/* * Copyright 2012 - 2020 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; import io.netty.channel.Channel; import io.netty.channel.socket.DatagramChannel; import io.netty.handler.codec.http.HttpRequestDecoder; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.traccar.config.Config; import org.traccar.config.Keys; import org.traccar.database.CommandsManager; import org.traccar.database.ConnectionManager; import org.traccar.database.IdentityManager; import org.traccar.database.StatisticsManager; import org.traccar.helper.UnitsConverter; import org.traccar.model.Command; import org.traccar.model.Device; import org.traccar.model.Position; import java.net.InetSocketAddress; import java.net.SocketAddress; import java.util.Collection; import java.util.Date; import java.util.HashMap; import java.util.HashSet; import java.util.Map; import java.util.Set; import java.util.TimeZone; public abstract class BaseProtocolDecoder extends ExtendedObjectDecoder { private static final Logger LOGGER = LoggerFactory.getLogger(BaseProtocolDecoder.class); private static final String PROTOCOL_UNKNOWN = "unknown"; private final Config config = Context.getConfig(); private final IdentityManager identityManager = Context.getIdentityManager(); private final ConnectionManager connectionManager = Context.getConnectionManager(); private final StatisticsManager statisticsManager; private final Protocol protocol; public BaseProtocolDecoder(Protocol protocol) { this.protocol = protocol; statisticsManager = Main.getInjector() != null ? Main.getInjector().getInstance(StatisticsManager.class) : null; } public String getProtocolName() { return protocol != null ? protocol.getName() : PROTOCOL_UNKNOWN; } public String getServer(Channel channel, char delimiter) { String server = config.getString(Keys.PROTOCOL_SERVER.withPrefix(getProtocolName())); if (server == null && channel != null) { InetSocketAddress address = (InetSocketAddress) channel.localAddress(); server = address.getAddress().getHostAddress() + ":" + address.getPort(); } return server != null ? server.replace(':', delimiter) : null; } protected double convertSpeed(double value, String defaultUnits) { switch (config.getString(getProtocolName() + ".speed", defaultUnits)) { case "kmh": return UnitsConverter.knotsFromKph(value); case "mps": return UnitsConverter.knotsFromMps(value); case "mph": return UnitsConverter.knotsFromMph(value); case "kn": default: return value; } } protected TimeZone getTimeZone(long deviceId) { return getTimeZone(deviceId, "UTC"); } protected TimeZone getTimeZone(long deviceId, String defaultTimeZone) { TimeZone result = TimeZone.getTimeZone(defaultTimeZone); String timeZoneName = identityManager.lookupAttributeString(deviceId, "decoder.timezone", null, false, true); if (timeZoneName != null) { result = TimeZone.getTimeZone(timeZoneName); } return result; } private DeviceSession channelDeviceSession; // connection-based protocols private final Map<SocketAddress, DeviceSession> addressDeviceSessions = new HashMap<>(); // connectionless protocols private long findDeviceId(SocketAddress remoteAddress, String... uniqueIds) { if (uniqueIds.length > 0) { long deviceId = 0; Device device = null; try { for (String uniqueId : uniqueIds) { if (uniqueId != null) { device = identityManager.getByUniqueId(uniqueId); if (device != null) { deviceId = device.getId(); break; } } } } catch (Exception e) { LOGGER.warn("Find device error", e); } if (deviceId == 0 && config.getBoolean(Keys.DATABASE_REGISTER_UNKNOWN)) { return identityManager.addUnknownDevice(uniqueIds[0]); } if (device != null && !device.getDisabled()) { return deviceId; } StringBuilder message = new StringBuilder(); if (deviceId == 0) { message.append("Unknown device -"); } else { message.append("Disabled device -"); } for (String uniqueId : uniqueIds) { message.append(" ").append(uniqueId); } if (remoteAddress != null) { message.append(" (").append(((InetSocketAddress) remoteAddress).getHostString()).append(")"); } LOGGER.warn(message.toString()); } return 0; } public DeviceSession getDeviceSession(Channel channel, SocketAddress remoteAddress, String... uniqueIds) { return getDeviceSession(channel, remoteAddress, false, uniqueIds); } public DeviceSession getDeviceSession( Channel channel, SocketAddress remoteAddress, boolean ignoreCache, String... uniqueIds) { if (channel != null && BasePipelineFactory.getHandler(channel.pipeline(), HttpRequestDecoder.class) != null || ignoreCache || config.getBoolean(Keys.PROTOCOL_IGNORE_SESSIONS_CACHE.withPrefix(getProtocolName())) || config.getBoolean(Keys.DECODER_IGNORE_SESSIONS_CACHE)) { long deviceId = findDeviceId(remoteAddress, uniqueIds); if (deviceId != 0) { if (connectionManager != null) { connectionManager.addActiveDevice(deviceId, protocol, channel, remoteAddress); } return new DeviceSession(deviceId); } else { return null; } } if (channel instanceof DatagramChannel) { long deviceId = findDeviceId(remoteAddress, uniqueIds); DeviceSession deviceSession = addressDeviceSessions.get(remoteAddress); if (deviceSession != null && (deviceSession.getDeviceId() == deviceId || uniqueIds.length == 0)) { return deviceSession; } else if (deviceId != 0) { deviceSession = new DeviceSession(deviceId); addressDeviceSessions.put(remoteAddress, deviceSession); if (connectionManager != null) { connectionManager.addActiveDevice(deviceId, protocol, channel, remoteAddress); } return deviceSession; } else { return null; } } else { if (channelDeviceSession == null) { long deviceId = findDeviceId(remoteAddress, uniqueIds); if (deviceId != 0) { channelDeviceSession = new DeviceSession(deviceId); if (connectionManager != null) { connectionManager.addActiveDevice(deviceId, protocol, channel, remoteAddress); } } } return channelDeviceSession; } } public void getLastLocation(Position position, Date deviceTime) { if (position.getDeviceId() != 0) { position.setOutdated(true); Position last = identityManager.getLastPosition(position.getDeviceId()); if (last != null) { position.setFixTime(last.getFixTime()); position.setValid(last.getValid()); position.setLatitude(last.getLatitude()); position.setLongitude(last.getLongitude()); position.setAltitude(last.getAltitude()); position.setSpeed(last.getSpeed()); position.setCourse(last.getCourse()); position.setAccuracy(last.getAccuracy()); } else { position.setFixTime(new Date(0)); } if (deviceTime != null) { position.setDeviceTime(deviceTime); } else { position.setDeviceTime(new Date()); } } } @Override protected void onMessageEvent( Channel channel, SocketAddress remoteAddress, Object originalMessage, Object decodedMessage) { if (statisticsManager != null) { statisticsManager.registerMessageReceived(); } Set<Long> deviceIds = new HashSet<>(); if (decodedMessage != null) { if (decodedMessage instanceof Position) { deviceIds.add(((Position) decodedMessage).getDeviceId()); } else if (decodedMessage instanceof Collection) { Collection<Position> positions = (Collection) decodedMessage; for (Position position : positions) { deviceIds.add(position.getDeviceId()); } } } if (deviceIds.isEmpty()) { DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); if (deviceSession != null) { deviceIds.add(deviceSession.getDeviceId()); } } for (long deviceId : deviceIds) { connectionManager.updateDevice(deviceId, Device.STATUS_ONLINE, new Date()); sendQueuedCommands(channel, remoteAddress, deviceId); } } protected void sendQueuedCommands(Channel channel, SocketAddress remoteAddress, long deviceId) { CommandsManager commandsManager = Context.getCommandsManager(); if (commandsManager != null) { for (Command command : commandsManager.readQueuedCommands(deviceId)) { protocol.sendDataCommand(channel, remoteAddress, command); } } } @Override protected Object handleEmptyMessage(Channel channel, SocketAddress remoteAddress, Object msg) { DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); if (config.getBoolean(Keys.DATABASE_SAVE_EMPTY) && deviceSession != null) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); getLastLocation(position, null); return position; } else { return null; } } }