Add EasyTrack protocol (fix #357)

1 files changed, 145 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/EasyTrackProtocolDecoder.java b/src/org/traccar/protocol/EasyTrackProtocolDecoder.java
new file mode 100644
index 000000000..2ad4520a4
--- /dev/null
+++ b/src/org/traccar/protocol/EasyTrackProtocolDecoder.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright 2013 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 EasyTrackProtocolDecoder extends BaseProtocolDecoder {
+
+    public EasyTrackProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+
+    static private Pattern pattern = Pattern.compile(
+            "\\*..," +                          // Manufacturer
+            "(\\d+)," +                         // IMEI
+            "([^,]{2})," +                      // Command
+            "([AV])," +                         // Validity
+            "(\\p{XDigit}{2})" +                // Year
+            "(\\p{XDigit}{2})" +                // Month
+            "(\\p{XDigit}{2})," +               // Day
+            "(\\p{XDigit}{2})" +                // Hours
+            "(\\p{XDigit}{2})" +                // Minutes
+            "(\\p{XDigit}{2})," +               // Seconds
+            "(\\p{XDigit})" +
+            "(\\p{XDigit}{7})," +               // Latitude
+            "(\\p{XDigit})" +
+            "(\\p{XDigit}{7})," +               // Longitude
+            "(\\p{XDigit}{4})," +               // Speed
+            "(\\p{XDigit}{4})," +               // Course
+            "(\\p{XDigit}{8})," +               // Status
+            "(\\d+)," +                         // Signal
+            "(\\d+)," +                         // Power
+            "(\\p{XDigit}{4})," +               // Oil
+            "(\\p{XDigit}+),?" +                // Milage
+            "(\\d+)?" +                         // Altitude
+            ".*");
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        String sentence = (String) msg;
+
+        // Parse message
+        Matcher parser = pattern.matcher(sentence);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        // Create new position
+        Position position = new Position();
+        ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("easytrack");
+
+        Integer index = 1;
+
+        // Get device by IMEI
+        String imei = parser.group(index++);
+        try {
+            position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
+        } catch(Exception error) {
+            Log.warning("Unknown device - " + imei);
+            return null;
+        }
+
+        // Command
+        extendedInfo.set("command", parser.group(index++));
+
+        // Validity
+        position.setValid(parser.group(index++).compareTo("A") == 0 ? true : false);
+        
+        // Date
+        Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+        time.clear();
+        time.set(Calendar.YEAR, 2000 + Integer.parseInt(parser.group(index++), 16));
+        time.set(Calendar.MONTH, Integer.parseInt(parser.group(index++), 16) - 1);
+        time.set(Calendar.DAY_OF_MONTH, Integer.parseInt(parser.group(index++), 16));
+        time.set(Calendar.HOUR, Integer.parseInt(parser.group(index++), 16));
+        time.set(Calendar.MINUTE, Integer.parseInt(parser.group(index++), 16));
+        time.set(Calendar.SECOND, Integer.parseInt(parser.group(index++), 16));
+        position.setTime(time.getTime());
+
+        // Location
+        int hemisphere = parser.group(index++).equals("8") ? -1 : 1;
+        position.setLatitude(
+                hemisphere * Integer.parseInt(parser.group(index++), 16) / 600000.0);
+
+        hemisphere = parser.group(index++).equals("8") ? -1 : 1;
+        position.setLongitude(
+                hemisphere * Integer.parseInt(parser.group(index++), 16) / 600000.0);
+        
+        position.setSpeed(Integer.parseInt(parser.group(index++), 16) / 600000.0);
+        position.setCourse(Integer.parseInt(parser.group(index++), 16) / 600000.0);
+
+        // Status
+        extendedInfo.set("status", parser.group(index++));
+
+        // Signal
+        extendedInfo.set("signal", parser.group(index++));
+
+        // Power
+        position.setPower(Double.valueOf(parser.group(index++)));
+
+        // Oil
+        extendedInfo.set("oil", Integer.parseInt(parser.group(index++), 16));
+
+        // Milage
+        extendedInfo.set("milage", Integer.parseInt(parser.group(index++), 16));
+        
+        // Altitude
+        String altitude = parser.group(index++);
+        if (altitude != null) {
+            position.setAltitude(Double.valueOf(altitude));
+        } else {
+            position.setAltitude(0.0);
+        }
+
+        position.setExtendedInfo(extendedInfo.toString());
+        return position;
+    }
+
+}