From 82965326887d0867f8edf29e638630c2ee85423c Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 13 Feb 2013 20:41:08 +1300
Subject: Added Syrus protocol (fix #133)

---
 src/org/traccar/protocol/SyrusProtocolDecoder.java | 148 +++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 src/org/traccar/protocol/SyrusProtocolDecoder.java

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

diff --git a/src/org/traccar/protocol/SyrusProtocolDecoder.java b/src/org/traccar/protocol/SyrusProtocolDecoder.java
new file mode 100644
index 000000000..10aec4f26
--- /dev/null
+++ b/src/org/traccar/protocol/SyrusProtocolDecoder.java
@@ -0,0 +1,148 @@
+/*
+ * 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.Date;
+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.Log;
+import org.traccar.model.Position;
+
+public class SyrusProtocolDecoder extends BaseProtocolDecoder {
+
+    public SyrusProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+
+    /**
+     * Regular expressions pattern
+     */
+    //"REV691615354941+3570173+1397742703203212;ID=Test"
+    static private Pattern pattern = Pattern.compile(
+            "REV" +                        // Type
+            "\\d{2}" +                     // Event index
+            "(\\d{4})" +                   // Week
+            "(\\d)" +                      // Day
+            "(\\d{5})" +                   // Seconds
+            "([\\+\\-]\\d{2})(\\d{5})" +      // Latitude
+            "([\\+\\-]\\d{3})(\\d{5})" +      // Longitude
+            "(\\d{3})" +                   // Speed
+            "(\\d{3})" +                   // Course
+            "\\d" +                        // Fix mode
+            "(\\d)" +                      // Fix age
+            ".*");
+
+    private Date getTime(long week, long day, long seconds) {
+        Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+        time.clear();
+        time.set(Calendar.YEAR, 1980);
+        time.set(Calendar.MONTH, 0);
+        time.set(Calendar.DAY_OF_MONTH, 6);
+
+        long millis = time.getTimeInMillis();
+        millis += ((week * 7 + day) * 24 * 60 * 60 + seconds) * 1000;
+
+        return new Date(millis);
+    }
+    
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        String sentence = (String) msg;
+        
+        // Find message start
+        int beginIndex = sentence.indexOf('>');
+        if (beginIndex != -1) {
+            sentence = sentence.substring(beginIndex + 1);
+        }
+
+        // Find device ID
+        Long deviceId = null;
+        beginIndex = sentence.indexOf(";ID=");
+        if (beginIndex != -1) {
+            beginIndex += 4;
+            int endIndex = sentence.indexOf(';', beginIndex);
+            if (endIndex == -1) {
+                endIndex = sentence.length();
+            }
+
+            // Find device in database
+            String id = sentence.substring(beginIndex, endIndex);
+            try {
+                deviceId = getDataManager().getDeviceByImei(id).getId();
+            } catch(Exception error) {
+                Log.warning("Unknown device - " + id);
+                return null;
+            }
+            
+            // Send response
+            if (channel != null) {
+                channel.write(id);
+            }
+        }
+
+        // Parse message
+        Matcher parser = pattern.matcher(sentence);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        // Create new position
+        Position position = new Position();
+        StringBuilder extendedInfo = new StringBuilder("<protocol>syrus</protocol>");
+        position.setDeviceId(deviceId);
+
+        Integer index = 1;
+
+        // Time
+        int week = Integer.valueOf(parser.group(index++));
+        int day = Integer.valueOf(parser.group(index++));
+        int seconds = Integer.valueOf(parser.group(index++));
+        position.setTime(getTime(week, day, seconds));
+
+        // Latitude
+        String latitude = parser.group(index) + '.' + parser.group(index + 1);
+        index += 2;
+        position.setLatitude(Double.valueOf(latitude));
+
+        // Latitude
+        String longitude = parser.group(index) + '.' + parser.group(index + 1);
+        index += 2;
+        position.setLongitude(Double.valueOf(longitude));
+
+        // Altitude
+        position.setAltitude(0.0);
+        
+        // Speed and Course
+        position.setSpeed(Double.valueOf(parser.group(index++)) * 0.868976);
+        position.setCourse(Double.valueOf(parser.group(index++)));
+        
+        // Validity
+        position.setValid(Integer.valueOf(parser.group(index++)) == 2);
+
+        position.setExtendedInfo(extendedInfo.toString());
+        return position;
+    }
+
+}
-- 
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