aboutsummaryrefslogtreecommitdiff
path: root/src/org/traccar/protocol/xexun
diff options
context:
space:
mode:
Diffstat (limited to 'src/org/traccar/protocol/xexun')
-rw-r--r--src/org/traccar/protocol/xexun/XexunFrameDecoder.java92
-rw-r--r--src/org/traccar/protocol/xexun/XexunProtocolDecoder.java175
2 files changed, 267 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/xexun/XexunFrameDecoder.java b/src/org/traccar/protocol/xexun/XexunFrameDecoder.java
new file mode 100644
index 000000000..839e5b3ec
--- /dev/null
+++ b/src/org/traccar/protocol/xexun/XexunFrameDecoder.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.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 net.sourceforge.opentracking.protocol.xexun;
+
+import org.jboss.netty.handler.codec.frame.FrameDecoder;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.buffer.ChannelBuffer;
+
+public class XexunFrameDecoder extends FrameDecoder {
+
+ /**
+ * Find string in network buffer
+ */
+ private static Integer find(
+ ChannelBuffer buf,
+ Integer start,
+ Integer length,
+ String subString) {
+
+ int index = start;
+ boolean match;
+
+ for (; index < length; index++) {
+ match = true;
+
+ for (int i = 0; i < subString.length(); i++) {
+ char c = (char) buf.getByte(index + i);
+ if (c != subString.charAt(i)) {
+ match = false;
+ break;
+ }
+ }
+
+ if (match) {
+ return index;
+ }
+ }
+
+ return null;
+ }
+
+ protected Object decode(
+ ChannelHandlerContext ctx,
+ Channel channel,
+ ChannelBuffer buf) throws Exception {
+
+ // Check minimum length
+ int length = buf.readableBytes();
+ if (length < 100) {
+ return null;
+ }
+
+ // Find start
+ Integer beginIndex = find(buf, 0, length, "GPRMC");
+ if (beginIndex == null) {
+ return null;
+ }
+
+ // Find identifier
+ Integer idIndex = find(buf, beginIndex, length, "imei:");
+ if (idIndex == null) {
+ return null;
+ }
+
+ // Find end
+ Integer endIndex = find(buf, idIndex, length, ",");
+ if (endIndex == null) {
+ return null;
+ }
+
+ // Read buffer
+ buf.skipBytes(beginIndex);
+ ChannelBuffer frame = buf.readBytes(endIndex - beginIndex + 1);
+
+ return frame;
+ }
+
+}
diff --git a/src/org/traccar/protocol/xexun/XexunProtocolDecoder.java b/src/org/traccar/protocol/xexun/XexunProtocolDecoder.java
new file mode 100644
index 000000000..872569e1a
--- /dev/null
+++ b/src/org/traccar/protocol/xexun/XexunProtocolDecoder.java
@@ -0,0 +1,175 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.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 net.sourceforge.opentracking.protocol.xexun;
+
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+import java.text.ParseException;
+import java.util.TimeZone;
+import java.util.Timer;
+import java.util.TimerTask;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.handler.codec.oneone.OneToOneDecoder;
+import net.sourceforge.opentracking.Position;
+import net.sourceforge.opentracking.DataManager;
+import org.jboss.netty.channel.ChannelEvent;
+import org.jboss.netty.channel.ChannelState;
+import org.jboss.netty.channel.ChannelStateEvent;
+
+/**
+ * Xexun tracker protocol decoder
+ */
+public class XexunProtocolDecoder extends OneToOneDecoder {
+
+ /**
+ * Data manager
+ */
+ private DataManager dataManager;
+
+ /**
+ * Reset connection delay
+ */
+ private Integer resetDelay;
+
+ /**
+ * Init device table
+ */
+ public XexunProtocolDecoder(DataManager dataManager, Integer resetDelay) {
+ this.dataManager = dataManager;
+ this.resetDelay = resetDelay;
+ }
+
+ /**
+ * Regular expressions pattern
+ */
+ static private Pattern pattern = Pattern.compile(
+ "GPRMC," +
+ "([\\d]{2})([\\d]{2})([\\d]{2}).([\\d]{3})," + // Time (HHMMSS.SSS)
+ "([AV])," + // Validity
+ "([\\d]{2})([\\d]{2}.[\\d]{4})," + // Latitude (DDMM.MMMM)
+ "([NS])," +
+ "([\\d]{3})([\\d]{2}.[\\d]{4})," + // Longitude (DDDMM.MMMM)
+ "([EW])," +
+ "([\\d]+.[\\d]+)," + // Speed
+ "([\\d]+.[\\d]+)?," + // Course
+ "([\\d]{2})([\\d]{2})([\\d]{2})," + // Date (DDMMYY)
+ ".*imei:" +
+ "([\\d]+),"); // IMEI
+
+ /**
+ * Decode message
+ */
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg)
+ throws Exception {
+
+ // Parse message
+ String sentence = (String) msg;
+ Matcher parser = pattern.matcher(sentence);
+ if (!parser.matches()) {
+ throw new ParseException(null, 0);
+ }
+
+ // Create new position
+ Position position = new Position();
+
+ Integer index = 1;
+
+ // Time
+ Calendar time = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
+ time.clear();
+ time.set(Calendar.HOUR, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.MILLISECOND, Integer.valueOf(parser.group(index++)));
+
+ // Validity
+ position.setValid(parser.group(index++).compareTo("A") == 0 ? true : false);
+
+ // Latitude
+ Double latitude = Double.valueOf(parser.group(index++));
+ latitude += Double.valueOf(parser.group(index++)) / 60;
+ if (parser.group(index++).compareTo("S") == 0) latitude = -latitude;
+ position.setLatitude(latitude);
+
+ // Longitude
+ Double lonlitude = Double.valueOf(parser.group(index++));
+ lonlitude += Double.valueOf(parser.group(index++)) / 60;
+ if (parser.group(index++).compareTo("W") == 0) lonlitude = -lonlitude;
+ position.setLongitude(lonlitude);
+
+ // Altitude
+ position.setAltitude(0.0);
+
+ // Speed
+ position.setSpeed(Double.valueOf(parser.group(index++)));
+
+ // Course
+ String course = parser.group(index++);
+ if (course != null) {
+ position.setCourse(Double.valueOf(course));
+ } else {
+ position.setCourse(0.0);
+ }
+
+ // Date
+ time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
+ time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++)));
+ position.setTime(time.getTime());
+
+ // Get device by IMEI
+ String imei = parser.group(index++);
+ position.setDeviceId(dataManager.getDeviceByImei(imei).getId());
+
+ return position;
+ }
+
+ /**
+ * Disconnect channel
+ */
+ class DisconnectTask extends TimerTask {
+ private Channel channel;
+
+ public DisconnectTask(Channel channel) {
+ this.channel = channel;
+ }
+
+ public void run() {
+ channel.disconnect();
+ }
+ }
+
+ /**
+ * Handle connect event
+ */
+ @Override
+ public void handleUpstream(ChannelHandlerContext ctx, ChannelEvent evt) throws Exception {
+ super.handleUpstream(ctx, evt);
+
+ if (evt instanceof ChannelStateEvent) {
+ ChannelStateEvent event = (ChannelStateEvent) evt;
+
+ if (event.getState() == ChannelState.CONNECTED && event.getValue() != null && resetDelay != 0) {
+ new Timer().schedule(new DisconnectTask(evt.getChannel()), resetDelay);
+ }
+ }
+ }
+
+}