Add Galileo protocol

1 files changed, 169 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/GalileoProtocolDecoder.java b/src/org/traccar/protocol/GalileoProtocolDecoder.java
new file mode 100644
index 000000000..e4b80777e
--- /dev/null
+++ b/src/org/traccar/protocol/GalileoProtocolDecoder.java
@@ -0,0 +1,169 @@
+/*
+ * Copyright 2013 Anton Tananaev (anton.tananaev@gmail.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 org.traccar.protocol;
+
+import java.nio.ByteOrder;
+import java.nio.charset.Charset;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.TimeZone;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.ServerManager;
+import org.traccar.helper.Log;
+import org.traccar.model.Position;
+
+public class GalileoProtocolDecoder extends BaseProtocolDecoder {
+
+    public GalileoProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+    
+    private static final Map<Integer, Integer> tagLengthMap = new HashMap<Integer, Integer>();
+    
+    static {
+        int[] l1 = {0x01,0x02,0x35,0x43,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd5};
+        int[] l2 = {0x04,0x10,0x34,0x40,0x41,0x42,0x45,0x46,0x50,0x51,0x52,0x53,0x58,0x59,0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0xd6,0xd7,0xd8,0xd9,0xda};
+        int[] l4 = {0x20,0x33,0x44,0x90,0xc0,0xc1,0xc2,0xc3,0xd3,0xd4,0xdb,0xdc,0xdd,0xde,0xdf};
+        for (int i : l1) { tagLengthMap.put(i, 1); }
+        for (int i : l2) { tagLengthMap.put(i, 2); }
+        for (int i : l4) { tagLengthMap.put(i, 4); }
+    }
+
+    private static int getTagLength(int tag) {
+        return tagLengthMap.get(tag);
+    }
+
+    private String readImei(ChannelBuffer buf) {
+        int b = buf.readUnsignedByte();
+        StringBuilder imei = new StringBuilder();
+        imei.append(b & 0x0F);
+        for (int i = 0; i < 7; i++) {
+            b = buf.readUnsignedByte();
+            imei.append((b & 0xF0) >> 4);
+            imei.append(b & 0x0F);
+        }
+        return imei.toString();
+    }
+
+    private static final int TAG_IMEI = 0x03;
+    private static final int TAG_DATE = 0x20;
+    private static final int TAG_COORDINATES = 0x30;
+    private static final int TAG_SPEED_COURSE = 0x33;
+    private static final int TAG_ALTITUDE = 0x34;
+    private static final int TAG_STATUS = 0x40;
+    private static final int TAG_POWER = 0x41;
+    private static final int TAG_BATTERY = 0x42;
+    private static final int TAG_MILAGE = 0xd4;
+
+    
+    private void sendReply(Channel channel, int checksum) {
+        ChannelBuffer reply = ChannelBuffers.directBuffer(ByteOrder.LITTLE_ENDIAN, 3);
+        reply.writeByte(0x02);
+        reply.writeShort((short) checksum);
+        if (channel != null) {
+            channel.write(reply);
+        }
+    }
+    
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        ChannelBuffer buf = (ChannelBuffer) msg;
+        
+        buf.readUnsignedByte(); // header
+        int length = buf.readUnsignedShort() & 0x7fff + 3;
+        
+        // Create new position
+        Position position = new Position();
+        StringBuilder extendedInfo = new StringBuilder("<protocol>galileo</protocol>");
+        
+        while (buf.readerIndex() < length) {
+            int tag = buf.readUnsignedByte();
+            switch (tag) {
+
+                case TAG_IMEI:
+                    String imei = buf.toString(buf.readerIndex(), 15, Charset.defaultCharset());
+                    buf.skipBytes(imei.length());
+                    try {
+                        position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
+                    } catch(Exception error) {
+                        Log.warning("Unknown device - " + imei);
+                    }
+                    break;
+
+                case TAG_DATE:
+                    position.setTime(new Date(buf.readUnsignedInt() * 1000));
+                    break;
+                    
+                case TAG_COORDINATES:
+                    position.setValid((buf.readUnsignedByte() & 0xf0) == 0x00);
+                    position.setLatitude(buf.readInt() / 1000000.0);
+                    position.setLongitude(buf.readInt() / 1000000.0);
+                    break;
+                    
+                case TAG_SPEED_COURSE:
+                    position.setSpeed(buf.readUnsignedShort() * 0.0539957);
+                    position.setCourse(buf.readUnsignedShort() * 0.1);
+                    break;
+                    
+                case TAG_ALTITUDE:
+                    position.setAltitude((double) buf.readShort());
+                    break;
+                    
+                case TAG_STATUS:
+                    extendedInfo.append("<status>");
+                    extendedInfo.append(buf.readUnsignedShort());
+                    extendedInfo.append("</status>");
+                    break;
+                    
+                case TAG_POWER:
+                    position.setPower((double) buf.readUnsignedShort());
+                    break;
+                    
+                case TAG_BATTERY:
+                    extendedInfo.append("<battery>");
+                    extendedInfo.append(buf.readUnsignedShort());
+                    extendedInfo.append("</battery>");
+                    break;
+                    
+                case TAG_MILAGE:
+                    extendedInfo.append("<milage>");
+                    extendedInfo.append(buf.readUnsignedInt());
+                    extendedInfo.append("</milage>");
+                    break;
+                    
+                default:
+                    buf.skipBytes(getTagLength(tag));
+                    break;
+                    
+            }
+        }
+        
+        sendReply(channel, buf.readUnsignedShort());
+        
+        position.setExtendedInfo(extendedInfo.toString());
+        return position;
+    }
+
+}