1 /* $OpenBSD: p12_utl.c,v 1.16 2018/05/30 15:32:11 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 /* Cheap and nasty Unicode stuff */
66 
67 unsigned char *
68 OPENSSL_asc2uni(const char *asc, int asclen, unsigned char **uni, int *unilen)
69 {
70 	size_t ulen, i;
71 	unsigned char *unitmp;
72 
73 	if (asclen < 0)
74 		ulen = strlen(asc);
75 	else
76 		ulen = (size_t)asclen;
77 	ulen++;
78 	if (ulen == 0) /* unlikely overflow */
79 		return NULL;
80 	if ((unitmp = reallocarray(NULL, ulen, 2)) == NULL)
81 		return NULL;
82 	ulen *= 2;
83 	/* XXX This interface ought to use unsigned types */
84 	if (ulen > INT_MAX) {
85 		free(unitmp);
86 		return NULL;
87 	}
88 	for (i = 0; i < ulen - 2; i += 2) {
89 		unitmp[i] = 0;
90 		unitmp[i + 1] = *asc++;
91 	}
92 	/* Make result double-NUL terminated */
93 	unitmp[ulen - 2] = 0;
94 	unitmp[ulen - 1] = 0;
95 	if (unilen)
96 		*unilen = ulen;
97 	if (uni)
98 		*uni = unitmp;
99 	return unitmp;
100 }
101 
102 char *
103 OPENSSL_uni2asc(const unsigned char *uni, int unilen)
104 {
105 	size_t asclen, u16len, i;
106 	char *asctmp;
107 
108 	if (unilen < 0)
109 		return NULL;
110 
111 	asclen = u16len = (size_t)unilen / 2;
112 	/* If no terminating NUL, allow for one */
113 	if (unilen == 0 || uni[unilen - 1] != '\0')
114 		asclen++;
115 	if ((asctmp = malloc(asclen)) == NULL)
116 		return NULL;
117 	/* Skip first zero byte */
118 	uni++;
119 	for (i = 0; i < u16len; i++) {
120 		asctmp[i] = *uni;
121 		uni += 2;
122 	}
123 	asctmp[asclen - 1] = '\0';
124 	return asctmp;
125 }
126 
127 int
128 i2d_PKCS12_bio(BIO *bp, PKCS12 *p12)
129 {
130 	return ASN1_item_i2d_bio(&PKCS12_it, bp, p12);
131 }
132 
133 int
134 i2d_PKCS12_fp(FILE *fp, PKCS12 *p12)
135 {
136 	return ASN1_item_i2d_fp(&PKCS12_it, fp, p12);
137 }
138 
139 PKCS12 *
140 d2i_PKCS12_bio(BIO *bp, PKCS12 **p12)
141 {
142 	return ASN1_item_d2i_bio(&PKCS12_it, bp, p12);
143 }
144 
145 PKCS12 *
146 d2i_PKCS12_fp(FILE *fp, PKCS12 **p12)
147 {
148 	    return ASN1_item_d2i_fp(&PKCS12_it, fp, p12);
149 }
150 
151 PKCS12_SAFEBAG *
152 PKCS12_x5092certbag(X509 *x509)
153 {
154 	return PKCS12_item_pack_safebag(x509, &X509_it,
155 	    NID_x509Certificate, NID_certBag);
156 }
157 
158 PKCS12_SAFEBAG *
159 PKCS12_x509crl2certbag(X509_CRL *crl)
160 {
161 	return PKCS12_item_pack_safebag(crl, &X509_CRL_it,
162 	    NID_x509Crl, NID_crlBag);
163 }
164 
165 X509 *
166 PKCS12_certbag2x509(PKCS12_SAFEBAG *bag)
167 {
168 	if (OBJ_obj2nid(bag->type) != NID_certBag)
169 		return NULL;
170 	if (OBJ_obj2nid(bag->value.bag->type) != NID_x509Certificate)
171 		return NULL;
172 	return ASN1_item_unpack(bag->value.bag->value.octet,
173 	    &X509_it);
174 }
175 
176 X509_CRL *
177 PKCS12_certbag2x509crl(PKCS12_SAFEBAG *bag)
178 {
179 	if (OBJ_obj2nid(bag->type) != NID_crlBag)
180 		return NULL;
181 	if (OBJ_obj2nid(bag->value.bag->type) != NID_x509Crl)
182 		return NULL;
183 	return ASN1_item_unpack(bag->value.bag->value.octet,
184 	    &X509_CRL_it);
185 }
186