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a g�h � @ s� d dl Z d dlmZ ddlmZ ddlmZ ddlmZ ddlmZ ddlmZ dd lm Z dd l m Z dd l m Z dd l m Z dd lmZ ddlmZ G dd� de�ZG dd� de�ZdS )� N)�datetime� )� text_type)� base64_decode)� base64_encode)� bytes_to_int)� int_to_bytes)� want_bytes)� BadSignature)�BadTimeSignature)�SignatureExpired)� Serializer)�Signerc @ s< e Zd ZdZdd� Zdd� Zdd� Zdd d �Zdd d �ZdS )�TimestampSignerz�Works like the regular :class:`.Signer` but also records the time of the signing and can be used to expire signatures. The :meth:`unsign` method can raise :exc:`.SignatureExpired` if the unsigning failed because the signature is expired. c C s t t�� �S )zTReturns the current timestamp. The function must return an integer. )�int�time)�self� r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/itsdangerous/timed.py� get_timestamp s z TimestampSigner.get_timestampc C s t �|�S )zaUsed to convert the timestamp from :meth:`get_timestamp` into a datetime object. )r �utcfromtimestamp)r �tsr r r �timestamp_to_datetime s z%TimestampSigner.timestamp_to_datetimec C s@ t |�}tt| �� ��}t | j�}|| | }|| | �|� S )z:Signs the given string and also attaches time information.)r r r r �sepZ get_signature)r �value� timestampr r r r �sign$ s zTimestampSigner.signNFc C s( zt �| |�}d}W n2 tyF } z|}|jp0d}W Y d}~n d}~0 0 t| j�}||vrn|rb|�td|d��|�|d�\}}ztt |��}W n t y� d}Y n0 |dur�tt |�||d��|du r�td|d��|du�r| � � | } | |k�rt d| |f || �|�d��|�r$|| �|�fS |S ) a= Works like the regular :meth:`.Signer.unsign` but can also validate the time. See the base docstring of the class for the general behavior. If ``return_timestamp`` is ``True`` the timestamp of the signature will be returned as a naive :class:`datetime.datetime` object in UTC. N� ztimestamp missing)�payloadr )r Z date_signedzMalformed timestampz Signature age %s > %s seconds)r �unsignr r r r r �rsplitr r � Exceptionr r r r ) r r �max_age�return_timestamp�resultZ sig_error�er r Zager r r r , sB � �zTimestampSigner.unsignc C s. z| j ||d� W dS ty( Y dS 0 dS )zeOnly validates the given signed value. Returns ``True`` if the signature exists and is valid.)r" TFN)r r )r Z signed_valuer" r r r �validatee s zTimestampSigner.validate)NF)N) �__name__� __module__� __qualname__�__doc__r r r r r& r r r r r s 9r c @ s( e Zd ZdZeZddd�Zd dd�ZdS ) �TimedSerializerzOUses :class:`TimestampSigner` instead of the default :class:`.Signer`. NFc C s� t |�}d}| �|�D ]z}z:|j||dd�\}}| �|�} |rL| |fW S | W S tyh � Y q ty� } z| }W Y d} ~ qd} ~ 0 0 q|�dS )a� Reverse of :meth:`dumps`, raises :exc:`.BadSignature` if the signature validation fails. If a ``max_age`` is provided it will ensure the signature is not older than that time in seconds. In case the signature is outdated, :exc:`.SignatureExpired` is raised. All arguments are forwarded to the signer's :meth:`~TimestampSigner.unsign` method. NT)r# )r Ziter_unsignersr Z load_payloadr r ) r �sr" r# �saltZlast_exception�signerZbase64dr r �errr r r �loadsv s zTimedSerializer.loadsc C s d|i}i }| � ||||�S )Nr" )Z_loads_unsafe_impl)r r, r" r- Z load_kwargsZload_payload_kwargsr r r � loads_unsafe� s z TimedSerializer.loads_unsafe)NFN)NN)r' r( r) r* r Zdefault_signerr0 r1 r r r r r+ o s r+ )r r �_compatr �encodingr r r r r �excr r r � serializerr r. r r r+ r r r r �<module> s ^
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