/* asn1t.h */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
 * project 2000.
 */
/* ====================================================================
 * Copyright (c) 2000 The OpenSSL Project.  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. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED 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 OpenSSL PROJECT OR
 * ITS 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.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
#ifndef HEADER_ASN1T_H
#define HEADER_ASN1T_H

#include <stddef.h>
#include <openssl/e_os2.h>
#include <openssl/asn1.h>

#ifdef OPENSSL_BUILD_SHLIBCRYPTO
# undef OPENSSL_EXTERN
# define OPENSSL_EXTERN OPENSSL_EXPORT
#endif

/* ASN1 template defines, structures and functions */

#ifdef  __cplusplus
extern "C" {
#endif


#ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION

/* Macro to obtain ASN1_ADB pointer from a type (only used internally) */
#define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr))


/* Macros for start and end of ASN1_ITEM definition */

#define ASN1_ITEM_start(itname) \
	OPENSSL_GLOBAL const ASN1_ITEM itname##_it = {

#define ASN1_ITEM_end(itname) \
		};

#else

/* Macro to obtain ASN1_ADB pointer from a type (only used internally) */
#define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr()))


/* Macros for start and end of ASN1_ITEM definition */

#define ASN1_ITEM_start(itname) \
	const ASN1_ITEM * itname##_it(void) \
	{ \
		static const ASN1_ITEM local_it = { 

#define ASN1_ITEM_end(itname) \
		}; \
	return &local_it; \
	}

#endif


/* Macros to aid ASN1 template writing */

#define ASN1_ITEM_TEMPLATE(tname) \
	static const ASN1_TEMPLATE tname##_item_tt 

#define ASN1_ITEM_TEMPLATE_END(tname) \
	;\
	ASN1_ITEM_start(tname) \
		ASN1_ITYPE_PRIMITIVE,\
		-1,\
		&tname##_item_tt,\
		0,\
		NULL,\
		0,\
		#tname \
	ASN1_ITEM_end(tname)


/* This is a ASN1 type which just embeds a template */
 
/* This pair helps declare a SEQUENCE. We can do:
 *
 * 	ASN1_SEQUENCE(stname) = {
 * 		... SEQUENCE components ...
 * 	} ASN1_SEQUENCE_END(stname)
 *
 * 	This will produce an ASN1_ITEM called stname_it
 *	for a structure called stname.
 *
 * 	If you want the same structure but a different
 *	name then use:
 *
 * 	ASN1_SEQUENCE(itname) = {
 * 		... SEQUENCE components ...
 * 	} ASN1_SEQUENCE_END_name(stname, itname)
 *
 *	This will create an item called itname_it using
 *	a structure called stname.
 */

#define ASN1_SEQUENCE(tname) \
	static const ASN1_TEMPLATE tname##_seq_tt[] 

#define ASN1_SEQUENCE_END(stname) ASN1_SEQUENCE_END_name(stname, stname)

#define ASN1_SEQUENCE_END_name(stname, tname) \
	;\
	ASN1_ITEM_start(tname) \
		ASN1_ITYPE_SEQUENCE,\
		V_ASN1_SEQUENCE,\
		tname##_seq_tt,\
		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
		NULL,\
		sizeof(stname),\
		#stname \
	ASN1_ITEM_end(tname)

#define ASN1_NDEF_SEQUENCE(tname) \
	ASN1_SEQUENCE(tname)

#define ASN1_SEQUENCE_cb(tname, cb) \
	static const ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \
	ASN1_SEQUENCE(tname)

#define ASN1_BROKEN_SEQUENCE(tname) \
	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_BROKEN, 0, 0, 0, 0}; \
	ASN1_SEQUENCE(tname)

#define ASN1_SEQUENCE_ref(tname, cb, lck) \
	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_REFCOUNT, offsetof(tname, references), lck, cb, 0}; \
	ASN1_SEQUENCE(tname)

#define ASN1_SEQUENCE_enc(tname, enc, cb) \
	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_ENCODING, 0, 0, cb, offsetof(tname, enc)}; \
	ASN1_SEQUENCE(tname)

#define ASN1_NDEF_SEQUENCE_END(tname) \
	;\
	ASN1_ITEM_start(tname) \
		ASN1_ITYPE_NDEF_SEQUENCE,\
		V_ASN1_SEQUENCE,\
		tname##_seq_tt,\
		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
		NULL,\
		sizeof(tname),\
		#tname \
	ASN1_ITEM_end(tname)

#define ASN1_BROKEN_SEQUENCE_END(stname) ASN1_SEQUENCE_END_ref(stname, stname)

#define ASN1_SEQUENCE_END_enc(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)

#define ASN1_SEQUENCE_END_cb(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)

#define ASN1_SEQUENCE_END_ref(stname, tname) \
	;\
	ASN1_ITEM_start(tname) \
		ASN1_ITYPE_SEQUENCE,\
		V_ASN1_SEQUENCE,\
		tname##_seq_tt,\
		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
		&tname##_aux,\
		sizeof(stname),\
		#stname \
	ASN1_ITEM_end(tname)


/* This pair helps declare a CHOICE type. We can do:
 *
 * 	ASN1_CHOICE(chname) = {
 * 		... CHOICE options ...
 * 	ASN1_CHOICE_END(chname)
 *
 * 	This will produce an ASN1_ITEM called chname_it
 *	for a structure called chname. The structure
 *	definition must look like this:
 *	typedef struct {
 *		int type;
 *		union {
 *			ASN1_SOMETHING *opt1;
 *			ASN1_SOMEOTHER *opt2;
 *		} value;
 *	} chname;
 *	
 *	the name of the selector must be 'type'.
 * 	to use an alternative selector name use the
 *      ASN1_CHOICE_END_selector() version.
 */

#define ASN1_CHOICE(tname) \
	static const ASN1_TEMPLATE tname##_ch_tt[] 

#define ASN1_CHOICE_cb(tname, cb) \
	static const ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \
	ASN1_CHOICE(tname)

#define ASN1_CHOICE_END(stname) ASN1_CHOICE_END_name(stname, stname)

#define ASN1_CHOICE_END_name(stname, tname) ASN1_CHOICE_END_selector(stname, tname, type)

#define ASN1_CHOICE_END_selector(stname, tname, selname) \
	;\
	ASN1_ITEM_start(tname) \
		ASN1_ITYPE_CHOICE,\
		offsetof(stname,selname) ,\
		tname##_ch_tt,\
		sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
		NULL,\
		sizeof(stname),\
		#stname \
	ASN1_ITEM_end(tname)

#define ASN1_CHOICE_END_cb(stname, tname, selname) \
	;\
	ASN1_ITEM_start(tname) \
		ASN1_ITYPE_CHOICE,\
		offsetof(stname,selname) ,\
		tname##_ch_tt,\
		sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
		&tname##_aux,\
		sizeof(stname),\
		#stname \
	ASN1_ITEM_end(tname)

/* This helps with the template wrapper form of ASN1_ITEM */

#define ASN1_EX_TEMPLATE_TYPE(flags, tag, name, type) { \
	(flags), (tag), 0,\
	#name, ASN1_ITEM_ref(type) }

/* These help with SEQUENCE or CHOICE components */

/* used to declare other types */

#define ASN1_EX_TYPE(flags, tag, stname, field, type) { \
	(flags), (tag), offsetof(stname, field),\
	#field, ASN1_ITEM_ref(type) }

/* used when the structure is combined with the parent */

#define ASN1_EX_COMBINE(flags, tag, type) { \
	(flags)|ASN1_TFLG_COMBINE, (tag), 0, NULL, ASN1_ITEM_ref(type) }

/* implicit and explicit helper macros */

#define ASN1_IMP_EX(stname, field, type, tag, ex) \
		ASN1_EX_TYPE(ASN1_TFLG_IMPLICIT | ex, tag, stname, field, type)

#define ASN1_EXP_EX(stname, field, type, tag, ex) \
		ASN1_EX_TYPE(ASN1_TFLG_EXPLICIT | ex, tag, stname, field, type)

/* Any defined by macros: the field used is in the table itself */

#ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION
#define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
#define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
#else
#define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, tblname##_adb }
#define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, tblname##_adb }
#endif
/* Plain simple type */
#define ASN1_SIMPLE(stname, field, type) ASN1_EX_TYPE(0,0, stname, field, type)

/* OPTIONAL simple type */
#define ASN1_OPT(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL, 0, stname, field, type)

/* IMPLICIT tagged simple type */
#define ASN1_IMP(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, 0)

/* IMPLICIT tagged OPTIONAL simple type */
#define ASN1_IMP_OPT(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)

/* Same as above but EXPLICIT */

#define ASN1_EXP(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, 0)
#define ASN1_EXP_OPT(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)

/* SEQUENCE OF type */
#define ASN1_SEQUENCE_OF(stname, field, type) \
		ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, stname, field, type)

/* OPTIONAL SEQUENCE OF */
#define ASN1_SEQUENCE_OF_OPT(stname, field, type) \
		ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)

/* Same as above but for SET OF */

#define ASN1_SET_OF(stname, field, type) \
		ASN1_EX_TYPE(ASN1_TFLG_SET_OF, 0, stname, field, type)

#define ASN1_SET_OF_OPT(stname, field, type) \
		ASN1_EX_TYPE(ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)

/* Finally compound types of SEQUENCE, SET, IMPLICIT, EXPLICIT and OPTIONAL */

#define ASN1_IMP_SET_OF(stname, field, type, tag) \
			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)

#define ASN1_EXP_SET_OF(stname, field, type, tag) \
			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)

#define ASN1_IMP_SET_OF_OPT(stname, field, type, tag) \
			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)

#define ASN1_EXP_SET_OF_OPT(stname, field, type, tag) \
			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)

#define ASN1_IMP_SEQUENCE_OF(stname, field, type, tag) \
			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)

#define ASN1_IMP_SEQUENCE_OF_OPT(stname, field, type, tag) \
			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)

#define ASN1_EXP_SEQUENCE_OF(stname, field, type, tag) \
			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)

#define ASN1_EXP_SEQUENCE_OF_OPT(stname, field, type, tag) \
			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)

/* EXPLICIT OPTIONAL using indefinite length constructed form */
#define ASN1_NDEF_EXP_OPT(stname, field, type, tag) \
			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL|ASN1_TFLG_NDEF)

/* Macros for the ASN1_ADB structure */

#define ASN1_ADB(name) \
	static const ASN1_ADB_TABLE name##_adbtbl[] 

#ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION

#define ASN1_ADB_END(name, flags, field, app_table, def, none) \
	;\
	static const ASN1_ADB name##_adb = {\
		flags,\
		offsetof(name, field),\
		app_table,\
		name##_adbtbl,\
		sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\
		def,\
		none\
	}

#else

#define ASN1_ADB_END(name, flags, field, app_table, def, none) \
	;\
	static const ASN1_ITEM *name##_adb(void) \
	{ \
	static const ASN1_ADB internal_adb = \
		{\
		flags,\
		offsetof(name, field),\
		app_table,\
		name##_adbtbl,\
		sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\
		def,\
		none\
		}; \
		return (const ASN1_ITEM *) &internal_adb; \
	} \
	void dummy_function(void)

#endif

#define ADB_ENTRY(val, template) {val, template}

#define ASN1_ADB_TEMPLATE(name) \
	static const ASN1_TEMPLATE name##_tt 

/* This is the ASN1 template structure that defines
 * a wrapper round the actual type. It determines the
 * actual position of the field in the value structure,
 * various flags such as OPTIONAL and the field name.
 */

struct ASN1_TEMPLATE_st {
unsigned long flags;		/* Various flags */
long tag;			/* tag, not used if no tagging */
unsigned long offset;		/* Offset of this field in structure */
#ifndef NO_ASN1_FIELD_NAMES
const char *field_name;		/* Field name */
#endif
ASN1_ITEM_EXP *item;		/* Relevant ASN1_ITEM or ASN1_ADB */
};

/* Macro to extract ASN1_ITEM and ASN1_ADB pointer from ASN1_TEMPLATE */

#define ASN1_TEMPLATE_item(t) (t->item_ptr)
#define ASN1_TEMPLATE_adb(t) (t->item_ptr)

typedef struct ASN1_ADB_TABLE_st ASN1_ADB_TABLE;
typedef struct ASN1_ADB_st ASN1_ADB;