1 /*
2  * ngIRCd -- The Next Generation IRC Daemon
3  * Copyright (c)2001-2005 Alexander Barton (alex@barton.de)
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  * Please read the file COPYING, README and AUTHORS for more information.
10  *
11  * strlcpy() and strlcat() replacement functions.
12  * See <http://www.openbsd.org/papers/strlcpy-paper.ps> for details.
13  *
14  * Code partially borrowed from compat.c of rsync, written by Andrew
15  * Tridgell (1998) and Martin Pool (2002):
16  * <http://cvs.samba.org/cgi-bin/cvsweb/rsync/lib/compat.c>
17  */
18 
19 
20 #include "portab.h"
21 
22 static char UNUSED id[] = "$Id: strlcpy.c,v 1.5 2005/03/19 18:43:50 fw Exp $";
23 
24 #include "imp.h"
25 #include <string.h>
26 #include <sys/types.h>
27 
28 #include "exp.h"
29 
30 
31 #ifndef HAVE_STRLCAT
32 
33 GLOBAL size_t
34 strlcat( char *dst, const char *src, size_t size )
35 {
36 	/* Like strncat() but does not 0 fill the buffer and
37 	 * always null terminates. */
38 
39 	size_t len1 = strlen( dst );
40 	size_t len2 = strlen( src );
41 	size_t ret = len1 + len2;
42 
43 	if( size && ( len1 < size - 1 )) {
44 		if( len2 >= size - len1 )
45 			len2 = size - len1 - 1;
46 		memcpy( dst + len1, src, len2 );
47 		dst[len1 + len2] = 0;
48 	}
49 	return ret;
50 } /* strlcat */
51 
52 #endif
53 
54 
55 #ifndef HAVE_STRLCPY
56 
57 GLOBAL size_t
58 strlcpy( char *dst, const char *src, size_t size )
59 {
60 	/* Like strncpy but does not 0 fill the buffer and
61 	 * always null terminates. */
62 
63 	size_t len = strlen( src );
64 	size_t ret = len;
65 
66 	if( size > 0 ) {
67 		if( len >= size ) len = size - 1;
68 		memcpy( dst, src, len );
69 		dst[len] = 0;
70 	}
71 	return ret;
72 } /* strlcpy */
73 
74 #endif
75 
76 
77 /* -eof- */