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/*
* Copyright 2021 - 2022 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.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.NetworkMessage;
import org.traccar.Protocol;
import org.traccar.model.Position;
import org.traccar.session.DeviceSession;
import jakarta.json.Json;
import jakarta.json.JsonObject;
import jakarta.json.JsonValue;
import java.io.StringReader;
import java.net.SocketAddress;
import java.util.Date;
public class StbProtocolDecoder extends BaseProtocolDecoder {
public StbProtocolDecoder(Protocol protocol) {
super(protocol);
}
public static final int MSG_LOGIN = 110;
public static final int MSG_PROPERTY = 310;
public static final int MSG_ALARM = 410;
private void sendResponse(
Channel channel, SocketAddress remoteAddress, int type, String deviceId, JsonObject root) {
String response = String.format(
"{ \"msgType\": %d, \"devId\": \"%s\", \"result\": 1, \"txnNo\": \"%s\" }",
type + 1, deviceId, root.getString("txnNo"));
if (channel != null) {
channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
JsonObject root = Json.createReader(new StringReader((String) msg)).readObject();
int type = root.getInt("msgType");
String deviceId = root.getString("devId");
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, deviceId);
if (deviceSession == null) {
return null;
}
sendResponse(channel, remoteAddress, type, deviceId, root);
if (type == MSG_PROPERTY || type == MSG_ALARM) {
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
if (type == MSG_PROPERTY) {
int locationType = 0;
for (JsonValue property : root.getJsonArray("attrList")) {
JsonObject propertyObject = property.asJsonObject();
String id = propertyObject.getString("id");
switch (id) {
case "01101001" -> locationType = Integer.parseInt(propertyObject.getString("value"));
case "01102001" -> position.setLongitude(
Double.parseDouble(propertyObject.getString("value")));
case "01103001" -> position.setLatitude(
Double.parseDouble(propertyObject.getString("value")));
case "01118001" -> position.set(
Position.KEY_DEVICE_TEMP, Double.parseDouble(propertyObject.getString("value")));
case "01122001" -> position.set(
"batteryControl", Integer.parseInt(propertyObject.getString("value")));
case "02301001" -> position.set(
"switchCabinetCommand", Integer.parseInt(propertyObject.getString("value")));
default -> {
String key = "id" + id;
if (propertyObject.containsKey("doorId")) {
key += "Door" + propertyObject.getString("doorId");
}
position.set(key, propertyObject.getString("value"));
}
}
}
if (locationType > 0) {
position.setTime(new Date());
position.setValid(locationType != 5);
if (locationType == 2 || locationType == 4) {
position.setLongitude(-position.getLongitude());
}
if (locationType == 3 || locationType == 4) {
position.setLatitude(-position.getLatitude());
}
} else {
getLastLocation(position, null);
}
}
return position;
}
return null;
}
}
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