306 lines
8.3 KiB
C
306 lines
8.3 KiB
C
/*
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* Copyright (c) 1997 - 2006 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Portions Copyright (c) 2009 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* asn1 templates */
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#ifndef __TEMPLATE_H__
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#define __TEMPLATE_H__
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/*
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* TBD:
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*
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* - For OER also encode number of optional/default/extension elements into
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* header entry's ptr field, not just the number of entries that follow it.
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*
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* - For JER we'll need to encode encoding options (encode as array, encode as
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* object, etc.)
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*
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* - For open types we'll need to be able to indicate what encoding rules the
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* type uses.
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*
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* - We have too many bits for tags (20) and probably not enough for ops (4
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* bits, and we've used all but one).
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*/
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/* header:
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* HF flags if not a BIT STRING type
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* HBF flags if a BIT STRING type
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*
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* ptr is count of elements
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* offset is size of struct
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*/
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/* tag:
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* 0..20 tag
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* 21 type
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* 22..23 class
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* 24..27 flags
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* 28..31 op
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*
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* ptr points to template for tagged type
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* offset is offset of struct field
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*/
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/* parse:
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* 0..11 type
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* 12..23 unused
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* 24..27 flags
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* 28..31 op
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*
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* ptr is NULL
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* offset is ...
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*/
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/* defval: (next template entry is defaulted)
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*
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* DV flags (ptr is or points to defval)
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*
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* ptr is default value or pointer to default value
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* offset is all ones
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*/
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/* name: first one is the name of the SET/SEQUENCE/CHOICE type
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* subsequent ones are the name of the nth field
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*
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* 0..23 unused
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* 24..27 flags A1_NM_*
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* 28..31 op
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*
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* ptr is const char * pointer to the name as C string
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* offset is all zeros
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*/
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/* objset:
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* 0..9 open type ID entry index
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* 10..19 open type entry index
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* 20..23 unused
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* 24..27 flags A1_OS_*
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* 28..31 op
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*
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* ptr points to object set template
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* offset is the offset of the choice struct
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*/
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/* opentypeid: offset is zero
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* ptr points to value if it is not an integer
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* ptr is the value if it is an integer
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* 0..23 unused
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* 24..27 flags A1_OTI_*
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* 28..31 op
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*/
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/* opentype: offset is sizeof C type for this open type choice
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* ptr points to template for type choice
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* 0..23 unused
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* 24..27 flags
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* 28..31 op
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*/
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#define A1_OP_MASK (0xf0000000)
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#define A1_OP_TYPE (0x10000000) /* templated type */
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#define A1_OP_TYPE_EXTERN (0x20000000) /* templated type (imported) */
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#define A1_OP_TAG (0x30000000) /* a tag */
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#define A1_OP_PARSE (0x40000000) /* primitive type */
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#define A1_OP_SEQOF (0x50000000) /* sequence of */
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#define A1_OP_SETOF (0x60000000) /* set of */
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#define A1_OP_BMEMBER (0x70000000) /* BIT STRING member */
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#define A1_OP_CHOICE (0x80000000) /* CHOICE */
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#define A1_OP_DEFVAL (0x90000000) /* def. value */
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#define A1_OP_OPENTYPE_OBJSET (0xa0000000) /* object set for open type */
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#define A1_OP_OPENTYPE_ID (0xb0000000) /* open type id field */
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#define A1_OP_OPENTYPE (0xc0000000) /* open type field */
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#define A1_OP_NAME (0xd0000000) /* symbol */
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#define A1_OP_TYPE_DECORATE (0xe0000000) /* decoration w/ templated type */
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#define A1_OP_TYPE_DECORATE_EXTERN (0xf0000000) /* decoration w/ some C type */
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/* 0x00.. is still free */
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#define A1_FLAG_MASK (0x0f000000)
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#define A1_FLAG_OPTIONAL (0x01000000)
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#define A1_FLAG_IMPLICIT (0x02000000)
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#define A1_FLAG_DEFAULT (0x04000000)
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#define A1_TAG_T(CLASS,TYPE,TAG) ((A1_OP_TAG) | (((CLASS) << 22) | ((TYPE) << 21) | (TAG)))
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#define A1_TAG_CLASS(x) (((x) >> 22) & 0x3)
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#define A1_TAG_TYPE(x) (((x) >> 21) & 0x1)
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#define A1_TAG_TAG(x) ((x) & 0x1fffff)
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#define A1_TAG_LEN(t) ((uintptr_t)(t)->ptr)
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#define A1_HEADER_LEN(t) ((uintptr_t)(t)->ptr)
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#define A1_PARSE_T(type) ((A1_OP_PARSE) | (type))
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#define A1_PARSE_TYPE_MASK 0xfff
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#define A1_PARSE_TYPE(x) (A1_PARSE_TYPE_MASK & (x))
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#define A1_PF_INDEFINTE 0x1
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#define A1_PF_ALLOW_BER 0x2
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#define A1_HF_PRESERVE 0x1
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#define A1_HF_ELLIPSIS 0x2
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#define A1_HBF_RFC1510 0x1
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#define A1_DV_BOOLEAN 0x01
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#define A1_DV_INTEGER 0x02
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#define A1_DV_INTEGER32 0x04
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#define A1_DV_INTEGER64 0x08
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#define A1_DV_UTF8STRING 0x10
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#define A1_OS_IS_SORTED (0x01000000)
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#define A1_OS_OT_IS_ARRAY (0x02000000)
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#define A1_OTI_IS_INTEGER (0x04000000)
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struct asn1_template {
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uint32_t tt;
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uint32_t offset;
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const void *ptr;
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};
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typedef int (ASN1CALL *asn1_type_decode)(const unsigned char *, size_t, void *, size_t *);
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typedef int (ASN1CALL *asn1_type_encode)(unsigned char *, size_t, const void *, size_t *);
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typedef size_t (ASN1CALL *asn1_type_length)(const void *);
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typedef void (ASN1CALL *asn1_type_release)(void *);
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typedef int (ASN1CALL *asn1_type_copy)(const void *, void *);
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typedef char * (ASN1CALL *asn1_type_print)(const void *, int);
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struct asn1_type_func {
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asn1_type_encode encode;
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asn1_type_decode decode;
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asn1_type_length length;
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asn1_type_copy copy;
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asn1_type_release release;
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asn1_type_print print;
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size_t size;
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};
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struct template_of {
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unsigned int len;
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void *val;
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};
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enum template_types {
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A1T_IMEMBER = 0,
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A1T_HEIM_INTEGER,
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A1T_INTEGER,
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A1T_INTEGER64,
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A1T_UNSIGNED,
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A1T_UNSIGNED64,
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A1T_GENERAL_STRING,
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A1T_OCTET_STRING,
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A1T_OCTET_STRING_BER,
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A1T_IA5_STRING,
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A1T_BMP_STRING,
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A1T_UNIVERSAL_STRING,
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A1T_PRINTABLE_STRING,
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A1T_VISIBLE_STRING,
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A1T_UTF8_STRING,
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A1T_GENERALIZED_TIME,
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A1T_UTC_TIME,
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A1T_HEIM_BIT_STRING,
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A1T_BOOLEAN,
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A1T_OID,
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A1T_TELETEX_STRING,
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A1T_NUM_ENTRY
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};
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extern struct asn1_type_func asn1_template_prim[A1T_NUM_ENTRY];
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#define ABORT_ON_ERROR() abort()
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#define DPOC(data,offset) ((const void *)(((const unsigned char *)data) + offset))
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#define DPO(data,offset) ((void *)(((unsigned char *)data) + offset))
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/*
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* These functions are needed by the generated template stubs and are
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* really internal functions. Since they are part of der-private.h
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* that contains extra prototypes that really a private we included a
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* copy here.
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*/
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int
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_asn1_copy_top (
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const struct asn1_template * /*t*/,
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const void * /*from*/,
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void * /*to*/);
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void
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_asn1_free_top(const struct asn1_template *, void *);
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char *
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_asn1_print_top(const struct asn1_template *, int, const void *);
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int
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_asn1_decode_top (
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const struct asn1_template * /*t*/,
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unsigned /*flags*/,
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const unsigned char * /*p*/,
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size_t /*len*/,
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void * /*data*/,
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size_t * /*size*/);
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int
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_asn1_encode (
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const struct asn1_template * /*t*/,
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unsigned char * /*p*/,
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size_t /*len*/,
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const void * /*data*/,
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size_t * /*size*/);
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int
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_asn1_encode_fuzzer (
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const struct asn1_template * /*t*/,
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unsigned char * /*p*/,
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size_t /*len*/,
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const void * /*data*/,
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size_t * /*size*/);
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void
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_asn1_free (
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const struct asn1_template * /*t*/,
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void * /*data*/);
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size_t
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_asn1_length (
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const struct asn1_template * /*t*/,
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const void * /*data*/);
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size_t
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_asn1_length_fuzzer (
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const struct asn1_template * /*t*/,
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const void * /*data*/);
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#endif
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