1 files changed, 115 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/OrionProtocolDecoder.java b/src/main/java/org/traccar/protocol/OrionProtocolDecoder.java
new file mode 100644
index 000000000..af819989e
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/OrionProtocolDecoder.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2014 - 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 io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
+import org.traccar.Protocol;
+import org.traccar.helper.DateBuilder;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.LinkedList;
+import java.util.List;
+
+public class OrionProtocolDecoder extends BaseProtocolDecoder {
+
+    public OrionProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_USERLOG = 0;
+    public static final int MSG_SYSLOG = 3;
+
+    private static void sendResponse(Channel channel, ByteBuf buf) {
+        if (channel != null) {
+            ByteBuf response = Unpooled.buffer(4);
+            response.writeByte('*');
+            response.writeShort(buf.getUnsignedShort(buf.writerIndex() - 2));
+            response.writeByte(buf.getUnsignedByte(buf.writerIndex() - 3));
+            channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+        }
+    }
+
+    private static double convertCoordinate(int raw) {
+        int degrees = raw / 1000000;
+        double minutes = (raw % 1000000) / 10000.0;
+        return degrees + minutes / 60;
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        buf.skipBytes(2); // header
+        int type = buf.readUnsignedByte() & 0x0f;
+
+        if (type == MSG_USERLOG) {
+
+            int header = buf.readUnsignedByte();
+
+            if ((header & 0x40) != 0) {
+                sendResponse(channel, buf);
+            }
+
+            DeviceSession deviceSession = getDeviceSession(
+                    channel, remoteAddress, String.valueOf(buf.readUnsignedInt()));
+            if (deviceSession == null) {
+                return null;
+            }
+
+            List<Position> positions = new LinkedList<>();
+
+            for (int i = 0; i < (header & 0x0f); i++) {
+
+                Position position = new Position(getProtocolName());
+                position.setDeviceId(deviceSession.getDeviceId());
+
+                position.set(Position.KEY_EVENT, buf.readUnsignedByte());
+                buf.readUnsignedByte(); // length
+                position.set(Position.KEY_FLAGS, buf.readUnsignedShortLE());
+
+                position.setLatitude(convertCoordinate(buf.readIntLE()));
+                position.setLongitude(convertCoordinate(buf.readIntLE()));
+                position.setAltitude(buf.readShortLE() / 10.0);
+                position.setCourse(buf.readUnsignedShortLE());
+                position.setSpeed(buf.readUnsignedShortLE() * 0.0539957);
+
+                DateBuilder dateBuilder = new DateBuilder()
+                        .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
+                        .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
+                position.setTime(dateBuilder.getDate());
+
+                int satellites = buf.readUnsignedByte();
+                position.setValid(satellites >= 3);
+                position.set(Position.KEY_SATELLITES, satellites);
+
+                positions.add(position);
+            }
+
+            return positions;
+        }
+
+        return null;
+    }
+
+}