ValidHostNameFilter.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * 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 Lesser General Public License for more
 * details.
 */

package com.liferay.portal.servlet.filters.validhostname;

import com.liferay.portal.kernel.servlet.TryFilter;
import com.liferay.portal.kernel.util.PortalUtil;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portal.servlet.filters.BasePortalFilter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author Shuyang Zhou
 */
public class ValidHostNameFilter extends BasePortalFilter implements TryFilter {

	@Override
	public Object doFilterTry(
			HttpServletRequest request, HttpServletResponse response)
		throws Exception {

		String serverName = request.getServerName();

		String validPortalDomain = PortalUtil.getValidPortalDomain(
			PortalUtil.getDefaultCompanyId(), serverName);

		if (!StringUtil.equalsIgnoreCase(serverName, validPortalDomain)) {
			throw new RuntimeException("Invalid host name " + serverName);
		}

		return null;
	}

}