/* tasn_new.c *//* 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). * */#include <stddef.h>#include <openssl/asn1.h>#include <openssl/objects.h>#include <openssl/err.h>#include <openssl/asn1t.h>#include <string.h>static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine);static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it){	ASN1_VALUE *ret = NULL;	if(ASN1_item_ex_new(&ret, it) > 0) return ret;	return NULL;}/* Allocate an ASN1 structure */int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it){	return asn1_item_ex_combine_new(pval, it, 0);}static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine){	const ASN1_TEMPLATE *tt = NULL;	const ASN1_COMPAT_FUNCS *cf;	const ASN1_EXTERN_FUNCS *ef;	const ASN1_AUX *aux = it->funcs;	ASN1_aux_cb *asn1_cb;	ASN1_VALUE **pseqval;	int i;	if(aux && aux->asn1_cb) asn1_cb = aux->asn1_cb;	else asn1_cb = 0;	if(!combine) *pval = NULL;#ifdef CRYPTO_MDEBUG	if(it->sname) CRYPTO_push_info(it->sname);#endif	switch(it->itype) {		case ASN1_ITYPE_EXTERN:		ef = it->funcs;		if(ef && ef->asn1_ex_new) {			if(!ef->asn1_ex_new(pval, it))				goto memerr;		}		break;		case ASN1_ITYPE_COMPAT:		cf = it->funcs;		if(cf && cf->asn1_new) {			*pval = cf->asn1_new();			if(!*pval) goto memerr;		}		break;		case ASN1_ITYPE_PRIMITIVE:		if(it->templates) {			if(!ASN1_template_new(pval, it->templates))				goto memerr;		} else {			if(!ASN1_primitive_new(pval, it))				goto memerr;		}		break;		case ASN1_ITYPE_MSTRING:		if(!ASN1_primitive_new(pval, it))				goto memerr;		break;		case ASN1_ITYPE_CHOICE:		if(asn1_cb) {			i = asn1_cb(ASN1_OP_NEW_PRE, pval, it);			if(!i) goto auxerr;			if(i==2) {#ifdef CRYPTO_MDEBUG				if(it->sname) CRYPTO_pop_info();#endif				return 1;			}		}		if(!combine) {			*pval = OPENSSL_malloc(it->size);			if(!*pval) goto memerr;			memset(*pval, 0, it->size);		}		asn1_set_choice_selector(pval, -1, it);		if(asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it))				goto auxerr;		break;		case ASN1_ITYPE_SEQUENCE:		if(asn1_cb) {			i = asn1_cb(ASN1_OP_NEW_PRE, pval, it);			if(!i) goto auxerr;			if(i==2) {#ifdef CRYPTO_MDEBUG				if(it->sname) CRYPTO_pop_info();#endif				return 1;			}		}		if(!combine) {			*pval = OPENSSL_malloc(it->size);			if(!*pval) goto memerr;			memset(*pval, 0, it->size);			asn1_do_lock(pval, 0, it);			asn1_enc_init(pval, it);		}		for(i = 0, tt = it->templates; i < it->tcount; tt++, i++) {			pseqval = asn1_get_field_ptr(pval, tt);			if(!ASN1_template_new(pseqval, tt)) goto memerr;		}		if(asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it))				goto auxerr;		break;	}#ifdef CRYPTO_MDEBUG	if(it->sname) CRYPTO_pop_info();#endif	return 1;	memerr:	ASN1err(ASN1_F_ASN1_ITEM_NEW, ERR_R_MALLOC_FAILURE);#ifdef CRYPTO_MDEBUG	if(it->sname) CRYPTO_pop_info();#endif	return 0;	auxerr:	ASN1err(ASN1_F_ASN1_ITEM_NEW, ASN1_R_AUX_ERROR);	ASN1_item_ex_free(pval, it);#ifdef CRYPTO_MDEBUG	if(it->sname) CRYPTO_pop_info();#endif	return 0;}static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it){	const ASN1_EXTERN_FUNCS *ef;	switch(it->itype) {		case ASN1_ITYPE_EXTERN:		ef = it->funcs;		if(ef && ef->asn1_ex_clear) 			ef->asn1_ex_clear(pval, it);		else *pval = NULL;		break;		case ASN1_ITYPE_PRIMITIVE:		if(it->templates) 			asn1_template_clear(pval, it->templates);		else			asn1_primitive_clear(pval, it);		break;		case ASN1_ITYPE_MSTRING:		asn1_primitive_clear(pval, it);		break;		case ASN1_ITYPE_COMPAT:		case ASN1_ITYPE_CHOICE:		case ASN1_ITYPE_SEQUENCE:		*pval = NULL;		break;	}}int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt){	const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);	int ret;	if(tt->flags & ASN1_TFLG_OPTIONAL) {		asn1_template_clear(pval, tt);		return 1;	}	/* If ANY DEFINED BY nothing to do */	if(tt->flags & ASN1_TFLG_ADB_MASK) {		*pval = NULL;		return 1;	}#ifdef CRYPTO_MDEBUG	if(tt->field_name) CRYPTO_push_info(tt->field_name);#endif	/* If SET OF or SEQUENCE OF, its a STACK */	if(tt->flags & ASN1_TFLG_SK_MASK) {		STACK_OF(ASN1_VALUE) *skval;		skval = sk_ASN1_VALUE_new_null();		if(!skval) {			ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE);			ret = 0;			goto done;		}		*pval = (ASN1_VALUE *)skval;		ret = 1;		goto done;	}	/* Otherwise pass it back to the item routine */	ret = asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE);	done:#ifdef CRYPTO_MDEBUG	if(it->sname) CRYPTO_pop_info();#endif	return ret;}static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt){	/* If ADB or STACK just NULL the field */	if(tt->flags & (ASN1_TFLG_ADB_MASK|ASN1_TFLG_SK_MASK)) 		*pval = NULL;	else		asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));}/* NB: could probably combine most of the real XXX_new() behaviour and junk all the old * functions. */int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it){	ASN1_TYPE *typ;	int utype;	const ASN1_PRIMITIVE_FUNCS *pf;	pf = it->funcs;	if(pf && pf->prim_new) return pf->prim_new(pval, it);	if(!it || (it->itype == ASN1_ITYPE_MSTRING)) utype = -1;	else utype = it->utype;	switch(utype) {		case V_ASN1_OBJECT:		*pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);		return 1;		case V_ASN1_BOOLEAN:		if (it)			*(ASN1_BOOLEAN *)pval = it->size;		else			*(ASN1_BOOLEAN *)pval = -1;		return 1;		case V_ASN1_NULL:		*pval = (ASN1_VALUE *)1;		return 1;		case V_ASN1_ANY:		typ = OPENSSL_malloc(sizeof(ASN1_TYPE));		if(!typ) return 0;		typ->value.ptr = NULL;		typ->type = -1;		*pval = (ASN1_VALUE *)typ;		break;		default:		*pval = (ASN1_VALUE *)ASN1_STRING_type_new(utype);		break;	}	if(*pval) return 1;	return 0;}void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it){	int utype;	const ASN1_PRIMITIVE_FUNCS *pf;	pf = it->funcs;	if(pf) {		if(pf->prim_clear)			pf->prim_clear(pval, it);		else 			*pval = NULL;		return;	}	if(!it || (it->itype == ASN1_ITYPE_MSTRING)) utype = -1;	else utype = it->utype;	if(utype == V_ASN1_BOOLEAN)		*(ASN1_BOOLEAN *)pval = it->size;	else *pval = NULL;}