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https://github.com/openssl/openssl.git
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63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
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* Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/asn1.h>
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/* ASN1 packing and unpacking functions */
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ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_STRING **oct)
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{
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ASN1_STRING *octmp;
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if (oct == NULL || *oct == NULL) {
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if ((octmp = ASN1_STRING_new()) == NULL) {
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ASN1err(ASN1_F_ASN1_ITEM_PACK, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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} else {
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octmp = *oct;
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}
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OPENSSL_free(octmp->data);
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octmp->data = NULL;
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if ((octmp->length = ASN1_item_i2d(obj, &octmp->data, it)) == 0) {
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ASN1err(ASN1_F_ASN1_ITEM_PACK, ASN1_R_ENCODE_ERROR);
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goto err;
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}
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if (octmp->data == NULL) {
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ASN1err(ASN1_F_ASN1_ITEM_PACK, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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if (oct != NULL && *oct == NULL)
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*oct = octmp;
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return octmp;
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err:
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if (oct == NULL || *oct == NULL)
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ASN1_STRING_free(octmp);
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return NULL;
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}
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/* Extract an ASN1 object from an ASN1_STRING */
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void *ASN1_item_unpack(const ASN1_STRING *oct, const ASN1_ITEM *it)
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{
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const unsigned char *p;
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void *ret;
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p = oct->data;
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if ((ret = ASN1_item_d2i(NULL, &p, oct->length, it)) == NULL)
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ASN1err(ASN1_F_ASN1_ITEM_UNPACK, ASN1_R_DECODE_ERROR);
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return ret;
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}
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