Make a single NetworkingUtil

CURA-6483

cura/Utils/NetworkingUtil.py

@@ -0,0 +1,44 @@
+# Copyright (c) 2019 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+import socket
+from typing import Optional
+
+from PyQt5.QtCore import QObject, pyqtSlot
+
+
+#
+# This is a QObject because some of the functions can be used (and are useful) in QML.
+#
+class NetworkingUtil(QObject):
+
+    def __init__(self, parent: Optional["QObject"] = None) -> None:
+        super().__init__(parent = parent)
+
+    # Checks if the given string is a valid IPv4 address.
+    @pyqtSlot(str, result = bool)
+    def isIPv4(self, address: str) -> bool:
+        try:
+            socket.inet_pton(socket.AF_INET, address)
+            result = True
+        except:
+            result = False
+        return result
+
+    # Checks if the given string is a valid IPv6 address.
+    @pyqtSlot(str, result = bool)
+    def isIPv6(self, address: str) -> bool:
+        try:
+            socket.inet_pton(socket.AF_INET6, address)
+            result = True
+        except:
+            result = False
+        return result
+
+    # Checks if the given string is a valid IPv4 or IPv6 address.
+    @pyqtSlot(str, result = bool)
+    def isValidIP(self, address: str) -> bool:
+        return self.isIPv4(address) or self.isIPv6(address)
+
+
+__all__ = ["NetworkingUtil"]