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1 package org.apache.turbine.util.validation; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache Turbine" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache Turbine", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>;. 55 */ 56 57 58 /*** 59 * @author <a href="mailto:mikeh@ncsa.uiuc.edu">Mike Haberman</a> 60 * @version $Id: EmailValidator.java,v 1.1.1.1 2001/08/16 05:10:04 jvanzyl Exp $ 61 * 62 * 63 */ 64 public class EmailValidator extends InputValidator 65 { 66 /*** 67 * default Constructor, 68 */ 69 public EmailValidator() 70 { 71 super(false, NoMaxSize, EmptyArgv); 72 } 73 74 /*** 75 * @param String input, input to be checked 76 */ 77 protected void check(String input) 78 throws Exception 79 { 80 // the only two checks: 81 // 1. @ must be present 82 // 2. must end in '.extension' 83 84 int idx = input.indexOf("@"); 85 if (idx == -1) 86 { 87 throw new Exception("Missing @"); 88 } 89 90 idx = input.lastIndexOf("."); 91 if (idx == -1) 92 { 93 throw new Exception("Missing .{top level domain} suffix"); 94 } 95 96 String domain = input.substring(idx); 97 if (domain.length() < 3) 98 { 99 throw new Exception("Invalid .{top level domain} suffix"); 100 } 101 } 102 103 /*** 104 * @return String, the expected format of the input 105 */ 106 public String getExpectedFormat() 107 { 108 return "name@domain.topLevelDomain"; 109 } 110 }

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