aboutsummaryrefslogtreecommitdiff
path: root/src/org/traccar/protocol/M2mProtocolDecoder.java
diff options
context:
space:
mode:
authorAnton Tananaev <anton.tananaev@gmail.com>2013-08-19 23:25:40 +1200
committerAnton Tananaev <anton.tananaev@gmail.com>2013-08-19 23:25:40 +1200
commitf03fbcc96e804c232a873d63eaf55060685ad3da (patch)
tree2ac84a74564611d4f321a7c81b550c7b0eaa6645 /src/org/traccar/protocol/M2mProtocolDecoder.java
parent6ec4bb34e99a56b2786b149d73f243246fb979d9 (diff)
downloadtrackermap-server-f03fbcc96e804c232a873d63eaf55060685ad3da.tar.gz
trackermap-server-f03fbcc96e804c232a873d63eaf55060685ad3da.tar.bz2
trackermap-server-f03fbcc96e804c232a873d63eaf55060685ad3da.zip
Add M2M mini protocol
Diffstat (limited to 'src/org/traccar/protocol/M2mProtocolDecoder.java')
-rw-r--r--src/org/traccar/protocol/M2mProtocolDecoder.java140
1 files changed, 140 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/M2mProtocolDecoder.java b/src/org/traccar/protocol/M2mProtocolDecoder.java
new file mode 100644
index 000000000..71ed026ed
--- /dev/null
+++ b/src/org/traccar/protocol/M2mProtocolDecoder.java
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2013 Anton Tananaev (anton.tananaev@gmail.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 org.traccar.protocol;
+
+import java.util.Calendar;
+import java.util.TimeZone;
+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.Log;
+import org.traccar.model.ExtendedInfoFormatter;
+import org.traccar.model.Position;
+
+public class M2mProtocolDecoder extends BaseProtocolDecoder {
+
+ public M2mProtocolDecoder(ServerManager serverManager) {
+ super(serverManager);
+ }
+
+ private boolean firstPacket = true;
+ private Long deviceId;
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg)
+ throws Exception {
+
+ ChannelBuffer buf = (ChannelBuffer) msg;
+
+ // Remove offset
+ for (int i = 0; i < buf.readableBytes(); i++) {
+ int b = buf.getByte(i);
+ if (b != 0x0b) {
+ buf.setByte(i, b - 0x20);
+ }
+ }
+
+ if (firstPacket) {
+
+ firstPacket = false;
+
+ // Read IMEI
+ StringBuilder imei = new StringBuilder();
+ for (int i = 0; i < 8; i++) {
+ int b = buf.readByte();
+ if (i != 0) {
+ imei.append(b / 10);
+ }
+ imei.append(b % 10);
+ }
+
+ // Identification
+ try {
+ deviceId = getDataManager().getDeviceByImei(imei.toString()).getId();
+ } catch(Exception error) {
+ Log.warning("Unknown device - " + imei);
+ }
+
+ } else if (deviceId != null) {
+
+ // Create new position
+ Position position = new Position();
+ ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("m2m");
+ position.setDeviceId(deviceId);
+
+ // Date and time
+ Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ time.clear();
+ time.set(Calendar.DAY_OF_MONTH, buf.readUnsignedByte() & 0x3f);
+ time.set(Calendar.MONTH, (buf.readUnsignedByte() & 0x3f) - 1);
+ time.set(Calendar.YEAR, 2000 + buf.readUnsignedByte());
+ time.set(Calendar.HOUR, buf.readUnsignedByte() & 0x3f);
+ time.set(Calendar.MINUTE, buf.readUnsignedByte() & 0x7f);
+ time.set(Calendar.SECOND, buf.readUnsignedByte() & 0x7f);
+ position.setTime(time.getTime());
+
+ // Location
+ int degrees = buf.readUnsignedByte();
+ double latitude = buf.readUnsignedByte();
+ latitude += buf.readUnsignedByte() / 100.0;
+ latitude += buf.readUnsignedByte() / 10000.0;
+ latitude /= 60;
+ latitude += degrees;
+
+ int b = buf.readUnsignedByte();
+
+ degrees = (b & 0x7f) * 100 + buf.readUnsignedByte();
+ double longitude = buf.readUnsignedByte();
+ longitude += buf.readUnsignedByte() / 100.0;
+ longitude += buf.readUnsignedByte() / 10000.0;
+ longitude /= 60;
+ longitude += degrees;
+
+ if ((b & 0x80) != 0) {
+ longitude = -longitude;
+ }
+ if ((b & 0x40) != 0) {
+ latitude = -latitude;
+ }
+
+ position.setLatitude(latitude);
+ position.setLongitude(longitude);
+ position.setSpeed((double) buf.readUnsignedByte());
+ position.setCourse(0.0);
+ position.setAltitude(0.0);
+
+ // Satellites
+ int satellites = buf.readUnsignedByte();
+ if (satellites == 0) {
+ return null; // cell information
+ }
+ extendedInfo.set("satellites", satellites);
+ position.setValid(true);
+
+ // TODO decode everything else
+
+ position.setExtendedInfo(extendedInfo.toString());
+ return position;
+
+ }
+
+ return null;
+ }
+
+}