[Bug]: Validation error in iCalendar: TRIGGER MUST appear exactly once in a VALARM component

brianjmurrell commented 4 months ago

⚠️ This issue respects the following points: ⚠️

[X] This is a bug, not a question or a configuration/webserver/proxy issue.
[X] This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
[X] Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
[X] I agree to follow Nextcloud's Code of Conduct.

Bug description

Frequently getting a message in the server log:

Validation error in iCalendar: TRIGGER MUST appear exactly once in a VALARM component

But as far as I can tell, the calendar entry that it's reporting about conforms to the validation requirement:

BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:-//Sabre//Sabre VObject 4.5.4//EN
BEGIN:VEVENT
UID:f9b5b6ca42cf624b1c11bff4d206a686
DTSTART:20240416T120000
DTEND:20240416T130000
SUMMARY:[redacted]
DESCRIPTION:[redacted]
CREATED:20240411T134539Z
DTSTAMP:20240411T134539Z
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:[redacted]
TRIGGER;RELATED=START:-PT15M
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:[redacted]
TRIGGER;RELATED=START:-PT1D
END:VALARM
END:VEVENT
END:VCALENDAR

That looks to me like TRIGGER is only appearing exactly once in each of those VALARM components.

Steps to reproduce

Not entirely clear. Just create a calendar event with the same structure as above I suppose.

Expected behavior

Should not emit invalid warnings.

Installation method

Other Community project

Nextcloud Server version

29

Operating system

RHEL/CentOS

PHP engine version

PHP 8.0

Web server

Apache (supported)

Database engine version

MySQL

Is this bug present after an update or on a fresh install?

Updated from a MINOR version (ex. 22.1 to 22.2)

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

[X] Default user-backend (database)
[ ] LDAP/ Active Directory
[ ] SSO - SAML
[ ] Other

Configuration report

{
    "system": {
        "log_type": "syslog",
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "updatechecker": false,
        "check_for_working_htaccess": false,
        "asset-pipeline.enabled": false,
        "assetdirectory": "\/var\/lib\/nextcloud",
        "preview_libreoffice_path": "\/usr\/bin\/libreoffice",
        "apps_paths": [
            {
                "path": "\/usr\/share\/nextcloud\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/lib\/nextcloud\/apps",
                "url": "\/apps-appstore",
                "writable": true
            }
        ],
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "owncloud.example.com",
            "www.example.com"
        ],
        "overwrite.cli.url": "http:\/\/owncloud.example.com\/",
        "dbtype": "mysql",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "version": "29.0.0.19",
        "installed": true,
        "theme": "",
        "maintenance": false,
        "forcessl": false,
        "loglevel": 1,
        "log_authfailip": true,
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "trashbin_retention_obligation": "auto",
        "htaccess.RewriteBase": "\/",
        "appstore.experimental.enabled": true,
        "mysql.utf8mb4": true
    }
}

List of activated Apps

Enabled:
  - activity: 2.21.1
  - calendar: 4.7.3
  - circles: 29.0.0-dev
  - cloud_federation_api: 1.12.0
  - comments: 1.19.0
  - contacts: 6.0.0
  - contactsinteraction: 1.10.0
  - dashboard: 7.9.0
  - dav: 1.30.1
  - federatedfilesharing: 1.19.0
  - federation: 1.19.0
  - files: 2.1.0
  - files_downloadlimit: 2.0.0
  - files_pdfviewer: 2.10.0
  - files_reminders: 1.2.0
  - files_sharing: 1.21.0
  - files_trashbin: 1.19.0
  - files_versions: 1.22.0
  - firstrunwizard: 2.18.0
  - logreader: 2.14.0
  - lookup_server_connector: 1.17.0
  - nextcloud_announcements: 1.18.0
  - notes: 4.10.0
  - notifications: 2.17.0
  - oauth2: 1.17.0
  - password_policy: 1.19.0
  - photos: 2.5.0
  - privacy: 1.13.0
  - provisioning_api: 1.19.0
  - recommendations: 2.1.0
  - related_resources: 1.4.0
  - serverinfo: 1.19.0
  - settings: 1.12.0
  - sharebymail: 1.19.0
  - support: 1.12.0
  - survey_client: 1.17.0
  - systemtags: 1.19.0
  - text: 3.10.0
  - theming: 2.4.0
  - twofactor_backupcodes: 1.18.0
  - updatenotification: 1.19.1
  - user_status: 1.9.0
  - viewer: 2.3.0
  - weather_status: 1.9.0
  - workflowengine: 2.11.0
Disabled:
  - admin_audit: 1.19.0
  - bruteforcesettings: 2.9.0
  - encryption: 2.17.0
  - files_external: 1.21.0
  - files_rightclick: 0.15.1 (installed 1.6.0)
  - files_texteditor: 2.15.1 (installed 2.15.1)
  - suspicious_login: 7.0.0
  - twofactor_totp: 11.0.0-dev
  - user_ldap: 1.20.0 (installed 1.14.1)

Nextcloud Signing status

No response

Nextcloud Logs

{"reqId":"Zkd8EYMn0F7rKyEDPu20pwAAAAQ","level":3,"time":"2024-05-17T15:47:30+00:00","remoteAddr":"10.75.22.132","user":"brian","app":"webdav","method":"PUT","url":"/remote.php/dav/calendars/brian/private/[redacted].ics","message":"{\"Exception\":\"Sabre\\\\DAV\\\\Exception\\\\UnsupportedMediaType\",\"Message\":\"Validation error in iCalendar: TRIGGER MUST appear exactly once in a VALARM component\",\"Code\":0,\"Trace\":[{\"file\":\"/usr/share/nextcloud/3rdparty/sabre/dav/lib/CalDAV/Plugin.php\",\"line\":739,\"function\":\"validateICalendar\",\"class\":\"Sabre\\\\CalDAV\\\\Plugin\",\"type\":\"->\",\"args\":[\"*** sensitive parameters replaced ***\",\"*** sensitive parameters replaced ***\",false,[\"Sabre\\\\HTTP\\\\Request\"],[\"Sabre\\\\HTTP\\\\Response\"],false]},{\"file\":\"/usr/share/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php\",\"line\":89,\"function\":\"beforeWriteContent\",\"class\":\"Sabre\\\\CalDAV\\\\Plugin\",\"type\":\"->\",\"args\":[\"*** sensitive parameters replaced ***\",[\"OCA\\\\DAV\\\\CalDAV\\\\CalendarObject\"],\"*** sensitive parameters replaced ***\",false]},{\"file\":\"/usr/share/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php\",\"line\":1133,\"function\":\"emit\",\"class\":\"Sabre\\\\DAV\\\\Server\",\"type\":\"->\",\"args\":[\"beforeWriteContent\",[\"*** sensitive parameters replaced ***\",[\"OCA\\\\DAV\\\\CalDAV\\\\CalendarObject\"],\"*** sensitive parameters replaced ***\",false]]},{\"file\":\"/usr/share/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php\",\"line\":492,\"function\":\"updateFile\",\"class\":\"Sabre\\\\DAV\\\\Server\",\"type\":\"->\",\"args\":[\"*** sensitive parameters replaced ***\"]},{\"file\":\"/usr/share/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php\",\"line\":89,\"function\":\"httpPut\",\"class\":\"Sabre\\\\DAV\\\\CorePlugin\",\"type\":\"->\",\"args\":[[\"Sabre\\\\HTTP\\\\Request\"],[\"Sabre\\\\HTTP\\\\Response\"]]},{\"file\":\"/usr/share/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php\",\"line\":472,\"function\":\"emit\",\"class\":\"Sabre\\\\DAV\\\\Server\",\"type\":\"->\",\"args\":[\"method:PUT\",[[\"Sabre\\\\HTTP\\\\Request\"],[\"Sabre\\\\HTTP\\\\Response\"]]]},{\"file\":\"/usr/share/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php\",\"line\":253,\"function\":\"invokeMethod\",\"class\":\"Sabre\\\\DAV\\\\Server\",\"type\":\"->\",\"args\":[[\"Sabre\\\\HTTP\\\\Request\"],[\"Sabre\\\\HTTP\\\\Response\"]]},{\"file\":\"/usr/share/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php\",\"line\":321,\"function\":\"start\",\"class\":\"Sabre\\\\DAV\\\\Server\",\"type\":\"->\",\"args\":[]},{\"file\":\"/usr/share/nextcloud/apps/dav/lib/Server.php\",\"line\":374,\"function\":\"exec\",\"class\":\"Sabre\\\\DAV\\\\Server\",\"type\":\"->\",\"args\":[]},{\"file\":\"/usr/share/nextcloud/apps/dav/appinfo/v2/remote.php\",\"line\":35,\"function\":\"exec\",\"class\":\"OCA\\\\DAV\\\\Server\",\"type\":\"->\",\"args\":[]},{\"file\":\"/usr/share/nextcloud/remote.php\",\"line\":172,\"args\":[\"/usr/share/nextcloud/apps/dav/appinfo/v2/remote.php\"],\"function\":\"require_once\"}],\"File\":\"/usr/share/nextcloud/3rdparty/sabre/dav/lib/CalDAV/Plugin.php\",\"Line\":873,\"message\":\"Validation error in iCalendar: TRIGGER MUST appear exactly once in a VALARM component\",\"exception\":{},\"CustomMessage\":\"Validation error in iCalendar: TRIGGER MUST appear exactly once in a VALARM component\"}","userAgent":"Evolution/3.52.1","version":"29.0.0.19"}

Additional info

No response

britzke commented 3 months ago

I see the same errors in my console periodically

Mase3206 commented 1 month ago

I have a similar error, but it complains about ACTION instead of TRIGGER:

UnsupportedMediaType Validation error in iCalendar: ACTION MUST appear exactly once in a VALARM component

I manage most of my calendar events through iCloud calendar on my Apple devices, which allow setting multiple notifications per event (once 30m before start, again 15m before start). The error I'm getting leads me to suspect that this is the culprit.

nextcloud / server