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authorMorris Jobke <hey@morrisjobke.de>2017-09-26 11:21:39 +0200
committerMorris Jobke <hey@morrisjobke.de>2017-09-26 13:54:51 +0200
commit11c31e94fe6afaaba7c94a009cc931a5515d77a1 (patch)
treec5fe873526d1be62a94d207df342a6d5d242552a /index.php
parentef3e8faea22a3a7278dbf24f3988c80d80415090 (diff)
downloadnextcloud-server-11c31e94fe6afaaba7c94a009cc931a5515d77a1.tar.gz
nextcloud-server-11c31e94fe6afaaba7c94a009cc931a5515d77a1.zip
Improve exception handling
If there is an exception in the template handling then a white page is shown. This improves the handling of this and shows text only about the internal error. To test this just setup redis as cache and then disable the php-redis module. Signed-off-by: Morris Jobke <hey@morrisjobke.de>
Diffstat (limited to 'index.php')
-rw-r--r--index.php11
1 files changed, 10 insertions, 1 deletions
diff --git a/index.php b/index.php
index cd95b0c7965..f45b67811f2 100644
--- a/index.php
+++ b/index.php
@@ -47,7 +47,16 @@ try {
OC_Template::printExceptionErrorPage($ex);
} catch (\OC\HintException $ex) {
OC_Response::setStatus(OC_Response::STATUS_SERVICE_UNAVAILABLE);
- OC_Template::printErrorPage($ex->getMessage(), $ex->getHint());
+ try {
+ OC_Template::printErrorPage($ex->getMessage(), $ex->getHint());
+ } catch (Exception $ex2) {
+ \OC::$server->getLogger()->logException($ex, array('app' => 'index'));
+ \OC::$server->getLogger()->logException($ex2, array('app' => 'index'));
+
+ //show the user a detailed error page
+ OC_Response::setStatus(OC_Response::STATUS_INTERNAL_SERVER_ERROR);
+ OC_Template::printExceptionErrorPage($ex);
+ }
} catch (\OC\User\LoginException $ex) {
OC_Response::setStatus(OC_Response::STATUS_FORBIDDEN);
OC_Template::printErrorPage($ex->getMessage(), $ex->getMessage());
generated by cgit v1.2.3 (git 2.39.1) at 2025-03-09 23:30:32 +0000
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<?php
/**
 * ownCloud
 *
 * @author Frank Karlitschek
 * @author Jakob Sack
 * @copyright 2012 Frank Karlitschek frank@owncloud.org
 * @copyright 2013 Jakob Sack
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or any later version.
 *
 * This library 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 along with this library.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/**
 * This class is for i18n and l10n
 */
class OC_L10N {
	/**
	 * cached instances
	 */
	protected static $instances=array();

	/**
	 * cache
	 */
	protected static $cache = array();

	/**
	 * The best language
	 */
	protected static $language = '';

	/**
	 * App of this object
	 */
	protected $app;

	/**
	 * Language of this object
	 */
	protected $lang;

	/**
	 * Translations
	 */
	private $translations = array();

	/**
	 * Plural forms (string)
	 */
	private $plural_form_string = 'nplurals=2; plural=(n != 1);';

	/**
	 * Plural forms (function)
	 */
	private $plural_form_function = null;

	/**
	 * Localization
	 */
	private $localizations = array(
		'jsdate' => 'dd.mm.yy',
		'date' => '%d.%m.%Y',
		'datetime' => '%d.%m.%Y %H:%M:%S',
		'time' => '%H:%M:%S',
		'firstday' => 0);

	/**
	 * get an L10N instance
	 * @param $app string
	 * @param $lang string|null
	 * @return OC_L10N
	 */
	public static function get($app, $lang=null) {
		if(is_null($lang)) {
			if(!isset(self::$instances[$app])) {
				self::$instances[$app]=new OC_L10N($app);
			}
			return self::$instances[$app];
		}else{
			return new OC_L10N($app, $lang);
		}
	}

	/**
	 * @brief The constructor
	 * @param $app string app requesting l10n
	 * @param $lang string default: null Language
	 * @returns OC_L10N-Object
	 *
	 * If language is not set, the constructor tries to find the right
	 * language.
	 */
	public function __construct($app, $lang = null) {
		$this->app = $app;
		$this->lang = $lang;
	}

	public function load($transFile) {
		$this->app = true;
		include $transFile;
		if(isset($TRANSLATIONS) && is_array($TRANSLATIONS)) {
			$this->translations = $TRANSLATIONS;
		}
		if(isset($PLURAL_FORMS)) {
			$this->plural_form_string = $PLURAL_FORMS;
		}
	}

	protected function init() {
		if ($this->app === true) {
			return;
		}
		$app = OC_App::cleanAppId($this->app);
		$lang = $this->lang;
		$this->app = true;
		// Find the right language
		if(is_null($lang) || $lang == '') {
			$lang = self::findLanguage($app);
		}

		// Use cache if possible
		if(array_key_exists($app.'::'.$lang, self::$cache)) {

			$this->translations = self::$cache[$app.'::'.$lang]['t'];
			$this->localizations = self::$cache[$app.'::'.$lang]['l'];
		}
		else{
			$i18ndir = self::findI18nDir($app);
			// Localization is in /l10n, Texts are in $i18ndir
			// (Just no need to define date/time format etc. twice)
			if((OC_Helper::issubdirectory($i18ndir.$lang.'.php', OC_App::getAppPath($app).'/l10n/')
				|| OC_Helper::issubdirectory($i18ndir.$lang.'.php', OC::$SERVERROOT.'/core/l10n/')
				|| OC_Helper::issubdirectory($i18ndir.$lang.'.php', OC::$SERVERROOT.'/lib/l10n/')
				|| OC_Helper::issubdirectory($i18ndir.$lang.'.php', OC::$SERVERROOT.'/settings')
				)
				&& file_exists($i18ndir.$lang.'.php')) {
				// Include the file, save the data from $CONFIG
				$transFile = strip_tags($i18ndir).strip_tags($lang).'.php';
				include $transFile;
				if(isset($TRANSLATIONS) && is_array($TRANSLATIONS)) {
					$this->translations = $TRANSLATIONS;
					//merge with translations from theme
					$theme = OC_Config::getValue( "theme" );
					if (!is_null($theme)) {
						$transFile = OC::$SERVERROOT.'/themes/'.$theme.substr($transFile, strlen(OC::$SERVERROOT));
						if (file_exists($transFile)) {
							include $transFile;
							if (isset($TRANSLATIONS) && is_array($TRANSLATIONS)) {
								$this->translations = array_merge($this->translations, $TRANSLATIONS);
							}
						}
					}
				}
				if(isset($PLURAL_FORMS)) {
					$this->plural_form_string = $PLURAL_FORMS;
				}
			}

			if(file_exists(OC::$SERVERROOT.'/core/l10n/l10n-'.$lang.'.php')) {
				// Include the file, save the data from $CONFIG
				include OC::$SERVERROOT.'/core/l10n/l10n-'.$lang.'.php';
				if(isset($LOCALIZATIONS) && is_array($LOCALIZATIONS)) {
					$this->localizations = array_merge($this->localizations, $LOCALIZATIONS);
				}
			}

			self::$cache[$app.'::'.$lang]['t'] = $this->translations;
			self::$cache[$app.'::'.$lang]['l'] = $this->localizations;
		}
	}

	/**
	 * @brief Creates a function that The constructor
	 *
	 * If language is not set, the constructor tries to find the right
	 * language.
	 *
	 * Parts of the code is copied from Habari:
	 * https://github.com/habari/system/blob/master/classes/locale.php
	 * @param $string string
	 * @return string
	 */
	protected function createPluralFormFunction($string){
		if(preg_match( '/^\s*nplurals\s*=\s*(\d+)\s*;\s*plural=(.*)$/u', $string, $matches)) {
			// sanitize
			$nplurals = preg_replace( '/[^0-9]/', '', $matches[1] );
			$plural = preg_replace( '#[^n0-9:\(\)\?\|\&=!<>+*/\%-]#', '', $matches[2] );

			$body = str_replace(
				array( 'plural', 'n', '$n$plurals', ),
				array( '$plural', '$n', '$nplurals', ),
				'nplurals='. $nplurals . '; plural=' . $plural
			);

			// add parents
			// important since PHP's ternary evaluates from left to right
			$body .= ';';
			$res = '';
			$p = 0;
			for($i = 0; $i < strlen($body); $i++) {
				$ch = $body[$i];
				switch ( $ch ) {
				case '?':
					$res .= ' ? (';
					$p++;
					break;
				case ':':
					$res .= ') : (';
					break;
				case ';':
					$res .= str_repeat( ')', $p ) . ';';
					$p = 0;
					break;
				default:
					$res .= $ch;
				}
			}

			$body = $res . 'return ($plural>=$nplurals?$nplurals-1:$plural);';
			return create_function('$n', $body);
		}
		else {
			// default: one plural form for all cases but n==1 (english)
			return create_function(
				'$n',
				'$nplurals=2;$plural=($n==1?0:1);return ($plural>=$nplurals?$nplurals-1:$plural);'
			);
		}
	}

	/**
	 * @brief Translating
	 * @param $text String The text we need a translation for
	 * @param array $parameters default:array() Parameters for sprintf
	 * @return \OC_L10N_String Translation or the same text
	 *
	 * Returns the translation. If no translation is found, $text will be
	 * returned.
	 */
	public function t($text, $parameters = array()) {
		return new OC_L10N_String($this, $text, $parameters);
	}

	/**
	 * @brief Translating
	 * @param $text_singular String the string to translate for exactly one object
	 * @param $text_plural String the string to translate for n objects
	 * @param $count Integer Number of objects
	 * @param array $parameters default:array() Parameters for sprintf
	 * @return \OC_L10N_String Translation or the same text
	 *
	 * Returns the translation. If no translation is found, $text will be
	 * returned. %n will be replaced with the number of objects.
	 *
	 * The correct plural is determined by the plural_forms-function
	 * provided by the po file.
	 *
	 */
	public function n($text_singular, $text_plural, $count, $parameters = array()) {
		$this->init();
		$identifier = "_${text_singular}__${text_plural}_";
		if( array_key_exists($identifier, $this->translations)) {
			return new OC_L10N_String( $this, $identifier, $parameters, $count );
		}
		else{
			if($count === 1) {
				return new OC_L10N_String($this, $text_singular, $parameters, $count);
			}
			else{
				return new OC_L10N_String($this, $text_plural, $parameters, $count);
			}
		}
	}

	/**
	 * @brief Translating
	 * @param $textArray The text array we need a translation for
	 * @returns Translation or the same text
	 *
	 * Returns the translation. If no translation is found, $textArray will be
	 * returned.
	 *
	 *
	 * @deprecated deprecated since ownCloud version 5.0
	 * This method will probably be removed with ownCloud 6.0
	 *
	 *
	 */
	public function tA($textArray) {
		OC_Log::write('core', 'DEPRECATED: the method tA is deprecated and will be removed soon.', OC_Log::WARN);
		$result = array();
		foreach($textArray as $key => $text) {
			$result[$key] = (string)$this->t($text);
		}
		return $result;
	}

	/**
	 * @brief getTranslations
	 * @returns Fetch all translations
	 *
	 * Returns an associative array with all translations
	 */
	public function getTranslations() {
		$this->init();
		return $this->translations;
	}

	/**
	 * @brief getPluralFormString
	 * @returns string containing the gettext "Plural-Forms"-string
	 *
	 * Returns a string like "nplurals=2; plural=(n != 1);"
	 */
	public function getPluralFormString() {
		$this->init();
		return $this->plural_form_string;
	}

	/**
	 * @brief getPluralFormFunction
	 * @returns string the plural form function
	 *
	 * returned function accepts the argument $n
	 */
	public function getPluralFormFunction() {
		$this->init();
		if(is_null($this->plural_form_function)) {
			$this->plural_form_function = $this->createPluralFormFunction($this->plural_form_string);
		}
		return $this->plural_form_function;
	}

	/**
	 * @brief get localizations
	 * @returns Fetch all localizations
	 *
	 * Returns an associative array with all localizations
	 */
	public function getLocalizations() {
		$this->init();
		return $this->localizations;
	}

	/**
	 * @brief Localization
	 * @param $type Type of localization
	 * @param $params parameters for this localization
	 * @returns String or false
	 *
	 * Returns the localized data.
	 *
	 * Implemented types:
	 *  - date
	 *    - Creates a date
	 *    - l10n-field: date
	 *    - params: timestamp (int/string)
	 *  - datetime
	 *    - Creates date and time
	 *    - l10n-field: datetime
	 *    - params: timestamp (int/string)
	 *  - time
	 *    - Creates a time
	 *    - l10n-field: time
	 *    - params: timestamp (int/string)
	 */
	public function l($type, $data) {
		$this->init();
		switch($type) {
			// If you add something don't forget to add it to $localizations
			// at the top of the page
			case 'date':
			case 'datetime':
			case 'time':
				if($data instanceof DateTime) {
					return $data->format($this->localizations[$type]);
				}
				elseif(is_string($data)) {
					$data = strtotime($data);
				}
				$locales = array(self::findLanguage());
				if (strlen($locales[0]) == 2) {
					$locales[] = $locales[0].'_'.strtoupper($locales[0]);
				}
				setlocale(LC_TIME, $locales);
				$format = $this->localizations[$type];
				// Check for Windows to find and replace the %e modifier correctly
				if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
					$format = preg_replace('#(?<!%)((?:%%)*)%e#', '\1%#d', $format);
				}
				return strftime($format, $data);
				break;
			case 'firstday':
			case 'jsdate':
				return $this->localizations[$type];
			default:
				return false;
		}
	}

	/**
	 * @brief Choose a language
	 * @param $texts Associative Array with possible strings
	 * @returns String
	 *
	 * $text is an array 'de' => 'hallo welt', 'en' => 'hello world', ...
	 *
	 * This function is useful to avoid loading thousands of files if only one
	 * simple string is needed, for example in appinfo.php
	 */
	public static function selectLanguage($text) {
		$lang = self::findLanguage(array_keys($text));
		return $text[$lang];
	}

	/**
	 * @brief find the best language
	 * @param $app Array or string, details below
	 * @returns language
	 *
	 * If $app is an array, ownCloud assumes that these are the available
	 * languages. Otherwise ownCloud tries to find the files in the l10n
	 * folder.
	 *
	 * If nothing works it returns 'en'
	 */
	public static function findLanguage($app = null) {
		if(!is_array($app) && self::$language != '') {
			return self::$language;
		}

		if(OC_User::getUser() && OC_Preferences::getValue(OC_User::getUser(), 'core', 'lang')) {
			$lang = OC_Preferences::getValue(OC_User::getUser(), 'core', 'lang');
			self::$language = $lang;
			if(is_array($app)) {
				$available = $app;
				$lang_exists = array_search($lang, $available) !== false;
			}
			else {
				$lang_exists = self::languageExists($app, $lang);
			}
			if($lang_exists) {
				return $lang;
			}
		}

    $default_language = OC_Config::getValue('default_language', false);

    if($default_language !== false) {
      return $default_language;
    }

		if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
			$accepted_languages = preg_split('/,\s*/', strtolower($_SERVER['HTTP_ACCEPT_LANGUAGE']));
			if(is_array($app)) {
				$available = $app;
			}
			else{
				$available = self::findAvailableLanguages($app);
			}
			foreach($accepted_languages as $i) {
				$temp = explode(';', $i);
				$temp[0] = str_replace('-', '_', $temp[0]);
				if( ($key = array_search($temp[0], $available)) !== false) {
					if (is_null($app)) {
						self::$language = $available[$key];
					}
					return $available[$key];
				}
				foreach($available as $l) {
					if ( $temp[0] == substr($l, 0, 2) ) {
						if (is_null($app)) {
							self::$language = $l;
						}
						return $l;
					}
				}
			}
		}

		// Last try: English
		return 'en';
	}

	/**
	 * @brief find the l10n directory
	 * @param $app App that needs to be translated
	 * @returns directory
	 */
	protected static function findI18nDir($app) {
		// find the i18n dir
		$i18ndir = OC::$SERVERROOT.'/core/l10n/';
		if($app != '') {
			// Check if the app is in the app folder
			if(file_exists(OC_App::getAppPath($app).'/l10n/')) {
				$i18ndir = OC_App::getAppPath($app).'/l10n/';
			}
			else{
				$i18ndir = OC::$SERVERROOT.'/'.$app.'/l10n/';
			}
		}
		return $i18ndir;
	}

	/**
	 * @brief find all available languages for an app
	 * @param $app App that needs to be translated
	 * @returns array an array of available languages
	 */
	public static function findAvailableLanguages($app=null) {
		$available=array('en');//english is always available
		$dir = self::findI18nDir($app);
		if(is_dir($dir)) {
			$files=scandir($dir);
			foreach($files as $file) {
				if(substr($file, -4, 4) === '.php' && substr($file, 0, 4) !== 'l10n') {
					$i = substr($file, 0, -4);
					$available[] = $i;
				}
			}
		}
		return $available;
	}

	public static function languageExists($app, $lang) {
		if ($lang == 'en') {//english is always available
			return true;
		}
		$dir = self::findI18nDir($app);
		if(is_dir($dir)) {
			return file_exists($dir.'/'.$lang.'.php');
		}
		return false;
	}
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-03-09 23:30:28 +0000