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