69 lines
2.4 KiB
Python
69 lines
2.4 KiB
Python
import logging
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import requests
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from django.contrib.auth import login
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from django.http.request import HttpRequest
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from django.shortcuts import redirect
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from users.models import CustomUser
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USER_API_URI = 'https://adams.ugent.be/oauth/api/current_user/'
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ACCESS_TOKEN_URI = 'https://adams.ugent.be/oauth/oauth2/token/'
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AUTHORIZE_URI = 'https://adams.ugent.be/oauth/oauth2/authorize/'
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CLIENT_ID = 'tomtest'
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CLIENT_SECRET = 'blargh'
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logger = logging.getLogger(__file__)
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class OAuthException(Exception):
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pass
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def register(_):
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RESPONSE_TYPE = 'code'
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REDIRECT_URI = 'http://localhost:8000/login/zeus/authorized'
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return redirect(f'{AUTHORIZE_URI}?response_type={RESPONSE_TYPE}&client_id={CLIENT_ID}&redirect_uri={REDIRECT_URI}')
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def register_callback(req: HttpRequest):
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code = req.GET['code']
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response = requests.post(ACCESS_TOKEN_URI, data={'code': code,
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'grant_type': 'authorization_code',
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'client_id': CLIENT_ID,
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'client_secret': CLIENT_SECRET,
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'redirect_uri': 'http://localhost:8000/login/zeus/authorized'})
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try:
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if response.status_code == 200:
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json: dict = response.json()
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# TODO: maybe later do something with the refresh token.
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user: dict = user_info(json['access_token'])
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if 'username' not in user.keys() or 'id' not in user.keys():
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raise OAuthException(f'username and id are expected values: {user}')
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else:
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logger.debug(f'Succesfully authenticated user: {user["username"]} with id: {user["id"]}')
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validated_user = validate_user(user['zeus_id'], user['username'])
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login(req, validated_user)
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redirect('/')
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else:
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raise OAuthException(f'Status code not 200, response: {response.json()}')
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except OAuthException as e:
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logger.error(e)
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return register('')
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def validate_user(zeus_id, username) -> CustomUser:
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user = CustomUser.objects.get(zeus_id=zeus_id)
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if user is None:
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return CustomUser.objects.create_user(zeus_id, username)
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user.username = username
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user.save()
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return user
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def user_info(access_token):
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r = requests.get(USER_API_URI, headers={'Authorization': f'Bearer {access_token}'})
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return r.json()
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