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nextcloud/lib/private/template.php

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<?php
/**
* @author Adam Williamson <awilliam@redhat.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Björn Schießle <schiessle@owncloud.com>
* @author Brice Maron <brice@bmaron.net>
* @author drarko <drarko@users.noreply.github.com>
* @author Frank Karlitschek <frank@owncloud.org>
* @author Individual IT Services <info@individual-it.net>
* @author Jakob Sack <mail@jakobsack.de>
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Lukas Reschke <lukas@owncloud.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <icewind@owncloud.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
require_once __DIR__.'/template/functions.php';
/**
* This class provides the templates for ownCloud.
*/
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
/**
* Constructor
* @param string $app app providing the template
* @param string $name of the template file (without suffix)
* @param string $renderAs = ""; produce a full page
* @param bool $registerCall = true
* @return OC_Template object
*
* This function creates an OC_Template object.
*
* 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".
*/
protected static $initTemplateEngineFirstRun = 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() and $registerCall) ? OC_Util::callRegister() : '';
$parts = explode('/', $app); // fix translation when app is something like core/lostpassword
$l10n = \OC::$server->getL10N($parts[0]);
$themeDefaults = new OC_Defaults();
list($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, $themeDefaults);
}
public static function initTemplateEngine($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("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("mobile",null,true);
OC_Util::addStyle("header",null,true);
OC_Util::addStyle("inputs",null,true);
OC_Util::addStyle("styles",null,true);
// avatars
if (\OC::$server->getSystemConfig()->getValue('enable_avatars', true) === true) {
\OC_Util::addScript('jquery.avatar', null, true);
\OC_Util::addScript('placeholder', null, true);
}
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("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::addStyle("jquery.ocdialog");
OC_Util::addScript("compatibility", null, true);
OC_Util::addScript("placeholders", null, true);
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 $app
* @return array
*/
protected function findTemplate($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() {
$data = parent::fetchPage();
if( $this->renderAs ) {
$page = new OC_TemplateLayout($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 = '' ) {
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 $exception
*/
public static function printExceptionErrorPage($exception) {
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());
$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';
}
/**
* @return bool
*/
public static function isAssetPipelineEnabled() {
try {
if (\OCP\Util::needUpgrade()) {
// Don't use the compiled asset when we need to do an update
return false;
}
} catch (\Exception $e) {
// Catch any exception, because this code is also called when displaying
// an exception error page.
return false;
}
// asset management enabled?
$config = \OC::$server->getConfig();
$useAssetPipeline = $config->getSystemValue('asset-pipeline.enabled', false);
if (!$useAssetPipeline) {
return false;
}
// assets folder exists?
$assetDir = $config->getSystemValue('assetdirectory', \OC::$SERVERROOT) . '/assets';
if (!is_dir($assetDir)) {
if (!mkdir($assetDir)) {
\OCP\Util::writeLog('assets',
"Folder <$assetDir> does not exist and/or could not be generated.", \OCP\Util::ERROR);
return false;
}
}
// assets folder can be accessed?
if (!touch($assetDir."/.oc")) {
\OCP\Util::writeLog('assets',
"Folder <$assetDir> could not be accessed.", \OCP\Util::ERROR);
return false;
}
return $useAssetPipeline;
}
}
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