aboutsummaryrefslogtreecommitdiff
path: root/src/org/traccar/protocol/WristbandProtocolDecoder.java
diff options
context:
space:
mode:
Diffstat (limited to 'src/org/traccar/protocol/WristbandProtocolDecoder.java')
-rw-r--r--src/org/traccar/protocol/WristbandProtocolDecoder.java146
1 files changed, 146 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/WristbandProtocolDecoder.java b/src/org/traccar/protocol/WristbandProtocolDecoder.java
new file mode 100644
index 000000000..f62836765
--- /dev/null
+++ b/src/org/traccar/protocol/WristbandProtocolDecoder.java
@@ -0,0 +1,146 @@
+/*
+ * Copyright 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.helper.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.regex.Pattern;
+
+public class WristbandProtocolDecoder extends BaseProtocolDecoder {
+
+ public WristbandProtocolDecoder(WristbandProtocol protocol) {
+ super(protocol);
+ }
+
+ private void sendResponse(
+ Channel channel, String imei, String version, int type, String data) {
+
+ if (channel != null) {
+ String sentence = String.format("YX%s|%s|0|{F%d#%s}\r\n", imei, version, type, data);
+ ByteBuf response = Unpooled.buffer();
+ response.writeBytes(new byte[]{0x00, 0x01, 0x02});
+ response.writeShort(sentence.length());
+ response.writeCharSequence(sentence, StandardCharsets.US_ASCII);
+ response.writeBytes(new byte[]{(byte) 0xFF, (byte) 0xFE, (byte) 0xFC});
+ channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+ }
+ }
+
+ private static final Pattern PATTERN = new PatternBuilder()
+ .expression("..") // header
+ .number("(d+)|") // imei
+ .number("(vd+.d+)|") // version
+ .number("d+|") // model
+ .text("{")
+ .number("F(d+)") // function
+ .groupBegin()
+ .text("#")
+ .expression("(.*)") // data
+ .groupEnd("?")
+ .text("}")
+ .text("\r\n")
+ .compile();
+
+ private Position decodePosition(DeviceSession deviceSession, String sentence) throws ParseException {
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ String[] values = sentence.split(",");
+
+ position.setValid(true);
+ position.setLongitude(Double.parseDouble(values[0]));
+ position.setLatitude(Double.parseDouble(values[1]));
+ position.setTime(new SimpleDateFormat("yyyyMMddHHmmss").parse(values[2]));
+ position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(values[3])));
+
+ return position;
+ }
+
+ private List<Position> decodeMessage(
+ Channel channel, SocketAddress remoteAddress, String sentence) throws ParseException {
+
+ Parser parser = new Parser(PATTERN, sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ String imei = parser.next();
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ String version = parser.next();
+ int type = parser.nextInt();
+
+ List<Position> positions = new LinkedList<>();
+
+ switch (type) {
+ case 90:
+ sendResponse(channel, imei, version, type, getServer(channel));
+ break;
+ case 91:
+ String time = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date());
+ sendResponse(channel, imei, version, type, time + "|" + getServer(channel));
+ break;
+ case 1:
+ sendResponse(channel, imei, version, type, "0");
+ break;
+ case 2:
+ for (String fragment : parser.next().split("\\|")) {
+ positions.add(decodePosition(deviceSession, fragment));
+ }
+ break;
+ default:
+ break;
+ }
+
+ return positions.isEmpty() ? null : positions;
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+ buf.skipBytes(3); // header
+ buf.readUnsignedShort(); // length
+
+ String sentence = buf.toString(buf.readerIndex(), buf.readableBytes() - 3, StandardCharsets.US_ASCII);
+
+ buf.skipBytes(3); // footer
+
+ return decodeMessage(channel, remoteAddress, sentence);
+ }
+
+}