app_gw(minor): remove current implementation
This commit is contained in:
Langhammer, Jens
@ -179,8 +179,8 @@
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<span class="card-pf-aggregate-status-notification">
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<a href="#">
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{% if worker_count < 1%}
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<span class="pficon-error-circle-o" data-toggle="tooltip" data-placement="right"
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title="{% trans 'No workers connected. Policies will not work and you may expect other issues.' %}"></span> {{ worker_count }}
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<span class="pficon-warning-triangle-o" data-toggle="tooltip" data-placement="right"
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title="{% trans 'No workers connected.' %}"></span> {{ worker_count }}
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{% else %}
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<span class="pficon pficon-ok"></span>{{ worker_count }}
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{% endif %}
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BIN
passbook/app_gw/.DS_Store
vendored
BIN
passbook/app_gw/.DS_Store
vendored
Binary file not shown.
@ -1,6 +1,4 @@
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"""passbook Application Security Gateway app"""
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from importlib import import_module
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from django.apps import AppConfig
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@ -10,7 +8,4 @@ class PassbookApplicationApplicationGatewayConfig(AppConfig):
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name = 'passbook.app_gw'
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label = 'passbook_app_gw'
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verbose_name = 'passbook Application Security Gateway'
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mountpoint = 'app_gw/'
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def ready(self):
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import_module('passbook.app_gw.signals')
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# mountpoint = 'app_gw/'
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@ -1,13 +0,0 @@
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"""
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ASGI entrypoint. Configures Django and then runs the application
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defined in the ASGI_APPLICATION setting.
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"""
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import os
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import django
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from channels.routing import get_default_application
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os.environ.setdefault("DJANGO_SETTINGS_MODULE", "passbook.root.settings")
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django.setup()
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application = get_default_application()
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@ -1,29 +0,0 @@
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"""passbook app_gw webserver management command"""
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from daphne.cli import CommandLineInterface
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from django.core.management.base import BaseCommand
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from django.utils import autoreload
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from structlog import get_logger
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from passbook.lib.config import CONFIG
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LOGGER = get_logger(__name__)
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class Command(BaseCommand):
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"""Run Daphne Webserver for app_gw"""
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def handle(self, *args, **options):
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"""passbook daphne server"""
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autoreload.run_with_reloader(self.daphne_server)
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def daphne_server(self):
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"""Run daphne server within autoreload"""
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autoreload.raise_last_exception()
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CommandLineInterface().run([
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'-p', str(CONFIG.y('app_gw.port', 8000)),
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'-b', CONFIG.y('app_gw.listen', '0.0.0.0'), # nosec
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'--access-log', '/dev/null',
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'--application-close-timeout', '500',
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'passbook.app_gw.asgi:application'
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])
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@ -1,33 +0,0 @@
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"""passbook app_gw middleware"""
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from django.views.generic import RedirectView
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from passbook.app_gw.proxy.handler import RequestHandler
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from passbook.lib.config import CONFIG
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class ApplicationGatewayMiddleware:
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"""Check if request should be proxied or handeled normally"""
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_app_gw_cache = {}
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def __init__(self, get_response):
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self.get_response = get_response
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def __call__(self, request):
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# Rudimentary cache
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host_header = request.META.get('HTTP_HOST')
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if host_header not in self._app_gw_cache:
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self._app_gw_cache[host_header] = RequestHandler.find_app_gw_for_request(request)
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if self._app_gw_cache[host_header]:
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return self.dispatch(request, self._app_gw_cache[host_header])
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return self.get_response(request)
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def dispatch(self, request, app_gw):
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"""Build proxied request and pass to upstream"""
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handler = RequestHandler(app_gw, request)
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if not handler.check_permission():
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to_url = 'https://%s/?next=%s' % (CONFIG.y('domains')[0], request.get_full_path())
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return RedirectView.as_view(url=to_url)(request)
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return handler.get_response()
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@ -1,8 +0,0 @@
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"""Exception classes"""
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class ReverseProxyException(Exception):
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"""Base for revproxy exception"""
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class InvalidUpstream(ReverseProxyException):
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"""Invalid upstream set"""
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@ -1,233 +0,0 @@
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"""passbook app_gw request handler"""
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import mimetypes
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from random import SystemRandom
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from urllib.parse import urlparse
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import certifi
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import urllib3
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from django.core.cache import cache
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from django.utils.http import urlencode
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from structlog import get_logger
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from passbook.app_gw.models import ApplicationGatewayProvider
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from passbook.app_gw.proxy.exceptions import InvalidUpstream
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from passbook.app_gw.proxy.response import get_django_response
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from passbook.app_gw.proxy.rewrite import Rewriter
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from passbook.app_gw.proxy.utils import encode_items, normalize_request_headers
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from passbook.core.models import Application
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from passbook.policy.engine import PolicyEngine
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SESSION_UPSTREAM_KEY = 'passbook_app_gw_upstream'
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IGNORED_HOSTNAMES_KEY = 'passbook_app_gw_ignored'
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LOGGER = get_logger(__name__)
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QUOTE_SAFE = r'<.;>\(}*+|~=-$/_:^@)[{]&\'!,"`'
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ERRORS_MESSAGES = {
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'upstream-no-scheme': ("Upstream URL scheme must be either "
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"'http' or 'https' (%s).")
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}
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HTTP_NO_VERIFY = urllib3.PoolManager()
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HTTP = urllib3.PoolManager(
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cert_reqs='CERT_REQUIRED',
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ca_certs=certifi.where())
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IGNORED_HOSTS = cache.get(IGNORED_HOSTNAMES_KEY, [])
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POLICY_CACHE = {}
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class RequestHandler:
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"""Forward requests"""
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_parsed_url = None
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_request_headers = None
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def __init__(self, app_gw, request):
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self.app_gw = app_gw
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self.request = request
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if self.app_gw.pk not in POLICY_CACHE:
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POLICY_CACHE[self.app_gw.pk] = self.app_gw.application.policies.all()
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@staticmethod
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def find_app_gw_for_request(request):
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"""Check if a request should be proxied or forwarded to passbook"""
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# Check if hostname is in cached list of ignored hostnames
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# This saves us having to query the database on each request
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host_header = request.META.get('HTTP_HOST')
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if host_header in IGNORED_HOSTS:
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# LOGGER.debug("%s is ignored", host_header)
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return False
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# Look through all ApplicationGatewayProviders and check hostnames
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matches = ApplicationGatewayProvider.objects.filter(
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server_name__contains=[host_header],
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enabled=True)
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if not matches.exists():
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# Mo matching Providers found, add host header to ignored list
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IGNORED_HOSTS.append(host_header)
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cache.set(IGNORED_HOSTNAMES_KEY, IGNORED_HOSTS)
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# LOGGER.debug("Ignoring %s", host_header)
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return False
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# At this point we're certain there's a matching ApplicationGateway
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if len(matches) > 1:
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# This should never happen
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raise ValueError
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app_gw = matches.first()
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try:
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# Check if ApplicationGateway is associated with application
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getattr(app_gw, 'application')
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if app_gw:
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return app_gw
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except Application.DoesNotExist:
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pass
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# LOGGER.debug("ApplicationGateway not associated with Application")
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return True
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def _get_upstream(self):
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"""Choose random upstream and save in session"""
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if SESSION_UPSTREAM_KEY not in self.request.session:
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self.request.session[SESSION_UPSTREAM_KEY] = {}
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if self.app_gw.pk not in self.request.session[SESSION_UPSTREAM_KEY]:
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upstream_index = int(SystemRandom().random() * len(self.app_gw.upstream))
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self.request.session[SESSION_UPSTREAM_KEY][self.app_gw.pk] = upstream_index
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return self.app_gw.upstream[self.request.session[SESSION_UPSTREAM_KEY][self.app_gw.pk]]
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def get_upstream(self):
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"""Get upstream as parsed url"""
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upstream = self._get_upstream()
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self._parsed_url = urlparse(upstream)
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if self._parsed_url.scheme not in ('http', 'https'):
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raise InvalidUpstream(ERRORS_MESSAGES['upstream-no-scheme'] %
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upstream)
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return upstream
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def _format_path_to_redirect(self):
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# LOGGER.debug("Path before: %s", self.request.get_full_path())
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rewriter = Rewriter(self.app_gw, self.request)
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after = rewriter.build()
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# LOGGER.debug("Path after: %s", after)
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return after
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def get_proxy_request_headers(self):
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"""Get normalized headers for the upstream
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Gets all headers from the original request and normalizes them.
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Normalization occurs by removing the prefix ``HTTP_`` and
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replacing and ``_`` by ``-``. Example: ``HTTP_ACCEPT_ENCODING``
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becames ``Accept-Encoding``.
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.. versionadded:: 0.9.1
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:param request: The original HTTPRequest instance
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:returns: Normalized headers for the upstream
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"""
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return normalize_request_headers(self.request)
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def get_request_headers(self):
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"""Return request headers that will be sent to upstream.
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The header REMOTE_USER is set to the current user
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if AuthenticationMiddleware is enabled and
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the view's add_remote_user property is True.
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.. versionadded:: 0.9.8
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"""
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request_headers = self.get_proxy_request_headers()
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if not self.app_gw.authentication_header:
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return request_headers
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request_headers[self.app_gw.authentication_header] = self.request.user.get_username()
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# LOGGER.debug("%s set", self.app_gw.authentication_header)
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return request_headers
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def check_permission(self):
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"""Check if user is authenticated and has permission to access app"""
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if not hasattr(self.request, 'user'):
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return False
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if not self.request.user.is_authenticated:
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return False
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policy_engine = PolicyEngine(POLICY_CACHE[self.app_gw.pk])
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policy_engine.for_user(self.request.user).with_request(self.request).build()
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passing, _messages = policy_engine.result
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return passing
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def get_encoded_query_params(self):
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"""Return encoded query params to be used in proxied request"""
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get_data = encode_items(self.request.GET.lists())
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return urlencode(get_data)
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def _created_proxy_response(self, path):
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request_payload = self.request.body
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# LOGGER.debug("Request headers: %s", self._request_headers)
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request_url = self.get_upstream() + path
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# LOGGER.debug("Request URL: %s", request_url)
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if self.request.GET:
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request_url += '?' + self.get_encoded_query_params()
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# LOGGER.debug("Request URL: %s", request_url)
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http = HTTP
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if not self.app_gw.upstream_ssl_verification:
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http = HTTP_NO_VERIFY
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try:
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proxy_response = http.urlopen(self.request.method,
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request_url,
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redirect=False,
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retries=None,
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headers=self._request_headers,
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body=request_payload,
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decode_content=False,
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preload_content=False)
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# LOGGER.debug("Proxy response header: %s",
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# proxy_response.getheaders())
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except urllib3.exceptions.HTTPError as error:
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LOGGER.exception(error)
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raise
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return proxy_response
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def _replace_host_on_redirect_location(self, proxy_response):
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location = proxy_response.headers.get('Location')
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if location:
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if self.request.is_secure():
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scheme = 'https://'
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else:
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scheme = 'http://'
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request_host = scheme + self.request.META.get('HTTP_HOST')
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upstream_host_http = 'http://' + self._parsed_url.netloc
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upstream_host_https = 'https://' + self._parsed_url.netloc
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location = location.replace(upstream_host_http, request_host)
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location = location.replace(upstream_host_https, request_host)
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proxy_response.headers['Location'] = location
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# LOGGER.debug("Proxy response LOCATION: %s",
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# proxy_response.headers['Location'])
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def _set_content_type(self, proxy_response):
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content_type = proxy_response.headers.get('Content-Type')
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if not content_type:
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content_type = (mimetypes.guess_type(self.request.path)
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[0] or self.app_gw.default_content_type)
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proxy_response.headers['Content-Type'] = content_type
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# LOGGER.debug("Proxy response CONTENT-TYPE: %s",
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# proxy_response.headers['Content-Type'])
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def get_response(self):
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"""Pass request to upstream and return response"""
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self._request_headers = self.get_request_headers()
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path = self._format_path_to_redirect()
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proxy_response = self._created_proxy_response(path)
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self._replace_host_on_redirect_location(proxy_response)
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self._set_content_type(proxy_response)
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response = get_django_response(proxy_response, strict_cookies=False)
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# If response has a 'Location' header, we rewrite that location as well
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if 'Location' in response:
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LOGGER.debug("Rewriting Location header")
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for server_name in self.app_gw.server_name:
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response['Location'] = response['Location'].replace(
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self._parsed_url.hostname, server_name)
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LOGGER.debug(response['Location'])
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# LOGGER.debug("RESPONSE RETURNED: %s", response)
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return response
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@ -1,62 +0,0 @@
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"""response functions from django-revproxy"""
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from django.http import HttpResponse, StreamingHttpResponse
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from structlog import get_logger
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from passbook.app_gw.proxy.utils import (cookie_from_string,
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set_response_headers, should_stream)
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#: Default number of bytes that are going to be read in a file lecture
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DEFAULT_AMT = 2 ** 16
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logger = get_logger(__name__)
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def get_django_response(proxy_response, strict_cookies=False):
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"""This method is used to create an appropriate response based on the
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Content-Length of the proxy_response. If the content is bigger than
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MIN_STREAMING_LENGTH, which is found on utils.py,
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than django.http.StreamingHttpResponse will be created,
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else a django.http.HTTPResponse will be created instead
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:param proxy_response: An Instance of urllib3.response.HTTPResponse that
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will create an appropriate response
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:param strict_cookies: Whether to only accept RFC-compliant cookies
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:returns: Returns an appropriate response based on the proxy_response
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content-length
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"""
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status = proxy_response.status
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headers = proxy_response.headers
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logger.debug('Proxy response headers: %s', headers)
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content_type = headers.get('Content-Type')
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logger.debug('Content-Type: %s', content_type)
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if should_stream(proxy_response):
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logger.info('Content-Length is bigger than %s', DEFAULT_AMT)
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response = StreamingHttpResponse(proxy_response.stream(DEFAULT_AMT),
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status=status,
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content_type=content_type)
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else:
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content = proxy_response.data or b''
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response = HttpResponse(content, status=status,
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content_type=content_type)
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logger.info('Normalizing response headers')
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set_response_headers(response, headers)
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logger.debug('Response headers: %s', getattr(response, '_headers'))
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cookies = proxy_response.headers.getlist('set-cookie')
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logger.info('Checking for invalid cookies')
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for cookie_string in cookies:
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cookie_dict = cookie_from_string(cookie_string,
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strict_cookies=strict_cookies)
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# if cookie is invalid cookie_dict will be None
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if cookie_dict:
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response.set_cookie(**cookie_dict)
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logger.debug('Response cookies: %s', response.cookies)
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|
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return response
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@ -1,42 +0,0 @@
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"""passbook app_gw rewriter"""
|
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|
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from passbook.app_gw.models import RewriteRule
|
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|
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RULE_CACHE = {}
|
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|
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class Context:
|
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"""Empty class which we dynamically add attributes to"""
|
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|
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class Rewriter:
|
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"""Apply rewrites"""
|
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|
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__application = None
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__request = None
|
||||
|
||||
def __init__(self, application, request):
|
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self.__application = application
|
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self.__request = request
|
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if self.__application.pk not in RULE_CACHE:
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RULE_CACHE[self.__application.pk] = RewriteRule.objects.filter(
|
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provider__in=[self.__application])
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|
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def __build_context(self, matches):
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"""Build object with .0, .1, etc as groups and give access to request"""
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context = Context()
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for index, group_match in enumerate(matches.groups()):
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setattr(context, "g%d" % (index + 1), group_match)
|
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setattr(context, 'request', self.__request)
|
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return context
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||||
|
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def build(self):
|
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"""Run all rules over path and return final path"""
|
||||
path = self.__request.get_full_path()
|
||||
for rule in RULE_CACHE[self.__application.pk]:
|
||||
matches = rule.compiled_matcher.search(path)
|
||||
if not matches:
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||||
continue
|
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replace_context = self.__build_context(matches)
|
||||
path = rule.replacement.format(context=replace_context)
|
||||
if rule.halt:
|
||||
return path
|
||||
return path
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||||
@ -1,226 +0,0 @@
|
||||
"""Utils from django-revproxy, slightly adjusted"""
|
||||
import re
|
||||
from wsgiref.util import is_hop_by_hop
|
||||
|
||||
from structlog import get_logger
|
||||
|
||||
try:
|
||||
from http.cookies import SimpleCookie
|
||||
COOKIE_PREFIX = ''
|
||||
except ImportError:
|
||||
from Cookie import SimpleCookie
|
||||
COOKIE_PREFIX = 'Set-Cookie: '
|
||||
|
||||
|
||||
#: List containing string constant that are used to represent headers that can
|
||||
#: be ignored in the required_header function
|
||||
IGNORE_HEADERS = (
|
||||
'HTTP_ACCEPT_ENCODING', # We want content to be uncompressed so
|
||||
# we remove the Accept-Encoding from
|
||||
# original request
|
||||
'HTTP_HOST',
|
||||
'HTTP_REMOTE_USER',
|
||||
)
|
||||
|
||||
|
||||
# Default from HTTP RFC 2616
|
||||
# See: http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7.1
|
||||
#: Variable that represent the default charset used
|
||||
DEFAULT_CHARSET = 'latin-1'
|
||||
|
||||
#: List containing string constants that represents possible html content type
|
||||
HTML_CONTENT_TYPES = (
|
||||
'text/html',
|
||||
'application/xhtml+xml'
|
||||
)
|
||||
|
||||
#: Variable used to represent a minimal content size required for response
|
||||
#: to be turned into stream
|
||||
MIN_STREAMING_LENGTH = 4 * 1024 # 4KB
|
||||
|
||||
#: Regex used to find charset in a html content type
|
||||
_get_charset_re = re.compile(r';\s*charset=(?P<charset>[^\s;]+)', re.I)
|
||||
|
||||
|
||||
def is_html_content_type(content_type):
|
||||
"""Function used to verify if the parameter is a proper html content type
|
||||
|
||||
:param content_type: String variable that represent a content-type
|
||||
:returns: A boolean value stating if the content_type is a valid html
|
||||
content type
|
||||
"""
|
||||
for html_content_type in HTML_CONTENT_TYPES:
|
||||
if content_type.startswith(html_content_type):
|
||||
return True
|
||||
|
||||
return False
|
||||
|
||||
|
||||
def should_stream(proxy_response):
|
||||
"""Function to verify if the proxy_response must be converted into
|
||||
a stream.This will be done by checking the proxy_response content-length
|
||||
and verify if its length is bigger than one stipulated
|
||||
by MIN_STREAMING_LENGTH.
|
||||
|
||||
:param proxy_response: An Instance of urllib3.response.HTTPResponse
|
||||
:returns: A boolean stating if the proxy_response should
|
||||
be treated as a stream
|
||||
"""
|
||||
content_type = proxy_response.headers.get('Content-Type')
|
||||
|
||||
if is_html_content_type(content_type):
|
||||
return False
|
||||
|
||||
try:
|
||||
content_length = int(proxy_response.headers.get('Content-Length', 0))
|
||||
except ValueError:
|
||||
content_length = 0
|
||||
|
||||
if not content_length or content_length > MIN_STREAMING_LENGTH:
|
||||
return True
|
||||
|
||||
return False
|
||||
|
||||
|
||||
def get_charset(content_type):
|
||||
"""Function used to retrieve the charset from a content-type.If there is no
|
||||
charset in the content type then the charset defined on DEFAULT_CHARSET
|
||||
will be returned
|
||||
|
||||
:param content_type: A string containing a Content-Type header
|
||||
:returns: A string containing the charset
|
||||
"""
|
||||
if not content_type:
|
||||
return DEFAULT_CHARSET
|
||||
|
||||
matched = _get_charset_re.search(content_type)
|
||||
if matched:
|
||||
# Extract the charset and strip its double quotes
|
||||
return matched.group('charset').replace('"', '')
|
||||
return DEFAULT_CHARSET
|
||||
|
||||
|
||||
def required_header(header):
|
||||
"""Function that verify if the header parameter is a essential header
|
||||
|
||||
:param header: A string represented a header
|
||||
:returns: A boolean value that represent if the header is required
|
||||
"""
|
||||
if header in IGNORE_HEADERS:
|
||||
return False
|
||||
|
||||
if header.startswith('HTTP_') or header == 'CONTENT_TYPE':
|
||||
return True
|
||||
|
||||
return False
|
||||
|
||||
|
||||
def set_response_headers(response, response_headers):
|
||||
"""Set response's header"""
|
||||
for header, value in response_headers.items():
|
||||
if is_hop_by_hop(header) or header.lower() == 'set-cookie':
|
||||
continue
|
||||
|
||||
response[header.title()] = value
|
||||
|
||||
logger.debug('Response headers: %s', getattr(response, '_headers'))
|
||||
|
||||
|
||||
def normalize_request_headers(request):
|
||||
"""Function used to transform header, replacing 'HTTP\\_' to ''
|
||||
and replace '_' to '-'
|
||||
|
||||
:param request: A HttpRequest that will be transformed
|
||||
:returns: A dictionary with the normalized headers
|
||||
"""
|
||||
norm_headers = {}
|
||||
for header, value in request.META.items():
|
||||
if required_header(header):
|
||||
norm_header = header.replace('HTTP_', '').title().replace('_', '-')
|
||||
norm_headers[norm_header] = value
|
||||
|
||||
return norm_headers
|
||||
|
||||
|
||||
def encode_items(items):
|
||||
"""Function that encode all elements in the list of items passed as
|
||||
a parameter
|
||||
|
||||
:param items: A list of tuple
|
||||
:returns: A list of tuple with all items encoded in 'utf-8'
|
||||
"""
|
||||
encoded = []
|
||||
for key, values in items:
|
||||
for value in values:
|
||||
encoded.append((key.encode('utf-8'), value.encode('utf-8')))
|
||||
return encoded
|
||||
|
||||
|
||||
logger = get_logger()
|
||||
|
||||
|
||||
def cookie_from_string(cookie_string, strict_cookies=False):
|
||||
"""Parser for HTTP header set-cookie
|
||||
The return from this function will be used as parameters for
|
||||
django's response.set_cookie method. Because set_cookie doesn't
|
||||
have parameter comment, this cookie attribute will be ignored.
|
||||
|
||||
:param cookie_string: A string representing a valid cookie
|
||||
:param strict_cookies: Whether to only accept RFC-compliant cookies
|
||||
:returns: A dictionary containing the cookie_string attributes
|
||||
"""
|
||||
|
||||
if strict_cookies:
|
||||
|
||||
cookies = SimpleCookie(COOKIE_PREFIX + cookie_string)
|
||||
if not cookies.keys():
|
||||
return None
|
||||
cookie_name, = cookies.keys()
|
||||
cookie_dict = {k: v for k, v in cookies[cookie_name].items()
|
||||
if v and k != 'comment'}
|
||||
cookie_dict['key'] = cookie_name
|
||||
cookie_dict['value'] = cookies[cookie_name].value
|
||||
return cookie_dict
|
||||
valid_attrs = ('path', 'domain', 'comment', 'expires',
|
||||
'max_age', 'httponly', 'secure')
|
||||
|
||||
cookie_dict = {}
|
||||
|
||||
cookie_parts = cookie_string.split(';')
|
||||
try:
|
||||
cookie_dict['key'], cookie_dict['value'] = \
|
||||
cookie_parts[0].split('=', 1)
|
||||
cookie_dict['value'] = cookie_dict['value'].replace('"', '')
|
||||
except ValueError:
|
||||
logger.warning('Invalid cookie: `%s`', cookie_string)
|
||||
return None
|
||||
|
||||
if cookie_dict['value'].startswith('='):
|
||||
logger.warning('Invalid cookie: `%s`', cookie_string)
|
||||
return None
|
||||
|
||||
for part in cookie_parts[1:]:
|
||||
if '=' in part:
|
||||
attr, value = part.split('=', 1)
|
||||
value = value.strip()
|
||||
else:
|
||||
attr = part
|
||||
value = ''
|
||||
|
||||
attr = attr.strip().lower()
|
||||
if not attr:
|
||||
continue
|
||||
|
||||
if attr in valid_attrs:
|
||||
if attr in ('httponly', 'secure'):
|
||||
cookie_dict[attr] = True
|
||||
elif attr in 'comment':
|
||||
# ignoring comment attr as explained in the
|
||||
# function docstring
|
||||
continue
|
||||
else:
|
||||
cookie_dict[attr] = value
|
||||
else:
|
||||
logger.warning('Unknown cookie attribute %s', attr)
|
||||
|
||||
return cookie_dict
|
||||
@ -1,5 +0,0 @@
|
||||
"""Application Security Gateway settings"""
|
||||
INSTALLED_APPS = [
|
||||
'channels'
|
||||
]
|
||||
ASGI_APPLICATION = "passbook.app_gw.websocket.routing.application"
|
||||
@ -1,19 +0,0 @@
|
||||
"""passbook app_gw cache clean signals"""
|
||||
|
||||
from django.core.cache import cache
|
||||
from django.db.models.signals import post_save
|
||||
from django.dispatch import receiver
|
||||
from structlog import get_logger
|
||||
|
||||
from passbook.app_gw.models import ApplicationGatewayProvider
|
||||
from passbook.app_gw.proxy.handler import IGNORED_HOSTNAMES_KEY
|
||||
|
||||
LOGGER = get_logger(__name__)
|
||||
|
||||
@receiver(post_save)
|
||||
# pylint: disable=unused-argument
|
||||
def invalidate_app_gw_cache(sender, instance, **kwargs):
|
||||
"""Invalidate Policy cache when app_gw is updated"""
|
||||
if isinstance(instance, ApplicationGatewayProvider):
|
||||
LOGGER.debug("Invalidating cache for ignored hostnames")
|
||||
cache.delete(IGNORED_HOSTNAMES_KEY)
|
||||
@ -1,2 +0,0 @@
|
||||
"""passbook app_gw urls"""
|
||||
urlpatterns = []
|
||||
@ -1,83 +0,0 @@
|
||||
"""websocket proxy consumer"""
|
||||
import threading
|
||||
from ssl import CERT_NONE
|
||||
|
||||
import websocket
|
||||
from channels.generic.websocket import WebsocketConsumer
|
||||
from structlog import get_logger
|
||||
|
||||
from passbook.app_gw.models import ApplicationGatewayProvider
|
||||
|
||||
LOGGER = get_logger(__name__)
|
||||
|
||||
class ProxyConsumer(WebsocketConsumer):
|
||||
"""Proxy websocket connection to upstream"""
|
||||
|
||||
_headers_dict = {}
|
||||
_app_gw = None
|
||||
_client = None
|
||||
_thread = None
|
||||
|
||||
def _fix_headers(self, input_dict):
|
||||
"""Fix headers from bytestrings to normal strings"""
|
||||
return {
|
||||
key.decode('utf-8'): value.decode('utf-8')
|
||||
for key, value in dict(input_dict).items()
|
||||
}
|
||||
|
||||
def connect(self):
|
||||
"""Extract host header, lookup in database and proxy connection"""
|
||||
self._headers_dict = self._fix_headers(dict(self.scope.get('headers')))
|
||||
host = self._headers_dict.pop('host')
|
||||
query_string = self.scope.get('query_string').decode('utf-8')
|
||||
matches = ApplicationGatewayProvider.objects.filter(
|
||||
server_name__contains=[host],
|
||||
enabled=True)
|
||||
if matches.exists():
|
||||
self._app_gw = matches.first()
|
||||
# TODO: Get upstream that starts with wss or
|
||||
upstream = self._app_gw.upstream[0].replace('http', 'ws') + self.scope.get('path')
|
||||
if query_string:
|
||||
upstream += '?' + query_string
|
||||
sslopt = {}
|
||||
if not self._app_gw.upstream_ssl_verification:
|
||||
sslopt = {"cert_reqs": CERT_NONE}
|
||||
self._client = websocket.WebSocketApp(
|
||||
url=upstream,
|
||||
subprotocols=self.scope.get('subprotocols'),
|
||||
header=self._headers_dict,
|
||||
on_message=self._client_on_message_handler(),
|
||||
on_error=self._client_on_error_handler(),
|
||||
on_close=self._client_on_close_handler(),
|
||||
on_open=self._client_on_open_handler())
|
||||
LOGGER.debug("Accepting connection for %s", host)
|
||||
self._thread = threading.Thread(target=lambda: self._client.run_forever(sslopt=sslopt))
|
||||
self._thread.start()
|
||||
|
||||
def _client_on_open_handler(self):
|
||||
return lambda ws: self.accept(self._client.sock.handshake_response.subprotocol)
|
||||
|
||||
def _client_on_message_handler(self):
|
||||
# pylint: disable=unused-argument,invalid-name
|
||||
def message_handler(ws, message):
|
||||
if isinstance(message, str):
|
||||
self.send(text_data=message)
|
||||
else:
|
||||
self.send(bytes_data=message)
|
||||
return message_handler
|
||||
|
||||
def _client_on_error_handler(self):
|
||||
return lambda ws, error: print(error)
|
||||
|
||||
def _client_on_close_handler(self):
|
||||
return lambda ws: self.disconnect(0)
|
||||
|
||||
def disconnect(self, code):
|
||||
self._client.close()
|
||||
|
||||
def receive(self, text_data=None, bytes_data=None):
|
||||
if text_data:
|
||||
opcode = websocket.ABNF.OPCODE_TEXT
|
||||
if bytes_data:
|
||||
opcode = websocket.ABNF.OPCODE_BINARY
|
||||
self._client.send(text_data or bytes_data, opcode)
|
||||
@ -1,17 +0,0 @@
|
||||
"""app_gw websocket proxy"""
|
||||
from channels.auth import AuthMiddlewareStack
|
||||
from channels.routing import ProtocolTypeRouter, URLRouter
|
||||
from django.conf.urls import url
|
||||
|
||||
from passbook.app_gw.websocket.consumer import ProxyConsumer
|
||||
|
||||
websocket_urlpatterns = [
|
||||
url(r'^(.*)$', ProxyConsumer),
|
||||
]
|
||||
|
||||
application = ProtocolTypeRouter({
|
||||
# (http->django views is added by default)
|
||||
'websocket': AuthMiddlewareStack(
|
||||
URLRouter(websocket_urlpatterns)
|
||||
),
|
||||
})
|
||||
@ -1,7 +1,7 @@
|
||||
"""passbook policy engine"""
|
||||
from multiprocessing import Pipe
|
||||
from multiprocessing.connection import Connection
|
||||
from typing import List, Tuple
|
||||
from typing import List, Tuple, Tuple
|
||||
|
||||
from django.core.cache import cache
|
||||
from django.http import HttpRequest
|
||||
@ -14,14 +14,11 @@ from passbook.policy.struct import PolicyResult, PolicyRequest
|
||||
LOGGER = get_logger()
|
||||
|
||||
def _cache_key(policy, user):
|
||||
return "policy_%s#%s" % (policy.uuid, user.pk)
|
||||
return f"policy_{policy.pk}#{user.pk}"
|
||||
|
||||
class PolicyEngine:
|
||||
"""Orchestrate policy checking, launch tasks and return result"""
|
||||
|
||||
# __group = None
|
||||
# __cached = None
|
||||
|
||||
policies: List[Policy] = []
|
||||
__request: HttpRequest
|
||||
__user: User
|
||||
@ -53,19 +50,19 @@ class PolicyEngine:
|
||||
for policy in self.policies:
|
||||
cached_policy = cache.get(_cache_key(policy, self.__user), None)
|
||||
if cached_policy:
|
||||
LOGGER.debug("Taking result from cache for %s", policy.pk.hex)
|
||||
LOGGER.debug("Taking result from cache", policy=policy.pk.hex)
|
||||
cached_policies.append(cached_policy)
|
||||
else:
|
||||
LOGGER.debug("Looking up real class of policy...")
|
||||
# TODO: Rewrite this to lookup all policies at once
|
||||
policy = Policy.objects.get_subclass(pk=policy.pk)
|
||||
LOGGER.debug("Evaluating policy %s", policy.pk.hex)
|
||||
LOGGER.debug("Evaluating policy", policy=policy.pk.hex)
|
||||
our_end, task_end = Pipe(False)
|
||||
task = PolicyTask()
|
||||
task.ret = task_end
|
||||
task.request = request
|
||||
task.policy = policy
|
||||
LOGGER.debug("Starting Process %s", task.__class__.__name__)
|
||||
LOGGER.debug("Starting Process", class_name=task.__class__.__name__)
|
||||
task.start()
|
||||
self.__proc_list.append((our_end, task))
|
||||
# If all policies are cached, we have an empty list here.
|
||||
@ -75,13 +72,11 @@ class PolicyEngine:
|
||||
return self
|
||||
|
||||
@property
|
||||
def result(self):
|
||||
def result(self) -> Tuple[bool, List[str]]:
|
||||
"""Get policy-checking result"""
|
||||
results: List[PolicyResult] = []
|
||||
messages: List[str] = []
|
||||
for our_end, _ in self.__proc_list:
|
||||
results.append(our_end.recv())
|
||||
for policy_result in results:
|
||||
policy_result = our_end.recv()
|
||||
# passing = (policy_action == Policy.ACTION_ALLOW and policy_result) or \
|
||||
# (policy_action == Policy.ACTION_DENY and not policy_result)
|
||||
LOGGER.debug('Result=%r => %r', policy_result, policy_result.passing)
|
||||
@ -92,6 +87,6 @@ class PolicyEngine:
|
||||
return True, messages
|
||||
|
||||
@property
|
||||
def passing(self):
|
||||
def passing(self) -> bool:
|
||||
"""Only get true/false if user passes"""
|
||||
return self.result[0]
|
||||
|
||||
@ -34,10 +34,8 @@ STATIC_ROOT = BASE_DIR + '/static'
|
||||
SECRET_KEY = CONFIG.y('secret_key',
|
||||
"9$@r!d^1^jrn#fk#1#@ks#9&i$^s#1)_13%$rwjrhd=e8jfi_s") # noqa Debug
|
||||
|
||||
# SECURITY WARNING: don't run with debug turned on in production!
|
||||
DEBUG = CONFIG.y_bool('debug')
|
||||
INTERNAL_IPS = ['127.0.0.1']
|
||||
# ALLOWED_HOSTS = CONFIG.y('domains', []) + [CONFIG.y('primary_domain')]
|
||||
ALLOWED_HOSTS = ['*']
|
||||
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
|
||||
|
||||
@ -49,7 +47,6 @@ AUTH_USER_MODEL = 'passbook_core.User'
|
||||
|
||||
CSRF_COOKIE_NAME = 'passbook_csrf'
|
||||
SESSION_COOKIE_NAME = 'passbook_session'
|
||||
SESSION_COOKIE_DOMAIN = CONFIG.y('primary_domain')
|
||||
SESSION_ENGINE = "django.contrib.sessions.backends.cache"
|
||||
SESSION_CACHE_ALIAS = "default"
|
||||
LANGUAGE_COOKIE_NAME = 'passbook_language'
|
||||
|
||||
Reference in New Issue
Block a user