Coverage Report - org.seasar.cubby.validator.validators.EmailValidator
 
Classes in this File Line Coverage Branch Coverage Complexity
EmailValidator
96%
69/72
90%
43/48
0
 
 1  
 /*
 2  
  * Copyright 2004-2008 the Seasar Foundation and the Others.
 3  
  *
 4  
  * Licensed under the Apache License, Version 2.0 (the "License");
 5  
  * you may not use this file except in compliance with the License.
 6  
  * You may obtain a copy of the License at
 7  
  *
 8  
  *     http://www.apache.org/licenses/LICENSE-2.0
 9  
  *
 10  
  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
 12  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 13  
  * either express or implied. See the License for the specific language
 14  
  * governing permissions and limitations under the License.
 15  
  */
 16  
 package org.seasar.cubby.validator.validators;
 17  
 
 18  
 import java.util.ArrayList;
 19  
 import java.util.List;
 20  
 import java.util.regex.Matcher;
 21  
 import java.util.regex.Pattern;
 22  
 
 23  
 import org.seasar.cubby.validator.MessageHelper;
 24  
 import org.seasar.cubby.validator.ScalarFieldValidator;
 25  
 import org.seasar.cubby.validator.ValidationContext;
 26  
 import org.seasar.framework.util.StringUtil;
 27  
 
 28  
 /**
 29  
  * Eメールアドレスに対する検証を行います。
 30  
  * <p>
 31  
  * デフォルトエラーメッセージキー:valid.email
 32  
  * </p>
 33  
  * 
 34  
  * @author agata
 35  
  * @author baba
 36  
  * @since 1.0.0
 37  
  */
 38  
 public class EmailValidator implements ScalarFieldValidator {
 39  
 
 40  
         private static final String SPECIAL_CHARS = "\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
 41  
         private static final String VALID_CHARS = "[^\\s" + SPECIAL_CHARS + "]";
 42  
         private static final String QUOTED_USER = "(\"[^\"]*\")";
 43  
         private static final String ATOM = VALID_CHARS + '+';
 44  
         private static final String WORD = "(" + ATOM + "|" + QUOTED_USER + ")";
 45  
 
 46  
         private static final String LEGAL_ASCII_PATTERN = "^[\\x00-\\x7F]+$";
 47  
         private static final String EMAIL_PATTERN = "^(.+)@(.+)$";
 48  
         private static final String IP_DOMAIN_PATTERN = "^(\\d{1,3})[.](\\d{1,3})[.](\\d{1,3})[.](\\d{1,3})$";
 49  
 
 50  
         private static final String USER_PATTERN = "^" + WORD + "(\\." + WORD
 51  
                         + ")*$";
 52  
         private static final String DOMAIN_PATTERN = "^" + ATOM + "(\\." + ATOM
 53  
                         + ")*$";
 54  
         private static final String ATOM_PATTERN = "(" + ATOM + ")";
 55  
 
 56  
         /**
 57  
          * メッセージヘルパ。
 58  
          */
 59  
         private final MessageHelper messageHelper;
 60  
 
 61  
         /**
 62  
          * コンストラクタ
 63  
          */
 64  
         public EmailValidator() {
 65  1
                 this("valid.email");
 66  1
         }
 67  
 
 68  
         /**
 69  
          * メッセージキーを指定するコンストラクタ
 70  
          * 
 71  
          * @param messageKey
 72  
          */
 73  1
         public EmailValidator(final String messageKey) {
 74  1
                 this.messageHelper = new MessageHelper(messageKey);
 75  1
         }
 76  
 
 77  
         /**
 78  
          * {@inheritDoc}
 79  
          */
 80  
         public void validate(final ValidationContext context, final Object value) {
 81  16
                 if (value == null) {
 82  1
                         return;
 83  
                 }
 84  15
                 if (value instanceof String) {
 85  15
                         final String email = (String) value;
 86  15
                         if (StringUtil.isEmpty(email)) {
 87  1
                                 return;
 88  
                         }
 89  
 
 90  14
                         boolean match = !email.endsWith(".");
 91  14
                         if (match) {
 92  13
                                 final Pattern pattern = Pattern.compile(LEGAL_ASCII_PATTERN);
 93  13
                                 final Matcher matchAsciiPat = pattern.matcher(email);
 94  13
                                 match = matchAsciiPat.matches();
 95  
                         }
 96  
 
 97  14
                         if (match) {
 98  12
                                 final Pattern pattern = Pattern.compile(EMAIL_PATTERN);
 99  12
                                 final Matcher matcher = pattern.matcher(email);
 100  12
                                 match = matcher.find();
 101  12
                                 if (match) {
 102  10
                                         if (isValidUser(matcher.group(1))
 103  
                                                         && isValidDomain(matcher.group(2))) {
 104  3
                                                 return;
 105  
                                         }
 106  
                                 }
 107  
                         }
 108  
                 }
 109  
 
 110  11
                 context.addMessageInfo(this.messageHelper.createMessageInfo());
 111  11
         }
 112  
 
 113  
         private boolean isValidDomain(final String domain) {
 114  8
                 Pattern pattern = Pattern.compile(IP_DOMAIN_PATTERN);
 115  8
                 final Matcher ipAddressMatcher = pattern.matcher(domain);
 116  
 
 117  8
                 if (ipAddressMatcher.find()) {
 118  2
                         if (isValidIpAddress(ipAddressMatcher)) {
 119  1
                                 return true;
 120  
                         }
 121  
                 } else {
 122  6
                         pattern = Pattern.compile(DOMAIN_PATTERN);
 123  6
                         final Matcher domainMatcher = pattern.matcher(domain);
 124  6
                         if (domainMatcher.matches()) {
 125  6
                                 if (isValidSymbolicDomain(domain)) {
 126  2
                                         return true;
 127  
                                 }
 128  
                         }
 129  
                 }
 130  5
                 return false;
 131  
         }
 132  
 
 133  
         private boolean isValidUser(final String user) {
 134  10
                 final Pattern pattern = Pattern.compile(USER_PATTERN);
 135  10
                 final Matcher userMatcher = pattern.matcher(user);
 136  10
                 return userMatcher.matches();
 137  
         }
 138  
 
 139  
         private boolean isValidIpAddress(final Matcher ipAddressMatcher) {
 140  9
                 for (int i = 1; i <= 4; i++) {
 141  8
                         final String ipSegment = ipAddressMatcher.group(i);
 142  8
                         if (ipSegment == null || ipSegment.length() <= 0) {
 143  0
                                 return false;
 144  
                         }
 145  
 
 146  8
                         int iIpSegment = 0;
 147  
 
 148  
                         try {
 149  8
                                 iIpSegment = Integer.parseInt(ipSegment);
 150  0
                         } catch (final NumberFormatException e) {
 151  0
                                 return false;
 152  8
                         }
 153  
 
 154  8
                         if (iIpSegment > 255) {
 155  1
                                 return false;
 156  
                         }
 157  
 
 158  
                 }
 159  1
                 return true;
 160  
         }
 161  
 
 162  
         private boolean isValidSymbolicDomain(final String domain) {
 163  6
                 final List<String> domainSegments = new ArrayList<String>();
 164  6
                 boolean match = true;
 165  
 
 166  6
                 final Pattern pattern = Pattern.compile(ATOM_PATTERN);
 167  
                 String domainSegment;
 168  6
                 String currentDomain = domain;
 169  23
                 while (match) {
 170  17
                         final Matcher atomMatcher = pattern.matcher(currentDomain);
 171  17
                         match = atomMatcher.find();
 172  17
                         if (match) {
 173  11
                                 domainSegment = atomMatcher.group(1);
 174  11
                                 domainSegments.add(domainSegment);
 175  11
                                 final int domainSegmentLength = domainSegment.length() + 1;
 176  11
                                 currentDomain = domainSegmentLength >= currentDomain.length() ? ""
 177  
                                                 : currentDomain.substring(domainSegmentLength);
 178  
                         }
 179  17
                 }
 180  
 
 181  6
                 final int size = domainSegments.size();
 182  6
                 if (size > 0) {
 183  6
                         final String end = domainSegments.get(size - 1);
 184  6
                         if (end.length() < 2 || end.length() > 4) {
 185  2
                                 return false;
 186  
                         }
 187  
                 }
 188  
 
 189  4
                 if (size < 2) {
 190  2
                         return false;
 191  
                 }
 192  
 
 193  2
                 return true;
 194  
         }
 195  
 
 196  
 }