annotate nss/lib/util/secdert.h @ 4:b513267f632f tip

Build DBM module
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:58:03 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* This Source Code Form is subject to the terms of the Mozilla Public
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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4
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5 #ifndef _SECDERT_H_
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6 #define _SECDERT_H_
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7 /*
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8 * secdert.h - public data structures for the DER encoding and
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9 * decoding utilities library
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10 */
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11
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12 #include "utilrename.h"
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13 #include "seccomon.h"
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14
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15 typedef struct DERTemplateStr DERTemplate;
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16
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17 /*
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18 ** An array of these structures defines an encoding for an object using DER.
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19 ** The array usually starts with a dummy entry whose kind is DER_SEQUENCE;
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20 ** such an array is terminated with an entry where kind == 0. (An array
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21 ** which consists of a single component does not require a second dummy
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22 ** entry -- the array is only searched as long as previous component(s)
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23 ** instruct it.)
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24 */
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25 struct DERTemplateStr {
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26 /*
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27 ** Kind of item being decoded/encoded, including tags and modifiers.
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28 */
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29 unsigned long kind;
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30
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31 /*
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32 ** Offset from base of structure to field that holds the value
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33 ** being decoded/encoded.
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34 */
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35 unsigned int offset;
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36
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37 /*
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38 ** When kind suggests it (DER_POINTER, DER_INDEFINITE, DER_INLINE),
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39 ** this points to a sub-template for nested encoding/decoding.
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40 */
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41 DERTemplate *sub;
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42
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43 /*
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44 ** Argument value, dependent on "kind" and/or template placement
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45 ** within an array of templates:
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46 ** - In the first element of a template array, the value is the
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47 ** size of the structure to allocate when this template is being
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48 ** referenced by another template via DER_POINTER or DER_INDEFINITE.
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49 ** - In a component of a DER_SET or DER_SEQUENCE which is *not* a
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50 ** DER_UNIVERSAL type (that is, it has a class tag for either
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51 ** DER_APPLICATION, DER_CONTEXT_SPECIFIC, or DER_PRIVATE), the
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52 ** value is the underlying type of item being decoded/encoded.
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53 */
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54 unsigned long arg;
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55 };
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56
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57 /************************************************************************/
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58
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59 /* default chunksize for arenas used for DER stuff */
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60 #define DER_DEFAULT_CHUNKSIZE (2048)
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61
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62 /*
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63 ** BER/DER values for ASN.1 identifier octets.
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64 */
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65 #define DER_TAG_MASK 0xff
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66
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67 /*
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68 * BER/DER universal type tag numbers.
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69 * The values are defined by the X.208 standard; do not change them!
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70 * NOTE: if you add anything to this list, you must add code to derdec.c
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71 * to accept the tag, and probably also to derenc.c to encode it.
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72 */
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73 #define DER_TAGNUM_MASK 0x1f
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74 #define DER_BOOLEAN 0x01
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75 #define DER_INTEGER 0x02
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76 #define DER_BIT_STRING 0x03
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77 #define DER_OCTET_STRING 0x04
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78 #define DER_NULL 0x05
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79 #define DER_OBJECT_ID 0x06
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80 #define DER_SEQUENCE 0x10
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81 #define DER_SET 0x11
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82 #define DER_PRINTABLE_STRING 0x13
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83 #define DER_T61_STRING 0x14
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84 #define DER_IA5_STRING 0x16
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85 #define DER_UTC_TIME 0x17
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86 #define DER_VISIBLE_STRING 0x1a
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87 #define DER_HIGH_TAG_NUMBER 0x1f
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88
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89 /*
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90 ** Modifiers to type tags. These are also specified by a/the
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91 ** standard, and must not be changed.
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92 */
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93
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94 #define DER_METHOD_MASK 0x20
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95 #define DER_PRIMITIVE 0x00
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96 #define DER_CONSTRUCTED 0x20
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97
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98 #define DER_CLASS_MASK 0xc0
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99 #define DER_UNIVERSAL 0x00
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100 #define DER_APPLICATION 0x40
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101 #define DER_CONTEXT_SPECIFIC 0x80
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102 #define DER_PRIVATE 0xc0
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103
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104 /*
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105 ** Our additions, used for templates.
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106 ** These are not defined by any standard; the values are used internally only.
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107 ** Just be careful to keep them out of the low 8 bits.
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108 */
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109 #define DER_OPTIONAL 0x00100
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110 #define DER_EXPLICIT 0x00200
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111 #define DER_ANY 0x00400
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112 #define DER_INLINE 0x00800
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113 #define DER_POINTER 0x01000
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114 #define DER_INDEFINITE 0x02000
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115 #define DER_DERPTR 0x04000
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116 #define DER_SKIP 0x08000
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117 #define DER_FORCE 0x10000
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118 #define DER_OUTER 0x40000 /* for DER_DERPTR */
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119
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120 /*
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121 ** Macro to convert der decoded bit string into a decoded octet
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122 ** string. All it needs to do is fiddle with the length code.
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123 */
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124 #define DER_ConvertBitString(item) \
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125 { \
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126 (item)->len = ((item)->len + 7) >> 3; \
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127 }
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128
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129 #endif /* _SECDERT_H_ */
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