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authorAnton Tananaev <anton.tananaev@gmail.com>2019-04-06 21:32:12 -0700
committerAnton Tananaev <anton.tananaev@gmail.com>2019-04-06 21:32:12 -0700
commite6b0e38e6d250253b62c41dac3f01a9309a8de7f (patch)
tree4d5d43aea056c97b1d38153f8ad5fc85b0e8a42b /src/main
parent70fe57f3f5e3b0a10912e00b542fab07a4a8dfc7 (diff)
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Implement Globalstar protocol
Diffstat (limited to 'src/main')
-rw-r--r--src/main/java/org/traccar/protocol/GlobalstarProtocol.java39
-rw-r--r--src/main/java/org/traccar/protocol/GlobalstarProtocolDecoder.java119
2 files changed, 158 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/GlobalstarProtocol.java b/src/main/java/org/traccar/protocol/GlobalstarProtocol.java
new file mode 100644
index 000000000..84cd5565b
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/GlobalstarProtocol.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2019 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.handler.codec.http.HttpObjectAggregator;
+import io.netty.handler.codec.http.HttpRequestDecoder;
+import io.netty.handler.codec.http.HttpResponseEncoder;
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+
+public class GlobalstarProtocol extends BaseProtocol {
+
+ public GlobalstarProtocol() {
+ addServer(new TrackerServer(false, getName()) {
+ @Override
+ protected void addProtocolHandlers(PipelineBuilder pipeline) {
+ pipeline.addLast(new HttpResponseEncoder());
+ pipeline.addLast(new HttpRequestDecoder());
+ pipeline.addLast(new HttpObjectAggregator(65535));
+ pipeline.addLast(new GlobalstarProtocolDecoder(GlobalstarProtocol.this));
+ }
+ });
+ }
+
+}
diff --git a/src/main/java/org/traccar/protocol/GlobalstarProtocolDecoder.java b/src/main/java/org/traccar/protocol/GlobalstarProtocolDecoder.java
new file mode 100644
index 000000000..ab9e5dccf
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/GlobalstarProtocolDecoder.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2019 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 com.fasterxml.jackson.databind.util.ByteBufferBackedInputStream;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import org.traccar.BaseHttpProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+import org.traccar.helper.DataConverter;
+import org.traccar.model.Position;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.xpath.XPath;
+import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathExpression;
+import javax.xml.xpath.XPathExpressionException;
+import javax.xml.xpath.XPathFactory;
+import java.net.SocketAddress;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class GlobalstarProtocolDecoder extends BaseHttpProtocolDecoder {
+
+ private DocumentBuilder documentBuilder;
+ private XPath xPath;
+ private XPathExpression messageExpression;
+
+ public GlobalstarProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ try {
+ DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
+ builderFactory.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
+ builderFactory.setFeature("http://xml.org/sax/features/external-general-entities", false);
+ builderFactory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
+ builderFactory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
+ builderFactory.setXIncludeAware(false);
+ builderFactory.setExpandEntityReferences(false);
+ documentBuilder = builderFactory.newDocumentBuilder();
+ xPath = XPathFactory.newInstance().newXPath();
+ messageExpression = xPath.compile("//stuMessages/stuMessage");
+ } catch (ParserConfigurationException | XPathExpressionException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ FullHttpRequest request = (FullHttpRequest) msg;
+
+ Document document = documentBuilder.parse(new ByteBufferBackedInputStream(request.content().nioBuffer()));
+ NodeList nodes = (NodeList) messageExpression.evaluate(document, XPathConstants.NODESET);
+
+ List<Position> positions = new LinkedList<>();
+
+ for (int i = 0; i < nodes.getLength(); i++) {
+ Node node = nodes.item(i);
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, xPath.evaluate("esn", node));
+ if (deviceSession != null) {
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.setValid(true);
+ position.setTime(new Date(Long.parseLong(xPath.evaluate("unixTime", node)) * 1000));
+
+ ByteBuf buf = Unpooled.wrappedBuffer(
+ DataConverter.parseHex(xPath.evaluate("payload", node).substring(2)));
+
+ buf.readUnsignedByte(); // flags
+
+ position.setLatitude(buf.readUnsignedMedium() * 90.0 / (1 << 23));
+ if (position.getLatitude() > 90) {
+ position.setLatitude(position.getLatitude() - 180);
+ }
+
+ position.setLongitude(buf.readUnsignedMedium() * 90.0 / (1 << 23));
+ if (position.getLongitude() > 180) {
+ position.setLongitude(position.getLongitude() - 360);
+ }
+
+ buf.readUnsignedByte(); // status
+ buf.readUnsignedByte(); // status
+
+ positions.add(position);
+
+ }
+ }
+
+ sendResponse(channel, HttpResponseStatus.OK);
+ return positions;
+ }
+
+}