Implement Trackbox protocol

1 files changed, 145 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/TrackboxProtocolDecoder.java b/src/org/traccar/protocol/TrackboxProtocolDecoder.java
new file mode 100644
index 000000000..865d81e30
--- /dev/null
+++ b/src/org/traccar/protocol/TrackboxProtocolDecoder.java
@@ -0,0 +1,145 @@
+/*
+ * 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 java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.ServerManager;
+import org.traccar.helper.Log;
+import org.traccar.model.ExtendedInfoFormatter;
+import org.traccar.model.Position;
+
+public class TrackboxProtocolDecoder extends BaseProtocolDecoder {
+    
+    private Long deviceId;
+
+    public TrackboxProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+
+    private static final Pattern pattern = Pattern.compile(
+            "(\\d{2})(\\d{2})(\\d{2})\\.(\\d{3})," + // Time
+            "(\\d{2})(\\d{2}\\.\\d{4})([NS])," + // Latitude (DDMM.MMMM)
+            "(\\d{3})(\\d{2}\\.\\d{4})([EW])," + // Longitude (DDDMM.MMMM)
+            "(\\d+\\.\\d)," +                    // HDOP
+            "(-?\\d+\\.?\\d*)," +                // Altitude
+            "(\\d)," +                           // Fix Type
+            "(\\d+\\.\\d+)," +                   // Course
+            "(\\d+\\.\\d+)," +                   // Speed (kph)
+            "(\\d+\\.\\d+)," +                   // Speed (knots)
+            "(\\d{2})(\\d{2})(\\d{2})," +        // Date
+            "(\\d+)");                           // Satellites
+
+    private void sendResponse(Channel channel) {
+        if (channel != null) {
+            channel.write("=OK=\r\n");
+        }
+    }
+    
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        String sentence = (String) msg;
+
+        if (sentence.startsWith("a=connect")) {
+            String id = sentence.substring(sentence.indexOf("i=") + 2);
+            try {
+                deviceId = getDataManager().getDeviceByImei(id).getId();
+                sendResponse(channel);
+            } catch(Exception error) {
+              Log.warning("Unknown device - " + id);
+            }
+        }
+        
+        else {
+            // Parse message
+            Matcher parser = pattern.matcher(sentence);
+            if (!parser.matches()) {
+                return null;
+            }
+            sendResponse(channel);
+
+            // Create new position
+            Position position = new Position();
+            position.setDeviceId(deviceId);
+            ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("trackbox");
+
+            Integer index = 1;
+
+            // Time
+            Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+            time.clear();
+            time.set(Calendar.HOUR_OF_DAY, Integer.valueOf(parser.group(index++)));
+            time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++)));
+            time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++)));
+            time.set(Calendar.MILLISECOND, Integer.valueOf(parser.group(index++)));
+
+            // Latitude
+            Double latitude = Double.valueOf(parser.group(index++));
+            latitude += Double.valueOf(parser.group(index++)) / 60;
+            if (parser.group(index++).compareTo("S") == 0) latitude = -latitude;
+            position.setLatitude(latitude);
+
+            // Longitude
+            Double longitude = Double.valueOf(parser.group(index++));
+            longitude += Double.valueOf(parser.group(index++)) / 60;
+            if (parser.group(index++).compareTo("W") == 0) longitude = -longitude;
+            position.setLongitude(longitude);
+            
+            // HDOP
+            extendedInfo.set("hdop", parser.group(index++));
+
+            // Altitude
+            position.setAltitude(Double.valueOf(parser.group(index++)));
+            
+            // Validity
+            int fix = Integer.valueOf(parser.group(index++));
+            extendedInfo.set("fix", fix);
+            position.setValid(fix > 0);
+
+            // Course
+            position.setCourse(Double.valueOf(parser.group(index++)));
+
+            // Speed
+            index += 1; // speed in kph
+            position.setSpeed(Double.valueOf(parser.group(index++)));
+
+            // Date
+            time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
+            time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
+            time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++)));
+            position.setTime(time.getTime());
+
+            // Satellites
+            extendedInfo.set("satellites", parser.group(index++));
+
+            // Extended info
+            position.setExtendedInfo(extendedInfo.toString());
+
+            return position;
+        }
+        
+        return null;
+    }
+
+}