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/* crypto/asn1/asn1.h */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * 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 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 OR CONTRIBUTORS 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.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#ifndef HEADER_ASN1_H
#define HEADER_ASN1_H

#include <time.h>
#ifndef NO_BIO
#include <openssl/bio.h>
#endif
#include <openssl/bn.h>
#include <openssl/stack.h>
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#include <openssl/safestack.h>
#include <openssl/symhacks.h>
#define V_ASN1_UNIVERSAL		0x00
#define	V_ASN1_APPLICATION		0x40
#define V_ASN1_CONTEXT_SPECIFIC		0x80
#define V_ASN1_PRIVATE			0xc0

#define V_ASN1_CONSTRUCTED		0x20
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#define V_ASN1_PRIMITIVE_TAG		0x1f
#define V_ASN1_PRIMATIVE_TAG		0x1f

#define V_ASN1_APP_CHOOSE		-2	/* let the recipient choose */
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#define V_ASN1_OTHER			-3	/* used in ASN1_TYPE */
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#define V_ASN1_ANY			-4	/* used in ASN1 template code */
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#define V_ASN1_NEG			0x100	/* negative flag */

#define V_ASN1_UNDEF			-1
#define V_ASN1_EOC			0
#define V_ASN1_BOOLEAN			1	/**/
#define V_ASN1_INTEGER			2
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#define V_ASN1_NEG_INTEGER		(2 | V_ASN1_NEG)
#define V_ASN1_BIT_STRING		3
#define V_ASN1_OCTET_STRING		4
#define V_ASN1_NULL			5
#define V_ASN1_OBJECT			6
#define V_ASN1_OBJECT_DESCRIPTOR	7
#define V_ASN1_EXTERNAL			8
#define V_ASN1_REAL			9
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#define V_ASN1_NEG_ENUMERATED		(10 | V_ASN1_NEG)
#define V_ASN1_UTF8STRING		12
#define V_ASN1_SEQUENCE			16
#define V_ASN1_SET			17
#define V_ASN1_NUMERICSTRING		18	/**/
#define V_ASN1_PRINTABLESTRING		19
#define V_ASN1_T61STRING		20
#define V_ASN1_TELETEXSTRING		20	/* alias */
#define V_ASN1_VIDEOTEXSTRING		21	/**/
#define V_ASN1_IA5STRING		22
#define V_ASN1_UTCTIME			23
#define V_ASN1_GENERALIZEDTIME		24	/**/
#define V_ASN1_GRAPHICSTRING		25	/**/
#define V_ASN1_ISO64STRING		26	/**/
#define V_ASN1_VISIBLESTRING		26	/* alias */
#define V_ASN1_GENERALSTRING		27	/**/
#define V_ASN1_UNIVERSALSTRING		28	/**/
#define V_ASN1_BMPSTRING		30

/* For use with d2i_ASN1_type_bytes() */
#define B_ASN1_NUMERICSTRING	0x0001
#define B_ASN1_PRINTABLESTRING	0x0002
#define B_ASN1_T61STRING	0x0004
#define B_ASN1_TELETEXSTRING	0x0008
#define B_ASN1_VIDEOTEXSTRING	0x0008
#define B_ASN1_IA5STRING	0x0010
#define B_ASN1_GRAPHICSTRING	0x0020
#define B_ASN1_ISO64STRING	0x0040
#define B_ASN1_VISIBLESTRING	0x0040
#define B_ASN1_GENERALSTRING	0x0080
#define B_ASN1_UNIVERSALSTRING	0x0100
#define B_ASN1_OCTET_STRING	0x0200
#define B_ASN1_BIT_STRING	0x0400
#define B_ASN1_BMPSTRING	0x0800
#define B_ASN1_UNKNOWN		0x1000
#define B_ASN1_UTF8STRING	0x2000
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#define B_ASN1_UTCTIME		0x4000
#define B_ASN1_GENERALIZEDTIME	0x8000
#define MBSTRING_FLAG		0x1000
#define MBSTRING_ASC		(MBSTRING_FLAG|1)
#define MBSTRING_BMP		(MBSTRING_FLAG|2)
#define MBSTRING_UNIV		(MBSTRING_FLAG|3)
#define MBSTRING_UTF8		(MBSTRING_FLAG|4)
struct X509_algor_st;

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#define DECLARE_ASN1_SET_OF(type) /* filled in by mkstack.pl */
#define IMPLEMENT_ASN1_SET_OF(type) /* nothing, no longer needed */
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typedef struct asn1_ctx_st
	{
	unsigned char *p;/* work char pointer */
	int eos;	/* end of sequence read for indefinite encoding */
	int error;	/* error code to use when returning an error */
	int inf;	/* constructed if 0x20, indefinite is 0x21 */
	int tag;	/* tag from last 'get object' */
	int xclass;	/* class from last 'get object' */
	long slen;	/* length of last 'get object' */
	unsigned char *max; /* largest value of p allowed */
	unsigned char *q;/* temporary variable */
	unsigned char **pp;/* variable */
	int line;	/* used in error processing */
	} ASN1_CTX;

/* These are used internally in the ASN1_OBJECT to keep track of
 * whether the names and data need to be free()ed */
#define ASN1_OBJECT_FLAG_DYNAMIC	 0x01	/* internal use */
#define ASN1_OBJECT_FLAG_CRITICAL	 0x02	/* critical x509v3 object id */
#define ASN1_OBJECT_FLAG_DYNAMIC_STRINGS 0x04	/* internal use */
#define ASN1_OBJECT_FLAG_DYNAMIC_DATA 	 0x08	/* internal use */
typedef struct asn1_object_st
	{
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	const char *sn,*ln;
	int nid;
	int length;
	unsigned char *data;
	int flags;	/* Should we free this one */
	} ASN1_OBJECT;

#define ASN1_STRING_FLAG_BITS_LEFT 0x08 /* Set if 0x07 has bits left value */
/* This is the base type that holds just about everything :-) */
typedef struct asn1_string_st
	{
	int length;
	int type;
	unsigned char *data;
	/* The value of the following field depends on the type being
	 * held.  It is mostly being used for BIT_STRING so if the
	 * input data has a non-zero 'unused bits' value, it will be
	 * handled correctly */
	long flags;
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/* ASN1_ENCODING structure: this is used to save the received
 * encoding of an ASN1 type. This is useful to get round
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