+++ /dev/null
-# Copyright (C) 2001-2007, 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 Types.
-
-@var _by_text: The rdata type textual name to value mapping
-@type _by_text: dict
-@var _by_value: The rdata type value to textual name mapping
-@type _by_value: dict
-@var _metatypes: If an rdatatype is a metatype, there will be a mapping
-whose key is the rdatatype value and whose value is True in this dictionary.
-@type _metatypes: dict
-@var _singletons: If an rdatatype is a singleton, there will be a mapping
-whose key is the rdatatype value and whose value is True in this dictionary.
-@type _singletons: dict"""
-
-import re
-
-import dns.exception
-
-NONE = 0
-A = 1
-NS = 2
-MD = 3
-MF = 4
-CNAME = 5
-SOA = 6
-MB = 7
-MG = 8
-MR = 9
-NULL = 10
-WKS = 11
-PTR = 12
-HINFO = 13
-MINFO = 14
-MX = 15
-TXT = 16
-RP = 17
-AFSDB = 18
-X25 = 19
-ISDN = 20
-RT = 21
-NSAP = 22
-NSAP_PTR = 23
-SIG = 24
-KEY = 25
-PX = 26
-GPOS = 27
-AAAA = 28
-LOC = 29
-NXT = 30
-SRV = 33
-NAPTR = 35
-KX = 36
-CERT = 37
-A6 = 38
-DNAME = 39
-OPT = 41
-APL = 42
-DS = 43
-SSHFP = 44
-IPSECKEY = 45
-RRSIG = 46
-NSEC = 47
-DNSKEY = 48
-DHCID = 49
-NSEC3 = 50
-NSEC3PARAM = 51
-HIP = 55
-SPF = 99
-UNSPEC = 103
-TKEY = 249
-TSIG = 250
-IXFR = 251
-AXFR = 252
-MAILB = 253
-MAILA = 254
-ANY = 255
-TA = 32768
-DLV = 32769
-
-_by_text = {
- 'NONE' : NONE,
- 'A' : A,
- 'NS' : NS,
- 'MD' : MD,
- 'MF' : MF,
- 'CNAME' : CNAME,
- 'SOA' : SOA,
- 'MB' : MB,
- 'MG' : MG,
- 'MR' : MR,
- 'NULL' : NULL,
- 'WKS' : WKS,
- 'PTR' : PTR,
- 'HINFO' : HINFO,
- 'MINFO' : MINFO,
- 'MX' : MX,
- 'TXT' : TXT,
- 'RP' : RP,
- 'AFSDB' : AFSDB,
- 'X25' : X25,
- 'ISDN' : ISDN,
- 'RT' : RT,
- 'NSAP' : NSAP,
- 'NSAP-PTR' : NSAP_PTR,
- 'SIG' : SIG,
- 'KEY' : KEY,
- 'PX' : PX,
- 'GPOS' : GPOS,
- 'AAAA' : AAAA,
- 'LOC' : LOC,
- 'NXT' : NXT,
- 'SRV' : SRV,
- 'NAPTR' : NAPTR,
- 'KX' : KX,
- 'CERT' : CERT,
- 'A6' : A6,
- 'DNAME' : DNAME,
- 'OPT' : OPT,
- 'APL' : APL,
- 'DS' : DS,
- 'SSHFP' : SSHFP,
- 'IPSECKEY' : IPSECKEY,
- 'RRSIG' : RRSIG,
- 'NSEC' : NSEC,
- 'DNSKEY' : DNSKEY,
- 'DHCID' : DHCID,
- 'NSEC3' : NSEC3,
- 'NSEC3PARAM' : NSEC3PARAM,
- 'HIP' : HIP,
- 'SPF' : SPF,
- 'UNSPEC' : UNSPEC,
- 'TKEY' : TKEY,
- 'TSIG' : TSIG,
- 'IXFR' : IXFR,
- 'AXFR' : AXFR,
- 'MAILB' : MAILB,
- 'MAILA' : MAILA,
- 'ANY' : ANY,
- 'TA' : TA,
- 'DLV' : DLV,
- }
-
-# We construct the inverse mapping programmatically to ensure that we
-# cannot make any mistakes (e.g. omissions, cut-and-paste errors) that
-# would cause the mapping not to be true inverse.
-
-_by_value = dict([(y, x) for x, y in _by_text.iteritems()])
-
-
-_metatypes = {
- OPT : True
- }
-
-_singletons = {
- SOA : True,
- NXT : True,
- DNAME : True,
- NSEC : True,
- # CNAME is technically a singleton, but we allow multiple CNAMEs.
- }
-
-_unknown_type_pattern = re.compile('TYPE([0-9]+)$', re.I);
-
-class UnknownRdatatype(dns.exception.DNSException):
- """Raised if a type is unknown."""
- pass
-
-def from_text(text):
- """Convert text into a DNS rdata type value.
- @param text: the text
- @type text: string
- @raises dns.rdatatype.UnknownRdatatype: the type is unknown
- @raises ValueError: the rdata type value is not >= 0 and <= 65535
- @rtype: int"""
-
- value = _by_text.get(text.upper())
- if value is None:
- match = _unknown_type_pattern.match(text)
- if match == None:
- raise UnknownRdatatype
- value = int(match.group(1))
- if value < 0 or value > 65535:
- raise ValueError("type must be between >= 0 and <= 65535")
- return value
-
-def to_text(value):
- """Convert a DNS rdata type to text.
- @param value: the rdata type value
- @type value: int
- @raises ValueError: the rdata type value is not >= 0 and <= 65535
- @rtype: string"""
-
- if value < 0 or value > 65535:
- raise ValueError("type must be between >= 0 and <= 65535")
- text = _by_value.get(value)
- if text is None:
- text = 'TYPE' + `value`
- return text
-
-def is_metatype(rdtype):
- """True if the type is a metatype.
- @param rdtype: the type
- @type rdtype: int
- @rtype: bool"""
-
- if rdtype >= TKEY and rdtype <= ANY or _metatypes.has_key(rdtype):
- return True
- return False
-
-def is_singleton(rdtype):
- """True if the type is a singleton.
- @param rdtype: the type
- @type rdtype: int
- @rtype: bool"""
-
- if _singletons.has_key(rdtype):
- return True
- return False
git.samba.org / bbaumbach / samba-autobuild / .git / blobdiff