mirror of
https://github.com/freedombox/FreedomBox.git
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528fd08245
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org> Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
133 lines
4.4 KiB
Python
133 lines
4.4 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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"""
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Common Django middleware.
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"""
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import logging
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import sys
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from django import urls
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from django.conf import settings
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from django.contrib import messages
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from django.contrib.auth.decorators import login_required
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from django.core.exceptions import PermissionDenied
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from django.shortcuts import render
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from django.utils.deprecation import MiddlewareMixin
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from django.utils.translation import gettext_lazy as _
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from stronghold.utils import is_view_func_public
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from plinth import app as app_module
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from plinth import setup
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from plinth.package import PackageException
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from plinth.utils import is_user_admin
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from . import views
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logger = logging.getLogger(__name__)
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def _collect_setup_result(request, app):
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"""Show success/fail message from previous install operation."""
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setup_helper = sys.modules[app.__module__].setup_helper
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if not setup_helper.is_finished:
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return
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exception = setup_helper.collect_result()
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if not exception:
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if not app.info.is_essential:
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messages.success(request, _('Application installed.'))
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else:
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if isinstance(exception, PackageException):
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error_string = getattr(exception, 'error_string', str(exception))
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error_details = getattr(exception, 'error_details', '')
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message = _('Error installing application: {string} '
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'{details}').format(string=error_string,
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details=error_details)
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else:
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message = _('Error installing application: {error}') \
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.format(error=exception)
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messages.error(request, message)
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class SetupMiddleware(MiddlewareMixin):
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"""Django middleware to show pre-setup message and setup progress."""
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@staticmethod
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def process_view(request, view_func, view_args, view_kwargs):
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"""Handle a request as Django middleware request handler."""
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# Don't interfere with login page
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user_requests_login = request.path.startswith(
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urls.reverse(settings.LOGIN_URL))
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if user_requests_login:
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return
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# Perform a URL resolution. This is slightly inefficient as
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# Django will do this resolution again.
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try:
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resolver_match = urls.resolve(request.path_info)
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except urls.Resolver404:
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return
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if not resolver_match.namespaces or not len(resolver_match.namespaces):
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# Requested URL does not belong to any application
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return
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app_id = resolver_match.namespaces[0]
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app = app_module.App.get(app_id)
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is_admin = is_user_admin(request)
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# Collect and show setup operation result to admins
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if is_admin:
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_collect_setup_result(request, app)
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# Check if application is up-to-date
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if app.get_setup_state() == \
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app_module.App.SetupState.UP_TO_DATE:
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return
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if not is_admin:
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raise PermissionDenied
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# Only allow logged-in users to access any setup page
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view = login_required(views.SetupView.as_view())
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return view(request, app_id=app_id)
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class AdminRequiredMiddleware(MiddlewareMixin):
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"""Django middleware for authenticating requests for admin areas."""
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@staticmethod
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def check_user_group(view_func, request):
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if hasattr(view_func, 'GROUP_NAME'):
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return request.user.groups.filter(
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name=getattr(view_func, 'GROUP_NAME')).exists()
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@staticmethod
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def process_view(request, view_func, view_args, view_kwargs):
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"""Reject non-admin access to views that are private and not marked."""
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if is_view_func_public(view_func) or \
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hasattr(view_func, 'IS_NON_ADMIN'):
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return
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if not is_user_admin(request):
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if not AdminRequiredMiddleware.check_user_group(
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view_func, request):
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raise PermissionDenied
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class FirstSetupMiddleware(MiddlewareMixin):
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"""Django middleware to block all interactions before first setup."""
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@staticmethod
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def process_view(request, view_func, view_args, view_kwargs):
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"""Block all user interactions when first setup is pending."""
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if not setup.is_first_setup_running:
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return
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context = {
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'is_first_setup_running': setup.is_first_setup_running,
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'refresh_page_sec': 3
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}
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return render(request, 'first_setup.html', context)
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