1 /* $OpenBSD: p12_utl.c,v 1.19 2022/09/11 17:30:13 tb Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3  * project 1999.
4  */
5 /* ====================================================================
6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * 3. All advertising materials mentioning features or use of this
21  *    software must display the following acknowledgment:
22  *    "This product includes software developed by the OpenSSL Project
23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24  *
25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26  *    endorse or promote products derived from this software without
27  *    prior written permission. For written permission, please contact
28  *    licensing@OpenSSL.org.
29  *
30  * 5. Products derived from this software may not be called "OpenSSL"
31  *    nor may "OpenSSL" appear in their names without prior written
32  *    permission of the OpenSSL Project.
33  *
34  * 6. Redistributions of any form whatsoever must retain the following
35  *    acknowledgment:
36  *    "This product includes software developed by the OpenSSL Project
37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38  *
39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50  * OF THE POSSIBILITY OF SUCH DAMAGE.
51  * ====================================================================
52  *
53  * This product includes cryptographic software written by Eric Young
54  * (eay@cryptsoft.com).  This product includes software written by Tim
55  * Hudson (tjh@cryptsoft.com).
56  *
57  */
58 
59 #include <limits.h>
60 #include <stdio.h>
61 #include <string.h>
62 
63 #include <openssl/pkcs12.h>
64 
65 #include "pkcs12_local.h"
66 
67 /* Cheap and nasty Unicode stuff */
68 
69 unsigned char *
70 OPENSSL_asc2uni(const char *asc, int asclen, unsigned char **uni, int *unilen)
71 {
72 	size_t ulen, i;
73 	unsigned char *unitmp;
74 
75 	if (asclen < 0)
76 		ulen = strlen(asc);
77 	else
78 		ulen = (size_t)asclen;
79 	ulen++;
80 	if (ulen == 0) /* unlikely overflow */
81 		return NULL;
82 	if ((unitmp = reallocarray(NULL, ulen, 2)) == NULL)
83 		return NULL;
84 	ulen *= 2;
85 	/* XXX This interface ought to use unsigned types */
86 	if (ulen > INT_MAX) {
87 		free(unitmp);
88 		return NULL;
89 	}
90 	for (i = 0; i < ulen - 2; i += 2) {
91 		unitmp[i] = 0;
92 		unitmp[i + 1] = *asc++;
93 	}
94 	/* Make result double-NUL terminated */
95 	unitmp[ulen - 2] = 0;
96 	unitmp[ulen - 1] = 0;
97 	if (unilen)
98 		*unilen = ulen;
99 	if (uni)
100 		*uni = unitmp;
101 	return unitmp;
102 }
103 
104 char *
105 OPENSSL_uni2asc(const unsigned char *uni, int unilen)
106 {
107 	size_t asclen, u16len, i;
108 	char *asctmp;
109 
110 	if (unilen < 0)
111 		return NULL;
112 
113 	asclen = u16len = (size_t)unilen / 2;
114 	/* If no terminating NUL, allow for one */
115 	if (unilen == 0 || uni[unilen - 1] != '\0')
116 		asclen++;
117 	if ((asctmp = malloc(asclen)) == NULL)
118 		return NULL;
119 	/* Skip first zero byte */
120 	uni++;
121 	for (i = 0; i < u16len; i++) {
122 		asctmp[i] = *uni;
123 		uni += 2;
124 	}
125 	asctmp[asclen - 1] = '\0';
126 	return asctmp;
127 }
128 
129 int
130 i2d_PKCS12_bio(BIO *bp, PKCS12 *p12)
131 {
132 	return ASN1_item_i2d_bio(&PKCS12_it, bp, p12);
133 }
134 
135 int
136 i2d_PKCS12_fp(FILE *fp, PKCS12 *p12)
137 {
138 	return ASN1_item_i2d_fp(&PKCS12_it, fp, p12);
139 }
140 
141 PKCS12 *
142 d2i_PKCS12_bio(BIO *bp, PKCS12 **p12)
143 {
144 	return ASN1_item_d2i_bio(&PKCS12_it, bp, p12);
145 }
146 
147 PKCS12 *
148 d2i_PKCS12_fp(FILE *fp, PKCS12 **p12)
149 {
150 	    return ASN1_item_d2i_fp(&PKCS12_it, fp, p12);
151 }
152