Add XT7 protocol support

1 files changed, 176 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/Xt7ProtocolDecoder.java b/src/org/traccar/protocol/Xt7ProtocolDecoder.java
new file mode 100644
index 000000000..79f793d8a
--- /dev/null
+++ b/src/org/traccar/protocol/Xt7ProtocolDecoder.java
@@ -0,0 +1,176 @@
+/*
+ * 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.nio.charset.Charset;
+import java.util.Calendar;
+import java.util.TimeZone;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import org.jboss.netty.buffer.ChannelBuffer;
+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.Position;
+
+public class Xt7ProtocolDecoder extends BaseProtocolDecoder {
+
+    public Xt7ProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+
+    static private Pattern pattern = Pattern.compile(
+            "\\$GPRMC," +
+            "(\\d{2})(\\d{2})(\\d{2})\\.(\\d+)," + // Time (HHMMSS.SSS)
+            "([AV])," +                         // Validity
+            "(\\d{2})(\\d{2}\\.\\d+)," +        // Latitude (DDMM.MMMM)
+            "([NS])," +
+            "(\\d{3})(\\d{2}\\.\\d+)," +        // Longitude (DDDMM.MMMM)
+            "([EW])," +
+            "(\\d+.\\d+)," +                    // Speed
+            "(\\d+\\.?\\d*)?," +                // Course
+            "(\\d{2})(\\d{2})(\\d{2})" +        // Date (DDMMYY)
+            "[^\\*]+\\*[0-9a-fA-F]{2}," +
+            "(\\d+,\\d+)," +                    // IMSI
+            "([0-9a-fA-F]+,[0-9a-fA-F]+)," +    // Cell
+            "(\\d+)," +                         // Signal quality
+            "(\\d+)," +                         // Battery
+            "([01]{4})," +                      // Flags
+            "([01]{4})," +                      // Sensors
+            "(\\d+)," +                         // Fuel
+            "(.+)?");                           // Alarm
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+        
+        ChannelBuffer buf = (ChannelBuffer) msg;
+        
+        buf.skipBytes(3); // STX
+
+        // Create new position
+        Position position = new Position();
+        StringBuilder extendedInfo = new StringBuilder("<protocol>xt7</protocol>");
+        
+        // Get device by id
+        String id = buf.readBytes(16).toString(Charset.defaultCharset()).trim();
+        try {
+            position.setDeviceId(getDataManager().getDeviceByImei(id).getId());
+        } catch(Exception error) {
+            Log.warning("Unknown device - " + id);
+            return null;
+        }
+        
+        buf.readUnsignedByte(); // command
+        int length = buf.readUnsignedByte();
+        
+        // Parse message
+        String sentence = buf.readBytes(length).toString(Charset.defaultCharset());
+        Matcher parser = pattern.matcher(sentence);
+        if (!parser.matches()) {
+            return null;
+        }
+        
+        Integer index = 1;
+
+        // Time
+        Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+        time.clear();
+        time.set(Calendar.HOUR, 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++)));
+
+        // Validity
+        position.setValid(parser.group(index++).compareTo("A") == 0 ? true : false);
+
+        // 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 lonlitude = Double.valueOf(parser.group(index++));
+        lonlitude += Double.valueOf(parser.group(index++)) / 60;
+        if (parser.group(index++).compareTo("W") == 0) lonlitude = -lonlitude;
+        position.setLongitude(lonlitude);
+
+        // Speed
+        position.setSpeed(Double.valueOf(parser.group(index++)));
+
+        // Course
+        String course = parser.group(index++);
+        if (course != null) {
+            position.setCourse(Double.valueOf(course));
+        } else {
+            position.setCourse(0.0);
+        }
+
+        // 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());
+
+        // IMSI
+        extendedInfo.append("<imsi>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</imsi>");
+
+        // Cell
+        extendedInfo.append("<cell>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</cell>");
+
+        // GSM signal quality
+        extendedInfo.append("<gsm>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</gsm>");
+        
+        // Battery
+        position.setPower(Double.valueOf(parser.group(index++)));
+        
+        // Flags
+        extendedInfo.append("<flags>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</flags>");
+
+        // Sensors
+        extendedInfo.append("<sensors>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</sensors>");
+
+        // Fuel
+        extendedInfo.append("<fuel>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</fuel>");
+
+        // Alarm
+        extendedInfo.append("<alarm>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</alarm>");
+
+        // Extended info
+        position.setExtendedInfo(extendedInfo.toString());
+
+        return position;
+    }
+
+}