01: /******************************************************************************
02: * JBoss, a division of Red Hat *
03: * Copyright 2006, Red Hat Middleware, LLC, and individual *
04: * contributors as indicated by the @authors tag. See the *
05: * copyright.txt in the distribution for a full listing of *
06: * individual contributors. *
07: * *
08: * This is free software; you can redistribute it and/or modify it *
09: * under the terms of the GNU Lesser General Public License as *
10: * published by the Free Software Foundation; either version 2.1 of *
11: * the License, or (at your option) any later version. *
12: * *
13: * This software is distributed in the hope that it will be useful, *
14: * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
16: * Lesser General Public License for more details. *
17: * *
18: * You should have received a copy of the GNU Lesser General Public *
19: * License along with this software; if not, write to the Free *
20: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA *
21: * 02110-1301 USA, or see the FSF site: http://www.fsf.org. *
22: ******************************************************************************/package org.jboss.portal.registration;
23:
24: import org.jboss.portal.common.util.ParameterValidation;
25:
26: /**
27: * @author <a href="mailto:chris.laprun@jboss.com">Chris Laprun</a>
28: * @version $Revision: 8784 $
29: * @since 2.6
30: */
31: public class RegistrationUtils {
32: /**
33: * @param consumerAgent
34: * @throws IllegalArgumentException
35: * @since 2.6
36: */
37: public static void validateConsumerAgent(String consumerAgent)
38: throws IllegalArgumentException {
39: ParameterValidation.throwIllegalArgExceptionIfNullOrEmpty(
40: consumerAgent, "consumer agent", null);
41: char periodChar = '.';
42: int period = consumerAgent.indexOf(periodChar);
43: if (period != -1) {
44: consumerAgent = consumerAgent.substring(period);
45: period = consumerAgent.indexOf(periodChar);
46:
47: if (period != -1) {
48: return;
49: }
50: }
51: throw new IllegalArgumentException("'" + consumerAgent
52: + "' is not a valid Consumer Agent.");
53: }
54: }
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