aboutsummaryrefslogtreecommitdiff
path: root/src/org/traccar/protocol/WatchProtocolDecoder.java
blob: bb760b3a0e97b66d9911b1cf9bc01461178ead46 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
/*
 * Copyright 2015 - 2017 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 org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.BitUtil;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
import org.traccar.model.Position;
import org.traccar.model.WifiAccessPoint;

import java.net.SocketAddress;
import java.util.Date;
import java.util.regex.Pattern;

public class WatchProtocolDecoder extends BaseProtocolDecoder {

    public WatchProtocolDecoder(WatchProtocol protocol) {
        super(protocol);
    }

    private static final Pattern PATTERN = new PatternBuilder()
            .text("[")
            .expression("(..)").text("*")        // manufacturer
            .number("(d+)").text("*")            // equipment id
            .number("xxxx").text("*")            // length
            .expression("([^,]+)")               // type
            .expression("(.*)")                  // content
            .compile();

    private static final Pattern PATTERN_POSITION = new PatternBuilder()
            .text(",")
            .number("(dd)(dd)(dd),")             // date (ddmmyy)
            .number("(dd)(dd)(dd),")             // time
            .expression("([AV]),")               // validity
            .number(" *(-?d+.d+),")              // latitude
            .expression("([NS]),")
            .number(" *(-?d+.d+),")              // longitude
            .expression("([EW])?,")
            .number("(d+.d+),")                  // speed
            .number("(d+.?d*),")                 // course
            .number("(d+.?d*),")                 // altitude
            .number("(d+),")                     // satellites
            .number("(d+),")                     // rssi
            .number("(d+),")                     // battery
            .number("(d+),")                     // steps
            .number("d+,")                       // tumbles
            .number("(x+),")                     // status
            .expression("([^\\]]*)")             // cell and wifi
            .text("]").optional()
            .compile();

    private void sendResponse(Channel channel, String manufacturer, String id, String content) {
        if (channel != null) {
            channel.write(String.format(
                    "[%s*%s*%04x*%s]", manufacturer, id, content.length(), content));
        }
    }

    private String decodeAlarm(int status) {
        if (BitUtil.check(status, 0)) {
            return Position.ALARM_LOW_BATTERY;
        } else if (BitUtil.check(status, 1)) {
            return Position.ALARM_GEOFENCE_EXIT;
        } else if (BitUtil.check(status, 2)) {
            return Position.ALARM_GEOFENCE_ENTER;
        } else if (BitUtil.check(status, 3)) {
            return Position.ALARM_OVERSPEED;
        } else if (BitUtil.check(status, 16)) {
            return Position.ALARM_SOS;
        } else if (BitUtil.check(status, 17)) {
            return Position.ALARM_LOW_BATTERY;
        } else if (BitUtil.check(status, 18)) {
            return Position.ALARM_GEOFENCE_EXIT;
        } else if (BitUtil.check(status, 19)) {
            return Position.ALARM_GEOFENCE_ENTER;
        }
        return null;
    }

    private void decodeLbs(Position position, String data) {
        String[] values = data.split(",");
        int index = 0;

        Network network = new Network();

        int cellCount = Integer.parseInt(values[index++]);
        index += 1; // timing advance
        int mcc = Integer.parseInt(values[index++]);
        int mnc = Integer.parseInt(values[index++]);

        for (int i = 0; i < cellCount; i++) {
            network.addCellTower(CellTower.from(mcc, mnc,
                    Integer.parseInt(values[index++]), Integer.parseInt(values[index++]),
                    Integer.parseInt(values[index++])));
        }

        if (index < values.length && !values[index].isEmpty()) {
            int wifiCount = Integer.parseInt(values[index++]);

            for (int i = 0; i < wifiCount; i++) {
                index += 1; // wifi name
                network.addWifiAccessPoint(WifiAccessPoint.from(
                        values[index++], Integer.parseInt(values[index++])));
            }
        }

        position.setNetwork(network);
    }

    @Override
    protected Object decode(
            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

        Parser parser = new Parser(PATTERN, (String) msg);
        if (!parser.matches()) {
            return null;
        }

        String manufacturer = parser.next();
        String id = parser.next();
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
        if (deviceSession == null) {
            return null;
        }

        String type = parser.next();
        String content = parser.next();

        if (type.equals("LK")) {

            sendResponse(channel, manufacturer, id, "LK");

            if (!content.isEmpty()) {
                String[] values = content.split(",");
                if (values.length >= 4) {
                    Position position = new Position();
                    position.setProtocol(getProtocolName());
                    position.setDeviceId(deviceSession.getDeviceId());

                    getLastLocation(position, null);

                    position.set(Position.KEY_BATTERY, values[3]);

                    return position;
                }
            }

        } else if (type.equals("UD") || type.equals("UD2") || type.equals("AL")) {

            if (type.equals("AL")) {
                sendResponse(channel, manufacturer, id, "AL");
            }

            parser = new Parser(PATTERN_POSITION, content);
            if (!parser.matches()) {
                return null;
            }

            Position position = new Position();
            position.setProtocol(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            DateBuilder dateBuilder = new DateBuilder()
                    .setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt())
                    .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
            position.setTime(dateBuilder.getDate());

            position.setValid(parser.next().equals("A"));
            position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
            position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
            position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
            position.setCourse(parser.nextDouble());
            position.setAltitude(parser.nextDouble());

            position.set(Position.KEY_SATELLITES, parser.nextInt());
            position.set(Position.KEY_RSSI, parser.nextInt());
            position.set(Position.KEY_BATTERY, parser.nextInt());

            position.set("steps", parser.nextInt());

            position.set(Position.KEY_ALARM, decodeAlarm(parser.nextInt(16)));

            decodeLbs(position, parser.next());

            return position;

        } else if (type.equals("TKQ")) {

            sendResponse(channel, manufacturer, id, "TKQ");

        } else if (type.equals("PULSE")) {

            Position position = new Position();
            position.setProtocol(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());
            getLastLocation(position, new Date());
            position.setValid(false);
            String pulse = content.substring(1);
            position.set("pulse", pulse);
            position.set(Position.KEY_RESULT, pulse);
            return position;

        }

        return null;
    }

}