1 files changed, 149 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/LaipacProtocolDecoder.java b/src/org/traccar/protocol/LaipacProtocolDecoder.java
new file mode 100644
index 000000000..e7503ea64
--- /dev/null
+++ b/src/org/traccar/protocol/LaipacProtocolDecoder.java
@@ -0,0 +1,149 @@
+/*
+ * Copyright 2013 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.util.Calendar;
+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.ServerManager;
+import org.traccar.helper.Crc;
+import org.traccar.helper.Log;
+import org.traccar.model.ExtendedInfoFormatter;
+import org.traccar.model.Position;
+
+public class LaipacProtocolDecoder extends BaseProtocolDecoder {
+
+    public LaipacProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+
+    static private Pattern pattern = Pattern.compile(
+            "\\$AVRMC," +
+            "(\\d+)," +                    // Identifier
+            "(\\d{2})(\\d{2})(\\d{2})," +  // Time (HHMMSS)
+            "([AVavr])," +                 // 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)
+            "(.)," +                       // Type
+            "[^\\*]+\\*" +
+            "(\\p{XDigit}{2})");           // Checksum
+    
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        String sentence = (String) msg;
+
+        // Heartbeat
+        if (sentence.startsWith("$ECHK")) {
+            if (channel != null) {
+                channel.write(sentence + "\r\n");
+            }
+            return null;
+        }
+        
+        // Parse message
+        Matcher parser = pattern.matcher(sentence);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        // Create new position
+        Position position = new Position();
+        ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("laipac");
+        Integer index = 1;
+
+        // Identification
+        String id = parser.group(index++);
+        try {
+            position.setDeviceId(getDataManager().getDeviceByImei(id).getId());
+        } catch(Exception error) {
+            Log.warning("Unknown device - " + id);
+        }
+
+        // Time
+        Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+        time.clear();
+        time.set(Calendar.HOUR, Integer.valueOf(parser.group(index++)));
+        time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++)));
+        time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++)));
+
+        // Validity
+        String status = parser.group(index++);
+        position.setValid(status.compareToIgnoreCase("A") == 0 ? true : false);
+
+        // 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
+        position.setSpeed(Double.valueOf(parser.group(index++)));
+
+        // Course
+        position.setCourse(Double.valueOf(parser.group(index++)));
+
+        // 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);
+
+        // Response
+        String type = parser.group(index++);
+        String checksum = parser.group(index++);
+        String response = null;
+
+        if (type.equals("0") && Character.isLowerCase(status.charAt(0))) {
+            response = "$EAVACK,0," + checksum;
+            response += Crc.nmeaChecksum(response);
+        } else if (type.equals("S") || type.equals("T")) {
+            response = "$AVCFG,00000000,t*21";
+        } else if (type.equals("3")) {
+            response = "$AVCFG,00000000,d*31";
+        } else if (type.equals("X") || type.equals("4")) {
+            response = "$AVCFG,00000000,x*2D";
+        }
+        
+        if (response != null && channel != null) {
+            channel.write(response + "\r\n");
+        }
+
+        position.setExtendedInfo(extendedInfo.toString());
+        return position;
+    }
+
+}