Implement Freematics UDP protocol

1 files changed, 103 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/FreematicsProtocolDecoder.java b/src/org/traccar/protocol/FreematicsProtocolDecoder.java
new file mode 100644
index 000000000..66e451d6d
--- /dev/null
+++ b/src/org/traccar/protocol/FreematicsProtocolDecoder.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2018 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 org.jboss.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.Date;
+
+public class FreematicsProtocolDecoder extends BaseProtocolDecoder {
+
+    public FreematicsProtocolDecoder(FreematicsProtocol protocol) {
+        super(protocol);
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        String sentence = (String) msg;
+        int startIndex = sentence.indexOf('#');
+        int endIndex = sentence.indexOf('*');
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, sentence.substring(0, startIndex));
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+        position.setValid(true);
+
+        DateBuilder dateBuilder = new DateBuilder(new Date());
+
+        for (String pair : sentence.substring(startIndex + 1, endIndex).split(",")) {
+            String[] data = pair.split("=");
+            int key = Integer.parseInt(data[0], 16);
+            String value = data[1];
+            switch (key) {
+                case 0x11:
+                    value = ("000000" + value).substring(value.length());
+                    dateBuilder.setDateReverse(
+                            Integer.parseInt(value.substring(0, 2)),
+                            Integer.parseInt(value.substring(2, 4)),
+                            Integer.parseInt(value.substring(4)));
+                    break;
+                case 0x10:
+                    value = ("00000000" + value).substring(value.length());
+                    dateBuilder.setTime(
+                            Integer.parseInt(value.substring(0, 2)),
+                            Integer.parseInt(value.substring(2, 4)),
+                            Integer.parseInt(value.substring(4, 6)),
+                            Integer.parseInt(value.substring(6)) * 10);
+                    break;
+                case 0xA:
+                    position.setLatitude(Double.parseDouble(value));
+                    break;
+                case 0xB:
+                    position.setLongitude(Double.parseDouble(value));
+                    break;
+                case 0xC:
+                    position.setAltitude(Integer.parseInt(value));
+                    break;
+                case 0xD:
+                    position.setLatitude(UnitsConverter.knotsFromKph(Integer.parseInt(value)));
+                    break;
+                case 0xE:
+                    position.setCourse(Integer.parseInt(value));
+                    break;
+                case 0xF:
+                    position.set(Position.KEY_SATELLITES, Integer.parseInt(value));
+                    break;
+                default:
+                    position.set(data[0], value);
+                    break;
+            }
+
+        }
+
+        position.setTime(dateBuilder.getDate());
+
+        return position;
+    }
+
+}