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