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-rw-r--r--src/org/traccar/ServerManager.java13
-rw-r--r--src/org/traccar/helper/ChannelBufferTools.java22
-rw-r--r--src/org/traccar/helper/Crc.java8
-rw-r--r--src/org/traccar/protocol/GatorProtocolDecoder.java22
-rw-r--r--src/org/traccar/protocol/KhdProtocolDecoder.java152
5 files changed, 197 insertions, 20 deletions
diff --git a/src/org/traccar/ServerManager.java b/src/org/traccar/ServerManager.java
index cd8a670ce..8e2465a2b 100644
--- a/src/org/traccar/ServerManager.java
+++ b/src/org/traccar/ServerManager.java
@@ -159,6 +159,7 @@ public class ServerManager {
initOsmAndServer("osmand");
initEasyTrackServer("easytrack");
initTaipServer("taip");
+ initKhdServer("khd");
// Initialize web server
if (Boolean.valueOf(properties.getProperty("http.enable"))) {
@@ -1031,4 +1032,16 @@ public class ServerManager {
}
}
+ private void initKhdServer(String protocol) throws SQLException {
+ if (isProtocolEnabled(properties, protocol)) {
+ serverList.add(new TrackerServer(this, new ServerBootstrap(), protocol) {
+ @Override
+ protected void addSpecificHandlers(ChannelPipeline pipeline) {
+ pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(256, 3, 2));
+ pipeline.addLast("objectDecoder", new KhdProtocolDecoder(ServerManager.this));
+ }
+ });
+ }
+ }
+
}
diff --git a/src/org/traccar/helper/ChannelBufferTools.java b/src/org/traccar/helper/ChannelBufferTools.java
index c0df86bcd..ef2ebc313 100644
--- a/src/org/traccar/helper/ChannelBufferTools.java
+++ b/src/org/traccar/helper/ChannelBufferTools.java
@@ -97,6 +97,28 @@ public class ChannelBufferTools {
return result.toString();
}
+
+ /**
+ * Read BCD coded coordinate (first byte has sign bit)
+ */
+ public static double readCoordinate(ChannelBuffer buf) {
+ int b1 = buf.readUnsignedByte();
+ int b2 = buf.readUnsignedByte();
+ int b3 = buf.readUnsignedByte();
+ int b4 = buf.readUnsignedByte();
+
+ double value = (b2 & 0xf) * 10 + (b3 >> 4);
+ value += (((b3 & 0xf) * 10 + (b4 >> 4)) * 10 + (b4 & 0xf)) / 1000.0;
+ value /= 60;
+ value += ((b1 >> 4 & 0x7) * 10 + (b1 & 0xf)) * 10 + (b2 >> 4);
+
+ if ((b1 & 0x80) != 0) {
+ value = -value;
+ }
+
+ return value;
+ }
+
/**
* Convert integer array to byte array
diff --git a/src/org/traccar/helper/Crc.java b/src/org/traccar/helper/Crc.java
index 84224a781..5a668f30a 100644
--- a/src/org/traccar/helper/Crc.java
+++ b/src/org/traccar/helper/Crc.java
@@ -136,6 +136,14 @@ public class Crc {
}
return (int) checksum.getValue();
}
+
+ public static int xorChecksum(ByteBuffer buf) {
+ int checksum = 0;
+ for (int i = 0; i < buf.remaining(); i++) {
+ checksum ^= buf.get(i);
+ }
+ return checksum;
+ }
public static String nmeaChecksum(String msg) {
int checksum = 0;
diff --git a/src/org/traccar/protocol/GatorProtocolDecoder.java b/src/org/traccar/protocol/GatorProtocolDecoder.java
index 041e44588..b2baf455a 100644
--- a/src/org/traccar/protocol/GatorProtocolDecoder.java
+++ b/src/org/traccar/protocol/GatorProtocolDecoder.java
@@ -45,24 +45,6 @@ public class GatorProtocolDecoder extends BaseProtocolDecoder {
private static final int PACKET_CAMERA_RESPONSE = 0x56;
private static final int PACKET_PICTURE_DATA = 0x57;
- private double readCoordinate(ChannelBuffer buf) {
- int b1 = buf.readUnsignedByte();
- int b2 = buf.readUnsignedByte();
- int b3 = buf.readUnsignedByte();
- int b4 = buf.readUnsignedByte();
-
- double value = (b2 & 0xf) * 10 + (b3 >> 4);
- value += (((b3 & 0xf) * 10 + (b4 >> 4)) * 10 + (b4 & 0xf)) / 1000.0;
- value /= 60;
- value += ((b1 >> 4 & 0x7) * 10 + (b1 & 0xf)) * 10 + (b2 >> 4);
-
- if ((b1 & 0x80) != 0) {
- value = -value;
- }
-
- return value;
- }
-
@Override
protected Object decode(
ChannelHandlerContext ctx, Channel channel, Object msg)
@@ -105,8 +87,8 @@ public class GatorProtocolDecoder extends BaseProtocolDecoder {
position.setTime(time.getTime());
// Location
- position.setLatitude(readCoordinate(buf));
- position.setLongitude(readCoordinate(buf));
+ position.setLatitude(ChannelBufferTools.readCoordinate(buf));
+ position.setLongitude(ChannelBufferTools.readCoordinate(buf));
position.setSpeed(ChannelBufferTools.readHexInteger(buf, 4) * 0.539957);
position.setCourse((double) ChannelBufferTools.readHexInteger(buf, 4));
position.setAltitude(0.0);
diff --git a/src/org/traccar/protocol/KhdProtocolDecoder.java b/src/org/traccar/protocol/KhdProtocolDecoder.java
new file mode 100644
index 000000000..04317c442
--- /dev/null
+++ b/src/org/traccar/protocol/KhdProtocolDecoder.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright 2014 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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 java.util.Calendar;
+import java.util.TimeZone;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.ServerManager;
+import org.traccar.helper.ChannelBufferTools;
+import org.traccar.helper.Crc;
+import org.traccar.helper.Log;
+import org.traccar.model.ExtendedInfoFormatter;
+import org.traccar.model.Position;
+
+public class KhdProtocolDecoder extends BaseProtocolDecoder {
+
+ public KhdProtocolDecoder(ServerManager serverManager) {
+ super(serverManager);
+ }
+
+ private String readSerialNumber(ChannelBuffer buf) {
+ int b1 = buf.readUnsignedByte();
+ int b2 = buf.readUnsignedByte(); if (b2 > 0x80) b2 -= 0x80;
+ int b3 = buf.readUnsignedByte(); if (b3 > 0x80) b3 -= 0x80;
+ int b4 = buf.readUnsignedByte();
+ String serialNumber = String.format("%02d%02d%02d%02d", b1, b2, b3, b4);
+ return String.valueOf(Integer.valueOf(serialNumber));
+ }
+
+ private static final int MSG_LOGIN = 0xB1;
+ private static final int MSG_CONFIRMATION = 0x21;
+ private static final int MSG_ON_DEMAND = 0x81;
+ private static final int MSG_POSITION_UPLOAD = 0x80;
+ private static final int MSG_POSITION_REUPLOAD = 0x8E;
+ private static final int MSG_ALARM = 0x82;
+ private static final int MSG_REPLY = 0x85;
+ private static final int MSG_PERIPHERAL = 0xA3;
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg)
+ throws Exception {
+
+ ChannelBuffer buf = (ChannelBuffer) msg;
+
+ buf.skipBytes(2); // header
+ int type = buf.readUnsignedByte();
+ buf.readUnsignedShort(); // size
+
+ if (type == MSG_ON_DEMAND ||
+ type == MSG_POSITION_UPLOAD ||
+ type == MSG_POSITION_REUPLOAD ||
+ type == MSG_ALARM ||
+ type == MSG_REPLY ||
+ type == MSG_PERIPHERAL) {
+
+ // Create new position
+ Position position = new Position();
+ ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("khd");
+
+ // Device identification
+ String id = readSerialNumber(buf);
+ try {
+ position.setDeviceId(getDataManager().getDeviceByImei(id).getId());
+ } catch(Exception error) {
+ Log.warning("Unknown device - " + id);
+ }
+
+ // Date and time
+ Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ time.clear();
+ time.set(Calendar.YEAR, 2000 + ChannelBufferTools.readHexInteger(buf, 2));
+ time.set(Calendar.MONTH, ChannelBufferTools.readHexInteger(buf, 2) - 1);
+ time.set(Calendar.DAY_OF_MONTH, ChannelBufferTools.readHexInteger(buf, 2));
+ time.set(Calendar.HOUR, ChannelBufferTools.readHexInteger(buf, 2));
+ time.set(Calendar.MINUTE, ChannelBufferTools.readHexInteger(buf, 2));
+ time.set(Calendar.SECOND, ChannelBufferTools.readHexInteger(buf, 2));
+ position.setTime(time.getTime());
+
+ // Location
+ position.setLatitude(ChannelBufferTools.readCoordinate(buf));
+ position.setLongitude(ChannelBufferTools.readCoordinate(buf));
+ position.setSpeed(ChannelBufferTools.readHexInteger(buf, 4) * 0.539957);
+ position.setCourse((double) ChannelBufferTools.readHexInteger(buf, 4));
+ position.setAltitude(0.0);
+
+ // Flags
+ int flags = buf.readUnsignedByte();
+ position.setValid((flags & 0x80) != 0);
+
+ if (type == MSG_ALARM) {
+
+ buf.skipBytes(2);
+
+ } else {
+
+ // Milage
+ extendedInfo.set("milage", buf.readUnsignedMedium());
+
+ // Status
+ buf.skipBytes(4);
+
+ // Other
+ buf.skipBytes(8);
+
+ }
+
+ // TODO: parse extra data
+
+ position.setExtendedInfo(extendedInfo.toString());
+ return position;
+ }
+
+ else if (type == MSG_LOGIN && channel != null) {
+
+ buf.skipBytes(4); // serial number
+ buf.readByte(); // reserved
+
+ ChannelBuffer response = ChannelBuffers.directBuffer(10);
+ response.writeByte(0x29); response.writeByte(0x29); // header
+ response.writeByte(MSG_CONFIRMATION);
+ response.writeShort(5); // size
+ response.writeByte(buf.readUnsignedByte());
+ response.writeByte(type);
+ response.writeByte(0); // reserved
+ response.writeByte(Crc.xorChecksum(response.toByteBuffer(0, 8)));
+ response.writeByte(0x0D); // ending
+ channel.write(response);
+
+ }
+
+ return null;
+ }
+
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 23:53:06 +0000