crypto/evp/evp_cnf.c

   1 /*
   2  * Copyright 2012-2017 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 <stdio.h>
  11 #include <openssl/crypto.h>
  12 #include "internal/cryptlib.h"
  13 #include <openssl/conf.h>
  14 #include <openssl/x509.h>
  15 #include <openssl/x509v3.h>
  16 #include <openssl/trace.h>
  17
  18 /* Algorithm configuration module. */
  19
  20 /* TODO(3.0): the config module functions should be passed a library context */
  21 static int alg_module_init(CONF_IMODULE *md, const CONF *cnf)
  22 {
  23     int i;
  24     const char *oid_section;
  25     STACK_OF(CONF_VALUE) *sktmp;
  26     CONF_VALUE *oval;
  27
  28     OSSL_TRACE2(CONF, "Loading EVP module: name %s, value %s\n",
  29                 CONF_imodule_get_name(md), CONF_imodule_get_value(md));
  30
  31     oid_section = CONF_imodule_get_value(md);
  32     if ((sktmp = NCONF_get_section(cnf, oid_section)) == NULL) {
  33         EVPerr(EVP_F_ALG_MODULE_INIT, EVP_R_ERROR_LOADING_SECTION);
  34         return 0;
  35     }
  36     for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
  37         oval = sk_CONF_VALUE_value(sktmp, i);
  38         if (strcmp(oval->name, "fips_mode") == 0) {
  39             int m;
  40
  41             if (!X509V3_get_value_bool(oval, &m)) {
  42                 EVPerr(EVP_F_ALG_MODULE_INIT, EVP_R_INVALID_FIPS_MODE);
  43                 return 0;
  44             }
  45             /*
  46              * fips_mode is deprecated and should not be used in new
  47              * configurations.  Old configurations are likely to ONLY
  48              * have this, so we assume that no default properties have
  49              * been set before this.
  50              */
  51             if (m > 0)
  52                 EVP_set_default_properties(NULL, "fips=yes");
  53         } else if (strcmp(oval->name, "default_properties") == 0) {
  54             EVP_set_default_properties(NULL, oval->value);
  55         } else {
  56             EVPerr(EVP_F_ALG_MODULE_INIT, EVP_R_UNKNOWN_OPTION);
  57             ERR_add_error_data(4, "name=", oval->name,
  58                                ", value=", oval->value);
  59             return 0;
  60         }
  61
  62     }
  63     return 1;
  64 }
  65
  66 void EVP_add_alg_module(void)
  67 {
  68     OSSL_TRACE(CONF, "Adding config module 'alg_section'\n");
  69     CONF_module_add("alg_section", alg_module_init, 0);
  70 }