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� �T�Qc @ sY d Z d d l Z d d l Z d d l m Z m Z d d l m Z d d l m Z m Z d d l m Z d d l m Z m Z d d l m Z m Z d d l m Z m Z d � Z d e f d � � YZ d e f d � � YZ e � Z d e e f d � � YZ d e f d � � YZ d e f d � � YZ d e f d � � YZ d d l m Z d S( s� flask.sessions ~~~~~~~~~~~~~~ Implements cookie based sessions based on itsdangerous. :copyright: (c) 2012 by Armin Ronacher. :license: BSD, see LICENSE for more details. i����N( t b64encodet b64decode( t datetime( t http_datet parse_date( t CallbackDicti ( t Markupt json( t iteritemst text_type( t URLSafeTimedSerializert BadSignaturec C s | j d d d | j S( Ni< i ( t dayst seconds( t td( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt total_seconds s t SessionMixinc B sA e Z d Z d � Z d � Z e e e � Z [ [ e Z e Z RS( sv Expands a basic dictionary with an accessors that are expected by Flask extensions and users for the session. c C s | j d t � S( Nt _permanent( t gett False( t self( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt _get_permanent! s c C s t | � | d <d S( NR ( t bool( R t value( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt _set_permanent$ s ( t __name__t __module__t __doc__R R t propertyt permanentR t newt Truet modified( ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyR s t TaggedJSONSerializerc B s e Z d Z d � Z d � Z RS( s� A customized JSON serializer that supports a few extra types that we take for granted when serializing (tuples, markup objects, datetime). c s( � f d � � t j � | � d d �S( Nc sn t | t � r3 i g | D] } � | � ^ q d 6St | t j � rS i | j d 6St | t � r| i t | � j d � d 6St t | d d � � r� i t | j � � d 6St | t � r� g | D] } � | � ^ q� St | t � r� i t | � d 6St | t � r&t � f d � t | � D� � St | t � rjy t | � SWqjt k rft d | � � qjXn | S( Ns ts ut asciis bt __html__s ms dc 3 s' | ] \ } } | � | � f Vq d S( N( ( t .0t kt v( t _tag( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pys <genexpr>K s u� A byte string with non-ASCII data was passed to the session system which can only store unicode strings. Consider base64 encoding your string (String was %r)( t isinstancet tuplet uuidt UUIDt hext bytesR t decodet callablet getattrt NoneR R# t listR R t dictR t strt UnicodeErrort UnexpectedUnicodeError( R t x( R' ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyR' = s* $ t separatorst ,t :( R9 R: ( R t dumps( R R ( ( R' s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyR; < s c C s d � } t j | d | �S( Nc S s� t | � d k r | St t | � � \ } } | d k rD t | � S| d k r] t j | � S| d k rs t | � S| d k r� t | � S| d k r� t | � S| S( Ni s ts us bs ms d( t lent nextR R) R* R+ R R R ( t objt the_keyt the_value( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt object_hookX s RA ( R t loads( R R RA ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyRB W s ( R R R R; RB ( ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyR! 7 s t SecureCookieSessionc B s e Z d Z d d � Z RS( s/ Baseclass for sessions based on signed cookies.c C s) d � } t j | | | � t | _ d S( Nc S s t | _ d S( N( R R ( R ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt on_updateq s ( R t __init__R R ( R t initialRD ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyRE p s N( R R R R1 RE ( ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyRC m s t NullSessionc B s8 e Z d Z d � Z e Z Z Z Z Z Z Z [ RS( s� Class used to generate nicer error messages if sessions are not available. Will still allow read-only access to the empty session but fail on setting. c O s t d � � d S( Ns� the session is unavailable because no secret key was set. Set the secret_key on the application to something unique and secret.( t RuntimeError( R t argst kwargs( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt _fail} s ( R R R RK t __setitem__t __delitem__t cleart popt popitemt updatet setdefault( ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyRG w s t SessionInterfacec B sk e Z d Z e Z e Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z RS( s� The basic interface you have to implement in order to replace the default session interface which uses werkzeug's securecookie implementation. The only methods you have to implement are :meth:`open_session` and :meth:`save_session`, the others have useful defaults which you don't need to change. The session object returned by the :meth:`open_session` method has to provide a dictionary like interface plus the properties and methods from the :class:`SessionMixin`. We recommend just subclassing a dict and adding that mixin:: class Session(dict, SessionMixin): pass If :meth:`open_session` returns `None` Flask will call into :meth:`make_null_session` to create a session that acts as replacement if the session support cannot work because some requirement is not fulfilled. The default :class:`NullSession` class that is created will complain that the secret key was not set. To replace the session interface on an application all you have to do is to assign :attr:`flask.Flask.session_interface`:: app = Flask(__name__) app.session_interface = MySessionInterface() .. versionadded:: 0.8 c C s | j � S( s� Creates a null session which acts as a replacement object if the real session support could not be loaded due to a configuration error. This mainly aids the user experience because the job of the null session is to still support lookup without complaining but modifications are answered with a helpful error message of what failed. This creates an instance of :attr:`null_session_class` by default. ( t null_session_class( R t app( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt make_null_session� s c C s t | | j � S( s� Checks if a given object is a null session. Null sessions are not asked to be saved. This checks if the object is an instance of :attr:`null_session_class` by default. ( R( RT ( R R> ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt is_null_session� s c C s� | j d d k r | j d S| j d d k r� d | j d j d d � d } | d k rg d } n | d k r� | j | � } | d k r� | j d � } q� n | Sd S( s� Helpful helper method that returns the cookie domain that should be used for the session cookie if session cookies are used. t SESSION_COOKIE_DOMAINt SERVER_NAMEt .R: i i s .localhostt /N( t configR1 t rsplitt get_cookie_patht lstrip( R RU t rvt path( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt get_cookie_domain� s ! c C s | j d p | j d p d S( s� Returns the path for which the cookie should be valid. The default implementation uses the value from the SESSION_COOKIE_PATH`` config var if it's set, and falls back to ``APPLICATION_ROOT`` or uses ``/`` if it's `None`. t SESSION_COOKIE_PATHt APPLICATION_ROOTR[ ( R\ ( R RU ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyR^ � s c C s | j d S( s� Returns True if the session cookie should be httponly. This currently just returns the value of the ``SESSION_COOKIE_HTTPONLY`` config var. t SESSION_COOKIE_HTTPONLY( R\ ( R RU ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt get_cookie_httponly� s c C s | j d S( s� Returns True if the cookie should be secure. This currently just returns the value of the ``SESSION_COOKIE_SECURE`` setting. t SESSION_COOKIE_SECURE( R\ ( R RU ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt get_cookie_secure� s c C s | j r t j � | j Sd S( s A helper method that returns an expiration date for the session or `None` if the session is linked to the browser session. The default implementation returns now + the permanent session lifetime configured on the application. N( R R t utcnowt permanent_session_lifetime( R RU t session( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt get_expiration_time� s c C s t � � d S( s# This method has to be implemented and must either return `None` in case the loading failed because of a configuration error or an instance of a session object which implements a dictionary like interface + the methods and attributes on :class:`SessionMixin`. N( t NotImplementedError( R RU t request( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt open_session� s c C s t � � d S( s� This is called for actual sessions returned by :meth:`open_session` at the end of the request. This is still called during a request context so if you absolutely need access to the request you can do that. N( Rm ( R RU Rk t response( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt save_session s ( R R R RG RT R t pickle_basedRV RW Rb R^ Rf Rh Rl Ro Rq ( ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyRS � s t SecureCookieSessionInterfacec B sP e Z d Z d Z e e j � Z d Z e Z e Z d � Z d � Z d � Z RS( su The default session interface that stores sessions in signed cookies through the :mod:`itsdangerous` module. s cookie-sessiont hmacc C sM | j s d St d | j d | j � } t | j d | j d | j d | �S( Nt key_derivationt digest_methodt saltt serializert signer_kwargs( t secret_keyR1 R3 Ru Rv R Rw Rx ( R RU Ry ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt get_signing_serializer" s c C s� | j | � } | d k r d S| j j | j � } | sD | j � St | j � } y& | j | d | �} | j | � SWn t k r� | j � SXd S( Nt max_age( R{ R1 t cookiesR t session_cookie_namet session_classR Rj RB R ( R RU Rn t st valR| t data( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyRo - s c C s� | j | � } | j | � } | sP | j rL | j | j d | d | �n d S| j | � } | j | � } | j | | � } | j | � j t | � � } | j | j | d | d | d | d | d | �d S( Nt domainRa t expirest httponlyt secure( Rb R^ R t delete_cookieR~ Rf Rh Rl R{ R; R3 t set_cookie( R RU Rk Rp R� Ra R� R� R� R� ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyRq ; s ( R R R Rw t staticmethodt hashlibt sha1Rv Ru t session_json_serializerRx RC R R{ Ro Rq ( ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyRs s ( R6 ( R R* R� t base64R R R t werkzeug.httpR R t werkzeug.datastructuresR t R R t _compatR R t itsdangerousR R R t objectR R! R� RC RG RS Rs t flask.debughelpersR6 ( ( ( s= /opt/imh-python/lib/python2.7/site-packages/flask/sessions.pyt <module> s$ 3 �<
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