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/*
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c4476c |
* Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.
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c4476c |
*
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c4476c |
* Licensed under the OpenSSL license (the "License"). You may not use
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c4476c |
* this file except in compliance with the License. You can obtain a copy
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c4476c |
* in the file LICENSE in the source distribution or at
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c4476c |
* https://www.openssl.org/source/license.html
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*/
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c4476c |
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#include <stddef.h>
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c4476c |
#include <openssl/asn1.h>
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#include <openssl/objects.h>
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#include <openssl/err.h>
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#include <openssl/asn1t.h>
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#include <string.h>
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#include "asn1_local.h"
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static int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
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c4476c |
int embed);
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static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
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c4476c |
int embed);
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static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
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static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
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static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
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static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
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ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
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{
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c4476c |
ASN1_VALUE *ret = NULL;
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c4476c |
if (ASN1_item_ex_new(&ret, it) > 0)
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return ret;
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c4476c |
return NULL;
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}
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c4476c |
/* Allocate an ASN1 structure */
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int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
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{
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return asn1_item_embed_new(pval, it, 0);
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}
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int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int embed)
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{
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const ASN1_TEMPLATE *tt = NULL;
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const ASN1_EXTERN_FUNCS *ef;
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const ASN1_AUX *aux = it->funcs;
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ASN1_aux_cb *asn1_cb;
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ASN1_VALUE **pseqval;
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int i;
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if (aux && aux->asn1_cb)
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asn1_cb = aux->asn1_cb;
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else
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asn1_cb = 0;
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#ifndef OPENSSL_NO_CRYPTO_MDEBUG
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OPENSSL_mem_debug_push(it->sname ? it->sname : "asn1_item_embed_new");
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#endif
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switch (it->itype) {
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case ASN1_ITYPE_EXTERN:
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ef = it->funcs;
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c4476c |
if (ef && ef->asn1_ex_new) {
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c4476c |
if (!ef->asn1_ex_new(pval, it))
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goto memerr;
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c4476c |
}
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break;
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case ASN1_ITYPE_PRIMITIVE:
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if (it->templates) {
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if (!asn1_template_new(pval, it->templates))
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c4476c |
goto memerr;
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c4476c |
} else if (!asn1_primitive_new(pval, it, embed))
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goto memerr;
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c4476c |
break;
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c4476c |
case ASN1_ITYPE_MSTRING:
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c4476c |
if (!asn1_primitive_new(pval, it, embed))
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goto memerr;
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c4476c |
break;
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case ASN1_ITYPE_CHOICE:
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if (asn1_cb) {
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i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
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c4476c |
if (!i)
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goto auxerr;
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c4476c |
if (i == 2) {
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c4476c |
#ifndef OPENSSL_NO_CRYPTO_MDEBUG
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c4476c |
OPENSSL_mem_debug_pop();
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#endif
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return 1;
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}
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}
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if (embed) {
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memset(*pval, 0, it->size);
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} else {
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*pval = OPENSSL_zalloc(it->size);
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if (*pval == NULL)
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goto memerr;
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}
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asn1_set_choice_selector(pval, -1, it);
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if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
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goto auxerr2;
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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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if (asn1_cb) {
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c4476c |
i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
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if (!i)
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goto auxerr;
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if (i == 2) {
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c4476c |
#ifndef OPENSSL_NO_CRYPTO_MDEBUG
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OPENSSL_mem_debug_pop();
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#endif
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return 1;
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}
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}
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if (embed) {
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memset(*pval, 0, it->size);
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} else {
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*pval = OPENSSL_zalloc(it->size);
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if (*pval == NULL)
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goto memerr;
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}
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/* 0 : init. lock */
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if (asn1_do_lock(pval, 0, it) < 0) {
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if (!embed) {
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OPENSSL_free(*pval);
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*pval = NULL;
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}
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goto memerr;
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}
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asn1_enc_init(pval, it);
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for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
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c4476c |
pseqval = asn1_get_field_ptr(pval, tt);
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c4476c |
if (!asn1_template_new(pseqval, tt))
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c4476c |
goto memerr2;
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c4476c |
}
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c4476c |
if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
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c4476c |
goto auxerr2;
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c4476c |
break;
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c4476c |
}
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c4476c |
#ifndef OPENSSL_NO_CRYPTO_MDEBUG
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c4476c |
OPENSSL_mem_debug_pop();
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c4476c |
#endif
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c4476c |
return 1;
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c4476c |
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c4476c |
memerr2:
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c4476c |
asn1_item_embed_free(pval, it, embed);
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c4476c |
memerr:
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c4476c |
ASN1err(ASN1_F_ASN1_ITEM_EMBED_NEW, ERR_R_MALLOC_FAILURE);
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c4476c |
#ifndef OPENSSL_NO_CRYPTO_MDEBUG
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c4476c |
OPENSSL_mem_debug_pop();
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c4476c |
#endif
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c4476c |
return 0;
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c4476c |
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c4476c |
auxerr2:
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c4476c |
asn1_item_embed_free(pval, it, embed);
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c4476c |
auxerr:
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c4476c |
ASN1err(ASN1_F_ASN1_ITEM_EMBED_NEW, ASN1_R_AUX_ERROR);
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|
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c4476c |
#ifndef OPENSSL_NO_CRYPTO_MDEBUG
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Packit |
c4476c |
OPENSSL_mem_debug_pop();
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|
Packit |
c4476c |
#endif
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|
Packit |
c4476c |
return 0;
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|
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c4476c |
|
|
Packit |
c4476c |
}
|
|
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c4476c |
|
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c4476c |
static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
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c4476c |
{
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|
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c4476c |
const ASN1_EXTERN_FUNCS *ef;
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Packit |
c4476c |
|
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Packit |
c4476c |
switch (it->itype) {
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Packit |
c4476c |
|
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Packit |
c4476c |
case ASN1_ITYPE_EXTERN:
|
|
Packit |
c4476c |
ef = it->funcs;
|
|
Packit |
c4476c |
if (ef && ef->asn1_ex_clear)
|
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Packit |
c4476c |
ef->asn1_ex_clear(pval, it);
|
|
Packit |
c4476c |
else
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Packit |
c4476c |
*pval = NULL;
|
|
Packit |
c4476c |
break;
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Packit |
c4476c |
|
|
Packit |
c4476c |
case ASN1_ITYPE_PRIMITIVE:
|
|
Packit |
c4476c |
if (it->templates)
|
|
Packit |
c4476c |
asn1_template_clear(pval, it->templates);
|
|
Packit |
c4476c |
else
|
|
Packit |
c4476c |
asn1_primitive_clear(pval, it);
|
|
Packit |
c4476c |
break;
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
case ASN1_ITYPE_MSTRING:
|
|
Packit |
c4476c |
asn1_primitive_clear(pval, it);
|
|
Packit |
c4476c |
break;
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|
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c4476c |
|
|
Packit |
c4476c |
case ASN1_ITYPE_CHOICE:
|
|
Packit |
c4476c |
case ASN1_ITYPE_SEQUENCE:
|
|
Packit |
c4476c |
case ASN1_ITYPE_NDEF_SEQUENCE:
|
|
Packit |
c4476c |
*pval = NULL;
|
|
Packit |
c4476c |
break;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
|
|
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static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
|
|
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c4476c |
{
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|
Packit |
c4476c |
const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
|
|
Packit |
c4476c |
int embed = tt->flags & ASN1_TFLG_EMBED;
|
|
Packit |
c4476c |
ASN1_VALUE *tval;
|
|
Packit |
c4476c |
int ret;
|
|
Packit |
c4476c |
if (embed) {
|
|
Packit |
c4476c |
tval = (ASN1_VALUE *)pval;
|
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Packit |
c4476c |
pval = &tval;
|
|
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c4476c |
}
|
|
Packit |
c4476c |
if (tt->flags & ASN1_TFLG_OPTIONAL) {
|
|
Packit |
c4476c |
asn1_template_clear(pval, tt);
|
|
Packit |
c4476c |
return 1;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
/* If ANY DEFINED BY nothing to do */
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
if (tt->flags & ASN1_TFLG_ADB_MASK) {
|
|
Packit |
c4476c |
*pval = NULL;
|
|
Packit |
c4476c |
return 1;
|
|
Packit |
c4476c |
}
|
|
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c4476c |
#ifndef OPENSSL_NO_CRYPTO_MDEBUG
|
|
Packit |
c4476c |
OPENSSL_mem_debug_push(tt->field_name
|
|
Packit |
c4476c |
? tt->field_name : "asn1_template_new");
|
|
Packit |
c4476c |
#endif
|
|
Packit |
c4476c |
/* If SET OF or SEQUENCE OF, its a STACK */
|
|
Packit |
c4476c |
if (tt->flags & ASN1_TFLG_SK_MASK) {
|
|
Packit |
c4476c |
STACK_OF(ASN1_VALUE) *skval;
|
|
Packit |
c4476c |
skval = sk_ASN1_VALUE_new_null();
|
|
Packit |
c4476c |
if (!skval) {
|
|
Packit |
c4476c |
ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE);
|
|
Packit |
c4476c |
ret = 0;
|
|
Packit |
c4476c |
goto done;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
*pval = (ASN1_VALUE *)skval;
|
|
Packit |
c4476c |
ret = 1;
|
|
Packit |
c4476c |
goto done;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
/* Otherwise pass it back to the item routine */
|
|
Packit |
c4476c |
ret = asn1_item_embed_new(pval, it, embed);
|
|
Packit |
c4476c |
done:
|
|
Packit |
c4476c |
#ifndef OPENSSL_NO_CRYPTO_MDEBUG
|
|
Packit |
c4476c |
OPENSSL_mem_debug_pop();
|
|
Packit |
c4476c |
#endif
|
|
Packit |
c4476c |
return ret;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
|
|
Packit |
c4476c |
{
|
|
Packit |
c4476c |
/* If ADB or STACK just NULL the field */
|
|
Packit |
c4476c |
if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK))
|
|
Packit |
c4476c |
*pval = NULL;
|
|
Packit |
c4476c |
else
|
|
Packit |
c4476c |
asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
/*
|
|
Packit |
c4476c |
* NB: could probably combine most of the real XXX_new() behaviour and junk
|
|
Packit |
c4476c |
* all the old functions.
|
|
Packit |
c4476c |
*/
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
|
|
Packit |
c4476c |
int embed)
|
|
Packit |
c4476c |
{
|
|
Packit |
c4476c |
ASN1_TYPE *typ;
|
|
Packit |
c4476c |
ASN1_STRING *str;
|
|
Packit |
c4476c |
int utype;
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
if (!it)
|
|
Packit |
c4476c |
return 0;
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
if (it->funcs) {
|
|
Packit |
c4476c |
const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
|
|
Packit |
c4476c |
if (embed) {
|
|
Packit |
c4476c |
if (pf->prim_clear) {
|
|
Packit |
c4476c |
pf->prim_clear(pval, it);
|
|
Packit |
c4476c |
return 1;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
} else if (pf->prim_new) {
|
|
Packit |
c4476c |
return pf->prim_new(pval, it);
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
if (it->itype == ASN1_ITYPE_MSTRING)
|
|
Packit |
c4476c |
utype = -1;
|
|
Packit |
c4476c |
else
|
|
Packit |
c4476c |
utype = it->utype;
|
|
Packit |
c4476c |
switch (utype) {
|
|
Packit |
c4476c |
case V_ASN1_OBJECT:
|
|
Packit |
c4476c |
*pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
|
|
Packit |
c4476c |
return 1;
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
case V_ASN1_BOOLEAN:
|
|
Packit |
c4476c |
*(ASN1_BOOLEAN *)pval = it->size;
|
|
Packit |
c4476c |
return 1;
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
case V_ASN1_NULL:
|
|
Packit |
c4476c |
*pval = (ASN1_VALUE *)1;
|
|
Packit |
c4476c |
return 1;
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
case V_ASN1_ANY:
|
|
Packit |
c4476c |
if ((typ = OPENSSL_malloc(sizeof(*typ))) == NULL) {
|
|
Packit |
c4476c |
ASN1err(ASN1_F_ASN1_PRIMITIVE_NEW, ERR_R_MALLOC_FAILURE);
|
|
Packit |
c4476c |
return 0;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
typ->value.ptr = NULL;
|
|
Packit |
c4476c |
typ->type = -1;
|
|
Packit |
c4476c |
*pval = (ASN1_VALUE *)typ;
|
|
Packit |
c4476c |
break;
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
default:
|
|
Packit |
c4476c |
if (embed) {
|
|
Packit |
c4476c |
str = *(ASN1_STRING **)pval;
|
|
Packit |
c4476c |
memset(str, 0, sizeof(*str));
|
|
Packit |
c4476c |
str->type = utype;
|
|
Packit |
c4476c |
str->flags = ASN1_STRING_FLAG_EMBED;
|
|
Packit |
c4476c |
} else {
|
|
Packit |
c4476c |
str = ASN1_STRING_type_new(utype);
|
|
Packit |
c4476c |
*pval = (ASN1_VALUE *)str;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
if (it->itype == ASN1_ITYPE_MSTRING && str)
|
|
Packit |
c4476c |
str->flags |= ASN1_STRING_FLAG_MSTRING;
|
|
Packit |
c4476c |
break;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
if (*pval)
|
|
Packit |
c4476c |
return 1;
|
|
Packit |
c4476c |
return 0;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
|
|
Packit |
c4476c |
{
|
|
Packit |
c4476c |
int utype;
|
|
Packit |
c4476c |
if (it && it->funcs) {
|
|
Packit |
c4476c |
const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
|
|
Packit |
c4476c |
if (pf->prim_clear)
|
|
Packit |
c4476c |
pf->prim_clear(pval, it);
|
|
Packit |
c4476c |
else
|
|
Packit |
c4476c |
*pval = NULL;
|
|
Packit |
c4476c |
return;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
if (!it || (it->itype == ASN1_ITYPE_MSTRING))
|
|
Packit |
c4476c |
utype = -1;
|
|
Packit |
c4476c |
else
|
|
Packit |
c4476c |
utype = it->utype;
|
|
Packit |
c4476c |
if (utype == V_ASN1_BOOLEAN)
|
|
Packit |
c4476c |
*(ASN1_BOOLEAN *)pval = it->size;
|
|
Packit |
c4476c |
else
|
|
Packit |
c4476c |
*pval = NULL;
|
|
Packit |
c4476c |
}
|