1 files changed, 0 insertions, 101 deletions
diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/DNSHelper.java b/src/main/java/de/thedevstack/conversationsplus/utils/DNSHelper.java
deleted file mode 100644
index 9481572d..00000000
--- a/src/main/java/de/thedevstack/conversationsplus/utils/DNSHelper.java
+++ /dev/null
@@ -1,101 +0,0 @@
-package de.thedevstack.conversationsplus.utils;
-
-import de.measite.minidns.Client;
-import de.measite.minidns.DNSMessage;
-import de.measite.minidns.Record;
-import de.measite.minidns.Record.TYPE;
-import de.measite.minidns.Record.CLASS;
-import de.measite.minidns.record.SRV;
-import de.measite.minidns.record.Data;
-import de.measite.minidns.util.NameUtil;
-
-import java.io.IOException;
-import java.net.InetAddress;
-import java.util.TreeSet;
-import java.util.regex.Pattern;
-
-import de.thedevstack.android.logcat.Logging;
-import de.thedevstack.conversationsplus.dto.SrvRecord;
-import de.thedevstack.conversationsplus.xmpp.jid.Jid;
-
-public class DNSHelper {
-    private static final String CLIENT_SRV_PREFIX = "_xmpp-client._tcp.";
-    private static final Pattern PATTERN_IPV4 = Pattern.compile("\\A(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z");
-    private static final Pattern PATTERN_IPV6_HEX4DECCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) ::((?:[0-9A-Fa-f]{1,4}:)*)(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z");
-    private static final Pattern PATTERN_IPV6_6HEX4DEC = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}:){6,6})(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z");
-    private static final Pattern PATTERN_IPV6_HEXCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)\\z");
-    private static final Pattern PATTERN_IPV6 = Pattern.compile("\\A(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}\\z");
-
-	protected static Client client = new Client();
-
-    /**
-     * Queries the SRV record for the server JID.
-     * This method uses all available Domain Name Servers.
-     * @param jid the server JID
-     * @return TreeSet with SrvRecords. If no SRV record is found for JID an empty TreeSet is returned.
-     */
-    public static final TreeSet<SrvRecord> querySrvRecord(Jid jid) {
-        String host = jid.getDomainpart();
-        String dns[] = client.findDNS();
-        TreeSet<SrvRecord> result = new TreeSet<>();
-
-        if (dns != null) {
-            for (String dnsserver : dns) {
-                result = querySrvRecord(host, dnsserver);
-                if (!result.isEmpty()) {
-                    break;
-                }
-            }
-        }
-
-        return result;
-    }
-
-    /**
-     * Queries the SRV record for an host from the given Domain Name Server.
-     * @param host the host to query for
-     * @param dnsserver the DNS to query on
-     * @return TreeSet with SrvRecords.
-     */
-    private static final TreeSet<SrvRecord> querySrvRecord(String host, String dnsserver) {
-        TreeSet<SrvRecord> result = new TreeSet<>();
-        try {
-            InetAddress dnsServerAddress = InetAddress.getByName(dnsserver);
-            String qname = CLIENT_SRV_PREFIX + host;
-            DNSMessage message = client.query(qname, TYPE.SRV, CLASS.IN, dnsServerAddress.getHostAddress());
-            Record[] rrset = message.getAnswers();
-            for (Record rr : rrset) {
-                Data d = rr.getPayload();
-                if (d instanceof SRV && NameUtil.idnEquals(qname, rr.getName())) {
-                    SRV srv = (SRV) d;
-                    SrvRecord srvRecord = new SrvRecord(srv.getPriority(), srv.getName(), srv.getPort());
-                    result.add(srvRecord);
-                }
-            }
-        } catch (IOException e) {
-            Logging.d("dns", "Error while retrieving SRV record for '" + host + "' from DNS '" + dnsserver + "': " + e.getMessage());
-        }
-        return result;
-    }
-
-    /**
-     * Checks whether the given server is an IP address or not.
-     * The following patterns are treated as valid IP addresses:
-     * <ul>
-     *     <li>{@link #PATTERN_IPV4}</li>
-     *     <li>{@link #PATTERN_IPV6}</li>
-     *     <li>{@link #PATTERN_IPV6_6HEX4DEC}</li>
-     *     <li>{@link #PATTERN_IPV6_HEX4DECCOMPRESSED}</li>
-     *     <li>{@link #PATTERN_IPV6_HEXCOMPRESSED}</li>
-     * </ul>
-     * @param server the string to check
-     * @return <code>true</code> if one of the patterns is matched <code>false</code> otherwise
-     */
-	public static boolean isIp(final String server) {
-		return PATTERN_IPV4.matcher(server).matches()
-				|| PATTERN_IPV6.matcher(server).matches()
-				|| PATTERN_IPV6_6HEX4DEC.matcher(server).matches()
-				|| PATTERN_IPV6_HEX4DECCOMPRESSED.matcher(server).matches()
-				|| PATTERN_IPV6_HEXCOMPRESSED.matcher(server).matches();
-	}
-}