GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/asn1/tasn_fre.c Lines: 92 100 92.0 %
Date: 2017-11-07 Branches: 63 80 78.8 %

Line Branch Exec Source
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/* $OpenBSD: tasn_fre.c,v 1.15 2016/12/30 16:04:34 jsing Exp $ */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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 * project 2000.
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 */
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/* ====================================================================
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 * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 *
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in
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 *    the documentation and/or other materials provided with the
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 *    distribution.
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 *
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 * 3. All advertising materials mentioning features or use of this
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 *    software must display the following acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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 *
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 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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 *    endorse or promote products derived from this software without
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 *    prior written permission. For written permission, please contact
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 *    licensing@OpenSSL.org.
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 *
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 * 5. Products derived from this software may not be called "OpenSSL"
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 *    nor may "OpenSSL" appear in their names without prior written
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 *    permission of the OpenSSL Project.
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 *
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 * 6. Redistributions of any form whatsoever must retain the following
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 *    acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * OF THE POSSIBILITY OF SUCH DAMAGE.
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 * ====================================================================
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 *
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 * This product includes cryptographic software written by Eric Young
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 * (eay@cryptsoft.com).  This product includes software written by Tim
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 * Hudson (tjh@cryptsoft.com).
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 *
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 */
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#include <stddef.h>
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#include <openssl/asn1.h>
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#include <openssl/asn1t.h>
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#include <openssl/objects.h>
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static void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it,
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    int combine);
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/* Free up an ASN1 structure */
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void
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ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it)
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{
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784610
	asn1_item_combine_free(&val, it, 0);
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784610
}
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void
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ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
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{
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920
	asn1_item_combine_free(pval, it, 0);
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460
}
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static void
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asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine)
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{
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	const ASN1_TEMPLATE *tt = NULL, *seqtt;
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	const ASN1_EXTERN_FUNCS *ef;
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3828948
	const ASN1_AUX *aux = it->funcs;
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	ASN1_aux_cb *asn1_cb = NULL;
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	int i;
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91

3828948
	if (pval == NULL || *pval == NULL)
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537821
		return;
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94

1485808
	if (aux != NULL && aux->asn1_cb != NULL)
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61997
		asn1_cb = aux->asn1_cb;
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2733963
	switch (it->itype) {
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	case ASN1_ITYPE_PRIMITIVE:
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630969
		if (it->templates)
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20
			ASN1_template_free(pval, it->templates);
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		else
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630949
			ASN1_primitive_free(pval, it);
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		break;
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	case ASN1_ITYPE_MSTRING:
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275570
		ASN1_primitive_free(pval, it);
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275570
		break;
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	case ASN1_ITYPE_CHOICE:
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1612
		if (asn1_cb) {
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			i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL);
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			if (i == 2)
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				return;
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		}
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1612
		i = asn1_get_choice_selector(pval, it);
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3224
		if ((i >= 0) && (i < it->tcount)) {
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			ASN1_VALUE **pchval;
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1612
			tt = it->templates + i;
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1612
			pchval = asn1_get_field_ptr(pval, tt);
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1612
			ASN1_template_free(pchval, tt);
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1612
		}
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1612
		if (asn1_cb)
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			asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL);
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1612
		if (!combine) {
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1508
			free(*pval);
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1508
			*pval = NULL;
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1508
		}
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		break;
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	case ASN1_ITYPE_EXTERN:
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31566
		ef = it->funcs;
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63132
		if (ef && ef->asn1_ex_free)
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31566
			ef->asn1_ex_free(pval, it);
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		break;
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	case ASN1_ITYPE_NDEF_SEQUENCE:
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	case ASN1_ITYPE_SEQUENCE:
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436936
		if (asn1_do_lock(pval, -1, it) > 0)
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19343
			return;
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417593
		if (asn1_cb) {
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31780
			i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL);
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31780
			if (i == 2)
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				return;
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		}
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417593
		asn1_enc_free(pval, it);
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		/* If we free up as normal we will invalidate any
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		 * ANY DEFINED BY field and we wont be able to
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		 * determine the type of the field it defines. So
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		 * free up in reverse order.
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		 */
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417593
		tt = it->templates + it->tcount - 1;
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2901414
		for (i = 0; i < it->tcount; tt--, i++) {
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			ASN1_VALUE **pseqval;
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1033114
			seqtt = asn1_do_adb(pval, tt, 0);
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1033114
			if (!seqtt)
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				continue;
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1033114
			pseqval = asn1_get_field_ptr(pval, seqtt);
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1033114
			ASN1_template_free(pseqval, seqtt);
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1033114
		}
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417593
		if (asn1_cb)
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31780
			asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL);
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417593
		if (!combine) {
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417593
			free(*pval);
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417593
			*pval = NULL;
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417593
		}
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		break;
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	}
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3271784
}
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170
void
171
ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
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{
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	int i;
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2203108
	if (tt->flags & ASN1_TFLG_SK_MASK) {
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19512
		STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
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133748
		for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
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47362
			ASN1_VALUE *vtmp;
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47362
			vtmp = sk_ASN1_VALUE_value(sk, i);
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47362
			asn1_item_combine_free(&vtmp, tt->item,
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			    0);
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47362
		}
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19512
		sk_ASN1_VALUE_free(sk);
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19512
		*pval = NULL;
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19512
	} else
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2164084
		asn1_item_combine_free(pval, tt->item,
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1082042
		    tt->flags & ASN1_TFLG_COMBINE);
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1101554
}
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189
void
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ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
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{
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	int utype;
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1905714
	if (it) {
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		const ASN1_PRIMITIVE_FUNCS *pf;
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906519
		pf = it->funcs;
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917393
		if (pf && pf->prim_free) {
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10874
			pf->prim_free(pval, it);
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10874
			return;
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		}
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895645
	}
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	/* Special case: if 'it' is NULL free contents of ASN1_TYPE */
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941983
	if (!it) {
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46338
		ASN1_TYPE *typ = (ASN1_TYPE *)*pval;
204
46338
		utype = typ->type;
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46338
		pval = &typ->value.asn1_value;
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46338
		if (!*pval)
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43764
			return;
208

898219
	} else if (it->itype == ASN1_ITYPE_MSTRING) {
209
		utype = -1;
210
275570
		if (!*pval)
211
			return;
212
	} else {
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620075
		utype = it->utype;
214

1169470
		if ((utype != V_ASN1_BOOLEAN) && !*pval)
215
			return;
216
	}
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218

1725746
	switch (utype) {
219
	case V_ASN1_OBJECT:
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345386
		ASN1_OBJECT_free((ASN1_OBJECT *)*pval);
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345386
		break;
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223
	case V_ASN1_BOOLEAN:
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70680
		if (it)
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70680
			*(ASN1_BOOLEAN *)pval = it->size;
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		else
227
			*(ASN1_BOOLEAN *)pval = -1;
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70680
		return;
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230
	case V_ASN1_NULL:
231
		break;
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233
	case V_ASN1_ANY:
234
46338
		ASN1_primitive_free(pval, NULL);
235
46338
		free(*pval);
236
46338
		break;
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238
	default:
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435803
		ASN1_STRING_free((ASN1_STRING *)*pval);
240
435803
		break;
241
	}
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827539
	*pval = NULL;
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1780396
}