Support Nyitech NT-183W protocol

4 files changed, 191 insertions, 0 deletions

diff --git a/setup/default.xml b/setup/default.xml
index 0d515001d..447380c32 100644
--- a/setup/default.xml
+++ b/setup/default.xml
@@ -257,5 +257,6 @@
     <entry key='its.port'>5179</entry>
     <entry key='xrb28.port'>5180</entry>
     <entry key='c2stek.port'>5181</entry>
+    <entry key='nyitech.port'>5182</entry>
 
 </properties>
diff --git a/src/org/traccar/protocol/NyitechProtocol.java b/src/org/traccar/protocol/NyitechProtocol.java
new file mode 100644
index 000000000..58974be5c
--- /dev/null
+++ b/src/org/traccar/protocol/NyitechProtocol.java
@@ -0,0 +1,37 @@
+/*
+ * 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.handler.codec.LengthFieldBasedFrameDecoder;
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+
+import java.nio.ByteOrder;
+
+public class NyitechProtocol extends BaseProtocol {
+
+    public NyitechProtocol() {
+        addServer(new TrackerServer(false, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new LengthFieldBasedFrameDecoder(ByteOrder.LITTLE_ENDIAN, 1024, 2, 2, -4, 0, true));
+                pipeline.addLast(new NyitechProtocolDecoder(NyitechProtocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/org/traccar/protocol/NyitechProtocolDecoder.java b/src/org/traccar/protocol/NyitechProtocolDecoder.java
new file mode 100644
index 000000000..e145205f7
--- /dev/null
+++ b/src/org/traccar/protocol/NyitechProtocolDecoder.java
@@ -0,0 +1,123 @@
+/*
+ * 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.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+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 NyitechProtocolDecoder extends BaseProtocolDecoder {
+
+    public NyitechProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final short MSG_LOGIN = 0x1001;
+    public static final short MSG_COMPREHENSIVE_LIVE = 0x2001;
+    public static final short MSG_COMPREHENSIVE_HISTORY = 0x2002;
+    public static final short MSG_ALARM = 0x2003;
+    public static final short MSG_FIXED = 0x2004;
+
+    private void decodeLocation(Position position, ByteBuf buf) {
+
+        DateBuilder dateBuilder = new DateBuilder()
+                .setDateReverse(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
+                .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
+        position.setTime(dateBuilder.getDate());
+
+        int flags = buf.readUnsignedByte();
+        position.setValid(BitUtil.to(flags, 2) > 0);
+
+        double lat = buf.readUnsignedIntLE() / 3600000.0;
+        double lon = buf.readUnsignedIntLE() / 3600000.0;
+
+        position.setLatitude(BitUtil.check(flags, 2) ? lat : -lat);
+        position.setLongitude(BitUtil.check(flags, 3) ? lon : -lon);
+
+        position.setSpeed(UnitsConverter.knotsFromCps(buf.readUnsignedShortLE()));
+        position.setCourse(buf.readUnsignedShortLE() * 0.1);
+        position.setAltitude(buf.readShortLE() * 0.1);
+    }
+
+    private String decodeAlarm(int type) {
+        switch (type) {
+            case 0x09:
+                return Position.ALARM_ACCELERATION;
+            case 0x0a:
+                return Position.ALARM_BRAKING;
+            case 0x0b:
+                return Position.ALARM_CORNERING;
+            case 0x0e:
+                return Position.ALARM_SOS;
+            default:
+                return null;
+        }
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        buf.skipBytes(2); // header
+        buf.readUnsignedShortLE(); // length
+
+        String id = buf.readCharSequence(12, StandardCharsets.US_ASCII).toString();
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        int type = buf.readUnsignedShortLE();
+
+        if (type != MSG_LOGIN && type != MSG_COMPREHENSIVE_LIVE
+                && type != MSG_COMPREHENSIVE_HISTORY && type != MSG_ALARM && type != MSG_FIXED) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        if (type == MSG_COMPREHENSIVE_LIVE || type == MSG_COMPREHENSIVE_HISTORY) {
+            buf.skipBytes(6); // time
+            buf.skipBytes(3); // data
+        } else if (type == MSG_ALARM) {
+            buf.readUnsignedShortLE(); // random number
+            buf.readUnsignedByte(); // tag
+            position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
+            buf.readUnsignedShortLE(); // threshold
+            buf.readUnsignedShortLE(); // value
+            buf.skipBytes(6); // time
+        } else if (type == MSG_FIXED) {
+            buf.skipBytes(6); // time
+        }
+
+        decodeLocation(position, buf);
+
+        return position;
+    }
+
+}
diff --git a/test/org/traccar/protocol/NyitechProtocolDecoderTest.java b/test/org/traccar/protocol/NyitechProtocolDecoderTest.java
new file mode 100644
index 000000000..4cafd7612
--- /dev/null
+++ b/test/org/traccar/protocol/NyitechProtocolDecoderTest.java
@@ -0,0 +1,30 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class NyitechProtocolDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        NyitechProtocolDecoder decoder = new NyitechProtocolDecoder(null);
+
+        verifyPosition(decoder, binary(
+                "4040690030313436383230303238373201201c0c12031a308080801c0c12031a3007d67e7e08aceb841002000000ae08000000000000000000000000001e002900f0ffdd002700f2ffe0002700f2ffe1002400f0ffdf002400f3ffe3008a00ffff01010000a9c70d0a"));
+
+        verifyPosition(decoder, binary(
+                "4040390030313436383230303238373203200100010c000000001c0c1203192a1b0c12171d3104fed87d089288801000000000000011ec0d0a"));
+
+        verifyPosition(decoder, binary(
+                "4040480030313436383230303238373201101c0c12031a2907fa7e7e08b8eb841002000000bc080101040904040300010100000a818283848586878862611c0c12031a293f9c0d0a"));
+
+        verifyPosition(decoder, binary(
+                "40404b003247512d313630313030313901101e0b100604190c02c83707f887ac0f000000002d130101030304020000010100000d426162636465666768696a6ba51e0b1006041965c30d0a"));
+
+        verifyPosition(decoder, binary(
+                "4040490030313436383230303238373202201c0c120319348080001b0c12171d3104fed87d0892888010000000000000000000000000000000000000008b00ffff010100008a480d0a"));
+
+    }
+
+}