diff options
Diffstat (limited to 'src/org/traccar/protocol/Gl200FrameDecoder.java')
-rw-r--r-- | src/org/traccar/protocol/Gl200FrameDecoder.java | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/src/org/traccar/protocol/Gl200FrameDecoder.java b/src/org/traccar/protocol/Gl200FrameDecoder.java deleted file mode 100644 index c192cc28d..000000000 --- a/src/org/traccar/protocol/Gl200FrameDecoder.java +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Copyright 2017 - 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.traccar.BaseFrameDecoder; - -import io.netty.buffer.ByteBuf; -import io.netty.channel.Channel; -import io.netty.channel.ChannelHandlerContext; - -import java.nio.charset.StandardCharsets; -import java.util.Arrays; -import java.util.HashSet; -import java.util.Set; - -public class Gl200FrameDecoder extends BaseFrameDecoder { - - private static final int MINIMUM_LENGTH = 11; - - private static final Set<String> BINARY_HEADERS = new HashSet<>( - Arrays.asList("+RSP", "+BSP", "+EVT", "+BVT", "+INF", "+BNF", "+HBD", "+CRD", "+BRD")); - - public static boolean isBinary(ByteBuf buf) { - String header = buf.toString(buf.readerIndex(), 4, StandardCharsets.US_ASCII); - if (header.equals("+ACK")) { - return buf.getByte(buf.readerIndex() + header.length()) != (byte) ':'; - } else { - return BINARY_HEADERS.contains(header); - } - } - - @Override - protected Object decode( - ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception { - - if (buf.readableBytes() < MINIMUM_LENGTH) { - return null; - } - - if (isBinary(buf)) { - - int length; - switch (buf.toString(buf.readerIndex(), 4, StandardCharsets.US_ASCII)) { - case "+ACK": - length = buf.getUnsignedByte(buf.readerIndex() + 6); - break; - case "+INF": - case "+BNF": - length = buf.getUnsignedShort(buf.readerIndex() + 7); - break; - case "+HBD": - length = buf.getUnsignedByte(buf.readerIndex() + 5); - break; - case "+CRD": - case "+BRD": - length = buf.getUnsignedShort(buf.readerIndex() + 6); - break; - default: - length = buf.getUnsignedShort(buf.readerIndex() + 9); - break; - } - - if (buf.readableBytes() >= length) { - return buf.readRetainedSlice(length); - } - - } else { - - int endIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '$'); - if (endIndex < 0) { - endIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0); - } - if (endIndex > 0) { - ByteBuf frame = buf.readRetainedSlice(endIndex - buf.readerIndex()); - buf.readByte(); // delimiter - return frame; - } - - } - - return null; - } - -} |