suricata
util-strlcpyu.c
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1 /*
2  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote products
14  * derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
17  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
18  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
19  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 /* $Id: strlcpyu.c,v 1.4 2003/10/20 15:03:27 chrisgreen Exp $ */
29 
30 #include "suricata-common.h"
31 
32 #ifndef HAVE_STRLCPY
33 
34 #if defined(LIBC_SCCS) && !defined(lint)
35 static char *rcsid = "$OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp $";
36 #endif /* LIBC_SCCS and not lint */
37 
38 /*
39  * Copy src to string dst of size siz. At most siz-1 characters
40  * will be copied. Always NUL terminates (unless siz == 0).
41  * Returns strlen(src); if retval >= siz, truncation occurred.
42  */
43 size_t strlcpy(dst, src, siz)
44  char *dst;
45  const char *src;
46  size_t siz;
47 {
48  register char *d = dst;
49  register const char *s = src;
50  register size_t n = siz;
51 
52  /* Copy as many bytes as will fit */
53  if (n != 0 && --n != 0) {
54  do {
55  if ((*d++ = *s++) == 0)
56  break;
57  } while (--n != 0);
58  }
59 
60  /* Not enough room in dst, add NUL and traverse rest of src */
61  if (n == 0) {
62  if (siz != 0)
63  *d = '\0'; /* NUL-terminate dst */
64  while (*s++)
65  ;
66  }
67 
68  return(s - src - 1); /* count does not include NUL */
69 }
70 #endif
uint16_t src
uint16_t dst
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition: util-strlcpyu.c:43