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-rw-r--r--src/lib/libcrypto/asn1/a_utf8.c199
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diff --git a/src/lib/libcrypto/asn1/a_utf8.c b/src/lib/libcrypto/asn1/a_utf8.c
deleted file mode 100644
index 51ab1bdb28..0000000000
--- a/src/lib/libcrypto/asn1/a_utf8.c
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1/* $OpenBSD: a_utf8.c,v 1.9 2022/11/26 16:08:50 tb 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 <stdio.h>
60
61#include <openssl/asn1.h>
62
63#include "asn1_local.h"
64
65/* UTF8 utilities */
66
67/*
68 * This parses a UTF8 string one character at a time. It is passed a pointer
69 * to the string and the length of the string. It sets 'value' to the value of
70 * the current character. It returns the number of characters read or a
71 * negative error code:
72 * -1 = string too short
73 * -2 = illegal character
74 * -3 = subsequent characters not of the form 10xxxxxx
75 * -4 = character encoded incorrectly (not minimal length).
76 */
77
78int
79UTF8_getc(const unsigned char *str, int len, unsigned long *val)
80{
81 const unsigned char *p;
82 unsigned long value;
83 int ret;
84 if (len <= 0)
85 return 0;
86 p = str;
87
88 /* Check syntax and work out the encoded value (if correct) */
89 if ((*p & 0x80) == 0) {
90 value = *p++ & 0x7f;
91 ret = 1;
92 } else if ((*p & 0xe0) == 0xc0) {
93 if (*p < 0xc2)
94 return -2;
95 if (len < 2)
96 return -1;
97 if ((p[1] & 0xc0) != 0x80)
98 return -3;
99 value = (*p++ & 0x1f) << 6;
100 value |= *p++ & 0x3f;
101 if (value < 0x80)
102 return -4;
103 ret = 2;
104 } else if ((*p & 0xf0) == 0xe0) {
105 if (len < 3)
106 return -1;
107 if (((p[1] & 0xc0) != 0x80) ||
108 ((p[2] & 0xc0) != 0x80))
109 return -3;
110 value = (*p++ & 0xf) << 12;
111 value |= (*p++ & 0x3f) << 6;
112 value |= *p++ & 0x3f;
113 if (value < 0x800)
114 return -4;
115 /* surrogate pair code points are not valid */
116 if (value >= 0xd800 && value < 0xe000)
117 return -2;
118 ret = 3;
119 } else if ((*p & 0xf8) == 0xf0 && (*p < 0xf5)) {
120 if (len < 4)
121 return -1;
122 if (((p[1] & 0xc0) != 0x80) ||
123 ((p[2] & 0xc0) != 0x80) ||
124 ((p[3] & 0xc0) != 0x80))
125 return -3;
126 value = ((unsigned long)(*p++ & 0x7)) << 18;
127 value |= (*p++ & 0x3f) << 12;
128 value |= (*p++ & 0x3f) << 6;
129 value |= *p++ & 0x3f;
130 if (value < 0x10000)
131 return -4;
132 if (value > UNICODE_MAX)
133 return -2;
134 ret = 4;
135 } else
136 return -2;
137 *val = value;
138 return ret;
139}
140
141/* This takes a Unicode code point 'value' and writes its UTF-8 encoded form
142 * in 'str' where 'str' is a buffer of at least length 'len'. If 'str'
143 * is NULL, then nothing is written and just the return code is determined.
144
145 * Returns less than zero on error:
146 * -1 if 'str' is not NULL and 'len' is too small
147 * -2 if 'value' is an invalid character (surrogate or out-of-range)
148 *
149 * Otherwise, returns the number of bytes in 'value's encoded form
150 * (i.e., the number of bytes written to 'str' when it's not NULL).
151 *
152 * It will need at most 4 characters.
153 */
154
155int
156UTF8_putc(unsigned char *str, int len, unsigned long value)
157{
158 if (value < 0x80) {
159 if (str != NULL) {
160 if (len < 1)
161 return -1;
162 str[0] = (unsigned char)value;
163 }
164 return 1;
165 }
166 if (value < 0x800) {
167 if (str != NULL) {
168 if (len < 2)
169 return -1;
170 str[0] = (unsigned char)(((value >> 6) & 0x1f) | 0xc0);
171 str[1] = (unsigned char)((value & 0x3f) | 0x80);
172 }
173 return 2;
174 }
175 if (value < 0x10000) {
176 if (UNICODE_IS_SURROGATE(value))
177 return -2;
178 if (str != NULL) {
179 if (len < 3)
180 return -1;
181 str[0] = (unsigned char)(((value >> 12) & 0xf) | 0xe0);
182 str[1] = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
183 str[2] = (unsigned char)((value & 0x3f) | 0x80);
184 }
185 return 3;
186 }
187 if (value <= UNICODE_MAX) {
188 if (str != NULL) {
189 if (len < 4)
190 return -1;
191 str[0] = (unsigned char)(((value >> 18) & 0x7) | 0xf0);
192 str[1] = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
193 str[2] = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
194 str[3] = (unsigned char)((value & 0x3f) | 0x80);
195 }
196 return 4;
197 }
198 return -2;
199}
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