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authorShuyi Chen <shuyichen@google.com>2013-05-22 14:51:55 -0700
committerShuyi Chen <shuyichen@google.com>2013-05-22 17:19:30 -0700
commitd7955ce24d294fb2014c59d11fca184471056f44 (patch)
treee260500b0b7639127038495d46a0ad6dcbb6d96c /src/org/xbill/DNS/RRset.java
parent8f4ce9ea0de51fee918bffe19c434612d6bbb2d7 (diff)
downloadsmack-d7955ce24d294fb2014c59d11fca184471056f44.tar.gz
Add android smack source.HEADandroid-wear-5.0.0_r1android-sdk-4.4.2_r1.0.1android-sdk-4.4.2_r1android-l-preview_r2android-cts-5.1_r9android-cts-5.1_r8android-cts-5.1_r7android-cts-5.1_r6android-cts-5.1_r5android-cts-5.1_r4android-cts-5.1_r3android-cts-5.1_r28android-cts-5.1_r27android-cts-5.1_r26android-cts-5.1_r25android-cts-5.1_r24android-cts-5.1_r23android-cts-5.1_r22android-cts-5.1_r21android-cts-5.1_r20android-cts-5.1_r2android-cts-5.1_r19android-cts-5.1_r18android-cts-5.1_r17android-cts-5.1_r16android-cts-5.1_r15android-cts-5.1_r14android-cts-5.1_r13android-cts-5.1_r10android-cts-5.1_r1android-cts-5.0_r9android-cts-5.0_r8android-cts-5.0_r7android-cts-5.0_r6android-cts-5.0_r5android-cts-5.0_r4android-cts-5.0_r3android-cts-4.4_r4android-cts-4.4_r1android-5.1.1_r9android-5.1.1_r8android-5.1.1_r7android-5.1.1_r6android-5.1.1_r5android-5.1.1_r4android-5.1.1_r38android-5.1.1_r37android-5.1.1_r36android-5.1.1_r35android-5.1.1_r34android-5.1.1_r33android-5.1.1_r30android-5.1.1_r3android-5.1.1_r29android-5.1.1_r28android-5.1.1_r26android-5.1.1_r25android-5.1.1_r24android-5.1.1_r23android-5.1.1_r22android-5.1.1_r20android-5.1.1_r2android-5.1.1_r19android-5.1.1_r18android-5.1.1_r17android-5.1.1_r16android-5.1.1_r15android-5.1.1_r14android-5.1.1_r13android-5.1.1_r12android-5.1.1_r10android-5.1.1_r1android-5.1.0_r5android-5.1.0_r4android-5.1.0_r3android-5.1.0_r1android-5.0.2_r3android-5.0.2_r1android-5.0.1_r1android-5.0.0_r7android-5.0.0_r6android-5.0.0_r5.1android-5.0.0_r5android-5.0.0_r4android-5.0.0_r3android-5.0.0_r2android-5.0.0_r1android-4.4w_r1android-4.4_r1.2.0.1android-4.4_r1.2android-4.4_r1.1.0.1android-4.4_r1.1android-4.4_r1.0.1android-4.4_r1android-4.4_r0.9android-4.4_r0.8android-4.4_r0.7android-4.4.4_r2.0.1android-4.4.4_r2android-4.4.4_r1.0.1android-4.4.4_r1android-4.4.3_r1.1.0.1android-4.4.3_r1.1android-4.4.3_r1.0.1android-4.4.3_r1android-4.4.2_r2.0.1android-4.4.2_r2android-4.4.2_r1.0.1android-4.4.2_r1android-4.4.1_r1.0.1android-4.4.1_r1android-4.3_r3.1android-4.3_r3android-4.3_r2.3android-4.3_r2.2android-4.3_r2.1android-4.3_r2android-4.3_r1.1android-4.3_r1android-4.3_r0.9.1android-4.3_r0.9android-4.3.1_r1tools_r22.2mastermainlollipop-wear-releaselollipop-releaselollipop-mr1-wfc-releaselollipop-mr1-releaselollipop-mr1-fi-releaselollipop-mr1-devlollipop-mr1-cts-releaselollipop-devlollipop-cts-releasel-previewkitkat-wearkitkat-releasekitkat-mr2.2-releasekitkat-mr2.1-releasekitkat-mr2-releasekitkat-mr1.1-releasekitkat-mr1-releasekitkat-devkitkat-cts-releasekitkat-cts-devjb-mr2.0.0-releasejb-mr2.0-releasejb-mr2-releasejb-mr2-devidea133-weekly-releaseidea133
Change-Id: I49ce97136c17173c4ae3965c694af6e7bc49897d
Diffstat (limited to 'src/org/xbill/DNS/RRset.java')
-rw-r--r--src/org/xbill/DNS/RRset.java258
1 files changed, 258 insertions, 0 deletions
diff --git a/src/org/xbill/DNS/RRset.java b/src/org/xbill/DNS/RRset.java
new file mode 100644
index 0000000..fa1a6ad
--- /dev/null
+++ b/src/org/xbill/DNS/RRset.java
@@ -0,0 +1,258 @@
+// Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org)
+
+package org.xbill.DNS;
+
+import java.io.Serializable;
+import java.util.*;
+
+/**
+ * A set of Records with the same name, type, and class. Also included
+ * are all RRSIG records signing the data records.
+ * @see Record
+ * @see RRSIGRecord
+ *
+ * @author Brian Wellington
+ */
+
+public class RRset implements Serializable {
+
+private static final long serialVersionUID = -3270249290171239695L;
+
+/*
+ * rrs contains both normal and RRSIG records, with the RRSIG records
+ * at the end.
+ */
+private List rrs;
+private short nsigs;
+private short position;
+
+/** Creates an empty RRset */
+public
+RRset() {
+ rrs = new ArrayList(1);
+ nsigs = 0;
+ position = 0;
+}
+
+/** Creates an RRset and sets its contents to the specified record */
+public
+RRset(Record record) {
+ this();
+ safeAddRR(record);
+}
+
+/** Creates an RRset with the contents of an existing RRset */
+public
+RRset(RRset rrset) {
+ synchronized (rrset) {
+ rrs = (List) ((ArrayList)rrset.rrs).clone();
+ nsigs = rrset.nsigs;
+ position = rrset.position;
+ }
+}
+
+private void
+safeAddRR(Record r) {
+ if (!(r instanceof RRSIGRecord)) {
+ if (nsigs == 0)
+ rrs.add(r);
+ else
+ rrs.add(rrs.size() - nsigs, r);
+ } else {
+ rrs.add(r);
+ nsigs++;
+ }
+}
+
+/** Adds a Record to an RRset */
+public synchronized void
+addRR(Record r) {
+ if (rrs.size() == 0) {
+ safeAddRR(r);
+ return;
+ }
+ Record first = first();
+ if (!r.sameRRset(first))
+ throw new IllegalArgumentException("record does not match " +
+ "rrset");
+
+ if (r.getTTL() != first.getTTL()) {
+ if (r.getTTL() > first.getTTL()) {
+ r = r.cloneRecord();
+ r.setTTL(first.getTTL());
+ } else {
+ for (int i = 0; i < rrs.size(); i++) {
+ Record tmp = (Record) rrs.get(i);
+ tmp = tmp.cloneRecord();
+ tmp.setTTL(r.getTTL());
+ rrs.set(i, tmp);
+ }
+ }
+ }
+
+ if (!rrs.contains(r))
+ safeAddRR(r);
+}
+
+/** Deletes a Record from an RRset */
+public synchronized void
+deleteRR(Record r) {
+ if (rrs.remove(r) && (r instanceof RRSIGRecord))
+ nsigs--;
+}
+
+/** Deletes all Records from an RRset */
+public synchronized void
+clear() {
+ rrs.clear();
+ position = 0;
+ nsigs = 0;
+}
+
+private synchronized Iterator
+iterator(boolean data, boolean cycle) {
+ int size, start, total;
+
+ total = rrs.size();
+
+ if (data)
+ size = total - nsigs;
+ else
+ size = nsigs;
+ if (size == 0)
+ return Collections.EMPTY_LIST.iterator();
+
+ if (data) {
+ if (!cycle)
+ start = 0;
+ else {
+ if (position >= size)
+ position = 0;
+ start = position++;
+ }
+ } else {
+ start = total - nsigs;
+ }
+
+ List list = new ArrayList(size);
+ if (data) {
+ list.addAll(rrs.subList(start, size));
+ if (start != 0)
+ list.addAll(rrs.subList(0, start));
+ } else {
+ list.addAll(rrs.subList(start, total));
+ }
+
+ return list.iterator();
+}
+
+/**
+ * Returns an Iterator listing all (data) records.
+ * @param cycle If true, cycle through the records so that each Iterator will
+ * start with a different record.
+ */
+public synchronized Iterator
+rrs(boolean cycle) {
+ return iterator(true, cycle);
+}
+
+/**
+ * Returns an Iterator listing all (data) records. This cycles through
+ * the records, so each Iterator will start with a different record.
+ */
+public synchronized Iterator
+rrs() {
+ return iterator(true, true);
+}
+
+/** Returns an Iterator listing all signature records */
+public synchronized Iterator
+sigs() {
+ return iterator(false, false);
+}
+
+/** Returns the number of (data) records */
+public synchronized int
+size() {
+ return rrs.size() - nsigs;
+}
+
+/**
+ * Returns the name of the records
+ * @see Name
+ */
+public Name
+getName() {
+ return first().getName();
+}
+
+/**
+ * Returns the type of the records
+ * @see Type
+ */
+public int
+getType() {
+ return first().getRRsetType();
+}
+
+/**
+ * Returns the class of the records
+ * @see DClass
+ */
+public int
+getDClass() {
+ return first().getDClass();
+}
+
+/** Returns the ttl of the records */
+public synchronized long
+getTTL() {
+ return first().getTTL();
+}
+
+/**
+ * Returns the first record
+ * @throws IllegalStateException if the rrset is empty
+ */
+public synchronized Record
+first() {
+ if (rrs.size() == 0)
+ throw new IllegalStateException("rrset is empty");
+ return (Record) rrs.get(0);
+}
+
+private String
+iteratorToString(Iterator it) {
+ StringBuffer sb = new StringBuffer();
+ while (it.hasNext()) {
+ Record rr = (Record) it.next();
+ sb.append("[");
+ sb.append(rr.rdataToString());
+ sb.append("]");
+ if (it.hasNext())
+ sb.append(" ");
+ }
+ return sb.toString();
+}
+
+/** Converts the RRset to a String */
+public String
+toString() {
+ if (rrs == null)
+ return ("{empty}");
+ StringBuffer sb = new StringBuffer();
+ sb.append("{ ");
+ sb.append(getName() + " ");
+ sb.append(getTTL() + " ");
+ sb.append(DClass.string(getDClass()) + " ");
+ sb.append(Type.string(getType()) + " ");
+ sb.append(iteratorToString(iterator(true, false)));
+ if (nsigs > 0) {
+ sb.append(" sigs: ");
+ sb.append(iteratorToString(iterator(false, false)));
+ }
+ sb.append(" }");
+ return sb.toString();
+}
+
+}