nextcloud / server

lib/private/legacy/template.php

Indentation +353 added lines, -353 removed lines

@@ -44,357 +44,357 @@
  */
 class OC_Template extends \OC\Template\Base {
 
-	/** @var string */
-	private $renderAs; // Create a full page?
-
-	/** @var string */
-	private $path; // The path to the template
-
-	/** @var array */
-	private $headers = array(); //custom headers
-
-	/** @var string */
-	protected $app; // app id
-
-	protected static $initTemplateEngineFirstRun = true;
-
-	/**
-	 * Constructor
-	 *
-	 * @param string $app app providing the template
-	 * @param string $name of the template file (without suffix)
-	 * @param string $renderAs If $renderAs is set, OC_Template will try to
-	 *                         produce a full page in the according layout. For
-	 *                         now, $renderAs can be set to "guest", "user" or
-	 *                         "admin".
-	 * @param bool $registerCall = true
-	 */
-	public function __construct( $app, $name, $renderAs = "", $registerCall = true ) {
-		// Read the selected theme from the config file
-		self::initTemplateEngine($renderAs);
-
-		$theme = OC_Util::getTheme();
-
-		$requestToken = (OC::$server->getSession() && $registerCall) ? \OCP\Util::callRegister() : '';
-
-		$parts = explode('/', $app); // fix translation when app is something like core/lostpassword
-		$l10n = \OC::$server->getL10N($parts[0]);
-		$themeDefaults = \OC::$server->getThemingDefaults();
-
-		list($path, $template) = $this->findTemplate($theme, $app, $name);
-
-		// Set the private data
-		$this->renderAs = $renderAs;
-		$this->path = $path;
-		$this->app = $app;
-
-		parent::__construct($template, $requestToken, $l10n, $themeDefaults);
-	}
-
-	/**
-	 * @param string $renderAs
-	 */
-	public static function initTemplateEngine($renderAs) {
-		if (self::$initTemplateEngineFirstRun){
-
-			//apps that started before the template initialization can load their own scripts/styles
-			//so to make sure this scripts/styles here are loaded first we use OC_Util::addScript() with $prepend=true
-			//meaning the last script/style in this list will be loaded first
-			if (\OC::$server->getSystemConfig()->getValue ('installed', false) && $renderAs !== 'error' && !\OCP\Util::needUpgrade()) {
-				if (\OC::$server->getConfig ()->getAppValue ( 'core', 'backgroundjobs_mode', 'ajax' ) == 'ajax') {
-					OC_Util::addScript ( 'backgroundjobs', null, true );
-				}
-			}
-
-			OC_Util::addStyle("tooltip",null,true);
-			OC_Util::addStyle('jquery-ui-fixes',null,true);
-			OC_Util::addVendorStyle('jquery-ui/themes/base/jquery-ui',null,true);
-			OC_Util::addStyle("mobile",null,true);
-			OC_Util::addStyle("multiselect",null,true);
-			OC_Util::addStyle("fixes",null,true);
-			OC_Util::addStyle("global",null,true);
-			OC_Util::addStyle("apps",null,true);
-			OC_Util::addStyle("fonts",null,true);
-			OC_Util::addStyle("icons",null,true);
-			OC_Util::addStyle("actions",null,true);
-			OC_Util::addStyle("header",null,true);
-			OC_Util::addStyle("inputs");
-			OC_Util::addStyle("styles",null,true);
-
-			// avatars
-			\OC_Util::addScript('jquery.avatar', null, true);
-			\OC_Util::addScript('placeholder', null, true);
-
-			OC_Util::addVendorScript('select2/select2');
-			OC_Util::addVendorStyle('select2/select2', null, true);
-			OC_Util::addScript('select2-toggleselect');
-
-			OC_Util::addScript('oc-backbone', null, true);
-			OC_Util::addVendorScript('core', 'backbone/backbone', true);
-			OC_Util::addVendorScript('snapjs/dist/latest/snap', null, true);
-			OC_Util::addScript('mimetypelist', null, true);
-			OC_Util::addScript('mimetype', null, true);
-			OC_Util::addScript("apps", null, true);
-			OC_Util::addScript("oc-requesttoken", null, true);
-			OC_Util::addScript('search', 'search', true);
-			OC_Util::addScript("config", null, true);
-			OC_Util::addScript("public/appconfig", null, true);
-			OC_Util::addScript("eventsource", null, true);
-			OC_Util::addScript("octemplate", null, true);
-			OC_Util::addTranslations("core", null, true);
-			OC_Util::addScript("l10n", null, true);
-			OC_Util::addScript("js", null, true);
-			OC_Util::addScript("oc-dialogs", null, true);
-			OC_Util::addScript("jquery.ocdialog", null, true);
-			OC_Util::addScript("jquery-ui-fixes");
-			OC_Util::addStyle("jquery.ocdialog");
-			OC_Util::addScript('files/fileinfo');
-			OC_Util::addScript('files/client');
-
-			// Add the stuff we need always
-			// following logic will import all vendor libraries that are
-			// specified in core/js/core.json
-			$fileContent = file_get_contents(OC::$SERVERROOT . '/core/js/core.json');
-			if($fileContent !== false) {
-				$coreDependencies = json_decode($fileContent, true);
-				foreach(array_reverse($coreDependencies['vendor']) as $vendorLibrary) {
-					// remove trailing ".js" as addVendorScript will append it
-					OC_Util::addVendorScript(
-							substr($vendorLibrary, 0, strlen($vendorLibrary) - 3),null,true);
-				}
-			} else {
-				throw new \Exception('Cannot read core/js/core.json');
-			}
-
-			if (\OC::$server->getRequest()->isUserAgent([\OC\AppFramework\Http\Request::USER_AGENT_IE])) {
-				// polyfill for btoa/atob for IE friends
-				OC_Util::addVendorScript('base64/base64');
-				// shim for the davclient.js library
-				\OCP\Util::addScript('files/iedavclient');
-			}
-
-			self::$initTemplateEngineFirstRun = false;
-		}
-
-	}
-
-
-	/**
-	 * find the template with the given name
-	 * @param string $name of the template file (without suffix)
-	 *
-	 * Will select the template file for the selected theme.
-	 * Checking all the possible locations.
-	 * @param string $theme
-	 * @param string $app
-	 * @return string[]
-	 */
-	protected function findTemplate($theme, $app, $name) {
-		// Check if it is a app template or not.
-		if( $app !== '' ) {
-			$dirs = $this->getAppTemplateDirs($theme, $app, OC::$SERVERROOT, OC_App::getAppPath($app));
-		} else {
-			$dirs = $this->getCoreTemplateDirs($theme, OC::$SERVERROOT);
-		}
-		$locator = new \OC\Template\TemplateFileLocator( $dirs );
-		$template = $locator->find($name);
-		$path = $locator->getPath();
-		return array($path, $template);
-	}
-
-	/**
-	 * Add a custom element to the header
-	 * @param string $tag tag name of the element
-	 * @param array $attributes array of attributes for the element
-	 * @param string $text the text content for the element. If $text is null then the
-	 * element will be written as empty element. So use "" to get a closing tag.
-	 */
-	public function addHeader($tag, $attributes, $text=null) {
-		$this->headers[]= array(
-			'tag' => $tag,
-			'attributes' => $attributes,
-			'text' => $text
-		);
-	}
-
-	/**
-	 * Process the template
-	 * @return boolean|string
-	 *
-	 * This function process the template. If $this->renderAs is set, it
-	 * will produce a full page.
-	 */
-	public function fetchPage($additionalParams = null) {
-		$data = parent::fetchPage($additionalParams);
-
-		if( $this->renderAs ) {
-			$page = new TemplateLayout($this->renderAs, $this->app);
-
-			// Add custom headers
-			$headers = '';
-			foreach(OC_Util::$headers as $header) {
-				$headers .= '<'.\OCP\Util::sanitizeHTML($header['tag']);
-				foreach($header['attributes'] as $name=>$value) {
-					$headers .= ' '.\OCP\Util::sanitizeHTML($name).'="'.\OCP\Util::sanitizeHTML($value).'"';
-				}
-				if ($header['text'] !== null) {
-					$headers .= '>'.\OCP\Util::sanitizeHTML($header['text']).'</'.\OCP\Util::sanitizeHTML($header['tag']).'>';
-				} else {
-					$headers .= '/>';
-				}
-			}
-
-			$page->assign('headers', $headers);
-
-			$page->assign('content', $data);
-			return $page->fetchPage();
-		}
-
-		return $data;
-	}
-
-	/**
-	 * Include template
-	 *
-	 * @param string $file
-	 * @param array|null $additionalParams
-	 * @return string returns content of included template
-	 *
-	 * Includes another template. use <?php echo $this->inc('template'); ?> to
-	 * do this.
-	 */
-	public function inc( $file, $additionalParams = null ) {
-		return $this->load($this->path.$file.'.php', $additionalParams);
-	}
-
-	/**
-	 * Shortcut to print a simple page for users
-	 * @param string $application The application we render the template for
-	 * @param string $name Name of the template
-	 * @param array $parameters Parameters for the template
-	 * @return boolean|null
-	 */
-	public static function printUserPage( $application, $name, $parameters = array() ) {
-		$content = new OC_Template( $application, $name, "user" );
-		foreach( $parameters as $key => $value ) {
-			$content->assign( $key, $value );
-		}
-		print $content->printPage();
-	}
-
-	/**
-	 * Shortcut to print a simple page for admins
-	 * @param string $application The application we render the template for
-	 * @param string $name Name of the template
-	 * @param array $parameters Parameters for the template
-	 * @return bool
-	 */
-	public static function printAdminPage( $application, $name, $parameters = array() ) {
-		$content = new OC_Template( $application, $name, "admin" );
-		foreach( $parameters as $key => $value ) {
-			$content->assign( $key, $value );
-		}
-		return $content->printPage();
-	}
-
-	/**
-	 * Shortcut to print a simple page for guests
-	 * @param string $application The application we render the template for
-	 * @param string $name Name of the template
-	 * @param array|string $parameters Parameters for the template
-	 * @return bool
-	 */
-	public static function printGuestPage( $application, $name, $parameters = array() ) {
-		$content = new OC_Template( $application, $name, "guest" );
-		foreach( $parameters as $key => $value ) {
-			$content->assign( $key, $value );
-		}
-		return $content->printPage();
-	}
-
-	/**
-		* Print a fatal error page and terminates the script
-		* @param string $error_msg The error message to show
-		* @param string $hint An optional hint message - needs to be properly escaped
-		*/
-	public static function printErrorPage( $error_msg, $hint = '' ) {
-		if ($error_msg === $hint) {
-			// If the hint is the same as the message there is no need to display it twice.
-			$hint = '';
-		}
-
-		try {
-			$content = new \OC_Template( '', 'error', 'error', false );
-			$errors = array(array('error' => $error_msg, 'hint' => $hint));
-			$content->assign( 'errors', $errors );
-			$content->printPage();
-		} catch (\Exception $e) {
-			$logger = \OC::$server->getLogger();
-			$logger->error("$error_msg $hint", ['app' => 'core']);
-			$logger->logException($e, ['app' => 'core']);
-
-			header(self::getHttpProtocol() . ' 500 Internal Server Error');
-			header('Content-Type: text/plain; charset=utf-8');
-			print("$error_msg $hint");
-		}
-		die();
-	}
-
-	/**
-	 * print error page using Exception details
-	 * @param Exception | Throwable $exception
-	 */
-	public static function printExceptionErrorPage($exception, $fetchPage = false) {
-		try {
-			$request = \OC::$server->getRequest();
-			$content = new \OC_Template('', 'exception', 'error', false);
-			$content->assign('errorClass', get_class($exception));
-			$content->assign('errorMsg', $exception->getMessage());
-			$content->assign('errorCode', $exception->getCode());
-			$content->assign('file', $exception->getFile());
-			$content->assign('line', $exception->getLine());
-			$content->assign('trace', $exception->getTraceAsString());
-			$content->assign('debugMode', \OC::$server->getSystemConfig()->getValue('debug', false));
-			$content->assign('remoteAddr', $request->getRemoteAddress());
-			$content->assign('requestID', $request->getId());
-			if ($fetchPage) {
-				return $content->fetchPage();
-			}
-			$content->printPage();
-		} catch (\Exception $e) {
-			$logger = \OC::$server->getLogger();
-			$logger->logException($exception, ['app' => 'core']);
-			$logger->logException($e, ['app' => 'core']);
-
-			header(self::getHttpProtocol() . ' 500 Internal Server Error');
-			header('Content-Type: text/plain; charset=utf-8');
-			print("Internal Server Error\n\n");
-			print("The server encountered an internal error and was unable to complete your request.\n");
-			print("Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.\n");
-			print("More details can be found in the server log.\n");
-		}
-		die();
-	}
-
-	/**
-	 * This is only here to reduce the dependencies in case of an exception to
-	 * still be able to print a plain error message.
-	 *
-	 * Returns the used HTTP protocol.
-	 *
-	 * @return string HTTP protocol. HTTP/2, HTTP/1.1 or HTTP/1.0.
-	 * @internal Don't use this - use AppFramework\Http\Request->getHttpProtocol instead
-	 */
-	protected static function getHttpProtocol() {
-		$claimedProtocol = strtoupper($_SERVER['SERVER_PROTOCOL']);
-		$validProtocols = [
-			'HTTP/1.0',
-			'HTTP/1.1',
-			'HTTP/2',
-		];
-		if(in_array($claimedProtocol, $validProtocols, true)) {
-			return $claimedProtocol;
-		}
-		return 'HTTP/1.1';
-	}
+    /** @var string */
+    private $renderAs; // Create a full page?
+
+    /** @var string */
+    private $path; // The path to the template
+
+    /** @var array */
+    private $headers = array(); //custom headers
+
+    /** @var string */
+    protected $app; // app id
+
+    protected static $initTemplateEngineFirstRun = true;
+
+    /**
+     * Constructor
+     *
+     * @param string $app app providing the template
+     * @param string $name of the template file (without suffix)
+     * @param string $renderAs If $renderAs is set, OC_Template will try to
+     *                         produce a full page in the according layout. For
+     *                         now, $renderAs can be set to "guest", "user" or
+     *                         "admin".
+     * @param bool $registerCall = true
+     */
+    public function __construct( $app, $name, $renderAs = "", $registerCall = true ) {
+        // Read the selected theme from the config file
+        self::initTemplateEngine($renderAs);
+
+        $theme = OC_Util::getTheme();
+
+        $requestToken = (OC::$server->getSession() && $registerCall) ? \OCP\Util::callRegister() : '';
+
+        $parts = explode('/', $app); // fix translation when app is something like core/lostpassword
+        $l10n = \OC::$server->getL10N($parts[0]);
+        $themeDefaults = \OC::$server->getThemingDefaults();
+
+        list($path, $template) = $this->findTemplate($theme, $app, $name);
+
+        // Set the private data
+        $this->renderAs = $renderAs;
+        $this->path = $path;
+        $this->app = $app;
+
+        parent::__construct($template, $requestToken, $l10n, $themeDefaults);
+    }
+
+    /**
+     * @param string $renderAs
+     */
+    public static function initTemplateEngine($renderAs) {
+        if (self::$initTemplateEngineFirstRun){
+
+            //apps that started before the template initialization can load their own scripts/styles
+            //so to make sure this scripts/styles here are loaded first we use OC_Util::addScript() with $prepend=true
+            //meaning the last script/style in this list will be loaded first
+            if (\OC::$server->getSystemConfig()->getValue ('installed', false) && $renderAs !== 'error' && !\OCP\Util::needUpgrade()) {
+                if (\OC::$server->getConfig ()->getAppValue ( 'core', 'backgroundjobs_mode', 'ajax' ) == 'ajax') {
+                    OC_Util::addScript ( 'backgroundjobs', null, true );
+                }
+            }
+
+            OC_Util::addStyle("tooltip",null,true);
+            OC_Util::addStyle('jquery-ui-fixes',null,true);
+            OC_Util::addVendorStyle('jquery-ui/themes/base/jquery-ui',null,true);
+            OC_Util::addStyle("mobile",null,true);
+            OC_Util::addStyle("multiselect",null,true);
+            OC_Util::addStyle("fixes",null,true);
+            OC_Util::addStyle("global",null,true);
+            OC_Util::addStyle("apps",null,true);
+            OC_Util::addStyle("fonts",null,true);
+            OC_Util::addStyle("icons",null,true);
+            OC_Util::addStyle("actions",null,true);
+            OC_Util::addStyle("header",null,true);
+            OC_Util::addStyle("inputs");
+            OC_Util::addStyle("styles",null,true);
+
+            // avatars
+            \OC_Util::addScript('jquery.avatar', null, true);
+            \OC_Util::addScript('placeholder', null, true);
+
+            OC_Util::addVendorScript('select2/select2');
+            OC_Util::addVendorStyle('select2/select2', null, true);
+            OC_Util::addScript('select2-toggleselect');
+
+            OC_Util::addScript('oc-backbone', null, true);
+            OC_Util::addVendorScript('core', 'backbone/backbone', true);
+            OC_Util::addVendorScript('snapjs/dist/latest/snap', null, true);
+            OC_Util::addScript('mimetypelist', null, true);
+            OC_Util::addScript('mimetype', null, true);
+            OC_Util::addScript("apps", null, true);
+            OC_Util::addScript("oc-requesttoken", null, true);
+            OC_Util::addScript('search', 'search', true);
+            OC_Util::addScript("config", null, true);
+            OC_Util::addScript("public/appconfig", null, true);
+            OC_Util::addScript("eventsource", null, true);
+            OC_Util::addScript("octemplate", null, true);
+            OC_Util::addTranslations("core", null, true);
+            OC_Util::addScript("l10n", null, true);
+            OC_Util::addScript("js", null, true);
+            OC_Util::addScript("oc-dialogs", null, true);
+            OC_Util::addScript("jquery.ocdialog", null, true);
+            OC_Util::addScript("jquery-ui-fixes");
+            OC_Util::addStyle("jquery.ocdialog");
+            OC_Util::addScript('files/fileinfo');
+            OC_Util::addScript('files/client');
+
+            // Add the stuff we need always
+            // following logic will import all vendor libraries that are
+            // specified in core/js/core.json
+            $fileContent = file_get_contents(OC::$SERVERROOT . '/core/js/core.json');
+            if($fileContent !== false) {
+                $coreDependencies = json_decode($fileContent, true);
+                foreach(array_reverse($coreDependencies['vendor']) as $vendorLibrary) {
+                    // remove trailing ".js" as addVendorScript will append it
+                    OC_Util::addVendorScript(
+                            substr($vendorLibrary, 0, strlen($vendorLibrary) - 3),null,true);
+                }
+            } else {
+                throw new \Exception('Cannot read core/js/core.json');
+            }
+
+            if (\OC::$server->getRequest()->isUserAgent([\OC\AppFramework\Http\Request::USER_AGENT_IE])) {
+                // polyfill for btoa/atob for IE friends
+                OC_Util::addVendorScript('base64/base64');
+                // shim for the davclient.js library
+                \OCP\Util::addScript('files/iedavclient');
+            }
+
+            self::$initTemplateEngineFirstRun = false;
+        }
+
+    }
+
+
+    /**
+     * find the template with the given name
+     * @param string $name of the template file (without suffix)
+     *
+     * Will select the template file for the selected theme.
+     * Checking all the possible locations.
+     * @param string $theme
+     * @param string $app
+     * @return string[]
+     */
+    protected function findTemplate($theme, $app, $name) {
+        // Check if it is a app template or not.
+        if( $app !== '' ) {
+            $dirs = $this->getAppTemplateDirs($theme, $app, OC::$SERVERROOT, OC_App::getAppPath($app));
+        } else {
+            $dirs = $this->getCoreTemplateDirs($theme, OC::$SERVERROOT);
+        }
+        $locator = new \OC\Template\TemplateFileLocator( $dirs );
+        $template = $locator->find($name);
+        $path = $locator->getPath();
+        return array($path, $template);
+    }
+
+    /**
+     * Add a custom element to the header
+     * @param string $tag tag name of the element
+     * @param array $attributes array of attributes for the element
+     * @param string $text the text content for the element. If $text is null then the
+     * element will be written as empty element. So use "" to get a closing tag.
+     */
+    public function addHeader($tag, $attributes, $text=null) {
+        $this->headers[]= array(
+            'tag' => $tag,
+            'attributes' => $attributes,
+            'text' => $text
+        );
+    }
+
+    /**
+     * Process the template
+     * @return boolean|string
+     *
+     * This function process the template. If $this->renderAs is set, it
+     * will produce a full page.
+     */
+    public function fetchPage($additionalParams = null) {
+        $data = parent::fetchPage($additionalParams);
+
+        if( $this->renderAs ) {
+            $page = new TemplateLayout($this->renderAs, $this->app);
+
+            // Add custom headers
+            $headers = '';
+            foreach(OC_Util::$headers as $header) {
+                $headers .= '<'.\OCP\Util::sanitizeHTML($header['tag']);
+                foreach($header['attributes'] as $name=>$value) {
+                    $headers .= ' '.\OCP\Util::sanitizeHTML($name).'="'.\OCP\Util::sanitizeHTML($value).'"';
+                }
+                if ($header['text'] !== null) {
+                    $headers .= '>'.\OCP\Util::sanitizeHTML($header['text']).'</'.\OCP\Util::sanitizeHTML($header['tag']).'>';
+                } else {
+                    $headers .= '/>';
+                }
+            }
+
+            $page->assign('headers', $headers);
+
+            $page->assign('content', $data);
+            return $page->fetchPage();
+        }
+
+        return $data;
+    }
+
+    /**
+     * Include template
+     *
+     * @param string $file
+     * @param array|null $additionalParams
+     * @return string returns content of included template
+     *
+     * Includes another template. use <?php echo $this->inc('template'); ?> to
+     * do this.
+     */
+    public function inc( $file, $additionalParams = null ) {
+        return $this->load($this->path.$file.'.php', $additionalParams);
+    }
+
+    /**
+     * Shortcut to print a simple page for users
+     * @param string $application The application we render the template for
+     * @param string $name Name of the template
+     * @param array $parameters Parameters for the template
+     * @return boolean|null
+     */
+    public static function printUserPage( $application, $name, $parameters = array() ) {
+        $content = new OC_Template( $application, $name, "user" );
+        foreach( $parameters as $key => $value ) {
+            $content->assign( $key, $value );
+        }
+        print $content->printPage();
+    }
+
+    /**
+     * Shortcut to print a simple page for admins
+     * @param string $application The application we render the template for
+     * @param string $name Name of the template
+     * @param array $parameters Parameters for the template
+     * @return bool
+     */
+    public static function printAdminPage( $application, $name, $parameters = array() ) {
+        $content = new OC_Template( $application, $name, "admin" );
+        foreach( $parameters as $key => $value ) {
+            $content->assign( $key, $value );
+        }
+        return $content->printPage();
+    }
+
+    /**
+     * Shortcut to print a simple page for guests
+     * @param string $application The application we render the template for
+     * @param string $name Name of the template
+     * @param array|string $parameters Parameters for the template
+     * @return bool
+     */
+    public static function printGuestPage( $application, $name, $parameters = array() ) {
+        $content = new OC_Template( $application, $name, "guest" );
+        foreach( $parameters as $key => $value ) {
+            $content->assign( $key, $value );
+        }
+        return $content->printPage();
+    }
+
+    /**
+     * Print a fatal error page and terminates the script
+     * @param string $error_msg The error message to show
+     * @param string $hint An optional hint message - needs to be properly escaped
+     */
+    public static function printErrorPage( $error_msg, $hint = '' ) {
+        if ($error_msg === $hint) {
+            // If the hint is the same as the message there is no need to display it twice.
+            $hint = '';
+        }
+
+        try {
+            $content = new \OC_Template( '', 'error', 'error', false );
+            $errors = array(array('error' => $error_msg, 'hint' => $hint));
+            $content->assign( 'errors', $errors );
+            $content->printPage();
+        } catch (\Exception $e) {
+            $logger = \OC::$server->getLogger();
+            $logger->error("$error_msg $hint", ['app' => 'core']);
+            $logger->logException($e, ['app' => 'core']);
+
+            header(self::getHttpProtocol() . ' 500 Internal Server Error');
+            header('Content-Type: text/plain; charset=utf-8');
+            print("$error_msg $hint");
+        }
+        die();
+    }
+
+    /**
+     * print error page using Exception details
+     * @param Exception | Throwable $exception
+     */
+    public static function printExceptionErrorPage($exception, $fetchPage = false) {
+        try {
+            $request = \OC::$server->getRequest();
+            $content = new \OC_Template('', 'exception', 'error', false);
+            $content->assign('errorClass', get_class($exception));
+            $content->assign('errorMsg', $exception->getMessage());
+            $content->assign('errorCode', $exception->getCode());
+            $content->assign('file', $exception->getFile());
+            $content->assign('line', $exception->getLine());
+            $content->assign('trace', $exception->getTraceAsString());
+            $content->assign('debugMode', \OC::$server->getSystemConfig()->getValue('debug', false));
+            $content->assign('remoteAddr', $request->getRemoteAddress());
+            $content->assign('requestID', $request->getId());
+            if ($fetchPage) {
+                return $content->fetchPage();
+            }
+            $content->printPage();
+        } catch (\Exception $e) {
+            $logger = \OC::$server->getLogger();
+            $logger->logException($exception, ['app' => 'core']);
+            $logger->logException($e, ['app' => 'core']);
+
+            header(self::getHttpProtocol() . ' 500 Internal Server Error');
+            header('Content-Type: text/plain; charset=utf-8');
+            print("Internal Server Error\n\n");
+            print("The server encountered an internal error and was unable to complete your request.\n");
+            print("Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.\n");
+            print("More details can be found in the server log.\n");
+        }
+        die();
+    }
+
+    /**
+     * This is only here to reduce the dependencies in case of an exception to
+     * still be able to print a plain error message.
+     *
+     * Returns the used HTTP protocol.
+     *
+     * @return string HTTP protocol. HTTP/2, HTTP/1.1 or HTTP/1.0.
+     * @internal Don't use this - use AppFramework\Http\Request->getHttpProtocol instead
+     */
+    protected static function getHttpProtocol() {
+        $claimedProtocol = strtoupper($_SERVER['SERVER_PROTOCOL']);
+        $validProtocols = [
+            'HTTP/1.0',
+            'HTTP/1.1',
+            'HTTP/2',
+        ];
+        if(in_array($claimedProtocol, $validProtocols, true)) {
+            return $claimedProtocol;
+        }
+        return 'HTTP/1.1';
+    }
 }