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authorAnton Tananaev <anton.tananaev@gmail.com>2019-03-31 22:35:39 -0700
committerAnton Tananaev <anton.tananaev@gmail.com>2019-03-31 22:35:39 -0700
commit59416923dcb3a756eaf532cc4259f2f6625c0762 (patch)
tree9082dae6616deac8fda432b7bfd80e4a52b6d9dc /src/main/java/org/traccar/protocol/BceProtocolDecoder.java
parent79a129dd6327d932133d6b9a50190d3f4927bff9 (diff)
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Convert project to gradle
Diffstat (limited to 'src/main/java/org/traccar/protocol/BceProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/BceProtocolDecoder.java175
1 files changed, 175 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/BceProtocolDecoder.java b/src/main/java/org/traccar/protocol/BceProtocolDecoder.java
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+++ b/src/main/java/org/traccar/protocol/BceProtocolDecoder.java
@@ -0,0 +1,175 @@
+/*
+ * Copyright 2015 - 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.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+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.BitUtil;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.CellTower;
+import org.traccar.model.Network;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class BceProtocolDecoder extends BaseProtocolDecoder {
+
+ public BceProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ private static final int DATA_TYPE = 7;
+
+ public static final int MSG_ASYNC_STACK = 0xA5;
+ public static final int MSG_STACK_COFIRM = 0x19;
+ public static final int MSG_TIME_TRIGGERED = 0xA0;
+ public static final int MSG_OUTPUT_CONTROL = 0x41;
+ public static final int MSG_OUTPUT_CONTROL_ACK = 0xC1;
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ String imei = String.format("%015d", buf.readLongLE());
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ List<Position> positions = new LinkedList<>();
+
+ while (buf.readableBytes() > 1) {
+
+ int dataEnd = buf.readUnsignedShortLE() + buf.readerIndex();
+ int type = buf.readUnsignedByte();
+
+ if (type != MSG_ASYNC_STACK && type != MSG_TIME_TRIGGERED) {
+ return null;
+ }
+
+ int confirmKey = buf.readUnsignedByte() & 0x7F;
+
+ while (buf.readerIndex() < dataEnd) {
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ int structEnd = buf.readUnsignedByte() + buf.readerIndex();
+
+ long time = buf.readUnsignedIntLE();
+ if ((time & 0x0f) == DATA_TYPE) {
+
+ time = time >> 4 << 1;
+ time += 0x47798280; // 01/01/2008
+ position.setTime(new Date(time * 1000));
+
+ // Read masks
+ int mask;
+ List<Integer> masks = new LinkedList<>();
+ do {
+ mask = buf.readUnsignedShortLE();
+ masks.add(mask);
+ } while (BitUtil.check(mask, 15));
+
+ mask = masks.get(0);
+
+ if (BitUtil.check(mask, 0)) {
+ position.setValid(true);
+ position.setLongitude(buf.readFloatLE());
+ position.setLatitude(buf.readFloatLE());
+ position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
+
+ int status = buf.readUnsignedByte();
+ position.set(Position.KEY_SATELLITES, BitUtil.to(status, 4));
+ position.set(Position.KEY_HDOP, BitUtil.from(status, 4));
+
+ position.setCourse(buf.readUnsignedByte() * 2);
+ position.setAltitude(buf.readUnsignedShortLE());
+
+ position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
+ }
+
+ if (BitUtil.check(mask, 1)) {
+ position.set(Position.KEY_INPUT, buf.readUnsignedShortLE());
+ }
+
+ for (int i = 1; i <= 8; i++) {
+ if (BitUtil.check(mask, i + 1)) {
+ position.set(Position.PREFIX_ADC + i, buf.readUnsignedShortLE());
+ }
+ }
+
+ if (BitUtil.check(mask, 10)) {
+ buf.skipBytes(4);
+ }
+ if (BitUtil.check(mask, 11)) {
+ buf.skipBytes(4);
+ }
+ if (BitUtil.check(mask, 12)) {
+ buf.skipBytes(2);
+ }
+ if (BitUtil.check(mask, 13)) {
+ buf.skipBytes(2);
+ }
+
+ if (BitUtil.check(mask, 14)) {
+ position.setNetwork(new Network(CellTower.from(
+ buf.readUnsignedShortLE(), buf.readUnsignedByte(),
+ buf.readUnsignedShortLE(), buf.readUnsignedShortLE(),
+ buf.readUnsignedByte())));
+ buf.readUnsignedByte();
+ }
+
+ if (BitUtil.check(mask, 0)) {
+ positions.add(position);
+ }
+ }
+
+ buf.readerIndex(structEnd);
+ }
+
+ // Send response
+ if (type == MSG_ASYNC_STACK && channel != null) {
+ ByteBuf response = Unpooled.buffer(8 + 2 + 2 + 1);
+ response.writeLongLE(Long.parseLong(imei));
+ response.writeShortLE(2);
+ response.writeByte(MSG_STACK_COFIRM);
+ response.writeByte(confirmKey);
+
+ int checksum = 0;
+ for (int i = 0; i < response.writerIndex(); i++) {
+ checksum += response.getUnsignedByte(i);
+ }
+ response.writeByte(checksum);
+
+ channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+ }
+ }
+
+ return positions;
+ }
+
+}