crypto/provider.c

   1 /*
   2  * Copyright 2019-2021 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                                       int retain_fallbacks)
  18 {
  19     OSSL_PROVIDER *prov = NULL;
  20     int isnew = 0;
  21
  22     /* Find it or create it */
  23     if ((prov = ossl_provider_find(libctx, name, 0)) == NULL) {
  24         if ((prov = ossl_provider_new(libctx, name, NULL, 0)) == NULL)
  25             return NULL;
  26         isnew = 1;
  27     }
  28
  29     if (!ossl_provider_activate(prov, 1, 0)) {
  30         ossl_provider_free(prov);
  31         return NULL;
  32     }
  33
  34     if (isnew && !ossl_provider_add_to_store(prov, retain_fallbacks)) {
  35         ossl_provider_deactivate(prov);
  36         ossl_provider_free(prov);
  37         return NULL;
  38     }
  39
  40     return prov;
  41 }
  42
  43 OSSL_PROVIDER *OSSL_PROVIDER_load(OSSL_LIB_CTX *libctx, const char *name)
  44 {
  45     /* Any attempt to load a provider disables auto-loading of defaults */
  46     if (ossl_provider_disable_fallback_loading(libctx))
  47         return OSSL_PROVIDER_try_load(libctx, name, 0);
  48     return NULL;
  49 }
  50
  51 int OSSL_PROVIDER_unload(OSSL_PROVIDER *prov)
  52 {
  53     if (!ossl_provider_deactivate(prov))
  54         return 0;
  55     ossl_provider_free(prov);
  56     return 1;
  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_unquery_operation(const OSSL_PROVIDER *prov,
  77                                      int operation_id,
  78                                      const OSSL_ALGORITHM *algs)
  79 {
  80     ossl_provider_unquery_operation(prov, operation_id, algs);
  81 }
  82
  83 void *OSSL_PROVIDER_get0_provider_ctx(const OSSL_PROVIDER *prov)
  84 {
  85     return ossl_provider_prov_ctx(prov);
  86 }
  87
  88 const OSSL_DISPATCH *OSSL_PROVIDER_get0_dispatch(const OSSL_PROVIDER *prov)
  89 {
  90     return ossl_provider_get0_dispatch(prov);
  91 }
  92
  93 int OSSL_PROVIDER_self_test(const OSSL_PROVIDER *prov)
  94 {
  95     return ossl_provider_self_test(prov);
  96 }
  97
  98 int OSSL_PROVIDER_get_capabilities(const OSSL_PROVIDER *prov,
  99                                    const char *capability,
 100                                    OSSL_CALLBACK *cb,
 101                                    void *arg)
 102 {
 103     return ossl_provider_get_capabilities(prov, capability, cb, arg);
 104 }
 105
 106 const char *OSSL_PROVIDER_get0_name(const OSSL_PROVIDER *prov)
 107 {
 108     return ossl_provider_name(prov);
 109 }
 110
 111 int OSSL_PROVIDER_do_all(OSSL_LIB_CTX *ctx,
 112                          int (*cb)(OSSL_PROVIDER *provider,
 113                                    void *cbdata),
 114                          void *cbdata)
 115 {
 116     return ossl_provider_doall_activated(ctx, cb, cbdata);
 117 }