private final void maybeAddRecord(Record record, Cache cache, Object source) throws IOException {
int type = record.getType();
Name name = record.getName();
if (type == Type.SOA) {
if (!name.equals(origin))
throw new IOException("SOA owner " + name + " does not match zone origin " + origin);
else {
setOrigin(origin);
dclass = record.getDClass();
}
}
if (origin == null && type != Type.SOA)
throw new IOException("non-SOA record seen at " + name + " with no origin set");
if (name.subdomain(origin)) addRecord(record);
else if (cache != null) cache.addRecord(record, Credibility.GLUE, source);
}
/**
* Creates a Zone by performing a zone transfer to the specified host. All records that do not
* belong in the Zone are added to the specified Cache.
*
* @see Cache
* @see Master
*/
public Zone(Name zone, short dclass, String remote, Cache cache) throws IOException {
super(false);
origin = zone;
this.dclass = dclass;
type = SECONDARY;
Resolver res = new SimpleResolver(remote);
Record rec = Record.newRecord(zone, Type.AXFR, dclass);
Message query = Message.newQuery(rec);
Message response = res.send(query);
Record[] recs = response.getSectionArray(Section.ANSWER);
for (int i = 0; i < recs.length; i++) {
if (!recs[i].getName().subdomain(origin)) {
if (Options.check("verbose"))
System.err.println(recs[i].getName() + "is not in zone " + origin);
continue;
}
addRecord(recs[i]);
}
if (cache != null) {
recs = response.getSectionArray(Section.ADDITIONAL);
for (int i = 0; i < recs.length; i++) cache.addRecord(recs[i], Credibility.GLUE, recs);
}
validate();
}
