Current File : //proc/227033/root/opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyo
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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) 2010 by the Jinja Team.
:license: BSD.
i����N( t Environment( t
SecurityError( t string_typest
function_typet method_typet traceback_typet code_typet
frame_typet generator_typet PY2i�� t func_closuret func_codet func_dictt
func_defaultst func_globalst im_classt im_funct im_selft gi_framet gi_codet ignores the sets modulet modules jinja2.sandbox( t deque( t UserDictt DictMixin( t UserList( t Set( t
MutableSett MutableMappingt MutableSequencet addt cleart difference_updatet discardt popt removet symmetric_difference_updatet updatet popitemt
setdefaultt appendt reverset insertt sortt extendt
appendleftt
extendleftt popleftt rotatec G s5 t | � } t | � t k r1 t d t � � n | S( sW A range that can't generate ranges with a length of more than
MAX_RANGE items.
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OverflowError( t argst rng( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt
safe_range` s
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t | _ | S( sn Marks a function or method as unsafe.
::
@unsafe
def delete(self):
pass
( t Truet unsafe_callable( t f( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt unsafek s c C s� t | t � r" | t k r� t Sn� t | t � rP | t k sI | t k r� t Sn` t | t � rr | d k r� t Sn> t | t t t f � r� t St | t
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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(lambda: None, "func_code")
True
>>> is_internal_attribute((lambda x:x).func_code, 'co_code')
True
>>> is_internal_attribute(str, "upper")
False
t mrot __(
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isinstanceR t UNSAFE_FUNCTION_ATTRIBUTESR8 R t UNSAFE_METHOD_ATTRIBUTESt typeR R R R t UNSAFE_GENERATOR_ATTRIBUTESt
startswith( t objt attr( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt is_internal_attributex s c C s4 x- t D]% \ } } t | | � r | | k Sq Wt S( 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_specR> t False( RD RE t typespecR; ( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt modifies_known_mutable� s t SandboxedEnvironmentc B s� e Z d Z e Z i e j d 6e j d 6e j d 6e j d 6e j
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� Z d � Z d � Z d � Z d � Z RS( 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 occour during the rendering so
the caller has to ensure that all exceptions are catched.
t +t -t *t /s //s **t %c C s t S( 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
( RH ( t selft operator( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt intercept_unop� s c O sH t j | | | � t | j d <| j j � | _ | j j � | _ d S( NR1 ( R t __init__R7 t globalst default_binop_tablet copyt binop_tablet default_unop_tablet
unop_table( RQ R5 t kwargs( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyRT s
c C s | j d � p t | | � 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 _( RC RF ( RQ RD RE t value( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt is_safe_attribute s c C s# t | d t � p! t | d t � 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.
R9 t alters_data( t getattrRH ( RQ RD ( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt is_safe_callable s c C s | 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
( RX ( RQ t contextRR t leftt right( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt
call_binop s c C s | 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
( RZ ( RQ Rb RR t arg( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt call_unop' s c C s� y | | SWn� t t f k
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r{ q� X| j | | | � r� | S| j | | � Sq� n X| j
d | d | � S( s( Subscribe an object from sandboxed code.RD t name( t TypeErrort LookupErrorR> R t strt ExceptionR` t AttributeErrorR^ t unsafe_undefinedt undefined( RQ RD t argumentRE R] ( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt getitem0 s
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rH qv Xn* X| j | | | � rf | S| j | | � S| j d | d | � S( s� Subscribe an object from sandboxed code and prefer the
attribute. The attribute passed *must* be a bytestring.
RD Rh ( R` Rm Ri Rj R^ Rn Ro ( RQ RD t attributeR] ( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyR` E s
c C s/ | j d | | j j f d | d | d t �S( s1 Return an undefined object for unsafe attributes.s. access to attribute %r of %r object is unsafe.Rh RD t exc( Ro t __class__t __name__R ( RQ RD Rr ( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyRn V s c O s8 | j | � s% t d | f � � n | j | | | � S( s# Call an object from sandboxed code.s %r is not safely callable( Ra R t call( t _SandboxedEnvironment__selft _SandboxedEnvironment__contextt _SandboxedEnvironment__objR5 R[ ( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyRv ^ s ( Ru t
__module__t __doc__R8 t sandboxedRR R t subt mult truedivt floordivt powt modRV t post negRY t frozensett intercepted_binopst intercepted_unopsRS RT R^ Ra Re Rg Rq R` Rn Rv ( ( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyRK � s2
t ImmutableSandboxedEnvironmentc B s e Z d Z d � Z RS( 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.
c C s* t j | | | | � s t St | | � S( N( RK R^ RH RJ ( RQ RD RE R] ( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyR^ m s ( Ru Rz R{ R^ ( ( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyR� g s (/ R{ RR t jinja2.environmentR t jinja2.exceptionsR t jinja2._compatR R R R R R R R R3 t setR? R@ RB t warningst filterwarningst DeprecationWarningt collectionsR t _mutable_set_typest dictt _mutable_mapping_typest listt _mutable_sequence_typesR R R t ImportErrort setsR R R R R� RG R7 R; RF RJ RK R� ( ( ( s? /opt/alt/python27/lib/python2.7/site-packages/jinja2/sandbox.pyt <module> sj :
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