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| author | Anton Tananaev <anton.tananaev@gmail.com> | 2013-08-11 01:38:22 +1200 |
|---|---|---|
| committer | Anton Tananaev <anton.tananaev@gmail.com> | 2013-08-11 01:38:22 +1200 |
| commit | c72c0b15ea8cfd0d2642e05af94a876fe525e447 (patch) | |
| tree | b9d39e8597e1d9f672f27d06fdb8a2b2ec3b77fb /src/org/traccar/protocol/AplicomFrameDecoder.java | |
| parent | 4c315abb231562bd90ccd97c8db945dde9ee80c9 (diff) | |
| download | trackermap-server-c72c0b15ea8cfd0d2642e05af94a876fe525e447.tar.gz trackermap-server-c72c0b15ea8cfd0d2642e05af94a876fe525e447.tar.bz2 trackermap-server-c72c0b15ea8cfd0d2642e05af94a876fe525e447.zip | |
Implement Aplicom protocol (fix #202)
Diffstat (limited to 'src/org/traccar/protocol/AplicomFrameDecoder.java')
| -rw-r--r-- | src/org/traccar/protocol/AplicomFrameDecoder.java | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/AplicomFrameDecoder.java b/src/org/traccar/protocol/AplicomFrameDecoder.java new file mode 100644 index 000000000..7dec3b511 --- /dev/null +++ b/src/org/traccar/protocol/AplicomFrameDecoder.java @@ -0,0 +1,59 @@ +/*
+ * 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 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 AplicomFrameDecoder extends FrameDecoder{
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx,
+ Channel channel,
+ ChannelBuffer buf) throws Exception {
+
+ // Check minimum length
+ if (buf.readableBytes() < 11) {
+ return null;
+ }
+
+ // Read flags
+ int version = buf.getUnsignedByte(buf.readerIndex() + 1);
+ int offset = 1 + 1 + 3;
+ if ((version & 0x80) != 0) {
+ offset += 4;
+ }
+
+ // Get data length
+ int length = buf.getUnsignedShort(buf.readerIndex() + offset);
+ offset += 2;
+ if ((version & 0x40) != 0) {
+ offset += 3;
+ }
+ length += offset; // add header
+
+ // Return buffer
+ if (buf.readableBytes() >= length) {
+ return buf.readBytes(length);
+ }
+
+ return null;
+ }
+
+}
|