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July 15, 2019 23:21
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Implementation of GitHub authentication using OAuth2 for Tornado.
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import tornado.auth | |
from tornado import escape | |
import tornado.web | |
import tornado | |
class GithubOAuth2Mixin(tornado.auth.OAuth2Mixin): | |
"""GitHub authentication using OAuth2.""" | |
_OAUTH_ACCESS_TOKEN_URL = "https://github.com/login/oauth/access_token?" | |
_OAUTH_AUTHORIZE_URL = "https://github.com/login/oauth/authorize?" | |
_OAUTH_NO_CALLBACKS = False | |
_API_URL = "https://api.github.com" | |
async def get_authenticated_user(self, redirect_uri, client_id, client_secret, code, extra_fields=None): | |
http = self.get_auth_http_client() | |
args = { | |
"redirect_uri": redirect_uri, | |
"code": code, | |
"client_id": client_id, | |
"client_secret": client_secret, | |
} | |
fields = {'login','id', 'email', 'avatar_url'} | |
if extra_fields: | |
fields.update(extra_fields) | |
response = await http.fetch( | |
self._oauth_request_token_url(**args), | |
headers={"Accept": "application/json"}, | |
) | |
args = escape.json_decode(response.body) | |
session = { | |
"access_token": args.get("access_token"), | |
} | |
assert session["access_token"] is not None | |
user = await self.github_request( | |
path="/user", | |
access_token=session["access_token"], | |
) | |
if user is None: | |
return None | |
fieldmap = {} | |
for field in fields: | |
fieldmap[field] = user.get(field) | |
return fieldmap | |
async def github_request(self, path, access_token): | |
url = self._API_URL + path | |
response = await self.get_auth_http_client().fetch( | |
url, | |
headers={"Authorization": "token {}".format(access_token)}, | |
user_agent="PMR" | |
) | |
return escape.json_decode(response.body) |
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