o
    gU                     @   s   d Z ddlZddlZddlmZ ddlm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 ddlmZ dZdZdZejdfddZG dd dejejejZG dd dejZg fddZdS )a  Google 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)_exponential_backoff)_helpers)credentials)
exceptions)iam)jwt)metrics)_clientz*Unable to acquire impersonated credentialsi  z#https://oauth2.googleapis.com/tokenc              
   C   s   |pt jtj||}t|d}| |d||d}t	|j
dr)|j
dn|j
}|jtjkr8tt|zt|}	|	d }
t|	d d}|
|fW S  ttfyh } ztdt|}||d	}~ww )
a  Makes 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-8POSTurlmethodheadersbodydecodeaccessToken
expireTimez%Y-%m-%dT%H:%M:%SZz6{}: No access token or invalid expiration in response.N)r   _IAM_ENDPOINTreplacer   DEFAULT_UNIVERSE_DOMAINformatjsondumpsencodehasattrdatar   statushttp_clientOKr   RefreshError_REFRESH_ERRORloadsr   strptimeKeyError
ValueError)request	principalr   r   universe_domainiam_endpoint_overrideiam_endpointresponseresponse_bodytoken_responsetokenexpiry
caught_excnew_exc r3   [/var/www/visachat/venv/lib/python3.10/site-packages/google/auth/impersonated_credentials.py_make_iam_token_request3   s8   



r5   c                       s   e Zd ZdZddeddf fdd	Zdd Zee	j
dd Zd	d
 Zdd Zedd Zedd Zedd Zedd Zee	j
dd Zdd Zee	jdd Zee	jdddZ  ZS )Credentialsa  This 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)
    Nc	           	         s   t t|   t|| _t| jtjr,| jt	j
| _t| jdr,| jjr,| jd |j| _|| _|| _|| _|| _|p?t| _d| _t | _|| _|| _d| _dS )a$  
        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 (Optional[str]): The full IAM endpoint override
                with the target_principal embedded. This is useful when supporting
                impersonation with regional endpoints.
            subject (Optional[str]): sub field of a JWT. This field should only be set
                if you wish to impersonate as a user. This feature is useful when
                using domain wide delegation.
        _create_self_signed_jwtN)superr6   __init__copy_source_credentials
isinstancer   Scopedwith_scopesr   
_IAM_SCOPEr   _always_use_jwt_accessr7   r)   _universe_domain_target_principal_target_scopes
_delegates_subject_DEFAULT_TOKEN_LIFETIME_SECS	_lifetimer/   r   utcnowr0   _quota_project_id_iam_endpoint_override_cred_file_path)	selfsource_credentialstarget_principaltarget_scopes	delegatessubjectlifetimequota_project_idr*   	__class__r3   r4   r9      s,   *



zCredentials.__init__c                 C   s   t jS N)r	   CRED_TYPE_SA_IMPERSONATErL   r3   r3   r4   _metric_header_for_usage   s   z$Credentials._metric_header_for_usagec                 C   s   |  | d S rV   )_update_token)rL   r'   r3   r3   r4   refresh   s   zCredentials.refreshc                 C   s  | j jtjjks| j jtjjkr| j | | j| jt	| j
d d}ddtjt i}| j | | jrv| jtjkr@tdt }| jt| jpLd| jtt|t|t d}t|| j||| jd}t|t|\| _| _}d	S t || j||| j| j!d
\| _| _d	S )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)rP   scoperR   Content-Typeapplication/jsonzNDomain-wide delegation is not supported in universes other than googleapis.comr3   )issr]   subaudiatexp)r'   r(   r   payloadrP   N)r'   r(   r   r   r)   r*   )"r;   token_stater   
TokenStateSTALEINVALIDr[   rD   rC   strrG   r	   API_CLIENT_HEADER&token_request_access_token_impersonateapplyrE   r)   r   r   GoogleAuthErrorr   rH   rB   scopes_to_string_GOOGLE_OAUTH2_TOKEN_ENDPOINTdatetime_to_secsrF   _sign_jwt_requestr
   	jwt_grantr/   r0   r5   rJ   )rL   r'   r   r   nowre   	assertion_r3   r3   r4   rZ      sV   
	zCredentials._update_tokenc           
      C   s   ddl m} tjtj| j| j	}t
|d| jd}ddi}|| j}z=t }|D ]0}|j|||d}	|	jtjv r@q/|	jtjkrPtd|	 t
|	 d	   W |  S W |  n|  w td
)Nr   AuthorizedSessionr   )re   rP   r^   r_   )r   r   r   zError calling sign_bytes: {}
signedBlobz#exhausted signBlob endpoint retries)google.auth.transport.requestsrx   r   _IAM_SIGN_ENDPOINTr   r   r   r)   r   rB   base64	b64encoder   rD   r;   r   ExponentialBackoffpoststatus_codeIAM_RETRY_CODESr   r    r   TransportErrorr   	b64decodeclose)
rL   messagerx   iam_sign_endpointr   r   authed_sessionretriesrv   r,   r3   r3   r4   
sign_bytesH  s8   


zCredentials.sign_bytesc                 C      | j S rV   rB   rX   r3   r3   r4   signer_emailj     zCredentials.signer_emailc                 C   r   rV   r   rX   r3   r3   r4   service_account_emailn  r   z!Credentials.service_account_emailc                 C   s   | S rV   r3   rX   r3   r3   r4   signerr  s   zCredentials.signerc                 C   s   | j  S rV   )rC   rX   r3   r3   r4   requires_scopesv  s   zCredentials.requires_scopesc                 C   s   | j r| j d| jdS d S )Nzimpersonated credentials)credential_sourcecredential_typer(   )rK   rB   rX   r3   r3   r4   get_cred_infoz  s   zCredentials.get_cred_infoc              	   C   s2   | j | j| j| j| j| j| j| jd}| j|_|S )N)rN   rO   rP   rR   rS   r*   )	rU   r;   rB   rC   rD   rG   rI   rJ   rK   )rL   credr3   r3   r4   
_make_copy  s   	zCredentials._make_copyc                 C   s   |   }||_|S rV   )r   rI   )rL   rS   r   r3   r3   r4   with_quota_project  s   zCredentials.with_quota_projectc                 C   s   |   }|p||_|S rV   )r   rC   )rL   scopesdefault_scopesr   r3   r3   r4   r>     s   
zCredentials.with_scopesrV   )__name__
__module____qualname____doc__rF   r9   rY   r   copy_docstringr   r6   r[   rZ   r   propertyr   r   r   r   r   r   CredentialsWithQuotaProjectr   r=   r>   __classcell__r3   r3   rT   r4   r6   q   s8    BH

H"





	


r6   c                       sj   e Zd ZdZ			d fdd	ZdddZdd	 Zd
d Ze	e
jdd Ze	e
jdd Z  ZS )IDTokenCredentialszAOpen ID Connect ID Token-based service account credentials.

    NFc                    s>   t t|   t|tstd|| _|| _|| _	|| _
dS )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)r8   r   r9   r<   r6   r   rn   _target_credentials_target_audience_include_emailrI   )rL   target_credentialstarget_audienceinclude_emailrS   rT   r3   r4   r9     s   

zIDTokenCredentials.__init__c                 C   s   | j ||| j| jdS N)r   r   r   rS   )rU   r   rI   )rL   r   r   r3   r3   r4   from_credentials  s   z#IDTokenCredentials.from_credentialsc                 C   s   | j | j|| j| jdS r   )rU   r   r   rI   )rL   r   r3   r3   r4   with_target_audience  s   z'IDTokenCredentials.with_target_audiencec                 C   s   | j | j| j|| jdS r   )rU   r   r   rI   )rL   r   r3   r3   r4   with_include_email  s   z%IDTokenCredentials.with_include_emailc                 C   s   | j | j| j| j|dS r   )rU   r   r   r   )rL   rS   r3   r3   r4   r     s   z%IDTokenCredentials.with_quota_projectc           	      C   s   ddl m} tjtj| jj	| jj
}| j| jj| jd}ddtjt i}|| jj|d}z|j||t|dd}W |  n|  w |jtjkrZtd		| | d
 }|| _ttj |ddd | _!d S )Nr   rw   )audiencerP   includeEmailr^   r_   )auth_requestr   )r   r   r   zError getting ID token: {}r/   F)verifyrd   )"rz   rx   r   _IAM_IDTOKEN_ENDPOINTr   r   r   r   r)   r   r   r   rD   r   r	   rk   "token_request_id_token_impersonater;   r   r   r   r   r   r   r   r    r   r!   r/   r   utcfromtimestampr   r   r0   )	rL   r'   rx   r   r   r   r   r,   id_tokenr3   r3   r4   r[     sB   


zIDTokenCredentials.refresh)NFNrV   )r   r   r   r   r9   r   r   r   r   r   r   r   r   r6   r[   r   r3   r3   rT   r4   r     s    



r   c              
   C   s   t j|}|t|d}t|d}| |d||d}t|jdr*|jdn|j}|j	t
jkr9tt|zt|}	|	d }
|
W S  ttfy_ } ztdt|}||d}~ww )	a  Makes a request to the Google Cloud IAM service to sign a JWT using a
    service account's system-managed private key.
    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.
        payload (Mapping[str, str]): The JWT payload to sign. Must be a
            serialized JSON object that contains a JWT Claims Set.
        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.

    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
    )rP   re   r   r   r   r   	signedJwtz{}: No signed JWT in response.N)r   _IAM_SIGNJWT_ENDPOINTr   r   r   r   r   r   r   r   r   r    r   r!   r"   r#   r%   r&   )r'   r(   r   re   rP   r+   r   r,   r-   jwt_response
signed_jwtr1   r2   r3   r3   r4   rr     s*   


rr   )r   r|   r:   r   http.clientclientr   r   google.authr   r   r   r   r   r   r	   google.oauth2r
   r"   rF   rp   r   r5   r=   r   Signingr6   r   rr   r3   r3   r3   r4   <module>   s6   

>  /n