williamr@2: /* asn1t.h */
williamr@2: /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
williamr@2:  * project 2000.
williamr@2:  */
williamr@2: /* ====================================================================
williamr@2:  * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
williamr@2:  *
williamr@2:  * Redistribution and use in source and binary forms, with or without
williamr@2:  * modification, are permitted provided that the following conditions
williamr@2:  * are met:
williamr@2:  *
williamr@2:  * 1. Redistributions of source code must retain the above copyright
williamr@2:  *    notice, this list of conditions and the following disclaimer. 
williamr@2:  *
williamr@2:  * 2. Redistributions in binary form must reproduce the above copyright
williamr@2:  *    notice, this list of conditions and the following disclaimer in
williamr@2:  *    the documentation and/or other materials provided with the
williamr@2:  *    distribution.
williamr@2:  *
williamr@2:  * 3. All advertising materials mentioning features or use of this
williamr@2:  *    software must display the following acknowledgment:
williamr@2:  *    "This product includes software developed by the OpenSSL Project
williamr@2:  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
williamr@2:  *
williamr@2:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
williamr@2:  *    endorse or promote products derived from this software without
williamr@2:  *    prior written permission. For written permission, please contact
williamr@2:  *    licensing@OpenSSL.org.
williamr@2:  *
williamr@2:  * 5. Products derived from this software may not be called "OpenSSL"
williamr@2:  *    nor may "OpenSSL" appear in their names without prior written
williamr@2:  *    permission of the OpenSSL Project.
williamr@2:  *
williamr@2:  * 6. Redistributions of any form whatsoever must retain the following
williamr@2:  *    acknowledgment:
williamr@2:  *    "This product includes software developed by the OpenSSL Project
williamr@2:  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
williamr@2:  *
williamr@2:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
williamr@2:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
williamr@2:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
williamr@2:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
williamr@2:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
williamr@2:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
williamr@2:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
williamr@2:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
williamr@2:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
williamr@2:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
williamr@2:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
williamr@2:  * OF THE POSSIBILITY OF SUCH DAMAGE.
williamr@2:  * ====================================================================
williamr@2:  *
williamr@2:  * This product includes cryptographic software written by Eric Young
williamr@2:  * (eay@cryptsoft.com).  This product includes software written by Tim
williamr@2:  * Hudson (tjh@cryptsoft.com).
williamr@2:  *
williamr@2:  */
williamr@2: #ifndef HEADER_ASN1T_H
williamr@2: #define HEADER_ASN1T_H
williamr@2: 
williamr@2: #include <stddef.h>
williamr@2: #include <openssl/e_os2.h>
williamr@2: #include <openssl/asn1.h>
williamr@2: 
williamr@2: #ifdef OPENSSL_BUILD_SHLIBCRYPTO
williamr@2: # undef OPENSSL_EXTERN
williamr@2: # define OPENSSL_EXTERN OPENSSL_EXPORT
williamr@2: #endif
williamr@2: 
williamr@2: /* ASN1 template defines, structures and functions */
williamr@2: 
williamr@2: #ifdef  __cplusplus
williamr@2: extern "C" {
williamr@2: #endif
williamr@2: 
williamr@2: 
williamr@2: #ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION
williamr@2: 
williamr@2: /* Macro to obtain ASN1_ADB pointer from a type (only used internally) */
williamr@2: #define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr))
williamr@2: 
williamr@2: 
williamr@2: /* Macros for start and end of ASN1_ITEM definition */
williamr@2: 
williamr@2: #define ASN1_ITEM_start(itname) \
williamr@2: 	OPENSSL_GLOBAL const ASN1_ITEM itname##_it = {
williamr@2: 
williamr@2: #define ASN1_ITEM_end(itname) \
williamr@2: 		};
williamr@2: 
williamr@2: #else
williamr@2: 
williamr@2: /* Macro to obtain ASN1_ADB pointer from a type (only used internally) */
williamr@2: #define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr()))
williamr@2: 
williamr@2: 
williamr@2: /* Macros for start and end of ASN1_ITEM definition */
williamr@2: 
williamr@2: #define ASN1_ITEM_start(itname) \
williamr@2: 	EXPORT_C const ASN1_ITEM * itname##_it(void) \
williamr@2: 	{ \
williamr@2: 		static const ASN1_ITEM local_it = { 
williamr@2: 
williamr@2: #define ASN1_ITEM_end(itname) \
williamr@2: 		}; \
williamr@2: 	return &local_it; \
williamr@2: 	}
williamr@2: 
williamr@2: #endif
williamr@2: 
williamr@2: 
williamr@2: /* Macros to aid ASN1 template writing */
williamr@2: 
williamr@2: #define ASN1_ITEM_TEMPLATE(tname) \
williamr@2: 	static const ASN1_TEMPLATE tname##_item_tt 
williamr@2: 
williamr@2: #define ASN1_ITEM_TEMPLATE_END(tname) \
williamr@2: 	;\
williamr@2: 	ASN1_ITEM_start(tname) \
williamr@2: 		ASN1_ITYPE_PRIMITIVE,\
williamr@2: 		-1,\
williamr@2: 		&tname##_item_tt,\
williamr@2: 		0,\
williamr@2: 		NULL,\
williamr@2: 		0,\
williamr@2: 		#tname \
williamr@2: 	ASN1_ITEM_end(tname)
williamr@2: 
williamr@2: 
williamr@2: /* This is a ASN1 type which just embeds a template */
williamr@2:  
williamr@2: /* This pair helps declare a SEQUENCE. We can do:
williamr@2:  *
williamr@2:  * 	ASN1_SEQUENCE(stname) = {
williamr@2:  * 		... SEQUENCE components ...
williamr@2:  * 	} ASN1_SEQUENCE_END(stname)
williamr@2:  *
williamr@2:  * 	This will produce an ASN1_ITEM called stname_it
williamr@2:  *	for a structure called stname.
williamr@2:  *
williamr@2:  * 	If you want the same structure but a different
williamr@2:  *	name then use:
williamr@2:  *
williamr@2:  * 	ASN1_SEQUENCE(itname) = {
williamr@2:  * 		... SEQUENCE components ...
williamr@2:  * 	} ASN1_SEQUENCE_END_name(stname, itname)
williamr@2:  *
williamr@2:  *	This will create an item called itname_it using
williamr@2:  *	a structure called stname.
williamr@2:  */
williamr@2: 
williamr@2: #define ASN1_SEQUENCE(tname) \
williamr@2: 	static const ASN1_TEMPLATE tname##_seq_tt[] 
williamr@2: 
williamr@2: #define ASN1_SEQUENCE_END(stname) ASN1_SEQUENCE_END_name(stname, stname)
williamr@2: 
williamr@2: #define ASN1_SEQUENCE_END_name(stname, tname) \
williamr@2: 	;\
williamr@2: 	ASN1_ITEM_start(tname) \
williamr@2: 		ASN1_ITYPE_SEQUENCE,\
williamr@2: 		V_ASN1_SEQUENCE,\
williamr@2: 		tname##_seq_tt,\
williamr@2: 		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
williamr@2: 		NULL,\
williamr@2: 		sizeof(stname),\
williamr@2: 		#stname \
williamr@2: 	ASN1_ITEM_end(tname)
williamr@2: 
williamr@2: #define ASN1_NDEF_SEQUENCE(tname) \
williamr@2: 	ASN1_SEQUENCE(tname)
williamr@2: 
williamr@2: #define ASN1_SEQUENCE_cb(tname, cb) \
williamr@2: 	static const ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \
williamr@2: 	ASN1_SEQUENCE(tname)
williamr@2: 
williamr@2: #define ASN1_BROKEN_SEQUENCE(tname) \
williamr@2: 	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_BROKEN, 0, 0, 0, 0}; \
williamr@2: 	ASN1_SEQUENCE(tname)
williamr@2: 
williamr@2: #define ASN1_SEQUENCE_ref(tname, cb, lck) \
williamr@2: 	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_REFCOUNT, offsetof(tname, references), lck, cb, 0}; \
williamr@2: 	ASN1_SEQUENCE(tname)
williamr@2: 
williamr@2: #define ASN1_SEQUENCE_enc(tname, enc, cb) \
williamr@2: 	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_ENCODING, 0, 0, cb, offsetof(tname, enc)}; \
williamr@2: 	ASN1_SEQUENCE(tname)
williamr@2: 
williamr@2: #define ASN1_NDEF_SEQUENCE_END(tname) \
williamr@2: 	;\
williamr@2: 	ASN1_ITEM_start(tname) \
williamr@2: 		ASN1_ITYPE_NDEF_SEQUENCE,\
williamr@2: 		V_ASN1_SEQUENCE,\
williamr@2: 		tname##_seq_tt,\
williamr@2: 		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
williamr@2: 		NULL,\
williamr@2: 		sizeof(tname),\
williamr@2: 		#tname \
williamr@2: 	ASN1_ITEM_end(tname)
williamr@2: 
williamr@2: #define ASN1_BROKEN_SEQUENCE_END(stname) ASN1_SEQUENCE_END_ref(stname, stname)
williamr@2: 
williamr@2: #define ASN1_SEQUENCE_END_enc(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)
williamr@2: 
williamr@2: #define ASN1_SEQUENCE_END_cb(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)
williamr@2: 
williamr@2: #define ASN1_SEQUENCE_END_ref(stname, tname) \
williamr@2: 	;\
williamr@2: 	ASN1_ITEM_start(tname) \
williamr@2: 		ASN1_ITYPE_SEQUENCE,\
williamr@2: 		V_ASN1_SEQUENCE,\
williamr@2: 		tname##_seq_tt,\
williamr@2: 		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
williamr@2: 		&tname##_aux,\
williamr@2: 		sizeof(stname),\
williamr@2: 		#stname \
williamr@2: 	ASN1_ITEM_end(tname)
williamr@2: 
williamr@2: 
williamr@2: /* This pair helps declare a CHOICE type. We can do:
williamr@2:  *
williamr@2:  * 	ASN1_CHOICE(chname) = {
williamr@2:  * 		... CHOICE options ...
williamr@2:  * 	ASN1_CHOICE_END(chname)
williamr@2:  *
williamr@2:  * 	This will produce an ASN1_ITEM called chname_it
williamr@2:  *	for a structure called chname. The structure
williamr@2:  *	definition must look like this:
williamr@2:  *	typedef struct {
williamr@2:  *		int type;
williamr@2:  *		union {
williamr@2:  *			ASN1_SOMETHING *opt1;
williamr@2:  *			ASN1_SOMEOTHER *opt2;
williamr@2:  *		} value;
williamr@2:  *	} chname;
williamr@2:  *	
williamr@2:  *	the name of the selector must be 'type'.
williamr@2:  * 	to use an alternative selector name use the
williamr@2:  *      ASN1_CHOICE_END_selector() version.
williamr@2:  */
williamr@2: 
williamr@2: #define ASN1_CHOICE(tname) \
williamr@2: 	static const ASN1_TEMPLATE tname##_ch_tt[] 
williamr@2: 
williamr@2: #define ASN1_CHOICE_cb(tname, cb) \
williamr@2: 	static const ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \
williamr@2: 	ASN1_CHOICE(tname)
williamr@2: 
williamr@2: #define ASN1_CHOICE_END(stname) ASN1_CHOICE_END_name(stname, stname)
williamr@2: 
williamr@2: #define ASN1_CHOICE_END_name(stname, tname) ASN1_CHOICE_END_selector(stname, tname, type)
williamr@2: 
williamr@2: #define ASN1_CHOICE_END_selector(stname, tname, selname) \
williamr@2: 	;\
williamr@2: 	ASN1_ITEM_start(tname) \
williamr@2: 		ASN1_ITYPE_CHOICE,\
williamr@2: 		offsetof(stname,selname) ,\
williamr@2: 		tname##_ch_tt,\
williamr@2: 		sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
williamr@2: 		NULL,\
williamr@2: 		sizeof(stname),\
williamr@2: 		#stname \
williamr@2: 	ASN1_ITEM_end(tname)
williamr@2: 
williamr@2: #define ASN1_CHOICE_END_cb(stname, tname, selname) \
williamr@2: 	;\
williamr@2: 	ASN1_ITEM_start(tname) \
williamr@2: 		ASN1_ITYPE_CHOICE,\
williamr@2: 		offsetof(stname,selname) ,\
williamr@2: 		tname##_ch_tt,\
williamr@2: 		sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
williamr@2: 		&tname##_aux,\
williamr@2: 		sizeof(stname),\
williamr@2: 		#stname \
williamr@2: 	ASN1_ITEM_end(tname)
williamr@2: 
williamr@2: /* This helps with the template wrapper form of ASN1_ITEM */
williamr@2: 
williamr@2: #define ASN1_EX_TEMPLATE_TYPE(flags, tag, name, type) { \
williamr@2: 	(flags), (tag), 0,\
williamr@2: 	#name, ASN1_ITEM_ref(type) }
williamr@2: 
williamr@2: /* These help with SEQUENCE or CHOICE components */
williamr@2: 
williamr@2: /* used to declare other types */
williamr@2: 
williamr@2: #define ASN1_EX_TYPE(flags, tag, stname, field, type) { \
williamr@2: 	(flags), (tag), offsetof(stname, field),\
williamr@2: 	#field, ASN1_ITEM_ref(type) }
williamr@2: 
williamr@2: /* used when the structure is combined with the parent */
williamr@2: 
williamr@2: #define ASN1_EX_COMBINE(flags, tag, type) { \
williamr@2: 	(flags)|ASN1_TFLG_COMBINE, (tag), 0, NULL, ASN1_ITEM_ref(type) }
williamr@2: 
williamr@2: /* implicit and explicit helper macros */
williamr@2: 
williamr@2: #define ASN1_IMP_EX(stname, field, type, tag, ex) \
williamr@2: 		ASN1_EX_TYPE(ASN1_TFLG_IMPLICIT | ex, tag, stname, field, type)
williamr@2: 
williamr@2: #define ASN1_EXP_EX(stname, field, type, tag, ex) \
williamr@2: 		ASN1_EX_TYPE(ASN1_TFLG_EXPLICIT | ex, tag, stname, field, type)
williamr@2: 
williamr@2: /* Any defined by macros: the field used is in the table itself */
williamr@2: 
williamr@2: #ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION
williamr@2: #define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
williamr@2: #define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
williamr@2: #else
williamr@2: #define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, tblname##_adb }
williamr@2: #define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, tblname##_adb }
williamr@2: #endif
williamr@2: /* Plain simple type */
williamr@2: #define ASN1_SIMPLE(stname, field, type) ASN1_EX_TYPE(0,0, stname, field, type)
williamr@2: 
williamr@2: /* OPTIONAL simple type */
williamr@2: #define ASN1_OPT(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL, 0, stname, field, type)
williamr@2: 
williamr@2: /* IMPLICIT tagged simple type */
williamr@2: #define ASN1_IMP(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, 0)
williamr@2: 
williamr@2: /* IMPLICIT tagged OPTIONAL simple type */
williamr@2: #define ASN1_IMP_OPT(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)
williamr@2: 
williamr@2: /* Same as above but EXPLICIT */
williamr@2: 
williamr@2: #define ASN1_EXP(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, 0)
williamr@2: #define ASN1_EXP_OPT(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)
williamr@2: 
williamr@2: /* SEQUENCE OF type */
williamr@2: #define ASN1_SEQUENCE_OF(stname, field, type) \
williamr@2: 		ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, stname, field, type)
williamr@2: 
williamr@2: /* OPTIONAL SEQUENCE OF */
williamr@2: #define ASN1_SEQUENCE_OF_OPT(stname, field, type) \
williamr@2: 		ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)
williamr@2: 
williamr@2: /* Same as above but for SET OF */
williamr@2: 
williamr@2: #define ASN1_SET_OF(stname, field, type) \
williamr@2: 		ASN1_EX_TYPE(ASN1_TFLG_SET_OF, 0, stname, field, type)
williamr@2: 
williamr@2: #define ASN1_SET_OF_OPT(stname, field, type) \
williamr@2: 		ASN1_EX_TYPE(ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)
williamr@2: 
williamr@2: /* Finally compound types of SEQUENCE, SET, IMPLICIT, EXPLICIT and OPTIONAL */
williamr@2: 
williamr@2: #define ASN1_IMP_SET_OF(stname, field, type, tag) \
williamr@2: 			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)
williamr@2: 
williamr@2: #define ASN1_EXP_SET_OF(stname, field, type, tag) \
williamr@2: 			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)
williamr@2: 
williamr@2: #define ASN1_IMP_SET_OF_OPT(stname, field, type, tag) \
williamr@2: 			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)
williamr@2: 
williamr@2: #define ASN1_EXP_SET_OF_OPT(stname, field, type, tag) \
williamr@2: 			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)
williamr@2: 
williamr@2: #define ASN1_IMP_SEQUENCE_OF(stname, field, type, tag) \
williamr@2: 			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)
williamr@2: 
williamr@2: #define ASN1_IMP_SEQUENCE_OF_OPT(stname, field, type, tag) \
williamr@2: 			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)
williamr@2: 
williamr@2: #define ASN1_EXP_SEQUENCE_OF(stname, field, type, tag) \
williamr@2: 			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)
williamr@2: 
williamr@2: #define ASN1_EXP_SEQUENCE_OF_OPT(stname, field, type, tag) \
williamr@2: 			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)
williamr@2: 
williamr@2: /* EXPLICIT OPTIONAL using indefinite length constructed form */
williamr@2: #define ASN1_NDEF_EXP_OPT(stname, field, type, tag) \
williamr@2: 			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL|ASN1_TFLG_NDEF)
williamr@2: 
williamr@2: /* Macros for the ASN1_ADB structure */
williamr@2: 
williamr@2: #define ASN1_ADB(name) \
williamr@2: 	static const ASN1_ADB_TABLE name##_adbtbl[] 
williamr@2: 
williamr@2: #ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION
williamr@2: 
williamr@2: #define ASN1_ADB_END(name, flags, field, app_table, def, none) \
williamr@2: 	;\
williamr@2: 	static const ASN1_ADB name##_adb = {\
williamr@2: 		flags,\
williamr@2: 		offsetof(name, field),\
williamr@2: 		app_table,\
williamr@2: 		name##_adbtbl,\
williamr@2: 		sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\
williamr@2: 		def,\
williamr@2: 		none\
williamr@2: 	}
williamr@2: 
williamr@2: #else
williamr@2: 
williamr@2: #define ASN1_ADB_END(name, flags, field, app_table, def, none) \
williamr@2: 	;\
williamr@2: 	EXPORT_C static const ASN1_ITEM *name##_adb(void) \
williamr@2: 	{ \
williamr@2: 	static const ASN1_ADB internal_adb = \
williamr@2: 		{\
williamr@2: 		flags,\
williamr@2: 		offsetof(name, field),\
williamr@2: 		app_table,\
williamr@2: 		name##_adbtbl,\
williamr@2: 		sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\
williamr@2: 		def,\
williamr@2: 		none\
williamr@2: 		}; \
williamr@2: 		return (const ASN1_ITEM *) &internal_adb; \
williamr@2: 	} \
williamr@2: 	void dummy_function(void)
williamr@2: 
williamr@2: #endif
williamr@2: 
williamr@2: #define ADB_ENTRY(val, template) {val, template}
williamr@2: 
williamr@2: #define ASN1_ADB_TEMPLATE(name) \
williamr@2: 	static const ASN1_TEMPLATE name##_tt 
williamr@2: 
williamr@2: /* This is the ASN1 template structure that defines
williamr@2:  * a wrapper round the actual type. It determines the
williamr@2:  * actual position of the field in the value structure,
williamr@2:  * various flags such as OPTIONAL and the field name.
williamr@2:  */
williamr@2: 
williamr@2: struct ASN1_TEMPLATE_st {
williamr@2: unsigned long flags;		/* Various flags */
williamr@2: long tag;			/* tag, not used if no tagging */
williamr@2: unsigned long offset;		/* Offset of this field in structure */
williamr@2: #ifndef NO_ASN1_FIELD_NAMES
williamr@2: const char *field_name;		/* Field name */
williamr@2: #endif
williamr@2: ASN1_ITEM_EXP *item;		/* Relevant ASN1_ITEM or ASN1_ADB */
williamr@2: };
williamr@2: 
williamr@2: /* Macro to extract ASN1_ITEM and ASN1_ADB pointer from ASN1_TEMPLATE */
williamr@2: 
williamr@2: #define ASN1_TEMPLATE_item(t) (t->item_ptr)
williamr@2: #define ASN1_TEMPLATE_adb(t) (t->item_ptr)
williamr@2: 
williamr@2: typedef struct ASN1_ADB_TABLE_st ASN1_ADB_TABLE;
williamr@2: typedef struct ASN1_ADB_st ASN1_ADB;
williamr@2: 
williamr@2: struct ASN1_ADB_st {
williamr@2: 	unsigned long flags;	/* Various flags */
williamr@2: 	unsigned long offset;	/* Offset of selector field */
williamr@2: 	STACK_OF(ASN1_ADB_TABLE) **app_items; /* Application defined items */
williamr@2: 	const ASN1_ADB_TABLE *tbl;	/* Table of possible types */
williamr@2: 	long tblcount;		/* Number of entries in tbl */
williamr@2: 	const ASN1_TEMPLATE *default_tt;  /* Type to use if no match */
williamr@2: 	const ASN1_TEMPLATE *null_tt;  /* Type to use if selector is NULL */
williamr@2: };
williamr@2: 
williamr@2: struct ASN1_ADB_TABLE_st {
williamr@2: 	long value;		/* NID for an object or value for an int */
williamr@2: 	const ASN1_TEMPLATE tt;		/* item for this value */
williamr@2: };
williamr@2: 
williamr@2: /* template flags */
williamr@2: 
williamr@2: /* Field is optional */
williamr@2: #define ASN1_TFLG_OPTIONAL	(0x1)
williamr@2: 
williamr@2: /* Field is a SET OF */
williamr@2: #define ASN1_TFLG_SET_OF	(0x1 << 1)
williamr@2: 
williamr@2: /* Field is a SEQUENCE OF */
williamr@2: #define ASN1_TFLG_SEQUENCE_OF	(0x2 << 1)
williamr@2: 
williamr@2: /* Special case: this refers to a SET OF that
williamr@2:  * will be sorted into DER order when encoded *and*
williamr@2:  * the corresponding STACK will be modified to match
williamr@2:  * the new order.
williamr@2:  */
williamr@2: #define ASN1_TFLG_SET_ORDER	(0x3 << 1)
williamr@2: 
williamr@2: /* Mask for SET OF or SEQUENCE OF */
williamr@2: #define ASN1_TFLG_SK_MASK	(0x3 << 1)
williamr@2: 
williamr@2: /* These flags mean the tag should be taken from the
williamr@2:  * tag field. If EXPLICIT then the underlying type
williamr@2:  * is used for the inner tag.
williamr@2:  */
williamr@2: 
williamr@2: /* IMPLICIT tagging */
williamr@2: #define ASN1_TFLG_IMPTAG	(0x1 << 3)
williamr@2: 
williamr@2: 
williamr@2: /* EXPLICIT tagging, inner tag from underlying type */
williamr@2: #define ASN1_TFLG_EXPTAG	(0x2 << 3)
williamr@2: 
williamr@2: #define ASN1_TFLG_TAG_MASK	(0x3 << 3)
williamr@2: 
williamr@2: /* context specific IMPLICIT */
williamr@2: #define ASN1_TFLG_IMPLICIT	ASN1_TFLG_IMPTAG|ASN1_TFLG_CONTEXT
williamr@2: 
williamr@2: /* context specific EXPLICIT */
williamr@2: #define ASN1_TFLG_EXPLICIT	ASN1_TFLG_EXPTAG|ASN1_TFLG_CONTEXT
williamr@2: 
williamr@2: /* If tagging is in force these determine the
williamr@2:  * type of tag to use. Otherwise the tag is
williamr@2:  * determined by the underlying type. These 
williamr@2:  * values reflect the actual octet format.
williamr@2:  */
williamr@2: 
williamr@2: /* Universal tag */ 
williamr@2: #define ASN1_TFLG_UNIVERSAL	(0x0<<6)
williamr@2: /* Application tag */ 
williamr@2: #define ASN1_TFLG_APPLICATION	(0x1<<6)
williamr@2: /* Context specific tag */ 
williamr@2: #define ASN1_TFLG_CONTEXT	(0x2<<6)
williamr@2: /* Private tag */ 
williamr@2: #define ASN1_TFLG_PRIVATE	(0x3<<6)
williamr@2: 
williamr@2: #define ASN1_TFLG_TAG_CLASS	(0x3<<6)
williamr@2: 
williamr@2: /* These are for ANY DEFINED BY type. In this case
williamr@2:  * the 'item' field points to an ASN1_ADB structure
williamr@2:  * which contains a table of values to decode the
williamr@2:  * relevant type
williamr@2:  */
williamr@2: 
williamr@2: #define ASN1_TFLG_ADB_MASK	(0x3<<8)
williamr@2: 
williamr@2: #define ASN1_TFLG_ADB_OID	(0x1<<8)
williamr@2: 
williamr@2: #define ASN1_TFLG_ADB_INT	(0x1<<9)
williamr@2: 
williamr@2: /* This flag means a parent structure is passed
williamr@2:  * instead of the field: this is useful is a
williamr@2:  * SEQUENCE is being combined with a CHOICE for
williamr@2:  * example. Since this means the structure and
williamr@2:  * item name will differ we need to use the
williamr@2:  * ASN1_CHOICE_END_name() macro for example.
williamr@2:  */
williamr@2: 
williamr@2: #define ASN1_TFLG_COMBINE	(0x1<<10)
williamr@2: 
williamr@2: /* This flag when present in a SEQUENCE OF, SET OF
williamr@2:  * or EXPLICIT causes indefinite length constructed
williamr@2:  * encoding to be used if required.
williamr@2:  */
williamr@2: 
williamr@2: #define ASN1_TFLG_NDEF		(0x1<<11)
williamr@2: 
williamr@2: /* This is the actual ASN1 item itself */
williamr@2: 
williamr@2: struct ASN1_ITEM_st {
williamr@2: char itype;			/* The item type, primitive, SEQUENCE, CHOICE or extern */
williamr@2: long utype;			/* underlying type */
williamr@2: const ASN1_TEMPLATE *templates;	/* If SEQUENCE or CHOICE this contains the contents */
williamr@2: long tcount;			/* Number of templates if SEQUENCE or CHOICE */
williamr@2: const void *funcs;		/* functions that handle this type */
williamr@2: long size;			/* Structure size (usually)*/
williamr@2: #ifndef NO_ASN1_FIELD_NAMES
williamr@2: const char *sname;		/* Structure name */
williamr@2: #endif
williamr@2: };
williamr@2: 
williamr@2: /* These are values for the itype field and
williamr@2:  * determine how the type is interpreted.
williamr@2:  *
williamr@2:  * For PRIMITIVE types the underlying type
williamr@2:  * determines the behaviour if items is NULL.
williamr@2:  *
williamr@2:  * Otherwise templates must contain a single 
williamr@2:  * template and the type is treated in the
williamr@2:  * same way as the type specified in the template.
williamr@2:  *
williamr@2:  * For SEQUENCE types the templates field points
williamr@2:  * to the members, the size field is the
williamr@2:  * structure size.
williamr@2:  *
williamr@2:  * For CHOICE types the templates field points
williamr@2:  * to each possible member (typically a union)
williamr@2:  * and the 'size' field is the offset of the
williamr@2:  * selector.
williamr@2:  *
williamr@2:  * The 'funcs' field is used for application
williamr@2:  * specific functions. 
williamr@2:  *
williamr@2:  * For COMPAT types the funcs field gives a
williamr@2:  * set of functions that handle this type, this
williamr@2:  * supports the old d2i, i2d convention.
williamr@2:  *
williamr@2:  * The EXTERN type uses a new style d2i/i2d.
williamr@2:  * The new style should be used where possible
williamr@2:  * because it avoids things like the d2i IMPLICIT
williamr@2:  * hack.
williamr@2:  *
williamr@2:  * MSTRING is a multiple string type, it is used
williamr@2:  * for a CHOICE of character strings where the
williamr@2:  * actual strings all occupy an ASN1_STRING
williamr@2:  * structure. In this case the 'utype' field
williamr@2:  * has a special meaning, it is used as a mask
williamr@2:  * of acceptable types using the B_ASN1 constants.
williamr@2:  *
williamr@2:  * NDEF_SEQUENCE is the same as SEQUENCE except
williamr@2:  * that it will use indefinite length constructed
williamr@2:  * encoding if requested.
williamr@2:  *
williamr@2:  */
williamr@2: 
williamr@2: #define ASN1_ITYPE_PRIMITIVE		0x0
williamr@2: 
williamr@2: #define ASN1_ITYPE_SEQUENCE		0x1
williamr@2: 
williamr@2: #define ASN1_ITYPE_CHOICE		0x2
williamr@2: 
williamr@2: #define ASN1_ITYPE_COMPAT		0x3
williamr@2: 
williamr@2: #define ASN1_ITYPE_EXTERN		0x4
williamr@2: 
williamr@2: #define ASN1_ITYPE_MSTRING		0x5
williamr@2: 
williamr@2: #define ASN1_ITYPE_NDEF_SEQUENCE	0x6
williamr@2: 
williamr@2: /* Cache for ASN1 tag and length, so we
williamr@2:  * don't keep re-reading it for things
williamr@2:  * like CHOICE
williamr@2:  */
williamr@2: 
williamr@2: struct ASN1_TLC_st{
williamr@2: 	char valid;	/* Values below are valid */
williamr@2: 	int ret;	/* return value */
williamr@2: 	long plen;	/* length */
williamr@2: 	int ptag;	/* class value */
williamr@2: 	int pclass;	/* class value */
williamr@2: 	int hdrlen;	/* header length */
williamr@2: };
williamr@2: 
williamr@2: /* Typedefs for ASN1 function pointers */
williamr@2: 
williamr@2: typedef ASN1_VALUE * ASN1_new_func(void);
williamr@2: typedef void ASN1_free_func(ASN1_VALUE *a);
williamr@2: typedef ASN1_VALUE * ASN1_d2i_func(ASN1_VALUE **a, const unsigned char ** in, long length);
williamr@2: typedef int ASN1_i2d_func(ASN1_VALUE * a, unsigned char **in);
williamr@2: 
williamr@2: typedef int ASN1_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_ITEM *it,
williamr@2: 					int tag, int aclass, char opt, ASN1_TLC *ctx);
williamr@2: 
williamr@2: typedef int ASN1_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
williamr@2: typedef int ASN1_ex_new_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
williamr@2: typedef void ASN1_ex_free_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
williamr@2: 
williamr@2: typedef int ASN1_primitive_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
williamr@2: typedef int ASN1_primitive_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
williamr@2: 
williamr@2: typedef struct ASN1_COMPAT_FUNCS_st {
williamr@2: 	ASN1_new_func *asn1_new;
williamr@2: 	ASN1_free_func *asn1_free;
williamr@2: 	ASN1_d2i_func *asn1_d2i;
williamr@2: 	ASN1_i2d_func *asn1_i2d;
williamr@2: } ASN1_COMPAT_FUNCS;
williamr@2: 
williamr@2: typedef struct ASN1_EXTERN_FUNCS_st {
williamr@2: 	void *app_data;
williamr@2: 	ASN1_ex_new_func *asn1_ex_new;
williamr@2: 	ASN1_ex_free_func *asn1_ex_free;
williamr@2: 	ASN1_ex_free_func *asn1_ex_clear;
williamr@2: 	ASN1_ex_d2i *asn1_ex_d2i;
williamr@2: 	ASN1_ex_i2d *asn1_ex_i2d;
williamr@2: } ASN1_EXTERN_FUNCS;
williamr@2: 
williamr@2: typedef struct ASN1_PRIMITIVE_FUNCS_st {
williamr@2: 	void *app_data;
williamr@2: 	unsigned long flags;
williamr@2: 	ASN1_ex_new_func *prim_new;
williamr@2: 	ASN1_ex_free_func *prim_free;
williamr@2: 	ASN1_ex_free_func *prim_clear;
williamr@2: 	ASN1_primitive_c2i *prim_c2i;
williamr@2: 	ASN1_primitive_i2c *prim_i2c;
williamr@2: } ASN1_PRIMITIVE_FUNCS;
williamr@2: 
williamr@2: /* This is the ASN1_AUX structure: it handles various
williamr@2:  * miscellaneous requirements. For example the use of
williamr@2:  * reference counts and an informational callback.
williamr@2:  *
williamr@2:  * The "informational callback" is called at various
williamr@2:  * points during the ASN1 encoding and decoding. It can
williamr@2:  * be used to provide minor customisation of the structures
williamr@2:  * used. This is most useful where the supplied routines
williamr@2:  * *almost* do the right thing but need some extra help
williamr@2:  * at a few points. If the callback returns zero then
williamr@2:  * it is assumed a fatal error has occurred and the 
williamr@2:  * main operation should be abandoned.
williamr@2:  *
williamr@2:  * If major changes in the default behaviour are required
williamr@2:  * then an external type is more appropriate.
williamr@2:  */
williamr@2: 
williamr@2: typedef int ASN1_aux_cb(int operation, ASN1_VALUE **in, const ASN1_ITEM *it);
williamr@2: 
williamr@2: typedef struct ASN1_AUX_st {
williamr@2: 	void *app_data;
williamr@2: 	int flags;
williamr@2: 	int ref_offset;		/* Offset of reference value */
williamr@2: 	int ref_lock;		/* Lock type to use */
williamr@2: 	ASN1_aux_cb *asn1_cb;
williamr@2: 	int enc_offset;		/* Offset of ASN1_ENCODING structure */
williamr@2: } ASN1_AUX;
williamr@2: 
williamr@2: /* Flags in ASN1_AUX */
williamr@2: 
williamr@2: /* Use a reference count */
williamr@2: #define ASN1_AFLG_REFCOUNT	1
williamr@2: /* Save the encoding of structure (useful for signatures) */
williamr@2: #define ASN1_AFLG_ENCODING	2
williamr@2: /* The Sequence length is invalid */
williamr@2: #define ASN1_AFLG_BROKEN	4
williamr@2: 
williamr@2: /* operation values for asn1_cb */
williamr@2: 
williamr@2: #define ASN1_OP_NEW_PRE		0
williamr@2: #define ASN1_OP_NEW_POST	1
williamr@2: #define ASN1_OP_FREE_PRE	2
williamr@2: #define ASN1_OP_FREE_POST	3
williamr@2: #define ASN1_OP_D2I_PRE		4
williamr@2: #define ASN1_OP_D2I_POST	5
williamr@2: #define ASN1_OP_I2D_PRE		6
williamr@2: #define ASN1_OP_I2D_POST	7
williamr@2: 
williamr@2: /* Macro to implement a primitive type */
williamr@2: #define IMPLEMENT_ASN1_TYPE(stname) IMPLEMENT_ASN1_TYPE_ex(stname, stname, 0)
williamr@2: #define IMPLEMENT_ASN1_TYPE_ex(itname, vname, ex) \
williamr@2: 				ASN1_ITEM_start(itname) \
williamr@2: 					ASN1_ITYPE_PRIMITIVE, V_##vname, NULL, 0, NULL, ex, #itname \
williamr@2: 				ASN1_ITEM_end(itname)
williamr@2: 
williamr@2: /* Macro to implement a multi string type */
williamr@2: #define IMPLEMENT_ASN1_MSTRING(itname, mask) \
williamr@2: 				ASN1_ITEM_start(itname) \
williamr@2: 					ASN1_ITYPE_MSTRING, mask, NULL, 0, NULL, sizeof(ASN1_STRING), #itname \
williamr@2: 				ASN1_ITEM_end(itname)
williamr@2: 
williamr@2: /* Macro to implement an ASN1_ITEM in terms of old style funcs */
williamr@2: 
williamr@2: #define IMPLEMENT_COMPAT_ASN1(sname) IMPLEMENT_COMPAT_ASN1_type(sname, V_ASN1_SEQUENCE)
williamr@2: 
williamr@2: #define IMPLEMENT_COMPAT_ASN1_type(sname, tag) \
williamr@2: 	static const ASN1_COMPAT_FUNCS sname##_ff = { \
williamr@2: 		(ASN1_new_func *)sname##_new, \
williamr@2: 		(ASN1_free_func *)sname##_free, \
williamr@2: 		(ASN1_d2i_func *)d2i_##sname, \
williamr@2: 		(ASN1_i2d_func *)i2d_##sname, \
williamr@2: 	}; \
williamr@2: 	ASN1_ITEM_start(sname) \
williamr@2: 		ASN1_ITYPE_COMPAT, \
williamr@2: 		tag, \
williamr@2: 		NULL, \
williamr@2: 		0, \
williamr@2: 		&sname##_ff, \
williamr@2: 		0, \
williamr@2: 		#sname \
williamr@2: 	ASN1_ITEM_end(sname)
williamr@2: 
williamr@2: #define IMPLEMENT_EXTERN_ASN1(sname, tag, fptrs) \
williamr@2: 	ASN1_ITEM_start(sname) \
williamr@2: 		ASN1_ITYPE_EXTERN, \
williamr@2: 		tag, \
williamr@2: 		NULL, \
williamr@2: 		0, \
williamr@2: 		&fptrs, \
williamr@2: 		0, \
williamr@2: 		#sname \
williamr@2: 	ASN1_ITEM_end(sname)
williamr@2: 
williamr@2: /* Macro to implement standard functions in terms of ASN1_ITEM structures */
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_FUNCTIONS(stname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, stname, stname)
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_FUNCTIONS_name(stname, itname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, itname)
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_FUNCTIONS_ENCODE_name(stname, itname) \
williamr@2: 			IMPLEMENT_ASN1_FUNCTIONS_ENCODE_fname(stname, itname, itname)
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_ALLOC_FUNCTIONS(stname) \
williamr@2: 		IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, stname, stname)
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) \
williamr@2: 	EXPORT_C stname *fname##_new(void) \
williamr@2: 	{ \
williamr@2: 		return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
williamr@2: 	} \
williamr@2: 	EXPORT_C void fname##_free(stname *a) \
williamr@2: 	{ \
williamr@2: 		ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
williamr@2: 	}
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, fname) \
williamr@2: 	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
williamr@2: 	IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
williamr@2: 	EXPORT_C stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
williamr@2: 	{ \
williamr@2: 		return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
williamr@2: 	} \
williamr@2: 	EXPORT_C int i2d_##fname(stname *a, unsigned char **out) \
williamr@2: 	{ \
williamr@2: 		return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
williamr@2: 	} 
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_NDEF_FUNCTION(stname) \
williamr@2: 	EXPORT_C int i2d_##stname##_NDEF(stname *a, unsigned char **out) \
williamr@2: 	{ \
williamr@2: 		return ASN1_item_ndef_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(stname));\
williamr@2: 	} 
williamr@2: 
williamr@2: /* This includes evil casts to remove const: they will go away when full
williamr@2:  * ASN1 constification is done.
williamr@2:  */
williamr@2: #define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
williamr@2: 	EXPORT_C stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
williamr@2: 	{ \
williamr@2: 		return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
williamr@2: 	} \
williamr@2: 	EXPORT_C int i2d_##fname(const stname *a, unsigned char **out) \
williamr@2: 	{ \
williamr@2: 		return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
williamr@2: 	} 
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_DUP_FUNCTION(stname) \
williamr@2: 	EXPORT_C stname * stname##_dup(stname *x) \
williamr@2:         { \
williamr@2:         return ASN1_item_dup(ASN1_ITEM_rptr(stname), x); \
williamr@2:         }
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_FUNCTIONS_const(name) \
williamr@2: 		IMPLEMENT_ASN1_FUNCTIONS_const_fname(name, name, name)
williamr@2: 
williamr@2: #define IMPLEMENT_ASN1_FUNCTIONS_const_fname(stname, itname, fname) \
williamr@2: 	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
williamr@2: 	IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)
williamr@2: 
williamr@2: /* external definitions for primitive types */
williamr@2: 
williamr@2: DECLARE_ASN1_ITEM(ASN1_BOOLEAN)
williamr@2: DECLARE_ASN1_ITEM(ASN1_TBOOLEAN)
williamr@2: DECLARE_ASN1_ITEM(ASN1_FBOOLEAN)
williamr@2: DECLARE_ASN1_ITEM(ASN1_SEQUENCE)
williamr@2: DECLARE_ASN1_ITEM(CBIGNUM)
williamr@2: DECLARE_ASN1_ITEM(BIGNUM)
williamr@2: DECLARE_ASN1_ITEM(LONG)
williamr@2: DECLARE_ASN1_ITEM(ZLONG)
williamr@2: 
williamr@2: DECLARE_STACK_OF(ASN1_VALUE)
williamr@2: 
williamr@2: /* Functions used internally by the ASN1 code */
williamr@2: 
williamr@2: IMPORT_C int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
williamr@2: IMPORT_C void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
williamr@2: int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
williamr@2: int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
williamr@2: 
williamr@2: IMPORT_C void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
williamr@2: int ASN1_template_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_TEMPLATE *tt);
williamr@2: IMPORT_C int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_ITEM *it,
williamr@2: 				int tag, int aclass, char opt, ASN1_TLC *ctx);
williamr@2: 
williamr@2: IMPORT_C int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
williamr@2: int ASN1_template_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_TEMPLATE *tt);
williamr@2: IMPORT_C void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
williamr@2: 
williamr@2: int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
williamr@2: int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
williamr@2: 
williamr@2: IMPORT_C int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it);
williamr@2: IMPORT_C int asn1_set_choice_selector(ASN1_VALUE **pval, int value, const ASN1_ITEM *it);
williamr@2: 
williamr@2: IMPORT_C ASN1_VALUE ** asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
williamr@2: 
williamr@2: IMPORT_C const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt, int nullerr);
williamr@2: 
williamr@2: IMPORT_C int asn1_do_lock(ASN1_VALUE **pval, int op, const ASN1_ITEM *it);
williamr@2: 
williamr@2: IMPORT_C void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it);
williamr@2: IMPORT_C void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
williamr@2: IMPORT_C int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval, const ASN1_ITEM *it);
williamr@2: IMPORT_C int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen, const ASN1_ITEM *it);
williamr@2: 
williamr@2: #ifdef  __cplusplus
williamr@2: }
williamr@2: #endif
williamr@2: #endif