utilities/src/der_plist.c

   1 //
   2 //  der_plist.c
   3 //  utilities
   4 //
   5 //  Created by Mitch Adler on 7/2/12.
   6 //  Copyright (c) 2012 Apple Inc. All rights reserved.
   7 //
   8
   9 #include <stdio.h>
  10
  11 #include "utilities/SecCFRelease.h"
  12 #include "utilities/der_plist.h"
  13 #include "utilities/der_plist_internal.h"
  14
  15 #include <corecrypto/ccder.h>
  16 #include <CoreFoundation/CoreFoundation.h>
  17
  18 //
  19 // der..CFPropertyList
  20 //
  21 // We support:
  22 //
  23 //   CFBoolean
  24 //   CFData
  25 //   CFDate
  26 //   CFString
  27 //   CFNumber
  28 //   CFNull
  29 //
  30 //   CFArray
  31 //   CFDictionary
  32 //
  33 //
  34
  35 const uint8_t* der_decode_plist(CFAllocatorRef allocator, CFOptionFlags mutability,
  36                                 CFPropertyListRef* pl, CFErrorRef *error,
  37                                 const uint8_t* der, const uint8_t *der_end)
  38 {    if (NULL == der)
  39     return NULL;
  40
  41     ccder_tag tag;
  42     if (NULL == ccder_decode_tag(&tag, der, der_end))
  43         return NULL;
  44
  45     switch (tag) {
  46                 case CCDER_NULL:
  47                         return der_decode_null(allocator, mutability, (CFNullRef*)pl, error, der, der_end);
  48         case CCDER_BOOLEAN:
  49             return der_decode_boolean(allocator, mutability, (CFBooleanRef*)pl, error, der, der_end);
  50         case CCDER_OCTET_STRING:
  51             return der_decode_data(allocator, mutability, (CFDataRef*)pl, error, der, der_end);
  52         case CCDER_GENERALIZED_TIME:
  53             return der_decode_date(allocator, mutability, (CFDateRef*)pl, error, der, der_end);
  54         case CCDER_CONSTRUCTED_SEQUENCE:
  55             return der_decode_array(allocator, mutability, (CFArrayRef*)pl, error, der, der_end);
  56         case CCDER_UTF8_STRING:
  57             return der_decode_string(allocator, mutability, (CFStringRef*)pl, error, der, der_end);
  58         case CCDER_INTEGER:
  59             return der_decode_number(allocator, mutability, (CFNumberRef*)pl, error, der, der_end);
  60         case CCDER_CONSTRUCTED_SET:
  61             return der_decode_dictionary(allocator, mutability, (CFDictionaryRef*)pl, error, der, der_end);
  62         default:
  63             SecCFDERCreateError(kSecDERErrorUnsupportedDERType, CFSTR("Unsupported DER Type"), NULL, error);
  64             return NULL;
  65     }
  66 }
  67
  68
  69 size_t der_sizeof_plist(CFPropertyListRef pl, CFErrorRef *error)
  70 {
  71     if (!pl) {
  72         SecCFDERCreateError(kSecDERErrorUnsupportedCFObject, CFSTR("Null CFType"), NULL, error);
  73         return 0;
  74     }
  75
  76     CFTypeID  dataType = CFGetTypeID(pl);
  77
  78     if (CFArrayGetTypeID() == dataType)
  79         return der_sizeof_array((CFArrayRef) pl, error);
  80     else if (CFBooleanGetTypeID() == dataType)
  81         return der_sizeof_boolean((CFBooleanRef) pl, error);
  82     else if (CFDataGetTypeID() == dataType)
  83         return der_sizeof_data((CFDataRef) pl, error);
  84     else if (CFDateGetTypeID() == dataType)
  85         return der_sizeof_date((CFDateRef) pl, error);
  86     else if (CFDictionaryGetTypeID() == dataType)
  87         return der_sizeof_dictionary((CFDictionaryRef) pl, error);
  88     else if (CFStringGetTypeID() == dataType)
  89         return der_sizeof_string((CFStringRef) pl, error);
  90     else if (CFNumberGetTypeID() == dataType)
  91         return der_sizeof_number((CFNumberRef) pl, error);
  92         if (CFNullGetTypeID() == dataType)
  93                 return der_sizeof_null((CFNullRef) pl, error);
  94         else {
  95         SecCFDERCreateError(kSecDERErrorUnsupportedCFObject, CFSTR("Unsupported CFType"), NULL, error);
  96         return 0;
  97     }
  98 }
  99
 100
 101 uint8_t* der_encode_plist(CFPropertyListRef pl, CFErrorRef *error,
 102                           const uint8_t *der, uint8_t *der_end)
 103 {
 104     if (!pl) {
 105         SecCFDERCreateError(kSecDERErrorUnsupportedCFObject, CFSTR("Null CFType"), NULL, error);
 106         return NULL;
 107     }
 108
 109     CFTypeID  dataType = CFGetTypeID(pl);
 110
 111     if (CFArrayGetTypeID() == dataType)
 112         return der_encode_array((CFArrayRef) pl, error, der, der_end);
 113     else if (CFBooleanGetTypeID() == dataType)
 114         return der_encode_boolean((CFBooleanRef) pl, error, der, der_end);
 115     else if (CFDataGetTypeID() == dataType)
 116         return der_encode_data((CFDataRef) pl, error, der, der_end);
 117     else if (CFDateGetTypeID() == dataType)
 118         return der_encode_date((CFDateRef) pl, error, der, der_end);
 119     else if (CFDictionaryGetTypeID() == dataType)
 120         return der_encode_dictionary((CFDictionaryRef) pl, error, der, der_end);
 121     else if (CFStringGetTypeID() == dataType)
 122         return der_encode_string((CFStringRef) pl, error, der, der_end);
 123     else if (CFNumberGetTypeID() == dataType)
 124         return der_encode_number((CFNumberRef) pl, error, der, der_end);
 125         else if (CFNullGetTypeID() == dataType)
 126                 return der_encode_null((CFNullRef) pl, error, der, der_end);
 127     else {
 128         SecCFDERCreateError(kSecDERErrorUnsupportedCFObject, CFSTR("Unsupported CFType"), NULL, error);
 129         return NULL;
 130     }
 131 }