Add Envotech SLM protocol

1 files changed, 103 insertions, 0 deletions

diff --git a/src/main/java/org/traccar/protocol/EnvotechProtocolDecoder.java b/src/main/java/org/traccar/protocol/EnvotechProtocolDecoder.java
new file mode 100644
index 000000000..083d8a921
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/EnvotechProtocolDecoder.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2022 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 io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+import org.traccar.helper.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.regex.Pattern;
+
+public class EnvotechProtocolDecoder extends BaseProtocolDecoder {
+
+    public EnvotechProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN = new PatternBuilder()
+            .text("$")
+            .number("dd")                        // mode
+            .expression("...,")                  // hardware
+            .number("(x+),")                     // event
+            .number("x+,")                       // group
+            .number("(x+),")                     // device id
+            .number("(dd)(dd)(dd)")              // date (ddmmyy)
+            .number("(dd)(dd)(dd),")             // time (hhmmss)
+            .number("xx")                        // connection status
+            .number("(dd)")                      // rssi
+            .number("d{5},")                     // mcc
+            .number("(ddd)")                     // power
+            .number("(ddd),")                    // battery
+            .number("(xx)")                      // inputs
+            .number("(xx),")                     // outputs
+            .number("(xxx)?,")                   // fuel
+            .number("(x{8}),")                   // status
+            .expression("[^']*'")
+            .number("(dd)(dd)(dd)")              // date (ddmmyy)
+            .number("(dd)(dd)(dd)")              // time (hhmmss)
+            .number("(d)")                       // fix
+            .number("(dd)(dd)(d+)([NS])")        // latitude
+            .number("(ddd)(dd)(d+)([EW])")       // longitude
+            .number("(ddd)")                     // speed
+            .number("(ddd)")                     // course
+            .any()
+            .compile();
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        Parser parser = new Parser(PATTERN, (String) msg);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+
+        position.set(Position.KEY_EVENT, parser.nextHexInt());
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
+        if (deviceSession == null) {
+            return null;
+        }
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        position.setDeviceTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS));
+
+        position.set(Position.KEY_RSSI, parser.nextInt());
+        position.set(Position.KEY_POWER, parser.nextInt() * 0.01);
+        position.set(Position.KEY_BATTERY, parser.nextInt() * 0.01);
+        position.set(Position.KEY_INPUT, parser.nextHexInt());
+        position.set(Position.PREFIX_OUT, parser.nextHexInt());
+        position.set(Position.KEY_FUEL_LEVEL, parser.nextHexInt());
+        position.set(Position.KEY_STATUS, parser.nextHexInt());
+
+        position.setFixTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS));
+        position.setValid(parser.nextInt() > 0);
+        position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_MIN_MIN_HEM));
+        position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_MIN_MIN_HEM));
+        position.setSpeed(parser.nextInt());
+        position.setCourse(parser.nextInt());
+
+        return position;
+    }
+
+}