[331] | 1 | /*
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| 2 | * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include "internal/cryptlib.h"
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| 12 | #include <openssl/asn1.h>
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| 13 |
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| 14 | /* ASN1 packing and unpacking functions */
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| 15 |
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| 16 | ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_STRING **oct)
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| 17 | {
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| 18 | ASN1_STRING *octmp;
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| 19 |
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| 20 | if (oct == NULL || *oct == NULL) {
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| 21 | if ((octmp = ASN1_STRING_new()) == NULL) {
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| 22 | ASN1err(ASN1_F_ASN1_ITEM_PACK, ERR_R_MALLOC_FAILURE);
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| 23 | return NULL;
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| 24 | }
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| 25 | } else {
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| 26 | octmp = *oct;
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| 27 | }
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| 28 |
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| 29 | OPENSSL_free(octmp->data);
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| 30 | octmp->data = NULL;
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| 31 |
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| 32 | if ((octmp->length = ASN1_item_i2d(obj, &octmp->data, it)) == 0) {
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| 33 | ASN1err(ASN1_F_ASN1_ITEM_PACK, ASN1_R_ENCODE_ERROR);
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| 34 | goto err;
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| 35 | }
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| 36 | if (octmp->data == NULL) {
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| 37 | ASN1err(ASN1_F_ASN1_ITEM_PACK, ERR_R_MALLOC_FAILURE);
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| 38 | goto err;
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| 39 | }
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| 40 |
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| 41 | if (oct != NULL && *oct == NULL)
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| 42 | *oct = octmp;
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| 43 |
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| 44 | return octmp;
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| 45 | err:
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| 46 | if (oct == NULL || *oct == NULL)
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| 47 | ASN1_STRING_free(octmp);
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| 48 | return NULL;
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| 49 | }
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| 50 |
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| 51 | /* Extract an ASN1 object from an ASN1_STRING */
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| 52 |
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| 53 | void *ASN1_item_unpack(const ASN1_STRING *oct, const ASN1_ITEM *it)
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| 54 | {
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| 55 | const unsigned char *p;
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| 56 | void *ret;
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| 57 |
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| 58 | p = oct->data;
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| 59 | if ((ret = ASN1_item_d2i(NULL, &p, oct->length, it)) == NULL)
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| 60 | ASN1err(ASN1_F_ASN1_ITEM_UNPACK, ASN1_R_DECODE_ERROR);
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| 61 | return ret;
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| 62 | }
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