Bug #61339 [Fbk->Opn]: is_readable() causes crash in special cases

Edit report at https://bugs.php.net/bug.php?id=61339&edit=1 ID: 61339 User updated by: ziegenberg at web dot de Reported by: ziegenberg at web dot de Summary: is_readable() causes crash in special cases -Status: Feedback +Status: Open Type: Bug Package: Filesystem function related Operating System: Windows 7 Pro 64bit PHP Version: 5.3.10 Block user comment: N Private report: N New Comment: It's not possible to ue the Debug Diagnostic Tools on Windows 7 (you can install it but only use it for analysis). The newer version 1.2 doesn't run on non-English systems (known problem). A workaround helped to fix the first errors with the installation, but there are other errors that don't allow an installation. For two hours I tried everything to get it working, but the only result I get are innumerable error pop ups. I have to give it up now, sorry. Previous Comments: ------------------------------------------------------------------------ [2012-03-10 16:54:15] pajoye@php.net Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. ------------------------------------------------------------------------ [2012-03-10 12:06:02] ziegenberg at web dot de Here is a crash report I found, perhaps this helps: ----- Version=1 EventType=APPCRASH EventTime=129758533564007575 ReportType=2 Consent=1 ReportIdentifier=214d7de4-6aa6-11e1-bd6c-4c8093870ef0 IntegratorReportIdentifier=214d7de3-6aa6-11e1-bd6c-4c8093870ef0 WOW64=1 Response.type=4 Sig[0].Name=Anwendungsname Sig[0].Value=httpd.exe Sig[1].Name=Anwendungsversion Sig[1].Value=2.2.22.0 Sig[2].Name=Anwendungszeitstempel Sig[2].Value=4f4a84ad Sig[3].Name=Fehlermodulname Sig[3].Value=php5ts.dll Sig[4].Name=Fehlermodulversion Sig[4].Value=5.3.9.0 Sig[5].Name=Fehlermodulzeitstempel Sig[5].Value=4f591617 Sig[6].Name=Ausnahmecode Sig[6].Value=c0000005 Sig[7].Name=Ausnahmeoffset Sig[7].Value=000a57a0 DynamicSig[1].Name=Betriebsystemversion DynamicSig[1].Value=6.1.7601.2.1.0.256.48 DynamicSig[2].Name=Gebietsschema-ID DynamicSig[2].Value=1031 DynamicSig[22].Name=Zusatzinformation 1 DynamicSig[22].Value=0a9e DynamicSig[23].Name=Zusatzinformation 2 DynamicSig[23].Value=0a9e372d3b4ad19135b953a78882e789 DynamicSig[24].Name=Zusatzinformation 3 DynamicSig[24].Value=0a9e DynamicSig[25].Name=Zusatzinformation 4 DynamicSig[25].Value=0a9e372d3b4ad19135b953a78882e789 UI[2]=C:\apache2\bin\httpd.exe UI[3]=Apache HTTP Server funktioniert nicht mehr UI[4]=Windows kann online nach einer Lösung für das Problem suchen. UI[5]=Online nach einer Lösung suchen (empfohlen) UI[6]=Später nach einer Lösung suchen (empfohlen) UI[7]=Schließen UI[8]=Apache HTTP Server wurde beendet und geschlossen. UI[9]=Die Anwendung wird aufgrund eines Problems nicht mehr richtig ausgeführt. Sie erhalten Nachricht, wenn eine Lösung verfügbar ist. UI[10]=S&chließen LoadedModule[0]=C:\apache2\bin\httpd.exe LoadedModule[1]=C:\Windows\SysWOW64\ntdll.dll LoadedModule[2]=C:\Windows\syswow64\kernel32.dll LoadedModule[3]=C:\Windows\syswow64\KERNELBASE.dll LoadedModule[4]=C:\apache2\bin\libhttpd.dll LoadedModule[5]=C:\Windows\syswow64\WS2_32.dll LoadedModule[6]=C:\Windows\syswow64\msvcrt.dll LoadedModule[7]=C:\Windows\syswow64\RPCRT4.dll LoadedModule[8]=C:\Windows\syswow64\SspiCli.dll LoadedModule[9]=C:\Windows\syswow64\CRYPTBASE.dll LoadedModule[10]=C:\Windows\SysWOW64\sechost.dll LoadedModule[11]=C:\Windows\syswow64\NSI.dll LoadedModule[12]=C:\Windows\system32\MSWSOCK.dll LoadedModule[13]=C:\Windows\syswow64\user32.dll LoadedModule[14]=C:\Windows\syswow64\GDI32.dll LoadedModule[15]=C:\Windows\syswow64\LPK.dll LoadedModule[16]=C:\Windows\syswow64\USP10.dll LoadedModule[17]=C:\Windows\syswow64\ADVAPI32.dll LoadedModule[18]=C:\apache2\bin\libaprutil-1.dll LoadedModule[19]=C:\apache2\bin\libapriconv-1.dll LoadedModule[20]=C:\apache2\bin\libapr-1.dll LoadedModule[21]=C:\Windows\syswow64\SHELL32.dll LoadedModule[22]=C:\Windows\syswow64\SHLWAPI.dll LoadedModule[23]=C:\Windows\system32\MSVCR100.dll LoadedModule[24]=C:\Windows\system32\IMM32.DLL LoadedModule[25]=C:\Windows\syswow64\MSCTF.dll LoadedModule[26]=C:\Windows\SysWOW64\nvinit.dll LoadedModule[27]=C:\Windows\System32\wship6.dll LoadedModule[28]=C:\Windows\System32\wshtcpip.dll LoadedModule[29]=C:\apache2\modules\mod_actions.so LoadedModule[30]=C:\apache2\modules\mod_alias.so LoadedModule[31]=C:\apache2\modules\mod_asis.so LoadedModule[32]=C:\apache2\modules\mod_auth_basic.so LoadedModule[33]=C:\apache2\modules\mod_authn_default.so LoadedModule[34]=C:\apache2\modules\mod_authn_file.so LoadedModule[35]=C:\apache2\modules\mod_authz_default.so LoadedModule[36]=C:\apache2\modules\mod_authz_groupfile.so LoadedModule[37]=C:\apache2\modules\mod_authz_host.so LoadedModule[38]=C:\apache2\modules\mod_authz_user.so LoadedModule[39]=C:\apache2\modules\mod_autoindex.so LoadedModule[40]=C:\apache2\modules\mod_cgi.so LoadedModule[41]=C:\apache2\modules\mod_deflate.so LoadedModule[42]=C:\apache2\bin\zlib1.dll LoadedModule[43]=C:\apache2\modules\mod_dir.so LoadedModule[44]=C:\apache2\modules\mod_env.so LoadedModule[45]=C:\apache2\modules\mod_expires.so LoadedModule[46]=C:\apache2\modules\mod_include.so LoadedModule[47]=C:\apache2\modules\mod_isapi.so LoadedModule[48]=C:\apache2\modules\mod_log_config.so LoadedModule[49]=C:\apache2\modules\mod_mime.so LoadedModule[50]=C:\apache2\modules\mod_negotiation.so LoadedModule[51]=C:\apache2\modules\mod_rewrite.so LoadedModule[52]=C:\apache2\modules\mod_setenvif.so LoadedModule[53]=C:\PHP\php5apache2_2.dll LoadedModule[54]=C:\PHP\php5ts.dll LoadedModule[55]=C:\Windows\syswow64\OLEAUT32.dll LoadedModule[56]=C:\Windows\syswow64\ole32.dll LoadedModule[57]=C:\Windows\system32\ODBC32.dll LoadedModule[58]=C:\Windows\system32\DNSAPI.dll LoadedModule[59]=C:\Windows\WinSxS\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.6161_none_50934f2ebcb7eb57\MSVCR90.dll LoadedModule[60]=C:\Windows\system32\odbcint.dll LoadedModule[61]=C:\PHP\ext\php_bz2.dll LoadedModule[62]=C:\PHP\ext\php_curl.dll LoadedModule[63]=C:\apache2\bin\LIBEAY32.dll LoadedModule[64]=C:\apache2\bin\SSLEAY32.dll LoadedModule[65]=C:\Windows\syswow64\WLDAP32.dll LoadedModule[66]=C:\PHP\ext\php_fileinfo.dll LoadedModule[67]=C:\PHP\ext\php_gd2.dll LoadedModule[68]=C:\PHP\ext\php_gettext.dll LoadedModule[69]=C:\PHP\ext\php_gmp.dll LoadedModule[70]=C:\PHP\ext\php_mbstring.dll LoadedModule[71]=C:\PHP\ext\php_mysql.dll LoadedModule[72]=C:\PHP\ext\php_mysqli.dll LoadedModule[73]=C:\PHP\ext\php_openssl.dll LoadedModule[74]=C:\PHP\ext\php_pdo_mysql.dll LoadedModule[75]=C:\PHP\ext\php_pdo_sqlite.dll LoadedModule[76]=C:\PHP\ext\php_soap.dll LoadedModule[77]=C:\PHP\ext\php_sockets.dll LoadedModule[78]=C:\PHP\ext\php_sqlite3.dll LoadedModule[79]=C:\PHP\ext\php_tidy.dll LoadedModule[80]=C:\PHP\ext\php_xmlrpc.dll LoadedModule[81]=C:\PHP\ext\php_xsl.dll LoadedModule[82]=C:\PHP\ext\php_exif.dll LoadedModule[83]=C:\PHP\ext\php_xdebug.dll FriendlyEventName=Nicht mehr funktionsfähig ConsentKey=APPCRASH AppName=Apache HTTP Server AppPath=C:\apache2\bin\httpd.exe ----- After installing the 5.3 snapshot the version named there is 5.3.9, but for 5.3.10 it's the same. ------------------------------------------------------------------------ [2012-03-10 12:00:35] ziegenberg at web dot de I tested all the current Windows VC9 TS snapshots. Results: 5.3 -> error still present, also when using include() instead of is_readable(). 5.4 -> okay, no error. Trunk (5.5-dev?) -> okay, no error. ------------------------------------------------------------------------ [2012-03-10 11:33:34] pajoye@php.net is_readable does not read the file, so no, it is not what can causes a crash if the contents of the file changed or not. include and require may have a problem due to a bug in the parsing code, which is fixed in svn. Please try using a 5.3 snapshot. ------------------------------------------------------------------------ [2012-03-10 11:29:28] ziegenberg at web dot de Yes, it's the is_readable() function: ... $path = APPLICATION_PATH . DIRECTORY_SEPARATOR . $theme . DIRECTORY_SEPARATOR . 'layout' . DIRECTORY_SEPARATOR . str_replace('_', DIRECTORY_SEPARATOR, $layout) . '.layout.php'; if (!is_readable($path)) { $host = self::getHost(); throw new Cz_Request_Exception("Action configuration error: layout file '$path' for action '$action' and host '$host' does not exist or is not readable."); } ... The path seems to be a part of the problem, but the error depends on more factors. Here are some details of my research: 1) Not 8 spaces are required to create the error, one additional space is enough. This single space can be inserted somewhere in the file to produce the error. 2) I could reproduce it with two different paths, because the Apache directories in my tests where not the same. One is "C:\apache2" and the other is "C:\Apache24". The error occurred in both versions. 3) When I try to create a script to reproduce the bug I don't get an error. Also when I call is_readable() on the original file from there. 4) I renamed the template file. Same behaviour. 5) file_get_contents(), readfile(), file_exists(), file(), fopen() on the same file work as expected (no error). 6) include() and require() behave like is_readable() (error) Is there a way to get more debug information? ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=61339 -- Edit this bug report at https://bugs.php.net/bug.php?id=61339&edit=1