B 4\au@sdZddlZddlZddlZddlZddlZddlZddlZddlZddl Z ddl Z ddl Z ddl m Z ddl mZddlmZddlmZddlmZmZmZmZmZmZmZmZmZmZmZmZm Z m!Z!m"Z"dd l#m$Z$dd l%m&Z&dd l'm(Z(m)Z)m*Z*m+Z+d Z,e-Z.d ddZ/ej0dkr2ddZ1ddZddZ2ddZ3dhddZ4ddZ5ddZ6d d!Z7d"d#Z8d$d%Z9d&d'Z:did(d)Z;d*d+Zd0d1Z?d2d3Z@d4d5ZAd6d7ZBd8d9ZCeDd:ZEd;d<ZFd=d>ZGd?d@ZHdAdBZIdCdDZJdEdFZKejLdGdHZMdIdJZNdjdKdLZOdMdNZPdkdPdQZQdRdSZRdTdUZSdVTdWZUeUdXZVeUdYZWdZd[ZXd\d]ZYd^d_ZZe[d`Z\e[daZ]dbdcZ^dddeZ_dfdgZ`dS)lz requests.utils ~~~~~~~~~~~~~~ This module provides utility functions that are used within Requests that are also useful for external consumption. N) __version__)certs)to_native_string)parse_http_list)quoteurlparsebytesstr OrderedDictunquote getproxies proxy_bypass urlunparse basestring integer_typesis_py3proxy_bypass_environmentgetproxies_environmentMapping)cookiejar_from_dict)CaseInsensitiveDict) InvalidURL InvalidHeaderFileModeWarningUnrewindableBodyError)z.netrc_netrcPi)ZhttpZhttpswin32cCsytrddl}nddl}Wntk r.dSXy6||jd}t||dd}||dd}Wntk rzdSX|r|sdS| d}xX|D]P}|dkrd|krd S| dd }| d d }| d d}t ||t j rd SqWdS)NrFz;Software\Microsoft\Windows\CurrentVersion\Internet SettingsZ ProxyEnableZ ProxyOverride;z.Tz\.*z.*?)rwinreg_winreg ImportErrorOpenKeyHKEY_CURRENT_USERintZ QueryValueExOSErrorsplitreplacerematchI)hostr#ZinternetSettingsZ proxyEnableZ proxyOverrideZtestr0-lib/python3.7/site-packages/requests/utils.pyproxy_bypass_registry/s8        r2cCstrt|St|SdS)zReturn True, if the host should be bypassed. Checks proxy settings gathered from the environment, if specified, or the registry. N)rrr2)r/r0r0r1rVsrcCst|dr|}|S)z/Returns an internal sequence dictionary update.items)hasattrr3)dr0r0r1dict_to_sequencebs r6c Cs4d}d}t|drt|}nbt|dr.|j}nPt|dr~y |}Wntjk rZYn$Xt|j}d|jkr~t dt t|dry | }Wn$t tfk r|dk r|}Yn^Xt|dr|dkry&|dd | }||pdWnt tfk rd}YnX|dkr&d}td||S) Nr__len__lenfilenoba%Requests has determined the content-length for this request using the binary size of the file: however, the file has been opened in text mode (i.e. without the 'b' flag in the mode). This may lead to an incorrect content-length. In Requests 3.0, support will be removed for files in text mode.tellseek)r4r8r9ioUnsupportedOperationosfstatst_sizemodewarningswarnrr;r)IOErrorr<max)oZ total_lengthZcurrent_positionr9r0r0r1 super_lenks@             rIFc Csyddlm}m}d}xJtD]B}ytjd|}Wntk rJdSXtj|r|}PqW|dkrndSt |}d}t |t r| d}|j |d} y6||| } | r| drdnd} | | | dfSWn|tfk r|rYnXWnttfk rYnXdS) z;Returns the Requests tuple auth for a given url from netrc.r)netrcNetrcParseErrorNz~/{}:asciirr=)rJrK NETRC_FILESr@path expanduserformatKeyErrorexistsr isinstancer decodenetlocr*ZauthenticatorsrFr%AttributeError) urlZ raise_errorsrJrKZ netrc_pathfZlocZriZsplitstrr/rZlogin_ir0r0r1get_netrc_auths8     rZcCsBt|dd}|r>t|tr>|ddkr>|ddkr>tj|SdS)z0Tries to guess the filename of the given object.nameNr<>)getattrrTrr@rObasename)objr[r0r0r1guess_filenames  rbcCstj|r|Stj|\}}x2|rRtj|sRtj|\}}d||g}q"Wt|sb|St|}||kr||St }tjj|f|d}tj|s|j ||d}|S)zReplace nonexistent paths that look like they refer to a member of a zip archive with the location of an extracted copy of the target, or else just return the provided path unchanged. /)rO) r@rOrSr*joinzipfileZ is_zipfileZZipFileZnamelisttempfileZ gettempdirextract)rOarchivememberprefixZzip_fileZtmpZextracted_pathr0r0r1extract_zipped_pathss      rkcCs.|dkr dSt|ttttfr&tdt|S)aTake an object and test to see if it can be represented as a dictionary. Unless it can not be represented as such, return an OrderedDict, e.g., :: >>> from_key_val_list([('key', 'val')]) OrderedDict([('key', 'val')]) >>> from_key_val_list('string') ValueError: cannot encode objects that are not 2-tuples >>> from_key_val_list({'key': 'val'}) OrderedDict([('key', 'val')]) :rtype: OrderedDict Nz+cannot encode objects that are not 2-tuples)rTr r boolr( ValueErrorr )valuer0r0r1from_key_val_lists rocCs@|dkr dSt|ttttfr&tdt|tr8|}t|S)aTake an object and test to see if it can be represented as a dictionary. If it can be, return a list of tuples, e.g., :: >>> to_key_val_list([('key', 'val')]) [('key', 'val')] >>> to_key_val_list({'key': 'val'}) [('key', 'val')] >>> to_key_val_list('string') ValueError: cannot encode objects that are not 2-tuples. :rtype: list Nz+cannot encode objects that are not 2-tuples) rTr r rlr(rmrr3list)rnr0r0r1to_key_val_lists rqcCs\g}xRt|D]F}|dd|ddkr6dkrJnnt|dd}||qW|S)aParse lists as described by RFC 2068 Section 2. In particular, parse comma-separated lists where the elements of the list may include quoted-strings. A quoted-string could contain a comma. A non-quoted string could have quotes in the middle. Quotes are removed automatically after parsing. It basically works like :func:`parse_set_header` just that items may appear multiple times and case sensitivity is preserved. The return value is a standard :class:`list`: >>> parse_list_header('token, "quoted value"') ['token', 'quoted value'] To create a header from the :class:`list` again, use the :func:`dump_header` function. :param value: a string with a list header. :return: :class:`list` :rtype: list Nrr]")_parse_list_headerunquote_header_valueappend)rnresultitemr0r0r1parse_list_header8s (rxcCs|i}xrt|D]f}d|kr$d||<q|dd\}}|dd|ddkrXdkrlnnt|dd}|||<qW|S)a^Parse lists of key, value pairs as described by RFC 2068 Section 2 and convert them into a python dict: >>> d = parse_dict_header('foo="is a fish", bar="as well"') >>> type(d) is dict True >>> sorted(d.items()) [('bar', 'as well'), ('foo', 'is a fish')] If there is no value for a key it will be `None`: >>> parse_dict_header('key_without_value') {'key_without_value': None} To create a header from the :class:`dict` again, use the :func:`dump_header` function. :param value: a string with a dict header. :return: :class:`dict` :rtype: dict =Nrr]rr)rsr*rt)rnrvrwr[r0r0r1parse_dict_headerXs( rzcCs\|rX|d|dkr dkrXnn4|dd}|rD|dddkrX|ddd dS|S) zUnquotes a header value. (Reversal of :func:`quote_header_value`). This does not use the real unquoting but what browsers are actually using for quoting. :param value: the header value to unquote. :rtype: str rr]rrrNr=z\\\z\")r+)rnZ is_filenamer0r0r1rt{s $ rtcCs"i}x|D]}|j||j<q W|S)zReturns a key/value dictionary from a CookieJar. :param cj: CookieJar object to extract cookies from. :rtype: dict )rnr[)cj cookie_dictZcookier0r0r1dict_from_cookiejars r~cCs t||S)zReturns a CookieJar from a key/value dictionary. :param cj: CookieJar to insert cookies into. :param cookie_dict: Dict of key/values to insert into CookieJar. :rtype: CookieJar )r)r|r}r0r0r1add_dict_to_cookiejarsrcCsTtdttjdtjd}tjdtjd}td}||||||S)zlReturns encodings from given content string. :param content: bytestring to extract encodings from. zIn requests 3.0, get_encodings_from_content will be removed. For more information, please see the discussion on issue #2266. (This warning should only appear once.)z!])flagsz+]z$^<\?xml.*?encoding=["\']*(.+?)["\'>])rDrEDeprecationWarningr,compiler.findall)contentZ charset_reZ pragma_reZxml_rer0r0r1get_encodings_from_contents rc Cs|d}|d|dd}}i}d}xh|D]`}|}|r2|d}}|d} | dkr|d| |}|| dd|}|||<q2W||fS) zReturns content type and parameters from given header :param header: string :return: tuple containing content type and dictionary of parameters rrrNz"' Tryr])r*stripfindlower) headertokens content_typeparamsZ params_dictZitems_to_stripparamkeyrnZindex_of_equalsr0r0r1_parse_content_type_headers    rcCsD|d}|sdSt|\}}d|kr4|ddSd|kr@dSdS)z}Returns encodings from given HTTP Header Dict. :param headers: dictionary to extract encoding from. :rtype: str z content-typeNcharsetz'"textz ISO-8859-1)getrr)headersrrr0r0r1get_encoding_from_headerss  rccsr|jdkr"x|D] }|VqWdSt|jdd}x |D]}||}|r:|Vq:W|jddd}|rn|VdS)zStream decodes a iterator.Nr+)errorsT)final)encodingcodecsgetincrementaldecoderrU)iteratorrrwdecoderchunkrvr0r0r1stream_decode_response_unicodes      rccsLd}|dks|dkrt|}x*|t|krF||||V||7}qWdS)z Iterate over slices of a string.rN)r8)stringZ slice_lengthposr0r0r1 iter_slicess rcCsvtdtg}t|j}|rJy t|j|Stk rH||YnXyt|j|ddSt k rp|jSXdS)zReturns the requested content back in unicode. :param r: Response object to get unicode content from. Tried: 1. charset from content-type 2. fall back and replace all unicode characters :rtype: str zIn requests 3.0, get_unicode_from_response will be removed. For more information, please see the discussion on issue #2266. (This warning should only appear once.)r+)rN) rDrErrrr r UnicodeErrorru TypeError)rZtried_encodingsrr0r0r1get_unicode_from_response s   rzBABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~c Cs|d}xtdt|D]}||dd}t|dkr|rytt|d}Wn tk rttd|YnX|tkr|||dd||<qd||||<qd||||<qWd |S) zUn-escape any percent-escape sequences in a URI that are unreserved characters. This leaves all reserved, illegal and non-ASCII bytes encoded. :rtype: str %rrr=z%Invalid percent-escape sequence: '%s'N) r*ranger8isalnumchrr(rmrUNRESERVED_SETrd)uripartsihcr0r0r1unquote_unreserved5s rcCs:d}d}ytt||dStk r4t||dSXdS)zRe-quote the given URI. This function passes the given URI through an unquote/quote cycle to ensure that it is fully and consistently quoted. :rtype: str z!#$%&'()*+,/:;=?@[]~z!#$&'()*+,/:;=?@[]~)ZsafeN)rrr)rZsafe_with_percentZsafe_without_percentr0r0r1 requote_uriMs rcCsltdt|d}|d\}}tdttt|d}tdt|d|@}||@||@kS)zThis function allows you to check if an IP belongs to a network subnet Example: returns True if ip = 192.168.1.1 and net = 192.168.1.0/24 returns False if ip = 192.168.1.1 and net = 192.168.100.0/24 :rtype: bool z=Lrrc)structZunpacksocket inet_atonr*dotted_netmaskr()ZipZnetZipaddrZnetaddrbitsZnetmaskZnetworkr0r0r1address_in_networkcs rcCs&ddd|>dA}ttd|S)zConverts mask from /xx format to xxx.xxx.xxx.xxx Example: if mask is 24 function returns 255.255.255.0 :rtype: str lr z>I)rZ inet_ntoarZpack)maskrr0r0r1rrsrcCs*yt|Wntjk r$dSXdS)z :rtype: bool FT)rrerror)Z string_ipr0r0r1is_ipv4_address}s rcCs|ddkryt|dd}Wntk r8dSX|dksJ|dkrNdSyt|ddWqtjk r|dSXndSdS)zV Very simple check of the cidr format in no_proxy variable. :rtype: bool rcrFrrT)countr(r*rmrrr)Zstring_networkrr0r0r1 is_valid_cidrsrc csT|dk }|r"tj|}|tj|<z dVWd|rN|dkrDtj|=n |tj|<XdS)zSet the environment variable 'env_name' to 'value' Save previous value, yield, and then restore the previous value stored in the environment variable 'env_name'. If 'value' is None, do nothingN)r@environr)Zenv_namernZ value_changed old_valuer0r0r1 set_environs    rc Cs,dd}|}|dkr|d}t|}|jdkr2dS|rdd|dd d D}t|jrxz|D],}t|rt|j|rdSqb|j|krbdSqbWnD|j}|jr|d |j7}x&|D]}|j |s| |rdSqWt d|6yt |j}Wn t t jfk rd }YnXWdQRX|r(dSd S) zL Returns whether we should bypass proxies or not. :rtype: bool cSstj|ptj|S)N)r@rrupper)kr0r0r1rz'should_bypass_proxies..Nno_proxyTcss|]}|r|VqdS)Nr0).0r/r0r0r1 sz(should_bypass_proxies.. r,z:{}F)rhostnamer+r*rrrZportrQendswithrrrrZgaierror) rXrZ get_proxyZ no_proxy_argparsedZproxy_ipZhost_with_portr/Zbypassr0r0r1should_bypass_proxiess<        rcCst||driStSdS)zA Return a dict of environment proxies. :rtype: dict )rN)rr )rXrr0r0r1get_environ_proxiess rcCsv|pi}t|}|jdkr.||j|dS|jd|j|jd|jdg}d}x|D]}||krX||}PqXW|S)zSelect a proxy for the url, if applicable. :param url: The url being for the request :param proxies: A dictionary of schemes or schemes and hosts to proxy URLs Nallz://zall://)rrrscheme)rXZproxiesZurlpartsZ proxy_keysproxyZ proxy_keyr0r0r1 select_proxys  rpython-requestscCs d|tfS)zO Return a string representing the default user agent. :rtype: str z%s/%s)r)r[r0r0r1default_user_agentsrcCsttdddddS)z9 :rtype: requests.structures.CaseInsensitiveDict z, )ZgzipZdeflatez*/*z keep-alive)z User-AgentzAccept-EncodingZAcceptZ Connection)rrrdr0r0r0r1default_headers"s rc Csg}d}||}|s|Sxtd|D]}y|dd\}}Wntk r^|d}}YnXd|di}xP|dD]B}y|d\}}Wntk rPYnX|||||<qzW||q(W|S) zReturn a list of parsed link headers proxies. i.e. Link: ; rel=front; type="image/jpeg",; rel=back;type="image/jpeg" :rtype: list z '"z, * '"ry)rr,r*rmru) rnZlinksZ replace_charsvalrXrlinkrrr0r0r1parse_header_links.s& rrMr=cCs|dd}|tjtjfkr dS|ddtjkr6dS|ddtjtjfkrRdS|t}|dkrhd S|dkr|dddtkrd S|d ddtkrd S|dkr|ddt krd S|d dt krdSdS)z :rtype: str Nzutf-32rz utf-8-sigr=zutf-16rzutf-8z utf-16-berz utf-16-lez utf-32-bez utf-32-le) r BOM_UTF32_LE BOM_UTF32_BEBOM_UTF8 BOM_UTF16_LE BOM_UTF16_BEr_null_null2_null3)dataZsampleZ nullcountr0r0r1guess_json_utfYs*  rcCs8t||\}}}}}}|s$||}}t||||||fS)zGiven a URL that may or may not have a scheme, prepend the given scheme. Does not replace a present scheme with the one provided as an argument. :rtype: str )rr)rXZ new_schemerrVrOrqueryfragmentr0r0r1prepend_scheme_if_neededys rc CsBt|}yt|jt|jf}Wnttfk r<d}YnX|S)z{Given a url with authentication components, extract them into a tuple of username,password. :rtype: (str,str) )rr)rr ZusernameZpasswordrWr)rXrZauthr0r0r1get_auth_from_urls  rs^\S[^\r\n]*$|^$z^\S[^\r\n]*$|^$c Csf|\}}t|trt}nt}y||s4td|Wn*tk r`td||t|fYnXdS)zVerifies that header value is a string which doesn't contain leading whitespace or return characters. This prevents unintended header injection. :param header: tuple, in the format (name, value). z7Invalid return character or leading space in header: %sz>Value for header {%s: %s} must be of type str or bytes, not %sN)rTr _CLEAN_HEADER_REGEX_BYTE_CLEAN_HEADER_REGEX_STRr-rrtype)rr[rnZpatr0r0r1check_header_validitys  rcCsFt|\}}}}}}|s"||}}|ddd}t|||||dfS)zW Given a url remove the fragment and the authentication part. :rtype: str @rr]r)rrsplitr)rXrrVrOrrrr0r0r1 urldefragauths  rc Cs`t|jdd}|dk rTt|jtrTy||jWq\ttfk rPtdYq\XntddS)zfMove file pointer back to its recorded starting position so it can be read again on redirect. r<Nz;An error occurred when rewinding request body for redirect.z+Unable to rewind request body for redirect.)r_ZbodyrTZ_body_positionrrFr)r)Zprepared_requestZ body_seekr0r0r1 rewind_bodysr)F)F)N)r)a__doc__r contextlibr>r@r,rrsysrfrDrerrrZ_internal_utilsrcompatrrsrrr r r r r rrrrrrrrZcookiesrZ structuresr exceptionsrrrrrNwhereZDEFAULT_CA_BUNDLE_PATHZ DEFAULT_PORTSplatformr2r6rIrZrbrkrorqrxrzrtr~rrrrrrr frozensetrrrrrrrcontextmanagerrrrrrrrencoderrrrrrrrrrrrr0r0r0r1 s    D    '  = 3  #   %  =   &