ScoDoc-PE/flask_cas/__init__.py

107 lines
3.3 KiB
Python

"""
flask_cas.__init__
"""
import flask
from flask import current_app
# Find the stack on which we want to store the database connection.
# Starting with Flask 0.9, the _app_ctx_stack is the correct one,
# before that we need to use the _request_ctx_stack.
try:
from flask import _app_ctx_stack as stack
except ImportError:
from flask import _request_ctx_stack as stack
from . import routing
from functools import wraps
class CAS(object):
"""
Required Configs:
|Key |
|----------------|
|CAS_SERVER |
|CAS_AFTER_LOGIN |
Optional Configs:
|Key | Default |
|---------------------------|-----------------------|
|CAS_TOKEN_SESSION_KEY | _CAS_TOKEN |
|CAS_USERNAME_SESSION_KEY | CAS_USERNAME |
|CAS_ATTRIBUTES_SESSION_KEY | CAS_ATTRIBUTES |
|CAS_LOGIN_ROUTE | '/cas' |
|CAS_LOGOUT_ROUTE | '/cas/logout' |
|CAS_VALIDATE_ROUTE | '/cas/serviceValidate'|
|CAS_AFTER_LOGOUT | None |
"""
def __init__(self, app=None, url_prefix=None):
self._app = app
if app is not None:
self.init_app(app, url_prefix)
def init_app(self, app, url_prefix=None):
# Configuration defaults
app.config.setdefault('CAS_TOKEN_SESSION_KEY', '_CAS_TOKEN')
app.config.setdefault('CAS_USERNAME_SESSION_KEY', 'CAS_USERNAME')
app.config.setdefault('CAS_ATTRIBUTES_SESSION_KEY', 'CAS_ATTRIBUTES')
app.config.setdefault('CAS_LOGIN_ROUTE', '/cas')
app.config.setdefault('CAS_LOGOUT_ROUTE', '/cas/logout')
app.config.setdefault('CAS_VALIDATE_ROUTE', '/cas/serviceValidate')
# Requires CAS 2.0
app.config.setdefault('CAS_AFTER_LOGOUT', None)
# Register Blueprint
app.register_blueprint(routing.blueprint, url_prefix=url_prefix)
# Use the newstyle teardown_appcontext if it's available,
# otherwise fall back to the request context
if hasattr(app, 'teardown_appcontext'):
app.teardown_appcontext(self.teardown)
else:
app.teardown_request(self.teardown)
def teardown(self, exception):
ctx = stack.top
@property
def app(self):
return self._app or current_app
@property
def username(self):
return flask.session.get(
self.app.config['CAS_USERNAME_SESSION_KEY'], None)
@property
def attributes(self):
return flask.session.get(
self.app.config['CAS_ATTRIBUTES_SESSION_KEY'], None)
@property
def token(self):
return flask.session.get(
self.app.config['CAS_TOKEN_SESSION_KEY'], None)
def login():
return flask.redirect(flask.url_for('cas.login', _external=True))
def logout():
return flask.redirect(flask.url_for('cas.logout', _external=True))
def login_required(function):
@wraps(function)
def wrap(*args, **kwargs):
if 'CAS_USERNAME' not in flask.session:
flask.session['CAS_AFTER_LOGIN_SESSION_URL'] = (
flask.request.script_root +
flask.request.full_path
)
return login()
else:
return function(*args, **kwargs)
return wrap