From 2cc6f2e4b4610ddc5aafd8b043ff86a86d57cc29 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Mon, 11 Jul 2016 16:47:11 +1200
Subject: Implement Teltonika commands (fix #1948)

---
 src/org/traccar/protocol/TeltonikaProtocol.java    |  5 ++
 .../traccar/protocol/TeltonikaProtocolDecoder.java |  6 +--
 .../traccar/protocol/TeltonikaProtocolEncoder.java | 62 ++++++++++++++++++++++
 3 files changed, 70 insertions(+), 3 deletions(-)
 create mode 100644 src/org/traccar/protocol/TeltonikaProtocolEncoder.java

(limited to 'src')

diff --git a/src/org/traccar/protocol/TeltonikaProtocol.java b/src/org/traccar/protocol/TeltonikaProtocol.java
index f944c3003..5a550d4c0 100644
--- a/src/org/traccar/protocol/TeltonikaProtocol.java
+++ b/src/org/traccar/protocol/TeltonikaProtocol.java
@@ -20,6 +20,7 @@ import org.jboss.netty.bootstrap.ServerBootstrap;
 import org.jboss.netty.channel.ChannelPipeline;
 import org.traccar.BaseProtocol;
 import org.traccar.TrackerServer;
+import org.traccar.model.Command;
 
 import java.util.List;
 
@@ -27,6 +28,8 @@ public class TeltonikaProtocol extends BaseProtocol {
 
     public TeltonikaProtocol() {
         super("teltonika");
+        setSupportedCommands(
+                Command.TYPE_CUSTOM);
     }
 
     @Override
@@ -35,12 +38,14 @@ public class TeltonikaProtocol extends BaseProtocol {
             @Override
             protected void addSpecificHandlers(ChannelPipeline pipeline) {
                 pipeline.addLast("frameDecoder", new TeltonikaFrameDecoder());
+                pipeline.addLast("objectEncoder", new TeltonikaProtocolEncoder());
                 pipeline.addLast("objectDecoder", new TeltonikaProtocolDecoder(TeltonikaProtocol.this));
             }
         });
         serverList.add(new TrackerServer(new ConnectionlessBootstrap(), this.getName()) {
             @Override
             protected void addSpecificHandlers(ChannelPipeline pipeline) {
+                pipeline.addLast("objectEncoder", new TeltonikaProtocolEncoder());
                 pipeline.addLast("objectDecoder", new TeltonikaProtocolDecoder(TeltonikaProtocol.this));
             }
         });
diff --git a/src/org/traccar/protocol/TeltonikaProtocolDecoder.java b/src/org/traccar/protocol/TeltonikaProtocolDecoder.java
index 1706a34a5..eb77cf350 100644
--- a/src/org/traccar/protocol/TeltonikaProtocolDecoder.java
+++ b/src/org/traccar/protocol/TeltonikaProtocolDecoder.java
@@ -52,9 +52,9 @@ public class TeltonikaProtocolDecoder extends BaseProtocolDecoder {
         }
     }
 
-    private static final int CODEC_GH3000 = 0x07;
-    private static final int CODEC_FM4X00 = 0x08;
-    private static final int CODEC_12 = 0x0C;
+    public static final int CODEC_GH3000 = 0x07;
+    public static final int CODEC_FM4X00 = 0x08;
+    public static final int CODEC_12 = 0x0C;
 
     private void decodeSerial(Position position, ChannelBuffer buf) {
 
diff --git a/src/org/traccar/protocol/TeltonikaProtocolEncoder.java b/src/org/traccar/protocol/TeltonikaProtocolEncoder.java
new file mode 100644
index 000000000..d91f7f7bf
--- /dev/null
+++ b/src/org/traccar/protocol/TeltonikaProtocolEncoder.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2016 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 org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.traccar.BaseProtocolEncoder;
+import org.traccar.helper.Checksum;
+import org.traccar.helper.Log;
+import org.traccar.model.Command;
+
+import java.nio.charset.StandardCharsets;
+
+public class TeltonikaProtocolEncoder extends BaseProtocolEncoder {
+
+    private ChannelBuffer encodeContent(String content) {
+
+        ChannelBuffer buf = ChannelBuffers.dynamicBuffer();
+
+        buf.writeInt(0);
+        buf.writeInt(content.length() + 10);
+        buf.writeByte(TeltonikaProtocolDecoder.CODEC_12);
+        buf.writeByte(1); // quantity
+        buf.writeByte(5); // type
+        buf.writeInt(content.length() + 2);
+        buf.writeBytes(content.getBytes(StandardCharsets.US_ASCII));
+        buf.writeByte('\r');
+        buf.writeByte('\n');
+        buf.writeByte(1); // quantity
+        buf.writeInt(Checksum.crc16(Checksum.CRC16_IBM, buf.toByteBuffer(8, buf.writerIndex() - 8)));
+
+        return buf;
+    }
+
+    @Override
+    protected Object encodeCommand(Command command) {
+
+        switch (command.getType()) {
+            case Command.TYPE_CUSTOM:
+                return encodeContent((String) command.getAttributes().get(Command.KEY_DATA));
+            default:
+                Log.warning(new UnsupportedOperationException(command.getType()));
+                break;
+        }
+
+        return null;
+    }
+
+}
-- 
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