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fix(caldav): Check that calendar exists after creation to avoid race condition

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Verify that field preservation tests still operate
This commit is contained in:
Chris Coutinho
2025-10-19 23:44:39 +02:00
parent 1dc2ddfdb7
commit a143123acc
9 changed files with 524 additions and 136 deletions
Download Patch File Download Diff File Expand all files Collapse all files
app-hooks/post-installation/0001-feat-Advertise-PKCE-support-in-discovery-document.patch
+63
View File
@@ -0,0 +1,63 @@
From 9036daecdc8bcdf8114715dcf17e5c06967b25fb Mon Sep 17 00:00:00 2001
From: Chris Coutinho <chris@coutinho.io>
Date: Mon, 13 Oct 2025 23:24:53 +0200
Subject: [PATCH 1/2] feat: Advertise PKCE support in discovery document
Add code_challenge_methods_supported to OpenID Connect discovery
document when PKCE is enabled via proof_key_for_code_exchange config.
Rationale:
According to RFC 8414 Section 2, the code_challenge_methods_supported
field in OAuth 2.0 Authorization Server Metadata has specific semantics:
"If omitted, the authorization server does not support PKCE."
This means that clients following RFC 8414 strictly will interpret the
absence of this field as explicit non-support for PKCE, even if the
authorization server technically supports it.
Impact:
- Standards-compliant OAuth clients (e.g., MCP clients) require explicit
advertisement of PKCE support before proceeding with authorization
- The MCP (Model Context Protocol) specification mandates that clients
MUST refuse to proceed if code_challenge_methods_supported is absent
- Other security-focused OAuth implementations may have similar checks
Implementation:
- Only advertises S256 (SHA-256) challenge method, which is the most
secure and widely supported method
- Conditional on the existing proof_key_for_code_exchange app config
- Maintains backward compatibility: only added when PKCE is enabled
This change ensures the discovery document accurately reflects server
capabilities per RFC 8414 semantics, enabling compatibility with
strict standards-compliant OAuth clients.
References:
- RFC 8414: OAuth 2.0 Authorization Server Metadata
- RFC 7636: Proof Key for Code Exchange by OAuth Public Clients
- MCP Authorization Specification
Signed-off-by: Chris Coutinho <chris@coutinho.io>
---
lib/Util/DiscoveryGenerator.php | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/lib/Util/DiscoveryGenerator.php b/lib/Util/DiscoveryGenerator.php
index ee3cd57..6429f94 100644
--- a/lib/Util/DiscoveryGenerator.php
+++ b/lib/Util/DiscoveryGenerator.php
@@ -171,6 +171,11 @@ class DiscoveryGenerator
$discoveryPayload['registration_endpoint'] = $host . $this->urlGenerator->linkToRoute('oidc.DynamicRegistration.registerClient', []);
}
+ // Add PKCE support if enabled
+ if ($this->appConfig->getAppValueBool('proof_key_for_code_exchange', false)) {
+ $discoveryPayload['code_challenge_methods_supported'] = ['S256'];
+ }
+
$this->logger->info('Request to Discovery Endpoint.');
$response = new JSONResponse($discoveryPayload);
--
2.51.1
app-hooks/post-installation/0002-Add-PKCE-code-challenge-methods-to-discovery-documen.patch
-16
View File
@@ -1,16 +0,0 @@
diff --git a/lib/Util/DiscoveryGenerator.php b/lib/Util/DiscoveryGenerator.php
index ee3cd57..6429f94 100644
--- a/lib/Util/DiscoveryGenerator.php
+++ b/lib/Util/DiscoveryGenerator.php
@@ -171,6 +171,11 @@ class DiscoveryGenerator
$discoveryPayload['registration_endpoint'] = $host . $this->urlGenerator->linkToRoute('oidc.DynamicRegistration.registerClient', []);
}
+ // Add PKCE support if enabled
+ if ($this->appConfig->getAppValueBool('proof_key_for_code_exchange', false)) {
+ $discoveryPayload['code_challenge_methods_supported'] = ['S256'];
+ }
+
$this->logger->info('Request to Discovery Endpoint.');
$response = new JSONResponse($discoveryPayload);
app-hooks/post-installation/0002-Initial-implementation-of-PKCE.patch
+320
View File
@@ -0,0 +1,320 @@
From cb2c931fe1f73e5bbfdf459928b5b21e2d96e0f1 Mon Sep 17 00:00:00 2001
From: Chris Coutinho <chris@coutinho.io>
Date: Sun, 19 Oct 2025 21:04:46 +0200
Subject: [PATCH 2/2] Initial implementation of PKCE
Signed-off-by: Chris Coutinho <chris@coutinho.io>
---
lib/Controller/LoginRedirectorController.php | 44 +++++++++++-
lib/Controller/OIDCApiController.php | 68 ++++++++++++++++++-
lib/Db/AccessToken.php | 10 +++
.../Version0014Date20251019100100.php | 63 +++++++++++++++++
lib/Util/DiscoveryGenerator.php | 2 +-
5 files changed, 184 insertions(+), 3 deletions(-)
create mode 100644 lib/Migration/Version0014Date20251019100100.php
diff --git a/lib/Controller/LoginRedirectorController.php b/lib/Controller/LoginRedirectorController.php
index 1b9bdde..5f2d327 100644
--- a/lib/Controller/LoginRedirectorController.php
+++ b/lib/Controller/LoginRedirectorController.php
@@ -142,6 +142,8 @@ class LoginRedirectorController extends ApiController
* @param string $scope
* @param string $nonce
* @param string $resource
+ * @param string $code_challenge
+ * @param string $code_challenge_method
* @return Response
*/
#[BruteForceProtection(action: 'oidc_login')]
@@ -155,7 +157,9 @@ class LoginRedirectorController extends ApiController
$redirect_uri,
$scope,
$nonce,
- $resource
+ $resource,
+ $code_challenge = null,
+ $code_challenge_method = null
): Response
{
if (!$this->userSession->isLoggedIn()) {
@@ -168,6 +172,8 @@ class LoginRedirectorController extends ApiController
$this->session->set('oidc_scope', $scope);
$this->session->set('oidc_nonce', $nonce);
$this->session->set('oidc_resource', $resource);
+ $this->session->set('oidc_code_challenge', $code_challenge);
+ $this->session->set('oidc_code_challenge_method', $code_challenge_method);
$afterLoginRedirectUrl = $this->urlGenerator->linkToRoute('oidc.Page.index', []);
@@ -204,6 +210,12 @@ class LoginRedirectorController extends ApiController
if (empty($resource)) {
$resource = $this->session->get('oidc_resource');
}
+ if (empty($code_challenge)) {
+ $code_challenge = $this->session->get('oidc_code_challenge');
+ }
+ if (empty($code_challenge_method)) {
+ $code_challenge_method = $this->session->get('oidc_code_challenge_method');
+ }
// Set default scope if scope is not set at all
if (!isset($scope)) {
@@ -327,6 +339,30 @@ class LoginRedirectorController extends ApiController
$uid = $this->userSession->getUser()->getUID();
+ // PKCE validation (RFC 7636)
+ if (!empty($code_challenge)) {
+ // Validate code_challenge format: 43-128 characters, unreserved chars only
+ if (!preg_match('/^[A-Za-z0-9._~-]{43,128}$/', $code_challenge)) {
+ $this->logger->notice('Invalid code_challenge format for client ' . $client_id . '.');
+ $url = $redirect_uri . '?error=invalid_request&error_description=Invalid%20code_challenge%20format&state=' . urlencode($state);
+ return new RedirectResponse($url);
+ }
+
+ // Default to S256 if method not specified
+ if (empty($code_challenge_method)) {
+ $code_challenge_method = 'S256';
+ }
+
+ // Validate code_challenge_method: only S256 and plain are allowed
+ if (!in_array($code_challenge_method, ['S256', 'plain'])) {
+ $this->logger->notice('Unsupported code_challenge_method for client ' . $client_id . ': ' . $code_challenge_method);
+ $url = $redirect_uri . '?error=invalid_request&error_description=Unsupported%20code_challenge_method&state=' . urlencode($state);
+ return new RedirectResponse($url);
+ }
+
+ $this->logger->debug('PKCE challenge received for client ' . $client_id . ' using method ' . $code_challenge_method);
+ }
+
$code = $this->random->generate(128, ISecureRandom::CHAR_UPPER.ISecureRandom::CHAR_LOWER.ISecureRandom::CHAR_DIGITS);
$accessToken = new AccessToken();
$accessToken->setClientId($client->getId());
@@ -343,6 +379,12 @@ class LoginRedirectorController extends ApiController
}
$accessToken->setNonce($nonce);
+ // Store PKCE challenge if provided
+ if (!empty($code_challenge)) {
+ $accessToken->setCodeChallenge(substr($code_challenge, 0, 128));
+ $accessToken->setCodeChallengeMethod(substr($code_challenge_method, 0, 16));
+ }
+
try {
$accessToken->setAccessToken($this->jwtGenerator->generateAccessToken($accessToken, $client, $this->request->getServerProtocol(), $this->request->getServerHost()));
$this->accessTokenMapper->insert($accessToken);
diff --git a/lib/Controller/OIDCApiController.php b/lib/Controller/OIDCApiController.php
index 6fd6eb0..059396c 100644
--- a/lib/Controller/OIDCApiController.php
+++ b/lib/Controller/OIDCApiController.php
@@ -125,12 +125,13 @@ class OIDCApiController extends ApiController {
* @param string $refresh_token
* @param string $client_id
* @param string $client_secret
+ * @param string $code_verifier
* @return JSONResponse
*/
#[BruteForceProtection(action: 'oidc_token')]
#[PublicPage]
#[NoCSRFRequired]
- public function getToken($grant_type, $code, $refresh_token, $client_id, $client_secret): JSONResponse
+ public function getToken($grant_type, $code, $refresh_token, $client_id, $client_secret, $code_verifier = null): JSONResponse
{
$expireTime = (int)$this->appConfig->getAppValueString(Application::APP_CONFIG_DEFAULT_EXPIRE_TIME, '0');
$refreshExpireTime = (int)$this->appConfig->getAppValueString(Application::APP_CONFIG_DEFAULT_REFRESH_EXPIRE_TIME, Application::DEFAULT_REFRESH_EXPIRE_TIME);
@@ -212,6 +213,32 @@ class OIDCApiController extends ApiController {
'error_description' => 'Access token already expired.',
], Http::STATUS_BAD_REQUEST);
}
+
+ // PKCE verification (RFC 7636 Section 4.6)
+ $storedCodeChallenge = $accessToken->getCodeChallenge();
+ if (!empty($storedCodeChallenge)) {
+ // PKCE was used in authorization request, code_verifier is required
+ if (empty($code_verifier)) {
+ $this->accessTokenMapper->delete($accessToken);
+ $this->logger->notice('Missing code_verifier for PKCE-protected token. Client id: ' . $client_id);
+ return new JSONResponse([
+ 'error' => 'invalid_grant',
+ 'error_description' => 'code_verifier required for PKCE flow.',
+ ], Http::STATUS_BAD_REQUEST);
+ }
+
+ $storedCodeChallengeMethod = $accessToken->getCodeChallengeMethod() ?: 'S256';
+ if (!$this->verifyPkce($code_verifier, $storedCodeChallenge, $storedCodeChallengeMethod)) {
+ $this->accessTokenMapper->delete($accessToken);
+ $this->logger->notice('PKCE verification failed. Client id: ' . $client_id);
+ return new JSONResponse([
+ 'error' => 'invalid_grant',
+ 'error_description' => 'Invalid code_verifier.',
+ ], Http::STATUS_BAD_REQUEST);
+ }
+
+ $this->logger->debug('PKCE verification successful for client ' . $client_id);
+ }
} elseif ($refreshExpireTime !== 'never') {
// The refresh token must not be expired
$refreshExpireTime = (int)$refreshExpireTime;
@@ -286,4 +313,43 @@ class OIDCApiController extends ApiController {
return $response;
}
+
+ /**
+ * Base64URL encode (RFC 7636 Section 4.2)
+ *
+ * @param string $data
+ * @return string
+ */
+ private function base64UrlEncode(string $data): string
+ {
+ return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
+ }
+
+ /**
+ * Verify PKCE code_verifier against code_challenge (RFC 7636 Section 4.6)
+ *
+ * @param string $codeVerifier
+ * @param string $codeChallenge
+ * @param string $codeChallengeMethod
+ * @return bool
+ */
+ private function verifyPkce(string $codeVerifier, string $codeChallenge, string $codeChallengeMethod): bool
+ {
+ // Validate code_verifier format: 43-128 characters, unreserved chars only
+ if (!preg_match('/^[A-Za-z0-9._~-]{43,128}$/', $codeVerifier)) {
+ return false;
+ }
+
+ // Compute the challenge based on the method
+ if ($codeChallengeMethod === 'S256') {
+ $computedChallenge = $this->base64UrlEncode(hash('sha256', $codeVerifier, true));
+ } elseif ($codeChallengeMethod === 'plain') {
+ $computedChallenge = $codeVerifier;
+ } else {
+ return false;
+ }
+
+ // Constant-time comparison to prevent timing attacks
+ return hash_equals($codeChallenge, $computedChallenge);
+ }
}
diff --git a/lib/Db/AccessToken.php b/lib/Db/AccessToken.php
index a0419c0..593c5c8 100644
--- a/lib/Db/AccessToken.php
+++ b/lib/Db/AccessToken.php
@@ -27,6 +27,10 @@ use OCP\AppFramework\Db\Entity;
* @method void setNonce(string $nonce)
* @method string getResource()
* @method void setResource(string $resource)
+ * @method string getCodeChallenge()
+ * @method void setCodeChallenge(string $codeChallenge)
+ * @method string getCodeChallengeMethod()
+ * @method void setCodeChallengeMethod(string $codeChallengeMethod)
*/
class AccessToken extends Entity
{
@@ -50,6 +54,10 @@ class AccessToken extends Entity
protected $nonce;
/** @var string */
protected $resource;
+ /** @var string */
+ protected $codeChallenge;
+ /** @var string */
+ protected $codeChallengeMethod;
public function __construct() {
$this->addType('id', 'int');
@@ -62,5 +70,7 @@ class AccessToken extends Entity
$this->addType('refreshed', 'int');
$this->addType('nonce', 'string');
$this->addType('resource', 'string');
+ $this->addType('codeChallenge', 'string');
+ $this->addType('codeChallengeMethod', 'string');
}
}
diff --git a/lib/Migration/Version0014Date20251019100100.php b/lib/Migration/Version0014Date20251019100100.php
new file mode 100644
index 0000000..bf705b3
--- /dev/null
+++ b/lib/Migration/Version0014Date20251019100100.php
@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2022-2025 Thorsten Jagel <dev@jagel.net>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCA\OIDCIdentityProvider\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+use Psr\Log\LoggerInterface;
+use OCP\IDBConnection;
+use OCP\DB\Types;
+
+class Version0014Date20251019100100 extends SimpleMigrationStep {
+ private LoggerInterface $logger;
+ private IDBConnection $db;
+
+ public function __construct(
+ IDBConnection $db,
+ LoggerInterface $logger
+ )
+ {
+ $this->db = $db;
+ $this->logger = $logger;
+ }
+
+ /**
+ * @param IOutput $output
+ * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+ * @param array $options
+ * @return null|ISchemaWrapper
+ */
+ public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
+ /** @var ISchemaWrapper $schema */
+ $schema = $schemaClosure();
+
+ $table = $schema->getTable('oidc_access_tokens');
+
+ if(!$table->hasColumn('code_challenge')) {
+ $table->addColumn('code_challenge', Types::STRING, [
+ 'notnull' => false,
+ 'default' => null,
+ 'length' => 128,
+ ]);
+ }
+
+ if(!$table->hasColumn('code_challenge_method')) {
+ $table->addColumn('code_challenge_method', Types::STRING, [
+ 'notnull' => false,
+ 'default' => null,
+ 'length' => 16,
+ ]);
+ }
+
+ return $schema;
+ }
+
+}
diff --git a/lib/Util/DiscoveryGenerator.php b/lib/Util/DiscoveryGenerator.php
index 6429f94..d96a18c 100644
--- a/lib/Util/DiscoveryGenerator.php
+++ b/lib/Util/DiscoveryGenerator.php
@@ -173,7 +173,7 @@ class DiscoveryGenerator
// Add PKCE support if enabled
if ($this->appConfig->getAppValueBool('proof_key_for_code_exchange', false)) {
- $discoveryPayload['code_challenge_methods_supported'] = ['S256'];
+ $discoveryPayload['code_challenge_methods_supported'] = ['S256', 'plain'];
}
$this->logger->info('Request to Discovery Endpoint.');
--
2.51.1
app-hooks/post-installation/install-calendar-app.sh
+2 -2
View File
@@ -15,8 +15,8 @@ sleep 5
# Disable rate limits on calendar creation for integration tests
# Set to -1 to completely disable rate limiting
# Reference: https://docs.nextcloud.com/server/stable/admin_manual/groupware/calendar.html#rate-limits
php occ config:app:set dav rateLimitCalendarCreation --type=integer --value=-1
php occ config:app:set dav rateLimitPeriodCalendarCreation --type=integer --value=-1
php occ config:app:set dav rateLimitCalendarCreation --type=integer --value=100
php occ config:app:set dav rateLimitPeriodCalendarCreation --type=integer --value=-300
php occ config:app:set dav maximumCalendarsSubscriptions --type=integer --value=-1
# Ensure maintenance mode is off before calendar operations
app-hooks/post-installation/install-oidc-app.sh
+2 -1
View File
@@ -11,7 +11,8 @@ php /var/www/html/occ app:enable oidc
php /var/www/html/occ app:enable user_oidc
patch -u /var/www/html/custom_apps/user_oidc/lib/User/Backend.php -i /docker-entrypoint-hooks.d/post-installation/0001-Fix-Bearer-token-authentication-causing-session-logo.patch
patch -u /var/www/html/custom_apps/oidc/lib/Util/DiscoveryGenerator.php -i /docker-entrypoint-hooks.d/post-installation/0002-Add-PKCE-code-challenge-methods-to-discovery-documen.patch
patch -d /var/www/html/custom_apps/oidc -p1 < /docker-entrypoint-hooks.d/post-installation/0001-feat-Advertise-PKCE-support-in-discovery-document.patch
patch -d /var/www/html/custom_apps/oidc -p1 < /docker-entrypoint-hooks.d/post-installation/0002-Initial-implementation-of-PKCE.patch
# Configure OIDC Identity Provider with dynamic client registration enabled
php /var/www/html/occ config:app:set oidc dynamic_client_registration --value='true'
nextcloud_mcp_server/client/calendar.py
+68 -10
View File
@@ -5,6 +5,7 @@ import logging
import uuid
from typing import Any, Dict, List, Optional
import anyio
from caldav.async_collection import AsyncCalendar
from caldav.async_davclient import AsyncDAVClient
from httpx import Auth
@@ -12,8 +13,6 @@ from icalendar import Alarm, Calendar, vRecur
from icalendar import Event as ICalEvent
from icalendar import Todo as ICalTodo
# from .base import retry_on_429
logger = logging.getLogger(__name__)
@@ -53,6 +52,47 @@ class CalendarClient:
"""Close the DAV client connection."""
await self._dav_client.close()
async def _wait_for_calendar_propagation(
self, calendar_name: str, max_attempts: int = 40, initial_delay_ms: int = 100
) -> None:
"""Wait for calendar to propagate through Nextcloud's DAV backend.
After MKCALENDAR succeeds (201), the calendar may not be immediately queryable
due to Nextcloud's internal caching/indexing. This polls until it appears.
Args:
calendar_name: Name of the calendar to wait for
max_attempts: Maximum polling attempts (default: 40)
initial_delay_ms: Initial delay between attempts in ms (default: 100ms)
"""
logger.info(f"Waiting for calendar '{calendar_name}' to propagate...")
delay_ms = initial_delay_ms
for attempt in range(max_attempts):
try:
logger.debug(
f"Attempt {attempt + 1}/{max_attempts} to find calendar '{calendar_name}'..."
)
calendars = await self.list_calendars()
if any(cal["name"] == calendar_name for cal in calendars):
logger.info(
f"Calendar '{calendar_name}' became available after {attempt + 1} attempts"
)
return
except Exception as e:
logger.warning(
f"Attempt {attempt + 1}/{max_attempts} to verify calendar '{calendar_name}' failed: {e}"
)
if attempt < max_attempts - 1:
await anyio.sleep(delay_ms / 1000.0)
# Exponential backoff: double delay up to 2 seconds max
delay_ms = min(delay_ms * 2, 2000)
logger.error(
f"Calendar '{calendar_name}' did not become available after {max_attempts} attempts."
)
# ============= Calendar Operations =============
async def list_calendars(self) -> List[Dict[str, Any]]:
@@ -138,7 +178,6 @@ class CalendarClient:
logger.debug(f"Found {len(result)} calendars")
return result
# @retry_on_429
async def create_calendar(
self,
calendar_name: str,
@@ -146,7 +185,7 @@ class CalendarClient:
description: str = "",
color: str = "#1976D2",
) -> Dict[str, Any]:
"""Create a new calendar."""
"""Create a new calendar with retry on 429 errors."""
# Use direct MKCALENDAR request instead of caldav library's make_calendar
# to avoid XML element issues
calendar_url = (
@@ -168,13 +207,18 @@ class CalendarClient:
</d:set>
</mkcalendar>"""
await self._dav_client.mkcalendar(calendar_url, mkcalendar_body)
# Create calendar via MKCALENDAR request
response = await self._dav_client.mkcalendar(calendar_url, mkcalendar_body)
if response.status != 201:
raise RuntimeError(
f"Failed to create calendar '{calendar_name}': HTTP {response.status}"
)
logger.debug(f"Created calendar: {calendar_name}")
# Wait for Nextcloud to fully register the calendar in its DAV backend
# Without this delay, subsequent operations may fail with "calendar not found"
# Reference: https://github.com/nextcloud/server/issues/...
# Wait for calendar to be queryable (Nextcloud eventual consistency)
await self._wait_for_calendar_propagation(calendar_name)
return {
"name": calendar_name,
@@ -234,9 +278,16 @@ class CalendarClient:
event_uid = str(uuid.uuid4())
ical_content = self._create_ical_event(event_data, event_uid)
event = await calendar.save_event(ical=ical_content)
# save_event returns (event, response) tuple
event, response = await calendar.save_event(ical=ical_content)
if response.status not in [201, 204]:
raise RuntimeError(
f"Failed to create event {event_uid}: HTTP {response.status}"
)
logger.debug(f"Created event {event_uid}")
return {
"uid": event_uid,
"href": str(event.url),
@@ -380,9 +431,16 @@ class CalendarClient:
todo_uid = str(uuid.uuid4())
ical_content = self._create_ical_todo(todo_data, todo_uid)
todo = await calendar.save_todo(ical=ical_content)
# save_todo returns (todo, response) tuple
todo, response = await calendar.save_todo(ical=ical_content)
if response.status not in [201, 204]:
raise RuntimeError(
f"Failed to create todo {todo_uid}: HTTP {response.status}"
)
logger.debug(f"Created todo {todo_uid}")
return {
"uid": todo_uid,
"href": str(todo.url),
tests/client/calendar/test_calendar_operations.py
+20 -48
View File
@@ -1,4 +1,9 @@
"""Integration tests for Calendar CalDAV operations."""
"""Integration tests for Calendar CalDAV operations.
Note: These tests use the shared temporary_calendar fixture from conftest.py
which reuses a session-scoped calendar to avoid Nextcloud rate limiting issues.
Each test cleans up its own events/todos but shares the same calendar.
"""
import logging
import uuid
@@ -15,50 +20,13 @@ logger = logging.getLogger(__name__)
pytestmark = pytest.mark.integration
@pytest.fixture
def test_calendar_name():
"""Unique calendar name for testing."""
return f"test_calendar_{uuid.uuid4().hex[:8]}"
@pytest.fixture
async def temporary_calendar(nc_client: NextcloudClient, test_calendar_name: str):
"""Create a temporary calendar for testing and clean up afterward."""
calendar_name = test_calendar_name
try:
# Create a test calendar
logger.info(f"Creating temporary calendar: {calendar_name}")
result = await nc_client.calendar.create_calendar(
calendar_name=calendar_name,
display_name=f"Test Calendar {calendar_name}",
description="Temporary calendar for integration testing",
color="#FF5722",
)
if result["status_code"] not in [200, 201]:
pytest.skip(f"Failed to create temporary calendar: {result}")
logger.info(f"Created temporary calendar: {calendar_name}")
yield calendar_name
except Exception as e:
logger.error(f"Error setting up temporary calendar: {e}")
pytest.skip(f"Calendar setup failed: {e}")
finally:
# Cleanup: Delete the temporary calendar
try:
logger.info(f"Cleaning up temporary calendar: {calendar_name}")
await nc_client.calendar.delete_calendar(calendar_name)
logger.info(f"Successfully deleted temporary calendar: {calendar_name}")
except Exception as e:
logger.error(f"Error deleting temporary calendar {calendar_name}: {e}")
@pytest.fixture
async def temporary_event(nc_client: NextcloudClient, temporary_calendar: str):
"""Create a temporary event for testing and clean up afterward."""
"""Create a temporary event for testing and clean up afterward.
Uses the shared temporary_calendar fixture from conftest.py which reuses
a session-scoped calendar to avoid Nextcloud rate limiting.
"""
event_uid = None
calendar_name = temporary_calendar
@@ -351,11 +319,11 @@ async def test_get_nonexistent_event(
calendar_name = temporary_calendar
fake_uid = f"nonexistent-{uuid.uuid4()}"
with pytest.raises(HTTPStatusError) as exc_info:
# caldav library raises generic Exception for missing events, not HTTPStatusError
with pytest.raises(Exception, match="not found"):
await nc_client.calendar.get_event(calendar_name, fake_uid)
assert exc_info.value.response.status_code == 404
logger.info(f"Correctly got 404 for nonexistent event: {fake_uid}")
logger.info(f"Correctly raised exception for nonexistent event: {fake_uid}")
async def test_delete_nonexistent_event(
@@ -420,7 +388,11 @@ async def test_calendar_operations_error_handling(
# Test with non-existent calendar
fake_calendar = f"nonexistent_calendar_{uuid.uuid4().hex}"
with pytest.raises(HTTPStatusError):
await nc_client.calendar.get_calendar_events(fake_calendar)
# caldav library returns empty list for non-existent calendars, doesn't raise
# Testing that it doesn't crash and returns empty results
events = await nc_client.calendar.get_calendar_events(fake_calendar)
assert isinstance(events, list)
# Empty list is expected for non-existent calendar
assert len(events) == 0
logger.info("Error handling tests completed successfully")
tests/client/calendar/test_field_preservation.py
+47 -57
View File
@@ -15,7 +15,7 @@ logger = logging.getLogger(__name__)
@pytest.mark.integration
async def test_calendar_event_custom_fields_preservation(nc_client):
"""Test that demonstrates loss of non-supported iCal fields during round-trip operations."""
"""Test that custom iCal fields are preserved during round-trip update operations."""
calendar_name = "personal"
# Create an event with standard fields
@@ -32,7 +32,12 @@ async def test_calendar_event_custom_fields_preservation(nc_client):
event_uid = result["uid"]
try:
# Now manually inject a custom iCal property by creating a new version with raw iCal
# Get the calendar object from the caldav library
calendar = nc_client.calendar._get_calendar(calendar_name)
event = await calendar.event_by_uid(event_uid)
await event.load()
# Now manually inject custom iCal properties into the raw data
# This simulates what would happen if the event was created by another CalDAV client
# with extended properties
custom_ical = f"""BEGIN:VCALENDAR
@@ -57,22 +62,15 @@ LAST-MODIFIED:{datetime.now().strftime("%Y%m%dT%H%M%SZ")}
END:VEVENT
END:VCALENDAR"""
# Direct CalDAV PUT to inject the custom iCal
event_path = f"/remote.php/dav/calendars/{nc_client.calendar.username}/{calendar_name}/{event_uid}.ics"
await nc_client.calendar._make_request(
"PUT",
event_path,
content=custom_ical,
headers={"Content-Type": "text/calendar; charset=utf-8"},
)
# Update the event's raw data and save
event.data = custom_ical
await event.save()
logger.info(f"Injected custom iCal properties into event {event_uid}")
# Retrieve the event to confirm custom fields are present in raw iCal
response = await nc_client.calendar._make_request(
"GET", event_path, headers={"Accept": "text/calendar"}
)
raw_ical_before = response.text
# Reload the event to confirm custom fields are present
await event.load()
raw_ical_before = event.data
logger.info("Raw iCal before update:")
logger.info(raw_ical_before)
@@ -93,31 +91,24 @@ END:VCALENDAR"""
await nc_client.calendar.update_event(calendar_name, event_uid, update_data)
logger.info(f"Updated event {event_uid} through MCP client")
# Retrieve the event again to see if custom fields survived
response_after = await nc_client.calendar._make_request(
"GET", event_path, headers={"Accept": "text/calendar"}
)
raw_ical_after = response_after.text
# Reload the event to see if custom fields survived
await event.load()
raw_ical_after = event.data
logger.info("Raw iCal after update:")
logger.info(raw_ical_after)
# THIS IS THE TEST THAT SHOULD FAIL - custom fields should be preserved but won't be
try:
assert (
"X-CUSTOM-FIELD:This is a custom field that should be preserved"
in raw_ical_after
), "Custom field X-CUSTOM-FIELD was lost during round-trip update"
assert "X-VENDOR-SPECIFIC:Vendor specific data" in raw_ical_after, (
"Custom field X-VENDOR-SPECIFIC was lost during round-trip update"
)
logger.info(
"✓ Custom fields were preserved (unexpected - this should fail with current implementation)"
)
except AssertionError as e:
logger.error(f"✗ Custom fields were lost during round-trip update: {e}")
# Re-raise to show the test failure
raise
# THIS IS THE CRITICAL TEST - custom fields should be preserved
assert (
"X-CUSTOM-FIELD:This is a custom field that should be preserved"
in raw_ical_after
), "Custom field X-CUSTOM-FIELD was lost during round-trip update"
assert "X-VENDOR-SPECIFIC:Vendor specific data" in raw_ical_after, (
"Custom field X-VENDOR-SPECIFIC was lost during round-trip update"
)
logger.info("✓ Custom fields were preserved during update")
finally:
# Cleanup
@@ -299,7 +290,7 @@ END:VCARD"""
@pytest.mark.integration
async def test_calendar_event_roundtrip_data_loss_demonstration(nc_client):
"""Demonstrates specific data loss scenarios in calendar events."""
"""Test that extended iCal properties are preserved during round-trip update operations."""
calendar_name = "personal"
event_data = {
@@ -313,6 +304,11 @@ async def test_calendar_event_roundtrip_data_loss_demonstration(nc_client):
event_uid = result["uid"]
try:
# Get the calendar object and event
calendar = nc_client.calendar._get_calendar(calendar_name)
event = await calendar.event_by_uid(event_uid)
await event.load()
# Inject additional iCal properties that are valid but not supported by our parser
extended_ical = f"""BEGIN:VCALENDAR
VERSION:2.0
@@ -342,20 +338,13 @@ LAST-MODIFIED:{datetime.now().strftime("%Y%m%dT%H%M%SZ")}
END:VEVENT
END:VCALENDAR"""
# Inject the extended iCal
event_path = f"/remote.php/dav/calendars/{nc_client.calendar.username}/{calendar_name}/{event_uid}.ics"
await nc_client.calendar._make_request(
"PUT",
event_path,
content=extended_ical,
headers={"Content-Type": "text/calendar; charset=utf-8"},
)
# Update the event's raw data and save
event.data = extended_ical
await event.save()
# Verify extended properties are present
response = await nc_client.calendar._make_request(
"GET", event_path, headers={"Accept": "text/calendar"}
)
original_ical = response.text
# Reload to verify extended properties are present
await event.load()
original_ical = event.data
# Confirm extended properties exist
extended_properties = [
@@ -392,11 +381,9 @@ END:VCALENDAR"""
update_data = {"location": "Conference Room B"} # Simple location change
await nc_client.calendar.update_event(calendar_name, event_uid, update_data)
# Check what survived the round-trip
response_after = await nc_client.calendar._make_request(
"GET", event_path, headers={"Accept": "text/calendar"}
)
updated_ical = response_after.text
# Reload the event to check what survived the round-trip
await event.load()
updated_ical = event.data
logger.info("Checking which properties survived the update...")
@@ -423,13 +410,16 @@ END:VCALENDAR"""
lost.append(prop)
logger.info(f"Properties that SURVIVED: {survived}")
logger.error(f"Properties that were LOST: {lost}")
if lost:
logger.error(f"Properties that were LOST: {lost}")
# This test should fail - we expect data loss
# Assert that all extended properties were preserved
assert len(lost) == 0, (
f"Round-trip update lost {len(lost)} extended properties: {lost}"
)
logger.info("✓ All extended properties preserved during update")
finally:
try:
await nc_client.calendar.delete_event(calendar_name, event_uid)
uv.lock
Generated
+2 -2
View File
@@ -54,8 +54,8 @@ wheels = [
[[package]]
name = "caldav"
version = "2.0.2.dev33+g4877e4688"
source = { git = "https://github.com/cbcoutinho/caldav?branch=feature%2Fhttpx#4877e46884dbd2bc54f8fb61ee5d056342605e9c" }
version = "2.0.2.dev36+g2ac7492e5"
source = { git = "https://github.com/cbcoutinho/caldav?branch=feature%2Fhttpx#2ac7492e5b1005bdc7de78ce5fdc03b22449a806" }
dependencies = [
{ name = "httpx", extra = ["http2"] },
{ name = "icalendar" },