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Annotation of ircnowd/src/portab/strlcpy.c, Revision 1.1.1.1

1.1       tomglok     1: /*
                      2:  * ngIRCd -- The Next Generation IRC Daemon
                      3:  * Copyright (c)2001-2014 Alexander Barton (alex@barton.de) and Contributors.
                      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:
                     12: #include "portab.h"
                     13:
                     14: /**
                     15:  * @file
                     16:  * strlcpy() and strlcat() replacement functions.
                     17:  *
                     18:  * See <http://www.openbsd.org/papers/strlcpy-paper.ps> for details.
                     19:  *
                     20:  * Code partially borrowed from compat.c of rsync, written by Andrew
                     21:  * Tridgell (1998) and Martin Pool (2002):
                     22:  * <http://cvs.samba.org/cgi-bin/cvsweb/rsync/lib/compat.c>
                     23:  */
                     24:
                     25: #include <string.h>
                     26: #include <sys/types.h>
                     27:
                     28: #ifndef HAVE_STRLCAT
                     29:
                     30: GLOBAL size_t
                     31: strlcat( char *dst, const char *src, size_t size )
                     32: {
                     33:        /* Like strncat() but does not 0 fill the buffer and
                     34:         * always null terminates. */
                     35:
                     36:        size_t len1 = strlen( dst );
                     37:        size_t len2 = strlen( src );
                     38:        size_t ret = len1 + len2;
                     39:
                     40:        if( size && ( len1 < size - 1 )) {
                     41:                if( len2 >= size - len1 )
                     42:                        len2 = size - len1 - 1;
                     43:                memcpy( dst + len1, src, len2 );
                     44:                dst[len1 + len2] = 0;
                     45:        }
                     46:        return ret;
                     47: } /* strlcat */
                     48:
                     49: #endif
                     50:
                     51: #ifndef HAVE_STRLCPY
                     52:
                     53: GLOBAL size_t
                     54: strlcpy( char *dst, const char *src, size_t size )
                     55: {
                     56:        /* Like strncpy but does not 0 fill the buffer and
                     57:         * always null terminates. */
                     58:
                     59:        size_t len = strlen( src );
                     60:        size_t ret = len;
                     61:
                     62:        if( size > 0 ) {
                     63:                if( len >= size ) len = size - 1;
                     64:                memcpy( dst, src, len );
                     65:                dst[len] = 0;
                     66:        }
                     67:        return ret;
                     68: } /* strlcpy */
                     69:
                     70: #endif
                     71:
                     72: /* -eof- */