a !f_?@sdZddlZddlZddlmZddlZddlZddlmZddlm Z ddlm Z ddlm Z ddlm Z dd lm Z d Zd gZd Zd ZdZdZd ZdZdddZGddde je je jZGddde jZdS)aGoogle Cloud Impersonated credentials. This module provides authentication for applications where local credentials impersonates a remote service account using `IAM Credentials API`_. This class can be used to impersonate a service account as long as the original Credential object has the "Service Account Token Creator" role on the target service account. .. _IAM Credentials API: https://cloud.google.com/iam/credentials/reference/rest/ N)datetime) http_client)_helpers) credentials) exceptions)jwt)metricsiz#https://www.googleapis.com/auth/iamzZhttps://iamcredentials.googleapis.com/v1/projects/-/serviceAccounts/{}:generateAccessTokenzOhttps://iamcredentials.googleapis.com/v1/projects/-/serviceAccounts/{}:signBlobzVhttps://iamcredentials.googleapis.com/v1/projects/-/serviceAccounts/{}:generateIdTokenz*Unable to acquire impersonated credentialsz#https://oauth2.googleapis.com/tokenc Cs|p t|}t|d}||d||d}t|jdrF|jdn|j}|jt j krdt t |z,t|}|d} t|dd} | | fWSttfy} z*t dt |} t| | WYd } ~ n d } ~ 00d S) aMakes a request to the Google Cloud IAM service for an access token. Args: request (Request): The Request object to use. principal (str): The principal to request an access token for. headers (Mapping[str, str]): Map of headers to transmit. body (Mapping[str, str]): JSON Payload body for the iamcredentials API call. iam_endpoint_override (Optiona[str]): The full IAM endpoint override with the target_principal embedded. This is useful when supporting impersonation with regional endpoints. Raises: google.auth.exceptions.TransportError: Raised if there is an underlying HTTP connection error google.auth.exceptions.RefreshError: Raised if the impersonated credentials are not available. Common reasons are `iamcredentials.googleapis.com` is not enabled or the `Service Account Token Creator` is not assigned utf-8POST)urlmethodheadersbodydecodeZ accessTokenZ expireTimez%Y-%m-%dT%H:%M:%SZz6{}: No access token or invalid expiration in response.N) _IAM_ENDPOINTformatjsondumpsencodehasattrdatarstatusrOKrZ RefreshError_REFRESH_ERRORloadsrstrptimeKeyError ValueErrorsix raise_from) request principalr riam_endpoint_overrideZ iam_endpointresponseZ response_bodyZtoken_responsetokenexpiryZ caught_excnew_excr'e/var/www/html/python-backend/venv/lib/python3.9/site-packages/google/auth/impersonated_credentials.py_make_iam_token_requestDs,     r)cseZdZdZdeddffdd ZddZee j ddZ d d Z d d Z ed dZeddZeddZeddZee jddZee jdddZZS) CredentialsaThis module defines impersonated credentials which are essentially impersonated identities. Impersonated Credentials allows credentials issued to a user or service account to impersonate another. The target service account must grant the originating credential principal the `Service Account Token Creator`_ IAM role: For more information about Token Creator IAM role and IAMCredentials API, see `Creating Short-Lived Service Account Credentials`_. .. _Service Account Token Creator: https://cloud.google.com/iam/docs/service-accounts#the_service_account_token_creator_role .. _Creating Short-Lived Service Account Credentials: https://cloud.google.com/iam/docs/creating-short-lived-service-account-credentials Usage: First grant source_credentials the `Service Account Token Creator` role on the target account to impersonate. In this example, the service account represented by svc_account.json has the token creator role on `impersonated-account@_project_.iam.gserviceaccount.com`. Enable the IAMCredentials API on the source project: `gcloud services enable iamcredentials.googleapis.com`. Initialize a source credential which does not have access to list bucket:: from google.oauth2 import service_account target_scopes = [ 'https://www.googleapis.com/auth/devstorage.read_only'] source_credentials = ( service_account.Credentials.from_service_account_file( '/path/to/svc_account.json', scopes=target_scopes)) Now use the source credentials to acquire credentials to impersonate another service account:: from google.auth import impersonated_credentials target_credentials = impersonated_credentials.Credentials( source_credentials=source_credentials, target_principal='impersonated-account@_project_.iam.gserviceaccount.com', target_scopes = target_scopes, lifetime=500) Resource access is granted:: client = storage.Client(credentials=target_credentials) buckets = client.list_buckets(project='your_project') for bucket in buckets: print(bucket.name) Ncsrtt|t||_t|jtjr6|jt |_||_ ||_ ||_ |pNt |_d|_t|_||_||_dS)aL Args: source_credentials (google.auth.Credentials): The source credential used as to acquire the impersonated credentials. target_principal (str): The service account to impersonate. target_scopes (Sequence[str]): Scopes to request during the authorization grant. delegates (Sequence[str]): The chained list of delegates required to grant the final access_token. If set, the sequence of identities must have "Service Account Token Creator" capability granted to the prceeding identity. For example, if set to [serviceAccountB, serviceAccountC], the source_credential must have the Token Creator role on serviceAccountB. serviceAccountB must have the Token Creator on serviceAccountC. Finally, C must have Token Creator on target_principal. If left unset, source_credential must have that role on target_principal. lifetime (int): Number of seconds the delegated credential should be valid for (upto 3600). quota_project_id (Optional[str]): The project ID used for quota and billing. This project may be different from the project used to create the credentials. iam_endpoint_override (Optiona[str]): The full IAM endpoint override with the target_principal embedded. This is useful when supporting impersonation with regional endpoints. N)superr*__init__copy_source_credentials isinstancerScoped with_scopes _IAM_SCOPE_target_principal_target_scopes _delegates_DEFAULT_TOKEN_LIFETIME_SECS _lifetimer$rutcnowr%_quota_project_id_iam_endpoint_override)selfZsource_credentialstarget_principal target_scopes delegateslifetimequota_project_idr" __class__r'r(r,s&   zCredentials.__init__cCstjSN)rZCRED_TYPE_SA_IMPERSONATEr;r'r'r(_metric_header_for_usagesz$Credentials._metric_header_for_usagecCs||dSrC) _update_token)r;r r'r'r(refreshszCredentials.refreshcCsn|jjs|j||j|jt|jdd}ddtjt i}|j |t ||j |||j d\|_|_dS)zUpdates credentials with a new access_token representing the impersonated account. Args: request (google.auth.transport.requests.Request): Request object to use for refreshing credentials. s)r>scoper? 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NFcs>tt|t|ts"td||_||_||_ ||_ dS)a Args: target_credentials (google.auth.Credentials): The target credential used as to acquire the id tokens for. target_audience (string): Audience to issue the token for. include_email (bool): Include email in IdToken quota_project_id (Optional[str]): The project ID used for quota and billing. z4Provided Credential must be impersonated_credentialsN) r+rnr,r/r*rZGoogleAuthError_target_credentials_target_audience_include_emailr9)r;target_credentialstarget_audience include_emailr@rAr'r(r,fs zIDTokenCredentials.__init__cCs|j|||j|jdSN)rrrsrtr@)rBrqr9)r;rrrsr'r'r(from_credentialss z#IDTokenCredentials.from_credentialscCs|j|j||j|jdSru)rBrorqr9)r;rsr'r'r(with_target_audiences z'IDTokenCredentials.with_target_audiencecCs|j|j|j||jdSru)rBrorpr9)r;rtr'r'r(with_include_emails z%IDTokenCredentials.with_include_emailcCs|j|j|j|j|dSru)rBrorprqrdr'r'r(res z%IDTokenCredentials.with_quota_projectc Csddlm}t|jj}|j|jj|jd}ddt j t i}||jj |d}|j ||t|dd}|d }||_ttj|d d d |_dS) NrrO)Zaudiencer>Z includeEmailrJrK)Z auth_requestr )r r rr$F)verifyexp)rRrP_IAM_IDTOKEN_ENDPOINTrror_rpr5rqrrMZ"token_request_id_token_impersonater.rVrrrr$r fromtimestamprrr%) r;r rPr[rr r\r#Zid_tokenr'r'r(rGs,   zIDTokenCredentials.refresh)NFN)N)rfrgrhrir,rvrwrxrrjrrlrer*rGrmr'r'rAr(rnas    rn)N)rirTr-rrrZ six.movesrZ google.authrrrrrr6r2rrSr{rZ_DEFAULT_TOKEN_URIr)r0rlZSigningr*rnr'r'r'r(s:         7  g