diff options
Diffstat (limited to 'src/org/traccar/protocol/At2000ProtocolDecoder.java')
| -rw-r--r-- | src/org/traccar/protocol/At2000ProtocolDecoder.java | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/src/org/traccar/protocol/At2000ProtocolDecoder.java b/src/org/traccar/protocol/At2000ProtocolDecoder.java deleted file mode 100644 index 43798eb67..000000000 --- a/src/org/traccar/protocol/At2000ProtocolDecoder.java +++ /dev/null @@ -1,171 +0,0 @@ -/* - * Copyright 2016 - 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.DataConverter; -import org.traccar.helper.UnitsConverter; -import org.traccar.model.Position; - -import javax.crypto.Cipher; -import javax.crypto.spec.IvParameterSpec; -import javax.crypto.spec.SecretKeySpec; -import java.net.SocketAddress; -import java.nio.charset.StandardCharsets; -import java.util.Date; -import java.util.LinkedList; -import java.util.List; - -public class At2000ProtocolDecoder extends BaseProtocolDecoder { - - private static final int BLOCK_LENGTH = 16; - - public At2000ProtocolDecoder(Protocol protocol) { - super(protocol); - } - - public static final int MSG_ACKNOWLEDGEMENT = 0x00; - public static final int MSG_DEVICE_ID = 0x01; - public static final int MSG_TRACK_REQUEST = 0x88; - public static final int MSG_TRACK_RESPONSE = 0x89; - public static final int MSG_SESSION_END = 0x0c; - - private Cipher cipher; - - private static void sendRequest(Channel channel) { - if (channel != null) { - ByteBuf response = Unpooled.buffer(BLOCK_LENGTH); - response.writeByte(MSG_TRACK_REQUEST); - response.writeMedium(0); - response.writerIndex(BLOCK_LENGTH); - channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress())); - } - } - - @Override - protected Object decode( - Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { - - ByteBuf buf = (ByteBuf) msg; - - if (buf.getUnsignedByte(buf.readerIndex()) == 0x01) { - buf.readUnsignedByte(); // codec id - } - - int type = buf.readUnsignedByte(); - buf.readUnsignedMediumLE(); // length - buf.skipBytes(BLOCK_LENGTH - 1 - 3); - - if (type == MSG_DEVICE_ID) { - - String imei = buf.readSlice(15).toString(StandardCharsets.US_ASCII); - if (getDeviceSession(channel, remoteAddress, imei) != null) { - - byte[] iv = new byte[BLOCK_LENGTH]; - buf.readBytes(iv); - IvParameterSpec ivSpec = new IvParameterSpec(iv); - - SecretKeySpec keySpec = new SecretKeySpec( - DataConverter.parseHex("000102030405060708090a0b0c0d0e0f"), "AES"); - - cipher = Cipher.getInstance("AES/CBC/NoPadding"); - cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec); - - byte[] data = new byte[BLOCK_LENGTH]; - buf.readBytes(data); - cipher.update(data); - - } - - } else if (type == MSG_TRACK_RESPONSE) { - - DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); - if (deviceSession == null) { - return null; - } - - if (buf.capacity() <= BLOCK_LENGTH) { - return null; // empty message - } - - List<Position> positions = new LinkedList<>(); - - byte[] data = new byte[buf.capacity() - BLOCK_LENGTH]; - buf.readBytes(data); - buf = Unpooled.wrappedBuffer(cipher.update(data)); - try { - while (buf.readableBytes() >= 63) { - - Position position = new Position(getProtocolName()); - position.setDeviceId(deviceSession.getDeviceId()); - - buf.readUnsignedShortLE(); // index - buf.readUnsignedShortLE(); // reserved - - position.setValid(true); - - position.setTime(new Date(buf.readLongLE() * 1000)); - - position.setLatitude(buf.readFloatLE()); - position.setLongitude(buf.readFloatLE()); - position.setAltitude(buf.readFloatLE()); - position.setSpeed(UnitsConverter.knotsFromKph(buf.readFloatLE())); - position.setCourse(buf.readFloatLE()); - - buf.readUnsignedIntLE(); // geozone event - buf.readUnsignedIntLE(); // io events - buf.readUnsignedIntLE(); // geozone value - buf.readUnsignedIntLE(); // io values - buf.readUnsignedShortLE(); // operator - - position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE()); - position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE()); - - position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.001); - - buf.readUnsignedShortLE(); // cid - position.set(Position.KEY_RSSI, buf.readUnsignedByte()); - buf.readUnsignedByte(); // current profile - - position.set(Position.KEY_BATTERY, buf.readUnsignedByte()); - position.set(Position.PREFIX_TEMP + 1, buf.readUnsignedByte()); - position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); - - positions.add(position); - - } - } finally { - buf.release(); - } - - return positions; - - } - - if (type == MSG_DEVICE_ID) { - sendRequest(channel); - } - - return null; - } - -} |