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-rw-r--r--src/main/java/org/traccar/protocol/VltProtocol.java43
-rw-r--r--src/main/java/org/traccar/protocol/VltProtocolDecoder.java137
2 files changed, 180 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/VltProtocol.java b/src/main/java/org/traccar/protocol/VltProtocol.java
new file mode 100644
index 000000000..ebced83b1
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/VltProtocol.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2023 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.handler.codec.http.HttpObjectAggregator;
+import io.netty.handler.codec.http.HttpRequestDecoder;
+import io.netty.handler.codec.http.HttpResponseEncoder;
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+import org.traccar.config.Config;
+
+import javax.inject.Inject;
+
+public class VltProtocol extends BaseProtocol {
+
+ @Inject
+ public VltProtocol(Config config) {
+ addServer(new TrackerServer(config, getName(), false) {
+ @Override
+ protected void addProtocolHandlers(PipelineBuilder pipeline, Config config) {
+ pipeline.addLast(new HttpResponseEncoder());
+ pipeline.addLast(new HttpRequestDecoder());
+ pipeline.addLast(new HttpObjectAggregator(65535));
+ pipeline.addLast(new VltProtocolDecoder(VltProtocol.this));
+ }
+ });
+ }
+
+}
diff --git a/src/main/java/org/traccar/protocol/VltProtocolDecoder.java b/src/main/java/org/traccar/protocol/VltProtocolDecoder.java
new file mode 100644
index 000000000..8890dece1
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/VltProtocolDecoder.java
@@ -0,0 +1,137 @@
+/*
+ * Copyright 2023 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 io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.handler.codec.http.QueryStringDecoder;
+import org.traccar.BaseHttpProtocolDecoder;
+import org.traccar.Protocol;
+import org.traccar.helper.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.model.CellTower;
+import org.traccar.model.Network;
+import org.traccar.model.Position;
+import org.traccar.session.DeviceSession;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.regex.Pattern;
+
+public class VltProtocolDecoder extends BaseHttpProtocolDecoder {
+
+ public VltProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ private static final Pattern PATTERN = new PatternBuilder()
+ .number("(dd)") // alert id
+ .expression("([HL])") // history
+ .number("([01])") // validity
+ .number("(dd)(dd)(dd)") // date (ddmmyy)
+ .number("(dd)(dd)(dd)") // time (hhmmss)
+ .number("(d{3}.d{6})([NS])") // latitude
+ .number("(d{3}.d{6})([EW])") // longitude
+ .number("(d{3})") // mcc
+ .expression("(x*[0-9]+)") // mnc
+ .number("(x{4})") // lac
+ .number("(d{9})") // cid
+ .number("(d{3}.d{2})") // speed
+ .number("(d{3}.d{2})") // course
+ .number("(d{2})") // satellites
+ .number("(d{2})") // hdop
+ .number("(d{2})") // rssi
+ .number("([01])") // ignition
+ .number("([01])") // charging
+ .expression("([HMS])") // vehicle mode
+ .compile();
+
+ private Position decodePosition(DeviceSession deviceSession, String sentence) {
+
+ Parser parser = new Parser(PATTERN, sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.set(Position.KEY_EVENT, parser.nextInt());
+ position.set(Position.KEY_ARCHIVE, parser.next().equals("H") ? true : null);
+
+ position.setValid(parser.nextInt() > 0);
+ position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS));
+ position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
+ position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
+
+ int mcc = parser.nextInt();
+ int mnc = Integer.parseInt(parser.next().replaceAll("x", ""));
+ int lac = parser.nextHexInt();
+ int cid = parser.nextInt();
+
+ position.setSpeed(parser.nextDouble());
+ position.setCourse(parser.nextDouble());
+
+ position.set(Position.KEY_SATELLITES, parser.nextInt());
+ position.set(Position.KEY_HDOP, parser.nextInt());
+
+ position.setNetwork(new Network(CellTower.from(mcc, mnc, lac, cid, parser.nextInt())));
+
+ position.set(Position.KEY_IGNITION, parser.nextInt() > 0);
+ position.set(Position.KEY_CHARGE, parser.nextInt() > 0);
+ position.set(Position.KEY_MOTION, parser.next().equals("M"));
+
+ return position;
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ FullHttpRequest request = (FullHttpRequest) msg;
+ QueryStringDecoder decoder = new QueryStringDecoder(
+ request.content().toString(StandardCharsets.US_ASCII), false);
+ String sentence = decoder.parameters().get("vltdata").iterator().next();
+
+ int index = 0;
+ String type = sentence.substring(index, index += 3);
+ String imei = sentence.substring(index, index += 15);
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+ if (deviceSession == null) {
+ sendResponse(channel, HttpResponseStatus.BAD_REQUEST);
+ return null;
+ }
+
+ sendResponse(channel, HttpResponseStatus.OK);
+
+ switch (type) {
+ case "NRM":
+ return decodePosition(deviceSession, sentence.substring(3 + 15));
+ default:
+ List<Position> positions = new LinkedList<>();
+ int count = Integer.parseInt(sentence.substring(index, index += 3));
+ for (int i = 0; i < count; i++) {
+ positions.add(decodePosition(deviceSession, sentence.substring(index, index += 78)));
+ }
+ return positions;
+ }
+ }
+
+}