Implement GoSafe protocol (fix #1079)

1 files changed, 117 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/GoSafeProtocolDecoder.java b/src/org/traccar/protocol/GoSafeProtocolDecoder.java
new file mode 100644
index 000000000..7d43fd4e7
--- /dev/null
+++ b/src/org/traccar/protocol/GoSafeProtocolDecoder.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2015 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 java.net.SocketAddress;
+import java.util.Calendar;
+import java.util.Properties;
+import java.util.TimeZone;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.database.DataManager;
+import org.traccar.helper.Log;
+import org.traccar.model.ExtendedInfoFormatter;
+import org.traccar.model.Position;
+
+public class GoSafeProtocolDecoder extends BaseProtocolDecoder {
+
+    public GoSafeProtocolDecoder(DataManager dataManager, String protocol, Properties properties) {
+        super(dataManager, protocol, properties);
+    }
+
+    private static final Pattern pattern = Pattern.compile(
+            "\\*[^,]+," +
+            "(\\d+)," +                         // IMEI
+            "(\\d{2})(\\d{2})(\\d{2})" +        // Time
+            "(\\d{2})(\\d{2})(\\d{2})," +       // Date
+            ".*," +
+            "GPS.([AV]);" +                     // Validity
+            "\\d+;" +
+            "([NS])(\\d+\\.\\d+);" +            // Latitude
+            "([EW])(\\d+\\.\\d+);" +            // Longitude
+            ".*");
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, SocketAddress remoteAddress, Object msg)
+            throws Exception {
+
+        String sentence = (String) msg;
+
+        // Parse message
+        Matcher parser = pattern.matcher(sentence);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        // Create new position
+        Position position = new Position();
+        ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol());
+
+        Integer index = 1;
+
+        // Get device by IMEI
+        String imei = parser.group(index++);
+        try {
+            position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
+        } catch(Exception error) {
+            Log.warning("Unknown device - " + imei);
+            return null;
+        }
+        
+        // Date
+        Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+        time.clear();
+        time.set(Calendar.HOUR_OF_DAY, Integer.valueOf(parser.group(index++)));
+        time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++)));
+        time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++)));
+        time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
+        time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
+        time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++)));
+        position.setTime(time.getTime());
+
+        // Validity
+        position.setValid(parser.group(index++).compareTo("A") == 0);
+
+        // Latitude
+        String hemisphere = parser.group(index++);
+        Double latitude = Double.valueOf(parser.group(index++));
+        if (hemisphere.compareTo("S") == 0) latitude = -latitude;
+        position.setLatitude(latitude);
+
+        // Longitude
+        hemisphere = parser.group(index++);
+        Double longitude = Double.valueOf(parser.group(index++));
+        if (hemisphere.compareTo("W") == 0) longitude = -longitude;
+        position.setLongitude(longitude);
+
+        // Other
+        position.setSpeed(0.0);
+        position.setCourse(0.0);
+        position.setAltitude(0.0);
+
+        // Extended info
+        position.setExtendedInfo(extendedInfo.toString());
+
+        return position;
+    }
+
+}