include/openssl/core_numbers.h

   1 /*
   2  * Copyright 2019 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_CORE_NUMBERS_H
  11 # define OSSL_CORE_NUMBERS_H
  12
  13 # include <openssl/core.h>
  14
  15 # ifdef __cplusplus
  16 extern "C" {
  17 # endif
  18
  19 /*-
  20  * Identities
  21  * ----------
  22  *
  23  * All series start with 1, to allow 0 to be an array terminator.
  24  * For any FUNC identity, we also provide a function signature typedef
  25  * and a static inline function to extract a function pointer from a
  26  * OSSL_DISPATCH element in a type safe manner.
  27  *
  28  * Names:
  29  * for any function base name 'foo' (uppercase form 'FOO'), we will have
  30  * the following:
  31  * - a macro for the identity with the name OSSL_FUNC_'FOO' or derivates
  32  *   thereof (to be specified further down)
  33  * - a function signature typedef with the name OSSL_'foo'_fn
  34  * - a function pointer extractor function with the name OSSL_'foo'
  35  */
  36
  37 /* Helper macro to create the function signature typedef and the extractor */
  38 #define OSSL_CORE_MAKE_FUNC(type,name,args)                             \
  39     typedef type (OSSL_##name##_fn)args;                                \
  40     static ossl_inline \
  41     OSSL_##name##_fn *OSSL_get_##name(const OSSL_DISPATCH *opf)         \
  42     {                                                                   \
  43         return (OSSL_##name##_fn *)opf->function;                       \
  44     }
  45
  46 /*
  47  * Core function identities, for the two OSSL_DISPATCH tables being passed
  48  * in the OSSL_provider_init call.
  49  *
  50  * 0 serves as a marker for the end of the OSSL_DISPATCH array, and must
  51  * therefore NEVER be used as a function identity.
  52  */
  53 /* Functions provided by the Core to the provider, reserved numbers 1-1023 */
  54 # define OSSL_FUNC_CORE_GET_PARAM_TYPES        1
  55 OSSL_CORE_MAKE_FUNC(const OSSL_ITEM *,
  56                     core_get_param_types,(const OSSL_PROVIDER *prov))
  57 # define OSSL_FUNC_CORE_GET_PARAMS             2
  58 OSSL_CORE_MAKE_FUNC(int,core_get_params,(const OSSL_PROVIDER *prov,
  59                                          const OSSL_PARAM params[]))
  60
  61 /* Functions provided by the provider to the Core, reserved numbers 1024-1535 */
  62 # define OSSL_FUNC_PROVIDER_TEARDOWN         1024
  63 OSSL_CORE_MAKE_FUNC(void,provider_teardown,(void))
  64 # define OSSL_FUNC_PROVIDER_GET_PARAM_TYPES  1025
  65 OSSL_CORE_MAKE_FUNC(const OSSL_ITEM *,
  66                     provider_get_param_types,(const OSSL_PROVIDER *prov))
  67 # define OSSL_FUNC_PROVIDER_GET_PARAMS       1026
  68 OSSL_CORE_MAKE_FUNC(int,provider_get_params,(const OSSL_PROVIDER *prov,
  69                                              const OSSL_PARAM params[]))
  70 # define OSSL_FUNC_PROVIDER_QUERY_OPERATION  1027
  71 OSSL_CORE_MAKE_FUNC(const OSSL_ALGORITHM *,provider_query_operation,
  72                     (const OSSL_PROVIDER *, int operation_id,
  73                      const int *no_store))
  74
  75 /* Digests */
  76
  77 # define OSSL_OP_DIGEST                     1
  78
  79 # define OSSL_FUNC_DIGEST_NEWCTX            1
  80 # define OSSL_FUNC_DIGEST_INIT              2
  81 # define OSSL_FUNC_DIGEST_UPDDATE           3
  82 # define OSSL_FUNC_DIGEST_FINAL             4
  83 # define OSSL_FUNC_DIGEST_DIGEST            5
  84 # define OSSL_FUNC_DIGEST_FREECTX           6
  85 # define OSSL_FUNC_DIGEST_DUPCTX            7
  86 # define OSSL_FUNC_DIGEST_SIZE              8
  87 # define OSSL_FUNC_DIGEST_BLOCK_SIZE        9
  88
  89 OSSL_CORE_MAKE_FUNC(void *, OP_digest_newctx, (void))
  90 OSSL_CORE_MAKE_FUNC(int, OP_digest_init, (void *vctx))
  91 OSSL_CORE_MAKE_FUNC(int, OP_digest_update,
  92                     (void *, const unsigned char *in, size_t inl))
  93 OSSL_CORE_MAKE_FUNC(int, OP_digest_final,
  94                     (void *, unsigned char *out, size_t *outl))
  95 OSSL_CORE_MAKE_FUNC(int, OP_digest_digest,
  96                     (const unsigned char *in, size_t inl, unsigned char *out,
  97                      size_t *out_l))
  98 OSSL_CORE_MAKE_FUNC(void, OP_digest_cleanctx, (void *vctx))
  99 OSSL_CORE_MAKE_FUNC(void, OP_digest_freectx, (void *vctx))
 100 OSSL_CORE_MAKE_FUNC(void *, OP_digest_dupctx, (void *vctx))
 101 OSSL_CORE_MAKE_FUNC(size_t, OP_digest_size, (void))
 102 OSSL_CORE_MAKE_FUNC(size_t, OP_digest_block_size, (void))
 103
 104 # ifdef __cplusplus
 105 }
 106 # endif
 107
 108 #endif