01: /*
02: *
03: * Jsmtpd, Java SMTP daemon
04: * Copyright (C) 2005 Jean-Francois POUX, jf.poux@laposte.net
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU General Public License
08: * as published by the Free Software Foundation; either version 2
09: * 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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