o )= j f @slddlZddlZddlZddlZddlZddlZddlZddlZddlZ ddl m Z ddl m Z ddlmZddlmZddlmZddlmZddlmZejjZd Zd d Zd d ZddZeejejfZddZddZ e!dgdZ"ddZ#            d(ddZ$dZ%dZ&e&ddddddddddddf ddZ'd d!Z(efd"d#Z)d$d%Z*d&d'Z+dS))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-accountcCs(t|tjjjstdt|tdS)aiRaise 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) isinstancegoogleauth credentialsZSigningAttributeErrorformattypeSERVICE_ACCOUNT_URL)r rgC:\Users\psant\Downloads\Anu Raj Backend\school\venv\Lib\site-packages\google/cloud/storage/_signing.pyensure_signed_credentials/s   rcCs4t|||d}t|}|j}|||dS)aGets 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. asciiZGoogleAccessIdZExpires SignatureN)r sign_bytesencodebase64 b64encode signer_email)r expirationstring_to_signsignature_bytes signatureZservice_account_namerrrget_signed_query_params_v2Bs r cCsXt|tjrtt}||}t|tjrt|}|d}t|ts*tdt ||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 %sN) r datetime timedeltarrrZ_microseconds_from_datetimeint TypeErrorr)rnowmicrosrrrget_expiration_seconds_v2as    r(cCst|ts tdt|tt}t|tr|}t|tjr.|jdur*|j t j d}||}t|tj r:t| }|tkrEtdt|S)aVConvert '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!Ntzinfoz.Max allowed expiration interval is seven days )r _EXPIRATION_TYPESr%rrrr$r"r*replacerUTCr# total_seconds SEVEN_DAYS ValueError)rr&secondsrrrget_expiration_seconds_v4s$      r2cCs|durg}n t|trt|}|sggfStt}|D]\}}|}d| }|| |qt dd|D}dd|D}||fS)amCanonicalize 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 css"|] \}}|d|fVqdS),N)join).0keyvalrrr s z(get_canonical_headers..cSsg|]}dj|qS)z{}:{})r)r6itemrrr sz)get_canonical_headers..) r dictlistitems collections defaultdictlowerstripr5splitappendsorted)headers normalizedr7r8ordered_headerscanonical_headersrrrget_canonical_headerss     rJ _Canonical)methodresourcequery_parametersrFcCsvt|\}}|dkrd}|d|durt||g|Stdd|D}tj|}|d|}t||||S)ahCanonicalize 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. RESUMABLEPOSTzx-goog-resumable:startNcss,|]\}}||r|pdfVqdS)N)rArBr6r7valuerrrr9s  z"canonicalize_v2..?)rJrDrKrEr>urllibparse urlencode)rLrMrNrF_Z normalized_qpZ encoded_qpZcanonical_resourcerrrcanonicalize_v2s   rYrQGETcCst|}t||| | }|j|pd|pdt|g}||j||jd|}| r;| r;t || | |}| ||d}nt |||}|durI||d<|durQ||d<| durY| |d<| |j t |}dj||tj|d S) aGenerate 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. rQ rNresponse-content-typeresponse-content-disposition generationz"{endpoint}{resource}?{querystring})ZendpointrMZ querystring)r(rYrLstrextendrFrDrMr5 _sign_messager updaterNrEr>rrUrVrW)r rMrapi_access_endpointrL content_md5 content_type response_typeresponse_dispositionr^rFrNservice_account_email access_tokenuniverse_domainZexpiration_stamp canonicalZelements_to_signrrZsigned_query_paramsZsorted_signed_query_paramsrrrgenerate_signed_url_v2sDn      rli: zhttps://storage.googleapis.comc%Cs@t|}|durt\}}n|}|dd}| }| r| s#t||j}|d}|d|}| dur5i} |dur=|| d<|durE|| d<dd| D}d |vrYtj|j| d <|d kred }d | d<t | \}}d |d}d dd|D}| duri} n dd| D} d| d<|| d<|| d<|| d<|| d<|dur|| d<|dur|| d<| dur| | d<t | }t |}d|vr|d}nd}||||||g}d |}t|d} d||| g}!d |!}"| r| rt|"| | |}#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. Nz/auto/storage/goog4_request/z Content-Typez Content-MD5cSsg|]}|qSr)rA)r6r7rrrr;6z*generate_signed_url_v4..hostHostrOrPstartzx-goog-resumabler[;cSsg|]\}}|qSrr)r6r7rXrrrr;BrocSsi|] \}}||p dqS)rQrrRrrr Gsz*generate_signed_url_v4..zGOOG4-RSA-SHA256zX-Goog-AlgorithmzX-Goog-Credentialz X-Goog-DatezX-Goog-ExpireszX-Goog-SignedHeadersr\r]r^zx-goog-content-sha256zUNSIGNED-PAYLOADrz{}{}?{}&X-Goog-Signature={})r2get_v4_now_dtstampsrrrUrVurlparsenetlocupperrJr5r> _url_encoder<hashlibsha256r hexdigestrar b64decodebinasciihexlifydecoderr)%r rMrrcrLrdrerfrgr^rFrNrhrirjZ_request_timestampZexpiration_secondsZrequest_timestamp datestampZ client_emailZcredential_scopeZ credential header_namesrIrHZcanonical_header_stringZsigned_headersZcanonical_query_stringZlowercased_headerspayloadZcanonical_elementsZcanonical_requestZcanonical_request_hashZstring_elementsrrrrrrgenerate_signed_url_v4sr           rcCs0ttjdd}|d}|d}||fS)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)rrr,strftimedate)r& timestamprrrrrus ruc st|}dd|d|dd|ddtdt|d itfd d }t }||}|}|j t j j krKtd |jt|jd }|d S)aSigns 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. rPzhttps://iamcredentials.z/v1/projects/-/serviceAccounts/z:signBlob?alt=jsonzBearer zapplication/json) Authorizationz Content-typerzutf-8csd}|S)N)urlrLbodyrFr)responserrFrLrequestrrrretriable_requestsz(_sign_message..retriable_requestz%Error calling the IAM signBytes API: Z signedBlobN)r _to_bytesjsondumpsrrrrRequestrstatushttpclientOKrZTransportErrordataloads) messagerirhrjrretrycallrrrrrras$  racCs dd|D}dt|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. cSs&g|]\}}t|dt|qS)=) _quote_param)r6namerSrrrr;sz_url_encode..&N)r>r5rE)Z query_paramsparamsrrrrys rycCs"t|ts t|}tjj|ddS)zQuote query param. :type param: Any :param param: Query param to be encoded. :rtype: str :returns: URL encoded query param. ~)safeN)r bytesr_rUrVquote)paramrrrrs r) rQrZNNNNNNNNNN),rr~r?r"rzrrrUZgoogle.auth.credentialsr Z google.authrZgoogle.auth.transportrZ google.cloudrZgoogle.cloud.storage._helpersrrrZgoogle.cloud.storage.retryrutcnowZNOWrrr r(r$r#r+r2rJ namedtuplerKrYrlr/ZDEFAULT_ENDPOINTrruraryrrrrrs       &%6 ! ^ 5