Start Orion implementation

1 files changed, 225 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/OrionProtocolDecoder.java b/src/org/traccar/protocol/OrionProtocolDecoder.java
new file mode 100644
index 000000000..f321380eb
--- /dev/null
+++ b/src/org/traccar/protocol/OrionProtocolDecoder.java
@@ -0,0 +1,225 @@
+/*
+ * Copyright 2014 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 java.util.Calendar;
+import java.util.TimeZone;
+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.ServerManager;
+import org.traccar.helper.Crc;
+import org.traccar.helper.Log;
+import org.traccar.model.ExtendedInfoFormatter;
+import org.traccar.model.Position;
+
+public class OrionProtocolDecoder extends BaseProtocolDecoder {
+
+    private Long deviceId;
+    private final TimeZone timeZone = TimeZone.getTimeZone("UTC");
+
+    public OrionProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+
+    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 int MSG_LOGIN = 0x01;
+    private static final int MSG_GPS = 0x10;
+    private static final int MSG_LBS = 0x11;
+    private static final int MSG_GPS_LBS = 0x12;
+    private static final int MSG_STATUS = 0x13;
+    private static final int MSG_SATELLITE = 0x14;
+    private static final int MSG_STRING = 0x15;
+    private static final int MSG_GPS_LBS_STATUS = 0x16;
+    private static final int MSG_LBS_PHONE = 0x17;
+    private static final int MSG_LBS_EXTEND = 0x18;
+    private static final int MSG_LBS_STATUS = 0x19;
+    private static final int MSG_GPS_PHONE = 0x1A;
+    private static final int MSG_GPS_LBS_EXTEND = 0x1E;
+
+    private static void sendResponse(Channel channel, int type, int index) {
+        if (channel != null) {
+            ChannelBuffer response = ChannelBuffers.directBuffer(10);
+            response.writeByte(0x78); response.writeByte(0x78); // header
+            response.writeByte(0x05); // size
+            response.writeByte(type);
+            response.writeShort(index);
+            response.writeShort(Crc.crc16Ccitt(response.toByteBuffer(2, 4)));
+            response.writeByte(0x0D); response.writeByte(0x0A); // ending
+            channel.write(response);
+        }
+    }
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        ChannelBuffer buf = (ChannelBuffer) msg;
+
+        // Check header
+        if (buf.readByte() != 0x78 || buf.readByte() != 0x78) {
+            return null;
+        }
+        
+        int length = buf.readByte(); // size
+        int dataLength = length - 5;
+
+        int type = buf.readUnsignedByte();
+        
+        if (type == MSG_LOGIN) {
+
+            String imei = readImei(buf);
+            buf.readUnsignedShort(); // type
+
+            // Timezone offset
+            if (dataLength > 10) {
+                int extensionBits = buf.readUnsignedShort();
+                int offset = (extensionBits >> 4) * 36000;
+                if ((extensionBits & 0x8) != 0) {
+                    offset = -offset;
+                }
+                timeZone.setRawOffset(offset);
+            }
+            
+            try {
+                deviceId = getDataManager().getDeviceByImei(imei).getId();
+                buf.skipBytes(dataLength - 8);
+                sendResponse(channel, type, buf.readUnsignedShort());
+            } catch(Exception error) {
+                Log.warning("Unknown device - " + imei);
+            }
+            
+        }
+
+        else if (deviceId != null && (
+                 type == MSG_GPS ||
+                 type == MSG_GPS_LBS ||
+                 type == MSG_GPS_LBS_STATUS ||
+                 type == MSG_GPS_PHONE ||
+                 type == MSG_GPS_LBS_EXTEND)) {
+
+            // Create new position
+            Position position = new Position();
+            position.setDeviceId(deviceId);
+            ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("gt06");
+
+            // Date and time
+            Calendar time = Calendar.getInstance(timeZone);
+            time.clear();
+            time.set(Calendar.YEAR, 2000 + buf.readUnsignedByte());
+            time.set(Calendar.MONTH, buf.readUnsignedByte() - 1);
+            time.set(Calendar.DAY_OF_MONTH, buf.readUnsignedByte());
+            time.set(Calendar.HOUR_OF_DAY, buf.readUnsignedByte());
+            time.set(Calendar.MINUTE, buf.readUnsignedByte());
+            time.set(Calendar.SECOND, buf.readUnsignedByte());
+            position.setTime(time.getTime());
+
+            // GPS length and Satellites count
+            int gpsLength = buf.readUnsignedByte();
+            extendedInfo.set("satellites", gpsLength & 0xf);
+            gpsLength >>= 4;
+
+            // Latitude
+            double latitude = buf.readUnsignedInt() / (60.0 * 30000.0);
+
+            // Longitude
+            double longitude = buf.readUnsignedInt() / (60.0 * 30000.0);
+
+            // Speed
+            position.setSpeed(buf.readUnsignedByte() * 0.539957);
+
+            // Course and flags
+            int union = buf.readUnsignedShort();
+            position.setCourse((double) (union & 0x03FF));
+            position.setValid((union & 0x1000) != 0);
+            if ((union & 0x0400) == 0) latitude = -latitude;
+            if ((union & 0x0800) != 0) longitude = -longitude;
+
+            position.setLatitude(latitude);
+            position.setLongitude(longitude);
+            position.setAltitude(0.0);
+            
+            if ((union & 0x4000) != 0) {
+                extendedInfo.set("acc", (union & 0x8000) != 0);
+            }
+
+            buf.skipBytes(gpsLength - 12); // skip reserved
+
+            if (type == MSG_GPS_LBS || type == MSG_GPS_LBS_STATUS) {
+
+                int lbsLength = 0;
+                if (type == MSG_GPS_LBS_STATUS) {
+                    lbsLength = buf.readUnsignedByte();
+                }
+
+                // Cell information
+                extendedInfo.set("mcc", buf.readUnsignedShort());
+                extendedInfo.set("mnc", buf.readUnsignedByte());
+                extendedInfo.set("lac", buf.readUnsignedShort());
+                extendedInfo.set("cell", buf.readUnsignedShort() << 8 + buf.readUnsignedByte());
+                buf.skipBytes(lbsLength - 9);
+
+                // Status
+                if (type == MSG_GPS_LBS_STATUS) {
+                    extendedInfo.set("alarm", true);
+                    
+                    int flags = buf.readUnsignedByte();
+                    extendedInfo.set("acc", (flags & 0x2) != 0);
+                    // TODO parse other flags
+
+                    // Voltage
+                    extendedInfo.set("power", buf.readUnsignedByte());
+
+                    // GSM signal
+                    extendedInfo.set("gsm", buf.readUnsignedByte());
+                }
+            }
+
+            // Index
+            if (buf.readableBytes() > 6) {
+                buf.skipBytes(buf.readableBytes() - 6);
+            }
+            int index = buf.readUnsignedShort();
+            extendedInfo.set("index", index);
+            sendResponse(channel, type, index);
+
+            position.setExtendedInfo(extendedInfo.toString());
+            return position;
+        }
+
+        else {
+            buf.skipBytes(dataLength);
+            sendResponse(channel, type, buf.readUnsignedShort());
+        }
+
+        return null;
+    }
+
+}