/**
* Get page key from URI, browser (version), params (cookie params)
*
* @return mixed NULL if devmode/noncache or string key code
*/
public static function getPageKey()
{
static $key = null;
if ($key) {
return $key;
}
// No cache in devmode
$t3cache = T3Cache::getT3Cache();
if ($t3cache->_devmode) {
return null;
}
// No cache when disable T3 cache
$config = T3Common::get_template_based_params();
if ($config->get('cache', 0) == 0) {
return null;
}
// TODO: need to move in cache page code at the end of onAfterRender
$mainframe = JFactory::getApplication();
$messages = $mainframe->getMessageQueue();
// Ignore cache when there're some message
if (is_array($messages) && count($messages)) {
return null;
}
// If user log-in, ignore cache
$user = JFactory::getUser();
if (!$user->get('guest') || $_SERVER['REQUEST_METHOD'] != 'GET') {
return null;
}
// If ie6, ignore cache
$isIE6 = T3Template::isIE6();
if ($isIE6) {
return null;
}
// Don't cache when offline
$cfg = JFactory::getConfig();
if ($cfg->get('offline')) {
return null;
}
$uri = JRequest::getURI();
//$browser = T3Common::getBrowserSortName() . "-" . T3Common::getBrowserMajorVersion();
$mobile = T3Common::mobile_device_detect();
$params = T3Parameter::getInstance();
$cparams = '';
foreach ($params->_params_cookie as $k => $v) {
$cparams .= $k . "=" . $v . '&';
}
//$key = "page - URI: $uri; Browser: $browser; Params: $cparams";
$key = "page - URI: {$uri}; Mobile: {$mobile}; Params: {$cparams}";
//T3Common::log($key . ' ' . T3Common::getBrowserSortName() . "-" . T3Common::getBrowserMajorVersion());
return $key;
}
function t3_init()
{
t3import('core.parameter');
t3import('core.extendable');
t3import('core.template');
t3import('core.basetemplate');
t3import('core.cache');
t3import('core.head');
t3import('core.hook');
// Remove JDocumentHTML for compatible J1.6 & J1.7
// if (!class_exists ('JDocumentHTML', false)) t3import ('core.joomla.documenthtml');
if (!class_exists('JView', false)) {
t3import('core.joomla.view');
}
if (!class_exists('JModuleHelper', false)) {
t3import('core.joomla.modulehelper');
}
// if (! class_exists('JPagination', false)) t3import('core.joomla.pagination');
//Load template language
$this->loadLanguage('tpl_' . T3_ACTIVE_TEMPLATE, JPATH_SITE);
$params = T3Common::get_template_based_params();
//instance cache object.
$devmode = $params ? $params->get('devmode', '0') == '1' : false;
$t3cache = T3Cache::getT3Cache($devmode);
//Check if enable T3 info mode. Enable by default (if not set)
if ($params->get('infomode', 1) == 1) {
if (!JRequest::getCmd('t3info') && JRequest::getCmd('tp') && JComponentHelper::getParams('com_templates')->get('template_positions_display')) {
JRequest::setVar('t3info', JRequest::getCmd('tp'));
}
}
$key = T3Cache::getPageKey();
$user =& JFactory::getUser();
$data = null;
if ($devmode || JRequest::getCmd('cache') == 'no') {
$t3cache->setCaching(false);
JResponse::allowCache(false);
} else {
$t3cache->setCaching(true);
JResponse::allowCache(true);
//T3Common::log('allow cache');
}
// Check ie6
$isIE6 = T3Template::isIE6();
// Get cache
$data = $t3cache->get($key);
if ($data && !$isIE6) {
$mainframe = JFactory::getApplication();
// Check HTTP header
$if_modified_since = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) : false;
$if_none_match = isset($_SERVER['HTTP_IF_NONE_MATCH']) ? stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) : false;
$cache_time = (int) substr($data, 0, 20);
$etag = md5($key);
if ($if_modified_since && $if_none_match && $if_modified_since == $cache_time && $if_none_match == $etag) {
header('HTTP/1.x 304 Not Modified', true);
$mainframe->close();
}
$data = JString::substr($data, 20);
// Check cached data
if (!preg_match('#<jdoc:include\\ type="([^"]+)" (.*)\\/>#iU', $data)) {
$token = JUtility::getToken();
$search = '#<input type="hidden" name="[0-9a-f]{32}" value="1" />#';
$replacement = '<input type="hidden" name="' . $token . '" value="1" />';
$data = preg_replace($search, $replacement, $data);
JResponse::setHeader('Last-Modified', gmdate('D, d M Y H:i:s', $cache_time) . ' GMT', true);
JResponse::setHeader('ETag', $etag, true);
JResponse::setBody($data);
echo JResponse::toString($mainframe->getCfg('gzip'));
if (JDEBUG) {
global $_PROFILER;
$_PROFILER->mark('afterCache');
echo implode('', $_PROFILER->getBuffer());
}
$mainframe->close();
}
}
//Preload template
t3import('core.preload');
$preload = T3Preload::getInstance();
$preload->load();
$doc =& JFactory::getDocument();
$t3 = T3Template::getInstance($doc);
$t3->_html = $data;
// Disable joomla cache when browsing by device
$device = T3Common::mobile_device_detect();
if ($device !== 'false') {
$conf = JFactory::getConfig();
$conf->set('caching', 0);
}
// Separate cache when browsing in each device
/*
$app = JFactory::getApplication();
$registeredurlparams = $app->get('registeredurlparams');
if (empty($registeredurlparams)) {
$registeredurlparams = new stdClass;
}
$registeredurlparams->device = 'CMD';
$app->set('registeredurlparams', $registeredurlparams);
JRequest::setVar('device', T3Common::mobile_device_detect());
*/
}
