#26210 [NEW]: CON, NUL, PRN... special files : is_file return true

From: iubito at asp-php dot net Operating system: Windows (all) PHP version: 4.3.3 PHP Bug Type: *Directory/Filesystem functions Bug description: CON, NUL, PRN... special files : is_file return true Description: ------------ Hello As we often forget that Windows is based on DOS... we forget that in DOS it exists special file (CON, NUL, PRN, LPT1, LPT2, AUX, COM1, COM2, COM3, COM4). Under DOS, echo foobar > nul nul is considered as a file. Now in Windows Explorer, if you try to create a file called aux.<the_extension_you_want> or nul.bmp or prn.zip or lpt2.php... Windows return an error, something like "Impossible to create nul.bmp, a file with this name already exists..." That shows us that windows consider aux.* nul.* con.* as files. Now here I want to go... All functions like is_directory, is_file, file_exists... should return false. Since today, it ask windows "does the file nul.bmp exist ?" and Windows answer "yes!". But this file is not openable, writeable, readable. Reproduce code: --------------- <? $bugfile = 'c:/nul.gif'; // or aux.* or con.*.... if (is_file($bugfile)) echo $bugfile.' exists! <img src="'.$bugfile.'" />'; else echo $bugfile.' doesn\'t exist!'; // Now is a more problematic case I've seen in my app $inc = 'aux.php'; // the name is generated automatically... if (is_file('mydirectory/'.$inc)) { include('mydirectory/'.$inc); } ?> Expected result: ---------------- c:/nul.gif doesn't exist! Actual result: -------------- c:/nul.gif exists <img src="c:/nul.gif" /> <-- that's a red cross! Warning: main(PHPmyBrowserCustom/addon-file/AUX.php): failed to open stream: No such file or directory in F:\www\pays\flags\PHPmyBrowser\main.php on line 587 Fatal error: main(): Failed opening required 'PHPmyBrowserCustom/addon-file/AUX.php' (include_path='.;c:\php4\pear') in F:\www\pays\flags\PHPmyBrowser\main.php on line 587 -- Edit bug report at http://bugs.php.net/?id=26210&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=26210&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=26210&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=26210&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=26210&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=26210&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=26210&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=26210&r=support Expected behavior: http://bugs.php.net/fix.php?id=26210&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=26210&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=26210&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=26210&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=26210&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=26210&r=dst IIS Stability: http://bugs.php.net/fix.php?id=26210&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=26210&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=26210&r=float