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108 lines
3.7 KiB
C
108 lines
3.7 KiB
C
/*
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* Copyright (C) 2011-2012 ANSSI
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* 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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* 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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* 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* \author Pierre Chifflier <pierre.chifflier@ssi.gouv.fr>
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*
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*/
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#ifndef __UTIL_DECODE_DER_H__
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#define __UTIL_DECODE_DER_H__
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#define ASN1_CLASS_UNIVERSAL 0
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#define ASN1_CLASS_APPLICATION 1
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#define ASN1_CLASS_CONTEXTSPEC 2
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#define ASN1_CLASS_PRIVATE 3
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#define ASN1_UNKNOWN 0
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#define ASN1_BOOLEAN 0x01
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#define ASN1_INTEGER 0x02
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#define ASN1_BITSTRING 0x03
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#define ASN1_OCTETSTRING 0x04
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#define ASN1_NULL 0x05
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#define ASN1_OID 0x06
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#define ASN1_UTF8STRING 0x0c
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#define ASN1_SEQUENCE 0x10
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#define ASN1_SET 0x11
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#define ASN1_PRINTSTRING 0x13
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#define ASN1_T61STRING 0x14
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#define ASN1_IA5STRING 0x16
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#define ASN1_UTCTIME 0x17
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#define ASN1_GENERALIZEDTIME 0x18
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typedef struct Asn1ElementType_ {
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uint8_t cls:2;
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uint8_t pc:1;
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uint8_t tag:5;
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} __attribute__((packed)) Asn1ElementType;
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/* Generic ASN.1 element
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* Presence and meaning of fields depends on the header and type values.
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*/
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typedef struct Asn1Generic_ {
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Asn1ElementType header;
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uint8_t type;
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uint32_t length; /* length of node, including header */
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struct Asn1Generic_ *data; /* only if type is structured */
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char *str;
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uint32_t strlen;
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uint64_t value;
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struct Asn1Generic_ *next; /* only if type is sequence */
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} Asn1Generic;
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/* Generic error (failed allocation, etc.) */
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#define ERR_DER_GENERIC 0x01
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/* Unknown ASN.1 element type */
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#define ERR_DER_UNKNOWN_ELEMENT 0x02
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/* One element requires to read more bytes than available */
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#define ERR_DER_ELEMENT_SIZE_TOO_BIG 0x03
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/* One element size is invalid (e.g more than 4 bytes long) */
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#define ERR_DER_INVALID_SIZE 0x04
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/* Unsupported string type */
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#define ERR_DER_UNSUPPORTED_STRING 0x05
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/* Missing field or element */
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#define ERR_DER_MISSING_ELEMENT 0x06
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/* Generic error */
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#define ERR_DER_RECURSION_LIMIT 0x07
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/* Unexpected or unknown tag */
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#define ERR_DER_INVALID_TAG 0x08
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/* Invalid element: empty object, etc. */
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#define ERR_DER_INVALID_OBJECT 0x09
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Asn1Generic * DecodeDer(const unsigned char *buffer, uint32_t size, uint32_t *errcode) __attribute__((nonnull));
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void DerFree(Asn1Generic *a);
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#ifdef AFLFUZZ_DER
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int DerParseDataFromFile(char *filename);
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#endif
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#endif /* __UTIL_DECODE_DER_H__ */
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