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import base64
from urllib.parse import quote
from authlib.common.urls import add_params_to_qs, add_params_to_uri
from authlib.common.encoding import to_bytes, to_native
from .rfc6749 import OAuth2Token
from .rfc6750 import add_bearer_token
def encode_client_secret_basic(client, method, uri, headers, body):
text = f'{quote(client.client_id)}:{quote(client.client_secret)}'
auth = to_native(base64.b64encode(to_bytes(text, 'latin1')))
headers['Authorization'] = f'Basic {auth}'
return uri, headers, body
def encode_client_secret_post(client, method, uri, headers, body):
body = add_params_to_qs(body or '', [
('client_id', client.client_id),
('client_secret', client.client_secret or '')
])
if 'Content-Length' in headers:
headers['Content-Length'] = str(len(body))
return uri, headers, body
def encode_none(client, method, uri, headers, body):
if method == 'GET':
uri = add_params_to_uri(uri, [('client_id', client.client_id)])
return uri, headers, body
body = add_params_to_qs(body, [('client_id', client.client_id)])
if 'Content-Length' in headers:
headers['Content-Length'] = str(len(body))
return uri, headers, body
class ClientAuth:
"""Attaches OAuth Client Information to HTTP requests.
:param client_id: Client ID, which you get from client registration.
:param client_secret: Client Secret, which you get from registration.
:param auth_method: Client auth method for token endpoint. The supported
methods for now:
* client_secret_basic (default)
* client_secret_post
* none
"""
DEFAULT_AUTH_METHODS = {
'client_secret_basic': encode_client_secret_basic,
'client_secret_post': encode_client_secret_post,
'none': encode_none,
}
def __init__(self, client_id, client_secret, auth_method=None):
if auth_method is None:
auth_method = 'client_secret_basic'
self.client_id = client_id
self.client_secret = client_secret
if auth_method in self.DEFAULT_AUTH_METHODS:
auth_method = self.DEFAULT_AUTH_METHODS[auth_method]
self.auth_method = auth_method
def prepare(self, method, uri, headers, body):
return self.auth_method(self, method, uri, headers, body)
class TokenAuth:
"""Attach token information to HTTP requests.
:param token: A dict or OAuth2Token instance of an OAuth 2.0 token
:param token_placement: The placement of the token, default is ``header``,
available choices:
* header (default)
* body
* uri
"""
DEFAULT_TOKEN_TYPE = 'bearer'
SIGN_METHODS = {
'bearer': add_bearer_token
}
def __init__(self, token, token_placement='header', client=None):
self.token = OAuth2Token.from_dict(token)
self.token_placement = token_placement
self.client = client
self.hooks = set()
def set_token(self, token):
self.token = OAuth2Token.from_dict(token)
def prepare(self, uri, headers, body):
token_type = self.token.get('token_type', self.DEFAULT_TOKEN_TYPE)
sign = self.SIGN_METHODS[token_type.lower()]
uri, headers, body = sign(
self.token['access_token'],
uri, headers, body,
self.token_placement)
for hook in self.hooks:
uri, headers, body = hook(uri, headers, body)
return uri, headers, body