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/*
* Copyright (C) 2014 Andrew Comminos
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package se.lublin.humla.model;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.Log;
import com.google.common.net.InetAddresses;
import org.minidns.hla.ResolverApi;
import org.minidns.hla.SrvResolverResult;
import org.minidns.record.SRV;
import org.minidns.util.SrvUtil;
import java.io.IOException;
import java.util.List;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
import se.lublin.humla.Constants;
public class Server implements Parcelable {
private long mId;
private String mName;
private String mHost;
private int mPort;
private String mUsername;
private String mPassword;
private String mResolvedHost = null;
private int mResolvedPort;
public static final Parcelable.Creator<Server> CREATOR = new Parcelable.Creator<Server>() {
@Override
public Server createFromParcel(Parcel parcel) {
return new Server(parcel);
}
@Override
public Server[] newArray(int i) {
return new Server[i];
}
};
public Server(long id, String name, String host, int port, String username, String password) {
mId = id;
mName = name;
mHost = host;
mPort = port;
mUsername = username;
mPassword = password;
mResolvedHost = null;
}
private Server(Parcel in) {
readFromParcel(in);
}
@Override
public void writeToParcel(Parcel parcel, int i) {
parcel.writeLong(mId);
parcel.writeString(mName);
parcel.writeString(mHost);
parcel.writeInt(mPort);
parcel.writeString(mUsername);
parcel.writeString(mPassword);
}
private void readFromParcel(Parcel in) {
mId = in.readLong();
mName = in.readString();
mHost = in.readString();
mPort = in.readInt();
mUsername = in.readString();
mPassword = in.readString();
mResolvedHost = null;
}
@Override
public int describeContents() {
return 0;
}
public long getId() {
return mId;
}
public void setId(long id) {
mId = id;
}
/**
* Returns a user-defined name for the server, or the host if the user-defined name is not set.
* @return A user readable name for the server.
*/
public String getName() {
return (mName != null && mName.length() > 0) ? mName : mHost;
}
public void setName(String mName) {
this.mName = mName;
}
public String getHost() {
return mHost;
}
public void setHost(String mHost) {
this.mHost = mHost;
this.mResolvedHost = null;
}
public int getPort() {
return mPort;
}
public void setPort(int mPort) {
this.mPort = mPort;
this.mResolvedHost = null;
}
public String getUsername() {
return mUsername;
}
public void setUsername(String mUsername) {
this.mUsername = mUsername;
}
public String getPassword() {
return mPassword;
}
public void setPassword(String mPassword) {
this.mPassword = mPassword;
}
/**
* Returns whether or not the server is stored in a database.
* @return true if the server's ID is in the database.
*/
public boolean isSaved() {
return mId != -1;
}
public String getSrvHost() {
srvResolve();
return mResolvedHost;
}
public int getSrvPort() {
srvResolve();
return mResolvedPort;
}
private synchronized void srvResolve() {
if (mResolvedHost != null) {
return;
}
// if we have a port then don't bother with SRV
if (mPort != 0) {
mResolvedHost = mHost;
mResolvedPort = mPort;
return;
}
if (InetAddresses.isInetAddress(mHost)) {
mResolvedHost = mHost;
mResolvedPort = Constants.DEFAULT_PORT;
return;
}
// set to our fallback values in case of no SRV or resolve fail
final AtomicReference<String> srvHost = new AtomicReference<>(mHost);
final AtomicInteger srvPort = new AtomicInteger(Constants.DEFAULT_PORT);
try {
Thread t = new Thread(new Runnable() {
@Override
public void run() {
try {
final String lookup = "_mumble._tcp." + srvHost.get();
SrvResolverResult res = ResolverApi.INSTANCE.resolveSrv(lookup);
if (!res.wasSuccessful()) {
Log.d(Constants.TAG, "resolveSrv " + lookup + ": " + res.getResponseCode());
return;
}
Set<SRV> answers = res.getAnswersOrEmptySet();
if (answers.isEmpty()) {
Log.d(Constants.TAG, "resolveSrv " + lookup + ": empty answer");
return;
}
List<SRV> srvs = SrvUtil.sortSrvRecords(answers);
for (SRV srv : srvs) {
Log.d(Constants.TAG, "resolved " + lookup + " SRV: " + srv.toString());
srvHost.set(srv.target.toString());
srvPort.set(srv.port);
// TODO SRV just picking the first record.
return;
}
} catch (IOException e) {
Log.d(Constants.TAG, "resolveSRV() run() " + e);
}
}
});
t.start();
t.join();
}
catch (Exception e) {
Log.d(Constants.TAG, "resolveSRV() " + e);
}
mResolvedHost = srvHost.get();
mResolvedPort = srvPort.get();
}
}
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