�
DaYc@s�dZd
dl
Z
d
dlZd
dlmZ
d
dlmZ
d
dlmZ
d
dl	m
Z
mZ
d
dlm
Z

d
dlmZ
d
d	lmZ
d
Zer�eddd
ddg�
Zn	e�Zedddg�
Zeddg�
Zeddg�
Zeddg�
Zd
dlZejddedd�

d
dlmZ
ef
Zef
Ze f
Z!yGd
dl"m"Z"m#Z#
d
dl$m$Z$
ee"e#f7Zee$f
7ZWne%k
r�



n
Xy!d
d l&m'Z'
ee'f
7ZWne%k
r�



n
Xd
d!lm(Z(m)Z)m*Z*
ee(f
7Zee)f
7Ze!e*f
7Z!ee+d"d#d$d%d&d'd(d)g�
fee+d#d&d*d+d)g�
fe!e+d,d-d.d/d0d'g�
fee+d,d1d#d0d2d&d3d'd4g	�
ffZ,d5ef
d6��YZ-d7�Z.d8�Z/d9�Z0d:�Z1d;�Z2d<ef
d=��YZ3d>e3f
d?��YZ4yd
d@l5m6Z6
Wne%k
rj


dA�Z6n
XdBe7f
dC��YZ8dDe8efdE��YZ9dFe8efdG��YZ:dS(Hsj

    jinja2.sandbox
    ~~~~~~~~~~~~~~

    Adds a sandbox layer to Jinja as it was the default behavior in the old
    Jinja 1 releases.  This sandbox is slightly different from Jinja 1 as the
    default behavior is easier to use.

    The behavior can be changed by subclassing the environment.

    :copyright: (c) 2017 by the Jinja Team.
    :license: BSD.
i����N(
tMapping(
tEnvironment(
t
SecurityError(tstring_typestPY2(
tMarkup(
tEscapeFormatter(
t	Formatteri��
tfunc_closuret	func_codet	func_dictt
func_defaultstfunc_globalstim_classtim_functim_selftgi_frametgi_codetcr_frametcr_codetag_codetag_frametignoresthe sets moduletmodulesjinja2.sandbox(
tdeque(tUserDictt	DictMixin(
tUserList(
tSet(t
MutableSettMutableMappingtMutableSequencetaddtcleartdifference_updatetdiscardtpoptremovetsymmetric_difference_updatetupdatetpopitemt
setdefaulttappendtreversetinserttsorttextendt
appendleftt
extendlefttpoplefttrotatet_MagicFormatMappingc
Bs2eZ
dZd
�Zd�Zd�Zd�ZRS(s�This class implements a dummy wrapper to fix a bug in the Python
    standard library for string formatting.

    See https://bugs.python.org/issue13598 for information about why
    this is necessary.
    cCs|
|_||_
d
|_dS(Ni(t_argst_kwargst_last_index(tselftargstkwargs((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyt__init__rs
	
	
cCsa|
d
krV|j}|jd7_y|j
|SWntk
rF


n
Xt|�
}
n|j|
S(Nti
(R6R4tLookupErrortstrR5(R7tkeytidx((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyt__getitem__ws

	







c

Cs
t|j
�
S(
N(titerR5(
R7((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyt__iter__�s
c

Cs
t|j
�
S(
N(tlenR5(
R7((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyt__len__�s
(t__name__t
__module__t__doc__R:R@RBRD(((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR3js
			c
CsOt|t
jt
jf�s+|jd
kr/dS|j}
t|
t�rK|
SdS(Ntformat(t
isinstancettypest
MethodTypetBuiltinMethodTypeREtNonet__self__R(tcallabletobj((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pytinspect_format_method�s




	

cGs5t|�}
t
|
�
tkr1td
t�
�
n|
S(sWA range that can't generate ranges with a length of more than
    MAX_RANGE items.
    s+range too big, maximum size for range is %d(trangeRCt	MAX_RANGEt
OverflowError(R8trng((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyt
safe_range�s





c

Cs
t|_
|S(
snMarks a function or method as unsafe.

    ::

        @unsafe
        def delete(self):
            pass
    (tTruetunsafe_callable(
t
f((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pytunsafe�s		
cCs7
t|t
j�r%|
tkr*
tSn
t|t
j�rV|
tksO|
tkr*
tSn�t|t�rx|
d
kr*
tSn�t|t
jt
j	t
j
f�r�tSt|t
j�r�|
tkr*
tSnht
t
d�r�t|t
j�r�|
tkr*
tSn4t
t
d�r*
t|t
j�r*
|
tkr*
tSn|
jd�
S(s�
Test if the attribute given is an internal python attribute.  For
    example this function returns `True` for the `func_code` attribute of
    python objects.  This is useful if the environment method
    :meth:`~SandboxedEnvironment.is_safe_attribute` is overridden.

    >>> from jinja2.sandbox import is_internal_attribute
    >>> is_internal_attribute(str, "mro")
    True
    >>> is_internal_attribute(str, "upper")
    False
    tmrot
CoroutineTypetAsyncGeneratorTypet__(RIRJtFunctionTypetUNSAFE_FUNCTION_ATTRIBUTESRWRKtUNSAFE_METHOD_ATTRIBUTESttypetCodeTypet
TracebackTypet	FrameTypet
GeneratorTypetUNSAFE_GENERATOR_ATTRIBUTESthasattrR\tUNSAFE_COROUTINE_ATTRIBUTESR]t!UNSAFE_ASYNC_GENERATOR_ATTRIBUTESt
startswith(RPtattr((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pytis_internal_attribute�s,









!




!


!


cCs4x-tD]%\}}t
||�r|
|kSqWtS(
s�This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    (t
_mutable_specRItFalse(RPRlttypespecRZ((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pytmodifies_known_mutable�s


tSandboxedEnvironmentcBs�eZ
dZeZiejd
6ejd6ejd6ej	d6ej
d6ejd6ejd6Z
iejd
6ejd6Ze�Ze�Zd�Zd	�Zd
�Zd�Zd�Zd
�Zd�Zd�Zd�Zd�Zd�ZRS(s�
The sandboxed environment.  It works like the regular environment but
    tells the compiler to generate sandboxed code.  Additionally subclasses of
    this environment may override the methods that tell the runtime what
    attributes or functions are safe to access.

    If the template tries to access insecure code a :exc:`SecurityError` is
    raised.  However also other exceptions may occur during the rendering so
    the caller has to ensure that all exceptions are caught.
    t
+t
-t
*t
/s//s**t
%c
CstS(
s�Called during template compilation with the name of a unary
        operator to check if it should be intercepted at runtime.  If this
        method returns `True`, :meth:`call_unop` is excuted for this unary
        operator.  The default implementation of :meth:`call_unop` will use
        the :attr:`unop_table` dictionary to perform the operator with the
        same logic as the builtin one.

        The following unary operators are interceptable: ``+`` and ``-``

        Intercepted calls are always slower than the native operator call,
        so make sure only to intercept the ones you are interested in.

        .. versionadded:: 2.6
        (
Ro(R7toperator((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pytintercept_unop+
sc
OsHtj
||
|�

t|jd
<|jj�|_|jj�|_dS(NRR(	R
R:RVtglobalstdefault_binop_tabletcopytbinop_tabletdefault_unop_tablet
unop_table(R7R8R9((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR:=
s




cCs|jd
�
pt
|
|�S(sY
The sandboxed environment will call this method to check if the
        attribute of an object is safe to access.  Per default all attributes
        starting with an underscore are considered private as well as the
        special attributes of internal python objects as returned by the
        :func:`is_internal_attribute` function.
        t
_(RkRm(R7RPRltvalue((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pytis_safe_attributeC
scCs#t|
d
t
�p!t|
dt
�S(s
Check if an object is safely callable.  Per default a function is
        considered safe unless the `unsafe_callable` attribute exists and is
        True.  Override this method to alter the behavior, but this won't
        affect the `unsafe` decorator from this module.
        RXtalters_data(tgetattrRo(R7RP((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pytis_safe_callableL
s
cCs|j|||�S(
s�For intercepted binary operator calls (:meth:`intercepted_binops`)
        this function is executed instead of the builtin operator.  This can
        be used to fine tune the behavior of certain operators.

        .. versionadded:: 2.6
        (
R}(R7tcontextRxtlefttright((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyt
call_binopU
scCs|j||�
S(
s�For intercepted unary operator calls (:meth:`intercepted_unops`)
        this function is executed instead of the builtin operator.  This can
        be used to fine tune the behavior of certain operators.

        .. versionadded:: 2.6
        (
R(R7R�Rxtarg((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyt	call_unop^
scCs�y|
|SWn�tt
fk
r�


t|t�r�yt|�
}Wntk
rT


q�Xyt|
|�}Wntk
r{


q�X|j|
||�r�|S|j	|
|�Sq�n
X|j
d
|
d|�S(s(Subscribe an object from sandboxed code.RPtname(t	TypeErrorR<RIRR=t	ExceptionR�tAttributeErrorR�tunsafe_undefinedt	undefined(R7RPtargumentRlR�((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pytgetitemg
s 














cCs�yt|
|�}Wn7t
k
rL


y|
|SWqvttfk
rH


qvXn*X|j|
||�rf|S|j|
|�S|jd
|
d|�S(s�Subscribe an object from sandboxed code and prefer the
        attribute.  The attribute passed *must* be a bytestring.
        RPR�(R�R�R�R<R�R�R�(R7RPt	attributeR�((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR�|
s









cCs/|jd
||
j
jfd|d|
dt�
S(s1Return an undefined object for unsafe attributes.s.access to attribute %r of %r object is unsafe.R�RPtexc(R�t	__class__RER(R7RPR�((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR��
s	

cCsdt|
t
�r$t||
j�}nt|�
}t||�}|j|
||�}t|
�
|�
S(
s�If a format call is detected, then this is routed through this
        method so that our safety sandbox can be used for it.
        (RIRtSandboxedEscapeFormattertescapetSandboxedFormatterR3tvformatRb(R7t
sR8R9t	formattertrv((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyt
format_string�
s



cOsct|�
}|dk	r+|j|||�S|j|�
sPtd
|f
�
�
n|
j|||�
S(s#Call an object from sandboxed code.s%r is not safely callableN(RQRMR�R�Rtcall(t_SandboxedEnvironment__selft_SandboxedEnvironment__contextt_SandboxedEnvironment__objR8R9tfmt((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR��
s



(RERFRGRWt	sandboxedRxR tsubtmulttruedivtfloordivtpowtmodR{tpostnegR~t	frozensettintercepted_binopstintercepted_unopsRyR:R�R�R�R�R�R�R�R�R�(((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyRr�s4	


















																tImmutableSandboxedEnvironmentc
BseZ
dZd
�ZRS(s�Works exactly like the regular `SandboxedEnvironment` but does not
    permit modifications on the builtin mutable objects `list`, `set`, and
    `dict` by using the :func:`modifies_known_mutable` function.
    cCs*tj
||
||�stSt|
|�S(
N(RrR�RoRq(R7RPRlR�((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR��
s


(RERFRGR�(((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR��
s(
tformatter_field_name_splitc


Cs
|j�S(
N(
t_formatter_field_name_split(
t
field_name((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR��
s
tSandboxedFormatterMixinc
BseZ
d�Zd
�ZRS(cCs
|
|_dS(
N(
t_env(R7tenv((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR:�
s
c	Cs{t|
�
\}}|j
|||�}xG|D]?\}}|rX|jj||�}q.|jj||�}q.W||fS(
N(R�t	get_valueR�R�R�(	R7R�R8R9tfirsttrestRPtis_attrt
i((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyt	get_field�
s





(RERFR:R�(((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR��
s	R�c
BseZ
d�ZRS(
cCs!tj
||
�
tj
|�

dS(
N(R�R:R(R7R�((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR:�
s

(RERFR:(((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR��
sR�c
BseZ
d�ZRS(
cCs$tj
||
�
tj
||�
dS(
N(R�R:R(R7R�R�((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR:�
s

(RERFR:(((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyR��
s(;RGRJRxtcollectionsRtjinja2.environmentR
tjinja2.exceptionsRtjinja2._compatRRtjinja2.utilsRt
markupsafeRtstringRRStsetR`RaRgRiRjtwarningstfilterwarningstDeprecationWarningRt_mutable_set_typestdictt_mutable_mapping_typestlistt_mutable_sequence_typesRRRtImportErrortsetsRRRRR�RnR3RQRVRZRmRqRrR�t_stringR�tobjectR�R�R�(((s2/usr/lib/python2.7/site-packages/jinja2/sandbox.pyt<module>s�









	
	
	
	























	
		
	$	�