hobo/hobo/applications/utils.py

68 lines
2.4 KiB
Python

# hobo - portal to configure and deploy applications
# Copyright (C) 2015-2022 Entr'ouvert
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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/>.
import urllib
import requests
from django.conf import settings
from django.utils.http import urlencode
from requests import Response
from requests import Session as RequestsSession
from requests.auth import AuthBase
from hobo.signature import sign_url
class PublikSignature(AuthBase):
def __init__(self, secret):
self.secret = secret
def __call__(self, request):
request.url = sign_url(request.url, self.secret)
return request
def get_known_service_for_url(url):
netloc = urllib.parse.urlparse(url).netloc
for services in settings.KNOWN_SERVICES.values():
for service in services.values():
remote_url = service.get('url')
if urllib.parse.urlparse(remote_url).netloc == netloc:
return service
return None
class Requests(RequestsSession):
def request(self, method, url, **kwargs):
remote_service = get_known_service_for_url(url)
kwargs['auth'] = PublikSignature(remote_service.get('secret'))
# only keeps the path (URI) in url parameter, scheme and netloc are
# in remote_service
scheme, netloc, path, params, query, fragment = urllib.parse.urlparse(url)
url = urllib.parse.urlunparse(('', '', path, params, query, fragment))
query_params = dict(urllib.parse.parse_qsl(query))
query_params['orig'] = remote_service.get('orig')
remote_service_base_url = remote_service.get('url')
scheme, netloc, dummy, params, old_query, fragment = urllib.parse.urlparse(remote_service_base_url)
query = urlencode(query_params)
url = urllib.parse.urlunparse((scheme, netloc, path, params, query, fragment))
return super().request(method, url, **kwargs)