U
    ÓZj:  ã                   @   s˜   d dl Z d dlZd dlZd dlmZ d dlmZ d dlmZ d dlm	Z	 ddl
mZ G dd	„ d	eƒZd
d„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ ZdS )é    N)Údatetime)Úurlparse)Úurlopen)Úcryptoé   )Úloggerc                   @   s   e Zd ZdS )ÚVerificationErrorN)Ú__name__Ú
__module__Ú__qualname__© r   r   úU/var/www/html/TRUCKING_PROJECT/venv/lib/python3.8/site-packages/flask_ask/verifier.pyr      s    r   c                 C   s>   t | ƒstdƒ‚t| ƒ ¡ }t tj|¡}t|ƒs:tdƒ‚|S )Nz#Certificate URL verification failedzCertificate verification failed)Ú_valid_certificate_urlr   r   Úreadr   Úload_certificateZFILETYPE_PEMÚ_valid_certificate)Úcert_urlZ	cert_dataÚcertr   r   r   r      s    r   c              
   C   sP   zt  |¡}t | ||d¡ W n, tjk
rJ } zt|ƒ‚W 5 d }~X Y nX d S )NÚsha1)Úbase64Ú	b64decoder   ÚverifyÚErrorr   )r   Ú	signatureZsigned_dataÚer   r   r   Úverify_signature   s
    
r   c                 C   s0   t  ¡ | jd d� }t| ¡ ƒdkr,tdƒ‚d S )N)Útzinfoé–   zTimestamp verification failed)r   ÚutcnowÚreplaceÚabsÚtotal_secondsr   )Ú	timestampÚdtr   r   r   Úverify_timestamp"   s    r$   c                 C   s   | |krt dƒ‚d S )Nz"Application ID verification failed)r   )Ú	candidateÚrecordsr   r   r   Úverify_application_id(   s    r'   c                 C   s6   t | ƒ}|jdkr2|jdkr2t |j¡ d¡r2dS dS )NÚhttpszs3.amazonaws.comz
/echo.api/TF)r   ÚschemeÚhostnameÚ	posixpathÚnormpathÚpathÚ
startswith)r   Ú
parsed_urlr   r   r   r   -   s    

r   c                 C   s†   |   ¡  d¡}t |d¡}t ¡ |kr*dS d}td|  ¡ ƒD ]<}|  |¡}| ¡  d¡}t	|ƒ}d|kr<d|kr<d} qzq<|s‚dS dS )Nzutf-8z%Y%m%d%H%M%SZFr   ÚsubjectAltNamezDNS:echo-api.amazon.comT)
Zget_notAfterÚdecoder   Ústrptimer   ÚrangeZget_extension_countÚget_extensionZget_short_nameÚstr)r   Z	not_afterÚfoundÚiÚ	extensionZ
short_nameÚvaluer   r   r   r   6   s    
r   )Úosr   r+   r   Zsix.moves.urllib.parser   Zsix.moves.urllib.requestr   ZOpenSSLr   Ú r   Ú	Exceptionr   r   r   r$   r'   r   r   r   r   r   r   Ú<module>   s   
	