From 7dbd8dd192b1d48a8b26168763ecf29d97433319 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 24 Dec 2014 15:33:04 +1300
Subject: Initial Ulbotech implementation

---
 .../traccar/protocol/UlbotechProtocolDecoder.java  | 122 +++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 src/org/traccar/protocol/UlbotechProtocolDecoder.java

(limited to 'src/org/traccar/protocol/UlbotechProtocolDecoder.java')

diff --git a/src/org/traccar/protocol/UlbotechProtocolDecoder.java b/src/org/traccar/protocol/UlbotechProtocolDecoder.java
new file mode 100644
index 000000000..cf152ebc5
--- /dev/null
+++ b/src/org/traccar/protocol/UlbotechProtocolDecoder.java
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2012 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 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.Calendar;
+import java.util.Date;
+import java.util.Properties;
+import java.util.TimeZone;
+
+public class UlbotechProtocolDecoder extends BaseProtocolDecoder {
+
+    public UlbotechProtocolDecoder(DataManager dataManager, String protocol, Properties properties) {
+        super(dataManager, protocol, properties);
+    }
+
+    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 short DATA_GPS = 0x01;
+    private static final short DATA_LBS = 0x02;
+    private static final short DATA_STATUS = 0x03;
+    private static final short DATA_MILAGE = 0x04;
+    private static final short DATA_ADC = 0x05;
+    private static final short DATA_GEOFENCE = 0x06;
+    private static final short DATA_OBD2 = 0x07;
+    private static final short DATA_FUEL = 0x08;
+    private static final short DATA_OBD2_ALARM = 0x09;
+    private static final short DATA_HARSH_DRIVER = 0x0A;
+    private static final short DATA_CANBUS = 0x0B;
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        ChannelBuffer buf = (ChannelBuffer) msg;
+
+        buf.readByte(); // header
+        buf.readUnsignedByte(); // version
+        buf.readUnsignedByte(); // type
+
+        // Create new position
+        Position position = new Position();
+        ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol());
+
+        // Get device id
+        String imei = ChannelBufferTools.readHexString(buf, 16).substring(1);
+        try {
+            position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
+        } catch(Exception error) {
+            Log.warning("Unknown device - " + imei);
+        }
+
+        // Time
+        long seconds = buf.readUnsignedInt() & 0x7fffffffl;
+        seconds += 946684800l; // 2000-01-01 00:00
+        position.setTime(new Date(seconds * 1000));
+
+        while (buf.readableBytes() > 3) {
+
+            short type = buf.readUnsignedByte();
+            short length = buf.readUnsignedByte();
+
+            switch (type) {
+
+                case DATA_GPS:
+
+                    position.setValid(true);
+                    position.setLatitude(buf.readInt() / 1000000.0);
+                    position.setLongitude(buf.readInt() / 1000000.0);
+                    position.setAltitude(0.0);
+                    position.setSpeed(buf.readUnsignedShort() * 0.539957);
+                    position.setCourse((double) buf.readUnsignedShort());
+                    extendedInfo.set("hdop", buf.readUnsignedShort());
+
+                    break;
+
+
+                default:
+                    buf.skipBytes(length);
+                    break;
+            }
+        }
+
+        position.setExtendedInfo(extendedInfo.toString());
+        return position;
+    }
+
+}
-- 
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