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Diffstat (limited to 'framework/src/suricata/src/util-decode-der.h')
| -rw-r--r-- | framework/src/suricata/src/util-decode-der.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/framework/src/suricata/src/util-decode-der.h b/framework/src/suricata/src/util-decode-der.h new file mode 100644 index 00000000..4c4b1aaf --- /dev/null +++ b/framework/src/suricata/src/util-decode-der.h @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2011-2012 ANSSI + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL + * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * \author Pierre Chifflier <pierre.chifflier@ssi.gouv.fr> + * + */ + +#ifndef __UTIL_DECODE_DER_H__ +#define __UTIL_DECODE_DER_H__ + +#define ASN1_CLASS_UNIVERSAL 0 +#define ASN1_CLASS_APPLICATION 1 +#define ASN1_CLASS_CONTEXTSPEC 2 +#define ASN1_CLASS_PRIVATE 3 + +#define ASN1_UNKNOWN 0 +#define ASN1_BOOLEAN 0x01 +#define ASN1_INTEGER 0x02 +#define ASN1_BITSTRING 0x03 +#define ASN1_OCTETSTRING 0x04 +#define ASN1_NULL 0x05 +#define ASN1_OID 0x06 +#define ASN1_UTF8STRING 0x0c +#define ASN1_SEQUENCE 0x10 +#define ASN1_SET 0x11 +#define ASN1_PRINTSTRING 0x13 +#define ASN1_T61STRING 0x14 +#define ASN1_IA5STRING 0x16 +#define ASN1_UTCTIME 0x17 + +typedef struct Asn1ElementType_ { + uint8_t cls:2; + uint8_t pc:1; + uint8_t tag:5; +} __attribute__((packed)) Asn1ElementType; + +/* Generic ASN.1 element + * Presence and meaning of fields depends on the header and type values. + */ +typedef struct Asn1Generic_ { + Asn1ElementType header; + uint8_t type; + uint32_t length; /* length of node, including header */ + + struct Asn1Generic_ *data; /* only if type is structured */ + + char *str; + uint32_t strlen; + uint64_t value; + struct Asn1Generic_ *next; /* only if type is sequence */ +} Asn1Generic; + +/* Generic error */ +#define ERR_DER_GENERIC 0x01 +/* Unknown ASN.1 element type */ +#define ERR_DER_UNKNOWN_ELEMENT 0x02 +/* One element requires to read more bytes than available */ +#define ERR_DER_ELEMENT_SIZE_TOO_BIG 0x03 +/* One element size is invalid (more than 4 bytes long) */ +#define ERR_DER_INVALID_SIZE 0x04 +/* Unsupported string type */ +#define ERR_DER_UNSUPPORTED_STRING 0x05 +/* Missing field or element */ +#define ERR_DER_MISSING_ELEMENT 0x06 + +Asn1Generic * DecodeDer(const unsigned char *buffer, uint32_t size, uint32_t *errcode); +void DerFree(Asn1Generic *a); + +#endif /* __UTIL_DECODE_DER_H__ */ |