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♻️(sabredav) improve HttpCallbackIMipPlugin

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Enhance IMIP plugin with better error handling, logging
and support for all scheduling methods (REQUEST, REPLY,
CANCEL). Update server configuration and SQL schema.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Nathan Panchout
2026-01-25 20:33:28 +01:00
parent 5893d30996
commit 1182400fb2
3 changed files with 83 additions and 17 deletions
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54
docker/sabredav/server.php
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@@ -12,6 +12,7 @@ use Sabre\DAV;
use Calendars\SabreDav\AutoCreatePrincipalBackend;
use Calendars\SabreDav\HttpCallbackIMipPlugin;
use Calendars\SabreDav\ApiKeyAuthBackend;
use Calendars\SabreDav\AttendeeNormalizerPlugin;
// Composer autoloader
require_once __DIR__ . '/vendor/autoload.php';
@@ -77,15 +78,64 @@ $server->addPlugin(new CardDAV\Plugin());
$server->addPlugin(new DAVACL\Plugin());
$server->addPlugin(new DAV\Browser\Plugin());
// Add ICS export plugin for iCal subscription URLs
// Allows exporting calendars as .ics files via ?export query parameter
// See https://sabre.io/dav/ics-export-plugin/
$server->addPlugin(new CalDAV\ICSExportPlugin());
// Add sharing support
// See https://sabre.io/dav/caldav-sharing/
// Note: Order matters! CalDAV\SharingPlugin must come after DAV\Sharing\Plugin
$server->addPlugin(new DAV\Sharing\Plugin());
$server->addPlugin(new CalDAV\SharingPlugin());
// Debug logging for sharing requests
$server->on('method:POST', function($request) {
$contentType = $request->getHeader('Content-Type');
$path = $request->getPath();
$body = $request->getBodyAsString();
error_log("[sabre/dav] POST request received:");
error_log("[sabre/dav] Path: " . $path);
error_log("[sabre/dav] Content-Type: " . $contentType);
error_log("[sabre/dav] Body: " . substr($body, 0, 1000));
// Reset body stream position
$request->setBody($body);
}, 50); // Priority 50 to run early
// Debug: Log when share plugin processes request
$server->on('afterMethod:POST', function($request, $response) {
error_log("[sabre/dav] POST response status: " . $response->getStatus());
$body = $response->getBodyAsString();
if ($body) {
error_log("[sabre/dav] POST response body: " . substr($body, 0, 500));
}
}, 50);
// Debug: Log exceptions
$server->on('exception', function($e) {
error_log("[sabre/dav] Exception: " . get_class($e) . " - " . $e->getMessage());
error_log("[sabre/dav] Exception trace: " . $e->getTraceAsString());
}, 50);
// Add attendee normalizer plugin to fix duplicate attendees issue
// This plugin normalizes attendee emails (lowercase) and deduplicates them
// when processing calendar objects, fixing issues with REPLY handling
$server->addPlugin(new AttendeeNormalizerPlugin());
// Add custom IMipPlugin that forwards scheduling messages via HTTP callback
// This MUST be added BEFORE the Schedule\Plugin so that Schedule\Plugin finds it
// The callback URL must be provided per-request via X-CalDAV-Callback-URL header
// The callback URL can be provided per-request via X-CalDAV-Callback-URL header
// or via CALDAV_CALLBACK_URL environment variable as fallback
$callbackApiKey = getenv('CALDAV_INBOUND_API_KEY');
if (!$callbackApiKey) {
error_log("[sabre/dav] CALDAV_INBOUND_API_KEY environment variable is required for scheduling callback");
exit(1);
}
$imipPlugin = new HttpCallbackIMipPlugin($callbackApiKey);
$defaultCallbackUrl = getenv('CALDAV_CALLBACK_URL') ?: null;
if ($defaultCallbackUrl) {
error_log("[sabre/dav] Using default callback URL for scheduling: {$defaultCallbackUrl}");
}
$imipPlugin = new HttpCallbackIMipPlugin($callbackApiKey, $defaultCallbackUrl);
$server->addPlugin($imipPlugin);
// Add CalDAV scheduling support