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<?php |
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namespace SilverStripe\StaticPublishQueue; |
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use SilverStripe\Control\Director; |
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use SilverStripe\Control\HTTPApplication; |
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use SilverStripe\Control\HTTPRequestBuilder; |
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use SilverStripe\Control\HTTPResponse; |
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use SilverStripe\Control\HTTPResponse_Exception; |
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use SilverStripe\Core\Config\Configurable; |
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use SilverStripe\Core\CoreKernel; |
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use SilverStripe\Core\Environment; |
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use SilverStripe\Core\Injector\Injectable; |
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use SilverStripe\ORM\DataObject; |
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use SilverStripe\ORM\FieldType\DBDatetime; |
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use SilverStripe\ORM\FieldType\DBField; |
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use SilverStripe\StaticPublishQueue\Contract\StaticPublisher; |
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use SilverStripe\View\ArrayData; |
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use SilverStripe\View\Requirements; |
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use SilverStripe\View\Requirements_Backend; |
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use SilverStripe\View\SSViewer; |
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abstract class Publisher implements StaticPublisher |
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{ |
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use Injectable; |
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use Configurable; |
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/** |
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* @var array |
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* @config |
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*/ |
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private static $static_publisher_themes = []; |
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/** |
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* avoid caching any pages with name"SecurityID" - an indication that a |
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* form my be present that requires a fresh SecurityID |
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* @var bool |
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* @config |
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*/ |
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private static $lazy_form_recognition = false; |
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/** |
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* @config |
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* |
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* @var bool Use domain based caching (put cache files into a domain subfolder) |
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* This must be true if you are using this with the "subsites" module. |
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* Please note that this form of caching requires all URLs to be provided absolute |
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* (not relative to the webroot) via {@link SiteTree->AbsoluteLink()}. |
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*/ |
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private static $domain_based_caching = false; |
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/** |
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* @config |
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* |
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* @var bool Add a timestamp to the statically published output for HTML files |
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*/ |
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private static $add_timestamp = false; |
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/** |
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* @param string $url |
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* |
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* @return HTTPResponse |
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*/ |
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public function generatePageResponse($url) |
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{ |
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if (Director::is_relative_url($url)) { |
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$url = Director::absoluteURL($url); |
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} |
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$urlParts = parse_url($url); |
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if (!empty($urlParts['query'])) { |
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parse_str($urlParts['query'], $getVars); |
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} else { |
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$getVars = []; |
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} |
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// back up requirements backend |
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$origRequirements = Requirements::backend(); |
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Requirements::set_backend(Requirements_Backend::create()); |
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$origThemes = SSViewer::get_themes(); |
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$staticThemes = self::config()->get('static_publisher_themes'); |
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if ($staticThemes) { |
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SSViewer::set_themes($staticThemes); |
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} else { |
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// get the themes raw from config to prevent the "running from the CMS" problem where no themes are live |
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$rawThemes = SSViewer::config()->uninherited('themes'); |
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SSViewer::set_themes($rawThemes); |
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} |
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try { |
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$ssl = Environment::getEnv('SS_STATIC_FORCE_SSL'); |
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if (is_null($ssl)) { |
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$ssl = $urlParts['scheme'] == 'https' ? true : false; |
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} |
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// try to add all the server vars that would be needed to create a static cache |
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$request = HTTPRequestBuilder::createFromVariables( |
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[ |
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'_SERVER' => [ |
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'REQUEST_URI' => isset($urlParts['path']) ? $urlParts['path'] : '', |
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'REQUEST_METHOD' => 'GET', |
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'REMOTE_ADDR' => '127.0.0.1', |
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'HTTPS' => $ssl ? 'on' : 'off', |
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'QUERY_STRING' => isset($urlParts['query']) ? $urlParts['query'] : '', |
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'REQUEST_TIME' => DBDatetime::now()->getTimestamp(), |
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'REQUEST_TIME_FLOAT' => (float) DBDatetime::now()->getTimestamp(), |
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'HTTP_HOST' => $urlParts['host'] . (isset($urlParts['port']) ? ':' . $urlParts['port'] : ''), |
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'HTTP_USER_AGENT' => 'silverstripe/staticpublishqueue', |
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], |
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'_GET' => $getVars, |
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'_POST' => [], |
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], |
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'' |
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); |
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$app = $this->getHTTPApplication(); |
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$response = $app->handle($request); |
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if ($this->config()->get('add_timestamp')) { |
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$response->setBody( |
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str_replace( |
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'</html>', |
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'<!-- ' . DBDateTime::now()->Full() . " -->\n</html>", |
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$response->getBody() |
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) |
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); |
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} |
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} catch (HTTPResponse_Exception $e) { |
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$response = $e->getResponse(); |
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} finally { |
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// restore backends |
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SSViewer::set_themes($origThemes); |
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Requirements::set_backend($origRequirements); |
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DataObject::singleton()->flushCache(); |
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} |
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return $response; |
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} |
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/** |
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* @return HTTPApplication |
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*/ |
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protected function getHTTPApplication() |
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{ |
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$kernel = new CoreKernel(BASE_PATH); |
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return new HTTPApplication($kernel); |
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} |
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/** |
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* Generate the templated content for a PHP script that can serve up the |
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* given piece of content with the given age and expiry. |
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* |
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* @param HTTPResponse $response |
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* |
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* @return string |
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*/ |
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protected function generatePHPCacheFile($response) |
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{ |
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$cacheConfig = [ |
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'responseCode' => $response->getStatusCode(), |
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'headers' => [], |
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]; |
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foreach ($response->getHeaders() as $header => $value) { |
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if (!in_array($header, ['cache-control'], true)) { |
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$cacheConfig['headers'][] = sprintf('%s: %s', $header, $value); |
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} |
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} |
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return "<?php\n\nreturn " . var_export($cacheConfig, true) . ';'; |
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} |
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/** |
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* @param string $destination |
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* |
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* @return string |
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*/ |
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protected function generateHTMLCacheRedirection($destination) |
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{ |
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return SSViewer::execute_template( |
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'SilverStripe\\StaticPublishQueue\\HTMLRedirection', |
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ArrayData::create([ |
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'URL' => DBField::create_field('Varchar', $destination), |
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]) |
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); |
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} |
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} |
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