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
new file mode 100644
index 000000000..db8022738
--- /dev/null
+++ 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;
+    }
+
+}