From 19b17695867e00861c719292aad7ae48f33a8eeb Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 21 Sep 2016 19:31:39 +1200
Subject: Implement cGuard communication protocol

---
 .../traccar/protocol/CguardProtocolDecoder.java    | 91 ++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 src/org/traccar/protocol/CguardProtocolDecoder.java

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

diff --git a/src/org/traccar/protocol/CguardProtocolDecoder.java b/src/org/traccar/protocol/CguardProtocolDecoder.java
new file mode 100644
index 000000000..1646363e5
--- /dev/null
+++ b/src/org/traccar/protocol/CguardProtocolDecoder.java
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2016 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 org.jboss.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.regex.Pattern;
+
+public class CguardProtocolDecoder extends BaseProtocolDecoder {
+
+    public CguardProtocolDecoder(CguardProtocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN = new PatternBuilder()
+            .text("NV:")
+            .number("(dd)(dd)(dd) ")             // date
+            .number("(dd)(dd)(dd):")             // time
+            .number("(-?d+.d+):")                // longitude
+            .number("(-?d+.d+):")                // latitude
+            .number("(d+.?d*):")                 // speed
+            .number("(?:NAN|(d+.?d*)):")         // accuracy
+            .number("(?:NAN|(d+.?d*)):")         // course
+            .number("(?:NAN|(d+.?d*))")          // altitude
+            .compile();
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        String sentence = (String) msg;
+
+        if (sentence.startsWith("ID:") || sentence.startsWith("IDRO:")) {
+            getDeviceSession(channel, remoteAddress, sentence.substring(sentence.indexOf(':') + 1));
+            return null;
+        }
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Parser parser = new Parser(PATTERN, (String) msg);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        Position position = new Position();
+        position.setProtocol(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        DateBuilder dateBuilder = new DateBuilder()
+                .setDate(parser.nextInt(), parser.nextInt(), parser.nextInt())
+                .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
+        position.setTime(dateBuilder.getDate());
+
+        position.setValid(true);
+        position.setLatitude(parser.nextDouble());
+        position.setLongitude(parser.nextDouble());
+        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
+
+        position.set(Position.KEY_ACCURACY, parser.nextDouble());
+
+        position.setCourse(parser.nextDouble());
+        position.setAltitude(parser.nextDouble());
+
+        return position;
+    }
+
+}
-- 
cgit v1.2.3