From 2bf63fc8d2a4b84e051d28e670c7c74b039e2545 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Wed, 25 Apr 2018 13:54:25 +0300
Subject: www: no more xmpp
---
.../java/com/juick/server/xmpp/s2s/DNSQueries.java | 65 ++++++++++++++++++++++
1 file changed, 65 insertions(+)
create mode 100644 juick-server/src/main/java/com/juick/server/xmpp/s2s/DNSQueries.java
(limited to 'juick-server/src/main/java/com/juick/server/xmpp/s2s/DNSQueries.java')
diff --git a/juick-server/src/main/java/com/juick/server/xmpp/s2s/DNSQueries.java b/juick-server/src/main/java/com/juick/server/xmpp/s2s/DNSQueries.java
new file mode 100644
index 00000000..1367d333
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/server/xmpp/s2s/DNSQueries.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see .
+ */
+
+package com.juick.server.xmpp.s2s;
+
+import org.apache.commons.lang3.math.NumberUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.net.InetSocketAddress;
+import java.util.Hashtable;
+import java.util.Random;
+import javax.naming.NamingException;
+import javax.naming.directory.Attribute;
+import javax.naming.directory.DirContext;
+import javax.naming.directory.InitialDirContext;
+
+/**
+ *
+ * @author ugnich
+ */
+public class DNSQueries {
+
+ private static final Logger logger = LoggerFactory.getLogger(DNSQueries.class);
+
+ private static Random rand = new Random();
+
+ public static InetSocketAddress getServerAddress(String hostname) {
+
+ String host = hostname;
+ int port = 5269;
+
+ Hashtable env = new Hashtable<>(5);
+ env.put("java.naming.factory.initial", "com.sun.jndi.dns.DnsContextFactory");
+ try {
+ DirContext ctx = new InitialDirContext(env);
+ Attribute att = ctx.getAttributes("_xmpp-server._tcp." + hostname, new String[]{"SRV"}).get("SRV");
+
+ if (att != null && att.size() > 0) {
+ int i = rand.nextInt(att.size());
+ String srv[] = att.get(i).toString().split(" ");
+ port = NumberUtils.toInt(srv[2], 5269);
+ host = srv[3];
+ }
+ ctx.close();
+ } catch (NamingException e) {
+ logger.debug("SRV record for {} is not resolved, falling back to A record", hostname);
+ }
+ return new InetSocketAddress(host, port);
+ }
+}
--
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