pdf-quiz-generator/backend/tests/test_related_privacy.py
Daniel b6cfcaa1e9
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feat: the bank belongs to a role, not to a person
571 categories, 21 uploaded documents, 14 articles, 8 card decks, 30
shared tests and 2 questions carried somebody's name — mostly
daniel@danvics.com, which is not even the working administrator any
more. So "who may edit this" partly depended on who happened to create
it, and handing the site to somebody else would have meant rewriting
every one of those rows.

Migration q6a7b8c9d0e1 empties those owner columns and makes them
nullable, because ownerless is now a legitimate state and a NOT NULL
owner is exactly what forced a name onto every row. Nothing is deleted
and nothing moves. What keeps its owner, deliberately: attempts, notes,
favourites, collections, folders, study-plan progress, and the quizzes
that are somebody's own sittings rather than shared bank tests.
study_plans needed nothing — it never had an owner column.

Then the code, so it cannot grow back. Authorship is no longer a way in
anywhere: may_edit_question and can_edit_article ask the role and the
grants and nothing else; the article draft, status and delete paths lost
their "or you wrote it" arm; decks are the bank's, so an educator
reaches any of them and a learner reaches the shared ones; documents are
the corpus, so they are editors-only rather than "mine"; and every
creation path writes user_id NULL. The bank listing's "mine" facet went
with it — it counted nothing and could only ever count nothing.

Verified against production as a real learner account: every bank write
403s, admin settings 403, documents empty. As an admin, everything
opens.

Also: a category grant no longer offers Editorial in the menu. It offers
Questions and Images, which is what a grant covers; Editorial is the
whole library's review queue and its route is moderator-only, so the
entry was a door that answered "Not yours to open".

Six tests changed rather than deleted — they asserted the old model, and
each now asserts the new one: writing an article does not make it yours,
writing a question does not make it yours, an answer image is not opened
by authorship, the tutor is not opened by authorship.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TqXevQJhxFrM7jJg82cgZN
2026-09-13 13:26:25 +02:00

473 lines
29 KiB
Python

"""Real routes, disposable files/SQLite, real JWTs; no network/AI calls."""
from datetime import datetime
from pathlib import Path
from tempfile import TemporaryDirectory
import unittest
from unittest.mock import AsyncMock, Mock, patch
from sqlalchemy.dialects import postgresql
import test_quiz_builder as builder
from app.config import settings
from app.models.attempt import QuizAttempt
from app.models.email_verification import EmailVerification
from app.models.flashcard import Flashcard, FlashcardDeck
from app.models.pdf_document import PDFDocument
from app.models.question import Question
from app.models.quiz import Quiz
from app.routers import teach, uploads, flashcards
from app.utils.auth import create_access_token, get_current_user
class PrivacyTests(unittest.TestCase):
def setUp(self):
builder.BuilderTests.setUp(self)
self.tmp = TemporaryDirectory()
self.settings_patch = patch.object(settings, 'UPLOAD_DIR', self.tmp.name)
self.settings_patch.start()
self.client.app.include_router(teach.router, prefix='/teach')
self.client.app.include_router(uploads.router)
self.client.app.include_router(flashcards.router, prefix='/flashcards')
del self.client.app.dependency_overrides[get_current_user]
for q in self.db.query(Question):
q.image_path = f'questions/stem-{q.id}.png'
q.explanation_image_path = f'questions/answer-{q.id}.png'
self.file(q.image_path)
self.file(q.explanation_image_path)
self.db.commit()
self.login(self.owner)
self.quota = patch.object(teach, 'check_rate_limit').start()
self.model = patch.object(teach, '_get_teach_model', return_value=('synthetic', None)).start()
# Every question here has a figure, and the tutor now hands those to
# the model. This file promises no network, so the capability lookup
# is answered here rather than by asking the proxy.
self.can_see = patch.object(teach.vision_service, 'can_see', return_value=True).start()
self.find_similar = teach._find_similar_questions
self.similar = patch.object(teach, '_find_similar_questions', return_value=[]).start()
self.ai = AsyncMock(return_value='Tutor reply\n> Follow up')
patch('app.services.ai_service.achat', new=self.ai).start()
self.embedding = patch('app.services.embedding_service.embed_question').start()
def tearDown(self):
patch.stopall()
self.tmp.cleanup()
builder.BuilderTests.tearDown(self)
def login(self, user, cookie=False):
self.client.headers.pop('authorization', None)
self.client.cookies.clear()
token = create_access_token({'sub': user.email})
if cookie:
self.client.cookies.set('pedshub_media', token, path='/uploads')
else:
self.client.headers['Authorization'] = f'Bearer {token}'
def file(self, path, data=b'synthetic-image'):
target = Path(self.tmp.name) / path
target.parent.mkdir(parents=True, exist_ok=True)
target.write_bytes(data)
return target
def chat(self, qid, aid=None):
return self.client.post('/teach/chat', json={'question_id': qid, 'attempt_id': aid, 'messages': [{'role': 'user', 'content': 'Explain'}]})
def attempt(self, mode='study', completed=False, ids=None, user=1, quiz=2):
a = QuizAttempt(user_id=user, quiz_id=quiz, mode=mode, selected_question_ids=ids,
completed_at=datetime.utcnow() if completed else None)
self.db.add(a)
self.db.commit()
return a
def test_tutor_denial_precedes_all_external_boundaries(self):
self.assertIn(self.chat(999).status_code, (403, 404))
for boundary in (self.quota, self.model, self.similar, self.ai):
boundary.assert_not_called()
# The tutor is handed the correct answer and told it may explain it, so
# outside a session it is an answer key. Being able to reach a question
# in the bank is not the same as having earned its answer: without an
# attempt it opens for the people who write the question, and nobody
# else — and it refuses before the quota, the model or the AI is asked.
for qid in (1, 4, 5):
self.assertEqual(self.chat(qid).status_code, 403)
for boundary in (self.quota, self.model, self.similar, self.ai):
boundary.assert_not_called()
# Question 3 used to open here because this learner wrote it. Nothing
# in the bank belongs to a person now, so authorship buys nothing and
# it is refused like the rest.
self.assertEqual(self.chat(3).status_code, 403)
self.login(self.mod)
self.assertEqual(self.chat(4).status_code, 200)
# The context search is run as the caller, not as whoever wrote it.
self.assertEqual(self.similar.call_args.args[2].id, self.mod.id)
self.assertEqual(self.similar.call_args.args[1].id, 4)
def test_tutor_attempt_modes_pool_and_review(self):
# The tutor's site switch lives in Redis, which these tests share with
# the running site — so an administrator turning the tutor off in the
# interface used to turn this test red. What is under test here is who
# may reach the tutor when it is *on*, so it says so.
from app.services import site_settings
site_settings.set_flag("tutor_in_quiz", True)
self.addCleanup(site_settings.set_flag, "tutor_in_quiz", False)
for mode in ('exam', None):
a = self.attempt(mode=mode, ids=[5])
self.assertEqual(self.chat(5, a.id).status_code, 403)
for a in (self.attempt(ids=[]), self.attempt(ids=[1]), self.attempt(user=2, ids=[5]), self.attempt(quiz=1, ids=[5])):
self.assertEqual(self.chat(5, a.id).status_code, 403)
self.assertEqual(self.chat(5, 999).status_code, 403)
self.ai.assert_not_called()
for a in (self.attempt(ids=[5]), self.attempt(mode='exam', completed=True, ids=[5])):
self.assertEqual(self.chat(5, a.id).status_code, 200)
def test_similarity_sql_filters_before_limit_and_full_prompt(self):
q = self.db.get(Question, 1)
q.options = [f'Option {i}' for i in range(8)]
q.correct_answer = 'Option 2'
q.question_text = 'Long stem ' * 500
prompt = teach._build_system_prompt(q, [])
self.assertIn(q.question_text, prompt)
# Lettered, matching the player: a tutor saying "option 3" about the
# line the student sees as C leaves them reconciling two labellings.
self.assertIn('H) Option 7', prompt)
self.assertIn(q.explanation, prompt)
# The keyed answer is marked against its own option, not only quoted
# underneath — given the text alone a model matches the string back to
# the wrong line when two options start the same way.
self.assertIn('C) Option 2 <-- CORRECT ANSWER', prompt)
# And said as a rule, so a model that would have answered differently
# does not tell the student the marked answer is wrong.
self.assertIn('answer key', prompt)
self.assertIn('authoritative', prompt)
# Compile actual eligibility/ranking SQL; mock only terminal execution.
q.embedding = [0.1] * Question.__table__.c.embedding.type.dim
captured = []
with patch('sqlalchemy.orm.Query.all', autospec=True, side_effect=lambda query: captured.append(query) or []):
self.assertEqual(self.find_similar(self.db, q, self.owner), [])
sql = str(captured[-1].statement.compile(dialect=postgresql.dialect()))
# The predicate no longer consults a per-question flag; what it still
# excludes is a deleted question.
self.assertIn('questions.deleted_at IS NULL', sql)
self.assertIn('<=>', sql)
self.assertLess(sql.index('WHERE'), sql.index('ORDER BY'))
self.assertLess(sql.index('ORDER BY'), sql.index('LIMIT'))
with patch('sqlalchemy.orm.Query.all', side_effect=RuntimeError('Unavailable embeddings')):
self.assertEqual(self.find_similar(self.db, q, self.owner), [])
q.embedding = None
self.assertEqual(self.find_similar(self.db, q, self.owner), [])
self.db.rollback()
def test_native_cookie_bearer_revocation_and_api_exclusion(self):
self.client.headers.clear()
self.assertEqual(self.client.get('/uploads/questions/stem-4.png').status_code, 401)
self.login(self.owner, cookie=True)
# Stems are readable in the bank. Answer images are not: 'answer-3'
# used to open because this learner wrote question 3, and authorship
# is no longer a claim the bank honours.
for path in ('stem-1', 'stem-3', 'stem-4'):
res = self.client.get(f'/uploads/questions/{path}.png')
self.assertEqual(res.status_code, 200, res.text)
self.assertEqual(res.headers['cache-control'], 'private, no-store')
self.assertEqual(res.headers['vary'], 'Cookie, Authorization')
# Somebody else's answer, with no attempt behind it: refused.
for answer in ('answer-1', 'answer-3'):
self.assertEqual(
self.client.get(f'/uploads/questions/{answer}.png').status_code, 404, answer)
# A derivative may be kept by the browser that asked for it — never by
# a shared cache, which in front of access-controlled images is how one
# learner is served another's private figure. The original still says
# no-store; only the thumbnail, which cannot change, may be kept.
# A real image, because a derivative only exists where one can be made:
# the other fixtures here are the bytes `synthetic-image`, and asking
# for a thumbnail of those correctly gets the original back.
import io
from PIL import Image as PILImage
buffer = io.BytesIO()
PILImage.new('RGB', (900, 600), (200, 30, 30)).save(buffer, format='PNG')
self.file('questions/stem-1.png', buffer.getvalue())
thumb = self.client.get('/uploads/questions/stem-1.png?w=256')
self.assertEqual(thumb.status_code, 200, thumb.text)
self.assertIn('private', thumb.headers['cache-control'])
self.assertIn('max-age=', thumb.headers['cache-control'])
self.assertNotIn('public', thumb.headers['cache-control'])
self.assertEqual(thumb.headers['vary'], 'Cookie, Authorization')
self.db.get(Question, 1).deleted_at = datetime(2026, 1, 1)
self.db.commit()
self.assertEqual(self.client.get('/uploads/questions/stem-1.png').status_code, 404)
self.login(self.owner)
self.assertEqual(self.client.get('/uploads/questions/stem-3.png').status_code, 200)
self.db.add(EmailVerification(user_id=1, token='synthetic', expires_at=datetime(2099, 1, 1)))
self.db.commit()
self.assertEqual(self.client.get('/uploads/questions/stem-3.png').status_code, 403)
self.assertEqual(self.chat(3).status_code, 403)
def test_an_attempt_reaches_only_the_questions_it_actually_holds(self):
# An attempt id in the address is not a skeleton key: it opens the
# questions that attempt was given, to the learner it belongs to, and
# nothing else. (The stem itself is bank content and needs no attempt —
# the answer beside it is reachable the same way, which is the tutor's
# rule too, so a session is not what protects it.)
a = self.attempt(mode='study', ids=[5])
url = f'/uploads/questions/answer-5.png?attempt_id={a.id}'
self.assertEqual(self.client.get(url).status_code, 200)
a.selected_question_ids = []
self.db.commit()
self.assertEqual(self.client.get(url).status_code, 404)
a.selected_question_ids = [5]
self.db.commit()
self.login(self.peer)
self.assertEqual(self.client.get(url).status_code, 404)
self.login(self.owner)
self.assertEqual(self.client.get(f'/uploads/questions/answer-5.png?attempt_id=99999').status_code, 404)
def test_extraction_original_pdf_unattached_and_cards(self):
self.db.add_all([PDFDocument(id=1, user_id=2, filename='private.pdf', original_filename='source.pdf'),
PDFDocument(id=2, user_id=1, filename='own.pdf', original_filename='own.pdf')])
for path in ('private.pdf', 'own.pdf', 'images/doc_1/shared.png', 'images/doc_1/adjacent.png', 'images/doc_2/own.png', 'questions/1/draft.png', 'questions/2/draft.png', 'questions/legacy.png'):
self.file(path)
self.db.get(Question, 1).image_path = 'images/doc_1/shared.png'
self.db.get(Question, 2).image_path = 'private.pdf'
self.db.commit()
for path, code in [('private.pdf', 404), ('own.pdf', 200), ('images/doc_1/shared.png', 200), ('images/doc_1/adjacent.png', 404), ('images/doc_2/own.png', 200), ('questions/1/draft.png', 200), ('questions/2/draft.png', 404), ('questions/legacy.png', 404)]:
self.assertEqual(self.client.get('/uploads/' + path).status_code, code, path)
deck = FlashcardDeck(user_id=2, title='Cards', is_shared=0)
self.db.add(deck)
self.db.flush()
self.db.add(Flashcard(deck_id=deck.id, front='front', back='back', image_path='questions/2/draft.png'))
self.db.commit()
self.assertEqual(self.client.get('/uploads/questions/2/draft.png').status_code, 404)
deck.is_shared = 1
self.db.commit()
self.assertEqual(self.client.get('/uploads/questions/2/draft.png').status_code, 200)
deck.deleted_at = datetime.utcnow()
self.db.commit()
self.assertEqual(self.client.get('/uploads/questions/2/draft.png').status_code, 404)
self.login(self.mod)
self.assertEqual(self.client.get('/uploads/questions/legacy.png').status_code, 200)
def test_attachment_forgery_atomic_and_chooser(self):
payload = {'question_text': 'Created', 'options': ['yes', 'no'], 'correct_answer': 'yes'}
before = self.db.query(Question).count()
# Learners cannot manage questions at all.
for field in ('image_path', 'explanation_image_path'):
self.assertEqual(self.client.post('/questions/create', json={**payload, field: 'questions/stem-1.png'}).status_code, 403)
self.assertEqual(self.client.patch('/questions/3', json={'question_text': 'Forged', field: 'questions/stem-1.png'}).status_code, 403)
self.assertEqual(self.db.query(Question).count(), before)
self.assertEqual(self.db.get(Question, 3).question_text, 'Question 3')
self.login(self.mod)
# Educator validation: unsafe and malformed paths are rejected atomically.
for field in ('image_path', 'explanation_image_path'):
for path in ('../escape', '/uploads/questions/../escape', '//other/asset'):
res = self.client.post('/questions/create', json={**payload, field: path})
self.assertIn(res.status_code, (400, 403), res.text)
self.assertEqual(self.db.query(Question).count(), before)
res = self.client.patch('/questions/3', json={'question_text': 'Forged', field: path})
self.assertIn(res.status_code, (400, 403), res.text)
self.assertEqual(self.db.get(Question, 3).question_text, 'Question 3')
# Moderators may reference peer questions; that is a moderator privilege, not a forgery.
res = self.client.post('/questions/create', json={**payload, 'image_path': '/uploads/questions/stem-4.png'})
self.assertEqual(res.status_code, 200, res.text)
res = self.client.post('/questions/create', json={**payload, 'image_path': '/uploads/questions/stem-1.png'})
self.assertEqual(res.status_code, 200, res.text)
self.assertEqual(res.json()['image_path'], 'questions/stem-1.png')
paths = [p['image_path'] for p in self.client.get('/questions/images').json()]
self.assertEqual(paths, sorted(set(paths)))
self.assertIn('questions/stem-1.png', paths)
self.assertIn('questions/stem-4.png', paths) # Now bank-visible via the created shared question.
self.login(self.mod)
for field in ('image_path', 'explanation_image_path'):
for value in ([], {}, 17, '../escape'):
res = self.client.patch('/quizzes/1/questions/1', json={'question_text': 'Forged', field: value})
self.assertEqual(res.status_code, 400, res.text)
self.assertEqual(self.db.get(Question, 1).question_text, 'Question 1')
self.embedding.assert_called() # One embedding per created question (two created here).
def test_same_site_urls_share_path_authorization_and_legacy_references(self):
with patch.object(settings, 'APP_URL', 'https://app.example.com'):
payload = {'question_text': 'Absolute image', 'options': ['yes', 'no'], 'correct_answer': 'yes'}
count = self.db.query(Question).count()
for url in ('https://app.example.com/uploads/questions/stem-4.png',
'http://app.example.com/uploads/questions/answer-4.png'):
response = self.client.post('/questions/create', json={**payload, 'image_path': url})
self.assertEqual(response.status_code, 403, response.text)
self.assertEqual(self.db.query(Question).count(), count)
response = self.client.patch('/questions/3', json={'question_text': 'Forged', 'explanation_image_path': url})
self.assertEqual(response.status_code, 403, response.text)
self.assertEqual(self.db.get(Question, 3).question_text, 'Question 3')
self.login(self.mod)
response = self.client.post('/questions/create', json={**payload,
'image_path': 'https://app.example.com/uploads/questions/stem-1.png'})
self.assertEqual(response.status_code, 200, response.text)
self.assertEqual(response.json()['image_path'], 'questions/stem-1.png')
for url in ('https://external.example:bad/a.png', 'https://external.example:99999/a.png'):
response = self.client.patch('/questions/3', json={'image_path': url})
self.assertEqual(response.status_code, 400, response.text)
response = self.client.patch('/questions/3', json={'image_path': 'https://external.example/figure.png'})
self.assertEqual(response.status_code, 200, response.text)
self.assertEqual(response.json()['image_path'], 'https://external.example/figure.png')
self.db.get(Question, 2).image_path = 'https://app.example.com/uploads/legacy-public.svg'
self.file('legacy-public.svg')
self.db.commit()
self.client.headers.clear()
self.assertEqual(self.client.get('/uploads/legacy-public.svg').status_code, 401)
self.login(self.owner)
self.assertEqual(self.client.get('/uploads/legacy-public.svg').status_code, 200)
self.db.get(Question, 2).deleted_at = datetime(2026, 1, 1)
self.db.commit()
self.assertEqual(self.client.get('/uploads/legacy-public.svg').status_code, 404)
self.db.get(Question, 5).image_path = 'http://app.example.com/uploads/questions/stem-5.png'
self.db.commit()
self.assertEqual(self.client.get('/uploads/questions/stem-5.png').status_code, 200)
def test_card_only_moderator_denial_admin_success_and_question_grant(self):
admin = builder.User(id=4, name='Admin', email='admin@example.com', hashed_password='unused', role='admin')
deck = FlashcardDeck(user_id=2, title='Private peer cards', is_shared=0)
self.db.add_all([admin, deck])
self.db.flush()
card = Flashcard(deck_id=deck.id, front='Private', back='Private', image_path='cards/private.png')
self.db.add(card)
self.db.commit()
payload = {'question_text': 'Copy', 'options': ['yes', 'no'], 'correct_answer': 'yes'}
for path in ('cards/private.png', 'questions/2/card-only.png'):
card.image_path = path
self.file(path)
self.db.commit()
self.login(self.mod)
# A deck is the bank's, so an educator reaches it. The image on
# the card is a separate question, and that is the boundary this
# test is about: it stays refused.
self.assertEqual(self.client.get(f'/flashcards/{deck.id}').status_code, 200)
self.assertEqual(self.client.get('/uploads/' + path).status_code, 404)
before = self.db.query(Question).count()
response = self.client.post('/questions/create', json={**payload, 'image_path': path})
self.assertEqual(response.status_code, 403, response.text)
self.assertEqual(self.db.query(Question).count(), before)
response = self.client.patch('/questions/1', json={'explanation_image_path': path, 'question_text': 'Forged'})
self.assertEqual(response.status_code, 403, response.text)
self.assertEqual(self.db.get(Question, 1).question_text, 'Question 1')
self.login(admin)
self.assertEqual(self.client.get(f'/flashcards/{deck.id}').status_code, 200)
self.assertEqual(self.client.get('/uploads/' + path).status_code, 200)
self.assertEqual(self.client.post('/questions/create', json={**payload, 'image_path': path}).status_code, 200)
# Even inside extraction directories, a card reference stays on card ACL.
self.login(self.mod)
card.image_path = 'images/doc_1/card-only.png'
self.file(card.image_path)
self.db.commit()
self.assertEqual(self.client.get('/uploads/images/doc_1/card-only.png').status_code, 404)
self.assertEqual(self.client.patch('/questions/1', json={'image_path': card.image_path}).status_code, 403)
self.login(admin)
self.assertEqual(self.client.get('/uploads/images/doc_1/card-only.png').status_code, 200)
# A real question reference independently gives its moderator access.
self.login(self.mod)
self.db.get(Question, 4).image_path = 'cards/moderated-question.png'
card.image_path = 'cards/moderated-question.png'
self.file(card.image_path)
self.db.commit()
self.assertEqual(self.client.get('/uploads/cards/moderated-question.png').status_code, 200)
self.assertEqual(self.client.post('/questions/create', json={**payload, 'image_path': card.image_path}).status_code, 200)
def test_legacy_aliases_are_canonical_for_classification_and_permissions(self):
with patch.object(settings, 'APP_URL', 'https://app.example.com'):
self.file('legacy-private.svg')
self.file('course_files/card-only.svg')
question = self.db.get(Question, 3)
variants = [
'https://APP.EXAMPLE.COM/uploads/legacy-private.svg?v=1#view',
'http://app.example.com:80/uploads/legacy-private.svg#part',
'/uploads/legacy-private.svg?size=1',
'legacy-private.svg#part',
'https://app%2Eexample.com/uploads/legacy-private.svg',
'/uploads/images/../legacy-private.svg',
'https://app.example.com/uploads/%6Cegacy-private.svg',
r'https://app.example.com\uploads\legacy-private.svg?v=1',
]
for value in variants:
question.image_path = value
self.db.commit()
self.client.headers.clear()
self.client.cookies.clear()
self.assertEqual(self.client.get('/uploads/legacy-private.svg?v=1').status_code, 401, value)
self.login(self.owner)
self.assertEqual(self.client.get('/uploads/legacy-private.svg?v=1').status_code, 200, value)
self.login(self.peer)
# The question is in the bank, so its image is reachable by
# anybody who may sit it — which, with per-question sharing
# gone, is everybody.
self.assertEqual(self.client.get('/uploads/legacy-private.svg').status_code, 200, value)
self.login(self.owner)
bank_paths = self.client.get('/questions/images').json()
self.assertIn({'image_path': 'legacy-private.svg', 'url': '/uploads/legacy-private.svg'}, bank_paths)
# Parsing a browser-normalized URL must not bypass checks on new writes.
self.login(self.peer)
response = self.client.patch('/questions/4', json={'image_path': 'https://app%2Eexample.com/uploads/legacy-private.svg'})
self.assertEqual(response.status_code, 403) # Learners cannot edit questions.
self.login(self.mod)
for value in ('https://app%2Eexample.com/uploads/legacy-private.svg',
r'https://app.example.com\uploads\legacy-private.svg'):
response = self.client.patch('/questions/4', json={'image_path': value})
self.assertEqual(response.status_code, 400, response.text)
# Even a legacy-LMS directory becomes protected when a private card references it.
deck = FlashcardDeck(user_id=1, title='Private owner cards', is_shared=0)
self.db.add(deck)
self.db.flush()
self.db.add(Flashcard(deck_id=deck.id, front='Private', back='Private',
image_path='https://APP.EXAMPLE.COM/uploads/course_files/card-only.svg?v=1#card'))
self.db.commit()
self.client.headers.clear()
self.assertEqual(self.client.get('/uploads/course_files/card-only.svg').status_code, 401)
self.login(self.owner)
self.assertEqual(self.client.get('/uploads/course_files/card-only.svg').status_code, 200)
self.login(self.mod)
self.assertEqual(self.client.get('/uploads/course_files/card-only.svg').status_code, 404)
self.assertEqual(self.client.patch('/questions/1', json={'image_path': 'course_files/card-only.svg'}).status_code, 403)
def test_orphaned_files_do_not_become_anonymous_after_reference_deletion(self):
self.file('orphan.svg')
question = self.db.get(Question, 3)
question.image_path = 'orphan.svg'
self.db.commit()
self.assertEqual(self.client.get('/uploads/orphan.svg').status_code, 200)
self.db.delete(question)
self.db.commit()
self.client.headers.clear()
self.assertEqual(self.client.get('/uploads/orphan.svg').status_code, 401)
self.login(self.peer)
self.assertEqual(self.client.get('/uploads/orphan.svg').status_code, 404)
for prefix in ('course_files', 'course_thumbnails', 'scorm', 'certificates'):
self.file(f'{prefix}/unrelated.bin')
self.client.headers.clear()
self.assertEqual(self.client.get(f'/uploads/{prefix}/unrelated.bin').status_code, 200)
def test_paths_svg_head_range_upload_and_legacy_policy(self):
res = self.client.post('/questions/upload-image', files={'file': ('test.svg', b'<svg xmlns="http://www.w3.org/2000/svg"/>', 'image/svg+xml')})
self.assertEqual(res.status_code, 200, res.text)
self.assertTrue(res.json()['image_path'].startswith('questions/1/'))
url = res.json()['url']
res = self.client.get(url)
self.assertEqual(res.headers['x-content-type-options'], 'nosniff')
self.assertIn('sandbox', res.headers['content-security-policy'])
head = self.client.head(url)
self.assertEqual(head.status_code, 200)
self.assertEqual(head.content, b'')
self.assertEqual(head.headers['content-length'], str(len(res.content)))
ranged = self.client.get(url, headers={'Range': 'bytes=0-3'})
# HTTP permits ignoring Range; pinned Starlette returns a full 200 here.
# Production byte-range delivery is checked through Nginx's native filter.
self.assertIn(ranged.status_code, (200, 206))
self.assertEqual(ranged.content, res.content[:4] if ranged.status_code == 206 else res.content)
Path(self.tmp.name, 'questions', 'alias.png').symlink_to(Path(self.tmp.name, 'questions', 'stem-4.png'))
Path(self.tmp.name, 'questions', 'outside.png').symlink_to('/etc/passwd')
for path in ('questions/alias.png', 'questions/outside.png', 'questions/%2e%2e/escape', 'questions/%252e%252e/escape', 'questions/%5cescape', 'questions/missing.png', 'questions/' + 'x' * 300):
self.assertEqual(self.client.get('/uploads/' + path).status_code, 404, path)
self.file('scorm/test/index.html', b'<html>Legacy SCORM</html>')
self.client.headers.clear()
legacy = self.client.get('/uploads/scorm/test/index.html')
self.assertEqual(legacy.status_code, 200)
self.assertEqual(legacy.headers['cache-control'], 'private, no-store')
if __name__ == '__main__':
unittest.main()