include/internal/provider.h

   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 #ifndef OSSL_INTERNAL_PROVIDER_H
  11 # define OSSL_INTERNAL_PROVIDER_H
  12 # pragma once
  13
  14 # include <openssl/core.h>
  15 # include <openssl/core_dispatch.h>
  16 # include "internal/dso.h"
  17 # include "internal/symhacks.h"
  18
  19 # ifdef __cplusplus
  20 extern "C" {
  21 # endif
  22
  23 /*
  24  * namespaces:
  25  *
  26  * ossl_provider_       Provider Object internal API
  27  * OSSL_PROVIDER        Provider Object
  28  */
  29
  30 /* Provider Object finder, constructor and destructor */
  31 OSSL_PROVIDER *ossl_provider_find(OSSL_LIB_CTX *libctx, const char *name,
  32                                   int noconfig);
  33 OSSL_PROVIDER *ossl_provider_new(OSSL_LIB_CTX *libctx, const char *name,
  34                                  OSSL_provider_init_fn *init_function,
  35                                  int noconfig);
  36 int ossl_provider_up_ref(OSSL_PROVIDER *prov);
  37 void ossl_provider_free(OSSL_PROVIDER *prov);
  38
  39 /* Setters */
  40 int ossl_provider_set_fallback(OSSL_PROVIDER *prov);
  41 int ossl_provider_set_module_path(OSSL_PROVIDER *prov, const char *module_path);
  42 int ossl_provider_add_parameter(OSSL_PROVIDER *prov, const char *name,
  43                                 const char *value);
  44 int ossl_provider_set_child(OSSL_PROVIDER *prov, const OSSL_CORE_HANDLE *handle);
  45 const OSSL_CORE_HANDLE *ossl_provider_get_parent(OSSL_PROVIDER *prov);
  46 int ossl_provider_up_ref_parent(OSSL_PROVIDER *prov, int activate);
  47 int ossl_provider_free_parent(OSSL_PROVIDER *prov, int deactivate);
  48
  49 /* Disable fallback loading */
  50 int ossl_provider_disable_fallback_loading(OSSL_LIB_CTX *libctx);
  51
  52 /*
  53  * Activate the Provider
  54  * If the Provider is a module, the module will be loaded
  55  */
  56 int ossl_provider_activate(OSSL_PROVIDER *prov, int retain_fallbacks,
  57                            int upcalls);
  58 int ossl_provider_deactivate(OSSL_PROVIDER *prov);
  59 /* Check if the provider is available (activated) */
  60 int ossl_provider_available(OSSL_PROVIDER *prov);
  61
  62 /* Return pointer to the provider's context */
  63 void *ossl_provider_ctx(const OSSL_PROVIDER *prov);
  64
  65 /* Iterate over all loaded providers */
  66 int ossl_provider_doall_activated(OSSL_LIB_CTX *,
  67                                   int (*cb)(OSSL_PROVIDER *provider,
  68                                             void *cbdata),
  69                                   void *cbdata);
  70
  71 /* Getters for other library functions */
  72 const char *ossl_provider_name(const OSSL_PROVIDER *prov);
  73 const DSO *ossl_provider_dso(const OSSL_PROVIDER *prov);
  74 const char *ossl_provider_module_name(const OSSL_PROVIDER *prov);
  75 const char *ossl_provider_module_path(const OSSL_PROVIDER *prov);
  76 void *ossl_provider_prov_ctx(const OSSL_PROVIDER *prov);
  77 const OSSL_DISPATCH *ossl_provider_get0_dispatch(const OSSL_PROVIDER *prov);
  78 OSSL_LIB_CTX *ossl_provider_libctx(const OSSL_PROVIDER *prov);
  79
  80 /* Thin wrappers around calls to the provider */
  81 void ossl_provider_teardown(const OSSL_PROVIDER *prov);
  82 const OSSL_PARAM *ossl_provider_gettable_params(const OSSL_PROVIDER *prov);
  83 int ossl_provider_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[]);
  84 int ossl_provider_get_capabilities(const OSSL_PROVIDER *prov,
  85                                    const char *capability,
  86                                    OSSL_CALLBACK *cb,
  87                                    void *arg);
  88 int ossl_provider_self_test(const OSSL_PROVIDER *prov);
  89 const OSSL_ALGORITHM *ossl_provider_query_operation(const OSSL_PROVIDER *prov,
  90                                                     int operation_id,
  91                                                     int *no_cache);
  92 void ossl_provider_unquery_operation(const OSSL_PROVIDER *prov,
  93                                      int operation_id,
  94                                      const OSSL_ALGORITHM *algs);
  95
  96 /* Cache of bits to see if we already queried an operation */
  97 int ossl_provider_set_operation_bit(OSSL_PROVIDER *provider, size_t bitnum);
  98 int ossl_provider_test_operation_bit(OSSL_PROVIDER *provider, size_t bitnum,
  99                                      int *result);
 100 int ossl_provider_clear_all_operation_bits(OSSL_LIB_CTX *libctx);
 101
 102 /* Configuration */
 103 void ossl_provider_add_conf_module(void);
 104
 105 /* Child providers */
 106 int ossl_provider_init_child_providers(OSSL_LIB_CTX *ctx);
 107 int ossl_provider_init_as_child(OSSL_LIB_CTX *ctx,
 108                                 const OSSL_CORE_HANDLE *handle,
 109                                 const OSSL_DISPATCH *in);
 110
 111 # ifdef __cplusplus
 112 }
 113 # endif
 114
 115 #endif