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Annotation of ircnowd/src/portab/strlcpy.c, Revision 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- */