PHP 4.0 Bug #3697: open_basedir prevents creating files with fopen

From: djm@web.us.uu.net Operating system: BSD/OS 4.0.1 PHP version: 4.0 Beta 4 Patch Level 1 PHP Bug Type: Misbehaving function Bug description: open_basedir prevents creating files with fopen I have open_basedir set and I am trying to create a file under that directory using $fp = fopen("cities.wddx", "w"); However, it fails: <b>Warning</b>: open_basedir restriction in effect. File is in wrong directory in <b>/homes/web/testtest5/html/serialize.php</b> on line <b>17</b><br> Adding some more warning messages to the PHP source code reveals that the stat() toward the end of php_realpath() is the culprit. Of course it can't stat the file if I'm trying to create it. A suggested fix: Index: php_realpath.c @@ -251,12 +258,25 @@ } /* Check if the resolved path is a directory */ - if (stat(path_construction, &filestat) != 0) return NULL; + if (stat(path_construction, &filestat) != 0) { + /* It doesn't exist yet; check the directory it's in instead. */ + while (*--writepos != '/' && writepos > path_construction) + ; + *writepos = 0; + if (stat(path_construction, &filestat) != 0) { + return NULL; + } + } if (S_ISDIR(filestat.st_mode)) { /* It's a directory, append a / if needed */ if (*(writepos-1) != '/') { /* Check for overflow */