1 files changed, 17 insertions, 0 deletions
diff --git a/leap/util/net.py b/leap/util/net.py
index 10e72a4..a4104d0 100644
--- a/leap/util/net.py
+++ b/leap/util/net.py
@@ -38,6 +38,23 @@ class PermissionsError(SystemExit):
     """This test requires admin or root privileges to run. Exiting..."""
 
 
+def checkIPaddress(addr):
+    """
+    Check that a given string is a valid IPv4 or IPv6 address.
+
+    @param addr: Any string defining an IP address, i.e. '1.2.3.4' or '::1'.
+    @returns: True if :param:`addr` defines a valid IPAddress, else False.
+    """
+    import ipaddr
+
+    try:
+        check = ipaddr.IPAddress(addr)
+    except ValueError, ve:
+        log.warn(ve.message)
+        return False
+    else:
+        return True
+
 def getClientPlatform(platform_name=None):
     for name, test in PLATFORMS.items():
         if not platform_name or platform_name.upper() == name: