ó H()Qc@s"ddlmZddlZddlmZmZyddlmZWnek reddlZnXddl Z ddl m Z ddl m Z ddlmZddlmZdd lmZdd lmZdd lmZe je jZd efd „ƒYZdefd„ƒYZdS(iÿÿÿÿ(tunicode_literalsN(tdatetimet timedelta(tcPickle(tsettings(tSuspiciousOperation(tconstant_time_compare(tget_random_string(t salted_hmac(ttimezone(t force_bytest CreateErrorcBseZdZRS(u‡ Used internally as a consistent exception type to catch from save (see the docstring for SessionBase.save() for details). (t__name__t __module__t__doc__(((s>../Django//lib/python/django/contrib/sessions/backends/base.pyR st SessionBasecBs¦eZdZdZdZd*d„Zd„Zd„Zd„Z d„Z d*d„Z d „Z d „Z d „Zd „Zd „Zd„Zd„Zd„Zd„Zd„Zd„Zd„Zd„Zd„Zd„Zd„Zd„Zd„Zd„Zd„Ze eƒZ!e"d„Z#e e#ƒZ$d„Z%d„Z&d „Z'd!„Z(d"„Z)d#„Z*d$„Z+d%„Z,e"d&„Z-d*d'„Z.d(„Z/e0d)„ƒZ1RS(+u- Base class for all Session classes. u testcookieuworkedcCs||_t|_t|_dS(N(t _session_keytFalsetaccessedtmodified(tselft session_key((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt__init__%s  cCs ||jkS(N(t_session(Rtkey((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt __contains__*scCs |j|S(N(R(RR((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt __getitem__-scCs||j|../Django//lib/python/django/contrib/sessions/backends/base.pyt __setitem__0s cCs|j|=t|_dS(N(RRR(RR((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt __delitem__4s cCs|jj||ƒS(N(Rtget(RRtdefault((s>../Django//lib/python/django/contrib/sessions/backends/base.pyR8scGs.|jp||jk|_|jj||ŒS(N(RRtpop(RRtargs((s>../Django//lib/python/django/contrib/sessions/backends/base.pyR!;scCs8||jkr|j|St|_||j|<|SdS(N(RRR(RRR((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt setdefault?s    cCs|j||j../Django//lib/python/django/contrib/sessions/backends/base.pytset_test_cookieGscCs|j|jƒ|jkS(N(RR%R$(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyttest_cookie_workedJscCs||j=dS(N(R%(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pytdelete_test_cookieMscCs#d|jj}t||ƒjƒS(Nudjango.contrib.sessions(t __class__R Rt hexdigest(RRtkey_salt((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt_hashPscCsHtj|tjƒ}|j|ƒ}tj|jƒd|ƒjdƒS(uEReturns the given session dictionary pickled and encoded as a string.t:uascii(tpickletdumpstHIGHEST_PROTOCOLR,tbase64t b64encodetencodetdecode(Rt session_dicttpickledthash((s>../Django//lib/python/django/contrib/sessions/backends/base.pyR3TscCsŠtjt|ƒƒ}y\|jddƒ\}}|j|ƒ}t|jƒ|ƒsctdƒ‚n tj |ƒSWnt k r…iSXdS(NR-iuSession data corrupted( R1t b64decodeR tsplitR,RR4RR.tloadst Exception(Rt session_datat encoded_dataR7R6t expected_hash((s>../Django//lib/python/django/contrib/sessions/backends/base.pyR4Zs cCs|jj|ƒt|_dS(N(RtupdateRR(Rtdict_((s>../Django//lib/python/django/contrib/sessions/backends/base.pyR?iscCs ||jkS(N(R(RR((s>../Django//lib/python/django/contrib/sessions/backends/base.pythas_keymscCs |jjƒS(N(Rtkeys(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyRBpscCs |jjƒS(N(Rtvalues(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyRCsscCs |jjƒS(N(Rtitems(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyRDvscCs |jjƒS(N(Rtiterkeys(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyREyscCs |jjƒS(N(Rt itervalues(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyRF|scCs |jjƒS(N(Rt iteritems(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyRGscCsi|_t|_t|_dS(N(t_session_cacheRRR(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pytclear‚s  cCs3x,tr.tdtƒ}|j|ƒsPqqW|S(u*Returns session key that isn't being used.i (RRtVALID_KEY_CHARStexists(RR((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt_get_new_session_keyŠs  cCs(|jdkr!|jƒ|_n|jS(N(RtNoneRL(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt_get_or_create_session_key’scCs|jS(N(R(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt_get_session_key—scCs_t|_y |jSWnAtk rW|jdks9|rEi|_qX|jƒ|_nX|jS(u  Lazily loads session from storage (unless "no_load" is True, when only an empty dict is stored) and stores it in the current instance. N(RRRHtAttributeErrorRRMtload(Rtno_load((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt _get_sessionœs    cKs›y|d}Wntk r-tjƒ}nXy|d}Wn tk r^|jdƒ}nX|sltjSt|tƒs|S||}|jd|j S(uÕGet the number of seconds until the session expires. Optionally, this function accepts `modification` and `expiry` keyword arguments specifying the modification and expiry of the session. u modificationuexpiryu_session_expiryi€Q( tKeyErrorR tnowRRtSESSION_COOKIE_AGEt isinstanceRtdaystseconds(Rtkwargst modificationtexpirytdelta((s>../Django//lib/python/django/contrib/sessions/backends/base.pytget_expiry_age­s   cKs•y|d}Wntk r-tjƒ}nXy|d}Wn tk r^|jdƒ}nXt|tƒrr|S|s„tj}n|td|ƒS(uÔGet session the expiry date (as a datetime object). 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N(RItdeletetcreate(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pytflushs  cCs6|j}|j}|jƒ||_|j|ƒdS(uW Creates a new session key, whilst retaining the current session data. N(RHRRdRc(RtdataR((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt cycle_key s     cCs t‚dS(uG Returns True if the given session_key already exists. N(tNotImplementedError(RR((s>../Django//lib/python/django/contrib/sessions/backends/base.pyRKscCs t‚dS(uÆ Creates a new session instance. Guaranteed to create a new object with a unique key and will have saved the result once (with empty data) before the method returns. N(Rh(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyRdscCs t‚dS(uå Saves the session data. If 'must_create' is True, a new session object is created (otherwise a CreateError exception is raised). Otherwise, save() can update an existing object with the same key. N(Rh(Rt must_create((s>../Django//lib/python/django/contrib/sessions/backends/base.pytsave$scCs t‚dS(u} Deletes the session data under this key. If the key is None, the current session key value is used. N(Rh(RR((s>../Django//lib/python/django/contrib/sessions/backends/base.pyRc,scCs t‚dS(uB Loads the session data and returns a dictionary. N(Rh(R((s>../Django//lib/python/django/contrib/sessions/backends/base.pyRQ3scCs t‚dS(u Remove expired sessions from the session store. If this operation isn't possible on a given backend, it should raise NotImplementedError. If it isn't necessary, because the backend has a built-in expiration mechanism, it should be a no-op. N(Rh(tcls((s>../Django//lib/python/django/contrib/sessions/backends/base.pyt clear_expired9s N(2R R RR%R$RMRRRRRRR!R#R&R'R(R,R3R4R?RARBRCRDRERFRGRIRLRNROtpropertyRRRSRR^R_R`RbReRgRKRdRjRcRQt classmethodRl(((s>../Django//lib/python/django/contrib/sessions/backends/base.pyRsX                                     (t __future__RR1RRtdjango.utils.six.movesRR.t ImportErrortstringt django.confRtdjango.core.exceptionsRtdjango.utils.cryptoRRRt django.utilsR tdjango.utils.encodingR tascii_lowercasetdigitsRJR;R tobjectR(((s>../Django//lib/python/django/contrib/sessions/backends/base.pyts"