providers/default/defltprov.c

   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 #include <string.h>
  11 #include <stdio.h>
  12 #include <openssl/core.h>
  13 #include <openssl/core_numbers.h>
  14 #include <openssl/core_names.h>
  15 #include <openssl/params.h>
  16
  17 /* Functions provided by the core */
  18 static OSSL_core_get_param_types_fn *c_get_param_types = NULL;
  19 static OSSL_core_get_params_fn *c_get_params = NULL;
  20
  21 /* Parameters we provide to the core */
  22 static const OSSL_ITEM deflt_param_types[] = {
  23     { OSSL_PARAM_UTF8_PTR, OSSL_PROV_PARAM_NAME },
  24     { OSSL_PARAM_UTF8_PTR, OSSL_PROV_PARAM_VERSION },
  25     { OSSL_PARAM_UTF8_PTR, OSSL_PROV_PARAM_BUILDINFO },
  26     { 0, NULL }
  27 };
  28
  29 static const OSSL_ITEM *deflt_get_param_types(const OSSL_PROVIDER *prov)
  30 {
  31     return deflt_param_types;
  32 }
  33
  34 static int deflt_get_params(const OSSL_PROVIDER *prov,
  35                             const OSSL_PARAM params[])
  36 {
  37     const OSSL_PARAM *p;
  38
  39     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME);
  40     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Default Provider"))
  41         return 0;
  42     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION);
  43     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR))
  44         return 0;
  45     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO);
  46     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR))
  47         return 0;
  48
  49     return 1;
  50 }
  51
  52 extern const OSSL_DISPATCH sha256_functions[];
  53
  54 static const OSSL_ALGORITHM deflt_digests[] = {
  55     { "SHA256", "default=yes", sha256_functions },
  56     { NULL, NULL, NULL }
  57 };
  58
  59 extern const OSSL_DISPATCH aes256ecb_functions[];
  60
  61 static const OSSL_ALGORITHM deflt_ciphers[] = {
  62     { "AES-256-ECB", "default=yes", aes256ecb_functions },
  63     { NULL, NULL, NULL }
  64 };
  65
  66 static const OSSL_ALGORITHM *deflt_query(OSSL_PROVIDER *prov,
  67                                          int operation_id,
  68                                          int *no_cache)
  69 {
  70     *no_cache = 0;
  71     switch (operation_id) {
  72     case OSSL_OP_DIGEST:
  73         return deflt_digests;
  74     case OSSL_OP_CIPHER:
  75         return deflt_ciphers;
  76     }
  77     return NULL;
  78 }
  79
  80 /* Functions we provide to the core */
  81 static const OSSL_DISPATCH deflt_dispatch_table[] = {
  82     { OSSL_FUNC_PROVIDER_GET_PARAM_TYPES, (void (*)(void))deflt_get_param_types },
  83     { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))deflt_get_params },
  84     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))deflt_query },
  85     { 0, NULL }
  86 };
  87
  88 OSSL_provider_init_fn ossl_default_provider_init;
  89
  90 int ossl_default_provider_init(const OSSL_PROVIDER *provider,
  91                                const OSSL_DISPATCH *in,
  92                                const OSSL_DISPATCH **out)
  93 {
  94     for (; in->function_id != 0; in++) {
  95         switch (in->function_id) {
  96         case OSSL_FUNC_CORE_GET_PARAM_TYPES:
  97             c_get_param_types = OSSL_get_core_get_param_types(in);
  98             break;
  99         case OSSL_FUNC_CORE_GET_PARAMS:
 100             c_get_params = OSSL_get_core_get_params(in);
 101             break;
 102         default:
 103             /* Just ignore anything we don't understand */
 104             break;
 105         }
 106     }
 107
 108     *out = deflt_dispatch_table;
 109     return 1;
 110 }