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Updated to latest strl{cat|cpy} code of rsync:

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- Make sure that strlcpy() returns the right value when the bufsize is 0.
- Fixed a bug in strlcat() where it would not properly detect a no-change
  condition if called with an initial string longer than the specified
  size limit (due to an unsigned var's inability to go negative).
Patch by Florian Westphal, <westphal@foo.fh-furtwangen.de>.
This commit is contained in:
Alexander Barton 2005-02-27 09:29:13 +00:00
parent bcb6cf3ffa
commit 3da942e237
1 changed files with 12 additions and 11 deletions
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23
src/portab/strlcpy.c
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@ -1,6 +1,6 @@
/* /*
* ngIRCd -- The Next Generation IRC Daemon * ngIRCd -- The Next Generation IRC Daemon
* Copyright (c)2001,2002 by Alexander Barton (alex@barton.de) * Copyright (c)2001-2005 Alexander Barton (alex@barton.de)
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@ -13,13 +13,13 @@
* *
* Code partially borrowed from compat.c of rsync, written by Andrew * Code partially borrowed from compat.c of rsync, written by Andrew
* Tridgell (1998) and Martin Pool (2002): * Tridgell (1998) and Martin Pool (2002):
* <http://samba.anu.edu.au/rsync/doxygen/head/lib_2compat_8c.html> * <http://cvs.samba.org/cgi-bin/cvsweb/rsync/lib/compat.c>
*/ */
#include "portab.h" #include "portab.h"
static char UNUSED id[] = "$Id: strlcpy.c,v 1.3 2005/01/18 09:05:37 alex Exp $"; static char UNUSED id[] = "$Id: strlcpy.c,v 1.4 2005/02/27 09:29:13 alex Exp $";
#include "imp.h" #include "imp.h"
#include <string.h> #include <string.h>
@ -39,10 +39,10 @@ strlcat( CHAR *dst, CONST CHAR *src, size_t size )
size_t len1 = strlen( dst ); size_t len1 = strlen( dst );
size_t len2 = strlen( src ); size_t len2 = strlen( src );
size_t ret = len1 + len2; size_t ret = len1 + len2;
if( len1 + len2 >= size ) len2 = size - ( len1 + 1 ); if( size && ( len1 < size - 1 )) {
if( len2 > 0 ) if( len2 >= size - len1 )
{ len2 = size - len1 - 1;
memcpy( dst + len1, src, len2 ); memcpy( dst + len1, src, len2 );
dst[len1 + len2] = 0; dst[len1 + len2] = 0;
} }
@ -63,10 +63,11 @@ strlcpy( CHAR *dst, CONST CHAR *src, size_t size )
size_t len = strlen( src ); size_t len = strlen( src );
size_t ret = len; size_t ret = len;
if( size <= 0 ) return 0; if( size > 0 ) {
if( len >= size ) len = size - 1; if( len >= size ) len = size - 1;
memcpy( dst, src, len ); memcpy( dst, src, len );
dst[len] = 0; dst[len] = 0;
}
return ret; return ret;
} /* strlcpy */ } /* strlcpy */