OSX/utilities/SecCoreCrypto.c

   1 /*
   2  * Copyright (c) 2015 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 #include "SecCoreCrypto.h"
  26 #include <corecrypto/ccder.h>
  27
  28
  29 #ifndef CCDER_BOOL_SUPPORT
  30
  31 //
  32 // bool encoding/decoding
  33 //
  34
  35
  36 const uint8_t* ccder_decode_bool(bool* boolean, const uint8_t* der, const uint8_t *der_end)
  37 {
  38     if (NULL == der)
  39         return NULL;
  40
  41     size_t payload_size = 0;
  42     const uint8_t *payload = ccder_decode_tl(CCDER_BOOLEAN, &payload_size, der, der_end);
  43
  44     if (NULL == payload || (der_end - payload) < 1 || payload_size != 1) {
  45         return NULL;
  46     }
  47
  48     if (boolean)
  49         *boolean = (*payload != 0);
  50
  51     return payload + payload_size;
  52 }
  53
  54
  55 size_t ccder_sizeof_bool(bool value __unused, CFErrorRef *error)
  56 {
  57     return ccder_sizeof(CCDER_BOOLEAN, 1);
  58 }
  59
  60
  61 uint8_t* ccder_encode_bool(bool value, const uint8_t *der, uint8_t *der_end)
  62 {
  63     uint8_t value_byte = value;
  64
  65     return ccder_encode_tl(CCDER_BOOLEAN, 1, der,
  66                            ccder_encode_body(1, &value_byte, der, der_end));
  67 }
  68 #endif