/**
* Purge urls from database (and cache)
* either all automatic, or according to current
* sef url list page select options as stored in
* in session
* @param unknown_type $type
*/
public function purge($type = 'auto')
{
// make sure we use latest user state
$this->_updateContextData();
// call the appropriate sub-method to get the db query
$methodName = '_getPurgeQuery' . ucfirst($type);
if (is_callable(array($this, $methodName))) {
$deleteQuery = $this->{$methodName}();
} else {
$this->setError('Invalid method call _purge' . $type);
return;
}
// then run the query
$this->_db->setQuery($deleteQuery);
$this->_db->query();
// store error
$error = $this->_db->getErrorNum();
if (!empty($error)) {
$this->setError('Internal database error # ' . $error);
}
// delete from cache : we delete the whole cache anyway, except for 404 pages
// which are not in the cache
if ($type != '404') {
Sh404sefHelperCache::purge();
}
// reset limit and limitstart variables, to avoid
// issue when displaying again results
$this->_setState('limitstart', 0);
$this->_setState('limit', 0);
// reprocess custom urls, checking there is still at least one per group
// of identical SEF url with a rank = 0
// as the "main" url for this group was possibly deleted during the purge
$query = 'select ?? from (select * from ?? where ?? <> ? order by ?? asc) as tmp_table group by ??';
$nameQuoted = array('id', '#__redirection', 'dateadd', 'rank', 'oldurl');
$quoted = array('0000-00-00');
try {
// select custom with lowest rank
$customs = Sh404sefHelperDb::queryQuote($query, $nameQuoted, $quoted)->loadResultArray();
// make sure there is at least one of those with rank = 0
Sh404sefHelperDb::updateIn('#__redirection', array('rank' => 0), 'id', $customs);
} catch (Sh404sefExceptionDefault $e) {
$this->setError('Internal database error # ' . $e->getMessage());
}
}
protected function _do404(&$uri)
{
if (self::$requestParsed) {
return array();
}
// get config objects
$pageInfo =& Sh404sefFactory::getPageInfo();
$sefConfig = Sh404sefFactory::getConfig();
// store the status
$pageInfo->httpStatus = 404;
// request path
$reqPath = $uri->getPath();
// optionnally log the 404 details
if ($sefConfig->shLog404Errors && !empty($reqPath)) {
try {
$record = Sh404sefHelperDb::selectObject('#__sh404sef_urls', '*', array('oldurl' => $reqPath));
if (!empty($record)) {
// we have, so update counter
Sh404sefHelperDb::queryQuote('update ?? set cpt=(cpt+1) where ?? = ?', array('#__sh404sef_urls', 'oldurl'), array($reqPath));
} else {
// record the 404
Sh404sefHelperDb::insert('#__sh404sef_urls', array('cpt' => 1, 'rank' => 0, 'oldurl' => $reqPath, 'newurl' => '', 'dateadd' => Sh404sefHelperDate::getUTCNow('Y-m-d')));
}
// add more details about 404 into security log file
if ($sefConfig->shSecEnableSecurity && $sefConfig->shSecLogAttacks) {
$sep = "\t";
$logData = date('Y-m-d') . $sep . date('H:i:s') . $sep . 'Page not found (404)' . $sep . $_SERVER['REMOTE_ADDR'] . $sep;
$logData .= getHostByAddr($_SERVER['REMOTE_ADDR']) . $sep;
$userAgent = empty($_SERVER['HTTP_USER_AGENT']) ? 'No user agent' : $_SERVER['HTTP_USER_AGENT'];
$logData .= $userAgent . $sep . $_SERVER['REQUEST_METHOD'] . $sep . $_SERVER['REQUEST_URI'];
$logData .= empty($_SERVER['HTTP_REFERER']) ? "\n" : $sep . $_SERVER['HTTP_REFERER'] . "\n";
shLogToSecFile($logData);
}
} catch (Sh404sefExceptionDefault $e) {
_log(__METHOD__ . '/' . __LINE__ . '/' . __CLASS__ . ': Database error: ' . $e->getMessage());
}
}
// display the error page
$vars['option'] = 'com_content';
$vars['view'] = 'article';
// use provided Itemid
if (empty($sefConfig->shPageNotFoundItemid)) {
$shHomePage = JFactory::getApplication()->getMenu()->getDefault();
$vars['Itemid'] = empty($shHomePage) ? null : $shHomePage->id;
} else {
$vars['Itemid'] = $sefConfig->shPageNotFoundItemid;
}
// user picked our default 404 error page, read its id from DB
if ($sefConfig->page404 == '0') {
try {
$requestedlanguageTag = JFactory::getLanguage()->getTag();
$languageTag = JRequest::getString(JUtility::getHash('language'), null, 'cookie');
if (!empty($languageTag)) {
$vars['lang'] = $languageTag;
}
$ids = Sh404sefHelperDb::queryQuoteOnly('select ?? from ?? where ?? = ? and ?? in ( ?, ?) order by ?? desc', array('id', '#__content', 'title', 'language', 'language'), array('__404__', $languageTag, '*'))->eLoadResultArray();
$id = empty($ids[0]) ? null : $ids[0];
} catch (Sh404sefExceptionDefault $e) {
_log(__METHOD__ . '/' . __LINE__ . '/' . __CLASS__ . ': Database error: ' . $e->getMessage());
}
if (empty($id)) {
JError::raiseError(404, JText::_('Component Not Found') . ' (' . $pageInfo->getDefaultLiveSite() . '/' . $uri->getPath() . ')');
}
} else {
$id = $sefConfig->page404;
}
$vars['id'] = $id;
$uri = new JURI($pageInfo->getDefaultLiveSite() . '/index.php?' . 'option=com_content&view=article&id=' . $id . (empty($vars['Itemid']) ? '' : '&Itemid=' . $vars['Itemid']) . (empty($vars['lang']) ? '' : '&lang=' . shGetIsoCodeFromName($vars['lang'])));
$tmpl = str_replace('.php', '', $sefConfig->error404SubTemplate);
if (!empty($tmpl)) {
$vars['tmpl'] = $tmpl;
}
// and prepare the item for display
$menus =& JFactory::getApplication()->getMenu();
$menuItem = $menus->getItem($vars['Itemid']);
if (!empty($menuItem)) {
$menus->setActive($vars['Itemid']);
} else {
$menuItem = $menus->getDefault();
}
if (!empty($menuItem->params)) {
$disableParams = array('show_title', 'show_category', 'show_author', 'show_create_date', 'show_modify_date', 'show_publish_date', 'show_vote', 'show_readmore', 'show_icons', 'show_hits', 'show_feed_link', 'show_page_heading');
foreach ($disableParams as $p) {
$menuItem->params->set($p, 0);
}
//set a custom page title
$menuItem->params->set('page_title', htmlspecialchars($uri->get('_uri')));
}
// set the menu query array, J! will use that for breadcrumb
$menuItem->query = $vars;
// throw 404 http return code, and prepare for page display
if (!headers_sent()) {
JResponse::setHeader('status', '404 NOT FOUND');
// custom error page, faster than loading Joomla 404 page. Not recommended though, why not show
// your site ?
if (is_readable(sh404SEF_FRONT_ABS_PATH . '404-Not-Found.tpl.html')) {
$errorPage = file_get_contents(sh404SEF_FRONT_ABS_PATH . '404-Not-Found.tpl.html');
if ($errorPage !== false) {
$errorPage = str_replace('%sh404SEF_404_URL%', ' (' . $pageInfo->getDefaultLiveSite() . '/' . $uri->getPath() . ')', $errorPage);
$errorPage = str_replace('%sh404SEF_404_SITE_URL%', $pageInfo->getDefaultLiveSite(), $errorPage);
$errorPage = str_replace('%sh404SEF_404_SITE_NAME%', JFactory::getApplication()->getCfg('sitename'), $errorPage);
echo $errorPage;
die;
}
}
} else {
_log('Headers already sent before getting control on 404 page - message displayed');
$shUri = new JUri();
$shOriginalUri = new JURI();
$url = shSefRelToAbs($pageInfo->getDefaultLiveSite() . "/index.php?" . $_SERVER['QUERY_STRING'], '', $shUri, $shOriginalUri);
JError::RaiseError(500, "<br />SH404SEF : headers were already sent when I got control!<br />This is not necessarily a sh404sef error. It may have been caused by any of your extensions or even Joomla itself. If there is no error message above this one, providing more details, then you may look inside the error log file of your web server for an indication of what may be breaking things up.<br />URL=" . $url . '<br />');
}
return $vars;
}
