o
    9_Wcb                     @   s   d dl Z d dlmZ d dlmZmZmZmZmZm	Z	 d dl
mZmZmZmZmZ d dlmZ d dlmZ G dd deZG d	d
 d
eZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZeeeeeeedZdS )    N)BytesIO)SIGNED_HEADERS_BLACKLIST"STREAMING_UNSIGNED_PAYLOAD_TRAILERUNSIGNED_PAYLOAD
BaseSigner_get_body_as_dict_host_from_url)HTTPHeadersawscrtparse_qsurlsplit
urlunsplit)NoCredentialsError)percent_encode_sequencec                   @   z   e Zd ZdZg dZejjjZ	dZ
dZdd Zdd Zdd Zd	d
 Zdd Zdd Zdd Zdd Zdd Zdd ZdS )CrtSigV4AuthTAuthorizationz
X-Amz-DateX-Amz-Content-SHA256zX-Amz-Security-Tokenc                 C      || _ || _|| _d | _d S Ncredentials_service_name_region_name_expiration_in_secondsselfr   service_nameregion_name r    3D:\Flask\env\Lib\site-packages\botocore/crt/auth.py__init__*      
zCrtSigV4Auth.__init__c                 C   0   |j di }|d}t|to|ddkS Nchecksumrequest_algorithmintrailercontextget
isinstancedictr   requestchecksum_context	algorithmr    r    r!   _is_streaming_checksum_payload0      
z+CrtSigV4Auth._is_streaming_checksum_payloadc           
      C     | j d u rt tj jtjjd}| |}| | t	j
jj| j j| j j| j jd}| |r5t}n| |rB|r?|}nd }nt}| |rOt	j
jj}nt	j
jj}t	j
jt	j
jj| j|| j| j|| j| j| j ||| j!d}| "|}t	j
#||}	|	$  | %|| d S N)tzinfo)Zaccess_key_idZsecret_access_keyZsession_token)r2   Zsignature_typecredentials_providerregionZservicedateZshould_sign_headerZuse_double_uri_encodeZshould_normalize_uri_pathZsigned_body_valueZsigned_body_header_typeZexpiration_in_seconds)&r   r   datetimeutcnowreplacetimezoneutc_get_existing_sha256_modify_request_before_signingr
   authAwsCredentialsProvider
new_static
access_key
secret_keytokenr3   r   _should_sha256_sign_payloadr   !_should_add_content_sha256_headerAwsSignedBodyHeaderTypeX_AMZ_CONTENT_SHA_256NONEAwsSigningConfigAwsSigningAlgorithmZV4_SIGNATURE_TYPEr   r   _should_sign_header_USE_DOUBLE_URI_ENCODE_SHOULD_NORMALIZE_URI_PATHr   _crt_request_from_aws_requestaws_sign_requestresult_apply_signing_changes
r   r0   Zdatetime_nowZexisting_sha256r8   explicit_payloadZbody_headerZsigning_configcrt_requestfuturer    r    r!   add_auth5   R   








zCrtSigV4Auth.add_authc           
      C      t |j}|jr|jnd}|jr4g }|j D ]\}}t|}|| d|  q|d d| }n|jr?| d|j }t	j
|j }d }|jr\t|jdrW|j}nt|j}t	j
j|j|||d}	|	S N/=?&seek)methodpathheadersZbody_streamr   urlre   paramsitemsstrappendjoinqueryr
   httpZHttpHeadersrf   bodyhasattrr   ZHttpRequestrd   
r   aws_request	url_partsZcrt_patharrayparamvalueZcrt_headersZcrt_body_streamrY   r    r    r!   rS   n   .   

z*CrtSigV4Auth._crt_request_from_aws_requestc                 C      t t|j|_d S r   r	   Z
from_pairslistrf   r   rs   signed_crt_requestr    r    r!   rV         
z#CrtSigV4Auth._apply_signing_changesc                 K      |  tvS r   lowerr   r   namekwargsr    r    r!   rP         z CrtSigV4Auth._should_sign_headerc                 C   @   | j D ]}||jv r|j|= qd|jvrt|j|jd< d S d S Nhost_PRESIGNED_HEADERS_BLOCKLISTrf   r   rh   r   r0   hr    r    r!   rA         


z+CrtSigV4Auth._modify_request_before_signingc                 C      |j dS Nr   rf   r,   r   r0   r    r    r!   r@      r   z!CrtSigV4Auth._get_existing_sha256c                 C      |j dsdS |jddS NhttpsTpayload_signing_enabledrh   
startswithr+   r,   r   r    r    r!   rH         z(CrtSigV4Auth._should_sha256_sign_payloadc                 C      |d uS r   r    r   rX   r    r    r!   rI         z.CrtSigV4Auth._should_add_content_sha256_headerN)__name__
__module____qualname__REQUIRES_REGIONr   r
   rB   AwsSignatureTypeHTTP_REQUEST_HEADERSrO   rQ   rR   r"   r3   r[   rS   rV   rP   rA   r@   rH   rI   r    r    r    r!   r      s     
9

r   c                       4   e Zd ZdZdZdd Z fddZdd Z  ZS )CrtS3SigV4AuthFc                 C      d S r   r    r   r    r    r!   r@         z#CrtS3SigV4Auth._get_existing_sha256c                    s   |j d}t|dd }|d u ri }|dd }|d ur|S d}|j di }|d}t|tr<|ddkr<|d	 }|jd
rG||jvrIdS |j ddrRdS t 	|S )Nclient_configs3r   Content-MD5r&   r'   r(   headerr   r   Thas_streaming_inputF)
r+   r,   getattrr-   r.   rh   r   rf   superrH   )r   r0   r   	s3_configsign_payloadZchecksum_headerr1   r2   	__class__r    r!   rH      s(   

z*CrtS3SigV4Auth._should_sha256_sign_payloadc                 C      dS NTr    r   r    r    r!   rI      r   z0CrtS3SigV4Auth._should_add_content_sha256_header	r   r   r   rQ   rR   r@   rH   rI   __classcell__r    r    r   r!   r      s    )r   c                   @   r   )CrtSigV4AsymAuthTr   c                 C   r   r   r   r   r    r    r!   r"      r#   zCrtSigV4AsymAuth.__init__c           
      C   r5   r6   )&r   r   r;   r<   r=   r>   r?   r@   rA   r
   rB   rC   rD   rE   rF   rG   r3   r   rH   r   rI   rJ   rK   rL   rM   rN   ZV4_ASYMMETRICrO   r   r   rP   rQ   rR   r   rS   rT   rU   rV   rW   r    r    r!   r[      r\   zCrtSigV4AsymAuth.add_authc           
      C   r]   r^   rg   rr   r    r    r!   rS   3  rx   z.CrtSigV4AsymAuth._crt_request_from_aws_requestc                 C   ry   r   rz   r|   r    r    r!   rV   Q  r~   z'CrtSigV4AsymAuth._apply_signing_changesc                 K   r   r   r   r   r    r    r!   rP   W  r   z$CrtSigV4AsymAuth._should_sign_headerc                 C   r   r   r   r   r    r    r!   rA   Z  r   z/CrtSigV4AsymAuth._modify_request_before_signingc                 C   r   r   r   r   r    r    r!   r@   d  r   z%CrtSigV4AsymAuth._get_existing_sha256c                 C   r$   r%   r*   r/   r    r    r!   r3   g  r4   z/CrtSigV4AsymAuth._is_streaming_checksum_payloadc                 C   r   r   r   r   r    r    r!   rH   l  r   z,CrtSigV4AsymAuth._should_sha256_sign_payloadc                 C   r   r   r    r   r    r    r!   rI   v  r   z2CrtSigV4AsymAuth._should_add_content_sha256_headerN)r   r   r   r   r   r
   rB   r   r   rO   rQ   rR   r"   r[   rS   rV   rP   rA   r@   r3   rH   rI   r    r    r    r!   r      s     
9

r   c                       r   )CrtS3SigV4AsymAuthFc                 C   r   r   r    r   r    r    r!   r@     r   z'CrtS3SigV4AsymAuth._get_existing_sha256c                    st   |j d}t|dd }|d u ri }|dd }|d ur|S |jdr)d|jvr+dS |j ddr4dS t |S )	Nr   r   r   r   r   Tr   F)r+   r,   r   rh   r   rf   r   rH   )r   r0   r   r   r   r   r    r!   rH     s   
z.CrtS3SigV4AsymAuth._should_sha256_sign_payloadc                 C   r   r   r    r   r    r    r!   rI     r   z4CrtS3SigV4AsymAuth._should_add_content_sha256_headerr   r    r    r   r!   r   {  s    $r   c                       F   e Zd ZdZejjjZef fdd	Z	 fddZ
 fddZ  ZS )CrtSigV4AsymQueryAuth  c                       t  ||| || _d S r   r   r"   r   r   r   r   r   expiresr   r    r!   r"        
zCrtSigV4AsymQueryAuth.__init__c           	         s   t  | |jd}|dkr|jd= t|j}t|jdd}dd | D }|j	r6|
t| d|_	t|}|}|d |d	 |d
 ||d f}t||_d S )Ncontent-type0application/x-www-form-urlencoded; charset=utf-8Tkeep_blank_valuesc                 S      i | ]	\}}||d  qS r   r    .0kvr    r    r!   
<dictcomp>  s    zHCrtSigV4AsymQueryAuth._modify_request_before_signing.<locals>.<dictcomp> r            )r   rA   rf   r,   r   rh   r   rn   rj   dataupdater   r   r   )	r   r0   content_typert   Zquery_string_parts
query_dictnew_query_stringpnew_url_partsr   r    r!   rA     s   
	z4CrtSigV4AsymQueryAuth._modify_request_before_signingc                    L   t  || t|jj}t|j}t|d |d |d ||d f|_d S Nr   r   r   r   r   rV   r   re   rn   rh   r   r   rs   r}   Zsigned_queryr   r   r    r!   rV        
(	z,CrtSigV4AsymQueryAuth._apply_signing_changesr   r   r   ZDEFAULT_EXPIRESr
   rB   r   ZHTTP_REQUEST_QUERY_PARAMSrO   r"   rA   rV   r   r    r    r   r!   r     s    
*r   c                   @   (   e Zd ZdZdZdZdd Zdd ZdS )CrtS3SigV4AsymQueryAuthzS3 SigV4A auth using query parameters.
    This signer will sign a request using query parameters and signature
    version 4A, i.e a "presigned url" signer.
    Fc                 C   r   NFr    r   r    r    r!   rH        z3CrtS3SigV4AsymQueryAuth._should_sha256_sign_payloadc                 C   r   r   r    r   r    r    r!   rI     r   z9CrtS3SigV4AsymQueryAuth._should_add_content_sha256_headerNr   r   r   __doc__rQ   rR   rH   rI   r    r    r    r!   r     s    r   c                       r   )CrtSigV4QueryAuthr   c                    r   r   r   r   r   r    r!   r"     r   zCrtSigV4QueryAuth.__init__c                    s   t  | |jd}|dkr|jd= t|j}dd t|jdd D }|j	r3|
|j	 i |_	|jr@|
t| d|_t|}|}|d |d	 |d
 ||d f}t||_d S )Nr   r   c                 S   r   r   r    r   r    r    r!   r   !  s    zDCrtSigV4QueryAuth._modify_request_before_signing.<locals>.<dictcomp>Tr   r   r   r   r   r   )r   rA   rf   r,   r   rh   r   rn   rj   ri   r   r   r   r   r   )r   r0   r   rt   r   r   r   r   r   r    r!   rA     s*   
	z0CrtSigV4QueryAuth._modify_request_before_signingc                    r   r   r   r   r   r    r!   rV   B  r   z(CrtSigV4QueryAuth._apply_signing_changesr   r    r    r   r!   r     s    
0r   c                   @   r   )CrtS3SigV4QueryAutha  S3 SigV4 auth using query parameters.
    This signer will sign a request using query parameters and signature
    version 4, i.e a "presigned url" signer.
    Based off of:
    http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-query-string-auth.html
    Fc                 C   r   r   r    r   r    r    r!   rH   _  r   z/CrtS3SigV4QueryAuth._should_sha256_sign_payloadc                 C   r   r   r    r   r    r    r!   rI   f  r   z5CrtS3SigV4QueryAuth._should_add_content_sha256_headerNr   r    r    r    r!   r   S  s    r   )Zv4zv4-queryZv4aZs3v4z
s3v4-queryZs3v4azs3v4a-query)r;   ior   Zbotocore.authr   r   r   r   r   r   Zbotocore.compatr	   r
   r   r   r   Zbotocore.exceptionsr   Zbotocore.utilsr   r   r   r   r   r   r   r   r   ZCRT_AUTH_TYPE_MAPSr    r    r    r!   <module>   s0     7 2EK
