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// Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org)
package org.xbill.DNS;
import java.io.*;
/**
* Next SECure name - this record contains the following name in an
* ordered list of names in the zone, and a set of types for which
* records exist for this name. The presence of this record in a response
* signifies a negative response from a DNSSEC-signed zone.
*
* This replaces the NXT record.
*
* @author Brian Wellington
* @author David Blacka
*/
public class NSECRecord extends Record {
private static final long serialVersionUID = -5165065768816265385L;
private Name next;
private TypeBitmap types;
NSECRecord() {}
Record
getObject() {
return new NSECRecord();
}
/**
* Creates an NSEC Record from the given data.
* @param next The following name in an ordered list of the zone
* @param types An array containing the types present.
*/
public
NSECRecord(Name name, int dclass, long ttl, Name next, int [] types) {
super(name, Type.NSEC, dclass, ttl);
this.next = checkName("next", next);
for (int i = 0; i < types.length; i++) {
Type.check(types[i]);
}
this.types = new TypeBitmap(types);
}
void
rrFromWire(DNSInput in) throws IOException {
next = new Name(in);
types = new TypeBitmap(in);
}
void
rrToWire(DNSOutput out, Compression c, boolean canonical) {
// Note: The next name is not lowercased.
next.toWire(out, null, false);
types.toWire(out);
}
void
rdataFromString(Tokenizer st, Name origin) throws IOException {
next = st.getName(origin);
types = new TypeBitmap(st);
}
/** Converts rdata to a String */
String
rrToString()
{
StringBuffer sb = new StringBuffer();
sb.append(next);
if (!types.empty()) {
sb.append(' ');
sb.append(types.toString());
}
return sb.toString();
}
/** Returns the next name */
public Name
getNext() {
return next;
}
/** Returns the set of types defined for this name */
public int []
getTypes() {
return types.toArray();
}
/** Returns whether a specific type is in the set of types. */
public boolean
hasType(int type) {
return types.contains(type);
}
}
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