1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2001 Mike Barcroft <mike@FreeBSD.org>
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Chris Torek.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*! \file */
#ifdef _GNU_SOURCE
#undef _GNU_SOURCE
#endif /* ifdef _GNU_SOURCE */
#include <string.h>
#include <isc/string.h> /* IWYU pragma: keep */
#include <isc/util.h>
#if !defined(HAVE_STRLCPY)
size_t
strlcpy(char *dst, const char *src, size_t size) {
char *d = dst;
const char *s = src;
size_t n = size;
/* Copy as many bytes as will fit */
if (n != 0U && --n != 0U) {
do {
if ((*d++ = *s++) == 0) {
break;
}
} while (--n != 0U);
}
/* Not enough room in dst, add NUL and traverse rest of src */
if (n == 0U) {
if (size != 0U) {
*d = '\0'; /* NUL-terminate dst */
}
while (*s++) {
}
}
return (s - src - 1); /* count does not include NUL */
}
#endif /* !defined(HAVE_STRLCPY) */
#if !defined(HAVE_STRLCAT)
size_t
strlcat(char *dst, const char *src, size_t size) {
char *d = dst;
const char *s = src;
size_t n = size;
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (n-- != 0U && *d != '\0') {
d++;
}
dlen = d - dst;
n = size - dlen;
if (n == 0U) {
return (dlen + strlen(s));
}
while (*s != '\0') {
if (n != 1U) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return (dlen + (s - src)); /* count does not include NUL */
}
#endif /* !defined(HAVE_STRLCAT) */
#if !defined(HAVE_STRNSTR)
char *
strnstr(const char *s, const char *find, size_t slen) {
char c, sc, *r;
size_t len;
if ((c = *find++) != '\0') {
len = strlen(find);
do {
do {
if (slen-- < 1 || (sc = *s++) == '\0')
return (NULL);
} while (sc != c);
if (len > slen)
return (NULL);
} while (strncmp(s, find, len) != 0);
s--;
}
DE_CONST(s, r);
return (r);
}
#endif
int
isc_string_strerror_r(int errnum, char *buf, size_t buflen) {
#if defined(_WIN32) || defined(_WIN64)
return (strerror_s(buf, buflen, errnum));
#else /* if defined(_WIN32) || defined(_WIN64) */
return (strerror_r(errnum, buf, buflen));
#endif /* if defined(_WIN32) || defined(_WIN64) */
}
|
