[331] | 1 | /*
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| 2 | * Copyright 1995-2016 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 | #include <openssl/asn1t.h>
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| 14 |
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| 15 | int ASN1_TYPE_set_octetstring(ASN1_TYPE *a, unsigned char *data, int len)
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| 16 | {
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| 17 | ASN1_STRING *os;
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| 18 |
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| 19 | if ((os = ASN1_OCTET_STRING_new()) == NULL)
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| 20 | return (0);
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| 21 | if (!ASN1_OCTET_STRING_set(os, data, len)) {
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| 22 | ASN1_OCTET_STRING_free(os);
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| 23 | return 0;
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| 24 | }
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| 25 | ASN1_TYPE_set(a, V_ASN1_OCTET_STRING, os);
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| 26 | return (1);
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| 27 | }
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| 28 |
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| 29 | /* int max_len: for returned value */
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| 30 | int ASN1_TYPE_get_octetstring(const ASN1_TYPE *a, unsigned char *data, int max_len)
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| 31 | {
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| 32 | int ret, num;
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| 33 | const unsigned char *p;
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| 34 |
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| 35 | if ((a->type != V_ASN1_OCTET_STRING) || (a->value.octet_string == NULL)) {
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| 36 | ASN1err(ASN1_F_ASN1_TYPE_GET_OCTETSTRING, ASN1_R_DATA_IS_WRONG);
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| 37 | return (-1);
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| 38 | }
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| 39 | p = ASN1_STRING_get0_data(a->value.octet_string);
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| 40 | ret = ASN1_STRING_length(a->value.octet_string);
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| 41 | if (ret < max_len)
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| 42 | num = ret;
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| 43 | else
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| 44 | num = max_len;
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| 45 | memcpy(data, p, num);
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| 46 | return (ret);
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| 47 | }
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| 48 |
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| 49 | typedef struct {
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| 50 | long num;
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| 51 | ASN1_OCTET_STRING *oct;
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| 52 | } asn1_int_oct;
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| 53 |
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| 54 | ASN1_SEQUENCE(asn1_int_oct) = {
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| 55 | ASN1_SIMPLE(asn1_int_oct, num, LONG),
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| 56 | ASN1_SIMPLE(asn1_int_oct, oct, ASN1_OCTET_STRING)
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| 57 | } static_ASN1_SEQUENCE_END(asn1_int_oct)
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| 58 |
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| 59 | DECLARE_ASN1_ITEM(asn1_int_oct)
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| 60 |
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| 61 | int ASN1_TYPE_set_int_octetstring(ASN1_TYPE *a, long num, unsigned char *data,
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| 62 | int len)
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| 63 | {
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| 64 | asn1_int_oct atmp;
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| 65 | ASN1_OCTET_STRING oct;
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| 66 |
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| 67 | atmp.num = num;
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| 68 | atmp.oct = &oct;
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| 69 | oct.data = data;
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| 70 | oct.type = V_ASN1_OCTET_STRING;
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| 71 | oct.length = len;
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| 72 | oct.flags = 0;
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| 73 |
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| 74 | if (ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(asn1_int_oct), &atmp, &a))
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| 75 | return 1;
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| 76 | return 0;
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| 77 | }
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| 78 |
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| 79 | /*
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| 80 | * we return the actual length...
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| 81 | */
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| 82 | /* int max_len: for returned value */
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| 83 | int ASN1_TYPE_get_int_octetstring(const ASN1_TYPE *a, long *num,
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| 84 | unsigned char *data, int max_len)
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| 85 | {
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| 86 | asn1_int_oct *atmp = NULL;
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| 87 | int ret = -1, n;
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| 88 |
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| 89 | if ((a->type != V_ASN1_SEQUENCE) || (a->value.sequence == NULL)) {
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| 90 | goto err;
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| 91 | }
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| 92 |
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| 93 | atmp = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(asn1_int_oct), a);
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| 94 |
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| 95 | if (atmp == NULL)
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| 96 | goto err;
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| 97 |
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| 98 | if (num != NULL)
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| 99 | *num = atmp->num;
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| 100 |
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| 101 | ret = ASN1_STRING_length(atmp->oct);
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| 102 | if (max_len > ret)
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| 103 | n = ret;
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| 104 | else
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| 105 | n = max_len;
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| 106 |
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| 107 | if (data != NULL)
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| 108 | memcpy(data, ASN1_STRING_get0_data(atmp->oct), n);
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| 109 | if (ret == -1) {
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| 110 | err:
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| 111 | ASN1err(ASN1_F_ASN1_TYPE_GET_INT_OCTETSTRING, ASN1_R_DATA_IS_WRONG);
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| 112 | }
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| 113 | M_ASN1_free_of(atmp, asn1_int_oct);
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| 114 | return ret;
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| 115 | }
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