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authorAnton Tananaev <anton.tananaev@gmail.com>2015-02-24 09:36:04 +1300
committerAnton Tananaev <anton.tananaev@gmail.com>2015-02-24 09:36:04 +1300
commite31017a798a2f6404569ab52be60e6f4846db576 (patch)
treeaf48a4d62266d09d8e7f42f38eafba43d7fa8692 /src/org/traccar/protocol/AutoFon45FrameDecoder.java
parentd437564381fafb807f61da0d2477e50a5d14d381 (diff)
parentd96638ab083af4134a54536abd00d3810627699d (diff)
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Merge pull request #1091 from vitalidze/autofon45
Implemented AutoFon 4.5 protocol
Diffstat (limited to 'src/org/traccar/protocol/AutoFon45FrameDecoder.java')
-rw-r--r--src/org/traccar/protocol/AutoFon45FrameDecoder.java57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/AutoFon45FrameDecoder.java b/src/org/traccar/protocol/AutoFon45FrameDecoder.java
new file mode 100644
index 000000000..e388273cf
--- /dev/null
+++ b/src/org/traccar/protocol/AutoFon45FrameDecoder.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2015 Vitaly Litvak (vitavaque@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.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.handler.codec.frame.FrameDecoder;
+
+public class AutoFon45FrameDecoder extends FrameDecoder {
+
+ static final int MSG_LOGIN = 0x41;
+ static final int MSG_LOCATION = 0x02;
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx,
+ Channel channel,
+ ChannelBuffer buf) throws Exception {
+
+ // Check minimum length
+ if (buf.readableBytes() < 12) {
+ return null;
+ }
+
+ int length = 0;
+ switch (buf.getUnsignedByte(buf.readerIndex())) {
+ case MSG_LOGIN:
+ length = 19;
+ break;
+ case MSG_LOCATION:
+ length = 34;
+ break;
+ }
+
+ // Check length and return buffer
+ if (length != 0 && buf.readableBytes() >= length) {
+ return buf.readBytes(length);
+ }
+
+ return null;
+ }
+
+}