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// Copyright (c) 2004 Brian Wellington (bwelling@xbill.org)
package org.xbill.DNS;
import java.io.*;
import org.xbill.DNS.utils.*;
/**
* NSAP Address Record.
*
* @author Brian Wellington
*/
public class NSAPRecord extends Record {
private static final long serialVersionUID = -1037209403185658593L;
private byte [] address;
NSAPRecord() {}
Record
getObject() {
return new NSAPRecord();
}
private static final byte []
checkAndConvertAddress(String address) {
if (!address.substring(0, 2).equalsIgnoreCase("0x")) {
return null;
}
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
boolean partial = false;
int current = 0;
for (int i = 2; i < address.length(); i++) {
char c = address.charAt(i);
if (c == '.') {
continue;
}
int value = Character.digit(c, 16);
if (value == -1) {
return null;
}
if (partial) {
current += value;
bytes.write(current);
partial = false;
} else {
current = value << 4;
partial = true;
}
}
if (partial) {
return null;
}
return bytes.toByteArray();
}
/**
* Creates an NSAP Record from the given data
* @param address The NSAP address.
* @throws IllegalArgumentException The address is not a valid NSAP address.
*/
public
NSAPRecord(Name name, int dclass, long ttl, String address) {
super(name, Type.NSAP, dclass, ttl);
this.address = checkAndConvertAddress(address);
if (this.address == null) {
throw new IllegalArgumentException("invalid NSAP address " +
address);
}
}
void
rrFromWire(DNSInput in) throws IOException {
address = in.readByteArray();
}
void
rdataFromString(Tokenizer st, Name origin) throws IOException {
String addr = st.getString();
this.address = checkAndConvertAddress(addr);
if (this.address == null)
throw st.exception("invalid NSAP address " + addr);
}
/**
* Returns the NSAP address.
*/
public String
getAddress() {
return byteArrayToString(address, false);
}
void
rrToWire(DNSOutput out, Compression c, boolean canonical) {
out.writeByteArray(address);
}
String
rrToString() {
return "0x" + base16.toString(address);
}
}
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