Files
mcp-nextcloud/tests/unit/test_oidc_discovery.py
T
Chris CoutinhoandClaude Opus 4.7 d4760f64dc fix(oauth): follow redirects when fetching OIDC discovery
Nextcloud installs without pretty URLs return a 301 from
`/.well-known/openid-configuration` to
`/index.php/.well-known/openid-configuration` (e.g. Hetzner StorageShare).
`_get_cached_discovery` did not enable follow_redirects, so httpx raised
HTTPStatusError on the 301 and the AS-proxy authorize handler returned
500, breaking client connections (e.g. claude.ai).

Pass `follow_redirects=True` to the httpx client used for the discovery
fetch only — downstream OIDC endpoints (token, userinfo, etc.) are
absolute URLs read from the discovery doc and are unaffected.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 01:18:46 +02:00

62 lines
2.1 KiB
Python

"""Unit tests for OIDC discovery fetch in oauth_routes."""
from unittest.mock import patch
import httpx
import pytest
from nextcloud_mcp_server.auth import oauth_routes
from nextcloud_mcp_server.auth.oauth_routes import _get_cached_discovery
pytestmark = pytest.mark.unit
@pytest.fixture(autouse=True)
def _clear_discovery_cache():
"""Reset the in-memory discovery cache between tests."""
oauth_routes._discovery_cache.clear()
yield
oauth_routes._discovery_cache.clear()
async def test_discovery_follows_redirect_to_index_php():
"""Discovery fetch must follow 301s.
Hetzner StorageShare and other Nextcloud installs without pretty URLs
redirect ``/.well-known/openid-configuration`` to
``/index.php/.well-known/openid-configuration``. Without follow_redirects
the OAuth authorize handler raises HTTPStatusError and returns 500
(see oauth_routes._get_cached_discovery).
"""
pretty_url = "https://nx.example.com/.well-known/openid-configuration"
rewritten_url = "https://nx.example.com/index.php/.well-known/openid-configuration"
discovery_doc = {
"issuer": "https://nx.example.com",
"authorization_endpoint": "https://nx.example.com/index.php/apps/oidc/authorize",
"token_endpoint": "https://nx.example.com/index.php/apps/oidc/token",
}
def handler(request: httpx.Request) -> httpx.Response:
if str(request.url) == pretty_url:
return httpx.Response(301, headers={"location": rewritten_url})
if str(request.url) == rewritten_url:
return httpx.Response(200, json=discovery_doc)
return httpx.Response(404)
transport = httpx.MockTransport(handler)
def fake_client(**kwargs):
kwargs["transport"] = transport
return httpx.AsyncClient(**kwargs)
with patch(
"nextcloud_mcp_server.auth.oauth_routes.nextcloud_httpx_client",
side_effect=fake_client,
) as factory:
result = await _get_cached_discovery(pretty_url)
assert result == discovery_doc
factory.assert_called_once()
assert factory.call_args.kwargs.get("follow_redirects") is True