/* 

   Unix SMB/CIFS implementation.   

   simple ASN1 code

   Copyright (C) Andrew Tridgell 2001

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#ifndef _ASN_1_H

#define _ASN_1_H

struct nesting {

	off_t start;

	size_t taglen; /* for parsing */

	struct nesting *next;

};

struct asn1_data {

	uint8_t *data;

	size_t length;

	off_t ofs;

	struct nesting *nesting;

	bool has_error;

};

typedef struct asn1_data ASN1_DATA;

#define ASN1_APPLICATION(x) ((x)+0x60)

#define ASN1_APPLICATION_SIMPLE(x) ((x)+0x40)

#define ASN1_SEQUENCE(x) ((x)+0x30)

#define ASN1_CONTEXT(x) ((x)+0xa0)

#define ASN1_CONTEXT_SIMPLE(x) ((x)+0x80)

#define ASN1_GENERAL_STRING 0x1b

#define ASN1_OCTET_STRING 0x4

#define ASN1_OID 0x6

#define ASN1_BOOLEAN 0x1

#define ASN1_INTEGER 0x2

#define ASN1_BIT_STRING 0x3

#define ASN1_ENUMERATED 0xa

#define ASN1_SET 0x31

#define ASN1_MAX_OIDS 20

struct asn1_data *asn1_init(TALLOC_CTX *mem_ctx);

void asn1_free(struct asn1_data *data);

bool asn1_write(struct asn1_data *data, const void *p, int len);

bool asn1_write_uint8(struct asn1_data *data, uint8_t v);

bool asn1_push_tag(struct asn1_data *data, uint8_t tag);

bool asn1_pop_tag(struct asn1_data *data);

bool ber_write_OID_String(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, const char *OID);

bool asn1_write_OID(struct asn1_data *data, const char *OID);

bool asn1_write_OctetString(struct asn1_data *data, const void *p, size_t length);

#endif /* _ASN_1_H */