Authentication

From e9c908ebc09ccc050bd09692c5413124a8c3c06e Mon Sep 17 00:00:00 2001 From: David Baker Date: Wed, 1 Apr 2015 15:05:30 +0100 Subject: Completely replace fallback auth for C/S V2: * Now only the auth part goes to fallback, not the whole operation * Auth fallback is a normal API endpoint, not a static page * Params like the recaptcha pubkey can just live in the config Involves a little engineering on JsonResource so its servlets aren't always forced to return JSON. I should document this more, in fact I'll do that now. --- synapse/rest/client/v2_alpha/__init__.py | 4 +- synapse/rest/client/v2_alpha/auth.py | 189 +++++++++++++++++++++++++++++++ synapse/rest/client/v2_alpha/register.py | 2 +- 3 files changed, 193 insertions(+), 2 deletions(-) create mode 100644 synapse/rest/client/v2_alpha/auth.py (limited to 'synapse/rest/client') diff --git a/synapse/rest/client/v2_alpha/__init__.py b/synapse/rest/client/v2_alpha/__init__.py index 98189ead26..86e4bc729e 100644 --- a/synapse/rest/client/v2_alpha/__init__.py +++ b/synapse/rest/client/v2_alpha/__init__.py @@ -17,7 +17,8 @@ from . import ( sync, filter, password, - register + register, + auth ) from synapse.http.server import JsonResource @@ -36,3 +37,4 @@ class ClientV2AlphaRestResource(JsonResource): filter.register_servlets(hs, client_resource) password.register_servlets(hs, client_resource) register.register_servlets(hs, client_resource) + auth.register_servlets(hs, client_resource) diff --git a/synapse/rest/client/v2_alpha/auth.py b/synapse/rest/client/v2_alpha/auth.py new file mode 100644 index 0000000000..7a518e226f --- /dev/null +++ b/synapse/rest/client/v2_alpha/auth.py @@ -0,0 +1,189 @@ +# -*- coding: utf-8 -*- +# Copyright 2015 OpenMarket Ltd +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +from twisted.internet import defer + +from synapse.api.constants import LoginType +from synapse.api.errors import SynapseError +from synapse.api.urls import CLIENT_V2_ALPHA_PREFIX +from synapse.http.servlet import RestServlet + +from ._base import client_v2_pattern + +import logging + + +logger = logging.getLogger(__name__) + +RECAPTCHA_TEMPLATE = """ + + +Authentication + + + + + + + + + + +""" + +SUCCESS_TEMPLATE = """ + + +Success! + + + + + +

Thank you

You may now close this window and return to the application

+ + +""" + +class AuthRestServlet(RestServlet): + """ + Handles Client / Server API authentication in any situations where it + cannot be handled in the normal flow (with requests to the same endpoint). + Current use is for web fallback auth. + """ + PATTERN = client_v2_pattern("/auth/(?P[\w\.]*)/fallback/web") + + def __init__(self, hs): + super(AuthRestServlet, self).__init__() + self.hs = hs + self.auth = hs.get_auth() + self.auth_handler = hs.get_handlers().auth_handler + self.registration_handler = hs.get_handlers().registration_handler + + @defer.inlineCallbacks + def on_GET(self, request, stagetype): + yield + if stagetype == LoginType.RECAPTCHA: + if ('session' not in request.args or + len(request.args['session']) == 0): + raise SynapseError(400, "No session supplied") + + session = request.args["session"][0] + + html = RECAPTCHA_TEMPLATE % { + 'session': session, + 'myurl': "%s/auth/%s/fallback/web" % ( + CLIENT_V2_ALPHA_PREFIX, LoginType.RECAPTCHA + ), + 'sitekey': self.hs.config.recaptcha_public_key, + } + html_bytes = html.encode("utf8") + request.setResponseCode(200) + request.setHeader(b"Content-Type", b"text/html; charset=utf-8") + request.setHeader(b"Server", self.hs.version_string) + request.setHeader(b"Content-Length", b"%d" % (len(html_bytes),)) + + request.write(html_bytes) + request.finish() + defer.returnValue(None) + else: + raise SynapseError(404, "Unknown auth stage type") + + @defer.inlineCallbacks + def on_POST(self, request, stagetype): + yield + if stagetype == "m.login.recaptcha": + if ('g-recaptcha-response' not in request.args or + len(request.args['g-recaptcha-response'])) == 0: + raise SynapseError(400, "No captcha response supplied") + if ('session' not in request.args or + len(request.args['session'])) == 0: + raise SynapseError(400, "No session supplied") + + session = request.args['session'][0] + + authdict = { + 'response': request.args['g-recaptcha-response'][0], + 'session': session, + } + + success = yield self.auth_handler.add_oob_auth( + LoginType.RECAPTCHA, + authdict, + self.hs.get_ip_from_request(request) + ) + + if success: + html = SUCCESS_TEMPLATE + else: + html = RECAPTCHA_TEMPLATE % { + 'session': session, + 'myurl': "%s/auth/%s/fallback/web" % ( + CLIENT_V2_ALPHA_PREFIX, LoginType.RECAPTCHA + ), + 'sitekey': self.hs.config.recaptcha_public_key, + } + html_bytes = html.encode("utf8") + request.setResponseCode(200) + request.setHeader(b"Content-Type", b"text/html; charset=utf-8") + request.setHeader(b"Server", self.hs.version_string) + request.setHeader(b"Content-Length", b"%d" % (len(html_bytes),)) + + request.write(html_bytes) + request.finish() + + defer.returnValue(None) + else: + raise SynapseError(404, "Unknown auth stage type") + + def on_OPTIONS(self, _): + return 200, {} + + +def register_servlets(hs, http_server): + AuthRestServlet(hs).register(http_server) diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py index 4a53e03743..537918ea27 100644 --- a/synapse/rest/client/v2_alpha/register.py +++ b/synapse/rest/client/v2_alpha/register.py @@ -45,7 +45,7 @@ class RegisterRestServlet(RestServlet): [LoginType.RECAPTCHA], [LoginType.EMAIL_IDENTITY, LoginType.RECAPTCHA], [LoginType.APPLICATION_SERVICE] - ], body) + ], body, self.hs.get_ip_from_request(request)) if not authed: defer.returnValue((401, result)) -- cgit 1.4.1