asn1_old.c revision 1.5 
1/* $OpenBSD: asn1_old.c,v 1.5 2023/07/07 19:37:52 beck Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to.  The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 *    notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 *    notice, this list of conditions and the following disclaimer in the
30 *    documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 *    must display the following acknowledgement:
33 *    "This product includes cryptographic software written by
34 *     Eric Young (eay@cryptsoft.com)"
35 *    The word 'cryptographic' can be left out if the rouines from the library
36 *    being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 *    the apps directory (application code) you must include an acknowledgement:
39 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed.  i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <limits.h>
60#include <stdio.h>
61
62#include <openssl/asn1.h>
63#include <openssl/buffer.h>
64#include <openssl/err.h>
65
66#include "asn1_local.h"
67
68#ifndef NO_OLD_ASN1
69
70void *
71ASN1_dup(i2d_of_void *i2d, d2i_of_void *d2i, void *x)
72{
73	unsigned char *b, *p;
74	const unsigned char *p2;
75	int i;
76	char *ret;
77
78	if (x == NULL)
79		return (NULL);
80
81	i = i2d(x, NULL);
82	b = malloc(i + 10);
83	if (b == NULL) {
84		ASN1error(ERR_R_MALLOC_FAILURE);
85		return (NULL);
86	}
87	p = b;
88	i = i2d(x, &p);
89	p2 = b;
90	ret = d2i(NULL, &p2, i);
91	free(b);
92	return (ret);
93}
94
95void *
96ASN1_d2i_fp(void *(*xnew)(void), d2i_of_void *d2i, FILE *in, void **x)
97{
98	BIO *b;
99	void *ret;
100
101	if ((b = BIO_new(BIO_s_file())) == NULL) {
102		ASN1error(ERR_R_BUF_LIB);
103		return (NULL);
104	}
105	BIO_set_fp(b, in, BIO_NOCLOSE);
106	ret = ASN1_d2i_bio(xnew, d2i, b, x);
107	BIO_free(b);
108	return (ret);
109}
110LCRYPTO_ALIAS(ASN1_d2i_fp);
111
112void *
113ASN1_d2i_bio(void *(*xnew)(void), d2i_of_void *d2i, BIO *in, void **x)
114{
115	BUF_MEM *b = NULL;
116	const unsigned char *p;
117	void *ret = NULL;
118	int len;
119
120	len = asn1_d2i_read_bio(in, &b);
121	if (len < 0)
122		goto err;
123
124	p = (unsigned char *)b->data;
125	ret = d2i(x, &p, len);
126
127 err:
128	if (b != NULL)
129		BUF_MEM_free(b);
130	return (ret);
131}
132LCRYPTO_ALIAS(ASN1_d2i_bio);
133
134int
135ASN1_i2d_fp(i2d_of_void *i2d, FILE *out, void *x)
136{
137	BIO *b;
138	int ret;
139
140	if ((b = BIO_new(BIO_s_file())) == NULL) {
141		ASN1error(ERR_R_BUF_LIB);
142		return (0);
143	}
144	BIO_set_fp(b, out, BIO_NOCLOSE);
145	ret = ASN1_i2d_bio(i2d, b, x);
146	BIO_free(b);
147	return (ret);
148}
149LCRYPTO_ALIAS(ASN1_i2d_fp);
150
151int
152ASN1_i2d_bio(i2d_of_void *i2d, BIO *out, unsigned char *x)
153{
154	char *b;
155	unsigned char *p;
156	int i, j = 0, n, ret = 1;
157
158	n = i2d(x, NULL);
159	b = malloc(n);
160	if (b == NULL) {
161		ASN1error(ERR_R_MALLOC_FAILURE);
162		return (0);
163	}
164
165	p = (unsigned char *)b;
166	i2d(x, &p);
167
168	for (;;) {
169		i = BIO_write(out, &(b[j]), n);
170		if (i == n)
171			break;
172		if (i <= 0) {
173			ret = 0;
174			break;
175		}
176		j += i;
177		n -= i;
178	}
179	free(b);
180	return (ret);
181}
182LCRYPTO_ALIAS(ASN1_i2d_bio);
183
184#endif
185