diff options
Diffstat (limited to 'src/main/java/org')
5 files changed, 155 insertions, 7 deletions
diff --git a/src/main/java/org/traccar/helper/Checksum.java b/src/main/java/org/traccar/helper/Checksum.java index 8c3d0063a..db5817275 100644 --- a/src/main/java/org/traccar/helper/Checksum.java +++ b/src/main/java/org/traccar/helper/Checksum.java @@ -200,4 +200,19 @@ public final class Checksum { return (10 - (checksum % 10)) % 10; } + public static int ip(ByteBuffer data) { + int sum = 0; + while (data.remaining() > 0) { + sum += data.get() & 0xff; + if ((sum & 0x80000000) > 0) { + sum = (sum & 0xffff) + (sum >> 16); + } + } + while ((sum >> 16) > 0) { + sum = (sum & 0xffff) + sum >> 16; + } + sum = (sum == 0xffff) ? sum & 0xffff : (~sum) & 0xffff; + return sum; + } + } diff --git a/src/main/java/org/traccar/protocol/Xexun2FrameEncoder.java b/src/main/java/org/traccar/protocol/Xexun2FrameEncoder.java new file mode 100644 index 000000000..52d43c36c --- /dev/null +++ b/src/main/java/org/traccar/protocol/Xexun2FrameEncoder.java @@ -0,0 +1,48 @@ +/* + * Copyright 2022 Stefan Clark (stefan@stefanclark.co.uk) + * + * 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 io.netty.buffer.ByteBuf; +import io.netty.channel.ChannelHandlerContext; +import io.netty.handler.codec.MessageToByteEncoder; + +public class Xexun2FrameEncoder extends MessageToByteEncoder<ByteBuf> { + + @Override + protected void encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out) { + out.writeBytes(msg.readBytes(2)); + + while (msg.readableBytes() > 2) { + int b = msg.readUnsignedByte(); + if (b == 0xfa && msg.isReadable() && msg.getUnsignedByte(msg.readerIndex()) == 0xaf) { + msg.readUnsignedByte(); + out.writeByte(0xfb); + out.writeByte(0xbf); + out.writeByte(0x01); + } else if (b == 0xfb && msg.isReadable() && msg.getUnsignedByte(msg.readerIndex()) == 0xbf) { + msg.readUnsignedByte(); + out.writeByte(0xfb); + out.writeByte(0xbf); + out.writeByte(0x02); + } else { + out.writeByte(b); + } + } + + out.writeBytes(msg.readBytes(2)); + + } +} diff --git a/src/main/java/org/traccar/protocol/Xexun2Protocol.java b/src/main/java/org/traccar/protocol/Xexun2Protocol.java index 4630a69e0..52cf731f0 100644 --- a/src/main/java/org/traccar/protocol/Xexun2Protocol.java +++ b/src/main/java/org/traccar/protocol/Xexun2Protocol.java @@ -19,6 +19,7 @@ import org.traccar.BaseProtocol; import org.traccar.PipelineBuilder; import org.traccar.TrackerServer; import org.traccar.config.Config; +import org.traccar.model.Command; import javax.inject.Inject; @@ -26,11 +27,18 @@ public class Xexun2Protocol extends BaseProtocol { @Inject public Xexun2Protocol(Config config) { + setSupportedDataCommands( + Command.TYPE_CUSTOM, + Command.TYPE_POSITION_PERIODIC, + Command.TYPE_POWER_OFF, + Command.TYPE_REBOOT_DEVICE); addServer(new TrackerServer(config, getName(), false) { @Override protected void addProtocolHandlers(PipelineBuilder pipeline, Config config) { + pipeline.addLast(new Xexun2FrameEncoder()); pipeline.addLast(new Xexun2FrameDecoder()); pipeline.addLast(new Xexun2ProtocolDecoder(Xexun2Protocol.this)); + pipeline.addLast(new Xexun2ProtocolEncoder(Xexun2Protocol.this)); } }); } diff --git a/src/main/java/org/traccar/protocol/Xexun2ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Xexun2ProtocolDecoder.java index 28e7fbda3..913dfaf28 100644 --- a/src/main/java/org/traccar/protocol/Xexun2ProtocolDecoder.java +++ b/src/main/java/org/traccar/protocol/Xexun2ProtocolDecoder.java @@ -24,6 +24,7 @@ import org.traccar.session.DeviceSession; import org.traccar.NetworkMessage; import org.traccar.Protocol; import org.traccar.helper.BitUtil; +import org.traccar.helper.Checksum; import org.traccar.helper.UnitsConverter; import org.traccar.model.CellTower; import org.traccar.model.Network; @@ -41,13 +42,14 @@ public class Xexun2ProtocolDecoder extends BaseProtocolDecoder { super(protocol); } + public static final int FLAG = 0xfaaf; + public static final int MSG_COMMAND = 0x07; public static final int MSG_POSITION = 0x14; private void sendResponse(Channel channel, int type, int index, ByteBuf imei) { if (channel != null) { ByteBuf response = Unpooled.buffer(); - response.writeByte(0xfa); - response.writeByte(0xaf); + response.writeShort(FLAG); response.writeShort(type); response.writeShort(index); @@ -56,8 +58,7 @@ public class Xexun2ProtocolDecoder extends BaseProtocolDecoder { response.writeShort(0xfffe); // checksum response.writeByte(1); // response - response.writeByte(0xfa); - response.writeByte(0xaf); + response.writeShort(FLAG); channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress())); } @@ -99,10 +100,16 @@ public class Xexun2ProtocolDecoder extends BaseProtocolDecoder { return null; } - sendResponse(channel, type, index, imei); + int payloadSize = buf.readUnsignedShort() & 0x03ff; + int checksum = buf.readUnsignedShort(); - buf.readUnsignedShort(); // attributes - buf.readUnsignedShort(); // checksum + if (checksum != Checksum.ip(buf.nioBuffer(buf.readerIndex(), payloadSize))) { + return null; + } + + if (type != MSG_COMMAND) { + sendResponse(channel, type, index, imei); + } if (type == MSG_POSITION) { List<Integer> lengths = new ArrayList<>(); diff --git a/src/main/java/org/traccar/protocol/Xexun2ProtocolEncoder.java b/src/main/java/org/traccar/protocol/Xexun2ProtocolEncoder.java new file mode 100644 index 000000000..8f3fa5672 --- /dev/null +++ b/src/main/java/org/traccar/protocol/Xexun2ProtocolEncoder.java @@ -0,0 +1,70 @@ +/* + * Copyright 2022 Stefan Clark (stefan@stefanclark.co.uk) + * + * 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 io.netty.buffer.ByteBuf; +import io.netty.buffer.Unpooled; +import org.traccar.BaseProtocolEncoder; +import org.traccar.helper.Checksum; +import org.traccar.helper.DataConverter; +import org.traccar.model.Command; +import org.traccar.Protocol; + +import java.nio.charset.StandardCharsets; + +public class Xexun2ProtocolEncoder extends BaseProtocolEncoder { + + public Xexun2ProtocolEncoder(Protocol protocol) { + super(protocol); + } + + private static ByteBuf encodeContent(String uniqueId, String content) { + ByteBuf buf = Unpooled.buffer(); + + ByteBuf message = Unpooled.copiedBuffer(content.getBytes(StandardCharsets.US_ASCII)); + + buf.writeShort(Xexun2ProtocolDecoder.FLAG); + buf.writeShort(Xexun2ProtocolDecoder.MSG_COMMAND); + buf.writeShort(1); // index + buf.writeBytes(DataConverter.parseHex(uniqueId + "0")); + buf.writeShort(message.readableBytes()); + buf.writeShort(Checksum.ip(message.nioBuffer())); + buf.writeBytes(message); + buf.writeShort(Xexun2ProtocolDecoder.FLAG); + + return buf; + } + + @Override + protected Object encodeCommand(Command command) { + String uniqueId = getUniqueId(command.getDeviceId()); + + switch (command.getType()) { + case Command.TYPE_CUSTOM: + return encodeContent(uniqueId, command.getString(Command.KEY_DATA)); + case Command.TYPE_POSITION_PERIODIC: + return encodeContent(uniqueId, + String.format("tracking_send=%1$d,%1$d", command.getInteger(Command.KEY_FREQUENCY))); + case Command.TYPE_POWER_OFF: + return encodeContent(uniqueId, "of=1"); + case Command.TYPE_REBOOT_DEVICE: + return encodeContent(uniqueId, "reset"); + default: + return null; + } + } + +} |