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N)__name__ __module__ __qualname____doc__r r r r r8?sr8c@seZdZdZdZdZdZdZedZ ddZ ddZ d d Z d d Z d dZddZddZddZddZddZddZddZddZddZd S)!HTTPPageGettera Gets a resource via HTTP, then quits. Typically used with L{HTTPClientFactory}. Note that this class does not, by itself, do anything with the response. If you want to download a resource into a file, use L{HTTPPageDownloader} instead. @ivar _completelyDone: A boolean indicating whether any further requests are necessary after this one completes in order to provide a result to C{self.factory.deferred}. If it is C{False}, then a redirect is going to be followed. Otherwise, this protocol's connection is the last one before firing the result Deferred. 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NrurATwisted PageGetterrTFc Cs||_| |_d|_||_||_| |_|dkr0i}||_|dk rJt||_nt|_|dk r~|j dt t ||j dd||_ t ||_||d|_t|_t|_|j|jd|_dS)NrrHs connectionscloserw)rrrrrSrrYr+rQrcrrTrGr7r@rwaitingr"DeferredrdeferredaddBoth_waitForDisconnectresponse_headers) r]rr@rGrQrSrrYrrrr r r __init__ds2      zHTTPClientFactory.__init__cs|jfdd|jS)z Chain onto the _disconnectedDeferred, preserving C{passthrough}, so that the result is only available after the associated connection has been closed. csSrpr Zignored passthroughr r rtruz6HTTPClientFactory._waitForDisconnect..)r addCallback)r]rr rr rsz$HTTPClientFactory._waitForDisconnectcCsd|jj|jfS)Nz<%s: %s>) __class__r9rrqr r r __repr__szHTTPClientFactory.__repr__cCsLt|||_t|}|jr@|jr@|j|_|j|_|j|_|j|_ dSrp) r6striprURI fromBytesrNrPrO originFormrM)r]rurir r r rs   zHTTPClientFactory.setURLcCsHtj||}|j|_|j|_|jrDt|j|j}|j |j ||Srp) r# ClientFactory buildProtocolrrrr% callLaterrr_cancelTimeout)r]addrr timeoutCallr r r rszHTTPClientFactory.buildProtocolcCs|r||Srp)Zactivecancel)r]rrr r r rsz HTTPClientFactory._cancelTimeoutcCsd||_d|kr`|dD]H}d|kr|d}|d}||dd\}}||j|<qdS)z Parse the response HTTP headers. @param headers: The response HTTP headers. @type headers: L{dict} s set-cookierI;rrwN)rsplitlstriprY)r]rQraZ cookpartsZcookkvr r r rls  zHTTPClientFactory.gotHeaderscCs||||_|_|_dS)aR Set the status of the request on us. @param version: The HTTP version. @type version: L{bytes} @param status: The HTTP status code, an integer represented as a bytestring. @type status: L{bytes} @param message: The HTTP status message. @type message: L{bytes} N)rfrgrhrjr r r ris zHTTPClientFactory.gotStatuscCs|jrd|_|j|dSr)rrr)r]rr r r rszHTTPClientFactory.pagecCs|jrd|_|j|dSr)rrerrbackrr r r rszHTTPClientFactory.noPagecCs(|jr$d|_|jd|j|dS)z When a connection attempt fails, the request cannot be issued. 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NrATwisted clientFrTrc  Csd|_t|ttfrl||_d|_|rrtj|jrrtj |j} | rr| |_|dkrVi}dt | d|d<n||_t j |||||||| | | | d dS)Nrsbytes=-srange) r@rGrQrSrrYrrr) requestedPartial isinstancestrrfileNamefileosrMexistsgetsizerrr)r]rZ fileOrNamer@rGrQrSZsupportPartialrrYrrrZ fileLengthr r r rs2zHTTPDownloader.__init__cCsTt|||jrP|dd}|s,d|_dSt|d\}}}||jkrPd|_dS)Ns content-ranger)rrlrrRr!ZparseContentRange)r]rQZ contentRangestartendZ realLengthr r r rls   zHTTPDownloader.gotHeaderscCs.|rt|jd}|ddn t|jd}|S)Nzrb+rwb)openrseek)r]rrr r r openFiles   zHTTPDownloader.openFilecCsV|r|jstd|jrRz|js,|||_Wn"tk rP|jtYnXdS)zCalled on page download start. @param partialContent: tells us if the download is partial download we requested. z?we shouldn't get partial content response if we didn't want it!N) r ValueErrorrrrIOErrorrrrrr r r rs zHTTPDownloader.pageStartcCsH|js dSz|j|Wn(tk rBd|_|jtYnXdSrp)rr\rrrrrr r r r+szHTTPDownloader.pagePartcCsJ|jrFd|_|jr:z|jWn|jdYnX|j|dS)zk Close the storage file and errback the waiting L{Deferred} with the given reason. rz!Error closing HTTPDownloader fileN)rrclose_logfailurerrrr r r r6szHTTPDownloader.noPagecCsVd|_|jsdSz|jWn$tk rB|jtYdSX|j|jdSr) rrrrrrrrr`rqr r r rEszHTTPDownloader.pageEnd) rANNrFrNTrF)r9r:r;r<rr#r`r5rrrlrrrrrr r r r rs*  rc@s:eZdZdZddZed ddZddZed d Z dS) rzd A URI object. @see: U{https://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-21} c Cs:||_||_|d|_||_||_||_||_||_dS)a @type scheme: L{bytes} @param scheme: URI scheme specifier. @type netloc: L{bytes} @param netloc: Network location component. @type host: L{bytes} @param host: Host name. 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NrErFrCrDrw)rr!urlparsersplitintr) clsrZ defaultPortrNrrMrrrrPrOr r r r~s  z URI.fromBytescCs t|j|j|j|j|j|jfS)z Assemble the individual parts of the I{URI} into a fully formed I{URI}. @rtype: C{bytes} @return: A fully formed I{URI}. )rrNrrMrrrrqr r r toBytess z URI.toBytescCs*tdd|j|j|jdf}|dkr&d}|S)a! The absolute I{URI} path including I{URI} parameters, query string and fragment identifier. @see: U{https://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-21#section-5.3} @return: The absolute path in original form. @rtype: L{bytes} ru/)rrMrr)r]rMr r r rs zURI.originForm)N) r9r:r;r<r classmethodrrpropertyrr r r r rRs& " rcCs0t|\}}tt||\}}t|d|p*|S)a Construct a full ("absolute") URL by combining a "base URL" with another URL. Informally, this uses components of the base URL, in particular the addressing scheme, the network location and (part of) the path, to provide missing components in the relative URL. 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N)r8Zresumerqr r r resumeProducing{sz FileBodyProducer.resumeProducingN) r9r:r;r<r$rr3r:r@r=rDrEr r r r r/s r/c@s(eZdZdZddZddZddZdS) _HTTP11ClientFactoryaa A factory for L{HTTP11ClientProtocol}, used by L{HTTPConnectionPool}. @ivar _quiescentCallback: The quiescent callback to be passed to protocol instances, used to return them to the connection pool. @ivar _metadata: Metadata about the low-level connection details, used to make the repr more useful. @since: 11.1 cCs||_||_dSrp)_quiescentCallback _metadata)r]quiescentCallbackZmetadatar r r rsz_HTTP11ClientFactory.__init__cCsd|j|jS)Nz_HTTP11ClientFactory({}, {}))formatrGrHrqr r r rsz_HTTP11ClientFactory.__repr__cCs t|jSrp)r rG)r]rr r r rsz"_HTTP11ClientFactory.buildProtocolN)r9r:r;r<rrrr r r r rFs rFc@s(eZdZdZddZddZddZdS) _RetryingHTTP11ClientProtocolz A wrapper for L{HTTP11ClientProtocol} that automatically retries requests. @ivar _clientProtocol: The underlying L{HTTP11ClientProtocol}. @ivar _newConnection: A callable that creates a new connection for a retry. cCs||_||_dSrp)_clientProtocol_newConnection)r]ZclientProtocol newConnectionr r r rsz&_RetryingHTTP11ClientProtocol.__init__cCsX|dkr dSt|tttfs dSt|trH|jD]}|tjr0dSq0|dk rTdSdS)a Indicate whether request should be retried. 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[])rBrC)rErFrD)r&rr)r]rNrPrOr r r _computeHostValues    z_AgentBase._computeHostValuec svtdkrtdsDdjjjj ||}fdd} | | |S)zk Issue a new request, given the endpoint and the path sent as part of the request. Nr>c s |tjjjdS)N)rY parsedURI)rSrZ _constructrrrY)protorPrQr@rx requestPathr]r r cbConnecteds  z4_AgentBase._requestWithEndpoint..cbConnected) r7r4 hasHeadercopy addRawHeaderrwrNrPrOrrrcr) r]r_r^r@rxrQrPr{r?r|r rzr _requestWithEndpoints   z_AgentBase._requestWithEndpointN)r9r:r;r<rrwrr r r r rp~s  rpc@s eZdZdZddZddZdS)_StandardEndpointFactorya Standard HTTP endpoint destinations - TCP for HTTP, TCP+TLS for HTTPS. @ivar _policyForHTTPS: A web context factory which will be used to create SSL context objects for any SSL connections the agent needs to make. @ivar _connectTimeout: If not L{None}, the timeout passed to L{HostnameEndpoint} for specifying the connection timeout. @ivar _bindAddress: If not L{None}, the address passed to L{HostnameEndpoint} for specifying the local address to bind to. cCs||_||_||_||_dS)a @param reactor: A provider to use to create endpoints. @type reactor: see L{HostnameEndpoint.__init__} for acceptable reactor types. @param contextFactory: A factory for TLS contexts, to control the verification parameters of OpenSSL. @type contextFactory: L{IPolicyForHTTPS}. @param connectTimeout: The amount of time that this L{Agent} will wait for the peer to accept a connection. @type connectTimeout: L{float} or L{None} @param bindAddress: The local address for client sockets to bind to. @type bindAddress: L{bytes} or L{None} N)rX_policyForHTTPS_connectTimeout _bindAddress)r]r%rconnectTimeout bindAddressr r r rsz!_StandardEndpointFactory.__init__cCsi}|jdk r|j|d<|j|d<zt|j}Wn$tk rTtdj|dYnXt|j||j f|}|j dkrx|S|j dkr|j |j|j }t ||Std|j fdS) z Connect directly over TCP for C{b'http'} scheme, and TLS for C{b'https'}. @param uri: L{URI} to connect to. @return: Endpoint to connect to. @rtype: L{IStreamClientEndpoint} NrrzdThe host of the provided URI ({uri.host!r}) contains non-ASCII octets, it should be ASCII decodable.rrBrEzUnsupported scheme: %r)rrrrPUnicodeDecodeErrorrrJr)rXrOrNrr(r*r )r]rrrPr^ZconnectionCreatorr r r endpointForURIs&        z'_StandardEndpointFactory.endpointForURIN)r9r:r;r<rrr r r r rs rc@sLeZdZdZedddfddZed ddZddZd d Z dd d Z dS)Agenta+ L{Agent} is a very basic HTTP client. It supports I{HTTP} and I{HTTPS} scheme URIs. @ivar _pool: An L{HTTPConnectionPool} instance. @ivar _endpointFactory: The L{IAgentEndpointFactory} which will be used to create endpoints for outgoing connections. @since: 9.0 NcCsJt|s*tjt|ddtdt|}t||||}||||dS)a Create an L{Agent}. @param reactor: A reactor for this L{Agent} to place outgoing connections. @type reactor: see L{HostnameEndpoint.__init__} for acceptable reactor types. @param contextFactory: A factory for TLS contexts, to control the verification parameters of OpenSSL. 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Since Twisted 14.0, you must pass a provider of IPolicyForHTTPS.r) stacklevelcategoryN) r2Z providedBywarningswarnrhDeprecationWarningr-r_init)r]r%rrrrsendpointFactoryr r r rs  zAgent.__init__cCs||}|||||S)a Create a new L{Agent} that will use the endpoint factory to figure out how to connect to the server. @param reactor: A reactor for this L{Agent} to place outgoing connections. @type reactor: see L{HostnameEndpoint.__init__} for acceptable reactor types. @param endpointFactory: Used to construct endpoints which the HTTP client will connect with. @type endpointFactory: an L{IAgentEndpointFactory} provider. @param pool: An L{HTTPConnectionPool} instance, or L{None}, in which case a non-persistent L{HTTPConnectionPool} instance will be created. @type pool: L{HTTPConnectionPool} @return: A new L{Agent}. )__new__r)rr%rrsrSr r r usingEndpointFactory:s zAgent.usingEndpointFactorycCst|||||_dS)a Initialize a new L{Agent}. @param reactor: A reactor for this L{Agent} to place outgoing connections. @type reactor: see L{HostnameEndpoint.__init__} for acceptable reactor types. @param endpointFactory: Used to construct endpoints which the HTTP client will connect with. @type endpointFactory: an L{IAgentEndpointFactory} provider. @param pool: An L{HTTPConnectionPool} instance, or L{None}, in which case a non-persistent L{HTTPConnectionPool} instance will be created. @type pool: L{HTTPConnectionPool} @return: A new L{Agent}. N)rpr_endpointFactory)r]r%rrsr r r rUsz Agent._initcCs |j|S)z Get an endpoint for the given URI, using C{self._endpointFactory}. @param uri: The URI of the request. @type uri: L{URI} @return: An endpoint which can be used to connect to given address. )rr)r]rr r r _getEndpointms zAgent._getEndpointc Csnt|}t|}z||}Wn tk rDttYSX|j |j |j f}| |||||||j S)a) Issue a request to the server indicated by the given C{uri}. An existing connection from the connection pool may be used or a new one may be created. I{HTTP} and I{HTTPS} schemes are supported in C{uri}. @see: L{twisted.web.iweb.IAgent.request} )r6rrrrr r"ZfailrrNrPrOrr)r]r@rrQrPrxr^r_r r r rSys   z Agent.request)N)NN) r9r:r;r<r%rrrrrrSr r r r rs  ,  rc@s$eZdZdZdddZdddZdS) ProxyAgentz An HTTP agent able to cross HTTP proxies. @ivar _proxyEndpoint: The endpoint used to connect to the proxy. @since: 11.1 NcCs,|dkrddlm}t|||||_dS)Nr)r%)rr%rpr_proxyEndpoint)r]r^r%rsr r r rs zProxyAgent.__init__c Cs4t|}d|jf}|||j|t||||S)z? Issue a new request via the configured proxy. z http-proxy)r6rrrrr)r]r@rrQrPr_r r r rSs   zProxyAgent.request)NN)NN)r9r:r;r<rrSr r r r rs rc@sReZdZdZddZddZddZdd Zdd d Zd dZ ddZ ddZ d S)_FakeUrllib2Requesta A fake C{urllib2.Request} object for C{cookielib} to work with. @see: U{http://docs.python.org/library/urllib2.html#request-objects} @type uri: native L{str} @ivar uri: Request URI. @type headers: L{twisted.web.http_headers.Headers} @ivar headers: Request headers. @type type: native L{str} @ivar type: The scheme of the URI. @type host: native L{str} @ivar host: The host[:port] of the URI. @since: 11.1 cCszt||_t|_t|}t|j|_t|j|_|j|j fdkr\|jdt |j 7_t rvt|j|_ dd|_ dS)zn Create a fake Urllib2 request. @param uri: Request URI. @type uri: L{bytes} rv:cSsdSrqr )rr r r rtruz._FakeUrllib2Request.__init__..N)rrr4rQrrrNtyperPrOrrZorigin_req_hostZ unverifiable)r]rZ_urir r r rs     z_FakeUrllib2Request.__init__cCs|jt|Srp)rQr}r)r]headerr r r has_headersz_FakeUrllib2Request.has_headercCs|jt|t|dSrp)rQrr)r]namer`r r r add_unredirected_headersz+_FakeUrllib2Request.add_unredirected_headercCs|jSrprrqr r r get_full_urlsz _FakeUrllib2Request.get_full_urlNcCs4|jt||}|dk r0dd|D}|dSdS)NcSsg|] }t|qSr rr xr r r r sz2_FakeUrllib2Request.get_header..r)rQ getRawHeadersr)r]rdefaultrQr r r get_headers z_FakeUrllib2Request.get_headercCs|jSrp)rPrqr r r get_hostsz_FakeUrllib2Request.get_hostcCs|jSrp)rrqr r r get_typesz_FakeUrllib2Request.get_typecCsdSrqr rqr r r is_unverifiablesz#_FakeUrllib2Request.is_unverifiable)N) r9r:r;r<rrrrrrrrr r r r rs rc@s eZdZdZddZddZdS)_FakeUrllib2Responsez A fake C{urllib2.Response} object for C{cookielib} to work with. @type response: C{twisted.web.iweb.IResponse} @ivar response: Underlying Twisted Web response. @since: 11.1 cCs ||_dSrprrr r r r sz_FakeUrllib2Response.__init__csGfdddt}|S)Ncs$eZdZfddZfddZdS)z(_FakeUrllib2Response.info.._Metacsjj|g}|Srp)rrQr)zelfrrQrqr r getheaderssz3_FakeUrllib2Response.info.._Meta.getheaderscs&jjt||}dd|D}|S)NcSsg|] }t|qSr rrr r r r szD_FakeUrllib2Response.info.._Meta.get_all..)rrQrr)rrrrQhrqr r get_alls z0_FakeUrllib2Response.info.._Meta.get_allN)r9r:r;rrr rqr r _Metas r)object)r]rr rqr infos z_FakeUrllib2Response.infoN)r9r:r;r<rrr r r r rsrc@s*eZdZdZddZd ddZddZdS) CookieAgentaj L{CookieAgent} extends the basic L{Agent} to add RFC-compliant handling of HTTP cookies. Cookies are written to and extracted from a C{cookielib.CookieJar} instance. The same cookie jar instance will be used for any requests through this agent, mutating it whenever a I{Set-Cookie} header appears in a response. @type _agent: L{twisted.web.client.Agent} @ivar _agent: Underlying Twisted Web agent to issue requests through. @type cookieJar: C{cookielib.CookieJar} @ivar cookieJar: Initialized cookie jar to read cookies from and store cookies to. @since: 11.1 cCs||_||_dSrp)_agent cookieJar)r]rSrr r r r2szCookieAgent.__init__NcCs||dkrt}t|}|dsX|j||dd}|dk rX|}|dt||j ||||}| |j ||S)a Issue a new request to the wrapped L{Agent}. Send a I{Cookie} header if a cookie for C{uri} is stored in L{CookieAgent.cookieJar}. Cookies are automatically extracted and stored from requests. If a C{'cookie'} header appears in C{headers} it will override the automatic cookie header obtained from the cookie jar. @see: L{Agent.request} Nr?ZCookie) r4rr}rZadd_cookie_headerrr~rrrrSr_extractCookies)r]r@rrQrPZ lastRequestZ cookieHeaderr?r r r rS7s    zCookieAgent.requestcCst|}|j|||S)z Extract response cookies and store them in the cookie jar. @type response: L{twisted.web.iweb.IResponse} @param response: Twisted Web response. @param request: A urllib2 compatible request object. )rrZextract_cookies)r]rrSZrespr r r rUs zCookieAgent._extractCookies)NN)r9r:r;r<rrSrr r r r rs rc@s eZdZdZddZddZdS) GzipDecoderz A wrapper for a L{Response} instance which handles gzip'ed body. @ivar original: The original L{Response} object. @since: 11.1 cCs||_t|_dSrp)originalr.rrr r r rmszGzipDecoder.__init__cCs|jt||jdS)zf Override C{deliverBody} to wrap the given C{protocol} with L{_GzipProtocol}. N)r deliverBody _GzipProtocol)r]r#r r r rrszGzipDecoder.deliverBodyN)r9r:r;r<rrr r r r rdsrc@s(eZdZdZddZddZddZdS) ra0 A L{Protocol} implementation which wraps another one, transparently decompressing received data. @ivar _zlibDecompress: A zlib decompress object used to decompress the data stream. @ivar _response: A reference to the original response, in case of errors. @since: 11.1 cCs"||_||_tdtj|_dS)Nr)r _responsezlibZ decompressobjZ MAX_WBITS_zlibDecompress)r]r#rr r r rsz_GzipProtocol.__init__cCsLz|j|}Wn&tjk r6ttg|jYnX|rH|j|dS)zz Decompress C{data} with the zlib decompressor, forwarding the raw data to the original protocol. N) r decompressrr-rrrr dataReceived)r]r^rawDatar r r rs z_GzipProtocol.dataReceivedcCsXz|j}Wn(tjk r6t|tg|jYnX|rH|j||j |dS)zr Forward the connection lost event, flushing remaining data from the decompressor if any. N) rflushrr-rrrrrr)r]rrr r r rs z_GzipProtocol.connectionLostNr9r:r;r<rrrr r r r r{s  rc@s*eZdZdZddZd ddZddZdS) ContentDecoderAgenta^ An L{Agent} wrapper to handle encoded content. It takes care of declaring the support for content in the I{Accept-Encoding} header, and automatically decompresses the received data if it's effectively using compression. @param decoders: A list or tuple of (name, decoder) objects. The name declares which decoding the decoder supports, and the decoder must return a response object when called/instantiated. For example, C{(('gzip', GzipDecoder))}. The order determines how the decoders are going to be advertized to the server. @since: 11.1 cCs*||_t||_ddd|D|_dS)N,cSsg|] }|dqS)rr )r decoderr r r r sz0ContentDecoderAgent.__init__..)rdict _decodersrZ _supported)r]rSZdecodersr r r rs zContentDecoderAgent.__init__NcCsD|dkrt}n|}|d|j|j||||}||jS)zv Send a client request which declares supporting compressed content. @see: L{Agent.request}. Nsaccept-encoding)r4r~rrrrSr_handleResponser]r@rrQrPrr r r rSs zContentDecoderAgent.requestcCs|jdg}d|d}|rZ|}|j|}|dk rL||}q||qZq|rv|j dd|gn |j d|S)zX Check if the response is encoded, and wrap it to handle decompression. scontent-encodingrN) rQrrZrr_rrrRrXZ setRawHeadersZ removeHeader)r]rZcontentEncodingHeadersrrr r r rs&      z#ContentDecoderAgent._handleResponse)NN)r9r:r;r<rrSrr r r r rs rs AuthorizationrJsCookie2sProxy-AuthorizationsWWW-Authenticatec@sbeZdZdZejejejgZej gZ de e e edddZddd Zd d Zd d ZddZdS) RedirectAgenta An L{Agent} wrapper which handles HTTP redirects. The implementation is rather strict: 301 and 302 behaves like 307, not redirecting automatically on methods different from I{GET} and I{HEAD}. See L{BrowserLikeRedirectAgent} for a redirecting Agent that behaves more like a web browser. @param redirectLimit: The maximum number of times the agent is allowed to follow redirects before failing with a L{error.InfiniteRedirection}. @param sensitiveHeaderNames: An iterable of C{bytes} enumerating the names of headers that must not be transmitted when redirecting to a different origins. 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Unlike L{RedirectAgent}, the implementation is more relaxed: 301 and 302 behave like 303, redirecting automatically on any method and altering the redirect request to a I{GET}. @see: L{RedirectAgent} @since: 13.1 N) r9r:r;r<r!rrrrrrr r r r rys rc@s(eZdZdZddZddZddZdS) _ReadBodyProtocolak Protocol that collects data sent to it. This is a helper for L{IResponse.deliverBody}, which collects the body and fires a deferred with it. @ivar deferred: See L{__init__}. @ivar status: See L{__init__}. @ivar message: See L{__init__}. @ivar dataBuffer: list of byte-strings received @type dataBuffer: L{list} of L{bytes} cCs||_||_||_g|_dS)a# @param status: Status of L{IResponse} @ivar status: L{int} @param message: Message of L{IResponse} @type message: L{bytes} @param deferred: deferred to fire when response is complete @type deferred: L{Deferred} firing with L{bytes} N)rrgrh dataBuffer)r]rgrhrr r r rs z_ReadBodyProtocol.__init__cCs|j|dS)z? Accumulate some more bytes from the response. 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