Produits Entr'ouvert » Hobo

# 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 = {'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)