diff options
Diffstat (limited to 'src/org/traccar/protocol')
| -rw-r--r-- | src/org/traccar/protocol/CastelProtocolDecoder.java | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/CastelProtocolDecoder.java b/src/org/traccar/protocol/CastelProtocolDecoder.java new file mode 100644 index 000000000..071218bf8 --- /dev/null +++ b/src/org/traccar/protocol/CastelProtocolDecoder.java @@ -0,0 +1,141 @@ +/* + * 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; + } + +} |