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-rw-r--r--src/org/traccar/protocol/CellocatorProtocolDecoder.java172
1 files changed, 172 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/CellocatorProtocolDecoder.java b/src/org/traccar/protocol/CellocatorProtocolDecoder.java
new file mode 100644
index 000000000..aabda6f51
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+++ b/src/org/traccar/protocol/CellocatorProtocolDecoder.java
@@ -0,0 +1,172 @@
+/*
+ * 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.nio.ByteOrder;
+import java.util.Calendar;
+import java.util.TimeZone;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+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.Position;
+
+public class CellocatorProtocolDecoder extends BaseProtocolDecoder {
+
+ public CellocatorProtocolDecoder(ServerManager serverManager) {
+ super(serverManager);
+ }
+
+ private String readImei(ChannelBuffer buf) {
+ int b = buf.readUnsignedByte();
+ StringBuilder imei = new StringBuilder();
+ imei.append(b & 0x0F);
+ for (int i = 0; i < 7; i++) {
+ b = buf.readUnsignedByte();
+ imei.append((b & 0xF0) >> 4);
+ imei.append(b & 0x0F);
+ }
+ return imei.toString();
+ }
+
+ static final int MSG_CLIENT_STATUS = 0;
+ static final int MSG_CLIENT_PROGRAMMING = 3;
+ static final int MSG_CLIENT_SERIAL_LOG = 7;
+ static final int MSG_CLIENT_SERIAL = 8;
+ static final int MSG_CLIENT_MODULAR = 9;
+
+ private static final int MSG_SERVER_ACKNOWLEDGE = 4;
+
+ private byte commandCount;
+
+ private void sendReply(Channel channel, long deviceId, byte packetNumber) {
+ ChannelBuffer reply = ChannelBuffers.directBuffer(ByteOrder.LITTLE_ENDIAN, 28);
+ reply.writeByte('M');
+ reply.writeByte('C');
+ reply.writeByte('G');
+ reply.writeByte('P');
+ reply.writeByte(MSG_SERVER_ACKNOWLEDGE);
+ reply.writeInt((int) deviceId);
+ reply.writeByte(commandCount++);
+ reply.writeInt(0); // authentication code
+ reply.writeByte(0);
+ reply.writeByte(packetNumber);
+ reply.writeZero(10);
+
+ byte checksum = 0;
+ for (int i = 4; i < 27; i++) {
+ checksum += reply.getByte(i);
+ }
+ reply.writeByte(checksum);
+
+ if (channel != null) {
+ channel.write(reply);
+ }
+ }
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg)
+ throws Exception {
+
+ ChannelBuffer buf = (ChannelBuffer) msg;
+
+ buf.skipBytes(4); // system code
+ int type = buf.readUnsignedByte();
+ long deviceId = buf.readUnsignedInt();
+
+ if (type != MSG_CLIENT_SERIAL) {
+ buf.readUnsignedShort(); // communication control
+ }
+ byte packetNumber = buf.readByte();
+
+ // Send reply
+ sendReply(channel, deviceId, packetNumber);
+
+ // Parse location
+ if (type == MSG_CLIENT_STATUS) {
+ Position position = new Position();
+ StringBuilder extendedInfo = new StringBuilder("<protocol>cellocator</protocol>");
+
+ // Device identifier
+ try {
+ position.setDeviceId(getDataManager().getDeviceByImei(String.valueOf(deviceId)).getId());
+ } catch(Exception error) {
+ Log.warning("Unknown device - " + deviceId);
+ return null;
+ }
+
+ buf.readUnsignedByte(); // hardware version
+ buf.readUnsignedByte(); // software version
+ buf.readUnsignedByte(); // protocol version
+
+ // Status
+ extendedInfo.append("<status>");
+ extendedInfo.append(buf.getUnsignedByte(buf.readerIndex()) & 0x0f);
+ extendedInfo.append("</status>");
+
+ int operator = (buf.readUnsignedByte() & 0xf0) << 4;
+ operator += buf.readUnsignedByte();
+
+ buf.readUnsignedByte(); // reason data
+ buf.readUnsignedByte(); // reason
+ buf.readUnsignedByte(); // mode
+ buf.readUnsignedInt(); // IO
+
+ operator <<= 8;
+ operator += buf.readUnsignedByte();
+ extendedInfo.append("<operator>").append(operator).append("</operator>");
+
+ buf.readUnsignedInt(); // ADC
+ buf.readUnsignedMedium(); // milage
+ buf.skipBytes(6); // multi-purpose data
+
+ buf.readUnsignedShort(); // gps fix
+ buf.readUnsignedByte(); // location status
+ buf.readUnsignedByte(); // mode 1
+ buf.readUnsignedByte(); // mode 2
+
+ position.setValid(buf.readUnsignedByte() >= 3); // satellites
+
+ // Location data
+ position.setLongitude(buf.readInt() / Math.PI * 180 / 100000000);
+ position.setLatitude(buf.readInt() / Math.PI * 180 / 100000000.0);
+ position.setAltitude(buf.readInt() * 0.01);
+ position.setSpeed(buf.readInt() * 0.01 * 1.943844);
+ position.setCourse(buf.readUnsignedShort() / Math.PI * 180.0 / 1000.0);
+
+ // Time
+ Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ time.clear();
+ time.set(Calendar.SECOND, buf.readUnsignedByte());
+ time.set(Calendar.MINUTE, buf.readUnsignedByte());
+ time.set(Calendar.HOUR, buf.readUnsignedByte());
+ time.set(Calendar.DAY_OF_MONTH, buf.readUnsignedByte());
+ time.set(Calendar.MONTH, buf.readUnsignedByte() - 1);
+ time.set(Calendar.YEAR, buf.readUnsignedShort());
+ position.setTime(time.getTime());
+
+ position.setExtendedInfo(extendedInfo.toString());
+ return position;
+ }
+
+ return null;
+ }
+
+}