From e0c1c52e54ba7bd6f08b0658fe03e84b8034347b Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Sun, 18 Aug 2013 21:47:03 +1200
Subject: Add Noran/UniGuard support (fix #296)

---
 src/org/traccar/protocol/NoranProtocolDecoder.java | 129 +++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 src/org/traccar/protocol/NoranProtocolDecoder.java

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

diff --git a/src/org/traccar/protocol/NoranProtocolDecoder.java b/src/org/traccar/protocol/NoranProtocolDecoder.java
new file mode 100644
index 000000000..cc8c91876
--- /dev/null
+++ b/src/org/traccar/protocol/NoranProtocolDecoder.java
@@ -0,0 +1,129 @@
+/*
+ * 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.nio.charset.Charset;
+import java.util.Calendar;
+import java.util.TimeZone;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+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.ExtendedInfoFormatter;
+import org.traccar.model.Position;
+
+public class NoranProtocolDecoder extends BaseProtocolDecoder {
+
+    public NoranProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+
+    private String readImei(ChannelBuffer buf) {
+        int b = buf.readUnsignedByte();
+        StringBuilder imei = new StringBuilder();
+        imei.append(b & 0x0F);
+        for (int i = 0; i < 7; i++) {
+            b = buf.readUnsignedByte();
+            imei.append((b & 0xF0) >> 4);
+            imei.append(b & 0x0F);
+        }
+        return imei.toString();
+    }
+
+    private static final int MSG_UPLOAD_POSITION = 0x0008;
+    private static final int MSG_CONTROL_RESPONSE = 0x8009;
+    private static final int MSG_ALARM = 0x0003;
+    private static final int MSG_SHAKE_HAND = 0x0000;
+    private static final int MSG_IMAGE_SIZE = 0x0200;
+    private static final int MSG_IMAGE_PACKET = 0x0201;
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+        
+        ChannelBuffer buf = (ChannelBuffer) msg;
+
+        buf.readUnsignedShort(); // length
+        int type = buf.readUnsignedShort();
+        
+        if (type == MSG_SHAKE_HAND) {
+            // TODO send response
+        }
+        
+        else if (type == MSG_UPLOAD_POSITION ||
+                 type == MSG_CONTROL_RESPONSE ||
+                 type == MSG_ALARM) {
+            
+            // Create new position
+            Position position = new Position();
+            ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("noran");
+            
+            if (type == MSG_CONTROL_RESPONSE) {
+                buf.readUnsignedInt(); // GIS ip
+                buf.readUnsignedInt(); // GIS port
+            }
+
+            // Flags
+            int flags = buf.readUnsignedByte();
+            position.setValid((flags & 0x01) != 0);
+
+            // Alarm type
+            extendedInfo.set("alarm", buf.readUnsignedByte());
+
+            // Location
+            position.setSpeed((double) buf.readUnsignedByte());
+            position.setCourse((double) buf.readUnsignedShort());
+            position.setLongitude((double) buf.readFloat());
+            position.setLatitude((double) buf.readFloat());
+
+            // Time
+            long timeValue = buf.readUnsignedInt();
+            Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+            time.clear();
+            time.set(Calendar.YEAR, 2000 + (int) (timeValue >> 26));
+            time.set(Calendar.MONTH, (int) (timeValue >> 22 & 0x0f) - 1);
+            time.set(Calendar.DAY_OF_MONTH, (int) (timeValue >> 17 & 0x1f));
+            time.set(Calendar.HOUR, (int) (timeValue >> 12 & 0x1f));
+            time.set(Calendar.MINUTE, (int) (timeValue >> 6 & 0x3f));
+            time.set(Calendar.SECOND, (int) (timeValue & 0x3f));
+            position.setTime(time.getTime());
+
+            // Identification
+            String id = buf.readBytes(11).toString(Charset.defaultCharset());
+            try {
+                position.setDeviceId(getDataManager().getDeviceByImei(id).getId());
+            } catch(Exception error) {
+                Log.warning("Unknown device - " + id);
+            }
+            
+            // IO status
+            extendedInfo.set("io", buf.readUnsignedByte());
+            
+            // Fuel
+            extendedInfo.set("fuel", buf.readUnsignedByte());
+            
+            position.setExtendedInfo(extendedInfo.toString());
+            return position;
+        }
+
+        return null;
+    }
+
+}
-- 
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