Source code for privacyidea.lib.eventhandler.federationhandler

# -*- coding: utf-8 -*-
#
#  2017-08-23 Cornelius Kölbel <cornelius.koelbel@netknights.it>
#             Initial federation handler
#
# License:  AGPLv3
# (c) 2017. Cornelius Kölbel
#
# This code is free software; you can redistribute it and/or
# modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
# License as published by the Free Software Foundation; either
# version 3 of the License, or any later version.
#
# This code is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU AFFERO GENERAL PUBLIC LICENSE for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#
__doc__ = """This is the event handler module for privacyIDEA federations.
Requests can be forwarded to other privacyIDEA servers.
"""
from privacyidea.lib.eventhandler.base import BaseEventHandler
from privacyidea.lib.privacyideaserver import (get_privacyideaservers,
                                               get_privacyideaserver)
from privacyidea.lib import _
import json
import logging
import requests
from flask import current_app


log = logging.getLogger(__name__)


[docs]class ACTION_TYPE(object): """ Allowed actions """ FORWARD = "forward"
[docs]class FederationEventHandler(BaseEventHandler): """ An Eventhandler needs to return a list of actions, which it can handle. It also returns a list of allowed action and conditions It returns an identifier, which can be used in the eventhandling definitions """ identifier = "Federation" description = "This event handler can forward the request to other " \ "privacyIDEA servers" # TODO: Do we need to change the federation handler this way, that it does only pre-handling? @property def actions(cls): """ This method returns a dictionary of allowed actions and possible options in this handler module. :return: dict with actions """ pi_servers = [x.config.identifier for x in get_privacyideaservers()] actions = {ACTION_TYPE.FORWARD: {"privacyIDEA": {"type": "str", "required": True, "value": pi_servers, "description": _("The remote/child privacyIDEA " "Server.") }, "realm": {"type": "str", "description": _("Change the realm name to a " "realm on the child privacyIDEA " "system.") }, "resolver": {"type": "str", "description": _("Change the resolver name to a " "resolver on the child " "privacyIDEA system.") }, "forward_client_ip": {"type": "bool", "description": _("Forward the client IP to the " "child privacyIDEA server. " "Otherwise this server will " "be the client.") }, "forward_authorization_token": {"type": "bool", "description": _("Forward the authorization header. " "This allows to also forward request like " "token- and system-requests.") } } } return actions
[docs] def do(self, action, options=None): """ This method executes the defined action in the given event. :param action: :param options: Contains the flask parameters g, request, response and the handler_def configuration :type options: dict :return: """ g = options.get("g") request = options.get("request") handler_def = options.get("handler_def") handler_options = handler_def.get("options", {}) if action == ACTION_TYPE.FORWARD: server_def = handler_options.get("privacyIDEA") pi_server = get_privacyideaserver(server_def) # the new url is the configured server url and the original path url = pi_server.config.url + request.path # We use the original method method = request.method tls = pi_server.config.tls # We also transfer the original payload data = request.all_data if handler_options.get("forward_client_ip"): data["client"] = g.client_ip if handler_options.get("realm"): data["realm"] = handler_options.get("realm") if handler_options.get("resolver"): data["resolver"] = handler_options.get("resolver") log.info(u"Sending {0} request to {1!r}".format(method, url)) requestor = None params = None headers = {} # We need to pass an authorization header if we forward administrative requests if handler_options.get("forward_authorization_token"): auth_token = request.headers.get('PI-Authorization') if not auth_token: auth_token = request.headers.get('Authorization') headers["PI-Authorization"] = auth_token if method.upper() == "GET": params = data data = None requestor = requests.get elif method.upper() == "POST": requestor = requests.post elif method.upper() == "DELETE": requestor = requests.delete if requestor: r = requestor(url, params=params, data=data, headers=headers, verify=tls) # convert requests Response to werkzeug Response response_dict = json.loads(r.text) if "detail" in response_dict: detail = response_dict.setdefault("detail", {}) # In case of exceptions we may not have a detail detail["origin"] = url # We will modify the response! # We can not use flask.jsonify(response_dict) here, since we # would work outside of application context! options["response"] = current_app.response_class(json.dumps(response_dict), mimetype="application/json") options["response"].status_code = r.status_code else: log.warning(u"Unsupported method: {0!r}".format(method)) return True