Implement Riti protocol

1 files changed, 146 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/RitiProtocolDecoder.java b/src/org/traccar/protocol/RitiProtocolDecoder.java
new file mode 100644
index 000000000..aad68a37d
--- /dev/null
+++ b/src/org/traccar/protocol/RitiProtocolDecoder.java
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2014 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.nio.charset.Charset;
+import java.util.Calendar;
+import java.util.TimeZone;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.ServerManager;
+import org.traccar.helper.ChannelBufferTools;
+import org.traccar.helper.Log;
+import org.traccar.model.ExtendedInfoFormatter;
+import org.traccar.model.Position;
+
+public class RitiProtocolDecoder extends BaseProtocolDecoder {
+
+    public RitiProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+
+    private static final Pattern pattern = Pattern.compile(
+            "\\$GPRMC," +
+            "(\\d{2})(\\d{2})(\\d{2})\\.?\\d*," + // Time (HHMMSS.SSS)
+            "([AV])," +                    // Validity
+            "(\\d{2})(\\d{2}\\.\\d+)," +   // Latitude (DDMM.MMMM)
+            "([NS])," +
+            "(\\d{3})(\\d{2}\\.\\d+)," +   // Longitude (DDDMM.MMMM)
+            "([EW])," +
+            "(\\d+\\.?\\d*)?," +           // Speed
+            "(\\d+\\.?\\d*)?," +           // Course
+            "(\\d{2})(\\d{2})(\\d{2})" +   // Date (DDMMYY)
+            ".+");
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        ChannelBuffer buf = (ChannelBuffer) msg;
+
+        // Create new position
+        Position position = new Position();
+        ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("riti");
+
+        buf.skipBytes(2); // header
+
+        // Get device id
+        String id = String.valueOf(buf.readUnsignedShort());
+        try {
+            position.setDeviceId(getDataManager().getDeviceByImei(id).getId());
+        } catch(Exception error) {
+            Log.warning("Unknown device - " + id);
+        }
+        
+        extendedInfo.set("mode", buf.readUnsignedByte());
+        extendedInfo.set("command", buf.readUnsignedByte());
+        extendedInfo.set("power", buf.readUnsignedShort());
+        
+        buf.skipBytes(5);
+        buf.readUnsignedShort();
+        buf.readUnsignedShort();
+        
+        extendedInfo.set("distance", buf.readUnsignedInt());
+        extendedInfo.set("milage", buf.readUnsignedInt());
+        
+        // Parse GPRMC
+        Integer end = ChannelBufferTools.find(buf, buf.readerIndex(), buf.readerIndex() + 80, "*");
+        String gprmc = buf.toString(
+                buf.readerIndex(), end - buf.readerIndex(), Charset.defaultCharset());
+        Matcher parser = pattern.matcher(gprmc);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        Integer index = 1;
+
+        // Time
+        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++)));
+
+        // Validity
+        position.setValid(parser.group(index++).compareTo("A") == 0);
+
+        // Latitude
+        Double latitude = Double.valueOf(parser.group(index++));
+        latitude += Double.valueOf(parser.group(index++)) / 60;
+        if (parser.group(index++).compareTo("S") == 0) latitude = -latitude;
+        position.setLatitude(latitude);
+
+        // Longitude
+        Double longitude = Double.valueOf(parser.group(index++));
+        longitude += Double.valueOf(parser.group(index++)) / 60;
+        if (parser.group(index++).compareTo("W") == 0) longitude = -longitude;
+        position.setLongitude(longitude);
+
+        // Speed
+        String speed = parser.group(index++);
+        if (speed != null) {
+            position.setSpeed(Double.valueOf(speed));
+        } else {
+            position.setSpeed(0.0);
+        }
+
+        // Course
+        String course = parser.group(index++);
+        if (course != null) {
+            position.setCourse(Double.valueOf(course));
+        } else {
+            position.setCourse(0.0);
+        }
+
+        // Date
+        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());
+
+        // Altitude
+        position.setAltitude(0.0);
+
+        position.setExtendedInfo(extendedInfo.toString());
+        return position;
+    }
+
+}