nextcloud/lib/private/legacy/OC_Template.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
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* @author Bart Visscher <bartv@thisnet.nl>
* @author Brice Maron <brice@bmaron.net>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Frank Karlitschek <frank@karlitschek.de>
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* @author Individual IT Services <info@individual-it.net>
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* @author Jakob Sack <mail@jakobsack.de>
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* @author Jan-Christoph Borchardt <hey@jancborchardt.net>
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* @author Joas Schilling <coding@schilljs.com>
* @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Julius Härtl <jus@bitgrid.net>
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* @author Lukas Reschke <lukas@statuscode.ch>
* @author Marin Treselj <marin@pixelipo.com>
* @author Michael Letzgus <www@chronos.michael-letzgus.de>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <pvince81@owncloud.com>
*
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* @license AGPL-3.0
*
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* 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.
*
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* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
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* 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/>
*
*/
use OC\TemplateLayout;
use OCP\AppFramework\Http\TemplateResponse;
require_once __DIR__.'/template/functions.php';
/**
* This class provides the templates for ownCloud.
*/
class OC_Template extends \OC\Template\Base {
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/** @var string */
private $renderAs; // Create a full page?
/** @var string */
private $path; // The path to the template
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/** @var array */
private $headers = []; //custom headers
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/** @var string */
protected $app; // app id
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protected static $initTemplateEngineFirstRun = true;
/**
* Constructor
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*
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* @param string $app app providing the template
* @param string $name of the template file (without suffix)
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* @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 = TemplateResponse::RENDER_AS_BLANK, $registerCall = true) {
// Read the selected theme from the config file
self::initTemplateEngine($renderAs);
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$theme = OC_Util::getTheme();
$requestToken = (OC::$server->getSession() && $registerCall) ? \OCP\Util::callRegister() : '';
$parts = explode('/', $app); // fix translation when app is something like core/lostpassword
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$l10n = \OC::$server->getL10N($parts[0]);
/** @var \OCP\Defaults $themeDefaults */
$themeDefaults = \OC::$server->query(\OCP\Defaults::class);
list($path, $template) = $this->findTemplate($theme, $app, $name);
// Set the private data
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$this->renderAs = $renderAs;
$this->path = $path;
$this->app = $app;
parent::__construct($template, $requestToken, $l10n, $themeDefaults);
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}
/**
* @param string $renderAs
*/
public static function initTemplateEngine($renderAs) {
if (self::$initTemplateEngineFirstRun) {
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//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) && $renderAs !== TemplateResponse::RENDER_AS_ERROR && !\OCP\Util::needUpgrade()) {
if (\OC::$server->getConfig()->getAppValue('core', 'backgroundjobs_mode', 'ajax') == 'ajax') {
OC_Util::addScript('backgroundjobs', null, true);
}
}
OC_Util::addStyle('css-variables', null, true);
OC_Util::addStyle('server', null, true);
OC_Util::addTranslations('core', null, true);
if (\OC::$server->getSystemConfig()->getValue('installed', false)) {
OC_Util::addScript('merged-template-prepend', null, true);
OC_Util::addScript('dist/files_client', null, true);
OC_Util::addScript('dist/files_fileinfo', null, true);
}
OC_Util::addScript('core', 'dist/main', true);
if (\OC::$server->getRequest()->isUserAgent([\OC\AppFramework\Http\Request::USER_AGENT_IE])) {
// shim for the davclient.js library
\OCP\Util::addScript('dist/files_iedavclient');
}
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self::$initTemplateEngineFirstRun = false;
}
}
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/**
* find the template with the given name
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* @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 = $locator->getPath();
return [$path, $template];
}
/**
* Add a custom element to the header
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* @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[] = [
'tag' => $tag,
'attributes' => $attributes,
'text' => $text
];
}
/**
* Process the template
* @return string
*
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* 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, $this->app);
if (is_array($additionalParams)) {
foreach ($additionalParams as $key => $value) {
$page->assign($key, $value);
}
}
// Add custom headers
$headers = '';
foreach (OC_Util::$headers as $header) {
$headers .= '<'.\OCP\Util::sanitizeHTML($header['tag']);
if (strcasecmp($header['tag'], 'script') === 0 && in_array('src', array_map('strtolower', array_keys($header['attributes'])))) {
$headers .= ' defer';
}
foreach ($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 {
$headers .= '/>';
}
}
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$page->assign('headers', $headers);
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$page->assign('content', $data);
return $page->fetchPage($additionalParams);
}
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return $data;
}
/**
* Include template
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*
* @param string $file
* @param array|null $additionalParams
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* @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
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* @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 = []) {
$content = new OC_Template($application, $name, "user");
foreach ($parameters as $key => $value) {
$content->assign($key, $value);
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}
print $content->printPage();
}
/**
* Shortcut to print a simple page for admins
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* @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 = []) {
$content = new OC_Template($application, $name, "admin");
foreach ($parameters as $key => $value) {
$content->assign($key, $value);
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}
return $content->printPage();
}
/**
* Shortcut to print a simple page for guests
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* @param string $application The application we render the template for
* @param string $name Name of the template
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* @param array|string $parameters Parameters for the template
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* @return bool
*/
public static function printGuestPage($application, $name, $parameters = []) {
$content = new OC_Template($application, $name, $name === 'error' ? $name : 'guest');
foreach ($parameters as $key => $value) {
$content->assign($key, $value);
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}
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 escape
* @param int $statusCode
* @suppress PhanAccessMethodInternal
*/
public static function printErrorPage($error_msg, $hint = '', $statusCode = 500) {
if (\OC::$server->getAppManager()->isEnabledForUser('theming') && !\OC_App::isAppLoaded('theming')) {
\OC_App::loadApp('theming');
}
if ($error_msg === $hint) {
// If the hint is the same as the message there is no need to display it twice.
$hint = '';
}
http_response_code($statusCode);
try {
$content = new \OC_Template('', 'error', 'error', false);
$errors = [['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('Content-Type: text/plain; charset=utf-8');
print("$error_msg $hint");
}
die();
}
/**
* print error page using Exception details
* @param Exception|Throwable $exception
* @param int $statusCode
* @return bool|string
* @suppress PhanAccessMethodInternal
*/
public static function printExceptionErrorPage($exception, $statusCode = 503) {
http_response_code($statusCode);
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) {
try {
$logger = \OC::$server->getLogger();
$logger->logException($exception, ['app' => 'core']);
$logger->logException($e, ['app' => 'core']);
} catch (Throwable $e) {
// no way to log it properly - but to avoid a white page of death we send some output
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");
// and then throw it again to log it at least to the web server error log
throw $e;
}
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();
}
}