suricata
util-strlcatu.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: strlcatu.c,v 1.4 2003/10/20 15:03:27 chrisgreen Exp $ */
29 
30 #include "suricata-common.h"
31 
32 #ifndef HAVE_STRLCAT
33 
34 #if defined(LIBC_SCCS) && !defined(lint)
35 static char *rcsid = "$OpenBSD: strlcat.c,v 1.5 2001/01/13 16:17:24 millert Exp $";
36 #endif /* LIBC_SCCS and not lint */
37 
38 /*
39  * Appends src to string dst of size siz (unlike strncat, siz is the
40  * full size of dst, not space left). At most siz-1 characters
41  * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
42  * Returns strlen(initial dst) + strlen(src); if retval >= siz,
43  * truncation occurred.
44  */
45 size_t strlcat(dst, src, siz)
46  char *dst;
47  const char *src;
48  size_t siz;
49 {
50  register char *d = dst;
51  register const char *s = src;
52  register size_t n = siz;
53  size_t dlen;
54 
55  /* Find the end of dst and adjust bytes left but don't go past end */
56  while (n-- != 0 && *d != '\0')
57  d++;
58  dlen = d - dst;
59  n = siz - dlen;
60 
61  if (n == 0)
62  return(dlen + strlen(s));
63  while (*s != '\0') {
64  if (n != 1) {
65  *d++ = *s;
66  n--;
67  }
68  s++;
69  }
70  *d = '\0';
71 
72  return(dlen + (s - src)); /* count does not include NUL */
73 }
74 #endif
size_t strlcat(char *dst, const char *src, size_t siz)
Definition: util-strlcatu.c:45
uint16_t src
uint16_t dst