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Diffstat (limited to 'src/main/java/org/traccar/protocol/TrackboxProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/TrackboxProtocolDecoder.java110
1 files changed, 110 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/TrackboxProtocolDecoder.java b/src/main/java/org/traccar/protocol/TrackboxProtocolDecoder.java
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+++ b/src/main/java/org/traccar/protocol/TrackboxProtocolDecoder.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2014 - 2018 Anton Tananaev (anton@traccar.org)
+ *
+ * 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 io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
+import org.traccar.Protocol;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.regex.Pattern;
+
+public class TrackboxProtocolDecoder extends BaseProtocolDecoder {
+
+ public TrackboxProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ private static final Pattern PATTERN = new PatternBuilder()
+ .number("(dd)(dd)(dd).(ddd),") // time (hhmmss.sss)
+ .number("(dd)(dd.dddd)([NS]),") // latitude
+ .number("(ddd)(dd.dddd)([EW]),") // longitude
+ .number("(d+.d),") // hdop
+ .number("(-?d+.?d*),") // altitude
+ .number("(d),") // fix type
+ .number("(d+.d+),") // course
+ .number("d+.d+,") // speed (kph)
+ .number("(d+.d+),") // speed (knots)
+ .number("(dd)(dd)(dd),") // date (ddmmyy)
+ .number("(d+)") // satellites
+ .compile();
+
+ private void sendResponse(Channel channel, SocketAddress remoteAddress) {
+ if (channel != null) {
+ channel.writeAndFlush(new NetworkMessage("=OK=\r\n", remoteAddress));
+ }
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ String sentence = (String) msg;
+
+ if (sentence.startsWith("a=connect")) {
+ String id = sentence.substring(sentence.indexOf("i=") + 2);
+ if (getDeviceSession(channel, remoteAddress, id) != null) {
+ sendResponse(channel, remoteAddress);
+ }
+ return null;
+ }
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ Parser parser = new Parser(PATTERN, sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+ sendResponse(channel, remoteAddress);
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ DateBuilder dateBuilder = new DateBuilder()
+ .setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
+
+ position.setLatitude(parser.nextCoordinate());
+ position.setLongitude(parser.nextCoordinate());
+
+ position.set(Position.KEY_HDOP, parser.nextDouble());
+
+ position.setAltitude(parser.nextDouble(0));
+
+ int fix = parser.nextInt(0);
+ position.set(Position.KEY_GPS, fix);
+ position.setValid(fix > 0);
+
+ position.setCourse(parser.nextDouble(0));
+ position.setSpeed(parser.nextDouble(0));
+
+ dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
+ position.setTime(dateBuilder.getDate());
+
+ position.set(Position.KEY_SATELLITES, parser.nextInt());
+
+ return position;
+ }
+
+}