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Polina
2026-07-02 18:05:10 +00:00
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33
venv/Lib/site-packages/dns/rdtypes/__init__.py Normal file
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# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
# Copyright (C) 2003-2007, 2009-2011 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 type classes"""
__all__ = [
"ANY",
"IN",
"CH",
"dnskeybase",
"dsbase",
"euibase",
"mxbase",
"nsbase",
"svcbbase",
"tlsabase",
"txtbase",
"util",
]

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venv/Lib/site-packages/dns/rdtypes/dnskeybase.py Normal file
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# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
# Copyright (C) 2004-2007, 2009-2011 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.
import base64
import enum
import struct
import dns.dnssectypes
import dns.exception
import dns.immutable
import dns.rdata
# wildcard import
__all__ = ["SEP", "REVOKE", "ZONE"] # noqa: F822
class Flag(enum.IntFlag):
SEP = 0x0001
REVOKE = 0x0080
ZONE = 0x0100
@dns.immutable.immutable
class DNSKEYBase(dns.rdata.Rdata):
"""Base class for rdata that is like a DNSKEY record"""
__slots__ = ["flags", "protocol", "algorithm", "key"]
def __init__(self, rdclass, rdtype, flags, protocol, algorithm, key):
super().__init__(rdclass, rdtype)
self.flags = Flag(self._as_uint16(flags))
self.protocol = self._as_uint8(protocol)
self.algorithm = dns.dnssectypes.Algorithm.make(algorithm)
self.key = self._as_bytes(key)
def to_text(self, origin=None, relativize=True, **kw):
key = dns.rdata._base64ify(self.key, **kw) # pyright: ignore
return f"{self.flags} {self.protocol} {self.algorithm} {key}"
@classmethod
def from_text(
cls, rdclass, rdtype, tok, origin=None, relativize=True, relativize_to=None
):
flags = tok.get_uint16()
protocol = tok.get_uint8()
algorithm = tok.get_string()
b64 = tok.concatenate_remaining_identifiers().encode()
key = base64.b64decode(b64)
return cls(rdclass, rdtype, flags, protocol, algorithm, key)
def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
header = struct.pack("!HBB", self.flags, self.protocol, self.algorithm)
file.write(header)
file.write(self.key)
@classmethod
def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
header = parser.get_struct("!HBB")
key = parser.get_remaining()
return cls(rdclass, rdtype, header[0], header[1], header[2], key)
### BEGIN generated Flag constants
SEP = Flag.SEP
REVOKE = Flag.REVOKE
ZONE = Flag.ZONE
### END generated Flag constants

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venv/Lib/site-packages/dns/rdtypes/dsbase.py Normal file
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# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
# Copyright (C) 2010, 2011 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.
import binascii
import struct
import dns.dnssectypes
import dns.immutable
import dns.rdata
import dns.rdatatype
@dns.immutable.immutable
class DSBase(dns.rdata.Rdata):
"""Base class for rdata that is like a DS record"""
__slots__ = ["key_tag", "algorithm", "digest_type", "digest"]
# Digest types registry:
# https://www.iana.org/assignments/ds-rr-types/ds-rr-types.xhtml
_digest_length_by_type = {
1: 20, # SHA-1, RFC 3658 Sec. 2.4
2: 32, # SHA-256, RFC 4509 Sec. 2.2
3: 32, # GOST R 34.11-94, RFC 5933 Sec. 4 in conjunction with RFC 4490 Sec. 2.1
4: 48, # SHA-384, RFC 6605 Sec. 2
}
def __init__(self, rdclass, rdtype, key_tag, algorithm, digest_type, digest):
super().__init__(rdclass, rdtype)
self.key_tag = self._as_uint16(key_tag)
self.algorithm = dns.dnssectypes.Algorithm.make(algorithm)
self.digest_type = dns.dnssectypes.DSDigest.make(self._as_uint8(digest_type))
self.digest = self._as_bytes(digest)
try:
if len(self.digest) != self._digest_length_by_type[self.digest_type]:
raise ValueError("digest length inconsistent with digest type")
except KeyError:
if self.digest_type == 0: # reserved, RFC 3658 Sec. 2.4
raise ValueError("digest type 0 is reserved")
def to_text(self, origin=None, relativize=True, **kw):
kw = kw.copy()
chunksize = kw.pop("chunksize", 128)
digest = dns.rdata._hexify(
self.digest, chunksize=chunksize, **kw # pyright: ignore
)
return f"{self.key_tag} {self.algorithm} {self.digest_type} {digest}"
@classmethod
def from_text(
cls, rdclass, rdtype, tok, origin=None, relativize=True, relativize_to=None
):
key_tag = tok.get_uint16()
algorithm = tok.get_string()
digest_type = tok.get_uint8()
digest = tok.concatenate_remaining_identifiers().encode()
digest = binascii.unhexlify(digest)
return cls(rdclass, rdtype, key_tag, algorithm, digest_type, digest)
def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
header = struct.pack("!HBB", self.key_tag, self.algorithm, self.digest_type)
file.write(header)
file.write(self.digest)
@classmethod
def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
header = parser.get_struct("!HBB")
digest = parser.get_remaining()
return cls(rdclass, rdtype, header[0], header[1], header[2], digest)

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venv/Lib/site-packages/dns/rdtypes/euibase.py Normal file
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# Copyright (C) 2015 Red Hat, Inc.
# Author: Petr Spacek <pspacek@redhat.com>
#
# 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 RED HAT 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.
import binascii
import dns.exception
import dns.immutable
import dns.rdata
@dns.immutable.immutable
class EUIBase(dns.rdata.Rdata):
"""EUIxx record"""
# see: rfc7043.txt
__slots__ = ["eui"]
# redefine these in subclasses
byte_len = 0
text_len = 0
# byte_len = 6 # 0123456789ab (in hex)
# text_len = byte_len * 3 - 1 # 01-23-45-67-89-ab
def __init__(self, rdclass, rdtype, eui):
super().__init__(rdclass, rdtype)
self.eui = self._as_bytes(eui)
if len(self.eui) != self.byte_len:
raise dns.exception.FormError(
f"EUI{self.byte_len * 8} rdata has to have {self.byte_len} bytes"
)
def to_text(self, origin=None, relativize=True, **kw):
return dns.rdata._hexify(self.eui, chunksize=2, separator=b"-", **kw)
@classmethod
def from_text(
cls, rdclass, rdtype, tok, origin=None, relativize=True, relativize_to=None
):
text = tok.get_string()
if len(text) != cls.text_len:
raise dns.exception.SyntaxError(
f"Input text must have {cls.text_len} characters"
)
for i in range(2, cls.byte_len * 3 - 1, 3):
if text[i] != "-":
raise dns.exception.SyntaxError(f"Dash expected at position {i}")
text = text.replace("-", "")
try:
data = binascii.unhexlify(text.encode())
except (ValueError, TypeError) as ex:
raise dns.exception.SyntaxError(f"Hex decoding error: {str(ex)}")
return cls(rdclass, rdtype, data)
def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
file.write(self.eui)
@classmethod
def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
eui = parser.get_bytes(cls.byte_len)
return cls(rdclass, rdtype, eui)

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venv/Lib/site-packages/dns/rdtypes/mxbase.py Normal file
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# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
# Copyright (C) 2003-2007, 2009-2011 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.
"""MX-like base classes."""
import struct
import dns.exception
import dns.immutable
import dns.name
import dns.rdata
import dns.rdtypes.util
@dns.immutable.immutable
class MXBase(dns.rdata.Rdata):
"""Base class for rdata that is like an MX record."""
__slots__ = ["preference", "exchange"]
def __init__(self, rdclass, rdtype, preference, exchange):
super().__init__(rdclass, rdtype)
self.preference = self._as_uint16(preference)
self.exchange = self._as_name(exchange)
def to_text(self, origin=None, relativize=True, **kw):
exchange = self.exchange.choose_relativity(origin, relativize)
return f"{self.preference} {exchange}"
@classmethod
def from_text(
cls, rdclass, rdtype, tok, origin=None, relativize=True, relativize_to=None
):
preference = tok.get_uint16()
exchange = tok.get_name(origin, relativize, relativize_to)
return cls(rdclass, rdtype, preference, exchange)
def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
pref = struct.pack("!H", self.preference)
file.write(pref)
self.exchange.to_wire(file, compress, origin, canonicalize)
@classmethod
def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
preference = parser.get_uint16()
exchange = parser.get_name(origin)
return cls(rdclass, rdtype, preference, exchange)
def _processing_priority(self):
return self.preference
@classmethod
def _processing_order(cls, iterable):
return dns.rdtypes.util.priority_processing_order(iterable)
@dns.immutable.immutable
class UncompressedMX(MXBase):
"""Base class for rdata that is like an MX record, but whose name
is not compressed when converted to DNS wire format, and whose
digestable form is not downcased."""
def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
super()._to_wire(file, None, origin, False)
@dns.immutable.immutable
class UncompressedDowncasingMX(MXBase):
"""Base class for rdata that is like an MX record, but whose name
is not compressed when convert to DNS wire format."""
def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
super()._to_wire(file, None, origin, canonicalize)