Import project

10 files changed, 1021 insertions, 0 deletions

diff --git a/src/Main.java b/src/Main.java
new file mode 100644
index 000000000..6c3eb0915
--- /dev/null
+++ b/src/Main.java
@@ -0,0 +1,11 @@
+import net.sourceforge.opentracking.Daemon;
+
+public class Main {
+
+    public static void main(String[] args) throws Exception {
+
+        Daemon service = new Daemon();
+        service.init(args);
+        service.start();
+    }
+}
diff --git a/src/net/sourceforge/opentracking/Daemon.java b/src/net/sourceforge/opentracking/Daemon.java
new file mode 100644
index 000000000..aff742fa0
--- /dev/null
+++ b/src/net/sourceforge/opentracking/Daemon.java
@@ -0,0 +1,180 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package net.sourceforge.opentracking;
+
+import java.util.List;
+import java.util.LinkedList;
+import java.util.Properties;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.sql.DriverManager;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import net.sourceforge.opentracking.helper.NamedParameterStatement;
+import org.jboss.netty.handler.codec.frame.FixedLengthFrameDecoder;
+import org.jboss.netty.handler.codec.string.StringDecoder;
+import net.sourceforge.opentracking.protocol.xexun.XexunFrameDecoder;
+import net.sourceforge.opentracking.protocol.xexun.XexunProtocolDecoder;
+
+/**
+ * Daemon
+ */
+public class Daemon implements DataManager {
+
+    /**
+     * Server list
+     */
+    private List serverList;
+
+    public Daemon() {
+        serverList = new LinkedList();
+    }
+
+    /**
+     * Init
+     */
+    public void init(String[] arguments)
+            throws IOException, ClassNotFoundException, SQLException {
+
+        // Load properties
+        Properties properties = new Properties();
+        properties.loadFromXML(new FileInputStream(arguments[0]));
+        //properties.loadFromXML(Daemon.class.getResourceAsStream("/configuration.xml"));
+
+        initDatabase(properties);
+        initXexunServer(properties);
+    }
+
+    /**
+     * Database connection
+     */
+    private Connection connection;
+
+    private NamedParameterStatement selectDevice;
+
+    private NamedParameterStatement insertPosition;
+
+    /**
+     * Init database
+     */
+    private void initDatabase(Properties properties)
+            throws ClassNotFoundException, SQLException {
+
+        // Load driver
+        String driver = properties.getProperty("database.driver");
+        if (driver != null) {
+            Class.forName(driver);
+        }
+
+        // Connect database
+        String url = properties.getProperty("database.url");
+        String user = properties.getProperty("database.user");
+        String password = properties.getProperty("database.password");
+
+        if (user != null && password != null) {
+            connection = DriverManager.getConnection(url, user, password);
+        } else {
+            connection = DriverManager.getConnection(url);
+        }
+
+        // Init statements
+        String selectDeviceQuery = properties.getProperty("database.selectDevice");
+        if (selectDeviceQuery != null) {
+            selectDevice = new NamedParameterStatement(connection, selectDeviceQuery);
+        }
+
+        String insertPositionQuery = properties.getProperty("database.insertPosition");
+        if (insertPositionQuery != null) {
+            insertPosition = new NamedParameterStatement(connection, insertPositionQuery);
+        }
+    }
+
+    public synchronized List readDevice() throws SQLException {
+
+        List deviceList = new LinkedList();
+
+        ResultSet result = selectDevice.executeQuery();
+        while (result.next()) {
+            Device device = new Device();
+            device.setId(result.getLong("id"));
+            device.setImei(result.getString("imei"));
+            deviceList.add(device);
+        }
+
+        return deviceList;
+    }
+
+    public synchronized void writePosition(Position position) throws SQLException {
+
+        insertPosition.setInt("device_id", position.getDeviceId().intValue());
+        insertPosition.setTimestamp("time", position.getTime());
+        insertPosition.setBoolean("valid", position.getValid());
+        insertPosition.setDouble("latitude", position.getLatitude());
+        insertPosition.setDouble("longitude", position.getLongitude());
+        insertPosition.setDouble("speed", position.getSpeed());
+        insertPosition.setDouble("course", position.getCourse());
+
+        insertPosition.executeUpdate();
+    }
+
+    /**
+     * Init Xexun server
+     */
+    public void initXexunServer(Properties properties) throws SQLException {
+
+        boolean enable = Boolean.valueOf(properties.getProperty("xexun.enable"));
+        if (enable) {
+
+            TrackerServer server = new TrackerServer(
+                    Integer.valueOf(properties.getProperty("xexun.port")));
+
+            server.getPipeline().addLast("frameDecoder", new XexunFrameDecoder());
+            server.getPipeline().addLast("stringDecoder", new StringDecoder());
+            server.getPipeline().addLast("objectDecoder", new XexunProtocolDecoder(this));
+
+            server.getPipeline().addLast("handler", new TrackerEventHandler(this));
+
+            serverList.add(server);
+        }
+    }
+
+    /**
+     * Start
+     */
+    public void start() {
+        for (Object server: serverList) {
+            ((TrackerServer) server).start();
+        }
+    }
+
+    /**
+     * Stop
+     */
+    public void stop() {
+        for (Object server: serverList) {
+            ((TrackerServer) server).stop();
+        }
+    }
+
+    /**
+     * Destroy
+     */
+    public void destroy() {
+        serverList.clear();
+    }
+
+}
diff --git a/src/net/sourceforge/opentracking/DataManager.java b/src/net/sourceforge/opentracking/DataManager.java
new file mode 100644
index 000000000..ed4523d9f
--- /dev/null
+++ b/src/net/sourceforge/opentracking/DataManager.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package net.sourceforge.opentracking;
+
+import java.util.List;
+import java.sql.SQLException;
+
+/**
+ * Data manager
+ */
+public interface DataManager {
+
+    /**
+     * Get device list
+     */
+    public List readDevice() throws SQLException;
+
+    /**
+     * Write position
+     */
+    public void writePosition(Position position) throws SQLException;
+
+}
diff --git a/src/net/sourceforge/opentracking/Device.java b/src/net/sourceforge/opentracking/Device.java
new file mode 100644
index 000000000..9c949b6ca
--- /dev/null
+++ b/src/net/sourceforge/opentracking/Device.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package net.sourceforge.opentracking;
+
+/**
+ * Device
+ */
+public class Device {
+
+    /**
+     * Id
+     */
+    private Long id;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long newId) {
+        id = newId;
+    }
+
+    /**
+     * International mobile equipment identity (IMEI)
+     */
+    private String imei;
+
+    public String getImei() {
+        return imei;
+    }
+
+    public void setImei(String newImei) {
+        imei = newImei;
+    }
+
+}
diff --git a/src/net/sourceforge/opentracking/Position.java b/src/net/sourceforge/opentracking/Position.java
new file mode 100644
index 000000000..0e20c22c1
--- /dev/null
+++ b/src/net/sourceforge/opentracking/Position.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package net.sourceforge.opentracking;
+
+import java.util.Date;
+
+/**
+ * Position information
+ */
+public class Position {
+
+    /**
+     * Id
+     */
+    private Long id;
+    
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long newId) {
+        id = newId;
+    }
+
+    /**
+     * Device
+     */
+    private Long deviceId;
+
+    public Long getDeviceId() {
+        return deviceId;
+    }
+
+    public void setDeviceId(Long newDeviceId) {
+        deviceId = newDeviceId;
+    }
+
+    /**
+     * Time (UTC)
+     */
+    private Date time;
+
+    public Date getTime() {
+        return time;
+    }
+
+    public void setTime(Date newTime) {
+        time = newTime;
+    }
+
+    /**
+     * Validity flag
+     */
+    private Boolean valid;
+
+    public Boolean getValid() {
+        return valid;
+    }
+
+    public void setValid(Boolean newValid) {
+        valid = newValid;
+    }
+
+    /**
+     * Latitude
+     */
+    private Double latitude;
+
+    public Double getLatitude() {
+        return latitude;
+    }
+
+    public void setLatitude(Double newLatitude) {
+        latitude = newLatitude;
+    }
+
+    /**
+     * Longitude
+     */
+    private Double longitude;
+
+    public Double getLongitude() {
+        return longitude;
+    }
+
+    public void setLongitude(Double newLongitude) {
+        longitude = newLongitude;
+    }
+
+    /**
+     * Speed (knots)
+     */
+    private Double speed;
+
+    public Double getSpeed() {
+        return speed;
+    }
+
+    public void setSpeed(Double newSpeed) {
+        speed = newSpeed;
+    }
+
+    /**
+     * Course
+     */
+    private Double course;
+
+    public Double getCourse() {
+        return course;
+    }
+
+    public void setCourse(Double newCourse) {
+        course = newCourse;
+    }
+
+}
diff --git a/src/net/sourceforge/opentracking/TrackerEventHandler.java b/src/net/sourceforge/opentracking/TrackerEventHandler.java
new file mode 100644
index 000000000..845ba650c
--- /dev/null
+++ b/src/net/sourceforge/opentracking/TrackerEventHandler.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package net.sourceforge.opentracking;
+
+import org.jboss.netty.channel.SimpleChannelHandler;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.channel.ExceptionEvent;
+import org.jboss.netty.channel.MessageEvent;
+import org.jboss.netty.channel.ChannelPipelineCoverage;
+import java.sql.SQLException;
+
+/**
+ * Tracker message handler
+ */
+@ChannelPipelineCoverage("all")
+public class TrackerEventHandler extends SimpleChannelHandler {
+
+    /**
+     * Data manager
+     */
+    private DataManager dataManager;
+
+    TrackerEventHandler(DataManager newDataManager) {
+        super();
+        dataManager = newDataManager;
+    }
+
+    @Override
+    public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) {
+
+        System.out.println("message recieved");
+
+        if (e.getMessage() instanceof Position) {
+
+            // Write position to database
+            try {
+                dataManager.writePosition((Position) e.getMessage());
+            } catch (Exception error) {
+                System.out.println("write error");
+            }
+        }
+    }
+
+    @Override
+    public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) {
+        System.out.println("error: " + e.getCause().getMessage());
+        e.getChannel().close();
+    }
+
+}
diff --git a/src/net/sourceforge/opentracking/TrackerServer.java b/src/net/sourceforge/opentracking/TrackerServer.java
new file mode 100644
index 000000000..76e5b1bbf
--- /dev/null
+++ b/src/net/sourceforge/opentracking/TrackerServer.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package net.sourceforge.opentracking;
+
+import java.net.InetSocketAddress;
+import java.util.concurrent.Executors;
+import org.jboss.netty.bootstrap.ServerBootstrap;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
+import org.jboss.netty.channel.group.ChannelGroup;
+import org.jboss.netty.channel.group.DefaultChannelGroup;
+import org.jboss.netty.channel.group.ChannelGroupFuture;
+import org.jboss.netty.channel.SimpleChannelHandler;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.channel.ChannelStateEvent;
+import org.jboss.netty.channel.ChannelPipelineCoverage;
+
+/**
+ * Tracker server
+ */
+public class TrackerServer extends ServerBootstrap {
+
+    /**
+     * Open channel handler
+     */
+    @ChannelPipelineCoverage("all")
+    protected class OpenChannelHandler extends SimpleChannelHandler {
+
+        TrackerServer server;
+
+        public OpenChannelHandler(TrackerServer newServer) {
+            server = newServer;
+        }
+
+        @Override
+        public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent e) {
+            System.out.println("connected: " + e.getChannel().getRemoteAddress());
+            server.getChannelGroup().add(e.getChannel());
+        }
+    }
+
+    /**
+     * Initialization
+     */
+    private void init(Integer port, Integer threadPoolSize) {
+        
+        setPort(port);
+
+        // Create channel factory
+        setFactory(new NioServerSocketChannelFactory(
+                Executors.newFixedThreadPool(threadPoolSize),
+                Executors.newFixedThreadPool(threadPoolSize)));
+
+        // Add open channel handler
+        getPipeline().addLast("openHandler", new OpenChannelHandler(this));
+    }
+
+    public TrackerServer(Integer port) {
+        init(port, 1);
+    }
+
+    /**
+     * Server port
+     */
+    private Integer port;
+
+    public Integer getPort() {
+        return port;
+    }
+
+    private void setPort(Integer newPort) {
+        port = newPort;
+    }
+
+    /**
+     * Opened channels
+     */
+    private ChannelGroup allChannels = new DefaultChannelGroup();
+
+    public ChannelGroup getChannelGroup() {
+        return allChannels;
+    }
+    
+    /**
+     * Start server
+     */
+    public void start() {
+        Channel channel = bind(new InetSocketAddress(getPort()));
+        getChannelGroup().add(channel);
+    }
+    
+    /**
+     * Stop server
+     */
+    public void stop() {
+        ChannelGroupFuture future = getChannelGroup().close();
+        future.awaitUninterruptibly();
+        getFactory().releaseExternalResources();
+    }
+
+}
diff --git a/src/net/sourceforge/opentracking/helper/NamedParameterStatement.java b/src/net/sourceforge/opentracking/helper/NamedParameterStatement.java
new file mode 100644
index 000000000..2480a15e2
--- /dev/null
+++ b/src/net/sourceforge/opentracking/helper/NamedParameterStatement.java
@@ -0,0 +1,181 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package net.sourceforge.opentracking.helper;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Timestamp;
+
+import java.util.Map;
+import java.util.HashMap;
+import java.util.List;
+import java.util.LinkedList;
+import java.util.Date;
+
+public class NamedParameterStatement {
+
+    /**
+     * Native statement
+     */
+    private final PreparedStatement statement;
+
+    /**
+     * Index mapping
+     */
+    private final Map indexMap;
+
+    /**
+     * Initialize statement
+     */
+    public NamedParameterStatement(Connection connection, String query)
+            throws SQLException {
+
+        indexMap = new HashMap();
+        String parsedQuery = parse(query, indexMap);
+        statement = connection.prepareStatement(parsedQuery);
+    }
+
+    /**
+     * Parse query
+     */
+    static final String parse(String query, Map paramMap) {
+
+        int length = query.length();
+        StringBuffer parsedQuery = new StringBuffer(length);
+        boolean inSingleQuote = false;
+        boolean inDoubleQuote = false;
+        int index = 1;
+
+        for(int i = 0; i < length; i++) {
+
+            char c = query.charAt(i);
+
+            // String end
+            if (inSingleQuote) {
+                if (c == '\'') inSingleQuote = false;
+            } else if (inDoubleQuote) {
+                if (c == '"') inDoubleQuote = false;
+            } else {
+
+                // String begin
+                if (c == '\'') {
+                    inSingleQuote = true;
+                } else if (c == '"') {
+                    inDoubleQuote = true;
+                } else if (c == ':' && i + 1 < length &&
+                        Character.isJavaIdentifierStart(query.charAt(i + 1))) {
+
+                    // Identifier name
+                    int j = i + 2;
+                    while (j < length && Character.isJavaIdentifierPart(query.charAt(j))) j++;
+
+                    String name = query.substring(i + 1, j);
+                    c = '?';
+                    i += name.length();
+
+                    // Add to list
+                    List indexList = (List) paramMap.get(name);
+                    if (indexList == null) {
+                        indexList = new LinkedList();
+                        paramMap.put(name, indexList);
+                    }
+                    indexList.add(new Integer(index));
+
+                    index++;
+                }
+            }
+
+            parsedQuery.append(c);
+        }
+
+        return parsedQuery.toString();
+    }
+
+    /**
+     * Execute query with result
+     */
+    public ResultSet executeQuery() throws SQLException {
+        return statement.executeQuery();
+    }
+
+
+    /**
+     * Executes query without result
+     */
+    public int executeUpdate() throws SQLException {
+        return statement.executeUpdate();
+    }
+
+    /**
+     * Immediately closes the statement
+     */
+    public void close() throws SQLException {
+        statement.close();
+    }
+
+    /**
+     * Set a parameter
+     */
+    /*public void setObject(String name, Object value) throws SQLException {
+
+        List indexList = (List) indexMap.get(name);
+        if (indexList != null) {
+            for (Object index: indexList) {
+                statement.setObject((Integer) index, value);
+            }
+        }
+        else {
+            throw new IllegalArgumentException();
+        }
+    }*/
+
+    public void setInt(String name, int value) throws SQLException {
+
+        List indexList = (List) indexMap.get(name);
+        for (Object index: indexList) {
+            statement.setInt((Integer) index, value);
+        }
+    }
+
+    public void setBoolean(String name, boolean value) throws SQLException {
+
+        List indexList = (List) indexMap.get(name);
+        for (Object index: indexList) {
+            statement.setBoolean((Integer) index, value);
+        }
+    }
+
+    public void setDouble(String name, double value) throws SQLException {
+
+        List indexList = (List) indexMap.get(name);
+        for (Object index: indexList) {
+            statement.setDouble((Integer) index, value);
+        }
+    }
+
+    public void setTimestamp(String name, Date value) throws SQLException {
+
+        List indexList = (List) indexMap.get(name);
+        for (Object index: indexList) {
+            statement.setTimestamp(
+                    (Integer) index,
+                    new Timestamp(value.getTime()));
+        }
+    }
+
+}
diff --git a/src/net/sourceforge/opentracking/protocol/xexun/XexunFrameDecoder.java b/src/net/sourceforge/opentracking/protocol/xexun/XexunFrameDecoder.java
new file mode 100644
index 000000000..338c7bec9
--- /dev/null
+++ b/src/net/sourceforge/opentracking/protocol/xexun/XexunFrameDecoder.java
@@ -0,0 +1,105 @@
+/*
+ * Минимум - 100
+ * Начало - (10 цифр) + ','
+ * Длина 16 x ','
+ */
+
+package net.sourceforge.opentracking.protocol.xexun;
+
+import org.jboss.netty.handler.codec.frame.FrameDecoder;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.buffer.ChannelBuffer;
+
+/**
+ * 
+ */
+public class XexunFrameDecoder extends FrameDecoder {
+
+    protected Object decode(
+            ChannelHandlerContext ctx,
+            Channel channel,
+            ChannelBuffer buf) throws Exception {
+
+        System.out.println("read: " + buf.readableBytes());
+
+        // Check minimum length
+        int length = buf.readableBytes();
+        if (length < 100) {
+            return null;
+        }
+
+        // Find identifier
+        int index = 0;
+        int countDigit = 0;
+        for (; index < length; index++) {
+
+            // Check byte
+            char c = (char) buf.getByte(index);
+            if (Character.isDigit(c)) {
+                countDigit++;
+            }
+
+            // Check count
+            if (countDigit == 10) {
+                break;
+            }
+        }
+
+        if (countDigit < 10) {
+            return null;
+        }
+
+        // Find begin
+        int beginIndex = 0;
+        for (; index < length; index++) {
+
+            char c = (char) buf.getByte(index);
+            if (c == ',') {
+                beginIndex = index;
+                break;
+            }
+        }
+
+        if (beginIndex == 0) {
+            return null;
+        }
+
+        // Find imei
+        int imeiIndex = 0;
+        for (; index < length; index++) {
+
+            char c = (char) buf.getByte(index);
+            if (c == ':') {
+                imeiIndex = index;
+                break;
+            }
+        }
+
+        if (imeiIndex == 0) {
+            return null;
+        }
+
+        // Find end
+        int endIndex = 0;
+        for (; index < length; index++) {
+
+            char c = (char) buf.getByte(index);
+            if (c == ',') {
+                endIndex = index;
+                break;
+            }
+        }
+
+        if (endIndex == 0) {
+            return null;
+        }
+
+        // Read buffer
+        buf.skipBytes(beginIndex);
+        ChannelBuffer frame = buf.readBytes(endIndex - beginIndex + 1);
+
+        return frame;
+    }
+
+}
diff --git a/src/net/sourceforge/opentracking/protocol/xexun/XexunProtocolDecoder.java b/src/net/sourceforge/opentracking/protocol/xexun/XexunProtocolDecoder.java
new file mode 100644
index 000000000..cfd88fe6e
--- /dev/null
+++ b/src/net/sourceforge/opentracking/protocol/xexun/XexunProtocolDecoder.java
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package net.sourceforge.opentracking.protocol.xexun;
+
+import java.util.List;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+import java.text.ParseException;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.handler.codec.oneone.OneToOneDecoder;
+import org.jboss.netty.channel.ChannelPipelineCoverage;
+import net.sourceforge.opentracking.Position;
+import net.sourceforge.opentracking.Device;
+import net.sourceforge.opentracking.DataManager;
+import java.sql.SQLException;
+
+/**
+ * Xexun tracker protocol decoder
+ */
+@ChannelPipelineCoverage("all")
+public class XexunProtocolDecoder extends OneToOneDecoder {
+
+    /**
+     * Init device table
+     */
+    public XexunProtocolDecoder(DataManager dataManager) throws SQLException {
+
+        // Create map
+        setDevices(new HashMap());
+
+        if (dataManager != null) {
+            List deviceList = dataManager.readDevice();
+
+            for (Object device: deviceList) {
+                getDevices().put(((Device) device).getImei(), device);
+            }
+        }
+    }
+
+    /**
+     * Devices
+     */
+    private Map devices;
+
+    public Map getDevices() {
+        return devices;
+    }
+
+    private void setDevices(Map newDevices) {
+        devices = newDevices;
+    }
+
+    /**
+     * Regular expressions pattern
+     */
+    static private Pattern pattern = Pattern.compile(
+            "," +                               // Old: [\\d]+,
+            "\\+?[\\d]+," +                     // Trusted phone number
+            "GPRMC," +
+            "([\\d]{2})([\\d]{2})([\\d]{2}).([\\d]{3})," + // Time (HHMMSS.SSS)
+            "([AV])," +                         // Validity
+            "([\\d]{2})([\\d]{2}.[\\d]{4})," +  // Latitude (DDMM.MMMM)
+            "([NS])," +
+            "([\\d]{3})([\\d]{2}.[\\d]{4})," +  // Longitude (DDDMM.MMMM)
+            "([EW])," +
+            "([\\d]+.[\\d]{2})," +              // Speed
+            "([\\d]+.[\\d]{2})," +              // Course
+            "([\\d]{2})([\\d]{2})([\\d]{2})," + // Date (DDMMYY)
+            ".*imei:" +
+            "([\\d]+)," +                       // IMEI
+            ".*");
+
+    /**
+     * Decode message
+     */
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws ParseException {
+
+        // Parse message
+        String sentence = (String) msg;
+        System.out.println("parse: " + sentence);
+        Matcher parser = pattern.matcher(sentence);
+        if (!parser.matches()) {
+            throw new ParseException(null, 0);
+        }
+
+        // Create new position
+        Position position = new Position();
+
+        Integer index = 1;
+
+        // Time
+        Calendar time = new GregorianCalendar();
+        time.clear();
+        time.set(Calendar.HOUR, Integer.valueOf(parser.group(index++)));
+        time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++)));
+        time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++)));
+        time.set(Calendar.MILLISECOND, Integer.valueOf(parser.group(index++)));
+
+        // Validity
+        position.setValid(parser.group(index++).compareTo("A") == 0 ? true : false);
+
+        // Latitude
+        Double latitude = Double.valueOf(parser.group(index++));
+        latitude += Double.valueOf(parser.group(index++)) / 60;
+        if (parser.group(index++).compareTo("S") == 0) latitude = -latitude;
+        position.setLatitude(latitude);
+
+        // Longitude
+        Double lonlitude = Double.valueOf(parser.group(index++));
+        lonlitude += Double.valueOf(parser.group(index++)) / 60;
+        if (parser.group(index++).compareTo("W") == 0) lonlitude = -lonlitude;
+        position.setLongitude(lonlitude);
+
+        // Speed and course
+        position.setSpeed(Double.valueOf(parser.group(index++)));
+        position.setCourse(Double.valueOf(parser.group(index++)));
+
+        // Date
+        time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
+        time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
+        time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++)));
+        position.setTime(time.getTime());
+
+        // Get device by IMEI
+        String imei = parser.group(index++);
+        position.setDeviceId(((Device) getDevices().get(imei)).getId());
+
+        return position;
+    }
+
+}