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authorAnton Tananaev <anton.tananaev@gmail.com>2019-08-03 23:16:11 -0700
committerAnton Tananaev <anton.tananaev@gmail.com>2019-08-03 23:16:11 -0700
commitb5e9d84cfeb8d4e6a4e1133a2e0510652be1de6b (patch)
tree36f14a8a052163f2e1b0a770c65204ebc938eff0 /src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java
parent10da32b83608a882744212373e3ff4ff2716aadf (diff)
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Implement Naviset protocol
Diffstat (limited to 'src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java94
1 files changed, 94 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java b/src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java
new file mode 100644
index 000000000..36a060176
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+++ b/src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2019 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.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.Date;
+
+public class NavisetProtocolDecoder extends BaseProtocolDecoder {
+
+ public NavisetProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ public static final int MSG_HEADER = 0b00;
+ public static final int MSG_DATA = 0b01;
+ public static final int MSG_RESPONSE = 0b10;
+ public static final int MSG_RESERVE = 0b11;
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ if (channel != null) {
+ ByteBuf response = Unpooled.buffer();
+ response.writeByte(0x01);
+ response.writeShortLE(buf.getUnsignedShortLE(buf.writerIndex() - 2));
+ channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+ }
+
+ int length = buf.readUnsignedShortLE();
+ BitUtil.between(length, 12, 14); // version
+ int type = BitUtil.between(length, 14, 16);
+ buf.readUnsignedShortLE(); // device number
+
+ if (type == MSG_HEADER) {
+
+ getDeviceSession(channel, remoteAddress, buf.readCharSequence(15, StandardCharsets.US_ASCII).toString());
+
+ } else if (type == MSG_DATA) {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ buf.readUnsignedByte(); // mask
+ position.set(Position.KEY_INDEX, buf.readUnsignedShortLE());
+ position.set(Position.KEY_STATUS, buf.readUnsignedByte());
+
+ position.setValid(true);
+ position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
+ position.setLatitude(buf.readUnsignedIntLE() * 0.000001);
+ position.setLongitude(buf.readUnsignedIntLE() * 0.000001);
+ position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE() * 0.1));
+
+ // additional data
+
+ return position;
+ }
+
+ return null;
+ }
+
+}