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// Copyright (c) 2004 Brian Wellington (bwelling@xbill.org)
package org.xbill.DNS;
import java.io.*;
/**
* X25 - identifies the PSDN (Public Switched Data Network) address in the
* X.121 numbering plan associated with a name.
*
* @author Brian Wellington
*/
public class X25Record extends Record {
private static final long serialVersionUID = 4267576252335579764L;
private byte [] address;
X25Record() {}
Record
getObject() {
return new X25Record();
}
private static final byte []
checkAndConvertAddress(String address) {
int length = address.length();
byte [] out = new byte [length];
for (int i = 0; i < length; i++) {
char c = address.charAt(i);
if (!Character.isDigit(c))
return null;
out[i] = (byte) c;
}
return out;
}
/**
* Creates an X25 Record from the given data
* @param address The X.25 PSDN address.
* @throws IllegalArgumentException The address is not a valid PSDN address.
*/
public
X25Record(Name name, int dclass, long ttl, String address) {
super(name, Type.X25, dclass, ttl);
this.address = checkAndConvertAddress(address);
if (this.address == null) {
throw new IllegalArgumentException("invalid PSDN address " +
address);
}
}
void
rrFromWire(DNSInput in) throws IOException {
address = in.readCountedString();
}
void
rdataFromString(Tokenizer st, Name origin) throws IOException {
String addr = st.getString();
this.address = checkAndConvertAddress(addr);
if (this.address == null)
throw st.exception("invalid PSDN address " + addr);
}
/**
* Returns the X.25 PSDN address.
*/
public String
getAddress() {
return byteArrayToString(address, false);
}
void
rrToWire(DNSOutput out, Compression c, boolean canonical) {
out.writeCountedString(address);
}
String
rrToString() {
return byteArrayToString(address, true);
}
}
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