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;>Sc @ sG d Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l
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__module__t __doc__( ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR ' s t TrailingJunkc B s e Z d Z RS( sS Raised if the DNS packet passed to from_wire() has extra junk
at the end of it.( R R R ( ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR + s t UnknownHeaderFieldc B s e Z d Z RS( s] Raised if a header field name is not recognized when converting from
text into a message.( R R R ( ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR 0 s t BadEDNSc B s e Z d Z RS( sa Raised if an OPT record occurs somewhere other than the start of
the additional data section.( R R R ( ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR 5 s t BadTSIGc B s e Z d Z RS( s_ Raised if a TSIG record occurs somewhere other than the end of
the additional data section.( R R R ( ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR : s t UnknownTSIGKeyc B s e Z d Z RS( s/ Raised if we got a TSIG but don't know the key.( R R R ( ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR ? s t Messagec B s
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A DNS message.
@ivar id: The query id; the default is a randomly chosen id.
@type id: int
@ivar flags: The DNS flags of the message. @see: RFC 1035 for an
explanation of these flags.
@type flags: int
@ivar question: The question section.
@type question: list of dns.rrset.RRset objects
@ivar answer: The answer section.
@type answer: list of dns.rrset.RRset objects
@ivar authority: The authority section.
@type authority: list of dns.rrset.RRset objects
@ivar additional: The additional data section.
@type additional: list of dns.rrset.RRset objects
@ivar edns: The EDNS level to use. The default is -1, no Edns.
@type edns: int
@ivar ednsflags: The EDNS flags
@type ednsflags: long
@ivar payload: The EDNS payload size. The default is 0.
@type payload: int
@ivar options: The EDNS options
@type options: list of dns.edns.Option objects
@ivar request_payload: The associated request's EDNS payload size.
@type request_payload: int
@ivar keyring: The TSIG keyring to use. The default is None.
@type keyring: dict
@ivar keyname: The TSIG keyname to use. The default is None.
@type keyname: dns.name.Name object
@ivar keyalgorithm: The TSIG algorithm to use; defaults to
dns.tsig.default_algorithm. Constants for TSIG algorithms are defined
in dns.tsig, and the currently implemented algorithms are
HMAC_MD5, HMAC_SHA1, HMAC_SHA224, HMAC_SHA256, HMAC_SHA384, and
HMAC_SHA512.
@type keyalgorithm: string
@ivar request_mac: The TSIG MAC of the request message associated with
this message; used when validating TSIG signatures. @see: RFC 2845 for
more information on TSIG fields.
@type request_mac: string
@ivar fudge: TSIG time fudge; default is 300 seconds.
@type fudge: int
@ivar original_id: TSIG original id; defaults to the message's id
@type original_id: int
@ivar tsig_error: TSIG error code; default is 0.
@type tsig_error: int
@ivar other_data: TSIG other data.
@type other_data: string
@ivar mac: The TSIG MAC for this message.
@type mac: string
@ivar xfr: Is the message being used to contain the results of a DNS
zone transfer? The default is False.
@type xfr: bool
@ivar origin: The origin of the zone in messages which are used for
zone transfers or for DNS dynamic updates. The default is None.
@type origin: dns.name.Name object
@ivar tsig_ctx: The TSIG signature context associated with this
message. The default is None.
@type tsig_ctx: hmac.HMAC object
@ivar had_tsig: Did the message decoded from wire format have a TSIG
signature?
@type had_tsig: bool
@ivar multi: Is this message part of a multi-message sequence? The
default is false. This variable is used when validating TSIG signatures
on messages which are part of a zone transfer.
@type multi: bool
@ivar first: Is this message standalone, or the first of a multi
message sequence? This variable is used when validating TSIG signatures
on messages which are part of a zone transfer.
@type first: bool
@ivar index: An index of rrsets in the message. The index key is
(section, name, rdclass, rdtype, covers, deleting). Indexing can be
disabled by setting the index to None.
@type index: dict
c C s! | d k r! t j j | _ n | | _ d | _ g | _ g | _ g | _ g | _ d | _
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The I{origin}, I{relativize}, and any other keyword
arguments are passed to the rrset to_wire() method.
@rtype: string
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header, question, answer, and authority sections.
@rtype: bool( t
isinstanceR R% R R R R R R+ ( R. t othert n( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyt __eq__ s2 c C s | j | S( s0 Are two messages not equal?
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@rtype: booli (
R R t QRR R6 R7 R% R8 R t NOERRORR+ R: R ( R. RB RC ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyt is_response s" c C s\ | | j k r d S| | j k r& d S| | j k r9 d S| | j k rL d St d d S( Ni i i i s unknown section( R R R R t
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| j |
| j d k r |
| j | O} | d k r g } n | | _ | | _ | | _ | | _ | | _ d S( s_ Configure EDNS behavior.
@param edns: The EDNS level to use. Specifying None, False, or -1
means 'do not use EDNS', and in this case the other parameters are
ignored. Specifying True is equivalent to specifying 0, i.e. 'use
EDNS0'.
@type edns: int or bool or None
@param ednsflags: EDNS flag values.
@type ednsflags: int
@param payload: The EDNS sender's payload field, which is the maximum
size of UDP datagram the sender can handle.
@type payload: int
@param request_payload: The EDNS payload size to use when sending
this message. If not specified, defaults to the value of payload.
@type request_payload: int or None
@param options: The EDNS options
@type options: None or list of dns.edns.Option objects
@see: RFC 2671
ii l ~ i N( R R% R+ R R R R R ( R. R R R R R ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyt use_edns s(
c C sf | r: | j d k r" | j n | j t j j O_ n( | j d k rb | j t j j M_ n d S( s
Enable or disable 'DNSSEC desired' flag in requests.
@param wanted: Is DNSSEC desired? If True, EDNS is enabled if
required, and then the DO bit is set. If False, the DO bit is
cleared if EDNS is enabled.
@type wanted: bool
i N( R Ro R R R t DO( R. t wanted( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyt want_dnssec s
c C s t j j | j | j S( s. Return the rcode.
@rtype: int
( R R8 R7 R R ( R. ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR8 s c C s t j j | \ } } | j d M_ | j | O_ | j d M_ | j | O_ | j d k r~ | j d k r~ d | _ n d S( sP Set the rcode.
@param rcode: the rcode
@type rcode: int
i l i N( R R8 t to_flagsR R R ( R. R8 t valuet evalue( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyt set_rcode s c C s t j j | j S( s/ Return the opcode.
@rtype: int
( R R6 R7 R ( R. ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR6 ! s c C s. | j d M_ | j t j j | O_ d S( sT Set the opcode.
@param opcode: the opcode
@type opcode: int
i N( R R R6 Rs ( R. R6 ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyt
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t _WireReaderc B s; e Z d Z e e e d Z d Z d Z d Z RS( s Wire format reader.
@ivar wire: the wire-format message.
@type wire: string
@ivar message: The message object being built
@type message: dns.message.Message object
@ivar current: When building a message object from wire format, this
variable contains the offset from the beginning of wire of the next octet
to be read.
@type current: int
@ivar updating: Is the message a dynamic update?
@type updating: bool
@ivar one_rr_per_rrset: Put each RR into its own RRset?
@type one_rr_per_rrset: bool
@ivar ignore_trailing: Ignore trailing junk at end of request?
@type ignore_trailing: bool
@ivar zone_rdclass: The class of the zone in messages which are
DNS dynamic updates.
@type zone_rdclass: int
c C s^ t j j | | _ | | _ d | _ t | _ t j j | _
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} n | j | | _ t
j d | j | j | j d ! \ } } | j d | _ | j j | j j | | | d t d t | j r4 | | _ q4 q4 Wd S( s Read the next I{qcount} records from the wire data and add them to
the question section.
@param qcount: the number of questions in the message
@type qcount: inti i s !HHi RV RW N( R R t exceptiont FormErrort xrangeRQ t from_wireR} R R~ R' R R< t structt unpackRY R R+ R ( R. t qcountt it qnamet usedRS RR ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyt
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the specified section.
@param section: the section of the message to which to add records
@type section: list of dns.rrset.RRset objects
@param count: the number of records to read
@type count: inti s !HHIHi
i i s !HHi i s" got signed message without keyrings key '%s' unknownN(7 R R R+ R% R R R RQ R R} R~ R' R R< R R Rx t OPTR R R R R R t option_from_wireRP t TSIGR R R RL R R t get_algorithm_and_macR R$ t validatet intt timeR R( R* R, R) R t ANYRy R R t rdataRT R& t SOARY t add( R. RJ t countRW t seen_optR t rr_startRQ R t
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c C sH t | j } | d k r$ t n t j d | j d \ | j _ | j _ } } } } d | _ t j
j | j j r t | _
n | j | | j r d S| j | j j | | j | j j | | j | j j | | j r| j | k rt n | j j rD| j j rD| j j rD| j j j | j n d S( sN Read a wire format DNS message and build a dns.message.Message
object.i s !HHHHHHN( t lenR} R R R R~ R R R R R6 R: R+ R R R R R R R R R R* R( R) t update( R. t lR t ancountt aucountt adcount( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyt read s$ 7
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} | j | S( s) Convert a DNS wire format message into a message
object.
@param keyring: The keyring to use if the message is signed.
@type keyring: dict
@param request_mac: If the message is a response to a TSIG-signed request,
I{request_mac} should be set to the MAC of that request.
@type request_mac: string
@param xfr: Is this message part of a zone transfer?
@type xfr: bool
@param origin: If the message is part of a zone transfer, I{origin}
should be the origin name of the zone.
@type origin: dns.name.Name object
@param tsig_ctx: The ongoing TSIG context, used when validating zone
transfers.
@type tsig_ctx: hmac.HMAC object
@param multi: Is this message part of a multiple message sequence?
@type multi: bool
@param first: Is this message standalone, or the first of a multi
message sequence?
@type first: bool
@param question_only: Read only up to the end of the question section?
@type question_only: bool
@param one_rr_per_rrset: Put each RR into its own RRset
@type one_rr_per_rrset: bool
@param ignore_trailing: Ignore trailing junk at end of request?
@type ignore_trailing: bool
@raises ShortHeader: The message is less than 12 octets long.
@raises TrailingJunk: There were octets in the message past the end
of the proper DNS message.
@raises BadEDNS: An OPT record was in the wrong section, or occurred more
than once.
@raises BadTSIG: A TSIG record was not the last record of the additional
data section.
@rtype: dns.message.Message objectR i (
R R R R& R' R( R* R, Rz R (
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t _TextReaderc B s; e Z d Z d Z d Z d Z d Z d Z RS( s Text format reader.
@ivar tok: the tokenizer
@type tok: dns.tokenizer.Tokenizer object
@ivar message: The message object being built
@type message: dns.message.Message object
@ivar updating: Is the message a dynamic update?
@type updating: bool
@ivar zone_rdclass: The class of the zone in messages which are
DNS dynamic updates.
@type zone_rdclass: int
@ivar last_name: The most recently read name when building a message object
from text format.
@type last_name: dns.name.Name object
c C sC | | _ t j j | | _ d | _ t j j | _ t
| _ d S( N( R~ R t tokenizert Tokenizert tokR t last_nameR R R R% R ( R. t textR~ ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR/ , s
c C s | j j } | j } | d k r< | j j | j _ n:| d k r x^ t r | j j } | j s | j j | Pn | j j t
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j j | j B| j _ qDWn | d k r| j j | j _ | j j d k rvd | j _ qvn | d k r6| j j } | j j t
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j j | n t | j j d
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sr t j j n yC t j
j | j } | j j } | j
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j } n Xt j j | j } | j j | j j | | | d t d t | j rB| | _ n | j j d S( s7 Process one line from the text format question section.t want_leadingRV RW N( R RL R+ t
is_whitespaceR RQ Rl Rt R R R R t SyntaxErrorR R Rx R~ RY R R R R ( R. RJ R RQ RR RS ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyt _question_linea s. c
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sx t j j n y@ t
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rt j j n t j j } n Xt j j | j } | j j } | j s| j j | t j j | | | j d } | j } n d } t j j } | j j | | | | | | t | j }
| d k rc|
j | | n d S( sf Process one line from the text format answer, authority, or
additional data sections.
R i N( R R RL R+ R R RQ Rl Rt R R R R R R R Ry R R Rx t
is_eol_or_eofR R RT R~ RY R R ( R. RJ RU R RQ R RR RS R RT R@ ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyt _rr_line~ sT
$ c C sR | j } d } x<| j j t t } | j r7 Pn | j r1| j j } | d k rj | j } n | d k s | d k r | j } | j
j } n | d k s | d k r | j } | j
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} nT | d k s | d k r | j } | j
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sN Read a text format DNS message and build a dns.message.Message
object.t HEADERt QUESTIONt ZONER_ t PREREQR` t UPDATERb N( R R R RL R+ R t
is_commentRt t upperR R~ R R R R R R R ( R. t line_methodRJ R t u( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR s4
( R R R R/ R R R R ( ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyR s . 5c C s& t } t | | } | j | S( s Convert the text format message into a message object.
@param text: The text format message.
@type text: string
@raises UnknownHeaderField:
@raises dns.exception.SyntaxError:
@rtype: dns.message.Message object( R R R ( R R R ( ( s1 /usr/lib64/python2.7/site-packages/dns/message.pyRl s
c C s t j d k r t } d } n t } d } t | | rQ t | | } t } n t } z t | } Wd | r} | j n X| S( s Read the next text format message from the specified file.
@param f: file or string. If I{f} is a string, it is treated
as the name of a file to open.
@raises UnknownHeaderField:
@raises dns.exception.SyntaxError:
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| j | | | | | | j | | S( sW Make a query message.
The query name, type, and class may all be specified either
as objects of the appropriate type, or as strings.
The query will have a randomly choosen query id, and its DNS flags
will be set to dns.flags.RD.
@param qname: The query name.
@type qname: dns.name.Name object or string
@param rdtype: The desired rdata type.
@type rdtype: int
@param rdclass: The desired rdata class; the default is class IN.
@type rdclass: int
@param use_edns: The EDNS level to use; the default is None (no EDNS).
See the description of dns.message.Message.use_edns() for the possible
values for use_edns and their meanings.
@type use_edns: int or bool or None
@param want_dnssec: Should the query indicate that DNSSEC is desired?
@type want_dnssec: bool
@param ednsflags: EDNS flag values.
@type ednsflags: int
@param payload: The EDNS sender's payload field, which is the maximum
size of UDP datagram the sender can handle.
@type payload: int
@param request_payload: The EDNS payload size to use when sending
this message. If not specified, defaults to the value of payload.
@type request_payload: int or None
@param options: The EDNS options
@type options: None or list of dns.edns.Option objects
@see: RFC 2671
@rtype: dns.message.Message objectRV RW ( RA Rj Rk R RQ Rl Rx R R R t RDRY R R+ Ro Rr (
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| j d k r | j d d | | j n | j r | j | j | j | d d d | j | j | _ n | S( s Make a message which is a response for the specified query.
The message returned is really a response skeleton; it has all
of the infrastructure required of a response, but none of the
content.
The response's question section is a shallow copy of the query's
question section, so the query's question RRsets should not be
changed.
@param query: the query to respond to
@type query: dns.message.Message object
@param recursion_available: should RA be set in the response?
@type recursion_available: bool
@param our_payload: payload size to advertise in EDNS responses; default
is 8192.
@type our_payload: int
@param fudge: TSIG time fudge; default is 300 seconds.
@type fudge: int
@rtype: dns.message.Message objects& specified query message is not a queryi R
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