diff options
Diffstat (limited to 'src/main/java/org/traccar/protocol/ProgressProtocolDecoder.java')
| -rw-r--r-- | src/main/java/org/traccar/protocol/ProgressProtocolDecoder.java | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/ProgressProtocolDecoder.java b/src/main/java/org/traccar/protocol/ProgressProtocolDecoder.java new file mode 100644 index 000000000..0025cd9e7 --- /dev/null +++ b/src/main/java/org/traccar/protocol/ProgressProtocolDecoder.java @@ -0,0 +1,172 @@ +/* + * Copyright 2012 - 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 io.netty.buffer.ByteBuf; +import io.netty.buffer.ByteBufUtil; +import io.netty.buffer.Unpooled; +import io.netty.channel.Channel; +import org.traccar.BaseProtocolDecoder; +import org.traccar.DeviceSession; +import org.traccar.NetworkMessage; +import org.traccar.Protocol; +import org.traccar.helper.BitUtil; +import org.traccar.model.Position; + +import java.net.SocketAddress; +import java.nio.charset.StandardCharsets; +import java.util.Date; +import java.util.LinkedList; +import java.util.List; + +public class ProgressProtocolDecoder extends BaseProtocolDecoder { + + private long lastIndex; + private long newIndex; + + public ProgressProtocolDecoder(Protocol protocol) { + super(protocol); + } + + public static final int MSG_NULL = 0; + public static final int MSG_IDENT = 1; + public static final int MSG_IDENT_FULL = 2; + public static final int MSG_POINT = 10; + public static final int MSG_LOG_SYNC = 100; + public static final int MSG_LOGMSG = 101; + public static final int MSG_TEXT = 102; + public static final int MSG_ALARM = 200; + public static final int MSG_ALARM_RECIEVED = 201; + + private void requestArchive(Channel channel) { + if (lastIndex == 0) { + lastIndex = newIndex; + } else if (newIndex > lastIndex) { + ByteBuf request = Unpooled.buffer(12); + request.writeShortLE(MSG_LOG_SYNC); + request.writeShortLE(4); + request.writeIntLE((int) lastIndex); + request.writeIntLE(0); + channel.writeAndFlush(new NetworkMessage(request, channel.remoteAddress())); + } + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ByteBuf buf = (ByteBuf) msg; + int type = buf.readUnsignedShortLE(); + buf.readUnsignedShortLE(); // length + + if (type == MSG_IDENT || type == MSG_IDENT_FULL) { + + buf.readUnsignedIntLE(); // id + int length = buf.readUnsignedShortLE(); + buf.skipBytes(length); + length = buf.readUnsignedShortLE(); + buf.skipBytes(length); + length = buf.readUnsignedShortLE(); + String imei = buf.readSlice(length).toString(StandardCharsets.US_ASCII); + getDeviceSession(channel, remoteAddress, imei); + + } else if (type == MSG_POINT || type == MSG_ALARM || type == MSG_LOGMSG) { + + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); + if (deviceSession == null) { + return null; + } + + List<Position> positions = new LinkedList<>(); + + int recordCount = 1; + if (type == MSG_LOGMSG) { + recordCount = buf.readUnsignedShortLE(); + } + + for (int j = 0; j < recordCount; j++) { + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + if (type == MSG_LOGMSG) { + position.set(Position.KEY_ARCHIVE, true); + int subtype = buf.readUnsignedShortLE(); + if (subtype == MSG_ALARM) { + position.set(Position.KEY_ALARM, Position.ALARM_GENERAL); + } + if (buf.readUnsignedShortLE() > buf.readableBytes()) { + lastIndex += 1; + break; // workaround for device bug + } + lastIndex = buf.readUnsignedIntLE(); + position.set(Position.KEY_INDEX, lastIndex); + } else { + newIndex = buf.readUnsignedIntLE(); + } + + position.setTime(new Date(buf.readUnsignedIntLE() * 1000)); + position.setLatitude(buf.readIntLE() * 180.0 / 0x7FFFFFFF); + position.setLongitude(buf.readIntLE() * 180.0 / 0x7FFFFFFF); + position.setSpeed(buf.readUnsignedIntLE() * 0.01); + position.setCourse(buf.readUnsignedShortLE() * 0.01); + position.setAltitude(buf.readUnsignedShortLE() * 0.01); + + int satellites = buf.readUnsignedByte(); + position.setValid(satellites >= 3); + position.set(Position.KEY_SATELLITES, satellites); + + position.set(Position.KEY_RSSI, buf.readUnsignedByte()); + position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE()); + + long extraFlags = buf.readLongLE(); + + if (BitUtil.check(extraFlags, 0)) { + int count = buf.readUnsignedShortLE(); + for (int i = 1; i <= count; i++) { + position.set(Position.PREFIX_ADC + i, buf.readUnsignedShortLE()); + } + } + + if (BitUtil.check(extraFlags, 1)) { + int size = buf.readUnsignedShortLE(); + position.set("can", buf.toString(buf.readerIndex(), size, StandardCharsets.US_ASCII)); + buf.skipBytes(size); + } + + if (BitUtil.check(extraFlags, 2)) { + position.set("passenger", ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedShortLE()))); + } + + if (type == MSG_ALARM) { + position.set(Position.KEY_ALARM, true); + byte[] response = {(byte) 0xC9, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(response), remoteAddress)); + } + + buf.readUnsignedIntLE(); // crc + + positions.add(position); + } + + requestArchive(channel); + + return positions; + } + + return null; + } + +} |