a
    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rR|j
dn|j
}|jtjkrptt|z,t|}	|	d }
t|	d d}|
|fW S  ttfy } z$tdt|}||W Y d	}~n
d	}~0 0 d	S )
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decodeZaccessTokenZ
expireTimez%Y-%m-%dT%H:%M:%SZz6{}: No access token or invalid expiration in response.N)r   Z_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_bodyZtoken_responsetokenexpiry
caught_excnew_exc r/   b/var/www/html/texto_audio/venv/lib/python3.9/site-packages/google/auth/impersonated_credentials.py_make_iam_token_request3   s4    



r1   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rX| jt	j
| _t| jdrX| jjrX| 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)superr2   __init__copy_source_credentials
isinstancer   Scopedwith_scopesr   Z
_IAM_SCOPEr   Z_always_use_jwt_accessr3   r&   Z_universe_domain_target_principal_target_scopes
_delegates_subject_DEFAULT_TOKEN_LIFETIME_SECS	_lifetimer+   r   utcnowr,   _quota_project_id_iam_endpoint_override_cred_file_path)	selfZsource_credentialstarget_principaltarget_scopes	delegatessubjectlifetimequota_project_idr'   	__class__r/   r0   r5      s,    *


zCredentials.__init__c                 C   s   t jS N)r	   ZCRED_TYPE_SA_IMPERSONATErE   r/   r/   r0   _metric_header_for_usage   s    z$Credentials._metric_header_for_usagec                 C   s   |  | d S rN   )_update_token)rE   r$   r/   r/   r0   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r| jtjkrtdt }| jt| jpd| 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)rH   scoperJ   Content-Typeapplication/jsonzNDomain-wide delegation is not supported in universes other than googleapis.comr/   )ZissrT   subZaudZiatexp)r$   r%   r   payloadrH   N)r$   r%   r   r   r&   r'   )"r7   Ztoken_stater   Z
TokenStateZSTALEINVALIDrR   r=   r<   strr@   r	   API_CLIENT_HEADERZ&token_request_access_token_impersonateapplyr>   r&   r   r   GoogleAuthErrorr   rA   r;   Zscopes_to_string_GOOGLE_OAUTH2_TOKEN_ENDPOINTZdatetime_to_secsr?   _sign_jwt_requestr
   Z	jwt_grantr+   r,   r1   rC   )rE   r$   r   r   nowrY   Z	assertion_r/   r/   r0   rQ      sZ    
	zCredentials._update_tokenc           
      C   s   ddl m} tjtj| j| j	}t
|d| jd}ddi}|| j}zzt }|D ]`}|j|||d}	|	jtjv rq^|	jtjkrtd|	 t
|	 d	   W |  S W |  n
|  0 td
d S )Nr   AuthorizedSessionr   )rY   rH   rU   rV   )r   r   r   zError calling sign_bytes: {}Z
signedBlobz#exhausted signBlob endpoint retries)google.auth.transport.requestsrd   r   Z_IAM_SIGN_ENDPOINTr   r   r   r&   r   r;   base64	b64encoder   r=   r7   r   ZExponentialBackoffpoststatus_codeZIAM_RETRY_CODESr   r   r   ZTransportErrorr   	b64decodeclose)
rE   messagerd   iam_sign_endpointr   r   authed_sessionretriesrb   r)   r/   r/   r0   
sign_bytesH  s8    
zCredentials.sign_bytesc                 C   s   | j S rN   r;   rO   r/   r/   r0   signer_emailj  s    zCredentials.signer_emailc                 C   s   | j S rN   rq   rO   r/   r/   r0   service_account_emailn  s    z!Credentials.service_account_emailc                 C   s   | S rN   r/   rO   r/   r/   r0   signerr  s    zCredentials.signerc                 C   s   | j  S rN   )r<   rO   r/   r/   r0   requires_scopesv  s    zCredentials.requires_scopesc                 C   s   | j r| j d| jdS d S )Nzimpersonated credentials)Zcredential_sourceZcredential_typer%   )rD   r;   rO   r/   r/   r0   get_cred_infoz  s    zCredentials.get_cred_infoc              	   C   s2   | j | j| j| j| j| j| j| jd}| j|_|S )N)rF   rG   rH   rJ   rK   r'   )	rM   r7   r;   r<   r=   r@   rB   rC   rD   )rE   credr/   r/   r0   
_make_copy  s    	zCredentials._make_copyc                 C   s   |   }||_|S rN   )rx   rB   )rE   rK   rw   r/   r/   r0   with_quota_project  s    zCredentials.with_quota_projectc                 C   s   |   }|p||_|S rN   )rx   r<   )rE   ZscopesZdefault_scopesrw   r/   r/   r0   r:     s    
zCredentials.with_scopes)N)__name__
__module____qualname____doc__r?   r5   rP   r   copy_docstringr   r2   rR   rQ   rp   propertyrr   rs   rt   ru   rv   rx   CredentialsWithQuotaProjectry   r9   r:   __classcell__r/   r/   rL   r0   r2   q   s6   BH

H"





	


r2   c                       sd   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)r4   r   r5   r8   r2   r   r^   _target_credentials_target_audience_include_emailrB   )rE   target_credentialstarget_audienceinclude_emailrK   rL   r/   r0   r5     s    
zIDTokenCredentials.__init__c                 C   s   | j ||| j| jdS N)r   r   r   rK   )rM   r   rB   )rE   r   r   r/   r/   r0   from_credentials  s    z#IDTokenCredentials.from_credentialsc                 C   s   | j | j|| j| jdS r   )rM   r   r   rB   )rE   r   r/   r/   r0   with_target_audience  s    z'IDTokenCredentials.with_target_audiencec                 C   s   | j | j| j|| jdS r   )rM   r   r   rB   )rE   r   r/   r/   r0   with_include_email  s    z%IDTokenCredentials.with_include_emailc                 C   s   | j | j| j| j|dS r   )rM   r   r   r   )rE   rK   r/   r/   r0   ry     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
|  0 |jtjkrtd		| | d
 }|| _ttj |ddd | _!d S )Nr   rc   )ZaudiencerH   ZincludeEmailrU   rV   )Zauth_requestr   )r   r   r   zError getting ID token: {}r+   F)verifyrX   )"re   rd   r   Z_IAM_IDTOKEN_ENDPOINTr   r   r   r   r&   r   rr   r   r=   r   r	   r\   Z"token_request_id_token_impersonater7   rh   r   r   r   rk   ri   r   r   r   r   r+   r   utcfromtimestampr   r   r,   )	rE   r$   rd   rm   r   r   rn   r)   Zid_tokenr/   r/   r0   rR     sB    
zIDTokenCredentials.refresh)NFN)N)rz   r{   r|   r}   r5   r   r   r   r   r~   r   r   ry   r2   rR   r   r/   r/   rL   r0   r     s      



r   c              
   C   s   t j|}|t|d}t|d}| |d||d}t|jdrT|jdn|j}|j	t
jkrrtt|zt|}	|	d }
|
W S  ttfy } z$tdt|}||W Y d}~n
d}~0 0 dS )	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
    )rH   rY   r   r   r   r   Z	signedJwtz{}: No signed JWT in response.N)r   Z_IAM_SIGNJWT_ENDPOINTr   r   r   r   r   r   r   r   r   r   r   r   r   r    r"   r#   )r$   r%   r   rY   rH   r(   r   r)   r*   Zjwt_responseZ
signed_jwtr-   r.   r/   r/   r0   r`     s&    


r`   )r}   rf   r6   r   http.clientclientr   r   Zgoogle.authr   r   r   r   r   r   r	   Zgoogle.oauth2r
   r   r?   r_   r   r1   r9   r   ZSigningr2   r   r`   r/   r/   r/   r0   <module>   s4   
>
  /n