mirror of https://github.com/morpheus65535/bazarr
314 lines
6.8 KiB
Python
314 lines
6.8 KiB
Python
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
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# Copyright (C) 2001-2017 Nominum, Inc.
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#
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# Permission to use, copy, modify, and distribute this software and its
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# documentation for any purpose with or without fee is hereby granted,
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# provided that the above copyright notice and this permission notice
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# appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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"""DNS Rdata Types."""
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import dns.enum
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import dns.exception
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class RdataType(dns.enum.IntEnum):
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"""DNS Rdata Type"""
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TYPE0 = 0
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NONE = 0
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A = 1
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NS = 2
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MD = 3
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MF = 4
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CNAME = 5
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SOA = 6
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MB = 7
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MG = 8
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MR = 9
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NULL = 10
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WKS = 11
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PTR = 12
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HINFO = 13
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MINFO = 14
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MX = 15
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TXT = 16
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RP = 17
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AFSDB = 18
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X25 = 19
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ISDN = 20
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RT = 21
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NSAP = 22
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NSAP_PTR = 23
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SIG = 24
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KEY = 25
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PX = 26
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GPOS = 27
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AAAA = 28
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LOC = 29
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NXT = 30
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SRV = 33
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NAPTR = 35
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KX = 36
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CERT = 37
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A6 = 38
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DNAME = 39
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OPT = 41
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APL = 42
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DS = 43
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SSHFP = 44
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IPSECKEY = 45
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RRSIG = 46
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NSEC = 47
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DNSKEY = 48
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DHCID = 49
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NSEC3 = 50
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NSEC3PARAM = 51
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TLSA = 52
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SMIMEA = 53
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HIP = 55
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NINFO = 56
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CDS = 59
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CDNSKEY = 60
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OPENPGPKEY = 61
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CSYNC = 62
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ZONEMD = 63
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SVCB = 64
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HTTPS = 65
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SPF = 99
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UNSPEC = 103
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NID = 104
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L32 = 105
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L64 = 106
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LP = 107
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EUI48 = 108
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EUI64 = 109
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TKEY = 249
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TSIG = 250
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IXFR = 251
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AXFR = 252
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MAILB = 253
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MAILA = 254
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ANY = 255
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URI = 256
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CAA = 257
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AVC = 258
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AMTRELAY = 260
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TA = 32768
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DLV = 32769
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@classmethod
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def _maximum(cls):
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return 65535
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@classmethod
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def _short_name(cls):
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return "type"
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@classmethod
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def _prefix(cls):
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return "TYPE"
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@classmethod
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def _unknown_exception_class(cls):
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return UnknownRdatatype
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_registered_by_text = {}
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_registered_by_value = {}
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_metatypes = {RdataType.OPT}
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_singletons = {RdataType.SOA, RdataType.NXT, RdataType.DNAME,
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RdataType.NSEC, RdataType.CNAME}
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class UnknownRdatatype(dns.exception.DNSException):
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"""DNS resource record type is unknown."""
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def from_text(text):
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"""Convert text into a DNS rdata type value.
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The input text can be a defined DNS RR type mnemonic or
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instance of the DNS generic type syntax.
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For example, "NS" and "TYPE2" will both result in a value of 2.
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Raises ``dns.rdatatype.UnknownRdatatype`` if the type is unknown.
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Raises ``ValueError`` if the rdata type value is not >= 0 and <= 65535.
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Returns an ``int``.
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"""
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text = text.upper().replace('-', '_')
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try:
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return RdataType.from_text(text)
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except UnknownRdatatype:
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registered_type = _registered_by_text.get(text)
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if registered_type:
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return registered_type
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raise
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def to_text(value):
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"""Convert a DNS rdata type value to text.
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If the value has a known mnemonic, it will be used, otherwise the
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DNS generic type syntax will be used.
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Raises ``ValueError`` if the rdata type value is not >= 0 and <= 65535.
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Returns a ``str``.
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"""
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text = RdataType.to_text(value)
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if text.startswith("TYPE"):
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registered_text = _registered_by_value.get(value)
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if registered_text:
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text = registered_text
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return text.replace('_', '-')
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def is_metatype(rdtype):
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"""True if the specified type is a metatype.
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*rdtype* is an ``int``.
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The currently defined metatypes are TKEY, TSIG, IXFR, AXFR, MAILA,
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MAILB, ANY, and OPT.
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Returns a ``bool``.
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"""
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return (256 > rdtype >= 128) or rdtype in _metatypes
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def is_singleton(rdtype):
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"""Is the specified type a singleton type?
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Singleton types can only have a single rdata in an rdataset, or a single
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RR in an RRset.
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The currently defined singleton types are CNAME, DNAME, NSEC, NXT, and
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SOA.
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*rdtype* is an ``int``.
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Returns a ``bool``.
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"""
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if rdtype in _singletons:
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return True
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return False
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# pylint: disable=redefined-outer-name
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def register_type(rdtype, rdtype_text, is_singleton=False):
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"""Dynamically register an rdatatype.
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*rdtype*, an ``int``, the rdatatype to register.
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*rdtype_text*, a ``str``, the textual form of the rdatatype.
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*is_singleton*, a ``bool``, indicating if the type is a singleton (i.e.
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RRsets of the type can have only one member.)
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"""
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_registered_by_text[rdtype_text] = rdtype
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_registered_by_value[rdtype] = rdtype_text
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if is_singleton:
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_singletons.add(rdtype)
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### BEGIN generated RdataType constants
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TYPE0 = RdataType.TYPE0
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NONE = RdataType.NONE
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A = RdataType.A
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NS = RdataType.NS
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MD = RdataType.MD
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MF = RdataType.MF
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CNAME = RdataType.CNAME
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SOA = RdataType.SOA
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MB = RdataType.MB
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MG = RdataType.MG
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MR = RdataType.MR
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NULL = RdataType.NULL
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WKS = RdataType.WKS
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PTR = RdataType.PTR
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HINFO = RdataType.HINFO
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MINFO = RdataType.MINFO
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MX = RdataType.MX
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TXT = RdataType.TXT
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RP = RdataType.RP
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AFSDB = RdataType.AFSDB
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X25 = RdataType.X25
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ISDN = RdataType.ISDN
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RT = RdataType.RT
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NSAP = RdataType.NSAP
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NSAP_PTR = RdataType.NSAP_PTR
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SIG = RdataType.SIG
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KEY = RdataType.KEY
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PX = RdataType.PX
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GPOS = RdataType.GPOS
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AAAA = RdataType.AAAA
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LOC = RdataType.LOC
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NXT = RdataType.NXT
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SRV = RdataType.SRV
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NAPTR = RdataType.NAPTR
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KX = RdataType.KX
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CERT = RdataType.CERT
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A6 = RdataType.A6
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DNAME = RdataType.DNAME
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OPT = RdataType.OPT
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APL = RdataType.APL
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DS = RdataType.DS
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SSHFP = RdataType.SSHFP
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IPSECKEY = RdataType.IPSECKEY
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RRSIG = RdataType.RRSIG
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NSEC = RdataType.NSEC
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DNSKEY = RdataType.DNSKEY
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DHCID = RdataType.DHCID
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NSEC3 = RdataType.NSEC3
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NSEC3PARAM = RdataType.NSEC3PARAM
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TLSA = RdataType.TLSA
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SMIMEA = RdataType.SMIMEA
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HIP = RdataType.HIP
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NINFO = RdataType.NINFO
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CDS = RdataType.CDS
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CDNSKEY = RdataType.CDNSKEY
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OPENPGPKEY = RdataType.OPENPGPKEY
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CSYNC = RdataType.CSYNC
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ZONEMD = RdataType.ZONEMD
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SVCB = RdataType.SVCB
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HTTPS = RdataType.HTTPS
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SPF = RdataType.SPF
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UNSPEC = RdataType.UNSPEC
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NID = RdataType.NID
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L32 = RdataType.L32
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L64 = RdataType.L64
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LP = RdataType.LP
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EUI48 = RdataType.EUI48
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EUI64 = RdataType.EUI64
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TKEY = RdataType.TKEY
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TSIG = RdataType.TSIG
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IXFR = RdataType.IXFR
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AXFR = RdataType.AXFR
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MAILB = RdataType.MAILB
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MAILA = RdataType.MAILA
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ANY = RdataType.ANY
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URI = RdataType.URI
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CAA = RdataType.CAA
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AVC = RdataType.AVC
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AMTRELAY = RdataType.AMTRELAY
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TA = RdataType.TA
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DLV = RdataType.DLV
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### END generated RdataType constants
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