mirror of https://github.com/alerta/alerta.git
100 lines
4.1 KiB
Python
100 lines
4.1 KiB
Python
import requests
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from flask import current_app, jsonify, request
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from flask_cors import cross_origin
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from alerta.auth.utils import create_token, get_customers, not_authorized
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from alerta.exceptions import ApiError
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from alerta.models.permission import Permission
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from alerta.models.user import User
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from alerta.utils.audit import auth_audit_trail
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from . import auth
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@auth.route('/auth/github', methods=['OPTIONS', 'POST'])
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@cross_origin(supports_credentials=True)
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def github():
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if current_app.config['GITHUB_URL'] == 'https://github.com':
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token_endpoint = 'https://github.com/login/oauth/access_token'
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github_api_url = 'https://api.github.com'
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else:
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token_endpoint = current_app.config['GITHUB_URL'] + '/login/oauth/access_token'
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github_api_url = current_app.config['GITHUB_URL'] + '/api/v3'
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client_lookup = dict(zip(
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current_app.config['OAUTH2_CLIENT_ID'].split(','),
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current_app.config['OAUTH2_CLIENT_SECRET'].split(',')
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))
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client_secret = client_lookup.get(request.json['clientId'], None)
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data = {
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'grant_type': 'authorization_code',
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'code': request.json['code'],
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'redirect_uri': request.json['redirectUri'],
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'client_id': request.json['clientId'],
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'client_secret': client_secret,
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}
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r = requests.post(token_endpoint, data, headers={'Accept': 'application/json'})
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token = r.json()
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try:
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headers = {'Authorization': f"token {token['access_token']}"}
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r = requests.get(github_api_url + '/user', headers=headers)
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profile = r.json()
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except Exception:
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raise ApiError('No access token in OpenID Connect token response.')
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r = requests.get(github_api_url + '/user/teams', headers=headers) # list public and private Github orgs
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profile['teams'] = [f"{t['organization']['login']}/{t['slug']}" for t in r.json()]
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r = requests.get(github_api_url + '/user/orgs', headers=headers) # list public and private Github orgs
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profile['organizations'] = [o['login'] for o in r.json()]
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subject = str(profile['id'])
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name = profile['name']
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username = '@' + profile['login']
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email = profile['email']
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email_verified = bool(email)
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picture = profile['avatar_url']
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role_claim = current_app.config['GITHUB_ROLE_CLAIM']
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group_claim = current_app.config['GITHUB_GROUP_CLAIM']
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custom_claims = {
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role_claim: profile.get(role_claim, []),
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group_claim: profile.get(group_claim, []),
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}
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login = username or email
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if not login:
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raise ApiError("Must allow access to GitHub user profile information: 'login' or 'email'", 400)
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user = User.find_by_id(id=subject)
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if not user:
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user = User(id=subject, name=name, login=login, password='', email=email,
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roles=current_app.config['USER_ROLES'], text='', email_verified=email_verified)
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user.create()
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else:
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user.update(login=login, email=email)
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roles = custom_claims[role_claim] + user.roles
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groups = custom_claims[group_claim]
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if user.status != 'active':
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raise ApiError(f'User {login} is not active', 403)
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if not_authorized('ALLOWED_GITHUB_ORGS', profile['organizations']) or not_authorized('ALLOWED_EMAIL_DOMAINS', groups=[user.domain]):
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raise ApiError(f'User {login} is not authorized', 403)
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user.update_last_login()
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scopes = Permission.lookup(login, roles=roles)
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customers = get_customers(login, groups=groups + ([user.domain] if user.domain else []))
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auth_audit_trail.send(current_app._get_current_object(), event='github-login', message='user login via GitHub',
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user=login, customers=customers, scopes=scopes, roles=user.roles, **custom_claims,
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resource_id=subject, type='user', request=request)
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token = create_token(user_id=subject, name=name, login=login, provider='github',
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customers=customers, scopes=scopes, roles=user.roles, groups=profile['teams'], orgs=profile['organizations'],
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email=email, email_verified=email_verified, picture=picture)
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return jsonify(token=token.tokenize())
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