/**
* Looks up Records in the Zone. This follows CNAMEs and wildcards.
*
* @param name The name to look up
* @param type The type to look up
* @return A SetResponse object
* @see SetResponse
*/
public SetResponse findRecords(Name name, short type) {
SetResponse zr = null;
Object o = findSets(name, type);
if (o == null) {
/* The name does not exist */
if (name.isWild()) return SetResponse.ofType(SetResponse.NXDOMAIN);
int labels = name.labels() - origin.labels();
if (labels == 0) return SetResponse.ofType(SetResponse.NXDOMAIN);
if (hasWild) {
SetResponse sr;
Name tname = name;
do {
sr = findRecords(tname.wild(1), type);
if (!sr.isNXDOMAIN()) return sr;
tname = new Name(tname, 1);
} while (labels-- >= 1);
return sr;
} else return SetResponse.ofType(SetResponse.NXDOMAIN);
}
if (o instanceof TypeMap) {
/* The name exists but the type does not. */
return SetResponse.ofType(SetResponse.NXRRSET);
}
Object[] objects;
RRset rrset;
if (o instanceof RRset) {
objects = null;
rrset = (RRset) o;
} else {
objects = (Object[]) o;
rrset = (RRset) objects[0];
}
if (name.equals(rrset.getName())) {
if (type != Type.CNAME && type != Type.ANY && rrset.getType() == Type.CNAME)
zr = new SetResponse(SetResponse.CNAME, rrset);
else if (rrset.getType() == Type.NS && !name.equals(origin))
zr = new SetResponse(SetResponse.DELEGATION, rrset);
else {
zr = new SetResponse(SetResponse.SUCCESSFUL);
zr.addRRset(rrset);
if (objects != null) {
for (int i = 1; i < objects.length; i++) zr.addRRset((RRset) objects[i]);
}
}
} else {
if (rrset.getType() == Type.CNAME) return SetResponse.ofType(SetResponse.NXDOMAIN);
else if (rrset.getType() == Type.DNAME) {
zr = new SetResponse(SetResponse.DNAME, rrset);
} else if (rrset.getType() == Type.NS) {
zr = new SetResponse(SetResponse.DELEGATION, rrset);
}
}
return zr;
}
private synchronized void addRRset(Name name, RRset rrset) {
if (!hasWild && name.isWild()) hasWild = true;
Object types = data.get(name);
if (types == null) {
data.put(name, rrset);
return;
}
int rtype = rrset.getType();
if (types instanceof List) {
List list = (List) types;
for (int i = 0; i < list.size(); i++) {
RRset set = (RRset) list.get(i);
if (set.getType() == rtype) {
list.set(i, rrset);
return;
}
}
list.add(rrset);
} else {
RRset set = (RRset) types;
if (set.getType() == rtype) data.put(name, rrset);
else {
LinkedList list = new LinkedList();
list.add(set);
list.add(rrset);
data.put(name, list);
}
}
}
/** Adds a set associated with a name/type. The data contained in the set is abstract. */
protected void addSet(Name name, short type, TypedObject set) {
if (!hasWild && name.isWild()) hasWild = true;
super.addSet(name, type, set);
}