56 lines
1.1 KiB
Python
56 lines
1.1 KiB
Python
#!/usr/bin/env python2
|
|
|
|
""" DNS CLASS and QCLASS values
|
|
|
|
This module contains an Enum of CLASS and QCLASS values. The Enum also contains
|
|
a method for converting values to strings. See sections 3.2.4 and 3.2.5 of RFC
|
|
1035 for more information.
|
|
"""
|
|
|
|
|
|
class Class(object):
|
|
""" Enum of CLASS and QCLASS values
|
|
|
|
Usage:
|
|
>>> Class.IN
|
|
1
|
|
>>> Class.ANY
|
|
255
|
|
"""
|
|
|
|
IN = 1
|
|
CS = 2
|
|
CH = 3
|
|
HS = 4
|
|
ANY = 255
|
|
|
|
by_string = {
|
|
"IN": IN,
|
|
"CS": CS,
|
|
"CH": CH,
|
|
"HS": HS,
|
|
"*": ANY
|
|
}
|
|
|
|
by_value = dict([(y, x) for x, y in by_string.items()])
|
|
|
|
@staticmethod
|
|
def to_string(class_):
|
|
""" Convert a Class to a string
|
|
|
|
Usage:
|
|
>>> Class.to_string(Class.IN)
|
|
'IN'
|
|
"""
|
|
return Class.by_value[class_]
|
|
|
|
@staticmethod
|
|
def from_string(string):
|
|
""" Convert a string to a Class
|
|
|
|
Usage:
|
|
>>> Class.from_string('IN')
|
|
1
|
|
"""
|
|
return Class.by_string[string]
|