text: /*
   * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
   *
   * Licensed under the Apache License 2.0 (the "License").  You may not use
   * this file except in compliance with the License.  You can obtain a copy
   * in the file LICENSE in the source distribution or at
   * https://www.openssl.org/source/license.html
   */
  
  #ifndef OSSL_INTERNAL_PROVIDER_H
  # define OSSL_INTERNAL_PROVIDER_H
  
  # include <openssl/core.h>
  # include "internal/dso.h"
  # include "internal/symhacks.h"
  
  # ifdef __cplusplus
  extern "C" {
  # endif
  
  /*
   * namespaces:
   *
   * ossl_provider_       Provider Object internal API
   * OSSL_PROVIDER        Provider Object
   */
  
  /* Provider Object finder, constructor and destructor */
  OSSL_PROVIDER *ossl_provider_find(OPENSSL_CTX *libctx, const char *name);
  OSSL_PROVIDER *ossl_provider_new(OPENSSL_CTX *libctx, const char *name,
                                   OSSL_provider_init_fn *init_function);
  int ossl_provider_upref(OSSL_PROVIDER *prov);
  void ossl_provider_free(OSSL_PROVIDER *prov);
  
  /* Setters */
  int ossl_provider_add_module_location(OSSL_PROVIDER *prov, const char *loc);
  
  /*
   * Activate the Provider
   * If the Provider is a module, the module will be loaded
   * Inactivation is done by freeing the Provider
   */
  int ossl_provider_activate(OSSL_PROVIDER *prov);
  
  /* Getters for other library functions */
  const char *ossl_provider_name(OSSL_PROVIDER *prov);
  const DSO *ossl_provider_dso(OSSL_PROVIDER *prov);
  const char *ossl_provider_module_name(OSSL_PROVIDER *prov);
  const char *ossl_provider_module_path(OSSL_PROVIDER *prov);
  
  /* Thin wrappers around calls to the provider */
  void ossl_provider_teardown(const OSSL_PROVIDER *prov);
  const OSSL_ITEM *ossl_provider_get_param_types(const OSSL_PROVIDER *prov);
  int ossl_provider_get_params(const OSSL_PROVIDER *prov,
                               const OSSL_PARAM params[]);
  
  # ifdef __cplusplus
  }
  # endif
  
  #endif
  