From 5cbf84b30f9b55f7c199289782b28ac71e0b8776 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Fri, 2 Sep 2016 02:48:59 +1200
Subject: Implement custom command for Ruptela

---
 src/org/traccar/protocol/RuptelaProtocol.java      |  6 ++-
 .../traccar/protocol/RuptelaProtocolDecoder.java   |  5 +-
 .../traccar/protocol/RuptelaProtocolEncoder.java   | 55 ++++++++++++++++++++++
 3 files changed, 63 insertions(+), 3 deletions(-)
 create mode 100644 src/org/traccar/protocol/RuptelaProtocolEncoder.java

(limited to 'src/org/traccar/protocol')

diff --git a/src/org/traccar/protocol/RuptelaProtocol.java b/src/org/traccar/protocol/RuptelaProtocol.java
index d9ce4430b..d806c4c01 100644
--- a/src/org/traccar/protocol/RuptelaProtocol.java
+++ b/src/org/traccar/protocol/RuptelaProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2015 - 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.
@@ -20,6 +20,7 @@ import org.jboss.netty.channel.ChannelPipeline;
 import org.jboss.netty.handler.codec.frame.LengthFieldBasedFrameDecoder;
 import org.traccar.BaseProtocol;
 import org.traccar.TrackerServer;
+import org.traccar.model.Command;
 
 import java.util.List;
 
@@ -27,6 +28,8 @@ public class RuptelaProtocol extends BaseProtocol {
 
     public RuptelaProtocol() {
         super("ruptela");
+        setSupportedCommands(
+                Command.TYPE_CUSTOM);
     }
 
     @Override
@@ -35,6 +38,7 @@ public class RuptelaProtocol extends BaseProtocol {
             @Override
             protected void addSpecificHandlers(ChannelPipeline pipeline) {
                 pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(1024, 0, 2, 2, 0));
+                pipeline.addLast("objectEncoder", new RuptelaProtocolEncoder());
                 pipeline.addLast("objectDecoder", new RuptelaProtocolDecoder(RuptelaProtocol.this));
             }
         });
diff --git a/src/org/traccar/protocol/RuptelaProtocolDecoder.java b/src/org/traccar/protocol/RuptelaProtocolDecoder.java
index a9cea8c64..224c027f3 100644
--- a/src/org/traccar/protocol/RuptelaProtocolDecoder.java
+++ b/src/org/traccar/protocol/RuptelaProtocolDecoder.java
@@ -34,7 +34,8 @@ public class RuptelaProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
-    private static final int COMMAND_RECORDS = 0x01;
+    public static final int MSG_RECORDS = 1;
+    public static final int MSG_SMS_VIA_GPRS = 108;
 
     @Override
     protected Object decode(
@@ -52,7 +53,7 @@ public class RuptelaProtocolDecoder extends BaseProtocolDecoder {
 
         int type = buf.readUnsignedByte();
 
-        if (type == COMMAND_RECORDS) {
+        if (type == MSG_RECORDS) {
             List<Position> positions = new LinkedList<>();
 
             buf.readUnsignedByte(); // records left
diff --git a/src/org/traccar/protocol/RuptelaProtocolEncoder.java b/src/org/traccar/protocol/RuptelaProtocolEncoder.java
new file mode 100644
index 000000000..c036870d9
--- /dev/null
+++ b/src/org/traccar/protocol/RuptelaProtocolEncoder.java
@@ -0,0 +1,55 @@
+/*
+ * 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 RuptelaProtocolEncoder extends BaseProtocolEncoder {
+
+    private ChannelBuffer encodeContent(String content) {
+
+        ChannelBuffer buf = ChannelBuffers.dynamicBuffer();
+
+        buf.writeShort(1 + content.length());
+        buf.writeByte(RuptelaProtocolDecoder.MSG_SMS_VIA_GPRS);
+        buf.writeBytes(content.getBytes(StandardCharsets.US_ASCII));
+        buf.writeShort(Checksum.crc16(Checksum.CRC16_KERMIT, buf.toByteBuffer(2, buf.writerIndex() - 2)));
+
+        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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