1/*
2 * Copyright (c) 2012,2014 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 <stdio.h>
26
27#include "utilities/SecCFRelease.h"
28#include "utilities/der_plist.h"
29#include "utilities/der_plist_internal.h"
30
31#include <corecrypto/ccder.h>
32#include <CoreFoundation/CoreFoundation.h>
33
34
35const uint8_t* der_decode_array(CFAllocatorRef allocator, CFOptionFlags mutability,
36                                CFArrayRef* array, CFErrorRef *error,
37                                const uint8_t* der, const uint8_t *der_end)
38{
39    if (NULL == der)
40        return NULL;
41
42    CFMutableArrayRef result = CFArrayCreateMutable(allocator, 0, &kCFTypeArrayCallBacks);
43
44    const uint8_t *elements_end;
45    const uint8_t *current_element = ccder_decode_sequence_tl(&elements_end, der, der_end);
46
47    while (current_element != NULL && current_element < elements_end) {
48        CFPropertyListRef element = NULL;
49        current_element = der_decode_plist(allocator, mutability, &element, error, current_element, elements_end);
50        if (current_element) {
51            CFArrayAppendValue(result, element);
52            CFReleaseNull(element);
53        }
54    }
55
56    if (current_element) {
57        *array = result;
58        result = NULL;
59    }
60
61    CFReleaseNull(result);
62    return current_element;
63}
64
65
66size_t der_sizeof_array(CFArrayRef data, CFErrorRef *error)
67{
68    size_t body_size = 0;
69    for(CFIndex position = CFArrayGetCount(data) - 1;
70        position >= 0;
71        --position)
72    {
73        body_size += der_sizeof_plist(CFArrayGetValueAtIndex(data, position), error);
74    }
75    return ccder_sizeof(CCDER_CONSTRUCTED_SEQUENCE, body_size);
76}
77
78
79uint8_t* der_encode_array(CFArrayRef array, CFErrorRef *error,
80                          const uint8_t *der, uint8_t *der_end)
81{
82    uint8_t* original_der_end = der_end;
83    for(CFIndex position = CFArrayGetCount(array) - 1;
84        position >= 0;
85        --position)
86    {
87        der_end = der_encode_plist(CFArrayGetValueAtIndex(array, position), error, der, der_end);
88    }
89
90    return ccder_encode_constructed_tl(CCDER_CONSTRUCTED_SEQUENCE, original_der_end, der, der_end);
91}
92