/*
 * Definitions for Abstract Syntax Notation One, ASN.1
 * As defined in ISO/IS 8824 and ISO/IS 8825
 *
 *
 */
/***********************************************************
	Copyright 1988, 1989 by Carnegie Mellon University

                      All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of CMU not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
******************************************************************/

#ifndef ASN1_H
#define ASN1_H

/*
 * support for 64 bit linux platform.
 * instead of a rewrite, which is obviously neccessary,
 * we replace `long' by `int32'
 */
#if defined(__alpha)
typedef unsigned int u_int32;
typedef int int32;
#else
typedef unsigned long u_int32;
typedef long int32;
#endif

#undef _ANSI_ARGS_
#if (defined(__STDC__) && ! defined(NO_PROTOTYPE)) || defined(USE_PROTOTYPE)
# define _ANSI_ARGS_(x) x
#else
# define _ANSI_ARGS_(x) ()
#endif

#include <sys/types.h>

#ifndef EIGHTBIT_SUBIDS
typedef u_int32	oid;
#define MAX_SUBID   0xFFFFFFFF
#else
typedef u_char	oid;
#define MAX_SUBID   0xFF
#endif

#define MAX_OID_LEN	    128	/* max subid's in an oid */

#define ASN_EOC             (0x00)  /* end of contents */
#define ASN_BOOLEAN	    (0x01)  /* Boolean */
#define ASN_INTEGER	    (0x02)
#define ASN_BIT_STR	    (0x03)
#define ASN_OCTET_STR	    (0x04)
#define ASN_NULL	    (0x05)
#define ASN_OBJECT_ID	    (0x06)
#define ASN_OBJECT_DESC     (0x07)
#define ASN_EXT             (0x08)
#define ASN_SEQUENCE	    (0x10)
#define ASN_SET		    (0x11)
#define ASN_NUMSTR          (0x12)  /* Numerical string */
#define ASN_PRNSTR          (0x13)  /* Printable string */

#define ASN_UNIVERSAL	    (0x00)
#define ASN_APPLICATION     (0x40)
#define ASN_CONTEXT	    (0x80)
#define ASN_PRIVATE	    (0xC0)

#define ASN_PRIMITIVE	    (0x00)
#define ASN_CONSTRUCTOR	    (0x20)

#define ASN_LONG_LEN	    (0x80)
#define ASN_EXTENSION_ID    (0x1F)
#define ASN_BIT8	    (0x80)

#define IS_CONSTRUCTOR(byte)	((byte) & ASN_CONSTRUCTOR)
#define IS_EXTENSION_ID(byte)	(((byte) & ASN_EXTENSION_ID) == ASN_EXTENSION_ID)

/* 
 * internal 64 bit representation:
 */
struct counter64 {
    u_int32 high;
    u_int32 low;
};


extern u_char	*asn_parse_int _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char *type,
			int32 *intp,
			int intsize));

extern u_char	*asn_build_int _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char type,
			int32 *intp,
			int intsize));

extern u_char	*asn_parse_unsigned_int _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char *type,
			u_int32 *intp,
			int intsize));

extern u_char	*asn_build_unsigned_int _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char type,
			u_int32 *intp,
			int intsize));

extern u_char	*asn_parse_string _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char *type,
			u_char *string,
			int *len));

extern u_char	*asn_build_string _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char type,
			u_char *str,
			int len));

extern u_char	*asn_parse_header _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char *type));

extern u_char	*asn_build_header _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char type,
			int len));

extern u_char	*asn_build_sequence _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char type,
			int len));

extern u_char	*asn_parse_length _ANSI_ARGS_((u_char *data,
			u_int32 *eln));

extern u_char	*asn_build_length _ANSI_ARGS_((u_char *data,
			int *datalength,
			int len));

extern u_char	*asn_parse_objid _ANSI_ARGS_((
			u_char *data,
			int *datalength,
			u_char *type,
			oid *objid, 
			int *objidlength));

extern u_char	*asn_build_objid _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char type,
			oid *objid, 
			int objidlength));

extern u_char	*asn_parse_null _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char *type));

extern u_char	*asn_build_null _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char type));
extern u_char	*asn_parse_bitstring _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char *type,
			u_char *str,
			int *len));

extern u_char	*asn_build_bitstring _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char type,
			u_char *str,
			int len));

extern u_char	*asn_parse_unsigned_int64 _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char *type,
			struct counter64 *cp,
			int cp_size));

extern u_char	*asn_build_unsigned_int64 _ANSI_ARGS_((u_char *data,
			int *datalength,
			u_char type,
			struct counter64 *cp,
			int cp_size));

#endif