2 files changed, 37 insertions, 4 deletions
diff --git a/src/main/java/org/traccar/helper/StringUtil.java b/src/main/java/org/traccar/helper/StringUtil.java
new file mode 100644
index 000000000..9b4d717f4
--- /dev/null
+++ b/src/main/java/org/traccar/helper/StringUtil.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2023 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.helper;
+
+public final class StringUtil {
+
+    private StringUtil() {
+    }
+
+    public static boolean containsHex(String value) {
+        for (char c : value.toCharArray()) {
+            if (c >= 'a' && c <= 'f' || c >= 'A' && c <= 'F') {
+                return true;
+            }
+        }
+        return false;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java b/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java
index e100d0dc0..40d56b130 100644
--- a/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2022 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2023 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.
@@ -19,6 +19,7 @@ import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
+import org.traccar.helper.StringUtil;
 import org.traccar.session.DeviceSession;
 import org.traccar.NetworkMessage;
 import org.traccar.Protocol;
@@ -139,7 +140,7 @@ public class WatchProtocolDecoder extends BaseProtocolDecoder {
         String[] values = parser.next().split(",");
         int index = 0;
 
-        if (values.length < 4 || !values[index + 3].startsWith("F")) {
+        if (values.length < 4 || !StringUtil.containsHex(values[index + 3])) {
 
             Network network = new Network();
 
@@ -150,8 +151,8 @@ public class WatchProtocolDecoder extends BaseProtocolDecoder {
                 int mnc = !values[index].isEmpty() ? Integer.parseInt(values[index++]) : 0;
 
                 for (int i = 0; i < cellCount; i++) {
-                    int lac = Integer.parseInt(values[index++]);
-                    int cid = Integer.parseInt(values[index++]);
+                    int lac = Integer.parseInt(values[index], StringUtil.containsHex(values[index++]) ? 16 : 10);
+                    int cid = Integer.parseInt(values[index], StringUtil.containsHex(values[index++]) ? 16 : 10);
                     String rssi = values[index++];
                     if (!rssi.isEmpty()) {
                         network.addCellTower(CellTower.from(mcc, mnc, lac, cid, Integer.parseInt(rssi)));