a !fc @sddlZddlZddlZddlZddlZddlZddlZddlZddlZ ddl m Z ddl m Z ddlmZejjZdZddZdd Zd d ZeejejfZd d ZddZedgdZddZd$ddZdZdZ e dddddddddddf ddZ!ddZ"ddZ#d d!Z$d"d#Z%dS)%N) exceptions)requests)_helpersz[https://googleapis.dev/python/google-api-core/latest/auth.html#setting-up-a-service-accountcCs(t|tjjjs$tdt|tdS)aiRaise AttributeError if the credentials are unsigned. :type credentials: :class:`google.auth.credentials.Signing` :param credentials: The credentials used to create a private key for signing text. :raises: :exc:`AttributeError` if credentials is not an instance of :class:`google.auth.credentials.Signing`. zyou need a private key to sign credentials.the credentials you are currently using {} just contains a token. see {} for more details.N) isinstancegoogleauth credentialsZSigningAttributeErrorformattypeSERVICE_ACCOUNT_URL)rr ^/var/www/html/python-backend/venv/lib/python3.9/site-packages/google/cloud/storage/_signing.pyensure_signed_credentials)s rcCs4t|||d}t|}|j}|||dS)aGets query parameters for creating a signed URL. :type credentials: :class:`google.auth.credentials.Signing` :param credentials: The credentials used to create a private key for signing text. :type expiration: int or long :param expiration: When the signed URL should expire. :type string_to_sign: str :param string_to_sign: The string to be signed by the credentials. :raises: :exc:`AttributeError` if credentials is not an instance of :class:`google.auth.credentials.Signing`. :rtype: dict :returns: Query parameters matching the signing credentials with a signed payload. asciiZGoogleAccessIdZExpires Signature)r sign_bytesencodebase64 b64encode signer_email)r expirationstring_to_signsignature_bytes signatureZservice_account_namer r rget_signed_query_params_v2<s rcCs`t|tjr$tjtjd}||}t|tjrBt|}|d}t|ts\t dt ||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. tzinfoi@B=Expected an integer timestamp, datetime, or timedelta. Got %s) rdatetime timedeltaNOWreplacerUTCZ_microseconds_from_datetimeint TypeErrorr )rnowmicrosr r rget_expiration_seconds_v2[s    r)cCst|tstdt|tjtjd}t|tr8|}t|t j rd|j dur\|jtjd}||}t|t j r|t| }|t krtdt |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 rrNz.Max allowed expiration interval is seven days )r_EXPIRATION_TYPESr&r r"r#rr$r%r rr! total_seconds SEVEN_DAYS ValueError)rr'secondsr r rget_expiration_seconds_v4}s$      r/cCs|durg}nt|tr$t|}|s0ggfStt}|D]0\}}|}d| }|| |q>t 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).0keyvalr r r z(get_canonical_headers..cSsg|]}dj|qS)z{}:{})r )r3itemr r r r7z)get_canonical_headers..) rdictlistitems collections defaultdictlowerstripr2splitappendsorted)headers normalizedr4r5ordered_headerscanonical_headersr r rget_canonical_headerss     rH _Canonical)methodresourcequery_parametersrDcCsvt|\}}|dkr"d}|d|dur8t||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)r?r@r3r4valuer r rr6sz"canonicalize_v2..?)rHrBrIrCr<urllibparse urlencode)rJrKrLrD_Z normalized_qpZ encoded_qpZcanonical_resourcer r rcanonicalize_v2s   rWrOGETcCst|}t||| | }|j|p d|p&dt|g}||j||jd|}| rt| rtt || | }| ||d}n t |||}|dur||d<|dur||d<| dur| |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. rO rNresponse-content-typeresponse-content-disposition generationz"{endpoint}{resource}?{querystring})ZendpointrKZ querystring)r)rWrJstrextendrDrBrKr2 _sign_messagerupdaterLrCr<r rSrTrU)rrKrapi_access_endpointrJ content_md5 content_type response_typeresponse_dispositionr\rDrLservice_account_email access_tokenZexpiration_stamp canonicalZelements_to_signrrZsigned_query_paramsZsorted_signed_query_paramsr r rgenerate_signed_url_v2s@m       rii: zhttps://storage.googleapis.comc$CsHt|}|durt\}}n|}|dd}| }| r8| sFt||j}|d}|d|}| durji} |durz|| d<|dur|| d<dd| D}d |vrtj|j| d <|d krd }d | d<t | \}}d |d}d dd|D}| duri} ndd| D} d| d<|| d<|| d<|| d<|| d<|durT|| d<|durf|| d<| durx| | 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: (Optional) 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 )r?)r3r4r r rr9.r7z*generate_signed_url_v4..hostHostrMrNstartzx-goog-resumablerY;cSsg|] \}}|qSr r )r3r4rVr r rr9:r7cSsi|]\}}||pdqS)rOr rPr r r ?r7z*generate_signed_url_v4..zGOOG4-RSA-SHA256zX-Goog-AlgorithmzX-Goog-Credentialz X-Goog-DatezX-Goog-ExpireszX-Goog-SignedHeadersrZr[r\zx-goog-content-sha256zUNSIGNED-PAYLOADrz{}{}?{}&X-Goog-Signature={})r/get_v4_now_dtstampsrrrSrTurlparsenetlocupperrHr2r< _url_encoder:hashlibsha256r hexdigestr_r b64decodebinasciihexlifydecoderr )$rrKrrarJrbrcrdrer\rDrLrfrgZ_request_timestampZexpiration_secondsZrequest_timestamp datestampZ client_emailZcredential_scopeZ credential header_namesrGrFZcanonical_header_stringZsigned_headersZcanonical_query_stringZlowercased_headerspayloadZcanonical_elementsZcanonical_requestZcanonical_request_hashZstring_elementsrrrr r rgenerate_signed_url_v4sq                 rcCs&t}|d}|d}||fS)z~Get current timestamp and datestamp in V4 valid format. :rtype: str, str :returns: Current timestamp, datestamp. z%Y%m%dT%H%M%SZz%Y%m%d)r"strftimedate)r' timestampr}r r rrq|s rqc Cst|}d}d|}d|dd}tdt|di}t }|||||d}|j t j j krxtd |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. rNzXhttps://iamcredentials.googleapis.com/v1/projects/-/serviceAccounts/{}:signBlob?alt=jsonzBearer zapplication/json) Authorizationz Content-typerzutf-8)urlrJbodyrDz%Error calling the IAM signBytes API: Z signedBlob)r _to_bytesr jsondumpsrrr|rRequeststatushttpclientOKrZTransportErrordataloads) messagergrfrJrrDrrequestresponserr r rr_s"  r_cCs 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)r3namerQr r rr9sz_url_encode..&)r<r2rC)Z query_paramsparamsr r rrus rucCs"t|tst|}tjj|ddS)zQuote query param. :type param: Any :param param: Query param to be encoded. :rtype: str :returns: URL encoded query param. ~)safe)rbytesr]rSrTquote)paramr r rrs r) rOrXNNNNNNNNN)&rrzr=r rvrrrSZgoogle.auth.credentialsrZ google.authrZgoogle.auth.transportrZ google.cloudrutcnowr"r rrr)r%r!r*r/rH namedtuplerIrWrir,ZDEFAULT_ENDPOINTrrqr_rurr r r rsr   (%6  [ ,