U
    1CÞgÑ  ã                   @   s8   d dl Z d dlZd dlZddlmZ G dd„ deƒZdS )é    Né   )ÚSignatureVerificationErrorc                   @   sF   e Zd Zddd„Zdd„ Zdd„ Zdd	„ Zd
d„ Zdd„ Zdd„ Z	dS )ÚUtilityNc                 C   s
   || _ d S ©N)Úclient)Úselfr   © r   ú</tmp/pip-unpacked-wheel-7vse0p6g/razorpay/utility/utility.pyÚ__init__
   s    zUtility.__init__c                 C   sN   t |d ƒ}t |d ƒ}t |d ƒ}d ||¡}t | jjd ƒ}|  |||¡S )NZrazorpay_order_idÚrazorpay_payment_idÚrazorpay_signatureú{}|{}é   )ÚstrÚformatr   ÚauthÚverify_signature)r   Ú
parametersZorder_idÚ
payment_idr   ÚmsgÚsecretr   r   r	   Úverify_payment_signature   s    z Utility.verify_payment_signaturec           	      C   s¬   d|  ¡ krbd|  ¡ krbd|  ¡ krbt|d ƒ}t|d ƒ}t|d ƒ}t|d ƒ}t|d ƒ}ndS d ||||¡}d|  ¡ krŽt|d ƒnt| jjd	 ƒ}|  |||¡S )
Nr   Úpayment_link_reference_idÚpayment_link_statusÚpayment_link_idr   Fz{}|{}|{}|{}r   r   )Úkeysr   r   r   r   r   )	r   r   r   r   r   r   r   r   r   r   r   r	   Úverify_payment_link_signature   s    $(z%Utility.verify_payment_link_signaturec                 C   sf   t |d ƒ}t |d ƒ}t |d ƒ}d ||¡}d| ¡ krHt |d ƒnt | jjd ƒ}|  |||¡S )z’
        To consider the payment as successful and subscription as authorized 
        after the signature has been successfully verified
        Zrazorpay_subscription_idr   r   r   r   r   )r   r   r   r   r   r   )r   r   Zsubscription_idr   r   r   r   r   r   r	   Ú%verify_subscription_payment_signature)   s    (z-Utility.verify_subscription_payment_signaturec                 C   s   |   |||¡S r   )r   )r   ÚbodyÚ	signaturer   r   r   r	   Úverify_webhook_signature8   s    z Utility.verify_webhook_signaturec                 C   sx   t jd dkr"t|dƒ}t|dƒ}tj||tjd�}| ¡ }t jdd… dk r\|  ||¡}nt 	||¡}|stt
dƒ‚|S )Nr   é   zutf-8)Úkeyr   Ú	digestmod)r   é   r$   z&Razorpay Signature Verification Failed)ÚsysÚversion_infoÚbytesÚhmacÚnewÚhashlibÚsha256Ú	hexdigestÚcompare_stringÚcompare_digestr   )r   r   r   r"   ÚdigZgenerated_signatureÚresultr   r   r	   r   ;   s     

þÿzUtility.verify_signaturec                 C   sH   t |ƒt |ƒkrdS d}t||ƒD ]\}}|t|ƒt|ƒA O }q"|dkS )aX  
        Returns True if the two strings are equal, False otherwise
        The time taken is independent of the number of characters that match
        For the sake of simplicity, this function executes in constant time only
        when the two strings have the same length. It short-circuits when they
        have different lengths
        Fr   )ÚlenÚzipÚord)r   Zexpected_strZ
actual_strr0   ÚxÚyr   r   r	   r-   S   s    zUtility.compare_string)N)
Ú__name__Ú
__module__Ú__qualname__r
   r   r   r   r    r   r-   r   r   r   r	   r   	   s   
r   )r(   r*   r%   Úerrorsr   Úobjectr   r   r   r   r	   Ú<module>   s   