aboutsummaryrefslogtreecommitdiff
path: root/src/org/traccar/protocol/TlvProtocolDecoder.java
diff options
context:
space:
mode:
Diffstat (limited to 'src/org/traccar/protocol/TlvProtocolDecoder.java')
-rw-r--r--src/org/traccar/protocol/TlvProtocolDecoder.java109
1 files changed, 109 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/TlvProtocolDecoder.java b/src/org/traccar/protocol/TlvProtocolDecoder.java
new file mode 100644
index 000000000..41d65be09
--- /dev/null
+++ b/src/org/traccar/protocol/TlvProtocolDecoder.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2017 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 org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.jboss.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.Date;
+
+public class TlvProtocolDecoder extends BaseProtocolDecoder {
+
+ public TlvProtocolDecoder(TlvProtocol protocol) {
+ super(protocol);
+ }
+
+ private void sendResponse(Channel channel, String type, String... arguments) {
+ if (channel != null) {
+ ChannelBuffer response = ChannelBuffers.dynamicBuffer();
+ response.writeBytes(ChannelBuffers.copiedBuffer(type, StandardCharsets.US_ASCII));
+ for (String argument : arguments) {
+ response.writeByte(argument.length());
+ response.writeBytes(ChannelBuffers.copiedBuffer(argument, StandardCharsets.US_ASCII));
+ }
+ response.writeByte(0);
+ channel.write(response);
+ }
+ }
+
+ private String readArgument(ChannelBuffer buf) {
+ return buf.readBytes(buf.readUnsignedByte()).toString(StandardCharsets.US_ASCII);
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ChannelBuffer buf = (ChannelBuffer) msg;
+
+ String type = buf.readBytes(2).toString(StandardCharsets.US_ASCII);
+
+ if (channel != null) {
+ switch (type) {
+ case "0A":
+ case "0C":
+ sendResponse(channel, type);
+ break;
+ case "0B":
+ sendResponse(channel, type, "1482202689", "10", "20", "15");
+ break;
+ case "0E":
+ case "0F":
+ sendResponse(channel, type, "30", "Unknown");
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (type.equals("0E")) {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, readArgument(buf));
+ if (deviceSession == null) {
+ return null;
+ }
+
+ Position position = new Position();
+ position.setProtocol(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.setValid(true);
+ position.setTime(new Date(Long.parseLong(readArgument(buf)) * 1000));
+
+ readArgument(buf); // location identifier
+
+ position.setLongitude(Double.parseDouble(readArgument(buf)));
+ position.setLatitude(Double.parseDouble(readArgument(buf)));
+ position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(readArgument(buf))));
+ position.setCourse(Double.parseDouble(readArgument(buf)));
+
+ position.set(Position.KEY_SATELLITES, Integer.parseInt(readArgument(buf)));
+
+ return position;
+
+ }
+
+ return null;
+ }
+
+}