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Viewing File: /usr/lib64/python2.7/site-packages/dns/resolver.pyo

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@var default_resolver: The default resolver object
@type default_resolver: dns.resolver.Resolver objecti    Ntwin32tNXDOMAINcBseZdZRS(sThe query name does not exist.(t__name__t
__module__t__doc__(((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyR.stYXDOMAINcBseZdZRS(s4The query name is too long after DNAME substitution.(RRR(((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyR2stNoAnswercBseZdZRS(s7The response did not contain an answer to the question.(RRR(((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyR<st
NoNameserverscBseZdZRS(s<No non-broken nameservers are available to answer the query.(RRR(((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyR@stNotAbsolutecBseZdZRS(sSRaised if an absolute domain name is required but a relative name
    was provided.(RRR(((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyRDst	NoRootSOAcBseZdZRS(sYRaised if for some reason there is no SOA at the root name.
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NstAnswercBsYeZdZedДZdДZdДZdДZdДZdДZ	dДZ
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    Instances of this class bundle up the result of a successful DNS
    resolution.

    For convenience, the answer object implements much of the sequence
    protocol, forwarding to its rrset.  E.g. "for a in answer" is
    equivalent to "for a in answer.rrset", "answer[i]" is equivalent
    to "answer.rrset[i]", and "answer[i:j]" is equivalent to
    "answer.rrset[i:j]".

    Note that CNAMEs or DNAMEs in the response may mean that answer
    node's name might not be the query name.

    @ivar qname: The query name
    @type qname: dns.name.Name object
    @ivar rdtype: The query type
    @type rdtype: int
    @ivar rdclass: The query class
    @type rdclass: int
    @ivar response: The response message
    @type response: dns.message.Message object
    @ivar rrset: The answer
    @type rrset: dns.rrset.RRset object
    @ivar expiration: The time when the answer expires
    @type expiration: float (seconds since the epoch)
    @ivar canonical_name: The canonical name of the query name
    @type canonical_name: dns.name.Name object
    cCs^||_||_||_||_d}d}x#tddГD]}yG|j|j|||Г}|dks|j|krЛ|j}nPWq@t	k
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    @ivar data: A dictionary of cached data
    @type data: dict
    @ivar cleaning_interval: The number of seconds between cleanings.  The
    default is 300 (5 minutes).
    @type cleaning_interval: float
    @ivar next_cleaning: The time the cache should next be cleaned (in seconds
    since the epoch.)
    @type next_cleaning: float
    g└r@cCs;i|_||_tjГ|j|_tjГ|_dS(s╗Initialize a DNS cache.

        @param cleaning_interval: the number of seconds between periodic
        cleanings.  The default is 300.0
        @type cleaning_interval: float.
        N(tdatatcleaning_intervalR"t
next_cleaningt
_threadingtLocktlock(R$R=((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyR+╓s		cCsЮtjГ}|j|krЪg}x<|jjГD]+\}}|j|kr1|j|Гq1q1Wx|D]}|j|=qgWtjГ}||j|_ndS(s&Clean the cache if it's time to do so.N(R"R>R<t	iteritemsR#tappendR=(R$tnowtkeys_to_deletetktv((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyt_maybe_cleanуs
cCskzV|jjГ|jГ|jj|Г}|dksM|jtjГkrQdS|SWd|jjГXdS(s)Get the answer associated with I{key}.  Returns None if
        no answer is cached for the key.
        @param key: the key
        @type key: (dns.name.Name, int, int) tuple whose values are the
        query name, rdtype, and rdclass.
        @rtype: dns.resolver.Answer object or None
        N(	RAtacquireRHR<tgetRR#R"trelease(R$tkeyRG((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyRJёs	
!cCs=z(|jjГ|jГ||j|<Wd|jjГXdS(sAssociate key and value in the cache.
        @param key: the key
        @type key: (dns.name.Name, int, int) tuple whose values are the
        query name, rdtype, and rdclass.
        @param value: The answer being cached
        @type value: dns.resolver.Answer object
        N(RARIRHR<RK(R$RLtvalue((s2/usr/lib64/python2.7/site-packages/dns/resolver.pytputs
	
cCssz^|jjГ|dk	r>|jj|Гr]|j|=q]ni|_tjГ|j|_Wd|jjГXdS(sцFlush the cache.

        If I{key} is specified, only that item is flushed.  Otherwise
        the entire cache is flushed.

        @param key: the key to flush
        @type key: (dns.name.Name, int, int) tuple or None
        N(	RARIRR<thas_keyR"R=R>RK(R$RL((s2/usr/lib64/python2.7/site-packages/dns/resolver.pytflushs

	N(	RRRR+RHRJRNRRP(((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyR;╔s
			tLRUCacheNodecBs2eZdZdДZdДZdДZdДZRS(sLRUCache node.
    cCs(||_||_||_||_dS(N(RLRMtprevtnext(R$RLRM((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyR+,s			cCs.|j|_||_||j_||_dS(N(RRRS(R$tnode((s2/usr/lib64/python2.7/site-packages/dns/resolver.pytlink_before2s	cCs.||_|j|_||j_||_dS(N(RRRS(R$RT((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyt
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			tLRUCachecBsAeZdZddДZdДZdДZdДZddДZRS(sOBounded least-recently-used DNS answer cache.

    This cache is better than the simple cache (above) if you're
    running a web crawler or other process that does a lot of
    resolutions.  The LRUCache has a maximum number of nodes, and when
    it is full, the least-recently used node is removed to make space
    for a new one.

    @ivar data: A dictionary of cached data
    @type data: dict
    @ivar sentinel: sentinel node for circular doubly linked list of nodes
    @type sentinel: LRUCacheNode object
    @ivar max_size: The maximum number of nodes
    @type max_size: int
    iаЖcCs;i|_|j|ГtddГ|_tjГ|_dS(sбInitialize a DNS cache.

        @param max_size: The maximum number of nodes to cache; the default is 100000.  Must be > 1.
        @type max_size: int
        N(R<tset_max_sizeRQRtsentinelR?R@RA(R$tmax_size((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyR+Ss	
cCs"|dkrd}n||_dS(Ni(R[(R$R[((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyRY^s	cCsТz}|jjГ|jj|Г}|dkr2dS|jГ|jjtjГkre|j|j	=dS|j
|jГ|jSWd|jjГXdS(s)Get the answer associated with I{key}.  Returns None if
        no answer is cached for the key.
        @param key: the key
        @type key: (dns.name.Name, int, int) tuple whose values are the
        query name, rdtype, and rdclass.
        @rtype: dns.resolver.Answer object or None
        N(
RARIR<RJRRWRMR#R"RLRVRZRK(R$RLRT((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyRJcs


cCs╠z╖|jjГ|jj|Г}|dk	rH|jГ|j|j=nx?t|jГ|jkrЙ|j	j
}|jГ|j|j=qKWt||Г}|j|j	Г||j|<Wd|jj
ГXdS(sAssociate key and value in the cache.
        @param key: the key
        @type key: (dns.name.Name, int, int) tuple whose values are the
        query name, rdtype, and rdclass.
        @param value: The answer being cached
        @type value: dns.resolver.Answer object
        N(RARIR<RJRRWRLR0R[RZRRRQRVRK(R$RLRMRT((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyRN{s


cCs╣zд|jjГ|dk	rW|jj|Г}|dk	rг|jГ|j|j=qгnL|jj}x4||jkrЩ|j}d|_	d|_|}qfWi|_Wd|jj
ГXdS(sцFlush the cache.

        If I{key} is specified, only that item is flushed.  Otherwise
        the entire cache is flushed.

        @param key: the key to flush
        @type key: (dns.name.Name, int, int) tuple or None
        N(RARIRR<RJRWRLRZRSRRRK(R$RLRTRS((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyRPУs	

			

N(	RRRR+RYRJRNRRP(((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyRXBs			tResolvercBs┼eZdZdedДZdДZdДZdДZdДZdДZ	dДZ
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dДZdejjdДZdДZdДZRS(s)DNS stub resolver

    @ivar domain: The domain of this host
    @type domain: dns.name.Name object
    @ivar nameservers: A list of nameservers to query.  Each nameserver is
    a string which contains the IP address of a nameserver.
    @type nameservers: list of strings
    @ivar search: The search list.  If the query name is a relative name,
    the resolver will construct an absolute query name by appending the search
    names one by one to the query name.
    @type search: list of dns.name.Name objects
    @ivar port: The port to which to send queries.  The default is 53.
    @type port: int
    @ivar timeout: The number of seconds to wait for a response from a
    server, before timing out.
    @type timeout: float
    @ivar lifetime: The total number of seconds to spend trying to get an
    answer to the question.  If the lifetime expires, a Timeout exception
    will occur.
    @type lifetime: float
    @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 key algorithm to use.  The default is
    dns.tsig.default_algorithm.
    @type keyalgorithm: string
    @ivar edns: The EDNS level to use.  The default is -1, no Edns.
    @type edns: int
    @ivar ednsflags: The EDNS flags
    @type ednsflags: int
    @ivar payload: The EDNS payload size.  The default is 0.
    @type payload: int
    @ivar flags: The message flags to use.  The default is None (i.e. not overwritten)
    @type flags: int
    @ivar cache: The cache to use.  The default is None.
    @type cache: dns.resolver.Cache object
    @ivar retry_servfail: should we retry a nameserver if it says SERVFAIL?
    The default is 'false'.
    @type retry_servfail: bool
    s/etc/resolv.confcCsI|jГ|rEtjdkr,|jГqE|rE|j|ГqEndS(sJInitialize a resolver instance.

        @param filename: The filename of a configuration file in
        standard /etc/resolv.conf format.  This parameter is meaningful
        only when I{configure} is true and the platform is POSIX.
        @type filename: string or file object
        @param configure: If True (the default), the resolver instance
        is configured in the normal fashion for the operating system
        the resolver is running on.  (I.e. a /etc/resolv.conf file on
        POSIX systems and from the registry on Windows systems.)
        @type configure: boolRN(tresettsystplatformt
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sоProcess f as a file in the /etc/resolv.conf format.  If f is
        a string, it is used as the name of the file to open; otherwise it
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2#cCsF|jdГdkrd}n$|jdГdkr<d}nd}|S(Nt it,(tfind(R$tentryt
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cCstjjt|ГГ|_dS(s"Configure a Domain registry entry.N(RR ReRВRh(R$Rh((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyt_config_win32_domainAscCsmt|Г}|j|Г}|j|Г}x<|D]4}||jkr1|jjtjj|ГГq1q1WdS(s"Configure a Search registry entry.N(RВRТRЖRkRCRR Re(R$RkRСtsearch_listts((s2/usr/lib64/python2.7/site-packages/dns/resolver.pyt_config_win32_searchFs
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rYd}nX|rp|j|ГndS(s%Extract DNS info from a registry key.t
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r_tj|dГ}nXz|j|ГWd|j	ГX|r@tj|dГ}zШd}xЛtr-yltj
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r)PqгXqгWWd|j	ГXnWd|j	ГXdS(s9Extract resolver configuration from the Windows registry.s2SYSTEM\CurrentControlSet\Services\Tcpip\Parameterss+SYSTEM\CurrentControlSet\Services\VxD\MSTCPNs=SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfacesii(RЯtConnectRegistryRtHKEY_LOCAL_MACHINERytOpenKeyR:tEnvironmentErrorRеtClosetEnumKeyt_win32_is_nic_enabled(R$tlmt	want_scant
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PqrW|
r1t:Вnt@|||||Г}|jrq|jjA|||f|Гn|S(	sQuery nameservers to find the answer to the question.

        The I{qname}, I{rdtype}, and I{rdclass} parameters may be objects
        of the appropriate type, or strings that can be converted into objects
        of the appropriate type.  E.g. For I{rdtype} the integer 2 and the
        the string 'NS' both mean to query for records with DNS rdata type NS.

        @param qname: the query name
        @type qname: dns.name.Name object or string
        @param rdtype: the query type
        @type rdtype: int or string
        @param rdclass: the query class
        @type rdclass: int or string
        @param tcp: use TCP to make the query (default is False).
        @type tcp: bool
        @param source: bind to this IP address (defaults to machine default IP).
        @type source: IP address in dotted quad notation
        @param raise_on_no_answer: raise NoAnswer if there's no answer
        (defaults is True).
        @type raise_on_no_answer: bool
        @param source_port: The port from which to send the message.
        The default is 0.
        @type source_port: int
        @rtype: dns.resolver.Answer instance
        @raises Timeout: no answers could be found in the specified lifetime
        @raises NXDOMAIN: the query name does not exist
        @raises YXDOMAIN: the query name is too long after DNAME substitution
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			cCsD||_|dkr.|jjГd|_n	||_||_dS(s─Add a TSIG signature to the query.

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    @param tcp: use TCP to make the query (default is False).
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