Implemented AutoFon 4.5 protocol (also works for StarLine M10/M11/M16/M17 devices)

3 files changed, 207 insertions, 0 deletions

diff --git a/src/org/traccar/ServerManager.java b/src/org/traccar/ServerManager.java
index d7bfb511b..6b46079e9 100644
--- a/src/org/traccar/ServerManager.java
+++ b/src/org/traccar/ServerManager.java
@@ -179,6 +179,7 @@ public class ServerManager {
         initXt013Server("xt013");
         initAutoFonServer("autofon");
         initGoSafeServer("gosafe");
+        initAutoFon45Server("autofon45");
 
         initProtocolDetector();
 
@@ -1310,4 +1311,15 @@ public class ServerManager {
         }
     }
 
+    private void initAutoFon45Server(final String protocol) throws SQLException {
+        if (isProtocolEnabled(properties, protocol)) {
+            serverList.add(new TrackerServer(this, new ServerBootstrap(), protocol) {
+                @Override
+                protected void addSpecificHandlers(ChannelPipeline pipeline) {
+                    pipeline.addLast("frameDecoder", new AutoFon45FrameDecoder());
+                    pipeline.addLast("objectDecoder", new AutoFon45ProtocolDecoder(dataManager, protocol, properties));
+                }
+            });
+        }
+    }
 }
diff --git a/src/org/traccar/protocol/AutoFon45FrameDecoder.java b/src/org/traccar/protocol/AutoFon45FrameDecoder.java
new file mode 100644
index 000000000..e388273cf
--- /dev/null
+++ b/src/org/traccar/protocol/AutoFon45FrameDecoder.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2015 Vitaly Litvak (vitavaque@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 org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.handler.codec.frame.FrameDecoder;
+
+public class AutoFon45FrameDecoder extends FrameDecoder {
+
+    static final int MSG_LOGIN = 0x41;
+    static final int MSG_LOCATION = 0x02;
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx,
+            Channel channel,
+            ChannelBuffer buf) throws Exception {
+        
+        // Check minimum length
+        if (buf.readableBytes() < 12) {
+            return null;
+        }
+
+        int length = 0;
+        switch (buf.getUnsignedByte(buf.readerIndex())) {
+            case MSG_LOGIN:
+                length = 19;
+                break;
+            case MSG_LOCATION:
+                length = 34;
+                break;
+        }
+        
+        // Check length and return buffer
+        if (length != 0 && buf.readableBytes() >= length) {
+            return buf.readBytes(length);
+        }
+
+        return null;
+    }
+
+}
diff --git a/src/org/traccar/protocol/AutoFon45ProtocolDecoder.java b/src/org/traccar/protocol/AutoFon45ProtocolDecoder.java
new file mode 100644
index 000000000..df98fa93b
--- /dev/null
+++ b/src/org/traccar/protocol/AutoFon45ProtocolDecoder.java
@@ -0,0 +1,138 @@
+/*
+ * Copyright 2015 Vitaly Litvak (vitavaque@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 static org.traccar.protocol.AutoFon45FrameDecoder.MSG_LOGIN;
+import static org.traccar.protocol.AutoFon45FrameDecoder.MSG_LOCATION;
+
+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.database.DataManager;
+import org.traccar.helper.ChannelBufferTools;
+import org.traccar.helper.Log;
+import org.traccar.model.ExtendedInfoFormatter;
+import org.traccar.model.Position;
+
+import java.util.*;
+
+public class AutoFon45ProtocolDecoder extends BaseProtocolDecoder {
+    private long deviceId;
+
+    private static double convertCoordinate(short degrees, int raw) {
+        double seconds = (raw >> 4 & 0xffffff) / 600000.0;
+        return (degrees + seconds) * ((raw & 0x0f) == 0 ? -1 : 1);
+    }
+
+    public AutoFon45ProtocolDecoder(DataManager dataManager, String protocol, Properties properties) {
+        super(dataManager, protocol, properties);
+    }
+
+    @Override
+    protected Object decode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
+        ChannelBuffer buf = (ChannelBuffer) msg;
+
+        int type = buf.getUnsignedByte(0);
+
+        if (type == MSG_LOGIN) {
+            byte[] bytes = new byte[19];
+            buf.readBytes(bytes);
+
+            String imei = ChannelBufferTools.readHexString(ChannelBuffers.wrappedBuffer(bytes, 1, 16), 16).substring(1);
+            try {
+                deviceId = getDataManager().getDeviceByImei(imei).getId();
+            } catch(Exception error) {
+                Log.warning("Unknown device - " + imei);
+                return null;
+            }
+
+            // Send response (CRC)
+            if (channel != null) {
+                byte[] response = "resp_crc=".getBytes("US-ASCII");
+                response = Arrays.copyOf(response, response.length + 1);
+                response[response.length - 1] = crc(bytes, 0, 18);
+                channel.write(ChannelBuffers.wrappedBuffer(response));
+            }
+        } else if (type == MSG_LOCATION) {
+            buf.readUnsignedByte();
+
+            // Create new position
+            Position position = new Position();
+            ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol());
+            position.setDeviceId(deviceId);
+
+            short status = buf.readUnsignedByte();
+            extendedInfo.set("alarm", (status & 0x80) != 0);
+            extendedInfo.set("battery", status & 0x7F);
+
+            buf.skipBytes(2); // remaining time
+
+            extendedInfo.set("temperature", buf.readByte());
+
+            buf.skipBytes(2); // timer (interval and units)
+            buf.readByte(); // mode
+            buf.readByte(); // gprs sending interval
+
+            buf.skipBytes(6); // MCC, MNC, LAC, CID
+
+            // GPS status
+            int valid = buf.readUnsignedByte();
+            position.setValid((valid & 0xc0) != 0);
+            extendedInfo.set("satellites", valid & 0x3f);
+
+            // Date and time
+            int timeOfDay = buf.readUnsignedByte() << 16 | buf.readUnsignedByte() << 8 | buf.readUnsignedByte();
+            int date = buf.readUnsignedByte() << 16 | buf.readUnsignedByte() << 8 | buf.readUnsignedByte();
+
+            Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+            time.clear();
+            time.set(Calendar.HOUR_OF_DAY, timeOfDay / 10000);
+            time.set(Calendar.MINUTE, (timeOfDay - time.get(Calendar.HOUR_OF_DAY) * 10000) / 100);
+            time.set(Calendar.SECOND, (timeOfDay - time.get(Calendar.HOUR_OF_DAY) * 10000 - time.get(Calendar.MINUTE) * 100));
+            time.set(Calendar.DAY_OF_MONTH, date / 10000);
+            time.set(Calendar.MONTH, (date - time.get(Calendar.DAY_OF_MONTH) * 10000) / 100 - 1);
+            time.set(Calendar.YEAR, 2000 + (date - time.get(Calendar.DAY_OF_MONTH) * 10000 - (time.get(Calendar.MONTH) + 1) * 100));
+            position.setTime(time.getTime());
+
+            // Location
+            position.setLatitude(convertCoordinate(buf.readUnsignedByte(), buf.readUnsignedByte() << 16 | buf.readUnsignedByte() << 8 | buf.readUnsignedByte()));
+            position.setLongitude(convertCoordinate(buf.readUnsignedByte(), buf.readUnsignedByte() << 16 | buf.readUnsignedByte() << 8 | buf.readUnsignedByte()));
+            position.setSpeed((double) buf.readUnsignedByte());
+            position.setCourse((double) (buf.readUnsignedByte() << 8 | buf.readUnsignedByte()));
+            position.setAltitude(0.0);
+
+            buf.readUnsignedByte(); // checksum
+
+            position.setExtendedInfo(extendedInfo.toString());
+            return position;
+        }
+
+        return null;
+    }
+
+    private byte crc(byte[] bytes, int offset, int len) {
+        byte GPRS_CRC = 0x3B;
+        for (int i = offset; i < offset + len; i++) {
+            GPRS_CRC += 0x56 ^ bytes[i];
+            GPRS_CRC++;
+            GPRS_CRC ^= 0xC5 + bytes[i];
+            GPRS_CRC--;
+        }
+        return GPRS_CRC;
+    }
+}