Ejemplo n.º 1
0
 /**
  * Adds a record to the Zone
  *
  * @param r The record to be added
  * @see Record
  */
 public void addRecord(Record r) {
   Name name = r.getName();
   short type = r.getRRsetType();
   RRset rrset = (RRset) findExactSet(name, type);
   if (rrset == null) addSet(name, type, rrset = new RRset());
   rrset.addRR(r);
 }
Ejemplo n.º 2
0
  private Record parseRR(MyStringTokenizer st, boolean useLast, Record last, Name origin)
      throws IOException {
    Name name;
    int ttl;
    short type, dclass;

    if (!useLast) name = new Name(st.nextToken(), origin);
    else name = last.getName();

    String s = st.nextToken();

    try {
      ttl = TTL.parseTTL(s);
      s = st.nextToken();
    } catch (NumberFormatException e) {
      if (!useLast || last == null) ttl = defaultTTL;
      else ttl = last.getTTL();
    }

    if ((dclass = DClass.value(s)) > 0) s = st.nextToken();
    else dclass = DClass.IN;

    if ((type = Type.value(s)) < 0) throw new IOException("Parse error");

    return Record.fromString(name, type, dclass, ttl, st, origin);
  }
Ejemplo n.º 3
0
 /**
  * Determines if an RRset with the given name and type is already present in the given section.
  *
  * @see RRset
  * @see Section
  */
 public boolean findRRset(Name name, int type, int section) {
   if (sections[section] == null) return false;
   for (int i = 0; i < sections[section].size(); i++) {
     Record r = (Record) sections[section].get(i);
     if (r.getType() == type && name.equals(r.getName())) return true;
   }
   return false;
 }
Ejemplo n.º 4
0
 /**
  * Removes a record from the Zone
  *
  * @param r The record to be removed
  * @see Record
  */
 public void removeRecord(Record r) {
   Name name = r.getName();
   short type = r.getRRsetType();
   RRset rrset = (RRset) findExactSet(name, type);
   if (rrset != null) {
     rrset.deleteRR(r);
     if (rrset.size() == 0) removeSet(name, type, rrset);
   }
 }
Ejemplo n.º 5
0
  private final void maybeAddRecord(Record record) throws IOException {
    int rtype = record.getType();
    Name name = record.getName();

    if (rtype == Type.SOA && !name.equals(origin)) {
      throw new IOException("SOA owner " + name + " does not match zone origin " + origin);
    }
    if (name.subdomain(origin)) addRecord(record);
  }
Ejemplo n.º 6
0
 /**
  * Removes a record from the Zone
  *
  * @param r The record to be removed
  * @see Record
  */
 public void removeRecord(Record r) {
   Name name = r.getName();
   int rtype = r.getRRsetType();
   synchronized (this) {
     RRset rrset = findRRset(name, rtype);
     if (rrset == null) return;
     rrset.deleteRR(r);
     if (rrset.size() == 0) removeRRset(name, rtype);
   }
 }
Ejemplo n.º 7
0
 /**
  * Adds a Record to the Zone
  *
  * @param r The record to be added
  * @see Record
  */
 public void addRecord(Record r) {
   Name name = r.getName();
   int rtype = r.getRRsetType();
   synchronized (this) {
     RRset rrset = findRRset(name, rtype);
     if (rrset == null) {
       rrset = new RRset(r);
       addRRset(name, rrset);
     } else {
       rrset.addRR(r);
     }
   }
 }
Ejemplo n.º 8
0
 /**
  * Asynchronously sends a message to a single server, registering a listener to receive a callback
  * on success or exception. Multiple asynchronous lookups can be performed in parallel. Since the
  * callback may be invoked before the function returns, external synchronization is necessary.
  *
  * @param query The query to send
  * @param listener The object containing the callbacks.
  * @return An identifier, which is also a parameter in the callback
  */
 public Object sendAsync(final Message query, final ResolverListener listener) {
   final Object id;
   synchronized (this) {
     id = new Integer(uniqueID++);
   }
   Record question = query.getQuestion();
   String qname;
   if (question != null) qname = question.getName().toString();
   else qname = "(none)";
   String name = this.getClass() + ": " + qname;
   Thread thread = new ResolveThread(this, query, id, listener);
   thread.setName(name);
   thread.setDaemon(true);
   thread.start();
   return id;
 }
Ejemplo n.º 9
0
  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);
  }
Ejemplo n.º 10
0
 /**
  * Adds a record to the Cache.
  *
  * @param r The record to be added
  * @param cred The credibility of the record
  * @param o The source of the record (this could be a Message, for example)
  * @see Record
  */
 public void addRecord(Record r, byte cred, Object o) {
   Name name = r.getName();
   short type = r.getRRsetType();
   if (!Type.isRR(type)) return;
   boolean addrrset = false;
   Element element = (Element) findExactSet(name, type);
   if (element == null || cred > element.credibility) {
     RRset rrset = new RRset();
     rrset.addRR(r);
     addRRset(rrset, cred);
   } else if (cred == element.credibility) {
     if (element instanceof PositiveElement) {
       PositiveElement pe = (PositiveElement) element;
       pe.rrset.addRR(r);
     }
   }
 }
Ejemplo n.º 11
0
 private static boolean sameSet(Record r1, Record r2) {
   return (r1.getRRsetType() == r2.getRRsetType()
       && r1.getDClass() == r2.getDClass()
       && r1.getName().equals(r2.getName()));
 }
Ejemplo n.º 12
0
 private int uniqueID(Message m) {
   Record r = m.getQuestion();
   return (((r.getName().hashCode() & 0xFFFF) << 16)
       + (r.getType() + hashCode() << 8)
       + (hashCode() & 0xFF));
 }