diff options
author | Anton Tananaev <anton.tananaev@gmail.com> | 2018-03-27 05:55:40 +1300 |
---|---|---|
committer | Anton Tananaev <anton.tananaev@gmail.com> | 2018-03-27 05:55:40 +1300 |
commit | a959b3d754a2bd9e0f8a3b73b01061c88fe46053 (patch) | |
tree | f189b26d1a841e9b6b8abf13c0f6a7918e4c0585 /src/org/traccar/protocol/RoboTrackFrameDecoder.java | |
parent | f2d31534703eb7b56a4c1ce82d354fcbb4254266 (diff) | |
download | traccar-server-a959b3d754a2bd9e0f8a3b73b01061c88fe46053.tar.gz traccar-server-a959b3d754a2bd9e0f8a3b73b01061c88fe46053.tar.bz2 traccar-server-a959b3d754a2bd9e0f8a3b73b01061c88fe46053.zip |
Implement RoboTrack protocol
Diffstat (limited to 'src/org/traccar/protocol/RoboTrackFrameDecoder.java')
-rw-r--r-- | src/org/traccar/protocol/RoboTrackFrameDecoder.java | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/RoboTrackFrameDecoder.java b/src/org/traccar/protocol/RoboTrackFrameDecoder.java new file mode 100644 index 000000000..af215103c --- /dev/null +++ b/src/org/traccar/protocol/RoboTrackFrameDecoder.java @@ -0,0 +1,57 @@ +/* + * Copyright 2018 Anton Tananaev (anton@traccar.org) + * + * 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 RoboTrackFrameDecoder extends FrameDecoder { + + private int messageLength(ChannelBuffer buf) { + switch ((int) buf.getByte(buf.readerIndex())) { + case RoboTrackProtocolDecoder.MSG_ID: + return 69; + case RoboTrackProtocolDecoder.MSG_ACK: + return 3; + case RoboTrackProtocolDecoder.MSG_GPS: + case RoboTrackProtocolDecoder.MSG_GSM: + case RoboTrackProtocolDecoder.MSG_IMAGE_START: + return 24; + case RoboTrackProtocolDecoder.MSG_IMAGE_DATA: + return 8 + buf.getUnsignedShort(buf.readerIndex() + 1); + case RoboTrackProtocolDecoder.MSG_IMAGE_END: + return 6; + default: + return Integer.MAX_VALUE; + } + } + + @Override + protected Object decode( + ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception { + + int length = messageLength(buf); + + if (buf.readableBytes() >= length) { + return buf.readBytes(length); + } + + return null; + } + +} |