New validators collection for standards UNIX entities

settingsd/validators/__init__.py

 # -*- coding: utf-8 -*-
 
 
-__all__ = ["common", "network"]
+__all__ = ["common", "network", "os"]
 
 
 from common import ValidatorError

settingsd/validators/os.py

+# -*- coding: utf-8 -*-
+
+
+import re
+
+from common import ValidatorError
+
+
+##### Public methods #####
+def validUserName(arg) :
+	if re.match("^[a-z_][a-z0-9_-]*$", arg) == None :
+		raise ValidatorError("Argument \"%s\" is not valid UNIX user name" % (arg))
+	return arg
+
+def validGroupName(arg) :
+	if re.match("^[a-z_][a-z0-9_-]*$", arg) == None :
+		raise ValidatorError("Argument \"%s\" is not valid UNIX group name" % (arg))
+	return arg
+