hswaw/lib: add flask_spaceauth
Change-Id: I3bb47bb65e739eaf27f54c07f03df18e79b398e0
diff --git a/hswaw/lib/flask_spaceauth/spaceauth/__init__.py b/hswaw/lib/flask_spaceauth/spaceauth/__init__.py
new file mode 100644
index 0000000..6452307
--- /dev/null
+++ b/hswaw/lib/flask_spaceauth/spaceauth/__init__.py
@@ -0,0 +1,84 @@
+from flask import Blueprint, request, url_for, session, redirect, abort, flash
+from flask_oauthlib.client import OAuth, OAuthException
+from flask_login import LoginManager, login_user, logout_user, current_user, login_required, UserMixin
+
+from .caps import cap_required
+
+
+class SpaceAuth(LoginManager):
+ def __init__(self, app=None, *args, **kwargs):
+ self.oauth = OAuth()
+ self.remote = self.oauth.remote_app(
+ 'spaceauth',
+ base_url='https://sso.hackerspace.pl/api/',
+ access_token_url='https://sso.hackerspace.pl/oauth/token',
+ authorize_url='https://sso.hackerspace.pl/oauth/authorize',
+ request_token_params={'scope': 'profile:read'},
+ app_key='SPACEAUTH')
+ self.remote.tokengetter(self.tokengetter)
+
+ bp = Blueprint('spaceauth', __name__)
+ bp.add_url_rule('/login', 'login', self.login_view_handler)
+ bp.add_url_rule('/logout', 'logout', self.logout_view_handler)
+ bp.add_url_rule('/callback', 'callback', self.callback_view_handler)
+ self.blueprint = bp
+
+ super(SpaceAuth, self).__init__()
+ self.refresh_view = 'spaceauth.login'
+ self.login_view = 'spaceauth.login'
+ self.user_loader(self.user_loader_handler)
+
+ if app:
+ self.init_app(app, *args, **kwargs)
+
+ def init_app(self, app, url_prefix='/oauth'):
+ self.oauth.init_app(app)
+ super(SpaceAuth, self).init_app(app)
+ app.register_blueprint(self.blueprint, url_prefix=url_prefix)
+
+ @app.errorhandler(OAuthException)
+ def errorhandler(err):
+ flash('OAuth error occured', 'error')
+ return redirect('/')
+
+ def login_view_handler(self):
+ session['spaceauth_next'] = request.args.get('next') or request.referrer
+ return self.remote.authorize(
+ callback=url_for('spaceauth.callback', _external=True)
+ )
+
+ def logout_view_handler(self):
+ # TODO revoke token
+ session.pop('spaceauth_token', None)
+ session.pop('spaceauth_next', None)
+ logout_user()
+ return redirect('/')
+
+ def callback_view_handler(self):
+ resp = self.remote.authorized_response()
+ if resp is None:
+ raise OAuthException(
+ 'Access denied', type=request.args.get('error'))
+
+ # TODO encrypt token...?
+ session['spaceauth_token'] = resp['access_token']
+ profile = self.remote.get('profile').data
+
+ login_user(self.user_loader_handler(profile['username'], profile))
+ return redirect(session.pop('spaceauth_next', None) or '/')
+
+ def tokengetter(self):
+ return (session.get('spaceauth_token'), '')
+
+ def user_loader_handler(self, uid, profile=None):
+ """
+ Default user loader just to differentiate authenticated user from
+ anonymous.
+ """
+
+ user = UserMixin()
+ user.id = uid
+ return user
+
+ def user_profile(self):
+ return self.remote.get('profile').data