3 Z_]w@sdZddlZddlZddlZddlZddlmZddlmZddlmZddlm Z ddlm Z ddl Z dd Z e d Z x"e jD]Zee ee d eqWe jjjd d dgx&e jjD]Zee jee deqWx*e jjjD]Zee jjee deqWx,e jjjD]Zee jjee deqW[ eZdZdZejejdZejejdZeZejjddj dFkre!edrejej"dZddZ#ddZ$d d!Z%Gd"d#d#e j&j'Z(Gd$d%d%e)Z*Gd&d'd'e)Z+e+e*d(Z&ej,d)dd)fd*d+Z-d,d-Z.d.d/Z/d0d1Z0dGd2d3Z1d4d5Z2d6d7Z3d8d9Z4d:d;Z5ddddd?fd@dAZ7ed>dddfdBdCZ8dDdEZ9e8e j:_8e7e j:_7dS)Hz1greendns - non-blocking DNS support for Eventlet N)patcher) _socket_nodns)os)time)selectcCsttttd}tj|f|S)N)rrrsocket)rrrrrimport_patched) module_namemodulesr =/tmp/pip-build-yz_zf6az/eventlet/eventlet/support/greendns.pyr0s rdnszdns.Z dnskeybaseZdsbaseZtxtbasez dns.rdtypes.zdns.rdtypes.IN.zdns.rdtypes.ANY.g$@zLookup timed outzName or service not knownZEVENTLET_DEPRECATED_EAI_NODATA1yyes EAI_NODATAz#No address associated with hostnamec CsBt|tjsdSytjj|Wntjjk r8dSXdSdS)z+Return True if host is a valid IPv4 addressFTN) isinstancesix string_typesr Zipv4 inet_aton exception SyntaxError)hostr r r is_ipv4_addr[s rc CsRt|tjsdS|jddd}ytjj|Wntjjk rHdSXdSdS)z+Return True if host is a valid IPv6 addressF%rTN) rrrsplitr ipv6rrr)rr r r is_ipv6_addrgs rcCst|pt|S)z3Return True if host is a valid IPv4 or IPv6 address)rr)rr r r is_ip_addrtsr c@seZdZdZdddZdS) HostsAnswerz%Answer class for HostsResolver objectTcCsZd|_||_||_||_||_| r2|r2tjj||_t |drPt j |j nd|_ dS)a^Create a new answer :qname: A dns.name.Name instance of the query name :rdtype: The rdatatype of the query :rdclass: The rdataclass of the query :rrset: The dns.rrset.RRset with the response, must have ttl attribute :raise_on_no_answer: Whether to raise dns.resolver.NoAnswer if no answer. Nttlr) responseqnamerdtyperdclasscanonical_namer resolverNoAnswerrrsethasattrrr" expiration)selfr$r%r&r*raise_on_no_answerr r r __init__|s   zHostsAnswer.__init__N)T)__name__ __module__ __qualname____doc__r/r r r r r!ysr!c@s`eZdZdZejdejZdefddZ ddZ dd Z e j je jjd dd fd d ZddZdS) HostsResolverzClass to parse the hosts file Attributes ---------- :fname: The filename of the hosts file in use. :interval: The time between checking for hosts file modification z \s* # Leading space ([^\r\n#]*?) # The actual match, non-greedy so as not to include trailing space \s* # Trailing space (?:[#][^\r\n]+)? # Comments (?:$|[\r\n]+) # EOF or newline NcCshi|_i|_i|_||_||_|dkrPtjdkr8d|_ntjdkrPtjjd|_d|_ |jrd|j dS)Nposixz /etc/hostsntz'%SystemRoot%\system32\drivers\etc\hostsr) _v4_v6_aliasesintervalfnamernamepath expandvars _last_load_load)r-r;r:r r r r/s  zHostsResolver.__init__cCs`y$t|jd}|j}WdQRXWnttfk r<gSX|jdd}tjjd|j j |S)zRead the contents of the hosts file Return list of lines, comment lines and empty lines are excluded. Note that this performs disk I/O so can be blocking. rbNignore)errors) openr;readIOErrorOSErrordecodermovesfilterLINES_REfindall)r-fpfdataZudatar r r _readliness zHostsResolver._readlinescCs|j}|jj|jj|jjx|D]}|j}t|dkrFq,|jd}t|r`|j}nt |r,|j drtq,|j}nq,|jdj }|||<x&|D]}|j }|||<||j|<qWq,Wt j |_ dS)zjLoad hosts file This will unconditionally (re)load the data from the hosts file. rZfe80N)rOr7clearr8r9rlenpoprr startswithlowerrr?)r-lineslinepartsipZipmapcnamealiasr r r r@s.        zHostsResolver._loadFTc Cstj}|j|j|kr |jtjj}t|tj rF|}tj j |}nt |}|j }tjj|||} |j|j|| _|tjjkr|tjjkr|jj|} | r|jr|jj|dd} | r| jtjjjj||| n|tjjko|tjjkrL|jj|} | r*|jr*|jj|dd} | r| jtjjjj||| nv|tjjkr|tjjkr|jj|} | r|jr|jj|dd} | r| jtjjjj||tj j | t|||| |S)aYQuery the hosts file The known rdtypes are dns.rdatatype.A, dns.rdatatype.AAAA and dns.rdatatype.CNAME. The ``rdclass`` parameter must be dns.rdataclass.IN while the ``tcp`` and ``source`` parameters are ignored. Return a HostAnswer instance or raise a dns.resolver.NoAnswer exception. Nrr\r\)rr?r:r@r rdataclassINrrrr< from_textstrrUr*ZRRsetr" rdatatypeAr7getZ is_absoluteaddrdtypesAAAAr8CNAMEr9ANYr!) r-r$r%r&tcpsourcer.nowr<r*addrrZr r r querys>     zHostsResolver.querycCsbg}||jkr|j|}n|}|j|x*tj|jD]\}}||kr6|j|q6W|j||S)z1Return a list of all the aliases of a given cname)r9appendr iteritemsremove)r-hostnamealiasesZcannonr[rZr r r getaliasess    zHostsResolver.getaliases)r0r1r2r3recompileVERBOSErK HOSTS_TTLr/rOr@r rarbr]r^rmrsr r r r r4s  -r4c@sVeZdZdZdddZddZejjej j ddd ejjejj fd fd d Z d d Z dS) ResolverProxyzResolver class which can also use /etc/hosts Initialise with a HostsResolver instance in order for it to also use the hosts file. N/etc/resolv.confcCs||_||_|jdS)ahInitialise the resolver proxy :param hosts_resolver: An instance of HostsResolver to use. :param filename: The filename containing the resolver configuration. 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Behavior: 1. if hosts is enabled and contains answer, return it now 2. query nameservers for qname if use_network is True 3. if qname did not contain dots, pretend it was top-level domain, query "foobar." and append to previous result Nrz0.0.0.0csy|||}Wn(tk r6}z |d<dSd}~XnX|jdk rt|jrddkrb|d<ndjj|jdt|j7<dS)NrFrrPT) Exceptionr*rRZ union_update)Zfunargskwargsae)resultr r stepRs  z!ResolverProxy.query..stepcslddk r,r$ddkr$tjjdSddk rXsPtdtjj rXdtjjfddS)NrrPr)qnames)r r(r)rNXDOMAINr )r$r.rr r end`s  z ResolverProxy.query..endF)r.r)rrrr r<r_rzr]r^rmr~rRZ concatenateroot) r-r$r%r&rirjr.Z_hosts_rdtypes use_networkrrr )r$r.rr rm?s     zResolverProxy.queryc Cs||jr|jj|}ng}x^y|jj|tjj}Wn"tjjtjj fk rRPYqX|j dd|j D|dj }qW|S)z4Return a list of all the aliases of a given hostnamecss|]}t|jVqdS)N)r`target).0rrr r r sz+ResolverProxy.getaliases..r) rzrsr~rmr rargr(r)rextendr*r)r-rqrransr r r rs~szResolverProxy.getaliases)Nry)r0r1r2r3r/rQr rarbr]r^rfrmrsr r r r rx&s   .cSsg|] }|jqSr )r)rrr r r sz'_getaddrinfo_lookup..cSsg|]}d|jqS)z::ffff:)r)rrr r r rscSsg|] }|jqSr )r)rrr r r rs)FT)rAI_NUMERICHOSTEAI_NONAME_ERROR AF_UNSPECrrrrerrno EAI_AGAINrr*r AI_V4MAPPEDAI_ALLr`r$) rrflagsaddrserrrZqfamilyZanswerrr r r _getaddrinfo_lookups>    rcCs@t|tjr|jdjd}|dk r@t| r@t|||\}}n |}|g}|tjBdtj A@}g} d} xf|D]^} ytj | |||||} Wn6tj k r} z|tj @r| } wlWYdd} ~ XnX| j | qlW| s| r| tjtjd|tj @r.r.Nr\r\)rrrsr*r`r$)rqrrrrr$r r r gethostbyname_ex*s    rcCsy |\}}Wn2ttfk r>t|ts6~tdntYnX|tj@rX|tj@rXtt|ryDt j t j j |t jj}t|dkrtjd|djjdd}WnJt jjk r|tj@rtYn&t jjk r|tj@rtYnXnysr!         i  "( ( 5eH