clearcache.php

<?php
/************************************************************************/
/* Oscailt                                                              */
/* Indepenent Media Centre Content Management System                    */
/* ==================================================================== */
/* Copyright (c)2003-2005 by Independent Media Centre Ireland           */
/* http://www.indymedia.ie                                              */
/* Development List: oscailt@lists.indymedia.org                        */
/* See contributions.txt for the list of contributors                   */
/*                                                                      */
/* This program is free software. You can redistribute it and/or modify */
/* it under the terms of the GNU General Public License as published by */
/* the Free Software Foundation. http://www.gnu.org/copyleft/gpl.html   */
/*                                                                      */
/* 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.  See the        */
/* GNU General Public License for more details.                         */
/************************************************************************/

$OSCAILT_SCRIPT = "clearcache.php";
require_once("oscailt_init.inc");
require_once("objects/statistics.inc");
addToPageTitle("Clear Cache and Cache Checks");



function writeClearForm()
{
   global $query_cache;

   if ($query_cache->new_cache == true ) $cache_type_in_use = "New Oscailt 3.3 ";
   else $cache_type_in_use = "Standard (Oscailt 3.1) Type ";

   ?>
   <table align=center class=admin>
   <TR class=admin>
      <th class=admin align=center>Clear Cache</th>
   </tr>
   <tr class=admin>
      <td class=admin><blockquote>The buttons below allow you to clear the various data caches used by oscailt.
      While this usally shouldn't be necessary, you may wish to clear caches if errors become cached
      or cache files get corrupted.
      <BR><BR>
      There is also an addition option to check the database cache directory exists and if it does
      not to create it. For the new database cache directory structure in Oscailt 3.3 onwards, there
      are 5 associated subdirectories that will be checked and created also if that cache mode is in use.
      </blockquote>
      <BR>
      </td>
   </tr>


   <tr class=admin>
      <td class=admin align=center> <BR>
         <form action="clearcache.php" method=post>
         <input type=hidden name="cachetype" value="SQL">
         <input type=submit value="Clear SQL Cache &gt;&gt;">
         </form>
         <form action="clearcache.php" method=post>
         <input type=hidden name="cachetype" value="RSS">
         <input type=submit value="Clear RSS Cache &gt;&gt;">
         </form>
         <form action="clearcache.php" method=post>
         <input type=hidden name="cachetype" value="OML">
         <input type=submit value="Clear OML Cache &gt;&gt;">
         </form>
         <form action="clearcache.php" method=post>
         <input type=hidden name="cachetype" value="Image">
         <input type=submit value="Clear Image Cache &gt;&gt;">
         </form>
         <form action="clearcache.php" method=post>
         <input type=hidden name="cachetype" value="Object">
         <input type=submit value="Rebuild Object Caches &gt;&gt;">
         </form>
         <form action="clearcache.php" method=post>
         <input type=hidden name="cachetype" value="Type">
         <input type=submit value="Rebuild Type Details Caches &gt;&gt;">
         </form>
	 <br>
	 <br>
         <form action="clearcache.php" method=post>
         <input type=hidden name="checkdbcache" value="Type">
         <input type=submit value="Check SQL Cache Directories Exists and Create If Required &gt;&gt;">
         </form>
	 <p>
	 Note: <?=$cache_type_in_use?> SQL Cache Structure in use.
	 </p>
      </td>
   </tr>

   </table>
   <?
}

function writeError($error)
{
   ?><BR><BR><font class=error><B><?=$error?></B></font><BR><BR><?
}


function writeConfirmClearBox()
{
   global $system_config;
   // No idea what this variable is so commented it out.
   //$time_posted_upper_limit = strtotime($_REQUEST['delete'])+$system_config->timezone_offset;
   if ($_REQUEST['cachetype'] == "Object") $requestedAction = "and Rebuild Object ";
   else $requestedAction = $_REQUEST['cachetype'];
   ?>
   <table align=center border=0>
   <form action="clearcache.php" method=post>
   <input type=hidden name="cachetype" value="<?=$_REQUEST['cachetype']?>">
   <tr>
      <td colspan=2 align=center><img src="graphics/caution.gif" align=middle><BR><BR><B>Are you sure you want to clear the <?=$_REQUEST['cachetype']?> Cache</B><BR><BR></td>
   </tr>

   <?
   if ($_REQUEST['cachetype'] == "SQL") {

       if (isset($_REQUEST['old_cache']) && $_REQUEST['old_cache'] == 'true') {
            ?> <input type=hidden name="old_cache" value="true"> <?
       } else {
       }
       ?>
       <tr>
       <td align=right>Editorial Cache 1</td><td align=center><input type=checkbox name="sql_cache_1" checked></td>
       </tr>
       <tr>
       <td align=right>Stories &amp; Comments Cache 2</td><td align=center><input type=checkbox name="sql_cache_2" checked></td>
       </tr>
       <tr>
       <td align=right>Editorial Locks Cache 3</td><td align=center><input type=checkbox name="sql_cache_3" checked></td>
       </tr>
       <tr>
       <td align=right>Objects Cache 4</td><td align=center><input type=checkbox name="sql_cache_4" checked></td>
       </tr>
       <tr>
       <td align=right>Statistics Cache 5</td><td align=center><input type=checkbox name="sql_cache_5" checked></td>
       </tr>
       <tr> <td colspan=2> &nbsp; </td> </tr>
       <?

       if (isset($_REQUEST['old_cache']) && $_REQUEST['old_cache'] == 'true') {
            ?> <input type=hidden name="old_cache" value="true"> <?
       } else {
            global $query_cache;
	    if ($query_cache->new_cache == true) {
               ?>
               <tr><td align=right><small>Delete pre Oscailt 3.3 cache directory only</small></td><td align=center><input type=checkbox name='old_cache' unchecked> </td> </tr>
	       <tr> <td colspan=2> &nbsp; </td> </tr>
               <?
	    }
       }
   }
   ?>
   <tr>
      <td align=right><input type=submit name=cancel value="&lt;&lt; Cancel"></td>
      <td><input type=submit name=confirm value="Clear <?=$requestedAction?> Cache &gt;&gt;"> </td>
   </tr>
   </form>
   </table>
   <?
}

ob_start();

if($editor_session->isSessionOpen())
{
   writeAdminHeader("viewsitelog.php?log_type=action","View Logs");

   if($editor_session->editor->allowedReadAccessTo("clearcache"))
   {
      if(isset($_REQUEST['cachetype']) && $_REQUEST['cachetype']!=null && isset($_REQUEST['confirm']) )
      {
         //perform delete
         if($editor_session->editor->allowedWriteAccessTo("clearcache"))
         {
            global $query_cache;
            $cleared=true;
            if($_REQUEST['cachetype']=="SQL")  {
		$cache_1 = "";
		$cache_2 = "";
		$cache_3 = "";
		$cache_4 = "";
		$cache_5 = "";
		if (isset($_REQUEST['sql_cache_1'])) $cache_1 = $_REQUEST['sql_cache_1'];
		if (isset($_REQUEST['sql_cache_2'])) $cache_2 = $_REQUEST['sql_cache_2'];
		if (isset($_REQUEST['sql_cache_3'])) $cache_3 = $_REQUEST['sql_cache_3'];
		if (isset($_REQUEST['sql_cache_4'])) $cache_4 = $_REQUEST['sql_cache_4'];
		if (isset($_REQUEST['sql_cache_5'])) $cache_5 = $_REQUEST['sql_cache_5'];

		if (isset($_REQUEST['old_cache']) && ($_REQUEST['old_cache']=='true' || $_REQUEST['old_cache']=='on')) {
                    echo("<p align=center><font class=editornotice><BR><B>Deleting pre Oscailt 3.3 ".$_REQUEST['cachetype']." Cache.</B></font></p>");

		    $saved_state = $query_cache->new_cache;
		    $query_cache->new_cache=false;
                }

		if ($cache_1 == 'on' && $cache_2 == 'on' && $cache_3 == 'on' && $cache_4 == 'on' && $cache_5 == 'on')
                    $query_cache->clearCache("sql", 0);
                else 
                {
                    if ($cache_1 == 'on' ) $query_cache->clearCache("sql", 1);
                    if ($cache_2 == 'on' ) $query_cache->clearCache("sql", 2);
                    if ($cache_3 == 'on' ) $query_cache->clearCache("sql", 3);
                    if ($cache_4 == 'on' ) $query_cache->clearCache("sql", 4);
                    if ($cache_5 == 'on' ) $query_cache->clearCache("sql", 5);
                }
		// Undocumented code to delete the old cache
		if (isset($_REQUEST['old_cache']) && ($_REQUEST['old_cache']=='true' || $_REQUEST['old_cache']=='on')) {
		    $query_cache->new_cache = $saved_state;
                }

            }
            else if($_REQUEST['cachetype']=="RSS") $query_cache->clearCache("rss");
            else if($_REQUEST['cachetype']=="OML") $query_cache->clearCache("oml",0);
            else if($_REQUEST['cachetype']=="Image")
            {
               $imagetool = new ImageTool();
               $imagetool->clearImageCache();
               logAction("", "all-images", "image", "cache clear");
            }
            elseif($_REQUEST['cachetype']=="Object")
            {
               include_once("objects/indyobjects/indydataobjects.inc");
               global $system_config, $redirectList;
               $redirectList->load();
               $obj_set = new indyObjectSet($system_config->xmltypedef_dir, $system_config->object_index_storage);
               $x = new indyObjectActionRequest();
               $obj_set->load(array("*"),array("*"), $x);
               $obj_set->rebuildCaches(array("*"));
               $obj_set->writeUserMessageBox();
               logAction("", "all-objects", "object", "site-recache");

            }
            elseif($_REQUEST['cachetype']=="Type")
            {
               include_once("objects/indyobjects/indydataobjects.inc");
               global $system_config;
               $obj_set = new indyObjectSet($system_config->xmltypedef_dir, $system_config->object_index_storage);
               $x = new indyObjectActionRequest();
               $obj_set->load(array("*"),array("*"), $x);
               $obj_set->supportedTypes->saveTypeDetailsCache();
               $obj_set->writeUserMessageBox();
               logAction("", "all-types", "type object", "type-recache");
            }
            else
            {
               $cleared=false;
               echo("<p align=center><font class=editornotice><BR><B>".$_REQUEST['cachetype']." Cache Type Is Unknown!</B></font></p>");
            }
            if($cleared) echo("<p align=center><font class=editornotice><BR><B>".$_REQUEST['cachetype']." Cache Cleared!</B></font></p>");
         }
         else $editor_session->writeNoWritePermissionError();
         writeClearForm();
      }
      else if(isset($_REQUEST['cachetype']) && $_REQUEST['cachetype']!=null && isset($_REQUEST['cancel']) )
      {
         writeClearForm();
      }
      else if(isset($_REQUEST['cachetype']) && $_REQUEST['cachetype']!=null)
      {
         writeConfirmClearBox();
      }
      else if(isset($_REQUEST['checkdbcache']) && $_REQUEST['checkdbcache'] !=null)
      {
         // Check it exists 
         if($editor_session->editor->allowedWriteAccessTo("clearcache"))
         {
            global $query_cache;

            $error_array = $query_cache->checkCacheDirs(true, true);
	    if (count($error_array) == 0 ) {
                echo("<p align=center><font class=editornotice><BR> All SQL Cache Directories exist.</font></p>");
            } else {
                echo("<p align=center><font class=editornotice><BR>");
                foreach ($error_array as $each_msg) {
                    echo $each_msg."<BR>";
                }
                echo("</font></p>");
            }
         }
         else $editor_session->writeNoWritePermissionError();
         writeClearForm();
      }
      else
      {
         writeClearForm();
      }
   }
   else $editor_session->writeNoReadPermissionError();
}
else $editor_session->writeNoSessionError();


require_once("adminfooter.inc");
?>