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/*
This file is part of GNUnet.
(C) 2012, 2013 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
package org.gnunet.gns.records;
import com.google.common.net.InetAddresses;
import org.gnunet.construct.FixedSizeIntegerArray;
import org.gnunet.construct.UnionCase;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.UnknownHostException;
/**
* A DNS A Record.
*/
@UnionCase(1)
public class ARecordData implements RecordData {
@FixedSizeIntegerArray(length = 4, bitSize = 8, signed = false)
public byte[] addr;
@SuppressWarnings("UnusedDeclaration")
public static String recordTypeString = "A";
public static ARecordData fromString(String s) {
InetAddress addr = InetAddresses.forString(s);
byte[] addrBytes = addr.getAddress();
if (addrBytes.length != 4) {
return null;
}
ARecordData recordData = new ARecordData();
recordData.addr = addrBytes;
return recordData;
}
@Override
public String asRecordString() {
if (addr.length != 4) {
return null;
}
InetAddress inetAddress;
try {
inetAddress = Inet4Address.getByAddress(addr);
} catch (UnknownHostException e) {
return null;
}
return inetAddress.getHostAddress();
}
}
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