<?php/* * This file is part of Contao. * * (c) Leo Feyer * * @license LGPL-3.0-or-later */namespace Contao;use Symfony\Component\HttpFoundation\Response;/** * Class FrontendTemplate * * @property integer $id * @property string $keywords * @property string $content * @property array $sections * @property array $positions * @property array $matches * @property string $tag * * @author Leo Feyer <https://github.com/leofeyer> */class FrontendTemplate extends Template{ use FrontendTemplateTrait; /** * Unsued $_GET check * @var boolean */ protected $blnCheckRequest = false; /** * Add a hook to modify the template output * * @return string The template markup */ public function parse() { $strBuffer = parent::parse(); // HOOK: add custom parse filters if (isset($GLOBALS['TL_HOOKS']['parseFrontendTemplate']) && \is_array($GLOBALS['TL_HOOKS']['parseFrontendTemplate'])) { foreach ($GLOBALS['TL_HOOKS']['parseFrontendTemplate'] as $callback) { $this->import($callback[0]); $strBuffer = $this->{$callback[0]}->{$callback[1]}($strBuffer, $this->strTemplate, $this); } } return $strBuffer; } /** * Send the response to the client * * @param bool $blnCheckRequest If true, check for unused $_GET parameters * * @deprecated Deprecated since Contao 4.0, to be removed in Contao 5.0. * Use FrontendTemplate::getResponse() instead. */ public function output($blnCheckRequest=false) { $this->blnCheckRequest = $blnCheckRequest; parent::output(); } /** * Return a response object * * @param bool $blnCheckRequest If true, check for unused $_GET parameters * @param bool $blnForceCacheHeaders * * @return Response The response object */ public function getResponse($blnCheckRequest=false, $blnForceCacheHeaders=false) { $this->blnCheckRequest = $blnCheckRequest; $response = parent::getResponse(); if ($blnForceCacheHeaders || 0 === strncmp('fe_', $this->strTemplate, 3)) { return $this->setCacheHeaders($response); } return $response; } /** * Compile the template * * @throws \UnusedArgumentsException If there are unused $_GET parameters * * @internal Do not call this method in your code. It will be made private in Contao 5.0. */ protected function compile() { $this->keywords = ''; $arrKeywords = StringUtil::trimsplit(',', $GLOBALS['TL_KEYWORDS'] ?? ''); // Add the meta keywords if (isset($arrKeywords[0])) { $this->keywords = str_replace(array("\n", "\r", '"'), array(' ', '', ''), implode(', ', array_unique($arrKeywords))); } // Parse the template $this->strBuffer = $this->parse(); // HOOK: add custom output filters if (isset($GLOBALS['TL_HOOKS']['outputFrontendTemplate']) && \is_array($GLOBALS['TL_HOOKS']['outputFrontendTemplate'])) { foreach ($GLOBALS['TL_HOOKS']['outputFrontendTemplate'] as $callback) { $this->import($callback[0]); $this->strBuffer = $this->{$callback[0]}->{$callback[1]}($this->strBuffer, $this->strTemplate); } } // Replace insert tags $this->strBuffer = $this->replaceInsertTags($this->strBuffer); $this->strBuffer = $this->replaceDynamicScriptTags($this->strBuffer); // see #4203 // HOOK: allow to modify the compiled markup (see #4291) if (isset($GLOBALS['TL_HOOKS']['modifyFrontendPage']) && \is_array($GLOBALS['TL_HOOKS']['modifyFrontendPage'])) { foreach ($GLOBALS['TL_HOOKS']['modifyFrontendPage'] as $callback) { $this->import($callback[0]); $this->strBuffer = $this->{$callback[0]}->{$callback[1]}($this->strBuffer, $this->strTemplate); } } // Check whether all $_GET parameters have been used (see #4277) if ($this->blnCheckRequest && Input::hasUnusedGet()) { throw new \UnusedArgumentsException('Unused arguments: ' . implode(', ', Input::getUnusedGet())); } /** @var PageModel|null $objPage */ global $objPage; // Minify the markup if ($objPage !== null && $objPage->minifyMarkup) { $this->strBuffer = $this->minifyHtml($this->strBuffer); } // Replace literal insert tags (see #670, #3249) $this->strBuffer = preg_replace_callback( '/<script[^>]*>.*?<\/script[^>]*>|\[[{}]]/is', static function ($matches) { return $matches[0][0] === '<' ? $matches[0] : '&#' . \ord($matches[0][1]) . ';&#' . \ord($matches[0][1]) . ';'; }, $this->strBuffer ); parent::compile(); } /** * Set the cache headers according to the page settings. * * @param Response $response The response object * * @return Response The response object */ private function setCacheHeaders(Response $response) { /** @var PageModel $objPage */ global $objPage; // Do not cache the response if caching was not configured at all or disabled explicitly if (($objPage->cache === false || $objPage->cache < 1) && ($objPage->clientCache === false || $objPage->clientCache < 1)) { $response->headers->set('Cache-Control', 'no-cache, no-store'); return $response->setPrivate(); // Make sure the response is private } // Private cache if ($objPage->clientCache > 0) { $response->setMaxAge($objPage->clientCache); $response->setPrivate(); // Make sure the response is private } // Shared cache if ($objPage->cache > 0) { $response->setSharedMaxAge($objPage->cache); // Automatically sets the response to public // We vary on cookies if a response is cacheable by the shared // cache, so a reverse proxy does not load a response from cache if // the _request_ contains a cookie. // // This DOES NOT mean that we generate a cache entry for every // response containing a cookie! Responses with cookies will always // be private (@see Contao\CoreBundle\EventListener\MakeResponsePrivateListener). // // However, we want to be able to force the reverse proxy to load a // response from cache, even if the request contains a cookie – in // case the admin has configured to do so. A typical use case would // be serving public pages from cache to logged in members. if (!$objPage->alwaysLoadFromCache) { $response->setVary(array('Cookie')); } // Tag the page (see #2137) if (System::getContainer()->has('fos_http_cache.http.symfony_response_tagger')) { $responseTagger = System::getContainer()->get('fos_http_cache.http.symfony_response_tagger'); $responseTagger->addTags(array('contao.db.tl_page.' . $objPage->id)); } } return $response; }}class_alias(FrontendTemplate::class, 'FrontendTemplate');