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S )wa� HTTP cookie handling for web clients.
This module has (now fairly distant) origins in Gisle Aas' Perl module
HTTP::Cookies, from the libwww-perl library.
Docstrings, comments and debug strings in this code refer to the
attributes of the HTTP cookie system as cookie-attributes, to distinguish
them clearly from Python attributes.
Class diagram (note that BSDDBCookieJar and the MSIE* classes are not
distributed with the Python standard library, but are available from
http://wwwsearch.sf.net/):
CookieJar____
/ \ \
FileCookieJar \ \
/ | \ \ \
MozillaCookieJar | LWPCookieJar \ \
| | \
| ---MSIEBase | \
| / | | \
| / MSIEDBCookieJar BSDDBCookieJar
|/
MSIECookieJar
�Cookie� CookieJar� CookiePolicy�DefaultCookiePolicy�
FileCookieJar� LWPCookieJar� LoadError�MozillaCookieJar� N)�timegmFc G s( t sd S ts dd l}|jd�atj | � S )Nr zhttp.cookiejar)�debug�logger�loggingZ getLogger)�argsr
� r �&/usr/lib64/python3.6/http/cookiejar.py�_debug. s
r zQa filename was not supplied (nor was the CookieJar instance initialised with one)c C sJ dd l } dd l}dd l}| j� }|jd |� |j� }|jd| dd� d S )Nr zhttp.cookiejar bug!
%s� )�
stacklevel)�io�warnings� traceback�StringIO� print_exc�getvalue�warn)r r r �f�msgr r r �_warn_unhandled_exception< s
r i� c C s� | d d� \}}}}}}|t kr�d| ko2dkn r�d| koJdkn r�d| kobdkn r�d| kozdkn r�d| ko�dkn r�t| �S d S d S ) N� � � � r � �; �= )�
EPOCH_YEARr
)�tt�year�monthZmday�hour�min�secr r r �_timegmK s
8Hr, ZMonZTueZWedZThuZFriZSatZSunZJanZFebZMarZAprZMayZJunZJulZAugZSepZOctZNovZDecc C s@ | dkrt j j� }n t j j| �}d|j|j|j|j|j|jf S )aH Return a string representing time in seconds since epoch, t.
If the function is called without an argument, it will use the current
time.
The format of the returned string is like "YYYY-MM-DD hh:mm:ssZ",
representing Universal Time (UTC, aka GMT). An example of this format is:
1994-11-24 08:49:37Z
Nz %04d-%02d-%02d %02d:%02d:%02dZ) �datetime�utcnow�utcfromtimestampr' r( �dayr) �minute�second)�t�dtr r r � time2isozY s
r5 c C sR | dkrt j j� }n t j j| �}dt|j� |jt|jd |j|j |j
|j f S )z�Return a string representing time in seconds since epoch, t.
If the function is called without an argument, it will use the current
time.
The format of the returned string is like this:
Wed, DD-Mon-YYYY HH:MM:SS GMT
Nz#%s, %02d-%s-%04d %02d:%02d:%02d GMTr ) r- r. r/ �DAYSZweekdayr0 �MONTHSr( r' r) r1 r2 )r3 r4 r r r �
time2netscapel s r8 )ZGMT�UTCZUT�Zz^([-+])?(\d\d?):?(\d\d)?$c C sj d }| t krd}nTtj| �}|rfdt|jd�� }|jd�rR|dt|jd�� }|jd�dkrf| }|S )Nr i r � �< r �-)� UTC_ZONES� TIMEZONE_RE�search�int�group)�tz�offset�mr r r �offset_from_tz_string� s
rF c
C s� t |�}|tjkrd S ytj|j� �d }W nX tk
r� y t |�}W n tk
r\ d S X d| kopdkn r||}nd S Y nX |d kr�d}|d kr�d}|d kr�d}t | �} t |�}t |�}t |�}|dk �r0tjtj� �d }|d } |}
|| | }| |
} t | �dk�r0| dk�r(|d }n|d }t
||| ||||f�} | d k �r�|d k�r^d}|j � }t |�} | d k�r|d S | | } | S )Nr r r i� �d �2 r9 )
rA r- ZMAXYEAR� MONTHS_LOWER�index�lower�
ValueError�timeZ localtime�absr, �upperrF )
r0 �mon�yr�hrr* r+ rC ZimonZcur_yrrE Ztmpr3 rD r r r � _str2time� sV
rS zV^[SMTWF][a-z][a-z], (\d\d) ([JFMASOND][a-z][a-z]) (\d\d\d\d) (\d\d):(\d\d):(\d\d) GMT$z+^(?:Sun|Mon|Tue|Wed|Thu|Fri|Sat)[a-z]*,?\s*a� ^
(\d\d?) # day
(?:\s+|[-\/])
(\w+) # month
(?:\s+|[-\/])
(\d+) # year
(?:
(?:\s+|:) # separator before clock
(\d\d?):(\d\d) # hour:min
(?::(\d\d))? # optional seconds
)? # optional clock
\s*
([-+]?\d{2,4}|(?![APap][Mm]\b)[A-Za-z]+)? # timezone
\s*
(?:\(\w+\))? # ASCII representation of timezone in parens.
\s*$c C s� t j| �}|rl|j� }tj|d j� �d }t|d �|t|d �t|d �t|d �t|d �f}t|�S | j � } t
j d| d�} dgd \}}}}}} }
t j| �}|dk r�|j� \}}}}}} }
ndS t
|||||| |
�S )
a� Returns time in seconds since epoch of time represented by a string.
Return value is an integer.
None is returned if the format of str is unrecognized, the time is outside
the representable range, or the timezone string is not recognized. If the
string contains no timezone, UTC is assumed.
The timezone in the string may be numerical (like "-0800" or "+0100") or a
string timezone (like "UTC", "GMT", "BST" or "EST"). Currently, only the
timezone strings equivalent to UTC (zero offset) are known to the function.
The function loosely parses the following formats:
Wed, 09 Feb 1994 22:23:32 GMT -- HTTP format
Tuesday, 08-Feb-94 14:15:29 GMT -- old rfc850 HTTP format
Tuesday, 08-Feb-1994 14:15:29 GMT -- broken rfc850 HTTP format
09 Feb 1994 22:23:32 GMT -- HTTP format (no weekday)
08-Feb-94 14:15:29 GMT -- rfc850 format (no weekday)
08-Feb-1994 14:15:29 GMT -- broken rfc850 format (no weekday)
The parser ignores leading and trailing whitespace. The time may be
absent.
If the year is given with only 2 digits, the function will select the
century that makes the year closest to the current date.
r r r r; � � � N� )�STRICT_DATE_REr@ �groupsrI rJ rK rA �floatr, �lstrip�
WEEKDAY_RE�sub�LOOSE_HTTP_DATE_RErS ) �textrE �grP r& r0 rQ rR r* r+ rC r r r � http2time� s
"
ra a� ^
(\d{4}) # year
[-\/]?
(\d\d?) # numerical month
[-\/]?
(\d\d?) # day
(?:
(?:\s+|[-:Tt]) # separator before clock
(\d\d?):?(\d\d) # hour:min
(?::?(\d\d(?:\.\d*)?))? # optional seconds (and fractional)
)? # optional clock
\s*
([-+]?\d\d?:?(:?\d\d)?
|Z|z)? # timezone (Z is "zero meridian", i.e. GMT)
\s*$c
C sd | j � } dgd \}}}}}}}tj| �}|dk rL|j� \}}}}}}}} ndS t|||||||�S )av
As for http2time, but parses the ISO 8601 formats:
1994-02-03 14:15:29 -0100 -- ISO 8601 format
1994-02-03 14:15:29 -- zone is optional
1994-02-03 -- only date
1994-02-03T14:15:29 -- Use T as separator
19940203T141529Z -- ISO 8601 compact format
19940203 -- only date
NrW )r[ � ISO_DATE_REr@ rY rS )
r_ r0 rP rQ rR r* r+ rC rE �_r r r �iso2time' s
rd c C s* | j d�\}}| jd|� | j|d� S )z)Return unmatched part of re.Match object.r N)�span�string)�match�start�endr r r � unmatchedH s rj z^\s*([^=\s;,]+)z&^\s*=\s*\"([^\"\\]*(?:\\.[^\"\\]*)*)\"z^\s*=\s*([^\s;,]*)z\\(.)c
C s< t | t� st�g }�x | D �]}|}g }x�|�r$tj|�}|r�t|�}|jd�}tj|�}|r�t|�}|jd�}tj d|�}n.t
j|�}|r�t|�}|jd�}|j � }nd}|j ||f� q,|j
� jd�r�|j
� dd� }|r�|j |� g }q,tjdd|�\}} | dk�s td|||f ��|}q,W |r |j |� q W |S ) am Parse header values into a list of lists containing key,value pairs.
The function knows how to deal with ",", ";" and "=" as well as quoted
values after "=". A list of space separated tokens are parsed as if they
were separated by ";".
If the header_values passed as argument contains multiple values, then they
are treated as if they were a single value separated by comma ",".
This means that this function is useful for parsing header fields that
follow this syntax (BNF as from the HTTP/1.1 specification, but we relax
the requirement for tokens).
headers = #header
header = (token | parameter) *( [";"] (token | parameter))
token = 1*<any CHAR except CTLs or separators>
separators = "(" | ")" | "<" | ">" | "@"
| "," | ";" | ":" | "\" | <">
| "/" | "[" | "]" | "?" | "="
| "{" | "}" | SP | HT
quoted-string = ( <"> *(qdtext | quoted-pair ) <"> )
qdtext = <any TEXT except <">>
quoted-pair = "\" CHAR
parameter = attribute "=" value
attribute = token
value = token | quoted-string
Each header is represented by a list of key/value pairs. The value for a
simple token (not part of a parameter) is None. Syntactically incorrect
headers will not necessarily be parsed as you would want.
This is easier to describe with some examples:
>>> split_header_words(['foo="bar"; port="80,81"; discard, bar=baz'])
[[('foo', 'bar'), ('port', '80,81'), ('discard', None)], [('bar', 'baz')]]
>>> split_header_words(['text/html; charset="iso-8859-1"'])
[[('text/html', None), ('charset', 'iso-8859-1')]]
>>> split_header_words([r'Basic realm="\"foo\bar\""'])
[[('Basic', None), ('realm', '"foobar"')]]
r z\1N�,z^[=\s;]*rV r z&split_header_words bug: '%s', '%s', %s)�
isinstance�str�AssertionError�HEADER_TOKEN_REr@ rj rB �HEADER_QUOTED_VALUE_RE�HEADER_ESCAPE_REr] �HEADER_VALUE_RE�rstrip�appendr[ �
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r| z([\"\\])c C s� g }xt| D ]l}g }xN|D ]F\}}|dk rTt jd|�sHtjd|�}d| }d||f }|j|� qW |r
|jdj|�� q
W dj|�S )a� Do the inverse (almost) of the conversion done by split_header_words.
Takes a list of lists of (key, value) pairs and produces a single header
value. Attribute values are quoted if needed.
>>> join_header_words([[("text/plain", None), ("charset", "iso-8859-1")]])
'text/plain; charset="iso-8859-1"'
>>> join_header_words([[("text/plain", None)], [("charset", "iso-8859-1")]])
'text/plain, charset="iso-8859-1"'
Nz^\w+$z\\\1z"%s"z%s=%sz; z, )rv r@ �HEADER_JOIN_ESCAPE_REr] rt �join)Zlists�headersry �attr�k�vr r r �join_header_words� s
r� c C s0 | j d�r| dd � } | jd�r,| d d� } | S )N�"r ���)ru �endswith)r_ r r r � strip_quotes� s
r� c C s d}g }x�| D ]�}g }d}x�t |jd ��D ]�\}}|j� }|jd
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f� q*W |r|� s�|jd� |j|� qW |S )a5 Ad-hoc parser for Netscape protocol cookie-attributes.
The old Netscape cookie format for Set-Cookie can for instance contain
an unquoted "," in the expires field, so we have to use this ad-hoc
parser instead of split_header_words.
XXX This may not make the best possible effort to parse all the crap
that Netscape Cookie headers contain. Ronald Tschalar's HTTPClient
parser is probably better, so could do worse than following that if
this ever gives any trouble.
Currently, this is also used for parsing RFC 2109 cookies.
�expires�domain�path�secure�version�port�max-ageF�;�=r NT�0)r� r� r� r� r� r� r� )r� r� )� enumerate�split�strip� partitionrK r� ra rt ) Z
ns_headersZ known_attrsrx Z ns_headerry � version_setZiiZparam�key�sep�val�lcr r r �parse_ns_headers� s@
r� z\.\d+$c C s: t j| �rdS | dkrdS | d dks2| d dkr6dS dS )z*Return True if text is a host domain name.FrV r �.r Tr� )�IPV4_REr@ )r_ r r r �is_HDN s
r� c C sl | j � } |j � }| |kr dS t| �s(dS | j|�}|dksB|dkrFdS |jd�sTdS t|dd� �shdS dS )a� Return True if domain A domain-matches domain B, according to RFC 2965.
A and B may be host domain names or IP addresses.
RFC 2965, section 1:
Host names can be specified either as an IP address or a HDN string.
Sometimes we compare one host name with another. (Such comparisons SHALL
be case-insensitive.) Host A's name domain-matches host B's if
* their host name strings string-compare equal; or
* A is a HDN string and has the form NB, where N is a non-empty
name string, B has the form .B', and B' is a HDN string. (So,
x.y.com domain-matches .Y.com but not Y.com.)
Note that domain-match is not a commutative operation: a.b.c.com
domain-matches .c.com, but not the reverse.
TFr r r� Nr� )rK r� �rfindru )�A�B�ir r r � domain_match s
r� c C s t j| �rdS dS )zdReturn True if text is a sort-of-like a host domain name.
For accepting/blocking domains.
FT)r� r@ )r_ r r r �liberal_is_HDNB s
r� c C sb | j � } |j � }t| �o t|�s0| |kr,dS dS |jd�}|rL| j|�rLdS | r^| |kr^dS dS )z\For blocking/accepting domains.
A and B may be host domain names or IP addresses.
TFr� )rK r� ru r� )r� r� � initial_dotr r r �user_domain_matchL s
r� z:\d+$c C sB | j � }tjj|�d }|dkr,| jdd�}tjd|d�}|j� S )z�Return request-host, as defined by RFC 2965.
Variation from RFC: returned value is lowercased, for convenient
comparison.
r rV ZHost)� get_full_url�urllib�parseZurlparseZ
get_header� cut_port_rer] rK )�request�url�hostr r r � request_hosta s r� c C s6 t | � }}|jd�dkr.tj|� r.|d }||fS )zzReturn a tuple (request-host, effective request-host name).
As defined by RFC 2965, except both are lowercased.
r� r z.localr� )r� �findr� r@ )r� �erhn�req_hostr r r �eff_request_hostq s r� c C s4 | j � }tjj|�}t|j�}|jd�s0d| }|S )z6Path component of request-URI, as defined by RFC 2965.�/)r� r� r� Zurlsplit� escape_pathr� ru )r� r� �partsr� r r r � request_path| s
r� c C s^ | j }|jd�}|dkrV||d d � }y t|� W qZ tk
rR td|� d S X nt}|S )N�:r r znonnumeric port: '%s')r� r� rA rL r �DEFAULT_HTTP_PORT)r� r� r� r� r r r � request_port� s
r� z%/;:@&=+$,!~*'()z%([0-9a-fA-F][0-9a-fA-F])c C s d| j d�j� S )Nz%%%sr )rB rO )rg r r r �uppercase_escaped_char� s r� c C s t jj| t�} tjt| �} | S )zEEscape any invalid characters in HTTP URL, and uppercase all escapes.)r� r� Zquote�HTTP_PATH_SAFE�ESCAPED_CHAR_REr] r� )r� r r r r� � s
r� c C sP | j d�}|dkrL| |d d� }|j d�}t| �rL|dksD|dkrLd| S | S )aB Return reach of host h, as defined by RFC 2965, section 1.
The reach R of a host name H is defined as follows:
* If
- H is the host domain name of a host; and,
- H has the form A.B; and
- A has no embedded (that is, interior) dots; and
- B has at least one embedded dot, or B is the string "local".
then the reach of H is .B.
* Otherwise, the reach of H is H.
>>> reach("www.acme.com")
'.acme.com'
>>> reach("acme.com")
'acme.com'
>>> reach("acme.local")
'.local'
r� r r NZlocal)r� r� )�hr� �br r r �reach� s
r� c C s$ t | �}t|t| j��s dS dS dS )z�
RFC 2965, section 3.3.6:
An unverifiable transaction is to a third-party host if its request-
host U does not domain-match the reach R of the request-host O in the
origin transaction.
TFN)r� r� r� Zorigin_req_host)r� r� r r r �is_third_party� s
r� c @ sN e Zd ZdZddd�Zdd� Zddd �Zd
d � Zdd d
�Zdd� Z dd� Z
dS )r a� HTTP Cookie.
This class represents both Netscape and RFC 2965 cookies.
This is deliberately a very simple class. It just holds attributes. It's
possible to construct Cookie instances that don't comply with the cookie
standards. CookieJar.make_cookies is the factory function for Cookie
objects -- it deals with cookie parsing, supplying defaults, and
normalising to the representation used in this class. CookiePolicy is
responsible for checking them to see whether they should be accepted from
and returned to the server.
Note that the port may be present in the headers, but unspecified ("Port"
rather than"Port=80", for example); if this is the case, port is None.
Fc C s� |d k rt |�}| d k r$t t| ��} |d kr<|dkr<td��|| _|| _|| _|| _|| _|j� | _ || _
|| _ | | _ |
| _
| | _| | _|
| _|| _|| _|| _tj|�| _d S )NTz-if port is None, port_specified must be false)rA rZ rL r� rz r{ r� �port_specifiedrK r� �domain_specified�domain_initial_dotr� �path_specifiedr� r� �discard�comment� comment_url�rfc2109�copy�_rest)�selfr� rz r{ r� r� r� r� r� r� r� r� r� r� r� r� �restr� r r r �__init__� s.
zCookie.__init__c C s
|| j kS )N)r� )r� rz r r r �has_nonstandard_attr s zCookie.has_nonstandard_attrNc C s | j j||�S )N)r� �get)r� rz �defaultr r r �get_nonstandard_attr s zCookie.get_nonstandard_attrc C s || j |< d S )N)r� )r� rz r{ r r r �set_nonstandard_attr s zCookie.set_nonstandard_attrc C s, |d krt j � }| jd k r(| j|kr(dS dS )NTF)rM r� )r� �nowr r r �
is_expired s
zCookie.is_expiredc C sX | j d krd}n
d| j }| j| | j }| jd k rFd| j| jf }n| j}d||f S )NrV r� z%s=%sz<Cookie %s for %s>)r� r� r� r{ rz )r� �p�limitZ namevaluer r r �__str__% s
zCookie.__str__c C sp g }x,dD ]$}t | |�}|jd|t|�f � q
W |jdt| j� � |jdt| j� � d| jjdj|�f S )Nr� rz r{ r� r� r� r� r� r� r� r� r� r� r� r� z%s=%szrest=%sz
rfc2109=%sz%s(%s)z, )r� rz r{ r� r� r� r� r� r� r� r� r� r� r� r� )�getattrrt �reprr� r� � __class__�__name__r~ )r� r rz r� r r r �__repr__/ s
zCookie.__repr__)F)N)N) r� �
__module__� __qualname__�__doc__r� r� r� r� r� r� r� r r r r r � s
c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
S ) r a Defines which cookies get accepted from and returned to server.
May also modify cookies, though this is probably a bad idea.
The subclass DefaultCookiePolicy defines the standard rules for Netscape
and RFC 2965 cookies -- override that if you want a customized policy.
c C s
t � �dS )z�Return true if (and only if) cookie should be accepted from server.
Currently, pre-expired cookies never get this far -- the CookieJar
class deletes such cookies itself.
N)�NotImplementedError)r� �cookier� r r r �set_okG s zCookiePolicy.set_okc C s
t � �dS )zAReturn true if (and only if) cookie should be returned to server.N)r� )r� r� r� r r r � return_okP s zCookiePolicy.return_okc C s dS )zMReturn false if cookies should not be returned, given cookie domain.
Tr )r� r� r� r r r �domain_return_okT s z CookiePolicy.domain_return_okc C s dS )zKReturn false if cookies should not be returned, given cookie path.
Tr )r� r� r� r r r �path_return_okY s zCookiePolicy.path_return_okN)r� r� r� r� r� r� r� r� r r r r r > s
c @ s� e Zd ZdZdZdZdZdZeeB Zdddddddddeddf d d
�Z d d � Z
d
d� Z dd� Z dd� Z
dd� Zdd� Zdd� Zdd� Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Z d1d2� Z d3d4� Z d5d6� Z dS )7r zBImplements the standard rules for accepting and returning cookies.r r rT r NTFc
C sp || _ || _|| _|| _|| _|| _| | _|
| _| | _| | _ |dk rPt
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The LWPCookieJar saves a sequence of "Set-Cookie3" lines.
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doesn't lose information about RFC 2965 cookies.
Additional methods
as_lwp_str(ignore_discard=True, ignore_expired=True)
Tc C s\ t j � }g }x>| D ]6}| r$|jr$q| r6|j|�r6q|jdt|� � qW dj|dg �S )z�Return cookies as a string of "\n"-separated "Set-Cookie3" headers.
ignore_discard and ignore_expires: see docstring for FileCookieJar.save
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WARNING: you may want to backup your browser's cookies file if you use
this class to save cookies. I *think* it works, but there have been
bugs in the past!
This class differs from CookieJar only in the format it uses to save and
load cookies to and from a file. This class uses the Mozilla/Netscape
`cookies.txt' format. lynx uses this file format, too.
Don't expect cookies saved while the browser is running to be noticed by
the browser (in fact, Mozilla on unix will overwrite your saved cookies if
you change them on disk while it's running; on Windows, you probably can't
save at all while the browser is running).
Note that the Mozilla/Netscape format will downgrade RFC2965 cookies to
Netscape cookies on saving.
In particular, the cookie version and port number information is lost,
together with information about whether or not Path, Port and Discard were
specified by the Set-Cookie2 (or Set-Cookie) header, and whether or not the
domain as set in the HTTP header started with a dot (yes, I'm aware some
domains in Netscape files start with a dot and some don't -- trust me, you
really don't want to know any more about this).
Note that though Mozilla and Netscape use the same format, they use
slightly different headers. The class saves cookies using the Netscape
header by default (Mozilla can cope with that).
z #( Netscape)? HTTP Cookie Filezr# Netscape HTTP Cookie File
# http://curl.haxx.se/rfc/cookie_spec.html
# This is a generated file! Do not edit.
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z MozillaCookieJar._really_loadNFc C s |d kr"| j d k r| j }ntt��t|d���}|j| j� tj� }x�| D ]�}| rZ|jrZqH| rl|j|�rlqH|j rxd}nd}|j
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