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?? __init__.py(1.62 KB)
?? __pycache__
?? _asyncbackend.py(2.34 KB)
?? _asyncio_backend.py(8.84 KB)
?? _ddr.py(5.12 KB)
?? _features.py(2.43 KB)
?? _immutable_ctx.py(2.4 KB)
?? _trio_backend.py(8.27 KB)
?? asyncbackend.py(2.73 KB)
?? asyncquery.py(30.1 KB)
?? asyncresolver.py(17.43 KB)
?? dnssec.py(40.74 KB)
?? dnssecalgs
?? dnssectypes.py(1.76 KB)
?? e164.py(3.88 KB)
?? edns.py(16.69 KB)
?? entropy.py(4.14 KB)
?? enum.py(3.6 KB)
?? exception.py(5.81 KB)
?? flags.py(2.69 KB)
?? grange.py(2.09 KB)
?? immutable.py(1.97 KB)
?? inet.py(5.64 KB)
?? ipv4.py(2.49 KB)
?? ipv6.py(6.4 KB)
?? message.py(66.59 KB)
?? name.py(41.78 KB)
?? namedict.py(3.91 KB)
?? nameserver.py(9.88 KB)
?? node.py(12.37 KB)
?? opcode.py(2.67 KB)
?? py.typed(0 B)
?? query.py(54.98 KB)
?? quic
?? rcode.py(4.06 KB)
?? rdata.py(30.29 KB)
?? rdataclass.py(2.91 KB)
?? rdataset.py(16.27 KB)
?? rdatatype.py(7.27 KB)
?? rdtypes
?? renderer.py(10.99 KB)
?? resolver.py(72 KB)
?? reversename.py(3.74 KB)
?? rrset.py(8.96 KB)
?? serial.py(3.52 KB)
?? set.py(9 KB)
?? tokenizer.py(23.03 KB)
?? transaction.py(22.06 KB)
?? tsig.py(11.15 KB)
?? tsigkeyring.py(2.57 KB)
?? ttl.py(2.91 KB)
?? update.py(11.96 KB)
?? version.py(1.88 KB)
?? versioned.py(11.49 KB)
?? win32util.py(8.67 KB)
?? wire.py(2.76 KB)
?? xfr.py(12.96 KB)
?? zone.py(50.87 KB)
?? zonefile.py(27.27 KB)
?? zonetypes.py(690 B)

Editing: opcode.py

# 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 Opcodes."""

import dns.enum
import dns.exception

class Opcode(dns.enum.IntEnum):
    #: Query
    QUERY = 0
    #: Inverse Query (historical)
    IQUERY = 1
    #: Server Status (unspecified and unimplemented anywhere)
    STATUS = 2
    #: Notify
    NOTIFY = 4
    #: Dynamic Update
    UPDATE = 5

@classmethod
    def _maximum(cls):
        return 15

@classmethod
    def _unknown_exception_class(cls):
        return UnknownOpcode

class UnknownOpcode(dns.exception.DNSException):
    """An DNS opcode is unknown."""

def from_text(text: str) -> Opcode:
    """Convert text into an opcode.

*text*, a ``str``, the textual opcode

Raises ``dns.opcode.UnknownOpcode`` if the opcode is unknown.

Returns an ``int``.
    """

return Opcode.from_text(text)

def from_flags(flags: int) -> Opcode:
    """Extract an opcode from DNS message flags.

*flags*, an ``int``, the DNS flags.

Returns an ``int``.
    """

return Opcode((flags & 0x7800) >> 11)

def to_flags(value: Opcode) -> int:
    """Convert an opcode to a value suitable for ORing into DNS message
    flags.

*value*, an ``int``, the DNS opcode value.

Returns an ``int``.
    """

return (value << 11) & 0x7800

def to_text(value: Opcode) -> str:
    """Convert an opcode to text.

*value*, an ``int`` the opcode value,

Raises ``dns.opcode.UnknownOpcode`` if the opcode is unknown.

Returns a ``str``.
    """

return Opcode.to_text(value)

def is_update(flags: int) -> bool:
    """Is the opcode in flags UPDATE?

*flags*, an ``int``, the DNS message flags.

Returns a ``bool``.
    """

return from_flags(flags) == Opcode.UPDATE

### BEGIN generated Opcode constants

QUERY = Opcode.QUERY
IQUERY = Opcode.IQUERY
STATUS = Opcode.STATUS
NOTIFY = Opcode.NOTIFY
UPDATE = Opcode.UPDATE

### END generated Opcode constants

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