Ozwillo » Modules CKAN Ozwillo

import logging

import ckan.plugins as plugins

import ckan.plugins.toolkit as toolkit

from ckan.common import session, c, request, response

from ckan import model

import ckan.lib.base as base

from pylons import config

import conf

from oidc import create_client

plugin_config_prefix = 'ckanext.ozwillo_pyoidc.'

log = logging.getLogger(__name__)

plugin_controller = __name__ + ':OpenidController'

_CLIENTS = {}

class Clients(object):

    @classmethod

    def get(cls, g):

        global _CLIENTS

        if g.id in _CLIENTS:

            return _CLIENTS.get(g.id)

        client = cls().get_client(g)

        _CLIENTS.update({g.id: client})

        return client

    def get_client(self, g):

        params = conf.CLIENT.copy()

        params['client_registration'].update({

            'client_id': g._extras['client_id'].value,

            'client_secret': g._extras['client_secret'].value,

            'redirect_uris': [toolkit.url_for(host=request.host,

                                              controller=plugin_controller,

                                              action='callback',

                                              id=g.name,

                                              qualified=True)]

        })

        return create_client(**params)

class OzwilloPyoidcPlugin(plugins.SingletonPlugin):

    plugins.implements(plugins.IConfigurer)

    plugins.implements(plugins.IRoutes)

    plugins.implements(plugins.IAuthenticator, inherit=True)

    def before_map(self, map):

        map.connect('/organization/{id:.*}/sso',

                    controller=plugin_controller,

                    action='sso')

        map.connect('/organization/{id:.*}/callback',

                    controller=plugin_controller,

                    action='callback')

        map.connect('/logout', controller=plugin_controller,

                    action='logout')

        map.connect('/user/slo',

                    controller=plugin_controller,

                    action='slo',

                    conditions={'method': ['POST']})

        map.redirect('/organization/{id:.*}/logout', '/user/_logout')

        return map

    def after_map(self, map):

        return map

    def identify(self):

        user = session.get('user')

        if user and not toolkit.c.userobj:

            userobj = model.User.get(user)

            toolkit.c.user = userobj.name

            toolkit.c.userobj = userobj

    def login(self):

        for cookie in request.cookies:

            value = request.cookies.get(cookie)

            response.set_cookie(cookie, value, secure=True, httponly=True)

        if 'organization_id' in session:

            g = model.Group.get(session['organization_id'])

            client = Clients.get(g)

            url, ht_args = client.create_authn_request(session, conf.ACR_VALUES)

            if ht_args:

                toolkit.request.headers.update(ht_args)

            toolkit.redirect_to(url)

        else:

            toolkit.redirect_to('/')

    def logout(self):

        log.info('Logging out user: %s' % session['user'])

        session['user'] = None

        session.save()

        g = model.Group.get(session['organization_id'])

        if g:

            org_url = toolkit.url_for(host=request.host,

                                      controller='organization',

                                      action='read',

                                      id=g.name,

                                      qualified=True)

            toolkit.redirect_to(str(org_url))

        else:

            toolkit.redirect_to('/')

    def update_config(self, config_):

        toolkit.add_template_directory(config_, 'templates')

        toolkit.add_public_directory(config_, 'public')

        toolkit.add_resource('fanstatic', 'ozwillo_pyoidc')

class OpenidController(base.BaseController):

    def sso(self, id):

        log.info('SSO for organization "%s"' % id)

        session['organization_id'] = id

        session.save()

        log.info('redirecting to login page')

        login_url = toolkit.url_for(host=request.host,

                                    controller='user',

                                    action='login',

                                    qualified=True)

        toolkit.redirect_to(login_url)

    def callback(self):

        g = model.Group.get(session['organization_id'])

        client = Clients.get(g)

        userinfo = client.callback(request.GET)

        log.info('Received userinfo: %s' % userinfo)

        userobj = model.User.get(userinfo['sub'])

        if userobj:

            if 'given_name' in userinfo:

                userobj.fullname = userinfo['given_name']

            if 'family_name' in userinfo:

                userobj.fullname += userinfo['family_name']

            userobj.save()

            session['user'] = userobj.id

            session.save()

        org_url = toolkit.url_for(host=request.host,

                                  controller="organization",

                                  action='read',

                                  id=g.name,

                                  locale=userinfo.get('locale'),

                                  qualified=True)

        toolkit.redirect_to(str(org_url))

    def logout(self):

        toolkit.c.slo_url = toolkit.url_for(host=request.host,

                                            controller=plugin_controller,

                                            action="slo",

                                            qualified=True)

        return base.render('logout_confirm.html')

    def slo(self):

        """

        Revokes the delivered access token. Logs out the user

        """

        g = model.Group.get(session['organization_id'])

        org_url = toolkit.url_for(host=request.host,

                                  controller='organization',

                                  action='read',

                                  id=g.name,

                                  qualified=True)

        org_url = str(org_url)

        if toolkit.c.user and request.method == 'POST':

            client = Clients.get(g)

            logout_url = client.end_session_endpoint

            redirect_uri = org_url + '/logout'

            # revoke the access token

            headers = {'Content-Type': 'application/x-www-form-urlencoded'}

            data = 'token=' + client.access_token

            data += '&token_type_hint=access_token'

            client.http_request(client.revocation_endpoint, 'POST',

                                data=data, headers=headers)

            # redirect to IDP logout

            logout_url += '?id_token_hint=%s&' % client.id_token

            logout_url += 'post_logout_redirect_uri=%s' % redirect_uri

            toolkit.redirect_to(logout_url)

        toolkit.redirect_to(org_url)