o
    ABi f                     @   sl  d dl Z d dlZd dlZd dlZd dlZd dlZ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 d dlmZ d dlmZ ejjZd	Zd
d Zdd Zdd ZeejejfZdd Zdd Z e!dg dZ"dd Z#												d(ddZ$dZ%dZ&e&ddddddddddddfddZ'd d! Z(efd"d#Z)d$d% Z*d&d' Z+dS ))    N)
exceptions)requests)_helpers)_DEFAULT_UNIVERSE_DOMAIN)_NOW)_UTC)DEFAULT_RETRYz[https://googleapis.dev/python/google-api-core/latest/auth.html#setting-up-a-service-accountc                 C   s(   t | tjjjstdt| tdS )ai  Raise AttributeError if the credentials are unsigned.

    :type credentials: :class:`google.auth.credentials.Signing`
    :param credentials: The credentials used to create a private key
                        for signing text.

    :raises: :exc:`AttributeError` if credentials is not an instance
            of :class:`google.auth.credentials.Signing`.
    zyou need a private key to sign credentials.the credentials you are currently using {} just contains a token. see {} for more details.N)	
isinstancegoogleauthcredentialsSigningAttributeErrorformattypeSERVICE_ACCOUNT_URL)r    r   ]/var/www/html/Trade-python/venv/lib/python3.10/site-packages/google/cloud/storage/_signing.pyensure_signed_credentials/   s   
r   c                 C   s4   t |  | |d}t|}| j}|||dS )a  Gets query parameters for creating a signed URL.

    :type credentials: :class:`google.auth.credentials.Signing`
    :param credentials: The credentials used to create a private key
                        for signing text.

    :type expiration: int or long
    :param expiration: When the signed URL should expire.

    :type string_to_sign: str
    :param string_to_sign: The string to be signed by the credentials.

    :raises: :exc:`AttributeError` if credentials is not an instance
            of :class:`google.auth.credentials.Signing`.

    :rtype: dict
    :returns: Query parameters matching the signing credentials with a
              signed payload.
    asciiGoogleAccessIdExpires	Signature)r   
sign_bytesencodebase64	b64encodesigner_email)r   
expirationstring_to_signsignature_bytes	signatureservice_account_namer   r   r   get_signed_query_params_v2B   s   
r$   c                 C   sX   t | tjrtt}||  } t | tjrt| }|d } t | ts*tdt	|  | S )a  Convert 'expiration' to a number of seconds in the future.

    :type expiration: Union[Integer, datetime.datetime, datetime.timedelta]
    :param expiration: Point in time when the signed URL should expire. If
                       a ``datetime`` instance is passed without an explicit
                       ``tzinfo`` set,  it will be assumed to be ``UTC``.

    :raises: :exc:`TypeError` when expiration is not a valid type.

    :rtype: int
    :returns: a timestamp as an absolute number of seconds since epoch.
    i@B =Expected an integer timestamp, datetime, or timedelta. Got %s)
r	   datetime	timedeltar   r   r   _microseconds_from_datetimeint	TypeErrorr   )r   nowmicrosr   r   r   get_expiration_seconds_v2a   s   

r-   c                 C   s   t | tstdt|  tt}t | tr| }t | tjr.| jdu r*| j	t
jd} | | } t | tjr:t|  }|tkrEtdt |S )aV  Convert 'expiration' to a number of seconds offset from the current time.

    :type expiration: Union[Integer, datetime.datetime, datetime.timedelta]
    :param expiration: Point in time when the signed URL should expire. If
                       a ``datetime`` instance is passed without an explicit
                       ``tzinfo`` set,  it will be assumed to be ``UTC``.

    :raises: :exc:`TypeError` when expiration is not a valid type.
    :raises: :exc:`ValueError` when expiration is too large.
    :rtype: Integer
    :returns: seconds in the future when the signed URL will expire
    r%   Ntzinfoz.Max allowed expiration interval is seven days )r	   _EXPIRATION_TYPESr*   r   r   r   r)   r&   r/   replacer   UTCr'   total_seconds
SEVEN_DAYS
ValueError)r   r+   secondsr   r   r   get_expiration_seconds_v4   s$   


r7   c                 C   s   | du rg } nt | trt|  } | sg g fS tt}| D ]\}}|  }d|	 }|| 
| qtdd | D }dd |D }||fS )am  Canonicalize headers for signing.

    See:
    https://cloud.google.com/storage/docs/access-control/signed-urls#about-canonical-extension-headers

    :type headers: Union[dict|List(Tuple(str,str))]
    :param headers:
        (Optional) Additional HTTP headers to be included as part of the
        signed URLs.  See:
        https://cloud.google.com/storage/docs/xml-api/reference-headers
        Requests using the signed URL *must* pass the specified header
        (name and value) with each request for the URL.

    :rtype: str
    :returns: List of headers, normalized / sortted per the URL refernced above.
    N c                 s   s"    | ]\}}|d  |fV  qdS ),N)join).0keyvalr   r   r   	<genexpr>   s     z(get_canonical_headers.<locals>.<genexpr>c                 S   s   g | ]}d j | qS )z{}:{})r   )r;   itemr   r   r   
<listcomp>   s    z)get_canonical_headers.<locals>.<listcomp>)r	   dictlistitemscollectionsdefaultdictlowerstripr:   splitappendsorted)headers
normalizedr<   r=   ordered_headerscanonical_headersr   r   r   get_canonical_headers   s   

rO   
_Canonical)methodresourcequery_parametersrK   c                 C   sv   t |\}}| dkrd} |d |du rt| |g |S tdd | D }tj|}| d| }t| |||S )ah  Canonicalize method, resource per the V2 spec.

    :type method: str
    :param method: The HTTP verb that will be used when requesting the URL.
                   Defaults to ``'GET'``. If method is ``'RESUMABLE'`` then the
                   signature will additionally contain the `x-goog-resumable`
                   header, and the method changed to POST. See the signed URL
                   docs regarding this flow:
                   https://cloud.google.com/storage/docs/access-control/signed-urls

    :type resource: str
    :param resource: A pointer to a specific resource
                     (typically, ``/bucket-name/path/to/blob.txt``).

    :type query_parameters: dict
    :param query_parameters:
        (Optional) Additional query parameters to be included as part of the
        signed URLs.  See:
        https://cloud.google.com/storage/docs/xml-api/reference-headers#query

    :type headers: Union[dict|List(Tuple(str,str))]
    :param headers:
        (Optional) Additional HTTP headers to be included as part of the
        signed URLs.  See:
        https://cloud.google.com/storage/docs/xml-api/reference-headers
        Requests using the signed URL *must* pass the specified header
        (name and value) with each request for the URL.

    :rtype: :class:_Canonical
    :returns: Canonical method, resource, query_parameters, and headers.
    	RESUMABLEPOSTzx-goog-resumable:startNc                 s   s,    | ]\}}|  |r| pd fV  qdS ) N)rF   rG   r;   r<   valuer   r   r   r>      s
    
z"canonicalize_v2.<locals>.<genexpr>?)rO   rI   rP   rJ   rC   urllibparse	urlencode)rQ   rR   rS   rK   _normalized_qp
encoded_qpcanonical_resourcer   r   r   canonicalize_v2   s    
ra   rV   GETc                 C   s   t |}t||||
}|j|pd|pdt|g}||j ||j d|}|r;|r;t	||||}|||d}nt
| ||}|durI||d< |durQ||d< |	durY|	|d< ||j t| }dj||tj|d	S )
a  Generate a V2 signed URL to provide query-string auth'n to a resource.

    .. note::

        Assumes ``credentials`` implements the
        :class:`google.auth.credentials.Signing` interface. Also assumes
        ``credentials`` has a ``signer_email`` property which
        identifies the credentials.

    .. note::

        If you are on Google Compute Engine, you can't generate a signed URL.
        If you'd like to be able to generate a signed URL from GCE, you can use a
        standard service account from a JSON file rather than a GCE service account.

    See headers [reference](https://cloud.google.com/storage/docs/reference-headers)
    for more details on optional arguments.

    :type credentials: :class:`google.auth.credentials.Signing`
    :param credentials: Credentials object with an associated private key to
                        sign text.

    :type resource: str
    :param resource: A pointer to a specific resource
                     (typically, ``/bucket-name/path/to/blob.txt``).
                     Caller should have already URL-encoded the value.

    :type expiration: Union[Integer, datetime.datetime, datetime.timedelta]
    :param expiration: Point in time when the signed URL should expire. If
                       a ``datetime`` instance is passed without an explicit
                       ``tzinfo`` set,  it will be assumed to be ``UTC``.

    :type api_access_endpoint: str
    :param api_access_endpoint: (Optional) URI base. Defaults to empty string.

    :type method: str
    :param method: The HTTP verb that will be used when requesting the URL.
                   Defaults to ``'GET'``. If method is ``'RESUMABLE'`` then the
                   signature will additionally contain the `x-goog-resumable`
                   header, and the method changed to POST. See the signed URL
                   docs regarding this flow:
                   https://cloud.google.com/storage/docs/access-control/signed-urls


    :type content_md5: str
    :param content_md5: (Optional) The MD5 hash of the object referenced by
                        ``resource``.

    :type content_type: str
    :param content_type: (Optional) The content type of the object referenced
                         by ``resource``.

    :type response_type: str
    :param response_type: (Optional) Content type of responses to requests for
                          the signed URL. Ignored if content_type is set on
                          object/blob metadata.

    :type response_disposition: str
    :param response_disposition: (Optional) Content disposition of responses to
                                 requests for the signed URL.

    :type generation: str
    :param generation: (Optional) A value that indicates which generation of
                       the resource to fetch.

    :type headers: Union[dict|List(Tuple(str,str))]
    :param headers:
        (Optional) Additional HTTP headers to be included as part of the
        signed URLs.  See:
        https://cloud.google.com/storage/docs/xml-api/reference-headers
        Requests using the signed URL *must* pass the specified header
        (name and value) with each request for the URL.

    :type service_account_email: str
    :param service_account_email: (Optional) E-mail address of the service account.

    :type access_token: str
    :param access_token: (Optional) Access token for a service account.

    :type query_parameters: dict
    :param query_parameters:
        (Optional) Additional query parameters to be included as part of the
        signed URLs.  See:
        https://cloud.google.com/storage/docs/xml-api/reference-headers#query

    :raises: :exc:`TypeError` when expiration is not a valid type.
    :raises: :exc:`AttributeError` if credentials is not an instance
            of :class:`google.auth.credentials.Signing`.

    :rtype: str
    :returns: A signed URL you can use to access the resource
              until expiration.
    rV   
r   Nresponse-content-typeresponse-content-disposition
generationz"{endpoint}{resource}?{querystring})endpointrR   querystring)r-   ra   rQ   strextendrK   rI   rR   r:   _sign_messager$   updaterS   rJ   rC   r   rZ   r[   r\   )r   rR   r   api_access_endpointrQ   content_md5content_typeresponse_typeresponse_dispositionrf   rK   rS   service_account_emailaccess_tokenuniverse_domainexpiration_stamp	canonicalelements_to_signr    r"   signed_query_paramssorted_signed_query_paramsr   r   r   generate_signed_url_v2  sD   n

rz   i:	 zhttps://storage.googleapis.comc           %      C   s@  t |}|du rt \}}n|}|dd }|}|r|s#t|  | j}| d}| d| }|
du r5i }
|dur=||
d< |durE||
d< dd |
D }d	|vrYtj|j|
d
< | dkred}d|
d< t	|
\}}d
|d }d
dd |D }|du ri }n	dd | D }d|d< ||d< ||d< ||d< ||d< |dur||d< |dur||d< |	dur|	|d< t|}t|}d|v r|d }nd}||||||g}d
|}t|d } d||| g}!d
|!}"|r|rt|"|||}#t|#}$t|$d}#n| |"d}$t|$d}#d ||||#S )!a/  Generate a V4 signed URL to provide query-string auth'n to a resource.

    .. note::

        Assumes ``credentials`` implements the
        :class:`google.auth.credentials.Signing` interface. Also assumes
        ``credentials`` has a ``signer_email`` property which
        identifies the credentials.

    .. note::

        If you are on Google Compute Engine, you can't generate a signed URL.
        If you'd like to be able to generate a signed URL from GCE,you can use a
        standard service account from a JSON file rather than a GCE service account.

    See headers [reference](https://cloud.google.com/storage/docs/reference-headers)
    for more details on optional arguments.

    :type credentials: :class:`google.auth.credentials.Signing`
    :param credentials: Credentials object with an associated private key to
                        sign text. That credentials must provide signer_email
                        only if service_account_email and access_token are not
                        passed.

    :type resource: str
    :param resource: A pointer to a specific resource
                     (typically, ``/bucket-name/path/to/blob.txt``).
                     Caller should have already URL-encoded the value.

    :type expiration: Union[Integer, datetime.datetime, datetime.timedelta]
    :param expiration: Point in time when the signed URL should expire. If
                       a ``datetime`` instance is passed without an explicit
                       ``tzinfo`` set,  it will be assumed to be ``UTC``.

    :type api_access_endpoint: str
    :param api_access_endpoint: URI base. Defaults to
                                "https://storage.googleapis.com/"

    :type method: str
    :param method: The HTTP verb that will be used when requesting the URL.
                   Defaults to ``'GET'``. If method is ``'RESUMABLE'`` then the
                   signature will additionally contain the `x-goog-resumable`
                   header, and the method changed to POST. See the signed URL
                   docs regarding this flow:
                   https://cloud.google.com/storage/docs/access-control/signed-urls


    :type content_md5: str
    :param content_md5: (Optional) The MD5 hash of the object referenced by
                        ``resource``.

    :type content_type: str
    :param content_type: (Optional) The content type of the object referenced
                         by ``resource``.

    :type response_type: str
    :param response_type: (Optional) Content type of responses to requests for
                          the signed URL. Ignored if content_type is set on
                          object/blob metadata.

    :type response_disposition: str
    :param response_disposition: (Optional) Content disposition of responses to
                                 requests for the signed URL.

    :type generation: str
    :param generation: (Optional) A value that indicates which generation of
                       the resource to fetch.

    :type headers: dict
    :param headers:
        (Optional) Additional HTTP headers to be included as part of the
        signed URLs.  See:
        https://cloud.google.com/storage/docs/xml-api/reference-headers
        Requests using the signed URL *must* pass the specified header
        (name and value) with each request for the URL.

    :type query_parameters: dict
    :param query_parameters:
        (Optional) Additional query parameters to be included as part of the
        signed URLs.  See:
        https://cloud.google.com/storage/docs/xml-api/reference-headers#query

    :type service_account_email: str
    :param service_account_email: (Optional) E-mail address of the service account.

    :type access_token: str
    :param access_token: (Optional) Access token for a service account.

    :raises: :exc:`TypeError` when expiration is not a valid type.
    :raises: :exc:`AttributeError` if credentials is not an instance
            of :class:`google.auth.credentials.Signing`.

    :rtype: str
    :returns: A signed URL you can use to access the resource
              until expiration.
    N   z/auto/storage/goog4_request/zContent-TypezContent-MD5c                 S   s   g | ]}|  qS r   )rF   )r;   r<   r   r   r   r@   6      z*generate_signed_url_v4.<locals>.<listcomp>hostHostrT   rU   startzx-goog-resumablerc   ;c                 S   s   g | ]\}}|qS r   r   )r;   r<   r]   r   r   r   r@   B  r}   c                 S   s   i | ]	\}}||p
d qS )rV   r   rW   r   r   r   
<dictcomp>G  s    z*generate_signed_url_v4.<locals>.<dictcomp>zGOOG4-RSA-SHA256zX-Goog-AlgorithmzX-Goog-CredentialzX-Goog-DatezX-Goog-ExpireszX-Goog-SignedHeadersrd   re   rf   zx-goog-content-sha256zUNSIGNED-PAYLOADr   z{}{}?{}&X-Goog-Signature={})r7   get_v4_now_dtstampsr   r   rZ   r[   urlparsenetlocupperrO   r:   rC   _url_encoderA   hashlibsha256r   	hexdigestrk   r   	b64decodebinasciihexlifydecoder   r   )%r   rR   r   rm   rQ   rn   ro   rp   rq   rf   rK   rS   rr   rs   rt   _request_timestampexpiration_secondsrequest_timestamp	datestampclient_emailcredential_scope
credentialheader_namesrN   rM   canonical_header_stringsigned_headerscanonical_query_stringlowercased_headerspayloadcanonical_elementscanonical_requestcanonical_request_hashstring_elementsr    r"   r!   r   r   r   generate_signed_url_v4  s   r




r   c                  C   s0   t tjdd} | d}|  d}||fS )z~Get current timestamp and datestamp in V4 valid format.

    :rtype: str, str
    :returns: Current timestamp, datestamp.
    Nr.   z%Y%m%dT%H%M%SZz%Y%m%d)r   r   r1   strftimedate)r+   	timestampr   r   r   r   r     s   
r   c           	         s   t | } dd| d| dd| ddtdt| d	i t  fd
d}t	}||}| }|j
tjjkrKtd|j t|jd	}|d S )a  Signs a message.

    :type message: str
    :param message: The message to be signed.

    :type access_token: str
    :param access_token: Access token for a service account.


    :type service_account_email: str
    :param service_account_email: E-mail address of the service account.

    :raises: :exc:`TransportError` if an `access_token` is unauthorized.

    :rtype: str
    :returns: The signature of the message.

    rU   zhttps://iamcredentials.z/v1/projects/-/serviceAccounts/z:signBlob?alt=jsonzBearer zapplication/json)AuthorizationzContent-typer   zutf-8c                     s    d} | S )N)urlrQ   bodyrK   r   )responser   rK   rQ   requestr   r   r   retriable_request  s   z(_sign_message.<locals>.retriable_requestz%Error calling the IAM signBytes API: 
signedBlob)r   	_to_bytesjsondumpsr   r   r   r   Requestr   statushttpclientOKr   TransportErrordataloads)	messagers   rr   rt   r   retrycallr   r   r   r   r   rk     s$   

rk   c                 C   s    dd |   D }dt|S )zEncode query params into URL.

    :type query_params: dict
    :param query_params: Query params to be encoded.

    :rtype: str
    :returns: URL encoded query params.
    c                 S   s&   g | ]\}}t | d t | qS )=)_quote_param)r;   namerX   r   r   r   r@     s    z_url_encode.<locals>.<listcomp>&)rC   r:   rJ   )query_paramsparamsr   r   r   r     s   	r   c                 C   s"   t | ts	t| } tjj| ddS )zQuote query param.

    :type param: Any
    :param param: Query param to be encoded.

    :rtype: str
    :returns: URL encoded query param.
    ~)safe)r	   bytesri   rZ   r[   quote)paramr   r   r   r     s   
	r   )rV   rb   NNNNNNNNNN),r   r   rD   r&   r   r   r   rZ   google.auth.credentialsr
   google.authr   google.auth.transportr   google.cloudr   google.cloud.storage._helpersr   r   r   google.cloud.storage.retryr   utcnowNOWr   r   r$   r-   r)   r'   r0   r7   rO   
namedtuplerP   ra   rz   r4   DEFAULT_ENDPOINTr   r   rk   r   r   r   r   r   r   <module>   s   &%6
 !
 ^
5