/src/php-src/main/strlcpy.c
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1 | | /* |
2 | | +----------------------------------------------------------------------+ |
3 | | | Copyright (c) The PHP Group | |
4 | | +----------------------------------------------------------------------+ |
5 | | | This source file is subject to version 3.01 of the PHP license, | |
6 | | | that is bundled with this package in the file LICENSE, and is | |
7 | | | available through the world-wide-web at the following url: | |
8 | | | https://www.php.net/license/3_01.txt | |
9 | | | If you did not receive a copy of the PHP license and are unable to | |
10 | | | obtain it through the world-wide-web, please send a note to | |
11 | | | license@php.net so we can mail you a copy immediately. | |
12 | | +----------------------------------------------------------------------+ |
13 | | | Author: | |
14 | | +----------------------------------------------------------------------+ |
15 | | */ |
16 | | |
17 | | #include "php.h" |
18 | | |
19 | | #ifdef USE_STRLCPY_PHP_IMPL |
20 | | |
21 | | /* $OpenBSD: strlcpy.c,v 1.15 2016/10/16 17:37:39 dtucker Exp $ */ |
22 | | |
23 | | /* |
24 | | * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> |
25 | | * All rights reserved. |
26 | | * |
27 | | * Redistribution and use in source and binary forms, with or without |
28 | | * modification, are permitted provided that the following conditions |
29 | | * are met: |
30 | | * 1. Redistributions of source code must retain the above copyright |
31 | | * notice, this list of conditions and the following disclaimer. |
32 | | * 2. Redistributions in binary form must reproduce the above copyright |
33 | | * notice, this list of conditions and the following disclaimer in the |
34 | | * documentation and/or other materials provided with the distribution. |
35 | | * 3. The name of the author may not be used to endorse or promote products |
36 | | * derived from this software without specific prior written permission. |
37 | | * |
38 | | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
39 | | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
40 | | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
41 | | * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
42 | | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
43 | | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
44 | | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
45 | | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
46 | | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
47 | | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
48 | | */ |
49 | | |
50 | | #if defined(LIBC_SCCS) && !defined(lint) |
51 | | static const char *rcsid = "$OpenBSD: strlcpy.c,v 1.15 2016/10/16 17:37:39 dtucker Exp $"; |
52 | | #endif /* LIBC_SCCS and not lint */ |
53 | | |
54 | | #include <sys/types.h> |
55 | | #include <string.h> |
56 | | |
57 | | /* |
58 | | * Copy src to string dst of size siz. At most siz-1 characters |
59 | | * will be copied. Always NUL terminates (unless siz == 0). |
60 | | * Returns strlen(src); if retval >= siz, truncation occurred. |
61 | | */ |
62 | | PHPAPI size_t php_strlcpy(char *dst, const char *src, size_t siz) |
63 | 0 | { |
64 | 0 | const char *s = src; |
65 | 0 | size_t n = siz; |
66 | | |
67 | | /* Copy as many bytes as will fit */ |
68 | 0 | if (n != 0) { |
69 | 0 | while (--n != 0) { |
70 | 0 | if ((*dst++ = *src++) == 0) |
71 | 0 | break; |
72 | 0 | } |
73 | 0 | } |
74 | | |
75 | | /* Not enough room in dst, add NUL and traverse rest of src */ |
76 | 0 | if (n == 0) { |
77 | 0 | if (siz != 0) |
78 | 0 | *dst = '\0'; /* NUL-terminate dst */ |
79 | 0 | while (*src++) |
80 | 0 | ; |
81 | 0 | } |
82 | |
|
83 | 0 | return(src - s - 1); |
84 | 0 | } |
85 | | |
86 | | #endif /* !HAVE_STRLCPY */ |