1   /**
2    * Copyright (c) 2000-2007 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.network.util;
24  
25  import com.liferay.portal.kernel.util.StringMaker;
26  import com.liferay.portal.util.WebCacheable;
27  import com.liferay.portlet.network.model.DNSLookup;
28  import com.liferay.util.ConverterException;
29  import com.liferay.util.Time;
30  
31  import java.net.InetAddress;
32  
33  /**
34   * <a href="DNSLookupConverter.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Brian Wing Shun Chan
37   *
38   */
39  public class DNSLookupConverter implements WebCacheable {
40  
41      public DNSLookupConverter(String domain) {
42          _domain = domain;
43      }
44  
45      public Object convert(String id) throws ConverterException {
46          DNSLookup dnsLookup = null;
47  
48          try {
49              String results = null;
50  
51              char[] array = _domain.trim().toCharArray();
52  
53              for (int i = 0; i < array.length; i++) {
54                  if ((array[i] != '.') && !Character.isDigit(array[i])) {
55                      InetAddress ia = InetAddress.getByName(_domain);
56  
57                      results = ia.getHostAddress();
58  
59                      break;
60                  }
61              }
62  
63              if (results == null) {
64                  StringMaker sm = new StringMaker();
65  
66                  InetAddress[] ia = InetAddress.getAllByName(_domain);
67  
68                  for (int i = 0; i < ia.length; i++) {
69                      sm.append(ia[i].getHostName());
70  
71                      if (i + 1 <= ia.length) {
72                          sm.append(",");
73                      }
74                  }
75  
76                  results = sm.toString();
77              }
78  
79              dnsLookup = new DNSLookup(_domain, results);
80          }
81          catch (Exception e) {
82              throw new ConverterException(_domain + " " + e.toString());
83          }
84  
85          return dnsLookup;
86      }
87  
88      public long getRefreshTime() {
89          return _REFRESH_TIME;
90      }
91  
92      private static final long _REFRESH_TIME = Time.DAY;
93  
94      private String _domain;
95  
96  }