Catalyst / admin/Synapse-Cortex 14.8 GB / 57.8 GB 40.0 GB free
Help Sign in

admin / Synapse-Cortex

public

Self Hosted ITSM Tool with RBAC/Tenanting and MFA

Code Issues Pull requests Pipelines Packages Security Insights Wiki Settings
Synapse-Cortex / Synapse-Cortexv2 / .venv / Lib / site-packages / dns / rdataclass.py 2984 B · main 
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license

# Copyright (C) 2001-2017 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

"""DNS Rdata Classes."""

import dns.enum
import dns.exception


class RdataClass(dns.enum.IntEnum):
    """DNS Rdata Class"""

    RESERVED0 = 0
    IN = 1
    INTERNET = IN
    CH = 3
    CHAOS = CH
    HS = 4
    HESIOD = HS
    NONE = 254
    ANY = 255

    @classmethod
    def _maximum(cls):
        return 65535

    @classmethod
    def _short_name(cls):
        return "class"

    @classmethod
    def _prefix(cls):
        return "CLASS"

    @classmethod
    def _unknown_exception_class(cls):
        return UnknownRdataclass


_metaclasses = {RdataClass.NONE, RdataClass.ANY}


class UnknownRdataclass(dns.exception.DNSException):
    """A DNS class is unknown."""


def from_text(text: str) -> RdataClass:
    """Convert text into a DNS rdata class value.

    The input text can be a defined DNS RR class mnemonic or
    instance of the DNS generic class syntax.

    For example, "IN" and "CLASS1" will both result in a value of 1.

    Raises ``dns.rdatatype.UnknownRdataclass`` if the class is unknown.

    Raises ``ValueError`` if the rdata class value is not >= 0 and <= 65535.

    Returns a ``dns.rdataclass.RdataClass``.
    """

    return RdataClass.from_text(text)


def to_text(value: RdataClass) -> str:
    """Convert a DNS rdata class value to text.

    If the value has a known mnemonic, it will be used, otherwise the
    DNS generic class syntax will be used.

    Raises ``ValueError`` if the rdata class value is not >= 0 and <= 65535.

    Returns a ``str``.
    """

    return RdataClass.to_text(value)


def is_metaclass(rdclass: RdataClass) -> bool:
    """True if the specified class is a metaclass.

    The currently defined metaclasses are ANY and NONE.

    *rdclass* is a ``dns.rdataclass.RdataClass``.
    """

    if rdclass in _metaclasses:
        return True
    return False


### BEGIN generated RdataClass constants

RESERVED0 = RdataClass.RESERVED0
IN = RdataClass.IN
INTERNET = RdataClass.INTERNET
CH = RdataClass.CH
CHAOS = RdataClass.CHAOS
HS = RdataClass.HS
HESIOD = RdataClass.HESIOD
NONE = RdataClass.NONE
ANY = RdataClass.ANY

### END generated RdataClass constants