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Change-Id: I49ce97136c17173c4ae3965c694af6e7bc49897d

1 files changed, 300 insertions, 0 deletions

diff --git a/src/org/xbill/DNS/Update.java b/src/org/xbill/DNS/Update.java
new file mode 100644
index 0000000..02a920b
--- /dev/null
+++ b/src/org/xbill/DNS/Update.java
@@ -0,0 +1,300 @@
+// Copyright (c) 2003-2004 Brian Wellington (bwelling@xbill.org)
+
+package org.xbill.DNS;
+
+import java.io.*;
+import java.util.*;
+
+/**
+ * A helper class for constructing dynamic DNS (DDNS) update messages.
+ *
+ * @author Brian Wellington
+ */
+
+public class Update extends Message {
+
+private Name origin;
+private int dclass;
+
+/**
+ * Creates an update message.
+ * @param zone The name of the zone being updated.
+ * @param dclass The class of the zone being updated.
+ */
+public
+Update(Name zone, int dclass) {
+	super();
+	if (!zone.isAbsolute())
+		throw new RelativeNameException(zone);
+	DClass.check(dclass);
+        getHeader().setOpcode(Opcode.UPDATE);
+	Record soa = Record.newRecord(zone, Type.SOA, DClass.IN);
+	addRecord(soa, Section.QUESTION);
+	this.origin = zone;
+	this.dclass = dclass;
+}
+
+/**
+ * Creates an update message.  The class is assumed to be IN.
+ * @param zone The name of the zone being updated.
+ */
+public
+Update(Name zone) {
+	this(zone, DClass.IN);
+}
+
+private void
+newPrereq(Record rec) {
+	addRecord(rec, Section.PREREQ);
+}
+
+private void
+newUpdate(Record rec) {
+	addRecord(rec, Section.UPDATE);
+}
+
+/**
+ * Inserts a prerequisite that the specified name exists; that is, there
+ * exist records with the given name in the zone.
+ */
+public void
+present(Name name) {
+	newPrereq(Record.newRecord(name, Type.ANY, DClass.ANY, 0));
+}
+
+/**
+ * Inserts a prerequisite that the specified rrset exists; that is, there
+ * exist records with the given name and type in the zone.
+ */
+public void
+present(Name name, int type) {
+	newPrereq(Record.newRecord(name, type, DClass.ANY, 0));
+}
+
+/**
+ * Parses a record from the string, and inserts a prerequisite that the
+ * record exists.  Due to the way value-dependent prequisites work, the
+ * condition that must be met is that the set of all records with the same 
+ * and type in the update message must be identical to the set of all records
+ * with that name and type on the server.
+ * @throws IOException The record could not be parsed.
+ */
+public void
+present(Name name, int type, String record) throws IOException {
+	newPrereq(Record.fromString(name, type, dclass, 0, record, origin));
+}
+
+/**
+ * Parses a record from the tokenizer, and inserts a prerequisite that the
+ * record exists.  Due to the way value-dependent prequisites work, the
+ * condition that must be met is that the set of all records with the same 
+ * and type in the update message must be identical to the set of all records
+ * with that name and type on the server.
+ * @throws IOException The record could not be parsed.
+ */
+public void
+present(Name name, int type, Tokenizer tokenizer) throws IOException {
+	newPrereq(Record.fromString(name, type, dclass, 0, tokenizer, origin));
+}
+
+/**
+ * Inserts a prerequisite that the specified record exists.  Due to the way
+ * value-dependent prequisites work, the condition that must be met is that
+ * the set of all records with the same and type in the update message must
+ * be identical to the set of all records with that name and type on the server.
+ */
+public void
+present(Record record) {
+	newPrereq(record);
+}
+
+/**
+ * Inserts a prerequisite that the specified name does not exist; that is,
+ * there are no records with the given name in the zone.
+ */
+public void
+absent(Name name) {
+	newPrereq(Record.newRecord(name, Type.ANY, DClass.NONE, 0));
+}
+
+/**
+ * Inserts a prerequisite that the specified rrset does not exist; that is,
+ * there are no records with the given name and type in the zone.
+ */
+public void
+absent(Name name, int type) {
+	newPrereq(Record.newRecord(name, type, DClass.NONE, 0));
+}
+
+/**
+ * Parses a record from the string, and indicates that the record
+ * should be inserted into the zone.
+ * @throws IOException The record could not be parsed.
+ */
+public void
+add(Name name, int type, long ttl, String record) throws IOException {
+	newUpdate(Record.fromString(name, type, dclass, ttl, record, origin));
+}
+
+/**
+ * Parses a record from the tokenizer, and indicates that the record
+ * should be inserted into the zone.
+ * @throws IOException The record could not be parsed.
+ */
+public void
+add(Name name, int type, long ttl, Tokenizer tokenizer) throws IOException {
+	newUpdate(Record.fromString(name, type, dclass, ttl, tokenizer,
+				    origin));
+}
+
+/**
+ * Indicates that the record should be inserted into the zone.
+ */
+public void
+add(Record record) {
+	newUpdate(record);
+}
+
+/**
+ * Indicates that the records should be inserted into the zone.
+ */
+public void
+add(Record [] records) {
+	for (int i = 0; i < records.length; i++)
+		add(records[i]);
+}
+
+/**
+ * Indicates that all of the records in the rrset should be inserted into the
+ * zone.
+ */
+public void
+add(RRset rrset) {
+	for (Iterator it = rrset.rrs(); it.hasNext(); )
+		add((Record) it.next());
+}
+
+/**
+ * Indicates that all records with the given name should be deleted from
+ * the zone.
+ */
+public void
+delete(Name name) {
+	newUpdate(Record.newRecord(name, Type.ANY, DClass.ANY, 0));
+}
+
+/**
+ * Indicates that all records with the given name and type should be deleted
+ * from the zone.
+ */
+public void
+delete(Name name, int type) {
+	newUpdate(Record.newRecord(name, type, DClass.ANY, 0));
+}
+
+/**
+ * Parses a record from the string, and indicates that the record
+ * should be deleted from the zone.
+ * @throws IOException The record could not be parsed.
+ */
+public void
+delete(Name name, int type, String record) throws IOException {
+	newUpdate(Record.fromString(name, type, DClass.NONE, 0, record,
+				    origin));
+}
+
+/**
+ * Parses a record from the tokenizer, and indicates that the record
+ * should be deleted from the zone.
+ * @throws IOException The record could not be parsed.
+ */
+public void
+delete(Name name, int type, Tokenizer tokenizer) throws IOException {
+	newUpdate(Record.fromString(name, type, DClass.NONE, 0, tokenizer,
+				    origin));
+}
+
+/**
+ * Indicates that the specified record should be deleted from the zone.
+ */
+public void
+delete(Record record) {
+	newUpdate(record.withDClass(DClass.NONE, 0));
+}
+
+/**
+ * Indicates that the records should be deleted from the zone.
+ */
+public void
+delete(Record [] records) {
+	for (int i = 0; i < records.length; i++)
+		delete(records[i]);
+}
+
+/**
+ * Indicates that all of the records in the rrset should be deleted from the
+ * zone.
+ */
+public void
+delete(RRset rrset) {
+	for (Iterator it = rrset.rrs(); it.hasNext(); )
+		delete((Record) it.next());
+}
+
+/**
+ * Parses a record from the string, and indicates that the record
+ * should be inserted into the zone replacing any other records with the
+ * same name and type.
+ * @throws IOException The record could not be parsed.
+ */
+public void
+replace(Name name, int type, long ttl, String record) throws IOException {
+	delete(name, type);
+	add(name, type, ttl, record);
+}
+
+/**
+ * Parses a record from the tokenizer, and indicates that the record
+ * should be inserted into the zone replacing any other records with the
+ * same name and type.
+ * @throws IOException The record could not be parsed.
+ */
+public void
+replace(Name name, int type, long ttl, Tokenizer tokenizer) throws IOException
+{
+	delete(name, type);
+	add(name, type, ttl, tokenizer);
+}
+
+/**
+ * Indicates that the record should be inserted into the zone replacing any
+ * other records with the same name and type.
+ */
+public void
+replace(Record record) {
+	delete(record.getName(), record.getType());
+	add(record);
+}
+
+/**
+ * Indicates that the records should be inserted into the zone replacing any
+ * other records with the same name and type as each one.
+ */
+public void
+replace(Record [] records) {
+	for (int i = 0; i < records.length; i++)
+		replace(records[i]);
+}
+
+/**
+ * Indicates that all of the records in the rrset should be inserted into the
+ * zone replacing any other records with the same name and type.
+ */
+public void
+replace(RRset rrset) {
+	delete(rrset.getName(), rrset.getType());
+	for (Iterator it = rrset.rrs(); it.hasNext(); )
+		add((Record) it.next());
+}
+
+}