providers/legacyprov.c

   1 /*
   2  * Copyright 2019-2020 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 "prov/implementations.h"
  17
  18 #define ALG(NAMES, FUNC) { NAMES, "provider=legacy", FUNC }
  19
  20 #ifdef STATIC_LEGACY
  21 OSSL_provider_init_fn ossl_legacy_provider_init;
  22 # define OSSL_provider_init ossl_legacy_provider_init
  23 #endif
  24
  25 /* Functions provided by the core */
  26 static OSSL_core_gettable_params_fn *c_gettable_params = NULL;
  27 static OSSL_core_get_params_fn *c_get_params = NULL;
  28
  29 /* Parameters we provide to the core */
  30 static const OSSL_ITEM legacy_param_types[] = {
  31     { OSSL_PARAM_UTF8_PTR, OSSL_PROV_PARAM_NAME },
  32     { OSSL_PARAM_UTF8_PTR, OSSL_PROV_PARAM_VERSION },
  33     { OSSL_PARAM_UTF8_PTR, OSSL_PROV_PARAM_BUILDINFO },
  34     { 0, NULL }
  35 };
  36
  37 static const OSSL_ITEM *legacy_gettable_params(const OSSL_PROVIDER *prov)
  38 {
  39     return legacy_param_types;
  40 }
  41
  42 static int legacy_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
  43 {
  44     OSSL_PARAM *p;
  45
  46     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME);
  47     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Legacy Provider"))
  48         return 0;
  49     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION);
  50     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR))
  51         return 0;
  52     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO);
  53     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR))
  54         return 0;
  55
  56     return 1;
  57 }
  58
  59 static const OSSL_ALGORITHM legacy_digests[] = {
  60 #ifndef OPENSSL_NO_MD2
  61     ALG("MD2", md2_functions),
  62 #endif
  63 #ifndef OPENSSL_NO_MD4
  64     ALG("MD4", md4_functions),
  65 #endif
  66 #ifndef OPENSSL_NO_MDC2
  67     ALG("MDC2", mdc2_functions),
  68 #endif /* OPENSSL_NO_MDC2 */
  69 #ifndef OPENSSL_NO_WHIRLPOOL
  70     ALG("WHIRLPOOL", wp_functions),
  71 #endif /* OPENSSL_NO_WHIRLPOOL */
  72 #ifndef OPENSSL_NO_RMD160
  73     ALG("RIPEMD-160:RIPEMD160:RIPEMD:RMD160", ripemd160_functions),
  74 #endif /* OPENSSL_NO_RMD160 */
  75     { NULL, NULL, NULL }
  76 };
  77
  78 static const OSSL_ALGORITHM legacy_ciphers[] = {
  79 #ifndef OPENSSL_NO_CAST
  80     ALG("CAST5-ECB", cast5128ecb_functions),
  81     ALG("CAST5-CBC:CAST-CBC:CAST", cast5128cbc_functions),
  82     ALG("CAST5-OFB", cast5128ofb64_functions),
  83     ALG("CAST5-CFB", cast5128cfb64_functions),
  84 #endif /* OPENSSL_NO_CAST */
  85 #ifndef OPENSSL_NO_BF
  86     ALG("BF-ECB", blowfish128ecb_functions),
  87     ALG("BF-CBC:BF:BLOWFISH", blowfish128cbc_functions),
  88     ALG("BF-OFB", blowfish64ofb64_functions),
  89     ALG("BF-CFB", blowfish64cfb64_functions),
  90 #endif /* OPENSSL_NO_BF */
  91 #ifndef OPENSSL_NO_IDEA
  92     ALG("IDEA-ECB", idea128ecb_functions),
  93     ALG("IDEA-CBC:IDEA", idea128cbc_functions),
  94     ALG("IDEA-OFB:IDEA-OFB64", idea128ofb64_functions),
  95     ALG("IDEA-CFB:IDEA-CFB64", idea128cfb64_functions),
  96 #endif /* OPENSSL_NO_IDEA */
  97 #ifndef OPENSSL_NO_SEED
  98     ALG("SEED-ECB", seed128ecb_functions),
  99     ALG("SEED-CBC:SEED", seed128cbc_functions),
 100     ALG("SEED-OFB:SEED-OFB128", seed128ofb128_functions),
 101     ALG("SEED-CFB:SEED-CFB128", seed128cfb128_functions),
 102 #endif /* OPENSSL_NO_SEED */
 103 #ifndef OPENSSL_NO_RC2
 104     ALG("RC2-ECB", rc2128ecb_functions),
 105     ALG("RC2-CBC", rc2128cbc_functions),
 106     ALG("RC2-40-CBC", rc240cbc_functions),
 107     ALG("RC2-64-CBC", rc264cbc_functions),
 108     ALG("RC2-CFB", rc2128cfb128_functions),
 109     ALG("RC2-OFB", rc2128ofb128_functions),
 110 #endif /* OPENSSL_NO_RC2 */
 111 #ifndef OPENSSL_NO_RC4
 112     ALG("RC4", rc4128_functions),
 113     ALG("RC4-40", rc440_functions),
 114 # ifndef OPENSSL_NO_MD5
 115     ALG("RC4-HMAC-MD5", rc4_hmac_md5_functions),
 116 # endif /* OPENSSL_NO_MD5 */
 117 #endif /* OPENSSL_NO_RC4 */
 118 #ifndef OPENSSL_NO_RC5
 119     ALG("RC5-ECB", rc5128ecb_functions),
 120     ALG("RC5-CBC", rc5128cbc_functions),
 121     ALG("RC5-OFB", rc5128ofb64_functions),
 122     ALG("RC5-CFB", rc5128cfb64_functions),
 123 #endif /* OPENSSL_NO_RC5 */
 124 #ifndef OPENSSL_NO_DES
 125     ALG("DESX-CBC:DESX", tdes_desx_cbc_functions),
 126     ALG("DES-ECB", des_ecb_functions),
 127     ALG("DES-CBC:DES", des_cbc_functions),
 128     ALG("DES-OFB", des_ofb64_functions),
 129     ALG("DES-CFB", des_cfb64_functions),
 130     ALG("DES-CFB1", des_cfb1_functions),
 131     ALG("DES-CFB8", des_cfb8_functions),
 132 #endif /* OPENSSL_NO_DES */
 133     { NULL, NULL, NULL }
 134 };
 135
 136 static const OSSL_ALGORITHM *legacy_query(OSSL_PROVIDER *prov,
 137                                           int operation_id,
 138                                           int *no_cache)
 139 {
 140     *no_cache = 0;
 141     switch (operation_id) {
 142     case OSSL_OP_DIGEST:
 143         return legacy_digests;
 144     case OSSL_OP_CIPHER:
 145         return legacy_ciphers;
 146     }
 147     return NULL;
 148 }
 149
 150 /* Functions we provide to the core */
 151 static const OSSL_DISPATCH legacy_dispatch_table[] = {
 152     { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))legacy_gettable_params },
 153     { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))legacy_get_params },
 154     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))legacy_query },
 155     { 0, NULL }
 156 };
 157
 158 int OSSL_provider_init(const OSSL_PROVIDER *provider,
 159                        const OSSL_DISPATCH *in,
 160                        const OSSL_DISPATCH **out,
 161                        void **provctx)
 162 {
 163     OSSL_core_get_library_context_fn *c_get_libctx = NULL;
 164
 165     for (; in->function_id != 0; in++) {
 166         switch (in->function_id) {
 167         case OSSL_FUNC_CORE_GETTABLE_PARAMS:
 168             c_gettable_params = OSSL_get_core_gettable_params(in);
 169             break;
 170         case OSSL_FUNC_CORE_GET_PARAMS:
 171             c_get_params = OSSL_get_core_get_params(in);
 172             break;
 173         case OSSL_FUNC_CORE_GET_LIBRARY_CONTEXT:
 174             c_get_libctx = OSSL_get_core_get_library_context(in);
 175             break;
 176         /* Just ignore anything we don't understand */
 177         default:
 178             break;
 179         }
 180     }
 181
 182     if (c_get_libctx == NULL)
 183         return 0;
 184
 185     *out = legacy_dispatch_table;
 186
 187     /*
 188      * We want to make sure that all calls from this provider that requires
 189      * a library context use the same context as the one used to call our
 190      * functions.  We do that by passing it along as the provider context.
 191      */
 192     *provctx = c_get_libctx(provider);
 193     return 1;
 194 }