/* * 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.nio.ByteOrder; import java.nio.charset.Charset; import java.net.SocketAddress; import java.util.Calendar; import java.util.LinkedList; import java.util.List; 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.handler.codec.http.DefaultHttpResponse; import org.jboss.netty.handler.codec.http.HttpRequest; import org.jboss.netty.handler.codec.http.HttpResponse; import org.jboss.netty.handler.codec.http.HttpResponseStatus; import org.jboss.netty.handler.codec.http.HttpVersion; import org.jboss.netty.handler.codec.http.QueryStringDecoder; import org.traccar.BaseProtocolDecoder; import org.traccar.model.Event; import org.traccar.model.Position; public class PiligrimProtocolDecoder extends BaseProtocolDecoder { public PiligrimProtocolDecoder(PiligrimProtocol protocol) { super(protocol); } private void sendResponse(Channel channel, String message) { if (channel != null) { HttpResponse response = new DefaultHttpResponse( HttpVersion.HTTP_1_1, HttpResponseStatus.OK); response.setContent(ChannelBuffers.copiedBuffer( ByteOrder.BIG_ENDIAN, message, Charset.defaultCharset())); channel.write(response); } } private static final int MSG_GPS = 0xF1; private static final int MSG_GPS_SENSORS = 0xF2; private static final int MSG_EVENTS = 0xF3; @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { HttpRequest request = (HttpRequest) msg; String uri = request.getUri(); if (uri.startsWith("/config")) { sendResponse(channel, "CONFIG: OK"); } else if (uri.startsWith("/addlog")) { sendResponse(channel, "ADDLOG: OK"); } else if (uri.startsWith("/inform")) { sendResponse(channel, "INFORM: OK"); } else if (uri.startsWith("/bingps")) { sendResponse(channel, "BINGPS: OK"); // Identification QueryStringDecoder decoder = new QueryStringDecoder(request.getUri()); if (!identify(decoder.getParameters().get("imei").get(0), channel)) { return null; } List<Position> positions = new LinkedList<>(); ChannelBuffer buf = request.getContent(); while (buf.readableBytes() > 2) { buf.readUnsignedByte(); // header int type = buf.readUnsignedByte(); buf.readUnsignedByte(); // length if (type == MSG_GPS || type == MSG_GPS_SENSORS) { Position position = new Position(); position.setProtocol(getProtocolName()); position.setDeviceId(getDeviceId()); // Time Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC")); time.clear(); time.set(Calendar.DAY_OF_MONTH, buf.readUnsignedByte()); time.set(Calendar.MONTH, (buf.getByte(buf.readerIndex()) & 0x0f) - 1); time.set(Calendar.YEAR, 2010 + (buf.readUnsignedByte() >> 4)); time.set(Calendar.HOUR_OF_DAY, buf.readUnsignedByte()); time.set(Calendar.MINUTE, buf.readUnsignedByte()); time.set(Calendar.SECOND, buf.readUnsignedByte()); position.setTime(time.getTime()); // Latitude double latitude = buf.readUnsignedByte(); latitude += buf.readUnsignedByte() / 60.0; latitude += buf.readUnsignedByte() / 6000.0; latitude += buf.readUnsignedByte() / 600000.0; // Longitude double longitude = buf.readUnsignedByte(); longitude += buf.readUnsignedByte() / 60.0; longitude += buf.readUnsignedByte() / 6000.0; longitude += buf.readUnsignedByte() / 600000.0; // Hemisphere int flags = buf.readUnsignedByte(); if ((flags & 0x01) != 0) latitude = -latitude; if ((flags & 0x02) != 0) longitude = -longitude; position.setLatitude(latitude); position.setLongitude(longitude); // Satellites int satellites = buf.readUnsignedByte(); position.set(Event.KEY_SATELLITES, satellites); position.setValid(satellites >= 3); // Speed position.setSpeed(buf.readUnsignedByte()); // Course double course = buf.readUnsignedByte() << 1; course += (flags >> 2) & 1; course += buf.readUnsignedByte() / 100.0; position.setCourse(course); // Sensors if (type == MSG_GPS_SENSORS) { // External power double power = buf.readUnsignedByte(); power += buf.readUnsignedByte() << 8; position.set(Event.KEY_POWER, power / 100); // Battery double battery = buf.readUnsignedByte(); battery += buf.readUnsignedByte() << 8; position.set(Event.KEY_BATTERY, battery / 100); buf.skipBytes(6); } positions.add(position); } else if (type == MSG_EVENTS) { buf.skipBytes(13); } } return positions; } return null; } }