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Java > Open Source Codes > org > columba > ristretto > smtp > parser > SMTPResponseParser


1 /* ***** BEGIN LICENSE BLOCK *****
2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Mozilla Public License Version
5  * 1.1 (the "License"); you may not use this file except in compliance with
6  * the License. You may obtain a copy of the License at
7  * http://www.mozilla.org/MPL/
8  *
9  * Software distributed under the License is distributed on an "AS IS" basis,
10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11  * for the specific language governing rights and limitations under the
12  * License.
13  *
14  * The Original Code is Ristretto Mail API.
15  *
16  * The Initial Developers of the Original Code are
17  * Timo Stich and Frederik Dietz.
18  * Portions created by the Initial Developers are Copyright (C) 2004
19  * All Rights Reserved.
20  *
21  * Contributor(s):
22  *
23  * Alternatively, the contents of this file may be used under the terms of
24  * either the GNU General Public License Version 2 or later (the "GPL"), or
25  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
26  * in which case the provisions of the GPL or the LGPL are applicable instead
27  * of those above. If you wish to allow use of your version of this file only
28  * under the terms of either the GPL or the LGPL, and not to allow others to
29  * use your version of this file under the terms of the MPL, indicate your
30  * decision by deleting the provisions above and replace them with the notice
31  * and other provisions required by the GPL or the LGPL. If you do not delete
32  * the provisions above, a recipient may use your version of this file under
33  * the terms of any one of the MPL, the GPL or the LGPL.
34  *
35  * ***** END LICENSE BLOCK ***** */
36 package org.columba.ristretto.smtp.parser;
37
38 import java.util.regex.Matcher JavaDoc;
39 import java.util.regex.Pattern JavaDoc;
40
41 import org.columba.ristretto.parser.ParserException;
42 import org.columba.ristretto.smtp.SMTPResponse;
43
44 /**
45  * Parses a response line from a SMTP server.
46  *
47  * @author Timo Stich <tstich@users.sourceforge.net>
48  */
49 public class SMTPResponseParser {
50
51         private static final Pattern JavaDoc responsePattern =
52             Pattern.compile("(\\d+)" + // group 1 = response code
53 "(-| )?" + // group 2 = hyphen
54 "([^\r\n]+)?\r\n"); // group 3 = response message
55
56         private static final Pattern JavaDoc greetingPattern =
57             Pattern.compile("^([^\\s]*)" + // group 1 = domain
58 " ?(.*)$"); // group 2 = message
59
60     /**
61      * Parses a response line from a SMTP server. This line is finished with a
62      * CR LF and interpreted like defined in RFC2821.
63      *
64      * @see SMTPResponse
65      *
66      * @param in
67      * the reponse line
68      * @return the parse response
69      * @throws ParserException
70      */
71     public static SMTPResponse parse(CharSequence JavaDoc in) throws ParserException {
72         Matcher JavaDoc matcher = responsePattern.matcher(in);
73         if (matcher.matches()) {
74             int code = Integer.parseInt(matcher.group(1));
75             if (code != 220) {
76                 return new SMTPResponse(
77                     code,
78                     matcher.group(2) != null
79                         ? matcher.group(2).equals("-")
80                         : false,
81                     matcher.group(3));
82             } else {
83                 // find domain
84 Matcher JavaDoc greetingMatcher =
85                     greetingPattern.matcher(matcher.group(3));
86                 if (greetingMatcher.matches()) {
87                     return new SMTPResponse(
88                         code,
89                         matcher.group(2) != null
90                             ? matcher.group(2).equals("-")
91                             : false,
92                         greetingMatcher.group(2),
93                         greetingMatcher.group(1));
94
95                 } else {
96                     throw new ParserException(in.toString());
97                 }
98             }
99         }
100
101         throw new ParserException(in.toString());
102     }
103
104 }
105
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