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-rw-r--r--src/org/traccar/protocol/TrackboxProtocolDecoder.java145
1 files changed, 145 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/TrackboxProtocolDecoder.java b/src/org/traccar/protocol/TrackboxProtocolDecoder.java
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+++ b/src/org/traccar/protocol/TrackboxProtocolDecoder.java
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+/*
+ * 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;
+ }
+
+}