2 * Copyright 1999-2023 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include <openssl/pkcs12.h>
13 #include "p12_local.h"
14 #include "crypto/pkcs7/pk7_local.h"
16 /* Cheap and nasty Unicode stuff */
18 unsigned char *OPENSSL_asc2uni(const char *asc, int asclen,
19 unsigned char **uni, int *unilen)
22 unsigned char *unitmp;
28 ulen = asclen * 2 + 2;
29 if ((unitmp = OPENSSL_malloc(ulen)) == NULL)
31 for (i = 0; i < ulen - 2; i += 2) {
33 unitmp[i + 1] = asc[i >> 1];
35 /* Make result double null terminated */
45 char *OPENSSL_uni2asc(const unsigned char *uni, int unilen)
50 /* string must contain an even number of bytes */
56 /* If no terminating zero allow for one */
57 if (!unilen || uni[unilen - 1])
60 if ((asctmp = OPENSSL_malloc(asclen)) == NULL)
62 for (i = 0; i < unilen; i += 2)
63 asctmp[i >> 1] = uni[i];
64 asctmp[asclen - 1] = 0;
69 * OPENSSL_{utf82uni|uni2utf8} perform conversion between UTF-8 and
70 * PKCS#12 BMPString format, which is specified as big-endian UTF-16.
71 * One should keep in mind that even though BMPString is passed as
72 * unsigned char *, it's not the kind of string you can exercise e.g.
73 * strlen on. Caller also has to keep in mind that its length is
74 * expressed not in number of UTF-16 characters, but in number of
75 * bytes the string occupies, and treat it, the length, accordingly.
77 unsigned char *OPENSSL_utf82uni(const char *asc, int asclen,
78 unsigned char **uni, int *unilen)
81 unsigned char *unitmp, *ret;
82 unsigned long utf32chr = 0;
87 for (ulen = 0, i = 0; i < asclen; i += j) {
88 j = UTF8_getc((const unsigned char *)asc+i, asclen-i, &utf32chr);
91 * Following condition is somewhat opportunistic is sense that
92 * decoding failure is used as *indirect* indication that input
93 * string might in fact be extended ASCII/ANSI/ISO-8859-X. The
94 * fallback is taken in hope that it would allow to process
95 * files created with previous OpenSSL version, which used the
96 * naive OPENSSL_asc2uni all along. It might be worth noting
97 * that probability of false positive depends on language. In
98 * cases covered by ISO Latin 1 probability is very low, because
99 * any printable non-ASCII alphabet letter followed by another
100 * or any ASCII character will trigger failure and fallback.
101 * In other cases situation can be intensified by the fact that
102 * English letters are not part of alternative keyboard layout,
103 * but even then there should be plenty of pairs that trigger
104 * decoding failure...
107 return OPENSSL_asc2uni(asc, asclen, uni, unilen);
109 if (utf32chr > 0x10FFFF) /* UTF-16 cap */
112 if (utf32chr >= 0x10000) /* pair of UTF-16 characters */
114 else /* or just one */
118 ulen += 2; /* for trailing UTF16 zero */
120 if ((ret = OPENSSL_malloc(ulen)) == NULL)
122 /* re-run the loop writing down UTF-16 characters in big-endian order */
123 for (unitmp = ret, i = 0; i < asclen; i += j) {
124 j = UTF8_getc((const unsigned char *)asc+i, asclen-i, &utf32chr);
125 if (utf32chr >= 0x10000) { /* pair if UTF-16 characters */
129 hi = 0xD800 + (utf32chr>>10);
130 lo = 0xDC00 + (utf32chr&0x3ff);
131 *unitmp++ = (unsigned char)(hi>>8);
132 *unitmp++ = (unsigned char)(hi);
133 *unitmp++ = (unsigned char)(lo>>8);
134 *unitmp++ = (unsigned char)(lo);
135 } else { /* or just one */
136 *unitmp++ = (unsigned char)(utf32chr>>8);
137 *unitmp++ = (unsigned char)(utf32chr);
140 /* Make result double null terminated */
150 static int bmp_to_utf8(char *str, const unsigned char *utf16, int len)
152 unsigned long utf32chr;
154 if (len == 0) return 0;
156 if (len < 2) return -1;
158 /* pull UTF-16 character in big-endian order */
159 utf32chr = (utf16[0]<<8) | utf16[1];
161 if (utf32chr >= 0xD800 && utf32chr < 0xE000) { /* two chars */
164 if (len < 4) return -1;
168 lo = (utf16[2]<<8) | utf16[3];
169 if (lo < 0xDC00 || lo >= 0xE000) return -1;
170 utf32chr |= lo-0xDC00;
174 return UTF8_putc((unsigned char *)str, len > 4 ? 4 : len, utf32chr);
177 char *OPENSSL_uni2utf8(const unsigned char *uni, int unilen)
182 /* string must contain an even number of bytes */
186 for (asclen = 0, i = 0; i < unilen; ) {
187 j = bmp_to_utf8(NULL, uni+i, unilen-i);
189 * falling back to OPENSSL_uni2asc makes lesser sense [than
190 * falling back to OPENSSL_asc2uni in OPENSSL_utf82uni above],
191 * it's done rather to maintain symmetry...
193 if (j < 0) return OPENSSL_uni2asc(uni, unilen);
199 /* If no terminating zero allow for one */
200 if (!unilen || (uni[unilen-2]||uni[unilen - 1]))
203 if ((asctmp = OPENSSL_malloc(asclen)) == NULL)
206 /* re-run the loop emitting UTF-8 string */
207 for (asclen = 0, i = 0; i < unilen; ) {
208 j = bmp_to_utf8(asctmp+asclen, uni+i, unilen-i);
214 /* If no terminating zero write one */
215 if (!unilen || (uni[unilen-2]||uni[unilen - 1]))
216 asctmp[asclen] = '\0';
221 int i2d_PKCS12_bio(BIO *bp, const PKCS12 *p12)
223 return ASN1_item_i2d_bio(ASN1_ITEM_rptr(PKCS12), bp, p12);
226 #ifndef OPENSSL_NO_STDIO
227 int i2d_PKCS12_fp(FILE *fp, const PKCS12 *p12)
229 return ASN1_item_i2d_fp(ASN1_ITEM_rptr(PKCS12), fp, p12);
233 PKCS12 *d2i_PKCS12_bio(BIO *bp, PKCS12 **p12)
235 OSSL_LIB_CTX *libctx = NULL;
236 const char *propq = NULL;
237 const PKCS7_CTX *p7ctx = NULL;
240 p7ctx = ossl_pkcs12_get0_pkcs7ctx(*p12);
242 libctx = ossl_pkcs7_ctx_get0_libctx(p7ctx);
243 propq = ossl_pkcs7_ctx_get0_propq(p7ctx);
246 return ASN1_item_d2i_bio_ex(ASN1_ITEM_rptr(PKCS12), bp, p12, libctx, propq);
249 #ifndef OPENSSL_NO_STDIO
250 PKCS12 *d2i_PKCS12_fp(FILE *fp, PKCS12 **p12)
252 OSSL_LIB_CTX *libctx = NULL;
253 const char *propq = NULL;
254 const PKCS7_CTX *p7ctx = NULL;
257 p7ctx = ossl_pkcs12_get0_pkcs7ctx(*p12);
259 libctx = ossl_pkcs7_ctx_get0_libctx(p7ctx);
260 propq = ossl_pkcs7_ctx_get0_propq(p7ctx);
263 return ASN1_item_d2i_fp_ex(ASN1_ITEM_rptr(PKCS12), fp, p12, libctx, propq);