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# coding=utf-8
"""
oauthlib.oauth2.rfc6749.errors
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Error used both by OAuth 2 clients and providers to represent the spec
defined error responses for all four core grant types.
"""
from __future__ import unicode_literals
import json
from oauthlib.common import add_params_to_uri, urlencode
class OAuth2Error(Exception):
error = None
status_code = 400
description = ''
def __init__(self, description=None, uri=None, state=None,
status_code=None, request=None):
"""
description: A human-readable ASCII [USASCII] text providing
additional information, used to assist the client
developer in understanding the error that occurred.
Values for the "error_description" parameter MUST NOT
include characters outside the set
x20-21 / x23-5B / x5D-7E.
uri: A URI identifying a human-readable web page with information
about the error, used to provide the client developer with
additional information about the error. Values for the
"error_uri" parameter MUST conform to the URI- Reference
syntax, and thus MUST NOT include characters outside the set
x21 / x23-5B / x5D-7E.
state: A CSRF protection value received from the client.
request: Oauthlib Request object
"""
if description is not None:
self.description = description
message = '(%s) %s' % (self.error, self.description)
if request:
message += ' ' + repr(request)
super(OAuth2Error, self).__init__(message)
self.uri = uri
self.state = state
if status_code:
self.status_code = status_code
if request:
self.redirect_uri = request.redirect_uri
self.client_id = request.client_id
self.scopes = request.scopes
self.response_type = request.response_type
self.response_mode = request.response_mode
self.grant_type = request.grant_type
if not state:
self.state = request.state
else:
self.redirect_uri = None
self.client_id = None
self.scopes = None
self.response_type = None
self.response_mode = None
self.grant_type = None
def in_uri(self, uri):
fragment = self.response_mode == "fragment"
return add_params_to_uri(uri, self.twotuples, fragment)
@property
def twotuples(self):
error = [('error', self.error)]
if self.description:
error.append(('error_description', self.description))
if self.uri:
error.append(('error_uri', self.uri))
if self.state:
error.append(('state', self.state))
return error
@property
def urlencoded(self):
return urlencode(self.twotuples)
@property
def json(self):
return json.dumps(dict(self.twotuples))
class TokenExpiredError(OAuth2Error):
error = 'token_expired'
class InsecureTransportError(OAuth2Error):
error = 'insecure_transport'
description = 'OAuth 2 MUST utilize https.'
class MismatchingStateError(OAuth2Error):
error = 'mismatching_state'
description = 'CSRF Warning! State not equal in request and response.'
class MissingCodeError(OAuth2Error):
error = 'missing_code'
class MissingTokenError(OAuth2Error):
error = 'missing_token'
class MissingTokenTypeError(OAuth2Error):
error = 'missing_token_type'
class FatalClientError(OAuth2Error):
"""
Errors during authorization where user should not be redirected back.
If the request fails due to a missing, invalid, or mismatching
redirection URI, or if the client identifier is missing or invalid,
the authorization server SHOULD inform the resource owner of the
error and MUST NOT automatically redirect the user-agent to the
invalid redirection URI.
Instead the user should be informed of the error by the provider itself.
"""
pass
class InvalidRequestFatalError(FatalClientError):
"""
For fatal errors, the request is missing a required parameter, includes
an invalid parameter value, includes a parameter more than once, or is
otherwise malformed.
"""
error = 'invalid_request'
class InvalidRedirectURIError(InvalidRequestFatalError):
description = 'Invalid redirect URI.'
class MissingRedirectURIError(InvalidRequestFatalError):
description = 'Missing redirect URI.'
class MismatchingRedirectURIError(InvalidRequestFatalError):
description = 'Mismatching redirect URI.'
class InvalidClientIdError(InvalidRequestFatalError):
description = 'Invalid client_id parameter value.'
class MissingClientIdError(InvalidRequestFatalError):
description = 'Missing client_id parameter.'
class InvalidRequestError(OAuth2Error):
"""
The request is missing a required parameter, includes an invalid
parameter value, includes a parameter more than once, or is
otherwise malformed.
"""
error = 'invalid_request'
class MissingResponseTypeError(InvalidRequestError):
description = 'Missing response_type parameter.'
class AccessDeniedError(OAuth2Error):
"""
The resource owner or authorization server denied the request.
"""
error = 'access_denied'
status_code = 401
class UnsupportedResponseTypeError(OAuth2Error):
"""
The authorization server does not support obtaining an authorization
code using this method.
"""
error = 'unsupported_response_type'
class InvalidScopeError(OAuth2Error):
"""
The requested scope is invalid, unknown, or malformed.
"""
error = 'invalid_scope'
status_code = 401
class ServerError(OAuth2Error):
"""
The authorization server encountered an unexpected condition that
prevented it from fulfilling the request. (This error code is needed
because a 500 Internal Server Error HTTP status code cannot be returned
to the client via a HTTP redirect.)
"""
error = 'server_error'
class TemporarilyUnavailableError(OAuth2Error):
"""
The authorization server is currently unable to handle the request
due to a temporary overloading or maintenance of the server.
(This error code is needed because a 503 Service Unavailable HTTP
status code cannot be returned to the client via a HTTP redirect.)
"""
error = 'temporarily_unavailable'
class InvalidClientError(OAuth2Error):
"""
Client authentication failed (e.g. unknown client, no client
authentication included, or unsupported authentication method).
The authorization server MAY return an HTTP 401 (Unauthorized) status
code to indicate which HTTP authentication schemes are supported.
If the client attempted to authenticate via the "Authorization" request
header field, the authorization server MUST respond with an
HTTP 401 (Unauthorized) status code, and include the "WWW-Authenticate"
response header field matching the authentication scheme used by the
client.
"""
error = 'invalid_client'
status_code = 401
class InvalidGrantError(OAuth2Error):
"""
The provided authorization grant (e.g. authorization code, resource
owner credentials) or refresh token is invalid, expired, revoked, does
not match the redirection URI used in the authorization request, or was
issued to another client.
"""
error = 'invalid_grant'
status_code = 401
class UnauthorizedClientError(OAuth2Error):
"""
The authenticated client is not authorized to use this authorization
grant type.
"""
error = 'unauthorized_client'
status_code = 401
class UnsupportedGrantTypeError(OAuth2Error):
"""
The authorization grant type is not supported by the authorization
server.
"""
error = 'unsupported_grant_type'
class UnsupportedTokenTypeError(OAuth2Error):
"""
The authorization server does not support the revocation of the
presented token type. I.e. the client tried to revoke an access token
on a server not supporting this feature.
"""
error = 'unsupported_token_type'
class FatalOpenIDClientError(FatalClientError):
pass
class OpenIDClientError(OAuth2Error):
pass
class InteractionRequired(OpenIDClientError):
"""
The Authorization Server requires End-User interaction to proceed.
This error MAY be returned when the prompt parameter value in the
Authentication Request is none, but the Authentication Request cannot be
completed without displaying a user interface for End-User interaction.
"""
error = 'interaction_required'
status_code = 401
class LoginRequired(OpenIDClientError):
"""
The Authorization Server requires End-User authentication.
This error MAY be returned when the prompt parameter value in the
Authentication Request is none, but the Authentication Request cannot be
completed without displaying a user interface for End-User authentication.
"""
error = 'login_required'
status_code = 401
class AccountSelectionRequired(OpenIDClientError):
"""
The End-User is REQUIRED to select a session at the Authorization Server.
The End-User MAY be authenticated at the Authorization Server with
different associated accounts, but the End-User did not select a session.
This error MAY be returned when the prompt parameter value in the
Authentication Request is none, but the Authentication Request cannot be
completed without displaying a user interface to prompt for a session to
use.
"""
error = 'account_selection_required'
class ConsentRequired(OpenIDClientError):
"""
The Authorization Server requires End-User consent.
This error MAY be returned when the prompt parameter value in the
Authentication Request is none, but the Authentication Request cannot be
completed without displaying a user interface for End-User consent.
"""
error = 'consent_required'
status_code = 401
class InvalidRequestURI(OpenIDClientError):
"""
The request_uri in the Authorization Request returns an error or
contains invalid data.
"""
error = 'invalid_request_uri'
description = 'The request_uri in the Authorization Request returns an ' \
'error or contains invalid data.'
class InvalidRequestObject(OpenIDClientError):
"""
The request parameter contains an invalid Request Object.
"""
error = 'invalid_request_object'
description = 'The request parameter contains an invalid Request Object.'
class RequestNotSupported(OpenIDClientError):
"""
The OP does not support use of the request parameter.
"""
error = 'request_not_supported'
description = 'The request parameter is not supported.'
class RequestURINotSupported(OpenIDClientError):
"""
The OP does not support use of the request_uri parameter.
"""
error = 'request_uri_not_supported'
description = 'The request_uri parameter is not supported.'
class RegistrationNotSupported(OpenIDClientError):
"""
The OP does not support use of the registration parameter.
"""
error = 'registration_not_supported'
description = 'The registration parameter is not supported.'
class InvalidTokenError(OAuth2Error):
"""
The access token provided is expired, revoked, malformed, or
invalid for other reasons. The resource SHOULD respond with
the HTTP 401 (Unauthorized) status code. The client MAY
request a new access token and retry the protected resource
request.
"""
error = 'invalid_token'
status_code = 401
description = ("The access token provided is expired, revoked, malformed, "
"or invalid for other reasons.")
class InsufficientScopeError(OAuth2Error):
"""
The request requires higher privileges than provided by the
access token. The resource server SHOULD respond with the HTTP
403 (Forbidden) status code and MAY include the "scope"
attribute with the scope necessary to access the protected
resource.
"""
error = 'insufficient_scope'
status_code = 403
description = ("The request requires higher privileges than provided by "
"the access token.")
def raise_from_error(error, params=None):
import inspect
import sys
kwargs = {
'description': params.get('error_description'),
'uri': params.get('error_uri'),
'state': params.get('state')
}
for _, cls in inspect.getmembers(sys.modules[__name__], inspect.isclass):
if cls.error == error:
raise cls(**kwargs)