From 3ec3b6958e0cfb2a4e81ae4603908e526dfb1956 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 1 May 2019 23:05:26 -0700
Subject: Implement TechTLT protocol

---
 .../traccar/protocol/TechTltProtocolDecoder.java   | 87 ++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 src/main/java/org/traccar/protocol/TechTltProtocolDecoder.java

(limited to 'src/main/java/org/traccar/protocol/TechTltProtocolDecoder.java')

diff --git a/src/main/java/org/traccar/protocol/TechTltProtocolDecoder.java b/src/main/java/org/traccar/protocol/TechTltProtocolDecoder.java
new file mode 100644
index 000000000..bad289060
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/TechTltProtocolDecoder.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2019 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.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 TechTltProtocolDecoder extends BaseProtocolDecoder {
+
+    public TechTltProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN_POSITION = new PatternBuilder()
+            .number("(d+)")                      // id
+            .text("*POS=Y,")
+            .number("(dd):(dd):(dd),")           // time
+            .number("(dd)/(dd)/(dd),")           // date
+            .number("(dd)(dd.d+)")               // latitude
+            .expression("([NS]),")
+            .number("(ddd)(dd.d+)")              // longitude
+            .expression("([EW]),")
+            .number("(d+.d+),")                  // speed
+            .number("(d+.d+),")                  // course
+            .number("(d+.d+),")                  // altitude
+            .number("(d+),")                     // satellites
+            .number("(d+),")                     // lac
+            .number("(d+)")                      // cid
+            .compile();
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        Parser parser = new Parser(PATTERN_POSITION, (String) msg);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        position.setValid(true);
+        position.setTime(parser.nextDateTime(Parser.DateTimeFormat.HMS_DMY));
+        position.setLatitude(parser.nextCoordinate());
+        position.setLongitude(parser.nextCoordinate());
+        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
+        position.setCourse(parser.nextDouble());
+        position.setAltitude(parser.nextDouble());
+
+        position.set(Position.KEY_SATELLITES, parser.nextInt());
+
+        position.setNetwork(new Network(CellTower.fromLacCid(parser.nextInt(), parser.nextInt())));
+
+        return position;
+    }
+
+}
-- 
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