1 files changed, 119 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/AstraProtocolDecoder.java b/src/org/traccar/protocol/AstraProtocolDecoder.java
new file mode 100644
index 000000000..8cfec95fe
--- /dev/null
+++ b/src/org/traccar/protocol/AstraProtocolDecoder.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2016 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.traccar.BaseProtocolDecoder;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Event;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.Charset;
+import java.util.LinkedList;
+import java.util.List;
+
+public class AstraProtocolDecoder extends BaseProtocolDecoder {
+
+    public AstraProtocolDecoder(AstraProtocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_HEARTBEAT = 0x1A;
+    public static final int MSG_DATA = 0x10;
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ChannelBuffer buf = (ChannelBuffer) msg;
+
+        if (channel != null) {
+            channel.write(ChannelBuffers.wrappedBuffer(new byte[] {0x06}), remoteAddress);
+        }
+
+        buf.readUnsignedByte(); // protocol
+        buf.readUnsignedShort(); // length
+
+        String imei = String.format("%08d", buf.readUnsignedInt()) + String.format("%07d", buf.readUnsignedMedium());
+        if (!identify(imei, channel, remoteAddress)) {
+            return null;
+        }
+
+        List<Position> positions = new LinkedList<>();
+
+        while (buf.readableBytes() > 2) {
+
+            Position position = new Position();
+            position.setProtocol(getProtocolName());
+            position.setDeviceId(getDeviceId());
+
+            buf.readUnsignedByte(); // index
+
+            position.setLatitude(buf.readInt() * 0.000001);
+            position.setLongitude(buf.readInt() * 0.000001);
+
+            DateBuilder dateBuilder = new DateBuilder()
+                    .setDate(1980, 1, 6).addMillis(buf.readUnsignedInt() * 1000L);
+            position.setTime(dateBuilder.getDate());
+
+            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte() * 2));
+            position.setCourse(buf.readUnsignedByte() * 2);
+
+            int reason = buf.readUnsignedMedium();
+            buf.readUnsignedShort(); // status
+
+            position.set(Event.PREFIX_IO + 1, buf.readUnsignedByte());
+            position.set(Event.PREFIX_ADC + 1, buf.readUnsignedByte());
+            position.set(Event.KEY_BATTERY, buf.readUnsignedByte());
+            position.set(Event.KEY_POWER, buf.readUnsignedByte());
+
+            buf.readUnsignedByte(); // max journey speed
+            buf.skipBytes(6); // accelerometer
+            buf.readUnsignedShort(); // journey distance
+            buf.readUnsignedShort(); // journey idle time
+
+            position.setAltitude(buf.readUnsignedByte() * 20);
+
+            int quality = buf.readUnsignedByte();
+            position.set(Event.KEY_SATELLITES, quality & 0xf);
+            position.set(Event.KEY_GSM, quality >> 4);
+
+            buf.readUnsignedByte(); // geofence events
+
+            if (BitUtil.check(reason, 6) || BitUtil.check(reason, 7)) {
+
+                position.set(Event.KEY_RFID, buf.readBytes(7).toString(Charset.defaultCharset()));
+                position.set(Event.KEY_ODOMETER, buf.readUnsignedMedium());
+
+                buf.readUnsignedShort(); // engine time
+
+            }
+
+            // extra data
+
+            positions.add(position);
+
+        }
+
+        return positions;
+    }
+
+}