diff options
Diffstat (limited to 'src/main/java/org/traccar/protocol/GpsGateProtocolDecoder.java')
| -rw-r--r-- | src/main/java/org/traccar/protocol/GpsGateProtocolDecoder.java | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/GpsGateProtocolDecoder.java b/src/main/java/org/traccar/protocol/GpsGateProtocolDecoder.java new file mode 100644 index 000000000..cc187225b --- /dev/null +++ b/src/main/java/org/traccar/protocol/GpsGateProtocolDecoder.java @@ -0,0 +1,170 @@ +/* + * Copyright 2013 - 2018 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.channel.Channel; +import org.traccar.BaseProtocolDecoder; +import org.traccar.DeviceSession; +import org.traccar.NetworkMessage; +import org.traccar.Protocol; +import org.traccar.helper.Checksum; +import org.traccar.helper.DateBuilder; +import org.traccar.helper.Parser; +import org.traccar.helper.PatternBuilder; +import org.traccar.model.Position; + +import java.net.SocketAddress; +import java.util.regex.Pattern; + +public class GpsGateProtocolDecoder extends BaseProtocolDecoder { + + public GpsGateProtocolDecoder(Protocol protocol) { + super(protocol); + } + + private static final Pattern PATTERN_GPRMC = new PatternBuilder() + .text("$GPRMC,") + .number("(dd)(dd)(dd).?d*,") // time (hhmmss) + .expression("([AV]),") // validity + .number("(dd)(dd.d+),") // latitude + .expression("([NS]),") + .number("(ddd)(dd.d+),") // longitude + .expression("([EW]),") + .number("(d+.d+)?,") // speed + .number("(d+.d+)?,") // course + .number("(dd)(dd)(dd)") // date (ddmmyy) + .any() + .compile(); + + private static final Pattern PATTERN_FRCMD = new PatternBuilder() + .text("$FRCMD,") + .number("(d+),") // imei + .expression("[^,]*,") // command + .expression("[^,]*,") + .number("(d+)(dd.d+),") // latitude + .expression("([NS]),") + .number("(d+)(dd.d+),") // longitude + .expression("([EW]),") + .number("(d+.?d*),") // altitude + .number("(d+.?d*),") // speed + .number("(d+.?d*)?,") // course + .number("(dd)(dd)(dd),") // date (ddmmyy) + .number("(dd)(dd)(dd).?d*,") // time (hhmmss) + .expression("([01])") // validity + .any() + .compile(); + + private void send(Channel channel, SocketAddress remoteAddress, String message) { + if (channel != null) { + channel.writeAndFlush(new NetworkMessage(message + Checksum.nmea(message) + "\r\n", remoteAddress)); + } + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + String sentence = (String) msg; + + if (sentence.startsWith("$FRLIN,")) { + + int beginIndex = sentence.indexOf(',', 7); + if (beginIndex != -1) { + beginIndex += 1; + int endIndex = sentence.indexOf(',', beginIndex); + if (endIndex != -1) { + String imei = sentence.substring(beginIndex, endIndex); + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei); + if (deviceSession != null) { + if (channel != null) { + send(channel, remoteAddress, "$FRSES," + channel.id().asShortText()); + } + } else { + send(channel, remoteAddress, "$FRERR,AuthError,Unknown device"); + } + } else { + send(channel, remoteAddress, "$FRERR,AuthError,Parse error"); + } + } else { + send(channel, remoteAddress, "$FRERR,AuthError,Parse error"); + } + + } else if (sentence.startsWith("$FRVER,")) { + + send(channel, remoteAddress, "$FRVER,1,0,GpsGate Server 1.0"); + + } else if (sentence.startsWith("$GPRMC,")) { + + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); + if (deviceSession == null) { + return null; + } + + Parser parser = new Parser(PATTERN_GPRMC, sentence); + if (!parser.matches()) { + return null; + } + + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + DateBuilder dateBuilder = new DateBuilder() + .setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0)); + + position.setValid(parser.next().equals("A")); + position.setLatitude(parser.nextCoordinate()); + position.setLongitude(parser.nextCoordinate()); + position.setSpeed(parser.nextDouble(0)); + position.setCourse(parser.nextDouble(0)); + + dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0)); + position.setTime(dateBuilder.getDate()); + + return position; + + } else if (sentence.startsWith("$FRCMD,")) { + + Parser parser = new Parser(PATTERN_FRCMD, sentence); + if (!parser.matches()) { + return null; + } + + Position position = new Position(getProtocolName()); + + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); + if (deviceSession == null) { + return null; + } + position.setDeviceId(deviceSession.getDeviceId()); + + position.setLatitude(parser.nextCoordinate()); + position.setLongitude(parser.nextCoordinate()); + position.setAltitude(parser.nextDouble(0)); + position.setSpeed(parser.nextDouble(0)); + position.setCourse(parser.nextDouble(0)); + + position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS)); + + position.setValid(parser.next().equals("1")); + + return position; + + } + + return null; + } + +} |