[BUGFIX] Some XLIFF files aren't found inside of the TYPO3 core extensions.

Classes/Service/ConfigurationService.php

@@ -83,10 +83,14 @@ class ConfigurationService extends AbstractService {
 		$this->extConfig = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf']['lfeditor']);
 
 		// regular expressions
-		$this->extConfig['searchRegex'] = '/^[a-z0-9_]*locallang[a-z0-9_-]*\.(php|xml|xlf)$/i';
+		if (!preg_match('/^\/.*\/.*$/', $this->extConfig['searchRegex'])) {
+			$this->extConfig['searchRegex'] = '/^([a-z0-9_]*locallang[a-z0-9_-]*\.(php|xml)|[^\.]*\.xlf)$/i';
+		}
+
 		if (!preg_match('/^\/.*\/.*$/', $this->extConfig['extIgnore'])) {
 			$this->extConfig['extIgnore'] = '/^csh_.*$/';
 		}
+
 		$this->extConfig['execBackup'] = TRUE;
 		$this->extConfig['viewSysExt'] = TRUE;
 		$this->extConfig['viewGlobalExt'] = TRUE;

Classes/Service/LicensingService.php

+<?php
+
+namespace SGalinski\Lfeditor\Service;
+
+/***************************************************************
+ *  Copyright notice
+ *
+ *  (c) sgalinski Internet Services (https://www.sgalinski.de)
+ *
+ *  All rights reserved
+ *
+ *  This script is part of the TYPO3 project. The TYPO3 project is
+ *  free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  The GNU General Public License can be found at
+ *  http://www.gnu.org/copyleft/gpl.html.
+ *
+ *  This script 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 General Public License for more details.
+ *
+ *  This copyright notice MUST APPEAR in all copies of the script!
+ ***************************************************************/
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * Class SGalinski\SgRoutes\Service\LicensingService
+ */
+class LicensingService {
+	/**
+	 * Licensing Service Url
+	 */
+	const URL = 'https://www.sgalinski.de/?eID=sgLicensing';
+
+	/**
+	 * Licensing Service Url
+	 */
+	const EXTENSION_KEY = 'lfeditor';
+
+	/** @var bool|NULL */
+	private static $isLicenseKeyValid;
+
+	/**
+	 * @return boolean
+	 */
+	public static function checkKey(): bool {
+		if (static::$isLicenseKeyValid === NULL) {
+			static::$isLicenseKeyValid = FALSE;
+			$configuration = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][self::EXTENSION_KEY], [FALSE]);
+			if (isset($configuration['key']) && $key = trim($configuration['key'])) {
+				static::$isLicenseKeyValid = (bool) preg_match('/^([A-Z\d]{6}-?){4}$/', $key);
+			}
+		}
+
+		return static::$isLicenseKeyValid;
+	}
+
+	/**
+	 * Licensing Service ping
+	 *
+	 * @param boolean $returnUrl
+	 * @return string
+	 */
+	public static function ping($returnUrl = FALSE): string {
+		try {
+			$configuration = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][self::EXTENSION_KEY], [FALSE]);
+			$key = '';
+			if (isset($configuration['key'])) {
+				$key = trim($configuration['key']);
+			}
+			$params = [
+				'extension' => self::EXTENSION_KEY,
+				'host' => GeneralUtility::getIndpEnv('HTTP_HOST'),
+				'key' => $key
+			];
+			$params = http_build_query($params);
+			$pingUrl = self::URL;
+			$pingUrl .= $params !== '' ? (strpos($pingUrl, '?') === FALSE ? '?' : '&') . $params : '';
+			if ($returnUrl) {
+				return $pingUrl;
+			}
+
+			GeneralUtility::getUrl($pingUrl);
+		} catch (\Exception $exception) {
+		}
+
+		return '';
+	}
+
+	/**
+	 * Generates a random password string based on the configured password policies.
+	 *
+	 * @param ServerRequestInterface $request
+	 * @param ResponseInterface $response
+	 * @return ResponseInterface
+	 * @throws \InvalidArgumentException
+	 */
+	public function ajaxPing(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface {
+		/** @var BackendUserAuthentication $backendUser */
+		$backendUser = $GLOBALS['BE_USER'];
+		$moduleKey = 'tools_beuser/index.php/user-LfeditorLfeditor_pinged';
+		if ($backendUser && !$backendUser->getModuleData($moduleKey, 'ses')) {
+			$backendUser->pushModuleData($moduleKey, TRUE);
+			self::ping();
+		}
+		return $response;
+	}
+}

Configuration/Backend/AjaxRoutes.php

+<?php
+
+return [
+	'lfeditor::ajaxPing' => [
+		'path' => '/lfeditor/ajaxPing',
+		'target' => SGalinski\Lfeditor\Service\LicensingService::class . '::ajaxPing',
+	]
+];

Resources/Public/Scripts/Lfeditor.js

@@ -151,3 +151,9 @@ function saveOnKeyDown(eventParameter) {
 }
 
 document.onkeydown = saveOnKeyDown;
+
+(function($) {
+	$(document).ready(function() {
+		$.get(TYPO3.settings.ajaxUrls['lfeditor::ajaxPing']);
+	});
+})(TYPO3.jQuery);

ext_conf_template.txt

@@ -6,7 +6,10 @@ viewLanguages =
 # cat=basic; type=string; label=Default language: If 'en' is not default language in TYPO3 BE, default language must be defined here (e.g. de).
 defaultLanguage =
 
-# cat=basic; type=string; label=Ignore extensions: Regular expression which limits the extension key list.
+# cat=basic; type=string; label=This is the search pattern, which is in charge for finding all language files. Including legacy files.
+searchRegex = /^([a-z0-9_]*locallang[a-z0-9_-]*\.(php|xml)|[^\.]*\.xlf)$/i
+
+# cat=basic; type=string; label=Ignore extensions: Regular expression which limits the extension key list. An example for blacklist specific extensions, from the extension select box, would be the following pattern: /^(gridelements|lfeditor|CVS|.svn|.git|csh_)/
 extIgnore = /^(CVS|.svn|.git|csh_)/
 
 # cat=basic; type=boolean; label=Change XLF date: If set to TRUE, LFEditor will change the date in XLF files on each change.