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| <?php |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // // |
| // Copyright (C) 2006 Phorum Development Team // |
| // http://www.phorum.org // |
| // // |
| // This program is free software. You can redistribute it and/or modify // |
| // it under the terms of either the current Phorum License (viewable at // |
| // phorum.org) or the Phorum License that was distributed with this file // |
| // // |
| // This program is distributed in the hope that it will be useful, // |
| // but WITHOUT ANY WARRANTY, without even the implied warranty of // |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. // |
| // // |
| // You should have received a copy of the Phorum License // |
| // along with this program. // |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| // Check if the cache directory is available and if |
| // files and directories can be created in it. Also |
| // do a basic check on Phorums caching API. |
| |
| $phorum_check = "Phorum cache"; |
| |
| function phorum_check_cache(){ |
| $PHORUM = $GLOBALS["PHORUM"]; |
| $dir = $PHORUM["cache"]; |
| |
| // Some general solution descriptions. |
| $solution_1 = "Change the Cache Directory setting under |
| General Settings."; |
| $solution_2 = "Change the Cache Directory setting under General |
| Settings or give your webserver more permissions |
| for the current cache directory."; |
| |
| // Check if the cache directory exists. |
| if (! file_exists($dir) || ! is_dir($dir)) return array( |
| PHORUM_SANITY_CRIT, |
| "The system is unable to find the cache |
| directory \"".htmlspecialchars($dir)."\" on |
| your system.", |
| $solution_1 |
| ); |
| |
| // Check if we can create files in the cache directory. |
| $fp = @fopen ("$dir/sanity_check_dummy_file", "w"); |
| if (! $fp) return array ( |
| PHORUM_SANITY_CRIT, |
| "The system is unable to write files |
| to your cache directory \"".htmlspecialchars($dir)."\". |
| The system error was:<br/><br/>". |
| htmlspecialchars($php_errormsg).".", |
| $solution_2 |
| ); |
| fclose($fp); |
| |
| // Some very unusual thing might happen. On Windows2000 we have seen |
| // that the webserver can write a message to the cache directory, |
| // but that it cannot read it afterwards. Probably due to |
| // specific NTFS file permission settings. So here we have to make |
| // sure that we can open the file that we just wrote. |
| $checkfp = fopen("$dir/sanity_check_dummy_file", "r"); |
| if (! $checkfp) return array( |
| PHORUM_SANITY_CRIT, |
| "The system was able to write a file to your cache directory |
| \"".htmlspecialchars($dir)."\", but afterwards the created |
| file could not be read by the webserver. This is probably |
| caused by the file permissions on your cache directory.", |
| $solution_2 |
| ); |
| |
| unlink("$dir/sanity_check_dummy_file"); |
| |
| // Check if we can create directories in the cache directory. |
| if (! @mkdir("$dir/sanity_check_dummy_dir")) return array( |
| PHORUM_SANITY_CRIT, |
| "The system is unable to create directories |
| in your cache directory \"".htmlspecialchars($dir)."\". |
| The system error was:<br/><br/>".htmlspecialchars($php_errormsg).".", |
| $solution_2 |
| ); |
| rmdir("$dir/sanity_check_dummy_dir"); |
| |
| // All seems OK. Do a final system check where we check |
| // the caching system like the Phorum system will do. |
| phorum_cache_put('sanity_checks', 'dummy', 'dummy'); |
| $entry = phorum_cache_get('sanity_checks', 'dummy'); |
| phorum_cache_remove('sanity_checks', 'dummy'); |
| if ($entry != 'dummy') return array( |
| PHORUM_SANITY_WARN, |
| "There might be a problem in Phorum's caching system. |
| Storing and retrieving a dummy key failed. If you |
| experience problems with your Phorum installation, |
| it might me because of this.", |
| "As a work around, you can disable the caching facilities |
| in the admin interface. Please contact the Phorum |
| developers to find out what the problem is.", |
| ); |
| |
| return array (PHORUM_SANITY_OK, NULL); |
| } |
| ?> |