_free(prov);
 114
 115     return 1;
 116 }
 117
 118 const char *OSSL_PROVIDER_name(const OSSL_PROVIDER *prov)
 119 {
 120     return ossl_provider_name(prov);
 121 }
 122
 123 int OSSL_PROVIDER_do_all(OSSL_LIB_CTX *ctx,
 124                          int (*cb)(OSSL_PROVIDER *provider,
 125                                    void *cbdata),
 126                          void *cbdata)
 127 {
 128     return ossl_provider_forall_loaded(ctx, cb, cbdata);
 129 }