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werkzeug.http
~~~~~~~~~~~~~
Werkzeug comes with a bunch of utilities that help Werkzeug to deal with
HTTP data. Most of the classes and functions provided by this module are
used by the wrappers, but they are useful on their own, too, especially if
the response and request objects are not used.
This covers some of the more HTTP centric features of WSGI, some other
utilities such as cookie handling are documented in the `werkzeug.utils`
module.
:copyright: 2007 Pallets
:license: BSD-3-Clause
i����N( t datetime( t timedelta( t md5( t gmtime( t timei ( t
integer_types( t iteritems( t PY2( t string_types( t text_type( t to_bytes( t
to_unicode( t try_coerce_native( t _cookie_parse_impl( t
_cookie_quote( t _make_cookie_domain( t parsedate_tz( t parse_http_list( t unquote_to_bytes( t unquotet latin1s utf-8s�
( # media-range capturing-parenthesis
[^\s;,]+ # type/subtype
(?:[ \t]*;[ \t]* # ";"
(?: # parameter non-capturing-parenthesis
[^\s;,q][^\s;,]* # token that doesn't start with "q"
| # or
q[^\s;,=][^\s;,]* # token that is more than just "q"
)
)* # zero or more parameters
) # end of media-range
(?:[ \t]*;[ \t]*q= # weight is a "q" parameter
(\d*(?:\.\d+)?) # qvalue capturing-parentheses
[^,]* # "extension" accept params: who cares?
)? # accept params are optional
sM !#$%&'*+-.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ^_`abcdefghijklmnopqrstuvwxyz|~s& ([Ww]/)?(?:"(.*?)"|(.*?))(?:\s*,\s*|$)s ()<>@,;:"/[]?={} s�
;\s*,?\s* # newlines were replaced with commas
(?P<key>
"[^"\\]*(?:\\.[^"\\]*)*" # quoted string
|
[^\s;,=*]+ # token
)
(?:\*(?P<count>\d+))? # *1, optional continuation index
\s*
(?: # optionally followed by =value
(?: # equals sign, possibly with encoding
\*\s*=\s* # * indicates extended notation
(?: # optional encoding
(?P<encoding>[^\s]+?)
'(?P<language>[^\s]*?)'
)?
|
=\s* # basic notation
)
(?P<value>
"[^"\\]*(?:\\.[^"\\]*)*" # quoted string
|
[^;,]+ # token
)?
)?
\s*
t flagss ,\s*([^;,\s]+)([;,]\s*.+)?t allows content-encodings content-languages content-lengths content-locations content-md5s
content-ranges content-typet expiress
last-modifiedt
connections
keep-alives proxy-authenticates proxy-authorizationt tet trailers transfer-encodingt upgradet Continueid s Switching Protocolsie t
Processingif s Early Hintsig t OKi� t Createdi� t Acceptedi� s Non Authoritative Informationi� s
No Contenti� s
Reset Contenti� s Partial Contenti� s Multi Statusi� s Already Reportedi� s IM Usedi� s Multiple Choicesi, s Moved Permanentlyi- t Foundi. s See Otheri/ s Not Modifiedi0 s Use Proxyi1 s Switch Proxyi2 s Temporary Redirecti3 s Permanent Redirecti4 s Bad Requesti� t Unauthorizedi� s Payment Requiredi� t Forbiddeni� s Not Foundi� s Method Not Allowedi� s Not Acceptablei� s Proxy Authentication Requiredi� s Request Timeouti� t Conflicti� t Gonei� s Length Requiredi� s Precondition Failedi� s Request Entity Too Largei� s Request URI Too Longi� s Unsupported Media Typei� s Requested Range Not Satisfiablei� s Expectation Failedi� s I'm a teapoti� s Misdirected Requesti� s Unprocessable Entityi� t Lockedi� s Failed Dependencyi� s Too Earlyi� s Upgrade Requiredi� s Precondition Requiredi� s Too Many Requestsi� s Request Header Fields Too Largei� s
Retry Withi� s Unavailable For Legal Reasonsi� s Internal Server Errori� s Not Implementedi� s Bad Gatewayi� s Service Unavailablei� s Gateway Timeouti� s HTTP Version Not Supportedi� s Variant Also Negotiatesi� s Insufficient Storagei� s
Loop Detectedi� s Not Extendedi� s Network Authentication Failedi� c C s t | t � r | S| j d � S( s2 coerce wsgi unicode represented bytes to real onesR ( t
isinstancet bytest encode( t data( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt
wsgi_to_bytes� s c C s? t | t � s t d � � t | t � r. | S| j d � Sd S( Ns data must be bytesR ( R' R( t AssertionErrort strt decode( R* ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt
bytes_to_wsgi� s t c C s| t | t � r t | � } n t | � } | r\ t t | � B} t | � j | � r\ | Sn d | j d d � j d d � S( s Quote a header value if necessary.
.. versionadded:: 0.5
:param value: the value to quote.
:param extra_chars: a list of extra characters to skip quoting.
:param allow_token: if this is enabled token values are returned
unchanged.
s "%s"s \s \\t "s \"( R' R( R/ R- t _token_charst sett issubsett replace( t valuet extra_charst allow_tokent token_chars( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt quote_header_value� s
c C sq | rm | d | d k o% d k n rm | d d !} | sN | d d k rm | j d d � j d d � Sn | S( s� Unquotes a header value. (Reversal of :func:`quote_header_value`).
This does not use the real unquoting but what browsers are actually
using for quoting.
.. versionadded:: 0.5
:param value: the header value to unquote.
i i����R1 i i s \\s \s \"( R5 ( R6 t is_filename( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt unquote_header_value� s
*
c C s� g } | d k r" | j | � n xS t | � D]E \ } } | d k rW | j | � q/ | j d | t | � f � q/ Wd j | � S( s� The reverse function to :func:`parse_options_header`.
:param header: the header to dump
:param options: a dict of options to append.
s %s=%ss ; N( t Nonet appendR R: t join( t headert optionst segmentst keyR6 ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt dump_options_header s !c C s� t | t � rt g } x� t | � D]K \ } } | d k rJ | j | � q" | j d | t | d | �f � q" Wn% g | D] } t | d | �^ q{ } d j | � S( sJ Dump an HTTP header again. This is the reversal of
:func:`parse_list_header`, :func:`parse_set_header` and
:func:`parse_dict_header`. This also quotes strings that include an
equals sign unless you pass it as dict of key, value pairs.
>>> dump_header({'foo': 'bar baz'})
'foo="bar baz"'
>>> dump_header(('foo', 'bar baz'))
'foo, "bar baz"'
:param iterable: the iterable or dict of values to quote.
:param allow_token: if set to `False` tokens as values are disallowed.
See :func:`quote_header_value` for more details.
s %s=%sR8 s , N( R' t dictR R= R> R: R? ( t iterableR8 t itemsRC R6 t x( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt dump_header s $%c C s d j d � t | � D� � S( s� Dump a Content Security Policy header.
These are structured into policies such as "default-src 'self';
script-src 'self'".
.. versionadded:: 1.0.0
Support for Content Security Policy headers was added.
s ; c s s% | ] \ } } d | | f Vq d S( s %s %sN( ( t .0RC R6 ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pys <genexpr>D s ( R? R ( R@ ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt dump_csp_header: s
c C sh g } x[ t | � D]M } | d | d k o8 d k n rS t | d d !� } n | j | � q W| S( s� Parse 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`
i i����R1 ( t _parse_list_headerR< R> ( R6 t resultt item( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_list_headerG s $c C s� | � } t | t � s' t | � } n x� t | � D]~ } d | k rV d | | <q4 n | j d d � \ } } | d | d k o� d k n r� t | d d !� } n | | | <q4 W| S( sK Parse lists of key, value pairs as described by RFC 2068 Section 2 and
convert them into a python dict (or any other mapping object created from
the type with a dict like interface provided by the `cls` argument):
>>> 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.
.. versionchanged:: 0.9
Added support for `cls` argument.
:param value: a string with a dict header.
:param cls: callable to use for storage of parsed results.
:return: an instance of `cls`
t =i i����R1 N( R' R R/ RL R= t splitR< ( R6 t clsRM RN t name( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_dict_headere s
$c
C s� | s d i f Sg } d | j d d � } xs| r�t j | � } | sN Pn | j | j d � � i } | j d � } d } x� | rtt j | � } | s� Pn | j � \ } } }
} } | s� d } n |
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| | | <| | j � } q� W| j | � | t
k r�t | � S| } q/ W| r�t | � Sd i f S( s� Parse a ``Content-Type`` like header into a tuple with the content
type and the options:
>>> parse_options_header('text/html; charset=utf8')
('text/html', {'charset': 'utf8'})
This should not be used to parse ``Cache-Control`` like headers that use
a slightly different format. For these headers use the
:func:`parse_dict_header` function.
.. versionchanged:: 0.15
:rfc:`2231` parameter continuations are handled.
.. versionadded:: 0.5
:param value: the header to parse.
:param multiple: Whether try to parse and return multiple MIME types
:return: (mimetype, options) or (mimetype, options, mimetype, options, …)
if multiple=True
R0 t ,s
i i t filenameN( R5 t _option_header_start_mime_typet matchR> t groupR= t _option_header_piece_ret groupsR< t _unquoteR. t gett endt Falset tuple(
R6 t multipleRM RX RA t restt continued_encodingt optmatcht optiont countt encodingt languaget option_value( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_options_header� sH
c C s� | d k r t } n | s% | d � Sg } xo t j | � D]^ } | j d � } | s_ d } n t t t | � d � d � } | j | j d � | f � q; W| | � S( s� Parses an HTTP Accept-* header. This does not implement a complete
valid algorithm but one that supports at least value and quality
extraction.
Returns a new :class:`Accept` object (basically a list of ``(value, quality)``
tuples sorted by the quality with some additional accessor methods).
The second parameter can be a subclass of :class:`Accept` that is created
with the parsed values and returned.
:param value: the accept header string to be parsed.
:param cls: the wrapper class for the return value (can be
:class:`Accept` or a subclass thereof)
:return: an instance of `cls`.
i i i N( R= t Acceptt
_accept_ret finditerRY t maxt mint floatR> ( R6 RR RM RX t quality( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_accept_header� s
c C s; | d k r t } n | s( | d | � S| t | � | � S( s Parse a cache control header. The RFC differs between response and
request cache control, this method does not. It's your responsibility
to not use the wrong control statements.
.. versionadded:: 0.5
The `cls` was added. If not specified an immutable
:class:`~werkzeug.datastructures.RequestCacheControl` is returned.
:param value: a cache control header to be parsed.
:param on_update: an optional callable that is called every time a value
on the :class:`~werkzeug.datastructures.CacheControl`
object is changed.
:param cls: the class for the returned object. By default
:class:`~werkzeug.datastructures.RequestCacheControl` is used.
:return: a `cls` object.
N( R= t RequestCacheControlRT ( R6 t on_updateRR ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_cache_control_header� s
c C s� | d k r t } n | d k r. | d | � Sg } xo | j d � D]^ } | j � } d | k rD | j � j d d � \ } } | j | j � | j � f � qD qD W| | | � S( s� Parse a Content Security Policy header.
.. versionadded:: 1.0.0
Support for Content Security Policy headers was added.
:param value: a csp header to be parsed.
:param on_update: an optional callable that is called every time a value
on the object is changed.
:param cls: the class for the returned object. By default
:class:`~werkzeug.datastructures.ContentSecurityPolicy` is used.
:return: a `cls` object.
t ;t i N( R= t ContentSecurityPolicyRQ t stripR> ( R6 Rt RR RG t policyt directive( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_csp_header s
&c C s& | s t d | � St t | � | � S( s Parse a set-like header and return a
:class:`~werkzeug.datastructures.HeaderSet` object:
>>> hs = parse_set_header('token, "quoted value"')
The return value is an object that treats the items case-insensitively
and keeps the order of the items:
>>> 'TOKEN' in hs
True
>>> hs.index('quoted value')
1
>>> hs
HeaderSet(['token', 'quoted value'])
To create a header from the :class:`HeaderSet` again, use the
:func:`dump_header` function.
:param value: a set header to be parsed.
:param on_update: an optional callable that is called every time a
value on the :class:`~werkzeug.datastructures.HeaderSet`
object is changed.
:return: a :class:`~werkzeug.datastructures.HeaderSet`
N( t HeaderSetR= RO ( R6 Rt ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_set_header+ s
c C sC | s
d St | � } y( | j d d � \ } } | j � } Wn t k
rR d SX| d k r� y% t j | � j d d � \ } } Wn t k
r� d SXt d i t | t
� d 6t | t
� d 6� S| d k r?t | � } x d D] } | | k r� d Sq� Wd | k r2| j d
� s+| j d � r2d Sn t d | � Sd S( sw Parse an HTTP basic/digest authorization header transmitted by the web
browser. The return value is either `None` if the header was invalid or
not given, otherwise an :class:`~werkzeug.datastructures.Authorization`
object.
:param value: the authorization header to parse.
:return: a :class:`~werkzeug.datastructures.Authorization` object or `None`.
Ni t basict :t usernamet passwordt digestt realmt noncet urit responset qopt nct cnonce( s usernames realms nonces uris response(
R+ RQ R= t lowert
ValueErrort base64t b64decodet Exceptiont
AuthorizationR t _basic_auth_charsetRT R] ( R6 t auth_typet auth_infoR� R� t auth_mapRC ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_authorization_headerI s6
%
c C s� | s t d | � Sy( | j d d � \ } } | j � } Wn0 t t f k
rm t | j � j � d | �SXt | t | � | � S( s� Parse an HTTP WWW-Authenticate header into a
:class:`~werkzeug.datastructures.WWWAuthenticate` object.
:param value: a WWW-Authenticate header to parse.
:param on_update: an optional callable that is called every time a value
on the :class:`~werkzeug.datastructures.WWWAuthenticate`
object is changed.
:return: a :class:`~werkzeug.datastructures.WWWAuthenticate` object.
Rt i N( t WWWAuthenticateRQ R= R� R� t AttributeErrorRy RT ( R6 Rt R� R� ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_www_authenticate_headerq s
c C sF | s
t � St | � } | d k r2 t d | � St t | � d � S( s� Parses an if-range header which can be an etag or a date. Returns
a :class:`~werkzeug.datastructures.IfRange` object.
.. versionadded:: 0.7
t datei N( t IfRanget
parse_dateR= t unquote_etag( R6 R� ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_if_range_header� s
c C s� | s d | k r d Sg } d } | j d d � \ } } | j � j � } xU| j d � D]D} | j � } d | k r d S| j d � r� | d k r� d Sy t | � } Wn t k
r� d SXd } d } n� d | k r�| j d d � \ } } | j � } | j � } | j � s d St | � } | | k sB| d k rFd S| r| j � s\d St | � d } | | k r�d Sn d } | } n | j | | f � q] Wt | | � S( s Parses a range header into a :class:`~werkzeug.datastructures.Range`
object. If the header is missing or malformed `None` is returned.
`ranges` is a list of ``(start, stop)`` tuples where the ranges are
non-inclusive.
.. versionadded:: 0.7
RP i i RU t -i����N(
R= RQ Ry R� t
startswitht intR� t isdigitR> t Range( R6 t make_inclusivet rangest last_endt unitst rngRN t beginR^ ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_range_header� sL
c C sZ | d k r d Sy( | p d j � j d d � \ } } Wn t k
rL d SXd | k r] d S| j d d � \ } } | d k r� d } n | j � r� t | � } n d S| d k r� t | d d | d | �Sd | k r� d S| j d d � \ } } y t | � } t | � d } Wn t k
r*d SXt | | | � rVt | | | | d | �Sd S( s� Parses a range header into a
:class:`~werkzeug.datastructures.ContentRange` object or `None` if
parsing is not possible.
.. versionadded:: 0.7
:param value: a content range header to be parsed.
:param on_update: an optional callable that is called every time a value
on the :class:`~werkzeug.datastructures.ContentRange`
object is changed.
R0 i t /t *Rt R� N( R= Ry RQ R� R� R� t ContentRanget is_byte_range_valid( R6 Rt R� t rangedefR� t lengtht startt stop( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_content_range_header� s4 (
c C s< d | k r t d � � n d | } | r8 d | } n | S( si Quote an etag.
:param etag: the etag to quote.
:param weak: set to `True` to tag it "weak".
R1 s invalid etags "%s"s W/( R� ( t etagt weak( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt
quote_etag� s
c C s| | s
d S| j � } t } | j d � r> t } | d } n | d | d k o] d k n rr | d d !} n | | f S(
s� Unquote a single etag:
>>> unquote_etag('W/"bar"')
('bar', True)
>>> unquote_etag('"bar"')
('bar', False)
:param etag: the etag identifier to unquote.
:return: a ``(etag, weak)`` tuple.
s W/s w/i i i����R1 N( NN( s W/s w/( R= Ry R_ R� t True( R� R� ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyR� s
$c C s� | s
t � Sg } g } t | � } d } x� | | k r� t j | | � } | d k r\ Pn | j � \ } } } | d k r� t d t � S| r� | } n | r� | j | � n
| j | � | j � } q. Wt | | � S( s� Parse an etag header.
:param value: the tag header to parse
:return: an :class:`~werkzeug.datastructures.ETags` object.
i R� t star_tagN( t ETagst lent _etag_reRX R= R[ R� R> R^ ( R6 t strongR� R^ t posRX t is_weakt quotedt raw( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_etags s(
c C s t | � j � S( s Generate an etag for some data.( R t hexdigest( R* ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt
generate_etag7 s c C s� | r� t | j � � } | d k r� y� | d } | d k rV | d k rV | d 7} n% | d k r{ | d k r{ | d 7} n t | f | d d !� t d | d
p� d � SWq� t t f k
r� d SXq� n d S( s� Parse one of the following date formats into a datetime object:
.. sourcecode:: text
Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 1123
Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036
Sun Nov 6 08:49:37 1994 ; ANSI C's asctime() format
If parsing fails the return value is `None`.
:param value: a string with a supported date format.
:return: a :class:`datetime.datetime` object.
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f S( s' Used for `http_date` and `cookie_date`.s% %s, %02d%s%s%s%04d %02d:%02d:%02d GMTt Mont Tuet Wedt Thut Frit Satt Sunt Jant Febt Mart Aprt Mayt Junt Jult Augt Sept Octt Novt Deci N( s Mons Tues Weds Thus Fris Sats Sun( s Jans Febs Mars Aprs Mays Juns Juls Augs Seps Octs Novs Dec( R= R R' R t utctimetupleR Rp t tm_wdayt tm_mdayt tm_mont tm_yeart tm_hourt tm_mint tm_sec( t dt delim( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt
_dump_date\ s8
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t | d � S( s� Formats the time to ensure compatibility with Netscape's cookie
standard.
Accepts a floating point number expressed in seconds since the epoch in, a
datetime object or a timetuple. All times in UTC. The :func:`parse_date`
function can be used to parse such a date.
Outputs a string in the format ``Wdy, DD-Mon-YYYY HH:MM:SS GMT``.
:param expires: If provided that date is used, otherwise the current.
R� ( R� ( R ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt cookie_date~ s c C s
t | d � S( s� Formats the time to match the RFC1123 date format.
Accepts a floating point number expressed in seconds since the epoch in, a
datetime object or a timetuple. All times in UTC. The :func:`parse_date`
function can be used to parse such a date.
Outputs a string in the format ``Wdy, DD Mon YYYY HH:MM:SS GMT``.
:param timestamp: If provided that date is used, otherwise the current.
Rw ( R� ( t timestamp( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt http_date� s c C si | s
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rd d SXd S( s� Parses a base-10 integer count of seconds into a timedelta.
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:param value: a string consisting of an integer represented in base-10
:return: a :class:`datetime.timedelta` object or `None`.
i R� N( R= R� R� R R� ( R6 R� ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_age� s
c C sk | d k r d St | t � r: | j | j d d } n t | � } | d k ra t d � � n t | � S( s� Formats the duration as a base-10 integer.
:param age: should be an integer number of seconds,
a :class:`datetime.timedelta` object, or,
if the age is unknown, `None` (default).
Ni i i s age cannot be negative( R= R' R R� t daysR� R� R- ( t age( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt dump_age� s c C s� | d k r' | d k r' t | � } n | d k rB t d � � n t } t | t � rf t | � } n | d k r� | j d d � } n d } | r� d | k r� t | j d � � } n | d k r� | j
d k r� | j
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s� Convenience method for conditional requests.
:param environ: the WSGI environment of the request to be checked.
:param etag: the etag for the response for comparison.
:param data: or alternatively the data of the response to automatically
generate an etag using :func:`generate_etag`.
:param last_modified: an optional date of the last modification.
:param ignore_if_range: If `False`, `If-Range` header will be taken into
account.
:return: `True` if the resource was modified, otherwise `False`.
.. versionchanged:: 1.0.0
The check is run for methods other than ``GET`` and ``HEAD``.
s both data and etag givent microsecondi t
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HTTP_IF_MATCHN( R= R� t TypeErrorR_ R' R R� R5 R� R] R� R� R� R� R� t containst
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if_none_matcht if_match( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt is_resource_modified� s8 c C s_ t d � | D� � } g | D]7 \ } } t | � sH | j � | k r | | f ^ q | (d S( s Remove all entity headers from a list or :class:`Headers` object. This
operation works in-place. `Expires` and `Content-Location` headers are
by default not removed. The reason for this is :rfc:`2616` section
10.3.5 which specifies some entity headers that should be sent.
.. versionchanged:: 0.5
added `allowed` parameter.
:param headers: a list or :class:`Headers` object.
:param allowed: a list of headers that should still be allowed even though
they are entity headers.
c s s | ] } | j � Vq d S( N( R� ( RJ RH ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pys <genexpr> s N( R3 t is_entity_headerR� ( t headerst allowedRC R6 ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt remove_entity_headers
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c C s6 g | D]$ \ } } t | � s | | f ^ q | (d S( s� Remove all HTTP/1.1 "Hop-by-Hop" headers from a list or
:class:`Headers` object. This operation works in-place.
.. versionadded:: 0.5
:param headers: a list or :class:`Headers` object.
N( t is_hop_by_hop_header( R RC R6 ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt remove_hop_by_hop_headers s c C s | j � t k S( s� Check if a header is an entity header.
.. versionadded:: 0.5
:param header: the header to test.
:return: `True` if it's an entity header, `False` otherwise.
( R� t _entity_headers( R@ ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyR , s c C s | j � t k S( s� Check if a header is an HTTP/1.1 "Hop-by-Hop" header.
.. versionadded:: 0.5
:param header: the header to test.
:return: `True` if it's an HTTP/1.1 "Hop-by-Hop" header, `False` otherwise.
( R� t _hop_by_hop_headers( R@ ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyR 7 s R5 c s� t � t � r$ � j d d � � n � d k r9 d � n t � t � r] � j d d � � n | d k rr t } n � � � f d � } | | � � S( s] Parse a cookie from a string or WSGI environ.
The same key can be provided multiple times, the values are stored
in-order. The default :class:`MultiDict` will have the first value
first, and all values can be retrieved with
:meth:`MultiDict.getlist`.
:param header: The cookie header as a string, or a WSGI environ dict
with a ``HTTP_COOKIE`` key.
:param charset: The charset for the cookie values.
:param errors: The error behavior for the charset decoding.
:param cls: A dict-like class to store the parsed cookies in.
Defaults to :class:`MultiDict`.
.. versionchanged:: 1.0.0
Returns a :class:`MultiDict` instead of a
``TypeConversionDict``.
.. versionchanged:: 0.5
Returns a :class:`TypeConversionDict` instead of a regular dict.
The ``cls`` parameter was added.
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( ( R R R@ s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt parse_cookieB s R� i� c C s� t | | � } t | | � } | d k rL d d l m } | | | � } n t | � } t | t � r� | j d d d | j } n | d k r� t | t � s� t
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j | � q�q�n | d k r�q�n t | � } t | t t f � st t | � | � } n | r)t | � } n | d | 7} |
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� d d �n | S( s� Creates a new Set-Cookie header without the ``Set-Cookie`` prefix
The parameters are the same as in the cookie Morsel object in the
Python standard library but it accepts unicode data, too.
On Python 3 the return value of this function will be a unicode
string, on Python 2 it will be a native string. In both cases the
return value is usually restricted to ascii as the vast majority of
values are properly escaped, but that is no guarantee. If a unicode
string is returned it's tunneled through latin1 as required by
PEP 3333.
The return value is not ASCII safe if the key contains unicode
characters. This is technically against the specification but
happens in the wild. It's strongly recommended to not use
non-ASCII values for the keys.
:param max_age: should be a number of seconds, or `None` (default) if
the cookie should last only as long as the client's
browser session. Additionally `timedelta` objects
are accepted, too.
:param expires: should be a `datetime` object or unix timestamp.
:param path: limits the cookie to a given path, per default it will
span the whole domain.
:param domain: Use this if you want to set a cross-domain cookie. For
example, ``domain=".example.com"`` will set a cookie
that is readable by the domain ``www.example.com``,
``foo.example.com`` etc. Otherwise, a cookie will only
be readable by the domain that set it.
:param secure: The cookie will only be available via HTTPS
:param httponly: disallow JavaScript to access the cookie. This is an
extension to the cookie standard and probably not
supported by all browsers.
:param charset: the encoding for unicode values.
:param sync_expires: automatically set expires if max_age is defined
but expires not.
:param max_size: Warn if the final header value exceeds this size. The
default, 4093, should be safely `supported by most browsers
<cookie_>`_. Set to 0 to disable this check.
:param samesite: Limits the scope of the cookie such that it will
only be attached to requests if those requests are same-site.
.. _`cookie`: http://browsercookielimits.squawky.net/
.. versionchanged:: 1.0.0
The string ``'None'`` is accepted for ``samesite``.
i ( t
iri_to_urii< i t Strictt LaxR= s, SameSite must be 'Strict', 'Lax', or 'None'.RP t Domaint Expiress Max-Aget Securet HttpOnlyt Patht SameSites ; R s� The "{key}" cookie is too large: the value was {value_size} bytes but the header required {extra_size} extra bytes. The final size was {cookie_size} bytes but the limit is {max_size} bytes. Browsers may silently ignore cookies larger than this.RC t
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R= t urlsR R R' R R� R� R R� R t titleR� R R� R_ R> t bytearrayR( R R? R R. R� t warningst warnt format( RC R6 t max_ageR t patht domaint securet httponlyR t sync_expiresR t samesiteR t buft kt vt qt tmpt rvR R ( ( s1 /tmp/pip-install-sTXtzD/Werkzeug/werkzeug/http.pyt dump_cookieq sl <
c C s� | d k | d k k r t S| d k r> | d k p= | d k S| d k rb d | k o_ | k SS| | k rr t Sd | k o� | k SS( sc Checks if a given byte content range is valid for the given length.
.. versionadded:: 0.7
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