1 /*	$NetBSD: asn1-template.h,v 1.1.1.1 2011/04/13 18:14:39 elric Exp $	*/
2 
3 /*
4  * Copyright (c) 1997 - 2006 Kungliga Tekniska H�gskolan
5  * (Royal Institute of Technology, Stockholm, Sweden).
6  * All rights reserved.
7  *
8  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  *
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  *
17  * 2. Redistributions in binary form must reproduce the above copyright
18  *    notice, this list of conditions and the following disclaimer in the
19  *    documentation and/or other materials provided with the distribution.
20  *
21  * 3. Neither the name of the Institute nor the names of its contributors
22  *    may be used to endorse or promote products derived from this software
23  *    without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  */
37 
38 /* asn1 templates */
39 
40 #ifndef __TEMPLATE_H__
41 #define __TEMPLATE_H__
42 
43 /* tag:
44  *  0..20 tag
45  * 21     type
46  * 22..23 class
47  * 24..27 flags
48  * 28..31 op
49  */
50 
51 /* parse:
52  *  0..11 type
53  * 12..23 unused
54  * 24..27 flags
55  * 28..31 op
56  */
57 
58 #define A1_OP_MASK		(0xf0000000)
59 #define A1_OP_TYPE		(0x10000000)
60 #define A1_OP_TYPE_EXTERN	(0x20000000)
61 #define A1_OP_TAG		(0x30000000)
62 #define A1_OP_PARSE		(0x40000000)
63 #define A1_OP_SEQOF		(0x50000000)
64 #define A1_OP_SETOF		(0x60000000)
65 #define A1_OP_BMEMBER		(0x70000000)
66 #define A1_OP_CHOICE		(0x80000000)
67 
68 #define A1_FLAG_MASK		(0x0f000000)
69 #define A1_FLAG_OPTIONAL	(0x01000000)
70 #define A1_FLAG_IMPLICIT	(0x02000000)
71 
72 #define A1_TAG_T(CLASS,TYPE,TAG)	((A1_OP_TAG) | (((CLASS) << 22) | ((TYPE) << 21) | (TAG)))
73 #define A1_TAG_CLASS(x)		(((x) >> 22) & 0x3)
74 #define A1_TAG_TYPE(x)		(((x) >> 21) & 0x1)
75 #define A1_TAG_TAG(x)		((x) & 0x1fffff)
76 
77 #define A1_TAG_LEN(t)		((uintptr_t)(t)->ptr)
78 #define A1_HEADER_LEN(t)	((uintptr_t)(t)->ptr)
79 
80 #define A1_PARSE_T(type)	((A1_OP_PARSE) | (type))
81 #define A1_PARSE_TYPE_MASK	0xfff
82 #define A1_PARSE_TYPE(x)	(A1_PARSE_TYPE_MASK & (x))
83 
84 #define A1_PF_INDEFINTE		0x1
85 #define A1_PF_ALLOW_BER		0x2
86 
87 #define A1_HF_PRESERVE		0x1
88 #define A1_HF_ELLIPSIS		0x2
89 
90 #define A1_HBF_RFC1510		0x1
91 
92 
93 struct asn1_template {
94     uint32_t tt;
95     size_t offset;
96     const void *ptr;
97 };
98 
99 typedef int (*asn1_type_decode)(const unsigned char *, size_t, void *, size_t *);
100 typedef int (*asn1_type_encode)(unsigned char *, size_t, const void *, size_t *);
101 typedef size_t (*asn1_type_length)(const void *);
102 typedef void (*asn1_type_release)(void *);
103 typedef int (*asn1_type_copy)(const void *, void *);
104 
105 struct asn1_type_func {
106     asn1_type_encode encode;
107     asn1_type_decode decode;
108     asn1_type_length length;
109     asn1_type_copy copy;
110     asn1_type_release release;
111     size_t size;
112 };
113 
114 struct template_of {
115     unsigned int len;
116     void *val;
117 };
118 
119 enum template_types {
120     A1T_IMEMBER = 0,
121     A1T_HEIM_INTEGER,
122     A1T_INTEGER,
123     A1T_UNSIGNED,
124     A1T_GENERAL_STRING,
125     A1T_OCTET_STRING,
126     A1T_OCTET_STRING_BER,
127     A1T_IA5_STRING,
128     A1T_BMP_STRING,
129     A1T_UNIVERSAL_STRING,
130     A1T_PRINTABLE_STRING,
131     A1T_VISIBLE_STRING,
132     A1T_UTF8_STRING,
133     A1T_GENERALIZED_TIME,
134     A1T_UTC_TIME,
135     A1T_HEIM_BIT_STRING,
136     A1T_BOOLEAN,
137     A1T_OID,
138     A1T_TELETEX_STRING,
139     A1T_NULL
140 };
141 
142 
143 #endif
144