001: /*
002: * Licensed to the Apache Software Foundation (ASF) under one or more
003: * contributor license agreements. See the NOTICE file distributed with
004: * this work for additional information regarding copyright ownership.
005: * The ASF licenses this file to You under the Apache License, Version 2.0
006: * (the "License"); you may not use this file except in compliance with
007: * the License. You may obtain a copy of the License at
008: *
009: * http://www.apache.org/licenses/LICENSE-2.0
010: *
011: * Unless required by applicable law or agreed to in writing, software
012: * distributed under the License is distributed on an "AS IS" BASIS,
013: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014: * See the License for the specific language governing permissions and
015: * limitations under the License.
016: */
017: package org.apache.wicket.extensions.validation.validator;
018:
019: import org.apache.wicket.validation.validator.EmailAddressValidator;
020: import org.apache.wicket.validation.validator.PatternValidator;
021:
022: /**
023: * Validator for validating email addresses according to the RFC 822. This
024: * validator uses the regular expression taken from the Perl implementation of
025: * RFC 822.
026: *
027: * <p>
028: * <b>PLEATE NOTE!</b> Only use this validator if you really need it. The regex
029: * used is very big and generates a allocates 1-2Kb of memory per session.
030: *
031: * <p>
032: * Most users will be satisfied with the {@link EmailAddressValidator}
033: *
034: * @see <a href="http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html">Perl
035: * Regex implementation of RFC 822</a>
036: * @see <a href="http://www.ietf.org/rfc/rfc0822.txt?number=822">RFC 822</a>
037: * @author Frank Bille
038: */
039: public class RfcCompliantEmailAddressValidator extends PatternValidator {
040: private static final long serialVersionUID = 1L;
041:
042: private static final String emailPattern = "(?:(?:\\r\\n)?[ \\t])*(?:(?:(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t]"
043: + ")+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:"
044: + "\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:("
045: + "?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ "
046: + "\\t]))*\"(?:(?:\\r\\n)?[ \\t])*))*@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\0"
047: + "31]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\"
048: + "](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+"
049: + "(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:"
050: + "(?:\\r\\n)?[ \\t])*))*|(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z"
051: + "|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)"
052: + "?[ \\t])*)*\\<(?:(?:\\r\\n)?[ \\t])*(?:@(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\"
053: + "r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?["
054: + " \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)"
055: + "?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t]"
056: + ")*))*(?:,@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?["
057: + " \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*"
058: + ")(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t]"
059: + ")+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*)"
060: + "*:(?:(?:\\r\\n)?[ \\t])*)?(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+"
061: + "|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r"
062: + "\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:"
063: + "\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t"
064: + "]))*\"(?:(?:\\r\\n)?[ \\t])*))*@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031"
065: + "]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\]("
066: + "?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?"
067: + ":(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?"
068: + ":\\r\\n)?[ \\t])*))*\\>(?:(?:\\r\\n)?[ \\t])*)|(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?"
069: + ":(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?"
070: + "[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)*:(?:(?:\\r\\n)?[ \\t])*(?:(?:(?:[^()<>@,;:\\\".\\[\\] "
071: + "\\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|"
072: + "\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>"
073: + "@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\""
074: + "(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*))*@(?:(?:\\r\\n)?[ \\t]"
075: + ")*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\"
076: + "\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?"
077: + ":[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\["
078: + "\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*|(?:[^()<>@,;:\\\".\\[\\] \\000-"
079: + "\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|("
080: + "?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)*\\<(?:(?:\\r\\n)?[ \\t])*(?:@(?:[^()<>@,;"
081: + ":\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[(["
082: + "^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\""
083: + ".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\"
084: + "]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*(?:,@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\"
085: + "[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\"
086: + "r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] "
087: + "\\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]"
088: + "|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*)*:(?:(?:\\r\\n)?[ \\t])*)?(?:[^()<>@,;:\\\".\\[\\] \\0"
089: + "00-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\"
090: + ".|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,"
091: + ";:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\"(?"
092: + ":[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*))*@(?:(?:\\r\\n)?[ \\t])*"
093: + "(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\"."
094: + "\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:["
095: + "^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]"
096: + "]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*\\>(?:(?:\\r\\n)?[ \\t])*)(?:,\\s*("
097: + "?:(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\"
098: + "\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:("
099: + "?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=["
100: + "\\[\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t"
101: + "])*))*@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t"
102: + "])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?"
103: + ":\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|"
104: + "\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*|(?:"
105: + "[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\"
106: + "]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)*\\<(?:(?:\\r\\n)"
107: + "?[ \\t])*(?:@(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\""
108: + "()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)"
109: + "?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>"
110: + "@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*(?:,@(?:(?:\\r\\n)?["
111: + " \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,"
112: + ";:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t]"
113: + ")*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\"
114: + "\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*)*:(?:(?:\\r\\n)?[ \\t])*)?"
115: + "(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\"."
116: + "\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:"
117: + "\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\["
118: + "\"()<>@,;:\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])"
119: + "*))*@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])"
120: + "+|\\Z|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\"
121: + ".(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z"
122: + "|(?=[\\[\"()<>@,;:\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*\\>(?:("
123: + "?:\\r\\n)?[ \\t])*))*)?;\\s*)";
124:
125: /** Singleton instance */
126: private static final RfcCompliantEmailAddressValidator INSTANCE = new RfcCompliantEmailAddressValidator();
127:
128: /**
129: * @return Instance of RFC compliant emailaddress validator
130: */
131: public static RfcCompliantEmailAddressValidator getInstance() {
132: return INSTANCE;
133: }
134:
135: protected RfcCompliantEmailAddressValidator() {
136: super(emailPattern);
137: }
138: }
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