From f9da745ca13052396c40c4e8f99da7cd4ed14d3c Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Sun, 7 Oct 2012 22:22:40 +1300
Subject: Progress protocol template

---
 .../traccar/protocol/ProgressProtocolDecoder.java  | 93 ++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 src/org/traccar/protocol/ProgressProtocolDecoder.java

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

diff --git a/src/org/traccar/protocol/ProgressProtocolDecoder.java b/src/org/traccar/protocol/ProgressProtocolDecoder.java
new file mode 100644
index 000000000..15cffbbda
--- /dev/null
+++ b/src/org/traccar/protocol/ProgressProtocolDecoder.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2012 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 org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.traccar.GenericProtocolDecoder;
+import org.traccar.model.DataManager;
+import org.traccar.model.Position;
+
+/**
+ * Progress tracker protocol decoder
+ */
+public class ProgressProtocolDecoder extends GenericProtocolDecoder {
+
+    /**
+     * Device ID
+     */
+    private long deviceId;
+
+    /**
+     * Initialize
+     */
+    public ProgressProtocolDecoder(DataManager dataManager, Integer resetDelay) {
+        super(dataManager, resetDelay);
+    }
+
+    /*
+     * Message types
+     */
+    static final int MSG_NULL = 0;
+    static final int MSG_IDENT = 1;
+    static final int MSG_IDENT_FULL = 2;
+    static final int MSG_POINT = 10;
+    static final int MSG_LOG_SYNC = 100;
+    static final int MSG_LOGMSG = 101;
+    static final int MSG_TEXT = 102;
+    static final int MSG_ALARM = 200;
+    static final int MSG_ALARM_RECIEVED = 201;
+
+    /**
+     * Decode message
+     */
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        ChannelBuffer buf = (ChannelBuffer) msg;
+        int type = buf.readUnsignedShort();
+        int length = buf.readUnsignedShort();
+
+        // Authentication
+        if (type == MSG_IDENT || type == MSG_IDENT_FULL) {
+            long id = buf.readUnsignedInt();
+            length = buf.readUnsignedShort();
+            buf.skipBytes(length);
+            length = buf.readUnsignedShort();
+            String imei = buf.readBytes(length).toString(Charset.defaultCharset());
+            deviceId = getDataManager().getDeviceByImei(imei).getId();
+        }
+
+        // Position
+        else if (type == MSG_POINT || type == MSG_ALARM) {
+            Position position = new Position();
+            position.setDeviceId(deviceId);
+            // TODO: parse messages here
+
+            if (type == MSG_ALARM) {
+                // TODO: send MSG_ALARM_RECIEVED / channel.write(...);
+            }
+
+            return position;
+        }
+
+        return null;
+    }
+
+}
-- 
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