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-rw-r--r--src/org/traccar/protocol/CastelProtocolDecoder.java141
1 files changed, 141 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/CastelProtocolDecoder.java b/src/org/traccar/protocol/CastelProtocolDecoder.java
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+++ b/src/org/traccar/protocol/CastelProtocolDecoder.java
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+/*
+ * Copyright 2015 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.net.SocketAddress;
+import java.nio.charset.Charset;
+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.helper.Crc;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Event;
+import org.traccar.model.Position;
+
+public class CastelProtocolDecoder extends BaseProtocolDecoder {
+
+ public CastelProtocolDecoder(String protocol) {
+ super(protocol);
+ }
+
+ private static final int MSG_LOGIN = 0x0110;
+ private static final int MSG_LOGIN_RESPONSE = 0x0190;
+ private static final int MSG_HEARTBEAT = 0x0301;
+ private static final int MSG_HEARTBEAT_RESPONSE = 0x0390;
+ private static final int MSG_GPS = 0x0140;
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, SocketAddress remoteAddress, Object msg)
+ throws Exception {
+
+ ChannelBuffer buf = (ChannelBuffer) msg;
+
+ buf.skipBytes(2); // header
+ buf.readUnsignedShort(); // length
+ int version = buf.readUnsignedByte();
+ ChannelBuffer id = buf.readBytes(20);
+ int type = buf.readUnsignedShort();
+
+ if (type == MSG_HEARTBEAT) {
+
+ if (channel != null) {
+ ChannelBuffer response = ChannelBuffers.directBuffer(31);
+ response.writeByte(0x40); response.writeByte(0x40); // header
+ response.writeShort(response.capacity()); // size
+ response.writeByte(version);
+ response.writeBytes(id);
+ response.writeShort(MSG_HEARTBEAT_RESPONSE);
+ response.writeShort(Crc.crc16Ccitt(response.toByteBuffer(2, 4))); // TODO
+ response.writeByte(0x0D); response.writeByte(0x0A); // ending
+ channel.write(response, remoteAddress);
+ }
+
+ } else if (type == MSG_LOGIN || type == MSG_GPS) {
+
+ Position position = new Position();
+ position.setDeviceId(getDeviceId());
+ position.setProtocol(getProtocol());
+
+ if (!identify(id.toString(Charset.defaultCharset()))) {
+ return null;
+ } else if (type == MSG_LOGIN) {
+
+ if (channel != null) {
+ ChannelBuffer response = ChannelBuffers.directBuffer(41);
+ response.writeByte(0x40); response.writeByte(0x40); // header
+ response.writeShort(response.capacity()); // size
+ response.writeByte(version);
+ response.writeBytes(id);
+ response.writeShort(MSG_LOGIN_RESPONSE);
+ response.writeInt(0xFFFFFFFF);
+ response.writeShort(0);
+ response.writeInt(0); // TODO
+ response.writeShort(Crc.crc16Ccitt(response.toByteBuffer(2, 4))); // TODO
+ response.writeByte(0x0D); response.writeByte(0x0A); // ending
+ channel.write(response, remoteAddress);
+ }
+
+ }
+
+ if (type == MSG_GPS) {
+ buf.readUnsignedByte(); // historical
+ }
+
+ buf.readUnsignedInt(); // ACC ON time
+ buf.readUnsignedInt(); // UTC time
+ position.set(Event.KEY_ODOMETER, buf.readUnsignedInt());
+ buf.readUnsignedInt(); // trip odometer
+ buf.readUnsignedInt(); // total fuel consumption
+ buf.readUnsignedShort(); // current fuel consumption
+ position.set(Event.KEY_STATUS, buf.readUnsignedInt());
+ buf.skipBytes(8);
+
+ buf.readUnsignedByte(); // count
+
+ // Date and time
+ Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ time.clear();
+ time.set(Calendar.DAY_OF_MONTH, buf.readUnsignedByte());
+ time.set(Calendar.MONTH, buf.readUnsignedByte() - 1);
+ time.set(Calendar.YEAR, 2000 + buf.readUnsignedByte());
+ time.set(Calendar.HOUR_OF_DAY, buf.readUnsignedByte());
+ time.set(Calendar.MINUTE, buf.readUnsignedByte());
+ time.set(Calendar.SECOND, buf.readUnsignedByte());
+ position.setTime(time.getTime());
+
+ double lat = buf.readUnsignedInt() / 3600000.0;
+ double lon = buf.readUnsignedInt() / 3600000.0;
+ position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
+ position.setCourse(buf.readUnsignedShort());
+
+ int flags = buf.readUnsignedByte();
+ position.setLatitude((flags & 0x01) == 0 ? -lat : lat);
+ position.setLongitude((flags & 0x02) == 0 ? -lon : lon);
+ position.setValid((flags & 0x0C) > 0);
+ position.set(Event.KEY_SATELLITES, flags >> 4);
+
+ return position;
+ }
+
+ return null;
+ }
+
+}