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Diffstat (limited to 'src/main/java/org/traccar/protocol/HuaShengProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/HuaShengProtocolDecoder.java155
1 files changed, 155 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/HuaShengProtocolDecoder.java b/src/main/java/org/traccar/protocol/HuaShengProtocolDecoder.java
new file mode 100644
index 000000000..8a937a194
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/HuaShengProtocolDecoder.java
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2016 - 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.Protocol;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+
+public class HuaShengProtocolDecoder extends BaseProtocolDecoder {
+
+ public HuaShengProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ public static final int MSG_POSITION = 0xAA00;
+ public static final int MSG_POSITION_RSP = 0xFF01;
+ public static final int MSG_LOGIN = 0xAA02;
+ public static final int MSG_LOGIN_RSP = 0xFF03;
+ public static final int MSG_HSO_REQ = 0x0002;
+ public static final int MSG_HSO_RSP = 0x0003;
+
+ private void sendResponse(Channel channel, int type, int index, ByteBuf content) {
+ if (channel != null) {
+ ByteBuf response = Unpooled.buffer();
+ response.writeByte(0xC0);
+ response.writeShort(0x0100);
+ response.writeShort(12 + (content != null ? content.readableBytes() : 0));
+ response.writeShort(type);
+ response.writeShort(0);
+ response.writeInt(index);
+ if (content != null) {
+ response.writeBytes(content);
+ content.release();
+ }
+ response.writeByte(0xC0);
+ channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+ }
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ buf.skipBytes(1); // start marker
+ buf.readUnsignedByte(); // flag
+ buf.readUnsignedByte(); // reserved
+ buf.readUnsignedShort(); // length
+
+ int type = buf.readUnsignedShort();
+
+ buf.readUnsignedShort(); // checksum
+ int index = buf.readInt();
+
+ if (type == MSG_LOGIN) {
+
+ while (buf.readableBytes() > 4) {
+ int subtype = buf.readUnsignedShort();
+ int length = buf.readUnsignedShort() - 4;
+ if (subtype == 0x0003) {
+ String imei = buf.readSlice(length).toString(StandardCharsets.US_ASCII);
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+ if (deviceSession != null && channel != null) {
+ ByteBuf content = Unpooled.buffer();
+ content.writeByte(0); // success
+ sendResponse(channel, MSG_LOGIN_RSP, index, content);
+ }
+ } else {
+ buf.skipBytes(length);
+ }
+ }
+
+ } else if (type == MSG_HSO_REQ) {
+
+ sendResponse(channel, MSG_HSO_RSP, index, null);
+
+ } else if (type == MSG_POSITION) {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ int status = buf.readUnsignedShort();
+
+ position.setValid(BitUtil.check(status, 15));
+
+ position.set(Position.KEY_STATUS, status);
+ position.set(Position.KEY_IGNITION, BitUtil.check(status, 14));
+ position.set(Position.KEY_EVENT, buf.readUnsignedShort());
+
+ String time = buf.readSlice(12).toString(StandardCharsets.US_ASCII);
+
+ DateBuilder dateBuilder = new DateBuilder()
+ .setYear(Integer.parseInt(time.substring(0, 2)))
+ .setMonth(Integer.parseInt(time.substring(2, 4)))
+ .setDay(Integer.parseInt(time.substring(4, 6)))
+ .setHour(Integer.parseInt(time.substring(6, 8)))
+ .setMinute(Integer.parseInt(time.substring(8, 10)))
+ .setSecond(Integer.parseInt(time.substring(10, 12)));
+ position.setTime(dateBuilder.getDate());
+
+ position.setLongitude(buf.readInt() * 0.00001);
+ position.setLatitude(buf.readInt() * 0.00001);
+
+ position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
+ position.setCourse(buf.readUnsignedShort());
+ position.setAltitude(buf.readUnsignedShort());
+
+ position.set(Position.KEY_ODOMETER, buf.readUnsignedShort() * 1000);
+
+ while (buf.readableBytes() > 4) {
+ buf.readUnsignedShort(); // subtype
+ int length = buf.readUnsignedShort() - 4;
+ buf.skipBytes(length);
+ }
+
+ sendResponse(channel, MSG_POSITION_RSP, index, null);
+
+ return position;
+
+ }
+
+ return null;
+ }
+
+}