#48746 [NEW]: Unable to browse directories within Junction Points

From:             ddkees at illinois dot edu
Operating system: Windows Server 2003
PHP version:      5.3.0
PHP Bug Type:     *Directory/Filesystem functions
Bug description:  Unable to browse directories within Junction Points

Description:
------------
After updating this morning (June 30) to 5.3.0, our __autoload() function
failed to identify any classes located in subfolders of the windows
Junction Point which contains our class files.  

Our __autoload() function is recursive, descending into the filesystem
looking for class files which match the one that we're trying to load. 
However, since the /includes/classes folder is a Junction Point, only other
Junction Points return true when we use both is_dir() and
DirectoryIterator::isDir() to try and identify folders from files. 
DirectoryIterator::isLink() also returns false.  

However, if we change our __autoloader() to include files from the source
of the Junction Point, it works as expected, but this is only a solution
for a sub-set of the sites that are available on our server.

Reproduce code:
---------------
function __autoload($class) {
	if(!function_exists("find_file")) {
		function find_file($directory, $target) {
			$dir = opendir($directory);
			while(($file = readdir($dir))!==false) {
				if($file == "_notes" || substr($file, 0, 1)==".") continue;
				if(is_dir($directory . "/" . $file)) find_file($directory . "/" .
$file, $target);
				elseif(basename($file, ".php") == $target) { require_once($directory .
"/" . $file); return; }
			}
		}
	}
		
	find_file($_SERVER['DOCUMENT_ROOT'] . "includes/classes",
strtolower($class));
}

Expected result:
----------------
The expected result is that starting from $_SERVER["DOCUMENT_ROOt"] .
"/includes/classes" we identify folders and descend into them to look for a
file named $class.php where $class is the parameter sent to __autoload(). 
When that file is found, it's included.

Actual result:
--------------
No folders are actually traversed, either when using the code above or
when altering it to use the DirectoryIteratory SPL object.  All
non-Junction Points return false from is_dir() and, as a result, they are
never traversed and the system will also attempt to include them as files
if the elseif-conditional evaluates to true.

-- 
Edit bug report at http://bugs.php.net/?id=48746&edit=1
-- 
Try a CVS snapshot (PHP 5.2):        http://bugs.php.net/fix.php?id=48746&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):        http://bugs.php.net/fix.php?id=48746&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):        http://bugs.php.net/fix.php?id=48746&r=trysnapshot60
Fixed in CVS:                        http://bugs.php.net/fix.php?id=48746&r=fixedcvs
Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=48746&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=48746&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=48746&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=48746&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=48746&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=48746&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=48746&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=48746&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=48746&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=48746&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=48746&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=48746&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=48746&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=48746&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=48746&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=48746&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=48746&r=mysqlcfg