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diff --git a/inc/main/classes/filter/verifier/class_PasswordGuestVerifierFilter.php b/inc/main/classes/filter/verifier/class_PasswordGuestVerifierFilter.php
new file mode 100644
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--- /dev/null
+++ b/inc/main/classes/filter/verifier/class_PasswordGuestVerifierFilter.php
@@ -0,0 +1,85 @@
+<?php
+/**
+ * A concrete filter for validating the guest password. This filter may intercept
+ * the filter chain if no password is given or the password is invalid
+ *
+ * @author		Roland Haeder <webmaster@shipsimu.org>
+ * @version		0.0.0
+ * @copyright	Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2015 Core Developer Team
+ * @license		GNU GPL 3.0 or any newer version
+ * @link		http://www.shipsimu.org
+ *
+ * This program 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.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+class PasswordGuestVerifierFilter extends BaseFilter implements Filterable {
+	/**
+	 * Protected constructor
+	 *
+	 * @return	void
+	 */
+	protected function __construct () {
+		// Call parent constructor
+		parent::__construct(__CLASS__);
+	}
+
+	/**
+	 * Creates an instance of this filter class
+	 *
+	 * @return	$filterInstance		An instance of this filter class
+	 */
+	public static final function createPasswordGuestVerifierFilter () {
+		// Get a new instance
+		$filterInstance = new PasswordGuestVerifierFilter();
+
+		// Return the instance
+		return $filterInstance;
+	}
+
+	/**
+	 * Executes the filter with given request and response objects
+	 *
+	 * @param	$requestInstance	An instance of a class with an Requestable interface
+	 * @param	$responseInstance	An instance of a class with an Responseable interface
+	 * @return	void
+	 * @throws	FilterChainException	If this filter fails to operate
+	 */
+	public function execute (Requestable $requestInstance, Responseable $responseInstance) {
+		// Get password
+		$password = $requestInstance->getRequestElement('passwd');
+
+		// Is the password still not set?
+		if (is_null($password)) {
+			// Not found in form so stop the filtering process
+			$requestInstance->requestIsValid(FALSE);
+
+			// Add a message to the response
+			$responseInstance->addFatalMessage('password_unset');
+
+			// Abort here
+			throw new FilterChainException($this, self::EXCEPTION_FILTER_CHAIN_INTERCEPTED);
+		} elseif (empty($password)) {
+			// Password is empty
+			$requestInstance->requestIsValid(FALSE);
+
+			// Add a message to the response
+			$responseInstance->addFatalMessage('password_empty');
+
+			// Abort here
+			throw new FilterChainException($this, self::EXCEPTION_FILTER_CHAIN_INTERCEPTED);
+		}
+	}
+}
+
+// [EOF]
+?>