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Used a plain HTML form for DjangoProject login.
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Fixes #95, #61 and #60
Also possibly #100 and #64
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bmispelon authored Feb 2, 2024
1 parent a1b9c80 commit eb16ed0
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Showing 10 changed files with 255 additions and 113 deletions.
14 changes: 14 additions & 0 deletions .github/workflows/tests.yml
Original file line number Diff line number Diff line change
Expand Up @@ -24,3 +24,17 @@ jobs:
python-version: '3.7'
- run: pip install "tinycss2>=1.2.0"
- run: python noshadows.py --tests

tracdjangoplugin:
runs-on: ubuntu-latest
container:
image: python:2.7.18-buster
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Install requirements
run: python -m pip install -r requirements.txt
- name: Run tests
run: python -m django test tracdjangoplugin.tests
env:
DJANGO_SETTINGS_MODULE: tracdjangoplugin.settings_tests
101 changes: 0 additions & 101 deletions DjangoPlugin/tracdjangoplugin/djangoauth.py

This file was deleted.

51 changes: 50 additions & 1 deletion DjangoPlugin/tracdjangoplugin/plugins.py
Original file line number Diff line number Diff line change
@@ -1,11 +1,18 @@
from urlparse import urlparse

from trac.core import Component, implements
from trac.web.chrome import INavigationContributor
from trac.web.api import IRequestFilter, IRequestHandler
from trac.web.api import IRequestFilter, IRequestHandler, RequestDone
from trac.web.auth import LoginModule
from trac.wiki.web_ui import WikiModule
from trac.util import Markup
from trac.util.html import tag
from tracext.github import GitHubBrowser

from django.conf import settings
from django.contrib.auth.forms import AuthenticationForm
from django.utils.http import is_safe_url


class CustomTheme(Component):
implements(IRequestFilter)
Expand Down Expand Up @@ -91,3 +98,45 @@ def _format_changeset_link(self, formatter, ns, chgset, label, fullmatch=None):
return super(GitHubBrowserWithSVNChangesets, self)._format_changeset_link(
formatter, ns, chgset, label, fullmatch
)


class PlainLoginComponent(Component):
"""
Enable login through a plain HTML form (no more HTTP basic auth)
"""

implements(IRequestHandler)

def match_request(self, req):
return req.path_info == "/login"

def process_request(self, req):
if req.method == "POST":
return self.do_post(req)
elif req.method == "GET":
return self.do_get(req)
else:
req.send_response(405)
raise RequestDone

def do_get(self, req):
return "plainlogin.html", {
"form": AuthenticationForm(),
"next": req.args.get("next", ""),
}

def do_post(self, req):
form = AuthenticationForm(data=req.args)
if form.is_valid():
req.environ["REMOTE_USER"] = form.get_user().username
LoginModule(self.compmgr)._do_login(req)
req.redirect(self._get_safe_redirect_url(req))
return "plainlogin.html", {"form": form, "next": req.args.get("next", "")}

def _get_safe_redirect_url(self, req):
host = urlparse(req.base_url).hostname
redirect_url = req.args.get("next", "") or settings.LOGIN_REDIRECT_URL
if is_safe_url(redirect_url, allowed_hosts=[host]):
return redirect_url
else:
return settings.LOGIN_REDIRECT_URL
11 changes: 7 additions & 4 deletions DjangoPlugin/tracdjangoplugin/settings.py
Original file line number Diff line number Diff line change
@@ -1,8 +1,11 @@
import json
import os

with open(os.environ.get("SECRETS_FILE")) as handle:
SECRETS = json.load(handle)
if os.environ.get("SECRETS_FILE"):
with open(os.environ.get("SECRETS_FILE")) as handle:
SECRETS = json.load(handle)
else:
SECRETS = {}

DEBUG = False

Expand All @@ -23,6 +26,6 @@
]


SECRET_KEY = str(SECRETS["secret_key"])
SECRET_KEY = SECRETS.get("secret_key", "")

BASIC_AUTH_REALM = "Django's Trac"
LOGIN_REDIRECT_URL = "/"
13 changes: 13 additions & 0 deletions DjangoPlugin/tracdjangoplugin/settings_tests.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
from .settings import *

DATABASES = {
"default": {
"ENGINE": "django.db.backends.sqlite3",
},
}

PASSWORD_HASHERS = [
"django.contrib.auth.hashers.MD5PasswordHasher",
]

SECRET_KEY = "test"
129 changes: 129 additions & 0 deletions DjangoPlugin/tracdjangoplugin/tests.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,129 @@
from functools import partial

from django.contrib.auth.forms import AuthenticationForm
from django.contrib.auth.models import User
from django.test import TestCase

from trac.test import EnvironmentStub, MockRequest
from trac.web.api import RequestDone
from trac.web.main import RequestDispatcher

from tracdjangoplugin.plugins import PlainLoginComponent


class PlainLoginComponentTestCase(TestCase):
def setUp(self):
self.env = EnvironmentStub()
self.component = PlainLoginComponent(self.env)
self.request_factory = partial(MockRequest, self.env)

def test_component_matches_correct_url(self):
request = self.request_factory(path_info="/login")
self.assertTrue(self.component.match_request(request))

def test_component_doesnt_match_another_url(self):
request = self.request_factory(path_info="/github/login")
self.assertFalse(self.component.match_request(request))

def test_component(self):
request = self.request_factory(path_info="/login")
template, context = self.component.process_request(request)
self.assertEqual(template, "plainlogin.html")
self.assertFalse(context["form"].is_bound)

def assertLoginSucceeds(
self, username, password, check_redirect=None, extra_data=None
):
data = {"username": username, "password": password}
if extra_data is not None:
data.update(extra_data)
request = self.request_factory(method="POST", path_info="/login", args=data)
with self.assertRaises(RequestDone):
self.component.process_request(request)

self.assertEqual(request.authname, "test")
self.assertEqual(request.status_sent, ["303 See Other"])
if check_redirect is not None:
redirect_url = request.headers_sent["Location"]
self.assertEqual(redirect_url, check_redirect)

def test_login_valid_user(self):
User.objects.create_user(username="test", password="test")
self.assertLoginSucceeds(username="test", password="test")

def test_login_valid_default_redirect(self):
self.env.config.set("trac", "base_url", "")
User.objects.create_user(username="test", password="test")
with self.settings(LOGIN_REDIRECT_URL="/test"):
self.assertLoginSucceeds(
username="test", password="test", check_redirect="/test"
)

def test_login_valid_with_custom_redirection(self):
self.env.config.set("trac", "base_url", "")
User.objects.create_user(username="test", password="test")
self.assertLoginSucceeds(
username="test",
password="test",
check_redirect="/test",
extra_data={"next": "/test"},
)

def test_login_valid_with_custom_redirection_with_hostname(self):
self.env.config.set("trac", "base_url", "http://localhost")
User.objects.create_user(username="test", password="test")
self.assertLoginSucceeds(
username="test",
password="test",
check_redirect="http://localhost/test",
extra_data={"next": "http://localhost/test"},
)

def test_login_valid_with_malicious_redirection(self):
self.env.config.set("trac", "base_url", "http://localhost")
User.objects.create_user(username="test", password="test")
with self.settings(LOGIN_REDIRECT_URL="/test"):
self.assertLoginSucceeds(
username="test",
password="test",
check_redirect="http://localhost/test",
extra_data={"next": "http://example.com/evil"},
)

def assertLoginFails(self, username, password, error_message=None):
if error_message is None:
error_message = AuthenticationForm.error_messages["invalid_login"] % {
"username": "username"
}

request = self.request_factory(
method="POST",
path_info="/login",
args={"username": username, "password": password},
)
template, context = self.component.process_request(request)
self.assertEqual(template, "plainlogin.html")
self.assertEqual(context["form"].errors, {"__all__": [error_message]})

def test_login_invalid_no_users(self):
self.assertLoginFails(username="test", password="test")

def test_login_invalid_incorrect_username(self):
User.objects.create_user(username="test", password="test")
self.assertLoginFails(username="test123", password="test")

def test_login_invalid_incorrect_password(self):
User.objects.create_user(username="test", password="test")
self.assertLoginFails(username="test", password="test123")

def test_login_invalid_incorrect_username_and_password(self):
User.objects.create_user(username="test", password="test")
self.assertLoginFails(username="test123", password="test123")

def test_login_invalid_username_uppercased(self):
User.objects.create_user(username="test", password="test")
self.assertLoginFails(username="TEST", password="test")

def test_login_invalid_inactive_user(self):
User.objects.create_user(username="test", password="test", is_active=False)
self.assertLoginFails(username="test", password="test")
9 changes: 4 additions & 5 deletions DjangoPlugin/tracdjangoplugin/wsgi.py
Original file line number Diff line number Diff line change
Expand Up @@ -4,18 +4,17 @@

application = trac.web.main.dispatch_request

import django

django.setup()

# Massive hack to make Trac fast, otherwise every git call tries to close ulimit -n (1e6) fds
# Python 3 would perform better here, but we are still on 2.7 for Trac, so leak fds for now.
from tracopt.versioncontrol.git import PyGIT

PyGIT.close_fds = False

from .djangoauth import DjangoAuth

application = DjangoAuth(application)

trac_dsn = os.getenv("SENTRY_DSN")

if trac_dsn:
import sentry_sdk
from sentry_sdk.integrations.wsgi import SentryWsgiMiddleware
Expand Down
1 change: 1 addition & 0 deletions trac-env/conf/trac.ini
Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ trac.ticket.roadmap.roadmapmodule = disabled
trac.versioncontrol.web_ui.browser.browsermodule = disabled
trac.versioncontrol.web_ui.changeset.changesetmodule = disabled
trac.versioncontrol.web_ui.log.logmodule = disabled
trac.web.auth.loginmodule = disabled; replaced by djangoplugin.PlainLoginComponent
trac.wiki.web_ui.wikimodule = disabled
tracdjangoplugin.* = enabled
tracext.github.githubloginmodule = enabled
Expand Down
3 changes: 1 addition & 2 deletions trac-env/templates/django_theme.html
Original file line number Diff line number Diff line change
Expand Up @@ -28,8 +28,7 @@
</form>
</li>
# else
<li><a href="/github/login">GitHub Login</a></li>
<li><a href="/login">DjangoProject Login</a></li>
<li><a href="/login?next=${req.path_info|urlencode()}">Login</a></li>
# endif
<li><a href="${req.href.prefs()}">Preferences</a></li>
# if req.perm.has_permission('XML_RPC'):
Expand Down
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