1 files changed, 144 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/FlextrackProtocolDecoder.java b/src/main/java/org/traccar/protocol/FlextrackProtocolDecoder.java
new file mode 100644
index 000000000..9dce22ede
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/FlextrackProtocolDecoder.java
@@ -0,0 +1,144 @@
+/*
+ * Copyright 2015 - 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.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.CellTower;
+import org.traccar.model.Network;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.regex.Pattern;
+
+public class FlextrackProtocolDecoder extends BaseProtocolDecoder {
+
+    public FlextrackProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN_LOGON = new PatternBuilder()
+            .number("(-?d+),")                   // index
+            .text("LOGON,")
+            .number("(d+),")                     // node id
+            .number("(d+)")                      // iccid
+            .compile();
+
+    private static final Pattern PATTERN = new PatternBuilder()
+            .number("(-?d+),")                   // index
+            .text("UNITSTAT,")
+            .number("(dddd)(dd)(dd),")           // date (yyyymmdd)
+            .number("(dd)(dd)(dd),")             // time (hhmmss)
+            .number("d+,")                       // node id
+            .number("([NS])(d+).(d+.d+),")       // latitude
+            .number("([EW])(d+).(d+.d+),")       // longitude
+            .number("(d+),")                     // speed
+            .number("(d+),")                     // course
+            .number("(d+),")                     // satellites
+            .number("(d+),")                     // battery
+            .number("(-?d+),")                   // gsm
+            .number("(x+),")                     // state
+            .number("(ddd)")                     // mcc
+            .number("(dd),")                     // mnc
+            .number("(-?d+),")                   // altitude
+            .number("(d+),")                     // hdop
+            .number("(x+),")                     // cell
+            .number("d+,")                       // gps fix time
+            .number("(x+),")                     // lac
+            .number("(d+)")                      // odometer
+            .compile();
+
+    private void sendAcknowledgement(Channel channel, SocketAddress remoteAddress, String index) {
+        if (channel != null) {
+            channel.writeAndFlush(new NetworkMessage(index + ",ACK\r", remoteAddress));
+        }
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        String sentence = (String) msg;
+
+        if (sentence.contains("LOGON")) {
+
+            Parser parser = new Parser(PATTERN_LOGON, sentence);
+            if (!parser.matches()) {
+                return null;
+            }
+
+            sendAcknowledgement(channel, remoteAddress, parser.next());
+
+            String id = parser.next();
+            String iccid = parser.next();
+
+            getDeviceSession(channel, remoteAddress, iccid, id);
+
+        } else if (sentence.contains("UNITSTAT")) {
+
+            DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+            if (deviceSession == null) {
+                return null;
+            }
+
+            Parser parser = new Parser(PATTERN, sentence);
+            if (!parser.matches()) {
+                return null;
+            }
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            sendAcknowledgement(channel, remoteAddress, parser.next());
+
+            position.setTime(parser.nextDateTime());
+
+            position.setValid(true);
+            position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
+            position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
+            position.setSpeed(UnitsConverter.knotsFromKph(parser.nextInt(0)));
+            position.setCourse(parser.nextInt(0));
+
+            position.set(Position.KEY_SATELLITES, parser.nextInt(0));
+            position.set(Position.KEY_BATTERY, parser.nextInt(0));
+            int rssi = parser.nextInt(0);
+            position.set(Position.KEY_STATUS, parser.nextHexInt(0));
+
+            int mcc = parser.nextInt(0);
+            int mnc = parser.nextInt(0);
+
+            position.setAltitude(parser.nextInt(0));
+
+            position.set(Position.KEY_HDOP, parser.nextInt(0) * 0.1);
+
+            position.setNetwork(new Network(CellTower.from(
+                    mcc, mnc, parser.nextHexInt(0), parser.nextHexInt(0), rssi)));
+
+            position.set(Position.KEY_ODOMETER, parser.nextInt(0));
+
+            return position;
+        }
+
+        return null;
+    }
+
+}