/src/php-src/main/strlcpy.c
Line | Count | Source |
1 | | /* |
2 | | +----------------------------------------------------------------------+ |
3 | | | Copyright © The PHP Group and Contributors. | |
4 | | +----------------------------------------------------------------------+ |
5 | | | This source file is subject to the Modified BSD License that is | |
6 | | | bundled with this package in the file LICENSE, and is available | |
7 | | | through the World Wide Web at <https://www.php.net/license/>. | |
8 | | | | |
9 | | | SPDX-License-Identifier: BSD-3-Clause | |
10 | | +----------------------------------------------------------------------+ |
11 | | */ |
12 | | |
13 | | #include "php.h" |
14 | | |
15 | | #ifdef USE_STRLCPY_PHP_IMPL |
16 | | |
17 | | /* $OpenBSD: strlcpy.c,v 1.15 2016/10/16 17:37:39 dtucker Exp $ */ |
18 | | |
19 | | /* |
20 | | * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> |
21 | | * All rights reserved. |
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 above 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. The name of the author may not be used to endorse or promote products |
32 | | * derived from this software without specific prior written permission. |
33 | | * |
34 | | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
35 | | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
36 | | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
37 | | * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
38 | | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
39 | | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
40 | | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
41 | | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
42 | | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
43 | | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
44 | | */ |
45 | | |
46 | | #if defined(LIBC_SCCS) && !defined(lint) |
47 | | static const char *rcsid = "$OpenBSD: strlcpy.c,v 1.15 2016/10/16 17:37:39 dtucker Exp $"; |
48 | | #endif /* LIBC_SCCS and not lint */ |
49 | | |
50 | | #include <sys/types.h> |
51 | | #include <string.h> |
52 | | |
53 | | /* |
54 | | * Copy src to string dst of size siz. At most siz-1 characters |
55 | | * will be copied. Always NUL terminates (unless siz == 0). |
56 | | * Returns strlen(src); if retval >= siz, truncation occurred. |
57 | | */ |
58 | | PHPAPI size_t php_strlcpy(char *dst, const char *src, size_t siz) |
59 | 0 | { |
60 | 0 | const char *s = src; |
61 | 0 | size_t n = siz; |
62 | | |
63 | | /* Copy as many bytes as will fit */ |
64 | 0 | if (n != 0) { |
65 | 0 | while (--n != 0) { |
66 | 0 | if ((*dst++ = *src++) == 0) |
67 | 0 | break; |
68 | 0 | } |
69 | 0 | } |
70 | | |
71 | | /* Not enough room in dst, add NUL and traverse rest of src */ |
72 | 0 | if (n == 0) { |
73 | 0 | if (siz != 0) |
74 | 0 | *dst = '\0'; /* NUL-terminate dst */ |
75 | 0 | while (*src++) |
76 | 0 | ; |
77 | 0 | } |
78 | |
|
79 | 0 | return(src - s - 1); |
80 | 0 | } |
81 | | |
82 | | #endif /* !HAVE_STRLCPY */ |