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