/usr/lib/python3/dist-packages/twisted/names/__pycache__
Edit: /usr/lib/python3/dist-packages/twisted/names/__pycache__/dns.cpython-310.pyc (98772B)
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DNS protocol implementation.
Future Plans:
- Get rid of some toplevels, maybe.
N)contextmanager)BytesIO)chain)Optional SupportsIntUnion) Attribute Interface implementer)deferprotocol)CannotListenError)failurelog randbytesutil)cmp
comparable nativeString)e
IEncodableIRecordIEncodableRecordAA6AAAAAFSDBCNAMEDNAMEHINFOMAILAMAILBMBMDMFMGMINFOMRMXNAPTRNSNULLOPTPTRRPSOASPFSRVTXTSSHFPTSIGWKSANYCHCSHSIN ALL_RECORDSAXFRIXFREFORMATENAMEENOTIMPEREFUSEDESERVER EBADVERSIONEBADSIGEBADKEYEBADTIMERecord_A Record_A6 Record_AAAA Record_AFSDB Record_CNAME Record_DNAME Record_HINFO Record_MB Record_MD Record_MF Record_MG Record_MINFO Record_MR Record_MX Record_NAPTR Record_NS Record_NULL
Record_PTR Record_RP
Record_SOA
Record_SPF
Record_SRV Record_SSHFP Record_TSIG
Record_TXT
Record_WKS
UnknownRecord
QUERY_CLASSES QUERY_TYPES REV_CLASSES REV_TYPES EXT_QUERIESCharstrMessageNameQueryRRHeader SimpleRecordDNSDatagramProtocolDNSMixin DNSProtocolOK
OP_INVERSE OP_NOTIFYOP_QUERY OP_STATUS OP_UPDATEPORTAuthoritativeDomainErrorDNSDecodeErrorDNSQueryTimeoutError DomainErrorc C s
t | gS )z
Construct a bytes object representing a single byte with the given
ordinal value.
@type ordinal: L{int}
@rtype: L{bytes}
bytes)ordinal r} 3/usr/lib/python3/dist-packages/twisted/names/dns.py
_ord2bytes s
r c C s t | dd S )z
Represent a mostly textful bytes object in a way suitable for
presentation to an end user.
@param bytes: The bytes to represent.
@rtype: L{str}
N)reprrz r} r} r~
_nicebytes s r c C s d ddd | D S )z
Represent a list of mostly textful bytes objects in a way suitable for
presentation to an end user.
@param list: The list of bytes to represent.
@rtype: L{str}
z[{}], c S s g | ]}t |qS r} )r ).0br} r} r~
s z"_nicebyteslist..)formatjoin)listr} r} r~ _nicebyteslist s r c C s t dtjdddd S )z
Wrapper around L{twisted.python.randbytes.RandomFactory.secureRandom} to
return 2 random bytes.
@rtype: L{bytes}
H T)fallbackr )structunpackr secureRandomr} r} r} r~ randomSource s r 5 r ! # & ' ) , c r r) r" r# r r. r! r$ r& r* r4 r, r r% r' r1 r- r r r0 r( r r r+ r2 r/ TKEYr3 r< r; r r r: c C i | ]\}}||qS r} r} r kvr} r} r~
r r9 r7 r6 r8 r5 c C r r} r} r r} r} r~ r r c @ s e Zd ZdZedZdS )r z0
A single entry in a zone of authority.
z,An indicator of what kind of record this is.N)__name__
__module__ __qualname____doc__r TYPEr} r} r} r~ r s r )rv rx ry c C s2 | dv rdgS | d}|d dkr|d |S )a2
Split a domain name into its constituent labels.
@type name: L{bytes}
@param name: A fully qualified domain name (with or without a
trailing dot).
@return: A L{list} of labels ending with an empty label
representing the DNS root zone.
@rtype: L{list} of L{bytes}
) .r r )splitappend)namelabelsr} r} r~
_nameToLabels- s
r c C s> t | tr
| d} t | ts tdtjtj| t| | S )a
Coerce a domain name string to bytes.
L{twisted.names} represents domain names as L{bytes}, but many interfaces
accept L{bytes} or a text string (L{unicode} on Python 2, L{str} on Python
3). This function coerces text strings using IDNA encoding --- see
L{encodings.idna}.
Note that DNS is I{case insensitive} but I{case preserving}. This function
doesn't normalize case, so you'll still need to do that whenever comparing
the strings it returns.
@param domain: A domain name. If passed as a text string it will be
C{idna} encoded.
@type domain: L{bytes} or L{str}
@returns: L{bytes} suitable for network transmission.
@rtype: L{bytes}
@since: Twisted 20.3.0
idnaz+Expected {} or {} but found {!r} of type {})
isinstancestrencoder{ TypeErrorr r type)domainr} r} r~ domainStringA s
r c C s. t | }t | }|t| d |kS )a)
Test whether C{descendantName} is equal to or is a I{subdomain} of
C{ancestorName}.
The names are compared case-insensitively.
The names are treated as byte strings containing one or more
DNS labels separated by B{.}.
C{descendantName} is considered equal if its sequence of labels
exactly matches the labels of C{ancestorName}.
C{descendantName} is considered a I{subdomain} if its sequence of
labels ends with the labels of C{ancestorName}.
@type descendantName: L{bytes}
@param descendantName: The DNS subdomain name.
@type ancestorName: L{bytes}
@param ancestorName: The DNS parent or ancestor domain name.
@return: C{True} if C{descendantName} is equal to or if it is a
subdomain of C{ancestorName}. Otherwise returns C{False}.
N)r lowerlen)descendantName ancestorNamedescendantLabelsancestorLabelsr} r} r~ _isSubdomainOfb s r c C s d}t | tr | d} t | trF| } |D ]\}}| |r0tt| dd | S qzt| } W | S t yE t d| w | S )aE
Parse a string description of an interval into an integer number of seconds.
@param s: An interval definition constructed as an interval duration
followed by an interval unit. An interval duration is a base ten
representation of an integer. An interval unit is one of the following
letters: S (seconds), M (minutes), H (hours), D (days), W (weeks), or Y
(years). For example: C{"3S"} indicates an interval of three seconds;
C{"5D"} indicates an interval of five days. Alternatively, C{s} may be
any non-string and it will be returned unmodified.
@type s: text string (L{bytes} or L{str}) for parsing; anything else
for passthrough.
@return: an L{int} giving the interval represented by the string C{s}, or
whatever C{s} is if it is not a string.
))Sr )M< )r i )DiQ )Wi: )Yi3asciiNr z!Invalid time interval specifier: )
r r{ decoder upperstripendswithintfloat
ValueError)ssuffixessuffmultr} r} r~ str2time s
r c C s | |}t||k r
t|S N)readr EOFError)filelbuffr} r} r~
readPrecisely s
r c @ e Zd ZdZdS )rw zl
Raised when a DNS message cannot be decoded because it violates a
protocol-level safety limit.
Nr r r r r} r} r} r~ rw rw c @ s2 e Zd ZdZdZd deddfddZd d d
ZdS )
_DecodeContexta
Mutable state shared between the L{IEncodable} decoders invoked while
reading a single DNS message.
The primary purpose is to bound the total number of compression-pointer
jumps taken across every name in the message, defending against packets
that fan out thousands of records pointing to deeply chained pointers.
This class is private. External callers must not rely on it; the
per-message scope is installed and torn down by L{Message.decode}
through L{_decodeContextVar}.
@ivar jumps: The number of compression pointers followed so far.
@ivar maxJumps: The inclusive upper bound on L{jumps}. Exceeding it
causes L{registerJump} to raise L{DNSDecodeError}.
jumpsmaxJumps r returnNc C s d| _ || _d S )Nr r )selfr r} r} r~ __init__ s
z_DecodeContext.__init__c C s0 | j d7 _ | j | jkrtd| j ddS )aq
Record that a compression pointer has been followed.
The check is performed before any further bytes are read so the
caller fails fast as soon as the aggregate limit is breached, even
if additional records remain in the buffer.
@raise DNSDecodeError: if the cumulative number of jumps exceeds
L{maxJumps}.
r zCToo many compression pointers while decoding DNS message (limit is )N)r r rw r r} r} r~ registerJump s z_DecodeContext.registerJump)r )r N)r r r r __slots__r r r r} r} r} r~ r s
r _dnsDecodeContext)default_decodeContextVarcontextc c s0 t | }z | V W t | dS t | w )ah
Install C{context} on L{_decodeContextVar} for the duration of the
C{with} block and restore the previous value on exit.
This wraps the L{contextvars.ContextVar.set} / L{contextvars.ContextVar.reset}
token dance so call sites can use a plain C{with} statement.
@param context: The L{_DecodeContext} to install as the active context.
N)r setreset)r tokenr} r} r~ _installDecodeContext s
r c @ s$ e Zd ZdZdddZdddZdS )r z
Interface for something which can be encoded to and decoded
to the DNS wire format.
A binary-mode file object (such as L{io.BytesIO}) is used as a buffer when
encoding or decoding.
Nc C dS )a
Write a representation of this object to the given
file object.
@type strio: File-like object
@param strio: The buffer to write to. It must have a C{tell()} method.
@type compDict: L{dict} of L{bytes} to L{int} r L{None}
@param compDict: A mapping of names to byte offsets that have already
been written to the buffer, which may be used for compression (see RFC
1035 section 4.1.4). When L{None}, encode without compression.
Nr} )striocompDictr} r} r~ r zIEncodable.encodec C r )a
Reconstruct an object from data read from the given
file object.
@type strio: File-like object
@param strio: A seekable buffer from which bytes may be read.
@type length: L{int} or L{None}
@param length: The number of bytes in this RDATA field. Most
implementations can ignore this value. Only in the case of
records similar to TXT where the total length is in no way
encoded in the data is it necessary.
Nr} )r lengthr} r} r~ r r zIEncodable.decoder )r r r r r r r} r} r} r~ r s
r c @ r )r z`
Interface for DNS records that can be encoded and decoded.
@since: Twisted 21.2.0
Nr r} r} r} r~ r ' r r c @ sR e Zd ZdddZdddZdddZd ed
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fddZ dS )rf r c C s" t |ts t|d|| _d S )Nz is not a byte string)r r{ r string)r r r} r} r~ r 1 s
zCharstr.__init__Nc C s* | j }t|}|t| || dS )z
Encode this Character string into the appropriate byte format.
@type strio: file
@param strio: The byte representation of this Charstr will be written
to this file.
N)r r writer )r r r r indr} r} r~ r 6 s zCharstr.encodec C s$ d| _ tt|d}t||| _ dS )a
Decode a byte string into this Charstr.
@type strio: file
@param strio: Bytes will be read from this file until the full string
is decoded.
@raise EOFError: Raised when there are not enough bytes available from
C{strio}.
r r N)r ordr )r r r r r} r} r~ r C s zCharstr.decodeotherr c C s t |tr | j|jkS tS r )r rf r NotImplementedr r r} r} r~ __eq__R s
zCharstr.__eq__c C
t | jS r )hashr r r} r} r~ __hash__W
zCharstr.__hash__c C r )zI
Represent this L{Charstr} instance by its string value.
)r r r r} r} r~ __str__Z
zCharstr.__str__r r ) r r r r r r objectboolr r r r r} r} r} r~ rf / s
rf c @ sd e Zd ZU dZdZeed< dddZddd Zdd
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A name in the domain name system, made up of multiple labels. For example,
I{twistedmatrix.com}.
@ivar name: A byte string giving the name.
@type name: L{bytes}
@ivar maxCompressionPointers: Per-message cap on the total number of
compression-pointer dereferences L{decode} will follow before
raising L{DNSDecodeError}. Defaults to C{1000}. Override it on
a subclass or individual instance to tune the trade-off between
tolerance for legitimately verbose messages and resistance to
denial-of-service attacks.
r maxCompressionPointersr c C s t || _dS )zM
@param name: A name.
@type name: L{bytes} or L{str}
N)r r )r r r} r} r~ r t s z
Name.__init__Nc C s | j }|rT|dur%||v r |tdd|| B dS | tj ||< |d}|dkr>|d| ||d d }}n|}d}t|}|t | || |s|d dS )a
Encode this Name into the appropriate byte format.
@type strio: file
@param strio: The byte representation of this Name will be written to
this file.
@type compDict: dict
@param compDict: dictionary of Names that have already been encoded
and whose addresses may be backreferenced by this Name (for the purpose
of reducing the message size).
N!Hi r r r )
r r r packtellrg
headerSizefindr r )r r r r r labelr} r} r~ r { s"
z Name.encodec C s t }|du rt| jd}t }d| _d} tt|d}|dkr-|dkr+|| dS |d? dkr_|d@ d > tt|dB }| ||v rLt
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| | |dkrY| }|| qt||}| jdkrm|| _n| jd | | _q) a3
Decode a byte string into this Name.
When invoked from L{Message.decode}, a shared compression-pointer
counter is picked up transparently from the private
L{_decodeContextVar}. Standalone callers get a fresh per-call
counter seeded from L{maxCompressionPointers}, so existing code
keeps working unchanged while still being protected against
pathological inputs.
@type strio: file
@param strio: Bytes will be read from this file until the full Name
is decoded.
@type length: L{int} or L{None}
@param length: Present for compatibility with the L{IEncodable}
interface; ignored by this decoder.
@raise EOFError: Raised when there are not enough bytes available
from C{strio}.
@raise ValueError: Raised when the name cannot be decoded because
it contains a compression loop.
@raise DNSDecodeError: Raised when the cumulative number of
compression-pointer jumps exceeds the configured limit.
Nr r r r r r ? z Compression loop in encoded namer )
r getr r r r r r seekr r addr ) r r r r visitedoffr new_offr r} r} r~ r s6
z Name.decoder r c C s" t |tr| j |j kS tS r )r rh r r r r r} r} r~ r s
z Name.__eq__c C r r r r r r} r} r~ r r
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Name.__hash__c C r )zE
Represent this L{Name} instance by its string name.
r r r r} r} r~ r r z Name.__str__r
r )r r r r r r __annotations__r r r r r r r r r r} r} r} r~ rh a s
!8rh c @ sv e Zd ZdZdeefdeeef de de fddZ
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Represent a single DNS query.
@ivar name: The name about which this query is requesting information.
@type name: L{Name}
@ivar type: The query type.
@type type: L{int}
@ivar cls: The query class.
@type cls: L{int}
r r r clsc C s t || _|| _|| _dS )z
@type name: L{bytes} or L{str}
@param name: See L{Query.name}
@type type: L{int}
@param type: The query type.
@type cls: L{int}
@param cls: The query class.
N)rh r r r$ r r r r$ r} r} r~ r s
zQuery.__init__Nc C s* | j || |td| j| j d S N!HH)r r r r r r r$ r r r r} r} r~ r s z Query.encodec C s. | j | t|d}td|\| _| _d S )Nr r' )r r r r r r r$ )r r r r r} r} r~ r s
z Query.decodec C s t | jj | j| jfS r )r r r r r$ r r} r} r~ r s zQuery.__hash__c C s< t |tr t| jj | j| jf|jj |j|jfS tS r )r ri r r r r r$ r r r} r} r~ __cmp__ s
z
Query.__cmp__r c C sL t | jt| jd| j }t| jd| j }d| j d| d| dS )N UNKNOWN (%d)z)rb r r re ra r$ r r tcr} r} r~ r s
z
Query.__str__c C s d| j j d| jd| jdS )NzQuery(r r )r r r$ r r} r} r~ __repr__ zQuery.__repr__r )r r r r r r9 r r{ r r r r r r r) r r0 r} r} r} r~ ri s &
ri c @ sz e Zd ZdZddd fddddd d
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_OPTHeaderaZ
An OPT record header.
@ivar name: The DNS name associated with this record. Since this
is a pseudo record, the name is always an L{Name} instance
with value b'', which represents the DNS root zone. This
attribute is a readonly property.
@ivar type: The DNS record type. This is a fixed value of 41
C{dns.OPT} for OPT Record. This attribute is a readonly
property.
@see: L{_OPTHeader.__init__} for documentation of other public
instance attributes.
@see: U{https://tools.ietf.org/html/rfc6891#section-6.1.2}
@since: 13.2
r c C r r r" )nr} r} r~ 8 s
z_OPTHeader.r udpPayloadSize
extendedRCODEversiondnssecOKoptions)r r r5 r6 r7 r8 r9 r FNc C s. || _ || _|| _|| _|du rg }|| _dS )a
@type udpPayloadSize: L{int}
@param udpPayloadSize: The number of octets of the largest UDP
payload that can be reassembled and delivered in the
requestor's network stack.
@type extendedRCODE: L{int}
@param extendedRCODE: Forms the upper 8 bits of extended
12-bit RCODE (together with the 4 bits defined in
[RFC1035]. Note that EXTENDED-RCODE value 0 indicates
that an unextended RCODE is in use (values 0 through 15).
@type version: L{int}
@param version: Indicates the implementation level of the
setter. Full conformance with this specification is
indicated by version C{0}.
@type dnssecOK: L{bool}
@param dnssecOK: DNSSEC OK bit as defined by [RFC3225].
@type options: L{list}
@param options: A L{list} of 0 or more L{_OPTVariableOption}
instances.
Nr5 r6 r7 r8 r9 )r r5 r6 r7 r8 r9 r} r} r~ r K s
z_OPTHeader.__init__c C s t dS )a/
A readonly property for accessing the C{name} attribute of
this record.
@return: The DNS name associated with this record. Since this
is a pseudo record, the name is always an L{Name} instance
with value b'', which represents the DNS root zone.
r )rh r r} r} r~ r t s
z_OPTHeader.namec C s t S )z
A readonly property for accessing the C{type} attribute of
this record.
@return: The DNS record type. This is a fixed value of 41
(C{dns.OPT} for OPT Record.
)r+ r r} r} r~ r s z_OPTHeader.typec C sh t }| jD ]}|| q| }t| jj| j| j| jd> | j d> B | j
d> B t |d|| dS )a
Encode this L{_OPTHeader} instance to bytes.
@type strio: file
@param strio: the byte representation of this L{_OPTHeader}
will be written to this file.
@type compDict: L{dict} or L{None}
@param compDict: A dictionary of backreference addresses that
have already been written to this stream and that may
be used for DNS name compression.
r )r r r$ ttlpayloadN) r r9 r getvaluerj r r r5 r6 r7 r8 r` )r r r r o optionBytesr} r} r~ r s
z_OPTHeader.encodec C sX t }||| tt||j|_| |}| jD ]}|dvr)t| |t || qdS )a
Decode bytes into an L{_OPTHeader} instance.
@type strio: file
@param strio: Bytes will be read from this file until the full
L{_OPTHeader} is decoded.
@type length: L{int} or L{None}
@param length: Not used.
)r r N)
rj r r` r rdlengthr? fromRRHeadercompareAttributessetattrgetattr)r r r h newOptHeaderattrNamer} r} r~ r s
z_OPTHeader.decodec C s d}|j dur.g }t|j j}t|j j}| |k r.t }|| || | |k s| |j|j d? |j d? d@ |j d@ d? |dS )ai
A classmethod for constructing a new L{_OPTHeader} from the
attributes and payload of an existing L{RRHeader} instance.
@type rrHeader: L{RRHeader}
@param rrHeader: An L{RRHeader} instance containing an
L{UnknownRecord} payload.
@return: An instance of L{_OPTHeader}.
@rtype: L{_OPTHeader}
Nr< r r i r= r; )
r? r datar r _OPTVariableOptionr r r$ r> )r$ rrHeaderr9 optionsBytesoptionsBytesLengthrA r} r} r~ rD s"
z_OPTHeader.fromRRHeader)r: r r FNr )r r r r showAttributesrE r propertyr r r r classmethodrD r} r} r} r~ r2 ! s2
)
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A class to represent OPT record variable options.
@see: L{_OPTVariableOption.__init__} for documentation of public
instance attributes.
@see: U{https://tools.ietf.org/html/rfc6891#section-6.1.2}
@since: 13.2
coderK rS rK r' r r c C s || _ || _dS )z
@type code: L{int}
@param code: The option code
@type data: L{bytes}
@param data: The option data
NrT )r rS rK r} r} r~ r s
z_OPTVariableOption.__init__Nc C s( | t| j| jt| j| j dS )a
Encode this L{_OPTVariableOption} to bytes.
@type strio: file
@param strio: the byte representation of this
L{_OPTVariableOption} will be written to this file.
@type compDict: L{dict} or L{None}
@param compDict: A dictionary of backreference addresses that
have already been written to this stream and that may
be used for DNS name compression.
N)r r r _fmtrS r rK r( r} r} r~ r s (
z_OPTVariableOption.encodec C s: t | j}t||}t | j|\| _}t||| _dS )a
Decode bytes into an L{_OPTVariableOption} instance.
@type strio: file
@param strio: Bytes will be read from this file until the full
L{_OPTVariableOption} is decoded.
@type length: L{int} or L{None}
@param length: Not used.
N)r calcsizerU r r rS rK )r r r r r r} r} r~ r s
z_OPTVariableOption.decode)r r r ) r r r r r rP rE rU r r r r} r} r} r~ rL s
rL c
@ s e Zd ZdZdZdZdZdZdee dddfde
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A resource record header.
@cvar fmt: L{str} specifying the byte format of an RR.
@ivar name: The name about which this reply contains information.
@type name: L{Name}
@ivar type: The query type of the original request.
@type type: L{int}
@ivar cls: The query class of the original request.
@ivar ttl: The time-to-live for this record.
@type ttl: L{int}
@ivar payload: The record described by this header.
@type payload: L{IEncodableRecord} or L{None}
@ivar auth: A L{bool} indicating whether this C{RRHeader} was parsed from
an authoritative message.
)r r r$ r> r? authz!HHIHNr r Fr r r$ r> r? rW c C s |du rdn|j }|dur!||kr!tdt||t||f t|}|dk r-tdt|| _|| _|| _|| _ || _
|| _ dS )a
@type name: L{bytes} or L{str}
@param name: See L{RRHeader.name}
@type type: L{int}
@param type: The query type.
@type cls: L{int}
@param cls: The query class.
@type ttl: L{int}
@param ttl: Time to live for this record. This will be
converted to an L{int}.
@type payload: L{IEncodableRecord} or L{None}
@param payload: An optional Query Type specific data object.
@raises TypeError: if the ttl cannot be converted to an L{int}.
@raises ValueError: if the ttl is negative.
@raises ValueError: if the payload type is not equal to the C{type}
argument.
Nz0Payload type (%s) does not match given type (%s)r zTTL cannot be negative) r r rb r r rh r r r$ r> r? rW ) r r r r$ r> r? rW payloadType integralTTLr} r} r~ r : s$
zRRHeader.__init__c C s | j || |t| j| j| j| jd | j rD|
}| j || |
}| |d d |td|| | |d d S d S )Nr r r ) r r r r r fmtr r$ r> r? r r )r r r prefixaftr} r} r~ r o s zRRHeader.encodec C sH | j | t| j}t||}t| j|}|\| _| _| _ | _
d S r ) r r r rV rZ r r r r$ r> rC )r r r r r rr} r} r~ r z s
zRRHeader.decodec C s | j S r rW r r} r} r~ isAuthoritative s zRRHeader.isAuthoritativer c C sR t | jt| jd| j }t| jd| j }d| j||| j| jr%dp&df S )Nr* z-TrueFalse) rb r r re ra r$ r r> rW r- r} r} r~ r s zRRHeader.__str__r )r r r r rE rZ rC cachedResponser r9 r r{ r r r r r r r r r r_ r r0 r} r} r} r~ rj s<
5
rj c @ sT e Zd ZU dZdZdZdZee e d< dZ
dddZ dd d
Z dd d Z
d
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A Resource Record which consists of a single RFC 1035 domain-name.
@type name: L{Name}
@ivar name: The name associated with this record.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
)r r %sr> )r r> Nr r c C s t || _t|| _dS )z^
@param name: See L{SimpleRecord.name}
@type name: L{bytes} or L{str}
N)rh r r r> )r r r> r} r} r~ r s
zSimpleRecord.__init__c C s | j || d S r )r r r( r} r} r~ r s zSimpleRecord.encodec C s t | _| j| d S r )rh r r r r r r} r} r~ r s zSimpleRecord.decodec C r r r! r r} r} r~ r r
zSimpleRecord.__hash__r Nr )r r r r rP rE r r r r# r r r r r r} r} r} r~ rk s
rk c @ e Zd ZdZeZdZdS )rU z&
An authoritative nameserver.
r) N)r r r r r) r
fancybasenamer} r} r} r~ rU rU c @ rg )rN zX
A mail destination.
This record type is obsolete.
@see: L{Record_MX}
r" N)r r r r r" r rh r} r} r} r~ rN rN c @ rg )rO zV
A mail forwarder.
This record type is obsolete.
@see: L{Record_MX}
r# N)r r r r r# r rh r} r} r} r~ rO rj rO c @ rg )rJ z*
The canonical name for an alias.
r N)r r r r r r rh r} r} r} r~ rJ ri rJ c @ rg )rM zJ
A mailbox domain name.
This is an experimental record type.
r! N)r r r r r! r rh r} r} r} r~ rM rM c @ rg )rP zH
A mail group member.
This is an experimental record type.
r$ N)r r r r r$ r rh r} r} r} r~ rP rk rP c @ rg )rR zN
A mail rename domain name.
This is an experimental record type.
r& N)r r r r r& r rh r} r} r} r~ rR rk rR c @ rg )rW z
A domain name pointer.
r, N)r r r r r, r rh r} r} r} r~ rW ri rW c @ rg )rK a[
A non-terminal DNS name redirection.
This record type provides the capability to map an entire subtree of the
DNS name space to another domain. It differs from the CNAME record which
maps a single node of the name space.
@see: U{http://www.faqs.org/rfcs/rfc2672.html}
@see: U{http://www.faqs.org/rfcs/rfc3363.html}
r N)r r r r r r rh r} r} r} r~ rK s rK c @ s\ e Zd ZdZdZeZdZdddZdddZ dd d
Z
d d Z d
e fddZ
e
Zdd ZdS )rF a
An IPv4 host address.
@type address: L{bytes}
@ivar address: The packed network-order representation of the IPv4 address
associated with this record.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
addressr> N0.0.0.0c C s2 t |tr
|d}t|}|| _t|| _dS )
@type address: L{bytes} or L{str}
@param address: The IPv4 address associated with this record, in
quad-dotted notation.
r N)r r{ r socket inet_atonrm r r> r rm r> r} r} r~ r 4 s
zRecord_A.__init__c C | | j d S r r rm r( r} r} r~ r A zRecord_A.encodec C t |d| _d S )Nr r rm re r} r} r~ r D ru zRecord_A.decodec C r r r rm r r} r} r~ r G r
zRecord_A.__hash__r c C s d| d| j dS )Nz r r} r} r~ r J zRecord_A.__str__c C t | jS r rp inet_ntoarm r r} r} r~ ry O s zRecord_A.dottedQuad)rn Nr )r r r r rE r r rm r r r r r r r0 ry r} r} r} r~ rF ! s
rF c @ sV e Zd ZdZdZdZdZeZ ddd Z dd
d Z
dd d
Z dd Z dS )rY aA
Marks the start of a zone of authority.
This record describes parameters which are shared by all records within a
particular zone.
@type mname: L{Name}
@ivar mname: The domain-name of the name server that was the original or
primary source of data for this zone.
@type rname: L{Name}
@ivar rname: A domain-name which specifies the mailbox of the person
responsible for this zone.
@type serial: L{int}
@ivar serial: The unsigned 32 bit version number of the original copy of
the zone. Zone transfers preserve this value. This value wraps and
should be compared using sequence space arithmetic.
@type refresh: L{int}
@ivar refresh: A 32 bit time interval before the zone should be refreshed.
@type minimum: L{int}
@ivar minimum: The unsigned 32 bit minimum TTL field that should be
exported with any RR from this zone.
@type expire: L{int}
@ivar expire: A 32 bit time value that specifies the upper limit on the
time interval that can elapse before the zone is no longer
authoritative.
@type retry: L{int}
@ivar retry: A 32 bit time interval that should elapse before a failed
refresh should be retried.
@type ttl: L{int}
@ivar ttl: The default TTL to use for records served from this zone.
r. )serialmnamernamerefreshexpireretryminimumr> ))r r rd )r r rd r~ r r r r r> r r Nc C sZ t |t || _| _t|t|| _| _t|t|| _| _t|| _t|| _ dS )z
@param mname: See L{Record_SOA.mname}
@type mname: L{bytes} or L{str}
@param rname: See L{Record_SOA.rname}
@type rname: L{bytes} or L{str}
N)
rh r r r r~ r r r r r> ) r r r r~ r r r r r> r} r} r~ r s
zRecord_SOA.__init__c
C sD | j || | j|| |td| j| j| j| j | j
d S )N!LlllL) r r r r r r r~ r r r r r( r} r} r~ r s zRecord_SOA.encodec C sX t t | _| _| j| | j| tdt|d}|\| _| _| _ | _
| _ d S )Nr ) rh r r r r r r r~ r r r r r r r r] r} r} r~ r s
zRecord_SOA.decodec C t | j| j| j| j| j| jfS r )r r~ r r r r r r r} r} r~ r s zRecord_SOA.__hash__)r r r r r r r Nr )
r r r r rh rE rP r. r r r r r r} r} r} r~ rY S s$ '
rY c @ sN e Zd ZdZdZdefdfZdZeZ dddZ
dd d
Z dd d Z d
d Z
dS )rV z
A null record.
This is an experimental record type.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
r* r? r> )r? r> Nc C || _ t|| _d S r )r? r r> )r r? r> r} r} r~ r zRecord_NULL.__init__c C rs r )r r? r( r} r} r~ r ru zRecord_NULL.encodec C s t ||| _d S r )r r? re r} r} r~ r ru zRecord_NULL.decodec C r r )r r? r r} r} r~ r r
zRecord_NULL.__hash__)NNr )r r r r rh r rP rE r* r r r r r r} r} r} r~ rV s
rV c @ sV e Zd ZdZdZdZg dZeZe dd Z
dd d Z dd
dZ dddZ
dd Zd
S )r_ aX
A well known service description.
This record type is obsolete. See L{Record_SRV}.
@type address: L{bytes}
@ivar address: The packed network-order representation of the IPv4 address
associated with this record.
@type protocol: L{int}
@ivar protocol: The 8 bit IP protocol number for which this service map is
relevant.
@type map: L{bytes}
@ivar map: A bitvector indicating the services available at the specified
address.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
r4 )rm r mapr> )_addressrm rd r r> c C r{ r r| r r} r} r~ r s zRecord_WKS._addressrn r r Nc C s< t |tr
|d}t|| _||| _| _t|| _ dS )ro r N)
r r{ r rp rq rm r r r r> )r rm r r r> r} r} r~ r s
zRecord_WKS.__init__c C s0 | | j | td| j | | j d S N!B)r rm r r r r r( r} r} r~ r s zRecord_WKS.encodec C s8 t |d| _tdt |dd | _t ||d | _d S )Nr r r r r )r rm r r r r re r} r} r~ r s zRecord_WKS.decodec C t | j| j| jfS r )r rm r r r r} r} r~ r zRecord_WKS.__hash__)rn r r Nr )r r r r rh rE rP r4 r rQ r r r r r r} r} r} r~ r_ s
r_ c @ sR e Zd ZdZeZdZdZdZe dd Z
dd d
Z dd d Z dd
dZ
dd ZdS )rH aT
An IPv6 host address.
@type address: L{bytes}
@ivar address: The packed network-order representation of the IPv6 address
associated with this record.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
@see: U{http://www.faqs.org/rfcs/rfc1886.html}
r )r r> rl c C t t| jS r )rp inet_ntopAF_INET6rm r r} r} r~ r : zRecord_AAAA._address::Nc C s0 t |tr
|d}tt|| _t|| _dS )z
@type address: L{bytes} or L{str}
@param address: The IPv6 address for this host, in RFC 2373 format.
r N) r r{ r rp inet_ptonr rm r r> rr r} r} r~ r > s
zRecord_AAAA.__init__c C rs r rt r( r} r} r~ r I ru zRecord_AAAA.encodec C rv )Nr rw re r} r} r~ r L ru zRecord_AAAA.decodec C r r rx r r} r} r~ r O r
zRecord_AAAA.__hash__)r Nr )r r r r r r rh rP rE rQ r r r r r r} r} r} r~ rH $ s
rH c @ sr e Zd ZdZeZdZdZdZe dd Z
dd d Z dd
dZ dddZ
dedefddZdd ZdefddZd
S )rG a
An IPv6 address.
This is an experimental record type.
@type prefixLen: L{int}
@ivar prefixLen: The length of the suffix.
@type suffix: L{bytes}
@ivar suffix: An IPv6 address suffix in network order.
@type prefix: L{Name}
@ivar prefix: If specified, a name which will be used as a prefix for other
A6 records.
@type bytes: L{int}
@ivar bytes: The length of the prefix.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
@see: U{http://www.faqs.org/rfcs/rfc2874.html}
@see: U{http://www.faqs.org/rfcs/rfc3363.html}
@see: U{http://www.faqs.org/rfcs/rfc3364.html}
r ))_suffixsuffixrd )r[ r[ rd r> ) prefixLenr[ r r> c C r r )rp r r r r r} r} r~ r v r zRecord_A6._suffixr r r Nc C sT t |tr
|d}|| _tt|| _t|| _ t
d| j d | _t || _ dS )z
@param suffix: An IPv6 address suffix in in RFC 2373 format.
@type suffix: L{bytes} or L{str}
@param prefix: An IPv6 address prefix for other A6 records.
@type prefix: L{bytes} or L{str}
r @N)
r r{ r r rp r r r rh r[ r r r> )r r r r[ r> r} r} r~ r z s
zRecord_A6.__init__c C sN | td| j | jr| | j| j d | jr%| j|d d S d S r )r r r r r{ r r[ r r( r} r} r~ r s zRecord_A6.encodec C sh t dt|dd | _td| j d | _| jr'dd| j t|| j | _| jr2| j| d S d S )Nr r r r r r r ) r r r r r r{ r r[ r re r} r} r~ r s zRecord_A6.decoder r c C sV t |tr)| j|jko(| j| j d |j| j d ko(| j|jko(| j|jkS tS r )r rG r r r{ r[ r> r r r} r} r~ r s
"
zRecord_A6.__eq__c C s t | j| j| j d | jfS r )r r r r{ r[ r r} r} r~ r r1 zRecord_A6.__hash__c C s d| j tt| j| j| jf S )Nz)r[ rp r r r r r> r r} r} r~ r s zRecord_A6.__str__)r r r Nr )r r r r r r rh rP rE rQ r r r r r r r r r r r} r} r} r~ rG S s
rG c @ F e Zd ZdZeZdZdZdZddd Z dd
d Z
dd d
Z dd Z dS )r[ a:
The location of the server(s) for a specific protocol and domain.
This is an experimental record type.
@type priority: L{int}
@ivar priority: The priority of this target host. A client MUST attempt to
contact the target host with the lowest-numbered priority it can reach;
target hosts with the same priority SHOULD be tried in an order defined
by the weight field.
@type weight: L{int}
@ivar weight: Specifies a relative weight for entries with the same
priority. Larger weights SHOULD be given a proportionately higher
probability of being selected.
@type port: L{int}
@ivar port: The port on this target host of this service.
@type target: L{Name}
@ivar target: The domain name of the target host. There MUST be one or
more address records for this name, the name MUST NOT be an alias (in
the sense of RFC 1034 or RFC 2181). Implementors are urged, but not
required, to return the address record(s) in the Additional Data
section. Unless and until permitted by future standards action, name
compression is not to be used for this field.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
@see: U{http://www.faqs.org/rfcs/rfc2782.html}
r0 )priorityweighttargetportr> )r r )r r rd r r> r r Nc C s6 t || _t || _t || _t|| _t|| _dS )zb
@param target: See L{Record_SRV.target}
@type target: L{bytes} or L{str}
N)r r r r rh r r r> )r r r r r r> r} r} r~ r s
zRecord_SRV.__init__c C s. | td| j| j| j | j|d d S N!HHH)r r r r r r r r r( r} r} r~ r s zRecord_SRV.encodec C s@ t dt|t d}|\| _| _| _t | _| j | d S r )
r r r rV r r r rh r r r r} r} r~ r s zRecord_SRV.decodec C t | j| j| j| jfS r )r r r r r r r} r} r~ r rz zRecord_SRV.__hash__)r r r r Nr )
r r r r r0 r rh rE rP r r r r r} r} r} r~ r[ s "
r[ c @ sT e Zd ZdZeZdZdZdZ ddd Z dd
d Z
dd d
Z dd Z dS )rT a
The location of the server(s) for a specific protocol and domain.
@type order: L{int}
@ivar order: An integer specifying the order in which the NAPTR records
MUST be processed to ensure the correct ordering of rules. Low numbers
are processed before high numbers.
@type preference: L{int}
@ivar preference: An integer that specifies the order in which NAPTR
records with equal "order" values SHOULD be processed, low numbers
being processed before high numbers.
@type flag: L{Charstr}
@ivar flag: A containing flags to control aspects of the
rewriting and interpretation of the fields in the record. Flags
are single characters from the set [A-Z0-9]. The case of the alphabetic
characters is not significant.
At this time only four flags, "S", "A", "U", and "P", are defined.
@type service: L{Charstr}
@ivar service: Specifies the service(s) available down this rewrite path.
It may also specify the particular protocol that is used to talk with a
service. A protocol MUST be specified if the flags field states that
the NAPTR is terminal.
@type regexp: L{Charstr}
@ivar regexp: A STRING containing a substitution expression that is applied
to the original string held by the client in order to construct the
next domain name to lookup.
@type replacement: L{Name}
@ivar replacement: The next NAME to query for NAPTR, SRV, or address
records depending on the value of the flags field. This MUST be a
fully qualified domain-name.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
@see: U{http://www.faqs.org/rfcs/rfc2915.html}
)order
preferenceflagsserviceregexp replacementr( )r r )r r rd )r r rd )r r rd )r r rd r> r r Nc C sJ t || _t || _t|| _t|| _t|| _t|| _t || _
dS )zs
@param replacement: See L{Record_NAPTR.replacement}
@type replacement: L{bytes} or L{str}
N) r r r rf r r r rh r r r> )r r r r r r r r> r} r} r~ r 9 s
zRecord_NAPTR.__init__c C sT | td| j| j | j|d | j|d | j|d | j |d d S r& )
r r r r r r r r r r r( r} r} r~ r O s
zRecord_NAPTR.encodec C sx t dt|t d}|\| _| _t | _t | _t | _ t
| _ | j | | j | | j | | j | d S r& )
r r r rV r r rf r r r rh r r r r} r} r~ r W s zRecord_NAPTR.decodec C r r )r r r r r r r r r} r} r~ r c s zRecord_NAPTR.__hash__)r r r r r r Nr )
r r r r r( r rE rh rP r r r r r} r} r} r~ rT s" ,
rT c @ r )rI a
Map from a domain name to the name of an AFS cell database server.
@type subtype: L{int}
@ivar subtype: In the case of subtype 1, the host has an AFS version 3.0
Volume Location Server for the named AFS cell. In the case of subtype
2, the host has an authenticated name server holding the cell-root
directory node for the named DCE/NCA cell.
@type hostname: L{Name}
@ivar hostname: The domain name of a host that has a server for the cell
named by this record.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
@see: U{http://www.faqs.org/rfcs/rfc1183.html}
r )subtypehostnamer> )r )r r rd r> r r Nc C s" t || _t|| _t|| _dS )zj
@param hostname: See L{Record_AFSDB.hostname}
@type hostname: L{bytes} or L{str}
N)r r rh r r r> )r r r r> r} r} r~ r s
zRecord_AFSDB.__init__c C & | td| j | j|| d S Nr )r r r r r r r( r} r} r~ r zRecord_AFSDB.encodec C s0 t dt|t d}|\| _| j| d S r )r r r rV r r r r r} r} r~ r zRecord_AFSDB.decodec C t | j| jfS r )r r r r r} r} r~ r ru zRecord_AFSDB.__hash__r r Nr )
r r r r r r rh rE rP r r r r r} r} r} r~ rI p s
rI c @ sF e Zd ZdZeZdZdZdZdddZ dd d
Z
dd d Z d
d Z dS )rX a
The responsible person for a domain.
@type mbox: L{Name}
@ivar mbox: A domain name that specifies the mailbox for the responsible
person.
@type txt: L{Name}
@ivar txt: A domain name for which TXT RR's exist (indirection through
which allows information sharing about the contents of this RP record).
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
@see: U{http://www.faqs.org/rfcs/rfc1183.html}
r- )mboxtxtr> ))r r rd )r r rd r> r Nc C s" t || _t || _t|| _dS )z
@param mbox: See L{Record_RP.mbox}.
@type mbox: L{bytes} or L{str}
@param txt: See L{Record_RP.txt}
@type txt: L{bytes} or L{str}
N)rh r r r r> )r r r r> r} r} r~ r s
zRecord_RP.__init__c C | j || | j|| d S r )r r r r( r} r} r~ r zRecord_RP.encodec C s, t | _t | _| j| | j| d S r )rh r r r re r} r} r~ r s zRecord_RP.decodec C r r )r r r r r} r} r~ r ru zRecord_RP.__hash__r r Nr )
r r r r r- r rh rE rP r r r r r} r} r} r~ rX s
rX c @ sf e Zd ZdZeZdZdefdefdfZdZ dd d
Z
dd d Z dd
dZ de
defddZdd ZdS )rL a
Host information.
@type cpu: L{bytes}
@ivar cpu: Specifies the CPU type.
@type os: L{bytes}
@ivar os: Specifies the OS.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
r cpuosr> )r r r> r Nc C s ||| _ | _t|| _d S r )r r r r> )r r r r> r} r} r~ r s zRecord_HINFO.__init__c C s@ | tdt| j| j | tdt| j| j d S r )r r r r r r r( r} r} r~ r s "zRecord_HINFO.encodec C sH t dt|dd }t||| _t dt|dd }t||| _d S )Nr r r )r r r r r )r r r r r r} r} r~ r s zRecord_HINFO.decoder r c C sB t |tr | j |j ko | j |j ko | j|jkS tS r )r rL r r r r> r r r} r} r~ r s
zRecord_HINFO.__eq__c C s t | j | j fS r )r r r r r r} r} r~ r rz zRecord_HINFO.__hash__r r )r r r r r r rh r rP rE r r r r r r r r} r} r} r~ rL s
rL c @ sN e Zd ZdZeZdZdZdZdZ dZ
dddZ dd d
Z dd d Z
d
d ZdS )rQ a
Mailbox or mail list information.
This is an experimental record type.
@type rmailbx: L{Name}
@ivar rmailbx: A domain-name which specifies a mailbox which is responsible
for the mailing list or mailbox. If this domain name names the root,
the owner of the MINFO RR is responsible for itself.
@type emailbx: L{Name}
@ivar emailbx: A domain-name which specifies a mailbox which is to receive
error messages related to the mailing list or mailbox specified by the
owner of the MINFO record. If this domain name names the root, errors
should be returned to the sender of the message.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
Nr% )rmailbxemailbxr> ))r responsibilityrd )r errorsrd r> r c C s$ t |t || _| _t|| _dS )z
@param rmailbx: See L{Record_MINFO.rmailbx}.
@type rmailbx: L{bytes} or L{str}
@param emailbx: See L{Record_MINFO.rmailbx}.
@type emailbx: L{bytes} or L{str}
N)rh r r r r> )r r r r> r} r} r~ r + s zRecord_MINFO.__init__c C r r )r r r r( r} r} r~ r 6 r zRecord_MINFO.encodec C s. t t | _| _| j| | j| d S r )rh r r r re r} r} r~ r : s zRecord_MINFO.decodec C r r )r r r r r} r} r~ r ? ru zRecord_MINFO.__hash__r r )r r r r r% r r r rh rE rP r r r r r} r} r} r~ rQ s
rQ c @ r )rS a
Mail exchange.
@type preference: L{int}
@ivar preference: Specifies the preference given to this RR among others at
the same owner. Lower values are preferred.
@type name: L{Name}
@ivar name: A domain-name which specifies a host willing to act as a mail
exchange.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be
cached.
r' )r r r> )r rc r> r r Nc K s* t || _t|d|| _t|| _dS )z\
@param name: See L{Record_MX.name}.
@type name: L{bytes} or L{str}
exchangeN)r r rh r r r r> )r r r r> kwargsr} r} r~ r [ s
zRecord_MX.__init__c C r r )r r r r r r r( r} r} r~ r d r zRecord_MX.encodec C s0 t dt|dd | _t | _| j| d S )Nr r r )r r r r rh r r re r} r} r~ r h r zRecord_MX.decodec C r r )r r r r r} r} r~ r m ru zRecord_MX.__hash__r r )
r r r r r' r rh rE rP r r r r r} r} r} r~ rS C s
rS c @ s^ e Zd ZdZdZdZdZeZdZ dZ
dZ dZ dZ
dZdd d ZdddZdddZdd Zd
S )r\ ab
A record containing the fingerprint of an SSH key.
@type algorithm: L{int}
@ivar algorithm: The SSH key's algorithm, such as L{ALGORITHM_RSA}.
Note that the numbering used for SSH key algorithms is specific
to the SSHFP record, and is not the same as the numbering
used for KEY or SIG records.
@type fingerprintType: L{int}
@ivar fingerprintType: The fingerprint type,
such as L{FINGERPRINT_TYPE_SHA256}.
@type fingerprint: L{bytes}
@ivar fingerprint: The key's fingerprint, e.g. a 32-byte SHA-256 digest.
@cvar ALGORITHM_RSA: The algorithm value for C{ssh-rsa} keys.
@cvar ALGORITHM_DSS: The algorithm value for C{ssh-dss} keys.
@cvar ALGORITHM_ECDSA: The algorithm value for C{ecdsa-sha2-*} keys.
@cvar ALGORITHM_Ed25519: The algorithm value for C{ed25519} keys.
@cvar FINGERPRINT_TYPE_SHA1: The type for SHA-1 fingerprints.
@cvar FINGERPRINT_TYPE_SHA256: The type for SHA-256 fingerprints.
@see: U{RFC 4255 }
and
U{RFC 6594 }
r2 algorithmfingerprintType fingerprintr> )r r r r r r r r r c C s || _ || _|| _|| _d S r r )r r r r r> r} r} r~ r s
zRecord_SSHFP.__init__Nc C s( | td| j| j | | j d S )N!BB)r r r r r r r( r} r} r~ r s zRecord_SSHFP.encodec C s2 t dt|d}|\| _| _t||d | _d S )Nr r )r r r r r r r r} r} r~ r s zRecord_SSHFP.decodec C r r )r r r r r r} r} r~ r r zRecord_SSHFP.__hash__)r r r r r )r r r r rh rE rP r2 r
ALGORITHM_RSA
ALGORITHM_DSSALGORITHM_ECDSAALGORITHM_Ed25519FINGERPRINT_TYPE_SHA1FINGERPRINT_TYPE_SHA256r r r r r} r} r} r~ r\ q s
r\ c @ sL e Zd ZdZeZdZdefdfZdZ dd Z
dd d
Z dd d Z d
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dS )r^ z
Freeform text.
@type data: L{list} of L{bytes}
@ivar data: Freeform text which makes up this record.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be cached.
r1 rK r> rK r> c O s t || _t|dd | _d S )Nr> )r rK r r r> )r rK kwr} r} r~ r s
zRecord_TXT.__init__Nc C s* | j D ]}|tdt|| qd S r )rK r r r r )r r r dr} r} r~ r s
zRecord_TXT.encodec C st d}g | _ ||k r'tdt|dd }| j t|| ||d 7 }||k s ||kr8td|| j|f d S d S )Nr r r z1Decoded %d bytes in %s record, but rdlength is %d)rK r r r r r msgrh )r r r soFarLr} r} r~ r s
zRecord_TXT.decodec C s t t| jS r )r tuplerK r r} r} r~ r s zRecord_TXT.__hash__r )r r r r r1 r rh r rP rE r r r r r} r} r} r~ r^ s
r^ c @ sN e Zd ZdZdZdZdZdefdfZddd Z dd
d Z
dd d
Z dd Z dS )r` a>
Encapsulate the wire data for unknown record types so that they can
pass through the system unchanged.
@type data: L{bytes}
@ivar data: Wire data which makes up this record.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds which this record should be cached.
@since: 11.1
NUNKNOWNr rK r> r c C r r )rK r r> )r rK r> r} r} r~ r r zUnknownRecord.__init__c C s | | j dS )zc
Write the raw bytes corresponding to this record's payload to the
stream.
N)r rK r( r} r} r~ r zUnknownRecord.encodec C s |du rt dt||| _dS )z~
Load the bytes which are part of this record from the stream and store
them unparsed and unmodified.
Nz)must know length for unknown record types) Exceptionr rK re r} r} r~ r s zUnknownRecord.decodec C r r )r rK r> r r} r} r~ r ru zUnknownRecord.__hash__rf r )
r r r r r rh rE r rP r r r r r} r} r} r~ r` s
r` c @ rg )rZ ao
Structurally, freeform text. Semantically, a policy definition, formatted
as defined in U{rfc 4408}.
@type data: L{list} of L{bytes}
@ivar data: Freeform text which makes up this record.
@type ttl: L{int}
@ivar ttl: The maximum number of seconds
which this record should be cached.
r/ N)r r r r r/ r rh r} r} r} r~ rZ
s rZ c @ sZ e Zd ZdZdZdZg dZeZddddde ddfd d
Z
dd d Z dd
dZ dd Z
dS )r] a
A transaction signature, encapsulated in a RR, as described
in U{RFC 2845 }.
@type algorithm: L{Name}
@ivar algorithm: The name of the signature or MAC algorithm.
@type timeSigned: L{int}
@ivar timeSigned: Signing time, as seconds from the POSIX epoch.
@type fudge: L{int}
@ivar fudge: Allowable time skew, in seconds.
@type MAC: L{bytes}
@ivar MAC: The message digest or signature.
@type originalID: L{int}
@ivar originalID: A message ID.
@type error: L{int}
@ivar error: An error code (extended C{RCODE}) carried
in exceptional cases.
@type otherData: L{bytes}
@ivar otherData: Other data carried in exceptional cases.
r3 )r
timeSignedfudgeMAC
originalIDerror otherDatar> )r r r r r Nr r r c C sH |d u rd nt || _|| _t|| _|| _|| _|| _|| _|| _ d S r )
rh r r r r r r r r r> ) r r r r r r r r r> r} r} r~ r H s
zRecord_TSIG.__init__c C s | j || |td| jdd |td| jt| j || j |td| j | j
t| j || j d S )Nz!Qr r' r ) r r r r r r r r r r r r r( r} r} r~ r a s zRecord_TSIG.encodec C sv t }|| || _tddt|d }|\| _| _}t||| _tdt|d}|\| _ | _
}t||| _ d S )Nz!QHHs
r r ) rh r r r r r r r r r r r )r r r r fields macLength otherLengthr} r} r~ r k s
zRecord_TSIG.decodec C r r )r r r r r r r} r} r~ r v rz zRecord_TSIG.__hash__r )r r r r rh rE rP r3 r ro r r r r r} r} r} r~ r] s$
r] c K s* | d|j dd|}|jdd |_|S )a
Generate a L{Message} like instance suitable for use as the response to
C{message}.
The C{queries}, C{id} attributes will be copied from C{message} and the
C{answer} flag will be set to L{True}.
@param responseConstructor: A response message constructor with an
initializer signature matching L{dns.Message.__init__}.
@type responseConstructor: C{callable}
@param message: A request message.
@type message: L{Message}
@param kwargs: Keyword arguments which will be passed to the initialiser
of the response message.
@type kwargs: L{dict}
@return: A L{Message} like response instance.
@rtype: C{responseConstructor}
T)idanswerNr} )r queries)responseConstructormessager responser} r} r~ _responseFromMessagez s r c C s^ g }t | jj}|D ]!}|j| j}t| ||}||v s!||kr,|d| d| q |S )a
Inspect the function signature of C{obj}'s constructor,
and get a list of which arguments should be displayed.
This is a helper function for C{_compactRepr}.
@param obj: The instance whose repr is being generated.
@param alwaysShow: A L{list} of field names which should always be shown.
@param fieldNames: A L{list} of field attribute names which should be shown
if they have non-default values.
@return: A L{list} of displayable arguments.
r+ =)inspect signature __class__r
parametersr rG r )obj
alwaysShow
fieldNamesdisplayableArgsr r defaultValue
fieldValuer} r} r~ _getDisplayableArguments s r c
C s |du rg }|du r g }|du rg }|du rg }g }|D ]}||v s*t | |ddkr/|| q t| ||}d| jjg| }|rK|dd| |D ]}t | |g } | rb|d| d| qM|d d
|S ) a
Return a L{str} representation of C{obj} which only shows fields with
non-default values, flags which are True and sections which have been
explicitly set.
@param obj: The instance whose repr is being generated.
@param alwaysShow: A L{list} of field names which should always be shown.
@param flagNames: A L{list} of flag attribute names which should be shown if
they are L{True}.
@param fieldNames: A L{list} of field attribute names which should be shown
if they have non-default values.
@param sectionNames: A L{list} of section attribute names which should be
shown if they have been assigned a value.
@return: A L{str} representation of C{obj}.
NFT}.
@type authenticData: L{int}
@param checkingDisabled: A flag indicating in a query that
pending (non-authenticated) data is acceptable to the
resolver sending the query.
See U{RFC2535 section-6.1}.
@type authenticData: L{int}
N)r r r r rW r r r r r r r r r r ) r r r r r r rW r r r r r r} r} r~ r +
s J
zMessage.__init__r c C t | dddddS )z
Generate a repr of this L{Message}.
Only includes the non-default fields and sections and only includes
flags which are set. The C{id} is always shown.
@return: The native string repr.
)r rW r r r r r )r r r r r r r r r r r r r r r r} r} r~ r0
s zMessage.__repr__c C s | j t||| dS )z
Add another query to this Message.
@type name: L{bytes}
@param name: The name to query.
@type type: L{int}
@param type: Query type
@type cls: L{int}
@param cls: Query class
N)r r ri r% r} r} r~ addQuery
s
zMessage.addQueryc
C sh i }t }| jD ]}||| q| jD ]}||| q| jD ]}||| q | jD ]}||| q,| }t|| j }| j rU|| j krUd| _
|d | j | j }| j d@ d> | j d@ d> B | j
d@ d> B | j
d@ d> B | jd@ B }| jd@ d> | jd@ d> B | jd@ d> B | jd@ B }|t| j| j||t| jt| jt| jt| j || d S )Nr r= r r r r )r r r r r r r@ r r r r r r rW r r r r r r r r headerFmtr ) r r r body_tmpqbodysizebyte3byte4r} r} r~ r
s\
zMessage.encodec
C st d| _ t|| j}t| j|}|\| _}}}}} }
|d? d@ | _|d? d@ | _|d? d@ | _ |d? d@ | _
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Nr r
r r r= r r r r ) r r r r r r r r r rW r r r r r r r r r r rangeri r r r r r r parseRecords)r r r headerr] r r nqueriesnansnnsnadd
decodeContextir itemsr r3 r} r} r~ r
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|j||j W n tyD Y d S w |
| qd S )Nr^ )r> ) r rj rW r r lookupRecordTyper r> r? rC r )r r numr r r r. r} r} r~ r s$ zMessage.parseRecordsRecord_c C s | j |tS )aC
Retrieve the L{IRecord} implementation for the given record type.
@param type: A record type, such as C{A} or L{NS}.
@type type: L{int}
@return: An object which implements L{IRecord} or L{None} if none
can be found for the given type.
@rtype: C{Type[IRecord]}
) _recordTypesr r` )r r r} r} r~ r s zMessage.lookupRecordTypec C s t }| | | S )z
Encode this L{Message} into a byte string in the format described by RFC
1035.
@rtype: L{bytes}
)r r r@ )r r r} r} r~ toStr, s
z
Message.toStrc C s t |}| | dS )z
Decode a byte string in the format described by RFC 1035 into this
L{Message}.
@param str: L{bytes}
N)r r )r r r r} r} r~ fromStr7 s zMessage.fromStrr )"r r r r r r r# rE r r rV r r r r nsro r r r0 r: r9 r r r r r" globalsr
startswithr r r# r$ r} r} r} r~ rg sB
/
[
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rg c @ sv e Zd ZdZdZeZddeddddddddddddddfddZd e fd
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An I{EDNS} message.
Designed for compatibility with L{Message} but with a narrower public
interface.
Most importantly, L{_EDNSMessage.fromStr} will interpret and remove I{OPT}
records that are present in the additional records section.
The I{OPT} records are used to populate certain I{EDNS} specific attributes.
L{_EDNSMessage.toStr} will add suitable I{OPT} records to the additional
section to represent the extended EDNS information.
@see: U{https://tools.ietf.org/html/rfc6891}
@ivar id: See L{__init__}
@ivar answer: See L{__init__}
@ivar opCode: See L{__init__}
@ivar auth: See L{__init__}
@ivar trunc: See L{__init__}
@ivar recDes: See L{__init__}
@ivar recAv: See L{__init__}
@ivar rCode: See L{__init__}
@ivar ednsVersion: See L{__init__}
@ivar dnssecOK: See L{__init__}
@ivar authenticData: See L{__init__}
@ivar checkingDisabled: See L{__init__}
@ivar maxSize: See L{__init__}
@ivar queries: See L{__init__}
@ivar answers: See L{__init__}
@ivar authority: See L{__init__}
@ivar additional: See L{__init__}
@ivar _messageFactory: A constructor of L{Message} instances. Called by
C{_toMessage} and C{_fromMessage}.
r r r rW r r r r ednsVersionr8 r r r r r r r r Fr Nc C s || _ || _|| _|| _|| _|| _|| _|| _| | _|
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|du r6g }|| _|du r?g }|| _|du rHg }|| _dS )a+
Construct a new L{_EDNSMessage}
@see: U{RFC1035 section-4.1.1}
@see: U{RFC2535 section-6.1}
@see: U{RFC3225 section-3}
@see: U{RFC6891 section-6.1.3}
@param id: A 16 bit identifier assigned by the program that generates
any kind of query. This identifier is copied the corresponding
reply and can be used by the requester to match up replies to
outstanding queries.
@type id: L{int}
@param answer: A one bit field that specifies whether this message is a
query (0), or a response (1).
@type answer: L{bool}
@param opCode: A four bit field that specifies kind of query in this
message. This value is set by the originator of a query and copied
into the response.
@type opCode: L{int}
@param auth: Authoritative Answer - this bit is valid in responses, and
specifies that the responding name server is an authority for the
domain name in question section.
@type auth: L{bool}
@param trunc: Truncation - specifies that this message was truncated due
to length greater than that permitted on the transmission channel.
@type trunc: L{bool}
@param recDes: Recursion Desired - this bit may be set in a query and is
copied into the response. If set, it directs the name server to
pursue the query recursively. Recursive query support is optional.
@type recDes: L{bool}
@param recAv: Recursion Available - this bit is set or cleared in a
response, and denotes whether recursive query support is available
in the name server.
@type recAv: L{bool}
@param rCode: Extended 12-bit RCODE. Derived from the 4 bits defined in
U{RFC1035 4.1.1}
and the upper 8bits defined in U{RFC6891
6.1.3}.
@type rCode: L{int}
@param ednsVersion: Indicates the EDNS implementation level. Set to
L{None} to prevent any EDNS attributes and options being added to
the encoded byte string.
@type ednsVersion: L{int} or L{None}
@param dnssecOK: DNSSEC OK bit as defined by
U{RFC3225 3}.
@type dnssecOK: L{bool}
@param authenticData: A flag indicating in a response that all the data
included in the answer and authority portion of the response has
been authenticated by the server according to the policies of that
server.
See U{RFC2535 section-6.1}.
@type authenticData: L{bool}
@param checkingDisabled: A flag indicating in a query that pending
(non-authenticated) data is acceptable to the resolver sending the
query.
See U{RFC2535 section-6.1}.
@type authenticData: L{bool}
@param maxSize: The requestor's UDP payload size is the number of octets
of the largest UDP payload that can be reassembled and delivered in
the requestor's network stack.
@type maxSize: L{int}
@param queries: The L{list} of L{Query} associated with this message.
@type queries: L{list} of L{Query}
@param answers: The L{list} of answers associated with this message.
@type answers: L{list} of L{RRHeader}
@param authority: The L{list} of authority records associated with this
message.
@type authority: L{list} of L{RRHeader}
@param additional: The L{list} of additional records associated with
this message.
@type additional: L{list} of L{RRHeader}
Nr) )r r r r rW r r r r r* r8 r r r r r r r r} r} r~ r s2 m
z_EDNSMessage.__init__r c C r )N)r rW r r r r r r8 )r r r r r* r r r
r r r} r} r~ r0 s
z_EDNSMessage.__repr__c C s | j | j| j| j| j| j| j| j| jd@ | j | j
d
}| j dd |_ | j dd |_ | j
dd |_
| jdd |_| jdurTt| j| j| j| jd? d}|j| |S )a=
Convert to a standard L{dns.Message}.
If C{ednsVersion} is not None, an L{_OPTHeader} instance containing all
the I{EDNS} specific attributes and options will be appended to the list
of C{additional} records.
@return: A L{dns.Message}
@rtype: L{dns.Message}
r= )
r r r rW r r r r r r Nr )r7 r8 r5 r6 )_messageFactoryr r r rW r r r r r r r r r r r* r2 r8 r r )r mrA r} r} r~
_toMessage s2
z_EDNSMessage._toMessagec C s | S )z~
Encode to wire format by first converting to a standard L{dns.Message}.
@return: A L{bytes} string.
)r- r# r r} r} r~ r# G s z_EDNSMessage.toStrc C s g }g }|j D ]}|jtkr|t| q|| q| di d|jd|jd|jd|j d|j
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B |_
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Construct and return a new L{_EDNSMessage} whose attributes and records
are derived from the attributes and records of C{message} (a L{Message}
instance).
If present, an C{OPT} record will be extracted from the C{additional}
section and its attributes and options will be used to set the EDNS
specific attributes C{extendedRCODE}, C{ednsVersion}, C{dnssecOK},
C{ednsOptions}.
The C{extendedRCODE} will be combined with C{message.rCode} and assigned
to C{self.rCode}.
@param message: The source L{Message}.
@type message: L{Message}
@return: A new L{_EDNSMessage}
@rtype: L{_EDNSMessage}
r r r rW r r r r r r r* Nr8 Fr r r r r r r r} )r r r+ r r2 rD r r r rW r r r r r r r r r r r7 r* r8 r5 r r6 )r$ r r
optRecordsr]
newMessageoptr} r} r~ _fromMessageO s\
z_EDNSMessage._fromMessagec C s> | }|| | |}| jD ] }t| |t|| qdS )z
Decode from wire format, saving flags, values and records to this
L{_EDNSMessage} instance in place.
@param bytes: The full byte string to be decoded.
@type bytes: L{bytes}
N)r+ r$ r1 rE rF rG )r r{ r, ednsMessagerJ r} r} r~ r$ s
z_EDNSMessage.fromStr)r r r r rE rg r+ rr r r r0 r- r# rR r1 r$ r} r} r} r~ r( B s: '
*
.writeMessage)rN rT r
r rA r; rM rH )r rm r rD r rE r} r] r~ query5
s
zDNSDatagramProtocol.query)r N) r r r r rM rO rP rE rT r[ r\ r^ r} r} r} r~ rl s rl c @ sB e Zd ZdZdZdZdd Zdd Zdd Zd
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DNS protocol over TCP.
Nr c C s( | }| jtdt|| dS )rQ r N)r# rN r r r r )r r r r} r} r~ rE [
s zDNSProtocol.writeMessagec C s i | _ | j| dS )zV
Connection is made: reset internal state, and notify the controller.
N)r9 r4 connectionMader r} r} r~ r_ d
s zDNSProtocol.connectionMadec C s | j | dS )zZ
Notify the controller that this protocol is no longer
connected.
N)r4 connectionLost)r reasonr} r} r~ r` k
r zDNSProtocol.connectionLostc C s& | j |7 _ | j r| jd u r,t| j dkr,td| j d d d | _| j dd | _ t| j | jkr| j d | j }t }|| z
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ty| t Y nw | j | jd | _ d | _nd S | j s
d S d S )Nr r r )bufferr r r r rg r$ r9 r rI r4 rX rV rW r@ r rU )r rK myChunkr, r rZ r} r} r~ dataReceivedr
s2
zDNSProtocol.dataReceivedr c C s | }| |||| jS )z
Send out a message with the given queries.
@type queries: L{list} of C{Query} instances
@param queries: The queries to transmit
@rtype: C{Deferred}
)r; rH rE )r r rD r r} r} r~ r^
s zDNSProtocol.query)r ) r r r r r rb rE r_ r` rd r^ r} r} r} r~ rn S
s rn )NNNN)r contextvarsr r5 rp r
contextlibr ior itertoolsr typingr r r zope.interfacer r r
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twisted.pythonr r r r tputiltwisted.python.compatr r r __all__r r r r r ru r r r) r" r# r r. r! r$ r& r* r4 r, r r% r' r1 r- r r r0 r( r r r+ r2 r/ r r3 rb r< r; r r r: re r rd r9 r7 r6 r8 r5 ra rc rr rp rs rq rt ro r= rA r> r? r@ rB rC rD rE r twisted.names.errorrv rx ry r r r r r r rw r
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FancyStrMixin FancyEqMixinr2 rL rj rk rU rN rO rJ rM rP rR rW rK rF rY rV r_ rH rG r[ rT rI rX rL rQ rS r\ r^ r` rZ r] r r r rg r( rm DatagramProtocolrl Protocolrn r} r} r} r~ s i
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