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bazarr/libs/oauthlib/oauth2/rfc6749/request_validator.py
morpheus65535 0f061f2122 Include dependencies and remove requirements.txt
2018-09-16 20:33:04 -04:00

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# -*- coding: utf-8 -*-
"""
oauthlib.oauth2.rfc6749.grant_types
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"""
from __future__ import absolute_import, unicode_literals
import logging
log = logging.getLogger(__name__)
class RequestValidator(object):
def client_authentication_required(self, request, *args, **kwargs):
"""Determine if client authentication is required for current request.
According to the rfc6749, client authentication is required in the following cases:
- Resource Owner Password Credentials Grant, when Client type is Confidential or when
Client was issued client credentials or whenever Client provided client
authentication, see `Section 4.3.2`_.
- Authorization Code Grant, when Client type is Confidential or when Client was issued
client credentials or whenever Client provided client authentication,
see `Section 4.1.3`_.
- Refresh Token Grant, when Client type is Confidential or when Client was issued
client credentials or whenever Client provided client authentication, see
`Section 6`_
:param request: oauthlib.common.Request
:rtype: True or False
Method is used by:
- Authorization Code Grant
- Resource Owner Password Credentials Grant
- Refresh Token Grant
.. _`Section 4.3.2`: https://tools.ietf.org/html/rfc6749#section-4.3.2
.. _`Section 4.1.3`: https://tools.ietf.org/html/rfc6749#section-4.1.3
.. _`Section 6`: https://tools.ietf.org/html/rfc6749#section-6
"""
return True
def authenticate_client(self, request, *args, **kwargs):
"""Authenticate client through means outside the OAuth 2 spec.
Means of authentication is negotiated beforehand and may for example
be `HTTP Basic Authentication Scheme`_ which utilizes the Authorization
header.
Headers may be accesses through request.headers and parameters found in
both body and query can be obtained by direct attribute access, i.e.
request.client_id for client_id in the URL query.
:param request: oauthlib.common.Request
:rtype: True or False
Method is used by:
- Authorization Code Grant
- Resource Owner Password Credentials Grant (may be disabled)
- Client Credentials Grant
- Refresh Token Grant
.. _`HTTP Basic Authentication Scheme`: https://tools.ietf.org/html/rfc1945#section-11.1
"""
raise NotImplementedError('Subclasses must implement this method.')
def authenticate_client_id(self, client_id, request, *args, **kwargs):
"""Ensure client_id belong to a non-confidential client.
A non-confidential client is one that is not required to authenticate
through other means, such as using HTTP Basic.
Note, while not strictly necessary it can often be very convenient
to set request.client to the client object associated with the
given client_id.
:param request: oauthlib.common.Request
:rtype: True or False
Method is used by:
- Authorization Code Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def confirm_redirect_uri(self, client_id, code, redirect_uri, client, request,
*args, **kwargs):
"""Ensure that the authorization process represented by this authorization
code began with this 'redirect_uri'.
If the client specifies a redirect_uri when obtaining code then that
redirect URI must be bound to the code and verified equal in this
method, according to RFC 6749 section 4.1.3. Do not compare against
the client's allowed redirect URIs, but against the URI used when the
code was saved.
:param client_id: Unicode client identifier
:param code: Unicode authorization_code.
:param redirect_uri: Unicode absolute URI
:param client: Client object set by you, see authenticate_client.
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- Authorization Code Grant (during token request)
"""
raise NotImplementedError('Subclasses must implement this method.')
def get_default_redirect_uri(self, client_id, request, *args, **kwargs):
"""Get the default redirect URI for the client.
:param client_id: Unicode client identifier
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: The default redirect URI for the client
Method is used by:
- Authorization Code Grant
- Implicit Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def get_default_scopes(self, client_id, request, *args, **kwargs):
"""Get the default scopes for the client.
:param client_id: Unicode client identifier
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: List of default scopes
Method is used by all core grant types:
- Authorization Code Grant
- Implicit Grant
- Resource Owner Password Credentials Grant
- Client Credentials grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def get_original_scopes(self, refresh_token, request, *args, **kwargs):
"""Get the list of scopes associated with the refresh token.
:param refresh_token: Unicode refresh token
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: List of scopes.
Method is used by:
- Refresh token grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def is_within_original_scope(self, request_scopes, refresh_token, request, *args, **kwargs):
"""Check if requested scopes are within a scope of the refresh token.
When access tokens are refreshed the scope of the new token
needs to be within the scope of the original token. This is
ensured by checking that all requested scopes strings are on
the list returned by the get_original_scopes. If this check
fails, is_within_original_scope is called. The method can be
used in situations where returning all valid scopes from the
get_original_scopes is not practical.
:param request_scopes: A list of scopes that were requested by client
:param refresh_token: Unicode refresh_token
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- Refresh token grant
"""
return False
def invalidate_authorization_code(self, client_id, code, request, *args, **kwargs):
"""Invalidate an authorization code after use.
:param client_id: Unicode client identifier
:param code: The authorization code grant (request.code).
:param request: The HTTP Request (oauthlib.common.Request)
Method is used by:
- Authorization Code Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def revoke_token(self, token, token_type_hint, request, *args, **kwargs):
"""Revoke an access or refresh token.
:param token: The token string.
:param token_type_hint: access_token or refresh_token.
:param request: The HTTP Request (oauthlib.common.Request)
Method is used by:
- Revocation Endpoint
"""
raise NotImplementedError('Subclasses must implement this method.')
def rotate_refresh_token(self, request):
"""Determine whether to rotate the refresh token. Default, yes.
When access tokens are refreshed the old refresh token can be kept
or replaced with a new one (rotated). Return True to rotate and
and False for keeping original.
:param request: oauthlib.common.Request
:rtype: True or False
Method is used by:
- Refresh Token Grant
"""
return True
def save_authorization_code(self, client_id, code, request, *args, **kwargs):
"""Persist the authorization_code.
The code should at minimum be stored with:
- the client_id (client_id)
- the redirect URI used (request.redirect_uri)
- a resource owner / user (request.user)
- the authorized scopes (request.scopes)
- the client state, if given (code.get('state'))
The 'code' argument is actually a dictionary, containing at least a
'code' key with the actual authorization code:
{'code': 'sdf345jsdf0934f'}
It may also have a 'state' key containing a nonce for the client, if it
chose to send one. That value should be saved and used in
'validate_code'.
It may also have a 'claims' parameter which, when present, will be a dict
deserialized from JSON as described at
http://openid.net/specs/openid-connect-core-1_0.html#ClaimsParameter
This value should be saved in this method and used again in 'validate_code'.
:param client_id: Unicode client identifier
:param code: A dict of the authorization code grant and, optionally, state.
:param request: The HTTP Request (oauthlib.common.Request)
Method is used by:
- Authorization Code Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def save_token(self, token, request, *args, **kwargs):
"""Persist the token with a token type specific method.
Currently, only save_bearer_token is supported.
"""
return self.save_bearer_token(token, request, *args, **kwargs)
def save_bearer_token(self, token, request, *args, **kwargs):
"""Persist the Bearer token.
The Bearer token should at minimum be associated with:
- a client and it's client_id, if available
- a resource owner / user (request.user)
- authorized scopes (request.scopes)
- an expiration time
- a refresh token, if issued
- a claims document, if present in request.claims
The Bearer token dict may hold a number of items::
{
'token_type': 'Bearer',
'access_token': 'askfjh234as9sd8',
'expires_in': 3600,
'scope': 'string of space separated authorized scopes',
'refresh_token': '23sdf876234', # if issued
'state': 'given_by_client', # if supplied by client
}
Note that while "scope" is a string-separated list of authorized scopes,
the original list is still available in request.scopes
Also note that if an Authorization Code grant request included a valid claims
parameter (for OpenID Connect) then the request.claims property will contain
the claims dict, which should be saved for later use when generating the
id_token and/or UserInfo response content.
:param client_id: Unicode client identifier
:param token: A Bearer token dict
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: The default redirect URI for the client
Method is used by all core grant types issuing Bearer tokens:
- Authorization Code Grant
- Implicit Grant
- Resource Owner Password Credentials Grant (might not associate a client)
- Client Credentials grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def get_id_token(self, token, token_handler, request):
"""
In the OpenID Connect workflows when an ID Token is requested this method is called.
Subclasses should implement the construction, signing and optional encryption of the
ID Token as described in the OpenID Connect spec.
In addition to the standard OAuth2 request properties, the request may also contain
these OIDC specific properties which are useful to this method:
- nonce, if workflow is implicit or hybrid and it was provided
- claims, if provided to the original Authorization Code request
The token parameter is a dict which may contain an ``access_token`` entry, in which
case the resulting ID Token *should* include a calculated ``at_hash`` claim.
Similarly, when the request parameter has a ``code`` property defined, the ID Token
*should* include a calculated ``c_hash`` claim.
http://openid.net/specs/openid-connect-core-1_0.html (sections `3.1.3.6`_, `3.2.2.10`_, `3.3.2.11`_)
.. _`3.1.3.6`: http://openid.net/specs/openid-connect-core-1_0.html#CodeIDToken
.. _`3.2.2.10`: http://openid.net/specs/openid-connect-core-1_0.html#ImplicitIDToken
.. _`3.3.2.11`: http://openid.net/specs/openid-connect-core-1_0.html#HybridIDToken
:param token: A Bearer token dict
:param token_handler: the token handler (BearerToken class)
:param request: the HTTP Request (oauthlib.common.Request)
:return: The ID Token (a JWS signed JWT)
"""
# the request.scope should be used by the get_id_token() method to determine which claims to include in the resulting id_token
raise NotImplementedError('Subclasses must implement this method.')
def validate_bearer_token(self, token, scopes, request):
"""Ensure the Bearer token is valid and authorized access to scopes.
:param token: A string of random characters.
:param scopes: A list of scopes associated with the protected resource.
:param request: The HTTP Request (oauthlib.common.Request)
A key to OAuth 2 security and restricting impact of leaked tokens is
the short expiration time of tokens, *always ensure the token has not
expired!*.
Two different approaches to scope validation:
1) all(scopes). The token must be authorized access to all scopes
associated with the resource. For example, the
token has access to ``read-only`` and ``images``,
thus the client can view images but not upload new.
Allows for fine grained access control through
combining various scopes.
2) any(scopes). The token must be authorized access to one of the
scopes associated with the resource. For example,
token has access to ``read-only-images``.
Allows for fine grained, although arguably less
convenient, access control.
A powerful way to use scopes would mimic UNIX ACLs and see a scope
as a group with certain privileges. For a restful API these might
map to HTTP verbs instead of read, write and execute.
Note, the request.user attribute can be set to the resource owner
associated with this token. Similarly the request.client and
request.scopes attribute can be set to associated client object
and authorized scopes. If you then use a decorator such as the
one provided for django these attributes will be made available
in all protected views as keyword arguments.
:param token: Unicode Bearer token
:param scopes: List of scopes (defined by you)
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is indirectly used by all core Bearer token issuing grant types:
- Authorization Code Grant
- Implicit Grant
- Resource Owner Password Credentials Grant
- Client Credentials Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_client_id(self, client_id, request, *args, **kwargs):
"""Ensure client_id belong to a valid and active client.
Note, while not strictly necessary it can often be very convenient
to set request.client to the client object associated with the
given client_id.
:param request: oauthlib.common.Request
:rtype: True or False
Method is used by:
- Authorization Code Grant
- Implicit Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_code(self, client_id, code, client, request, *args, **kwargs):
"""Verify that the authorization_code is valid and assigned to the given
client.
Before returning true, set the following based on the information stored
with the code in 'save_authorization_code':
- request.user
- request.state (if given)
- request.scopes
- request.claims (if given)
OBS! The request.user attribute should be set to the resource owner
associated with this authorization code. Similarly request.scopes
must also be set.
The request.claims property, if it was given, should assigned a dict.
:param client_id: Unicode client identifier
:param code: Unicode authorization code
:param client: Client object set by you, see authenticate_client.
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- Authorization Code Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_grant_type(self, client_id, grant_type, client, request, *args, **kwargs):
"""Ensure client is authorized to use the grant_type requested.
:param client_id: Unicode client identifier
:param grant_type: Unicode grant type, i.e. authorization_code, password.
:param client: Client object set by you, see authenticate_client.
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- Authorization Code Grant
- Resource Owner Password Credentials Grant
- Client Credentials Grant
- Refresh Token Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_redirect_uri(self, client_id, redirect_uri, request, *args, **kwargs):
"""Ensure client is authorized to redirect to the redirect_uri requested.
All clients should register the absolute URIs of all URIs they intend
to redirect to. The registration is outside of the scope of oauthlib.
:param client_id: Unicode client identifier
:param redirect_uri: Unicode absolute URI
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- Authorization Code Grant
- Implicit Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_refresh_token(self, refresh_token, client, request, *args, **kwargs):
"""Ensure the Bearer token is valid and authorized access to scopes.
OBS! The request.user attribute should be set to the resource owner
associated with this refresh token.
:param refresh_token: Unicode refresh token
:param client: Client object set by you, see authenticate_client.
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- Authorization Code Grant (indirectly by issuing refresh tokens)
- Resource Owner Password Credentials Grant (also indirectly)
- Refresh Token Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_response_type(self, client_id, response_type, client, request, *args, **kwargs):
"""Ensure client is authorized to use the response_type requested.
:param client_id: Unicode client identifier
:param response_type: Unicode response type, i.e. code, token.
:param client: Client object set by you, see authenticate_client.
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- Authorization Code Grant
- Implicit Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_scopes(self, client_id, scopes, client, request, *args, **kwargs):
"""Ensure the client is authorized access to requested scopes.
:param client_id: Unicode client identifier
:param scopes: List of scopes (defined by you)
:param client: Client object set by you, see authenticate_client.
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by all core grant types:
- Authorization Code Grant
- Implicit Grant
- Resource Owner Password Credentials Grant
- Client Credentials Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_silent_authorization(self, request):
"""Ensure the logged in user has authorized silent OpenID authorization.
Silent OpenID authorization allows access tokens and id tokens to be
granted to clients without any user prompt or interaction.
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- OpenIDConnectAuthCode
- OpenIDConnectImplicit
- OpenIDConnectHybrid
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_silent_login(self, request):
"""Ensure session user has authorized silent OpenID login.
If no user is logged in or has not authorized silent login, this
method should return False.
If the user is logged in but associated with multiple accounts and
not selected which one to link to the token then this method should
raise an oauthlib.oauth2.AccountSelectionRequired error.
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- OpenIDConnectAuthCode
- OpenIDConnectImplicit
- OpenIDConnectHybrid
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_user(self, username, password, client, request, *args, **kwargs):
"""Ensure the username and password is valid.
OBS! The validation should also set the user attribute of the request
to a valid resource owner, i.e. request.user = username or similar. If
not set you will be unable to associate a token with a user in the
persistance method used (commonly, save_bearer_token).
:param username: Unicode username
:param password: Unicode password
:param client: Client object set by you, see authenticate_client.
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- Resource Owner Password Credentials Grant
"""
raise NotImplementedError('Subclasses must implement this method.')
def validate_user_match(self, id_token_hint, scopes, claims, request):
"""Ensure client supplied user id hint matches session user.
If the sub claim or id_token_hint is supplied then the session
user must match the given ID.
:param id_token_hint: User identifier string.
:param scopes: List of OAuth 2 scopes and OpenID claims (strings).
:param claims: OpenID Connect claims dict.
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: True or False
Method is used by:
- OpenIDConnectAuthCode
- OpenIDConnectImplicit
- OpenIDConnectHybrid
"""
raise NotImplementedError('Subclasses must implement this method.')
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