IDNSResolver


1   /*
2    * 
3    * Jsmtpd, Java SMTP daemon
4    * Copyright (C) 2005  Jean-Francois POUX, jf.poux@laposte.net
5    *
6    * This program is free software; you can redistribute it and/or
7    * modify it under the terms of the GNU General Public License
8    * as published by the Free Software Foundation; either version 2
9    * of the License, or (at your option) any later version.
10   *
11   * This program is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   * GNU General Public License for more details.
15   *
16   * You should have received a copy of the GNU General Public License
17   * along with this program; if not, write to the Free Software
18   * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19   *
20   */
21  package org.jsmtpd.core.common.dnsService;
22  
23  import java.net.InetAddress  ;
24  import java.util.List  ;
25  
26  import org.jsmtpd.core.common.IGenericPlugin;
27  
28  /**
29   * DNS resolving service<br>
30   * handles MX requests
31   * @see org.jsmtpd.plugins.dnsServices.DNSJavaResolver
32   * @author Jean-Francois POUX
33   */
34  public interface IDNSResolver extends IGenericPlugin {
35  
36      /**
37       * 
38       * @param name domain name of rcpt
39       * @return a list containing the ip addresse of th MX servers, firts => top priority, last => lowest priority
40       * 
41       */
42      public List  <InetAddress  > doMXLookup(String   name);
43  
44      /**
45       * Checks if a domain name exists
46       * @param name the domain name to check
47       * @return true if exists, false if not
48       */
49  
50      public boolean exists(String   name);
51  
52      /**
53       * Resolve to ip address
54       * @param name the domain name to check
55       * @return the ip address of the domain name, null if it does not exists
56       */
57      public InetAddress   doLookupToIp(String   name);
58  
59      /**
60       * Reverse lookup of an ip addr to domain name
61       * @param in ip adress
62       * @return the domain name
63       */
64      public String   doReverseLookup(InetAddress   in);
65  
66  }
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