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The sandbox blocks ranges larger than MAX_RANGE (z).)�range�len� MAX_RANGE� OverflowError)r: �rngr7 r7 r8 � safe_rangea s ��r@ )�fr, c C s d| _ | S )z�Marks a function or method as unsafe. .. code-block: python @unsafe def delete(self): pass T)�unsafe_callable)rA r7 r7 r8 �unsafep s rC )r6 �attrr, c C s� t | tj�r|tv r�dS n�t | tj�r<|tv s6|tv r�dS n�t | t�rT|dkr�dS nzt | tjtjtj f�rndS t | tj �r�|t v r�dS nFt td�r�t | tj �r�|tv r�dS n"t td�r�t | tj�r�|tv r�dS |�d�S )a� 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 T�mro� CoroutineType�AsyncGeneratorType�__)r/ r0 � FunctionTyper r1 r �type�CodeType� TracebackType� FrameType� GeneratorType�UNSAFE_GENERATOR_ATTRIBUTES�hasattrrF �UNSAFE_COROUTINE_ATTRIBUTESrG �!UNSAFE_ASYNC_GENERATOR_ATTRIBUTES� startswith)r6 rD r7 r7 r8 �is_internal_attribute} s. �rT c C s( t D ] \}}t| |�r||v S qdS )a� This function checks if an attribute on a builtin mutable object (list, dict, set or deque) or the corresponding ABCs would modify it if called. >>> 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, ``False`` is returned. >>> modifies_known_mutable("foo", "upper") False F)r* r/ )r6 rD ZtypespecrC r7 r7 r8 �modifies_known_mutable� s rU c s� e Zd ZU dZdZejejejej ej ej ej d�Z ejeejejejgejf f ed< ejejd�Zejeejejgejf f ed< e� Zeje ed< e� Zeje ed< ejejd d �� fd d � Zejeeje d �dd�Z eje d�dd�Z e eejejejd�dd�Z e eejejd�dd�Z!ejej"eejf ej"eje#f d�dd�Z$ejeej"eje#f d �d d �Z%ejee#d �d d �Z&d(eej'ejd!f ejeejf ej(ej ed"�d#d$�Z)e ejejejejd%�d&d'�Z*� Z+S ))�SandboxedEnvironmenta� 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)�+�-�*�/z//z**�%�default_binop_table)rW rX �default_unop_table�intercepted_binops�intercepted_unopsN)r: �kwargsr, c s8 t � j|i |�� t| jd< | j�� | _| j�� | _d S )Nr; ) �super�__init__r@ �globalsr\ �copy� binop_tabler] � unop_table)�selfr: r` �� __class__r7 r8 rb � s z SandboxedEnvironment.__init__�r6 rD �valuer, c C s |� d�pt||� S )aY 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. �_)rS rT �rg r6 rD rk r7 r7 r8 �is_safe_attribute s z&SandboxedEnvironment.is_safe_attribute)r6 r, c C s t |dd�pt |dd� S )z�Check if an object is safely callable. By default callables are considered safe unless decorated with :func:`unsafe`. This also recognizes the Django convention of setting ``func.alters_data = True``. rB FZ alters_data)�getattr)rg r6 r7 r7 r8 �is_safe_callable s �z%SandboxedEnvironment.is_safe_callable)�context�operator�left�rightr, c C s | j | ||�S )z�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 )re )rg rq rr rs rt r7 r7 r8 � call_binop s z SandboxedEnvironment.call_binop)rq rr �argr, c C s | j | |�S )z�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 )rf )rg rq rr rv r7 r7 r8 � call_unop! s z SandboxedEnvironment.call_unop)r6 �argumentr, c C s� z || W S t tfy� t|t�r�z t|�}W n tyD Y nJ0 zt||�}W n tyf Y n(0 | �|||�r~| Y S | �||� Y S Y n0 | j ||d�S )z(Subscribe an object from sandboxed code.�r6 �name) � TypeError� LookupErrorr/ r5 � Exceptionro �AttributeErrorrn �unsafe_undefined� undefined)rg r6 rx rD rk r7 r7 r8 �getitem* s z SandboxedEnvironment.getitem)r6 � attributer, c C st zt ||�}W n8 tyF z|| W Y S ttfy@ Y n0 Y n 0 | �|||�rZ|S | �||�S | j||d�S )z�Subscribe an object from sandboxed code and prefer the attribute. The attribute passed *must* be a bytestring. ry )ro r~ r{ r| rn r r� )rg r6 r� rk r7 r7 r8 ro A s z SandboxedEnvironment.getattrc C s& | j d|�dt|�j�d�||td�S )z1Return an undefined object for unsafe attributes.zaccess to attribute z of z object is unsafe.)rz r6 �exc)r� rJ r3 r )rg r6 r� r7 r7 r8 r R s ��z%SandboxedEnvironment.unsafe_undefined.)�sr: r` � format_funcr, c C s� t |t�rt| |jd�}nt| �}|durl|jdkrlt|�dksD|r`tdt|�|du � d���|d }d}|�|||�}t |�|�S ) z�If a format call is detected, then this is routed through this method so that our safety sandbox can be used for it. )�escapeNr. r z(format_map() takes exactly one argument z givenr r7 ) r/ r �SandboxedEscapeFormatterr� �SandboxedFormatterr3 r< r{ ZvformatrJ )rg r� r: r` r� � formatter�rvr7 r7 r8 � format_string\ s ��z"SandboxedEnvironment.format_string)� _SandboxedEnvironment__context�_SandboxedEnvironment__objr: r` r, c O sP t |�}|dur | �||||�S | �|�s8t|�d���|j|g|�R i |��S )z#Call an object from sandboxed code.Nz is not safely callable)r9 r� rp r �call)Z_SandboxedEnvironment__selfr� r� r: r` �fmtr7 r7 r8 r� y s zSandboxedEnvironment.call)N),r3 � __module__� __qualname__�__doc__Z sandboxedrr r �sub�mul�truediv�floordiv�pow�modr\ �t�Dictr5 �Callable�Any�__annotations__�pos�negr] � frozensetr^ � FrozenSetr_ rb �boolrn rp r ru rw �Unionr r� ro r �Tuple�Optionalr� r� � __classcell__r7 r7 rh r8 rV � sR �,�( � � � � �rV c s0 e Zd ZdZejeejed�� fdd� Z� Z S )� ImmutableSandboxedEnvironmentz�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. rj c s t � �|||�sdS t||� S )NF)ra rn rU rm rh r7 r8 rn � s z/ImmutableSandboxedEnvironment.is_safe_attribute) r3 r� r� r� r� r� r5 r� rn r� r7 r7 rh r8 r� � s r� c s\ e Zd Zeejdd�� fdd� Zeejej ej eejf ej ejef d�dd�Z � Z S )r� N)�envr` r, c s || _ t� jf i |�� d S �N)�_envra rb )rg r� r` rh r7 r8 rb � s zSandboxedFormatter.__init__)� field_namer: r` r, c C sR t |�\}}| �|||�}|D ]*\}}|r:| j�||�}q | j�||�}q ||fS r� )r Z get_valuer� ro r� ) rg r� r: r` �first�restr6 Zis_attr�ir7 r7 r8 � get_field� s z SandboxedFormatter.get_field) r3 r� r� r r� r� rb r5 �Sequence�Mappingr� r� r� r7 r7 rh r8 r� � s �r� c @ s e Zd ZdS )r� N)r3 r� r� r7 r7 r7 r8 r� � s r� )9r� rr r0 �typingr� Z_stringr � collectionsr r �stringr Z markupsafer r Z environmentr � exceptionsr Zruntimer r �TypeVarr� r� r r= �setr �Setr5 r� r rO rQ rR � MutableSetr� �MutableMapping�MutableSequencer* r� �Typer� r� r9 �intr; r@ rC r� rT rU rV r� r� r� r7 r7 r7 r8 �<module> s^ �� � ����(+ % R
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