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Diffstat (limited to 'src/org/traccar/protocol/H02ProtocolDecoder.java')
-rw-r--r--src/org/traccar/protocol/H02ProtocolDecoder.java113
1 files changed, 101 insertions, 12 deletions
diff --git a/src/org/traccar/protocol/H02ProtocolDecoder.java b/src/org/traccar/protocol/H02ProtocolDecoder.java
index b997d5e28..7bf589bef 100644
--- a/src/org/traccar/protocol/H02ProtocolDecoder.java
+++ b/src/org/traccar/protocol/H02ProtocolDecoder.java
@@ -15,14 +15,17 @@
*/
package org.traccar.protocol;
+import java.nio.charset.Charset;
import java.util.Calendar;
import java.util.TimeZone;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
+import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.traccar.BaseProtocolDecoder;
import org.traccar.ServerManager;
+import org.traccar.helper.ChannelBufferTools;
import org.traccar.helper.Log;
import org.traccar.model.ExtendedInfoFormatter;
import org.traccar.model.Position;
@@ -32,14 +35,83 @@ public class H02ProtocolDecoder extends BaseProtocolDecoder {
public H02ProtocolDecoder(ServerManager serverManager) {
super(serverManager);
}
+
+ private static double readCoordinate(ChannelBuffer buf, boolean lon) {
+
+ int degrees = ChannelBufferTools.readHexInteger(buf, 2);
+ if (lon) {
+ degrees = degrees * 10 + (buf.getByte(buf.readerIndex()) >> 4);
+ }
+
+ double result = 0;
+ if (lon) {
+ result = buf.readUnsignedByte() & 0x0f;
+ }
+ result = result * 10 + ChannelBufferTools.readHexInteger(buf, lon ? 5 : 6) * 0.0001;
+
+ result /= 60;
+ result += degrees;
+
+ return result;
+ }
+
+ private Position decodeBinary(ChannelBuffer buf) {
+
+ // Create new position
+ Position position = new Position();
+ ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("h02");
+
+ buf.readByte(); // marker
+
+ // Identification
+ String id = String.valueOf(
+ (buf.readUnsignedInt() << 8) + buf.readUnsignedByte());
+ try {
+ position.setDeviceId(getDataManager().getDeviceByImei(id).getId());
+ } catch(Exception error) {
+ Log.warning("Unknown device - " + id);
+ return null;
+ }
+
+ // Time
+ Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ time.clear();
+ time.set(Calendar.HOUR, ChannelBufferTools.readHexInteger(buf, 2));
+ time.set(Calendar.MINUTE, ChannelBufferTools.readHexInteger(buf, 2));
+ time.set(Calendar.SECOND, ChannelBufferTools.readHexInteger(buf, 2));
+ time.set(Calendar.DAY_OF_MONTH, ChannelBufferTools.readHexInteger(buf, 2));
+ time.set(Calendar.MONTH, ChannelBufferTools.readHexInteger(buf, 2) - 1);
+ time.set(Calendar.YEAR, 2000 + ChannelBufferTools.readHexInteger(buf, 2));
+ position.setTime(time.getTime());
+
+ // Location
+ double latitude = readCoordinate(buf, false);
+ int x = buf.readByte(); // reserved
+ double longitude = readCoordinate(buf, true);
+ int flags = buf.readUnsignedByte() & 0x0f;
+ position.setValid((flags & 0x02) != 0);
+ if ((flags & 0x04) == 0) latitude = -latitude;
+ if ((flags & 0x08) == 0) longitude = -longitude;
+ position.setLatitude(latitude);
+ position.setLongitude(longitude);
+ position.setAltitude(0.0);
+
+ // Speed and course
+ position.setSpeed((double) ChannelBufferTools.readHexInteger(buf, 3));
+ position.setCourse((buf.readUnsignedByte() & 0x0f) * 100.0 + ChannelBufferTools.readHexInteger(buf, 2));
+
+ // Status
+ extendedInfo.set("status", ChannelBufferTools.readHexString(buf, 8));
+
+ position.setExtendedInfo(extendedInfo.toString());
+ return position;
+ }
- /**
- * Regular expressions pattern
- */
static private Pattern pattern = Pattern.compile(
- "\\*HQ," +
+ "\\*..," + // Manufacturer
"(\\d+)," + // IMEI
"V\\d," + // Version?
+ ".*" +
"(\\d{2})(\\d{2})(\\d{2})," + // Time (HHMMSS)
"([AV])," + // Validity
"(\\d+)(\\d{2}.\\d{4})," + // Latitude (DDMM.MMMM)
@@ -49,15 +121,12 @@ public class H02ProtocolDecoder extends BaseProtocolDecoder {
"(\\d+.\\d+)," + // Speed
"(\\d+.\\d+)?," + // Course
"(\\d{2})(\\d{2})(\\d{2})," + // Date (DDMMYY)
+ "(\\p{XDigit}{8})" + // Status
".*");
-
- @Override
- protected Object decode(
- ChannelHandlerContext ctx, Channel channel, Object msg)
- throws Exception {
+
+ private Position decodeText(String sentence) {
// Parse message
- String sentence = (String) msg;
Matcher parser = pattern.matcher(sentence);
if (!parser.matches()) {
return null;
@@ -119,11 +188,31 @@ public class H02ProtocolDecoder extends BaseProtocolDecoder {
time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++)));
position.setTime(time.getTime());
+
+ // Status
+ extendedInfo.set("status", parser.group(index++));
- // Extended info
position.setExtendedInfo(extendedInfo.toString());
-
return position;
}
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg)
+ throws Exception {
+
+ ChannelBuffer buf = (ChannelBuffer) msg;
+ String marker = buf.toString(0, 1, Charset.defaultCharset());
+
+ // TODO X mode?
+
+ if (marker.equals("*")) {
+ return decodeText(buf.toString(Charset.defaultCharset()));
+ } else if (marker.equals("$")) {
+ return decodeBinary(buf);
+ }
+
+ return null;
+ }
+
}