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WYGIWYH/app/apps/rules/tests/test_view_permissions.py
T
Herculino Trotta 039ad225d3 test(rules): cover object-level authorization for transaction rules
Regression tests for GHSA-83g9-vjqf-2j5q, one per endpoint the advisory
named plus the delete and view paths found alongside them: a non-owner
gets 403 on every mutation of a public or shared rule, and the object is
asserted unchanged afterwards.

Also covers the parts that are easy to regress in the other direction:
shared users keep read access, a shared user deleting only revokes their
own access, unowned rules stay claimable, and children of invisible rules
answer 404 rather than 403.

SharedObjectPredicateParityTests asserts is_visible_to agrees with
SharedObjectManager across every owner/visibility/shared combination.
The manager builds a Q and the predicate tests an instance, so they
cannot share an implementation and can otherwise drift apart.
2026-09-01 21:43:13 -03:00

474 lines
16 KiB
Python

"""Object-level authorization tests for the transaction-rule endpoints.
Regression coverage for GHSA-83g9-vjqf-2j5q: SharedObjectManager scopes rules to
what a user may *see*, which included other people's public and shared-with-them
rules. Several mutating endpoints treated that visibility as permission to write.
"""
from django.contrib.auth import get_user_model
from django.test import TestCase, override_settings
from django.urls import reverse
from apps.rules.models import (
TransactionRule,
TransactionRuleAction,
UpdateOrCreateTransactionRuleAction,
)
HTMX = {"HTTP_HX_REQUEST": "true"}
@override_settings(
STORAGES={
"default": {"BACKEND": "django.core.files.storage.FileSystemStorage"},
"staticfiles": {
"BACKEND": "django.contrib.staticfiles.storage.StaticFilesStorage"
},
},
WHITENOISE_AUTOREFRESH=True,
DEMO=False,
)
class TransactionRuleObjectPermissionTests(TestCase):
def setUp(self):
User = get_user_model()
self.owner = User.objects.create_user(
email="owner@test.com", password="testpass123"
)
self.shared_user = User.objects.create_user(
email="shared@test.com", password="testpass123"
)
self.stranger = User.objects.create_user(
email="stranger@test.com", password="testpass123"
)
# Public: visible to everyone through SharedObjectManager.
self.public_rule = TransactionRule.all_objects.create(
name="Public rule",
trigger="True",
owner=self.owner,
visibility="public",
active=True,
)
# Private but shared with shared_user: visible to them, not to stranger.
self.shared_rule = TransactionRule.all_objects.create(
name="Shared rule",
trigger="True",
owner=self.owner,
visibility="private",
active=True,
)
self.shared_rule.shared_with.add(self.shared_user)
# Private and unshared: invisible to everyone but the owner.
self.private_rule = TransactionRule.all_objects.create(
name="Private rule",
trigger="True",
owner=self.owner,
visibility="private",
active=True,
)
self.public_action = TransactionRuleAction.objects.create(
rule=self.public_rule, field="notes", value="owned by owner"
)
self.private_action = TransactionRuleAction.objects.create(
rule=self.private_rule, field="notes", value="owned by owner"
)
self.public_linked_action = UpdateOrCreateTransactionRuleAction.objects.create(
rule=self.public_rule
)
self.private_linked_action = UpdateOrCreateTransactionRuleAction.objects.create(
rule=self.private_rule
)
def login(self, user):
self.client.force_login(user)
# ------------------------------------------------------------------
# toggle-active
# ------------------------------------------------------------------
def test_stranger_cannot_toggle_public_rule(self):
self.login(self.stranger)
response = self.client.get(
reverse(
"transaction_rule_toggle_activity",
kwargs={"transaction_rule_id": self.public_rule.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.public_rule.refresh_from_db()
self.assertTrue(self.public_rule.active)
def test_shared_user_cannot_toggle_shared_rule(self):
self.login(self.shared_user)
response = self.client.get(
reverse(
"transaction_rule_toggle_activity",
kwargs={"transaction_rule_id": self.shared_rule.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.shared_rule.refresh_from_db()
self.assertTrue(self.shared_rule.active)
def test_owner_can_toggle_own_rule(self):
self.login(self.owner)
response = self.client.get(
reverse(
"transaction_rule_toggle_activity",
kwargs={"transaction_rule_id": self.public_rule.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 204)
self.public_rule.refresh_from_db()
self.assertFalse(self.public_rule.active)
# ------------------------------------------------------------------
# rule actions
# ------------------------------------------------------------------
def test_stranger_cannot_add_action_to_public_rule(self):
self.login(self.stranger)
response = self.client.post(
reverse(
"transaction_rule_action_add",
kwargs={"transaction_rule_id": self.public_rule.id},
),
data={"field": "notes", "value": "injected", "order": 0},
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.assertFalse(
TransactionRuleAction.objects.filter(value="injected").exists()
)
def test_stranger_cannot_edit_action_on_public_rule(self):
self.login(self.stranger)
response = self.client.post(
reverse(
"transaction_rule_action_edit",
kwargs={"transaction_rule_action_id": self.public_action.id},
),
data={"field": "notes", "value": "rewritten", "order": 0},
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.public_action.refresh_from_db()
self.assertEqual(self.public_action.value, "owned by owner")
def test_stranger_cannot_delete_action_on_public_rule(self):
self.login(self.stranger)
response = self.client.delete(
reverse(
"transaction_rule_action_delete",
kwargs={"transaction_rule_action_id": self.public_action.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.assertTrue(
TransactionRuleAction.objects.filter(pk=self.public_action.pk).exists()
)
def test_stranger_cannot_delete_action_on_invisible_rule(self):
"""The child manager is unscoped, so the id is reachable by guessing.
The parent rule is invisible to the stranger, so the response must be a
404 rather than a 403 that confirms the action exists.
"""
self.login(self.stranger)
response = self.client.delete(
reverse(
"transaction_rule_action_delete",
kwargs={"transaction_rule_action_id": self.private_action.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 404)
self.assertTrue(
TransactionRuleAction.objects.filter(pk=self.private_action.pk).exists()
)
def test_owner_can_delete_own_action(self):
self.login(self.owner)
response = self.client.delete(
reverse(
"transaction_rule_action_delete",
kwargs={"transaction_rule_action_id": self.public_action.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 204)
self.assertFalse(
TransactionRuleAction.objects.filter(pk=self.public_action.pk).exists()
)
# ------------------------------------------------------------------
# update-or-create rule actions
# ------------------------------------------------------------------
def test_stranger_cannot_add_linked_action_to_public_rule(self):
self.login(self.stranger)
response = self.client.post(
reverse(
"update_or_create_transaction_rule_action_add",
kwargs={"transaction_rule_id": self.public_rule.id},
),
data={},
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.assertEqual(
UpdateOrCreateTransactionRuleAction.objects.filter(
rule=self.public_rule
).count(),
1,
)
def test_stranger_cannot_edit_linked_action_on_public_rule(self):
self.login(self.stranger)
response = self.client.post(
reverse(
"update_or_create_transaction_rule_action_edit",
kwargs={"pk": self.public_linked_action.id},
),
data={"filter": "injected"},
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.public_linked_action.refresh_from_db()
self.assertEqual(self.public_linked_action.filter, "")
def test_stranger_cannot_delete_linked_action_on_public_rule(self):
self.login(self.stranger)
response = self.client.delete(
reverse(
"update_or_create_transaction_rule_action_delete",
kwargs={"pk": self.public_linked_action.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.assertTrue(
UpdateOrCreateTransactionRuleAction.objects.filter(
pk=self.public_linked_action.pk
).exists()
)
def test_stranger_cannot_delete_linked_action_on_invisible_rule(self):
self.login(self.stranger)
response = self.client.delete(
reverse(
"update_or_create_transaction_rule_action_delete",
kwargs={"pk": self.private_linked_action.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 404)
self.assertTrue(
UpdateOrCreateTransactionRuleAction.objects.filter(
pk=self.private_linked_action.pk
).exists()
)
# ------------------------------------------------------------------
# edit / share / dry-run
# ------------------------------------------------------------------
def test_stranger_cannot_edit_public_rule(self):
self.login(self.stranger)
response = self.client.post(
reverse(
"transaction_rule_edit",
kwargs={"transaction_rule_id": self.public_rule.id},
),
data={"name": "hijacked", "trigger": "True", "order": 0},
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.public_rule.refresh_from_db()
self.assertEqual(self.public_rule.name, "Public rule")
def test_stranger_cannot_change_sharing_of_public_rule(self):
self.login(self.stranger)
response = self.client.post(
reverse(
"transaction_rule_share_settings", kwargs={"pk": self.public_rule.id}
),
data={"visibility": "private"},
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.public_rule.refresh_from_db()
self.assertEqual(self.public_rule.visibility, "public")
def test_stranger_cannot_dry_run_public_rule(self):
self.login(self.stranger)
response = self.client.get(
reverse(
"transaction_rule_dry_run_created", kwargs={"pk": self.public_rule.id}
),
**HTMX,
)
self.assertEqual(response.status_code, 403)
# ------------------------------------------------------------------
# delete: sharing may be revoked, ownership may not be overridden
# ------------------------------------------------------------------
def test_stranger_cannot_delete_public_rule(self):
"""The original condition fell through to delete() for public rules."""
self.login(self.stranger)
response = self.client.delete(
reverse(
"transaction_rule_delete",
kwargs={"transaction_rule_id": self.public_rule.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.assertTrue(
TransactionRule.all_objects.filter(pk=self.public_rule.pk).exists()
)
def test_shared_user_deleting_only_revokes_their_own_access(self):
self.login(self.shared_user)
response = self.client.delete(
reverse(
"transaction_rule_delete",
kwargs={"transaction_rule_id": self.shared_rule.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 204)
self.assertTrue(
TransactionRule.all_objects.filter(pk=self.shared_rule.pk).exists()
)
self.assertNotIn(self.shared_user, self.shared_rule.shared_with.all())
def test_owner_can_delete_own_rule(self):
self.login(self.owner)
response = self.client.delete(
reverse(
"transaction_rule_delete",
kwargs={"transaction_rule_id": self.public_rule.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 204)
self.assertFalse(
TransactionRule.all_objects.filter(pk=self.public_rule.pk).exists()
)
# ------------------------------------------------------------------
# reads must keep working for shared users
# ------------------------------------------------------------------
def test_shared_user_can_still_view_shared_rule(self):
self.login(self.shared_user)
response = self.client.get(
reverse(
"transaction_rule_view",
kwargs={"transaction_rule_id": self.shared_rule.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 200)
def test_stranger_can_view_public_rule(self):
self.login(self.stranger)
response = self.client.get(
reverse(
"transaction_rule_view",
kwargs={"transaction_rule_id": self.public_rule.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 200)
def test_stranger_cannot_view_private_rule(self):
self.login(self.stranger)
response = self.client.get(
reverse(
"transaction_rule_view",
kwargs={"transaction_rule_id": self.private_rule.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 404)
# ------------------------------------------------------------------
# take ownership stays available for unowned rules only
# ------------------------------------------------------------------
def test_take_ownership_of_unowned_rule_still_works(self):
unowned = TransactionRule.all_objects.create(
name="Legacy rule", trigger="True", owner=None, visibility="private"
)
self.login(self.stranger)
response = self.client.get(
reverse(
"transaction_rule_take_ownership",
kwargs={"transaction_rule_id": unowned.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 204)
unowned.refresh_from_db()
self.assertEqual(unowned.owner, self.stranger)
def test_cannot_take_ownership_of_someone_elses_public_rule(self):
self.login(self.stranger)
response = self.client.get(
reverse(
"transaction_rule_take_ownership",
kwargs={"transaction_rule_id": self.public_rule.id},
),
**HTMX,
)
self.assertEqual(response.status_code, 403)
self.public_rule.refresh_from_db()
self.assertEqual(self.public_rule.owner, self.owner)