Initial EGTS protocol implementation

1 files changed, 149 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/EgtsProtocolDecoder.java b/src/org/traccar/protocol/EgtsProtocolDecoder.java
new file mode 100644
index 000000000..f32f564ed
--- /dev/null
+++ b/src/org/traccar/protocol/EgtsProtocolDecoder.java
@@ -0,0 +1,149 @@
+/*
+ * Copyright 2018 Anton Tananaev (anton@traccar.org)
+ *
+ * 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.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.helper.BitUtil;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class EgtsProtocolDecoder extends BaseProtocolDecoder {
+
+    public EgtsProtocolDecoder(EgtsProtocol protocol) {
+        super(protocol);
+    }
+
+    public static final int SERVICE_AUTH = 1;
+    public static final int SERVICE_TELEDATA = 2;
+    public static final int SERVICE_COMMANDS = 4;
+    public static final int SERVICE_FIRMWARE = 9;
+    public static final int SERVICE_ECALL = 10;
+
+    public static final int MSG_RECORD_RESPONSE = 0;
+    public static final int MSG_TERM_IDENTITY = 1;
+    public static final int MSG_MODULE_DATA = 2;
+    public static final int MSG_VEHICLE_DATA = 3;
+    public static final int MSG_AUTH_PARAMS = 4;
+    public static final int MSG_AUTH_INFO = 5;
+    public static final int MSG_SERVICE_INFO = 6;
+    public static final int MSG_RESULT_CODE = 7;
+    public static final int MSG_POS_DATA = 16;
+    public static final int MSG_EXT_POS_DATA = 17;
+    public static final int MSG_AD_SENSORS_DATA = 18;
+    public static final int MSG_COUNTERS_DATA = 19;
+    public static final int MSG_STATE_DATA = 20;
+    public static final int MSG_LOOPIN_DATA = 22;
+    public static final int MSG_ABS_DIG_SENS_DATA = 23;
+    public static final int MSG_ABS_AN_SENS_DATA = 24;
+    public static final int MSG_ABS_CNTR_DATA = 25;
+    public static final int MSG_ABS_LOOPIN_DATA = 26;
+    public static final int MSG_LIQUID_LEVEL_SENSOR = 27;
+    public static final int MSG_PASSENGERS_COUNTERS  = 28;
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ChannelBuffer buf = (ChannelBuffer) msg;
+
+        buf.skipBytes(buf.getUnsignedByte(buf.readerIndex() + 3));
+
+        DeviceSession deviceSession = null;
+        List<Position> positions = new LinkedList<>();
+
+        while (buf.readableBytes() > 2) {
+
+            int length = buf.readUnsignedShort();
+
+            buf.readUnsignedShort(); // index
+
+            int flags = buf.readUnsignedByte();
+
+            if (BitUtil.check(flags, 0)) {
+                String deviceId = String.valueOf(buf.readUnsignedInt());
+                if (deviceSession == null) {
+                    deviceSession = getDeviceSession(channel, remoteAddress, deviceId);
+                }
+            }
+
+            if (deviceSession == null) {
+                deviceSession = getDeviceSession(channel, remoteAddress);
+            }
+
+            if (BitUtil.check(flags, 1)) {
+                buf.readUnsignedInt(); // event id
+            }
+            if (BitUtil.check(flags, 2)) {
+                buf.readUnsignedInt(); // time
+            }
+
+            buf.readUnsignedByte(); // source service type
+            buf.readUnsignedByte(); // recipient service type
+
+            int recordEnd = buf.readerIndex() + length;
+
+            while (buf.readerIndex() < recordEnd) {
+                int type = buf.readUnsignedByte();
+                int end = buf.readUnsignedShort() + buf.readerIndex();
+
+                if (type == MSG_POS_DATA) {
+                    Position position = new Position(getProtocolName());
+                    position.setDeviceId(deviceSession.getDeviceId());
+
+                    position.setTime(new Date((buf.readUnsignedInt() + 1262304000) * 1000)); // since 2010-01-01
+                    position.setLatitude(buf.readUnsignedInt() * 90.0 / 0xFFFFFFFFL);
+                    position.setLongitude(buf.readUnsignedInt() * 180.0 / 0xFFFFFFFFL);
+
+                    int positionFlags = buf.readUnsignedByte();
+                    position.setValid(BitUtil.check(positionFlags, 0));
+                    if (BitUtil.check(positionFlags, 5)) {
+                        position.setLatitude(-position.getLatitude());
+                    }
+                    if (BitUtil.check(positionFlags, 6)) {
+                        position.setLongitude(-position.getLongitude());
+                    }
+
+                    int speed = buf.readUnsignedShort();
+                    position.setSpeed(BitUtil.to(speed, 14));
+                    position.setCourse(buf.readUnsignedByte() + (BitUtil.check(speed, 15) ? 0x100 : 0));
+
+                    position.set(Position.KEY_ODOMETER, buf.readUnsignedMedium() * 100);
+                    position.set(Position.KEY_INPUT, buf.readUnsignedByte());
+                    position.set(Position.KEY_EVENT, buf.readUnsignedByte());
+
+                    if (BitUtil.check(positionFlags, 7)) {
+                        position.setAltitude(buf.readMedium());
+                    }
+
+                    positions.add(position);
+                }
+
+                buf.readerIndex(end);
+            }
+
+        }
+
+        return positions.isEmpty() ? null : positions;
+    }
+
+}