diff options
Diffstat (limited to 'src/main/java/org/traccar/protocol/ApelProtocolDecoder.java')
| -rw-r--r-- | src/main/java/org/traccar/protocol/ApelProtocolDecoder.java | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/ApelProtocolDecoder.java b/src/main/java/org/traccar/protocol/ApelProtocolDecoder.java new file mode 100644 index 000000000..c95a0366a --- /dev/null +++ b/src/main/java/org/traccar/protocol/ApelProtocolDecoder.java @@ -0,0 +1,210 @@ +/* + * Copyright 2013 - 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.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.Checksum; +import org.traccar.helper.UnitsConverter; +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 ApelProtocolDecoder extends BaseProtocolDecoder { + + private long lastIndex; + private long newIndex; + + public ApelProtocolDecoder(Protocol protocol) { + super(protocol); + } + + public static final short MSG_NULL = 0; + public static final short MSG_REQUEST_TRACKER_ID = 10; + public static final short MSG_TRACKER_ID = 11; + public static final short MSG_TRACKER_ID_EXT = 12; + public static final short MSG_DISCONNECT = 20; + public static final short MSG_REQUEST_PASSWORD = 30; + public static final short MSG_PASSWORD = 31; + public static final short MSG_REQUEST_STATE_FULL_INFO = 90; + public static final short MSG_STATE_FULL_INFO_T104 = 92; + public static final short MSG_REQUEST_CURRENT_GPS_DATA = 100; + public static final short MSG_CURRENT_GPS_DATA = 101; + public static final short MSG_REQUEST_SENSORS_STATE = 110; + public static final short MSG_SENSORS_STATE = 111; + public static final short MSG_SENSORS_STATE_T100 = 112; + public static final short MSG_SENSORS_STATE_T100_4 = 113; + public static final short MSG_REQUEST_LAST_LOG_INDEX = 120; + public static final short MSG_LAST_LOG_INDEX = 121; + public static final short MSG_REQUEST_LOG_RECORDS = 130; + public static final short MSG_LOG_RECORDS = 131; + public static final short MSG_EVENT = 141; + public static final short MSG_TEXT = 150; + public static final short MSG_ACK_ALARM = 160; + public static final short MSG_SET_TRACKER_MODE = 170; + public static final short MSG_GPRS_COMMAND = 180; + + private void sendSimpleMessage(Channel channel, short type) { + ByteBuf request = Unpooled.buffer(8); + request.writeShortLE(type); + request.writeShortLE(0); + request.writeIntLE(Checksum.crc32(request.nioBuffer(0, 4))); + channel.writeAndFlush(new NetworkMessage(request, channel.remoteAddress())); + } + + private void requestArchive(Channel channel) { + if (lastIndex == 0) { + lastIndex = newIndex; + } else if (newIndex > lastIndex) { + ByteBuf request = Unpooled.buffer(14); + request.writeShortLE(MSG_REQUEST_LOG_RECORDS); + request.writeShortLE(6); + request.writeIntLE((int) lastIndex); + request.writeShortLE(512); + request.writeIntLE(Checksum.crc32(request.nioBuffer(0, 10))); + 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(); + boolean alarm = (type & 0x8000) != 0; + type = type & 0x7FFF; + buf.readUnsignedShortLE(); // length + + if (alarm) { + sendSimpleMessage(channel, MSG_ACK_ALARM); + } + + if (type == MSG_TRACKER_ID) { + return null; // unsupported authentication type + } + + if (type == MSG_TRACKER_ID_EXT) { + + buf.readUnsignedIntLE(); // id + int length = buf.readUnsignedShortLE(); + buf.skipBytes(length); + length = buf.readUnsignedShortLE(); + getDeviceSession(channel, remoteAddress, buf.readSlice(length).toString(StandardCharsets.US_ASCII)); + + } else if (type == MSG_LAST_LOG_INDEX) { + + long index = buf.readUnsignedIntLE(); + if (index > 0) { + newIndex = index; + requestArchive(channel); + } + + } else if (type == MSG_CURRENT_GPS_DATA || type == MSG_STATE_FULL_INFO_T104 || type == MSG_LOG_RECORDS) { + + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); + if (deviceSession == null) { + return null; + } + + List<Position> positions = new LinkedList<>(); + + int recordCount = 1; + if (type == MSG_LOG_RECORDS) { + recordCount = buf.readUnsignedShortLE(); + } + + for (int j = 0; j < recordCount; j++) { + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + int subtype = type; + if (type == MSG_LOG_RECORDS) { + position.set(Position.KEY_ARCHIVE, true); + lastIndex = buf.readUnsignedIntLE() + 1; + position.set(Position.KEY_INDEX, lastIndex); + + subtype = buf.readUnsignedShortLE(); + if (subtype != MSG_CURRENT_GPS_DATA && subtype != MSG_STATE_FULL_INFO_T104) { + buf.skipBytes(buf.readUnsignedShortLE()); + continue; + } + buf.readUnsignedShortLE(); // length + } + + position.setTime(new Date(buf.readUnsignedIntLE() * 1000)); + position.setLatitude(buf.readIntLE() * 180.0 / 0x7FFFFFFF); + position.setLongitude(buf.readIntLE() * 180.0 / 0x7FFFFFFF); + + if (subtype == MSG_STATE_FULL_INFO_T104) { + int speed = buf.readUnsignedByte(); + position.setValid(speed != 255); + position.setSpeed(UnitsConverter.knotsFromKph(speed)); + position.set(Position.KEY_HDOP, buf.readByte()); + } else { + int speed = buf.readShortLE(); + position.setValid(speed != -1); + position.setSpeed(UnitsConverter.knotsFromKph(speed * 0.01)); + } + + position.setCourse(buf.readShortLE() * 0.01); + position.setAltitude(buf.readShortLE()); + + if (subtype == MSG_STATE_FULL_INFO_T104) { + + position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); + position.set(Position.KEY_RSSI, buf.readUnsignedByte()); + position.set(Position.KEY_EVENT, buf.readUnsignedShortLE()); + position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE()); + position.set(Position.KEY_INPUT, buf.readUnsignedByte()); + position.set(Position.KEY_OUTPUT, buf.readUnsignedByte()); + + for (int i = 1; i <= 8; i++) { + position.set(Position.PREFIX_ADC + i, buf.readUnsignedShortLE()); + } + + position.set(Position.PREFIX_COUNT + 1, buf.readUnsignedIntLE()); + position.set(Position.PREFIX_COUNT + 2, buf.readUnsignedIntLE()); + position.set(Position.PREFIX_COUNT + 3, buf.readUnsignedIntLE()); + } + + positions.add(position); + } + + buf.readUnsignedIntLE(); // crc + + if (type == MSG_LOG_RECORDS) { + requestArchive(channel); + } else { + sendSimpleMessage(channel, MSG_REQUEST_LAST_LOG_INDEX); + } + + return positions; + } + + return null; + } + +} |