Can't RSVP to events when the username includes blank spaces

[tikoflano]

Steps to reproduce

1. Create usar with the username "Awesome Name" (username, not display name)
2. This user sends and invitation to an event to other user with username "normalusername"
3. "normalusername" receives the email with the invite and Accepts it (or Rejects, whatever)
4. The webpage opened (in the form https://mynextcloud.com/apps/dav/invitation/accept/pQMHNRLp3ap2NwPAIL6NKkvpUue5Po6oztiWmiNbznETYazJhncMsR4CU3LF) shows "Internal Server Error"
5. Logs shows "Sabre\DAV\Exception\NotFound: Principal with name Awesome%20Name not found"

Expected behaviour

You should be able to RSVP the event

Actual behaviour

Internal Server Error

Server configuration

Operating system: Linux 3.10.0-957.10.1.el7.x86_64 nextcloud/calendar#1 SMP Mon Mar 18 15:06:45 UTC 2019 x86_64

Web server: Apache/2.4.38 (Debian) (apache2handler)

Database: mysql 10.4.7

PHP version: 7.3.8

Server version: 16.0.4 - 16.0.4.1

Calendar version: 1.7.0

Login as admin user into your cloud and access
http://example.com/index.php/settings/integrity/failed
paste the results here.

No errors have been found.

List of activated apps:

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your instance's installation folder

Enabled:  - accessibility: 1.2.0  - activity: 2.9.1  - announcementcenter: 3.5.1  - apporder: 0.7.1  - audioplayer: 2.7.2  - bookmarks: 1.1.1  - bruteforcesettings: 1.4.0  - calendar: 1.7.0  - checksum: 0.4.3  - circles: 0.17.7  - cloud_federation_api: 0.2.0  - comments: 1.6.0  - contacts: 3.1.3  - cospend: 0.1.0  - dav: 1.9.2  - deck: 0.6.6  - drawio: 0.9.3  - external: 3.3.0  - extract: 1.2.0  - federatedfilesharing: 1.6.0  - federation: 1.6.0  - files: 1.11.0  - files_accesscontrol: 1.6.0  - files_antivirus: 2.1.1  - files_automatedtagging: 1.6.0  - files_external: 1.7.0  - files_frommail: 0.2.0  - files_mindmap: 0.0.15  - files_pdfviewer: 1.5.0  - files_retention: 1.5.1  - files_sharing: 1.8.0  - files_texteditor: 2.8.0  - files_trashbin: 1.6.0  - files_versions: 1.9.0  - files_videoplayer: 1.5.0  - firstrunwizard: 2.5.0  - forms: 1.0.3  - gallery: 18.3.0  - group_everyone: 0.1.3  - groupfolders: 4.1.0  - guests: 1.1.1  - impersonate: 1.3.0  - issuetemplate: 0.5.0  - keeweb: 0.5.1  - logreader: 2.1.0  - lookup_server_connector: 1.4.0  - nextcloud_announcements: 1.5.0  - notes: 3.0.1  - notifications: 2.4.1  - oauth2: 1.4.2  - occweb: 0.0.4  - onlyoffice: 2.4.0  - password_policy: 1.6.0  - phonetrack: 0.5.2  - polls: 0.10.2  - privacy: 1.0.0  - provisioning_api: 1.6.0  - quickaccesssorting: 1.0.1  - recommendations: 0.4.0  - serverinfo: 1.6.0  - sharebymail: 1.6.0  - spreed: 6.0.4  - support: 1.0.0  - survey_client: 1.4.0  - systemtags: 1.6.0  - tasks: 0.11.1  - theming: 1.7.0  - twofactor_backupcodes: 1.5.0  - updatenotification: 1.6.0  - video_converter: 0.1.0  - viewer: 1.1.0  - w2g2: 2.2.8  - workflowengine: 1.6.0Disabled:  - admin_audit  - encryption  - event_update_notification  - files_frommail.bak  - files_rightclick  - user_ldap

Nextcloud configuration:

If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your instance's installation folder

{    "system": {        "htaccess.RewriteBase": "\/",        "memcache.local": "\\OC\\Memcache\\APCu",        "apps_paths": [            {                "path": "\/var\/www\/html\/apps",                "url": "\/apps",                "writable": false            },            {                "path": "\/var\/www\/html\/custom_apps",                "url": "\/custom_apps",                "writable": true            }        ],        "memcache.distributed": "\\OC\\Memcache\\Redis",        "memcache.locking": "\\OC\\Memcache\\Redis",        "redis": {            "host": "***REMOVED SENSITIVE VALUE***",            "port": 6379        },        "mail_smtpmode": "smtp",        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",        "mail_smtpport": 25,        "mail_smtpsecure": "",        "mail_smtpauth": false,        "mail_smtpauthtype": "LOGIN",        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",        "mail_from_address": "***REMOVED SENSITIVE VALUE***",        "mail_domain": "***REMOVED SENSITIVE VALUE***",        "passwordsalt": "***REMOVED SENSITIVE VALUE***",        "secret": "***REMOVED SENSITIVE VALUE***",        "trusted_domains": [            "localhost",            "nextcloud.hosting.cl"        ],        "datadirectory": "***REMOVED SENSITIVE VALUE***",        "dbtype": "mysql",        "version": "16.0.4.1",        "overwrite.cli.url": "https:\/\/nextcloud.hosting.cl",        "dbname": "***REMOVED SENSITIVE VALUE***",        "dbhost": "***REMOVED SENSITIVE VALUE***",        "dbport": "",        "dbtableprefix": "",        "mysql.utf8mb4": true,        "dbuser": "***REMOVED SENSITIVE VALUE***",        "dbpassword": "***REMOVED SENSITIVE VALUE***",        "installed": true,        "instanceid": "***REMOVED SENSITIVE VALUE***",        "overwriteprotocol": "https",        "forwarded_for_headers": [            "HTTP_X_FORWARDED_FOR"        ],        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",        "default_locale": "es_CL",        "skeletondirectory": "\/var\/www\/html\/data\/admin\/files\/Base",        "app_install_overwrite": [            "occweb",            "w2g2"        ],        "updatechecker": "true",        "has_internet_connection": "true",        "theme": "",        "maintenance": false,        "loglevel": 2,        "csrf.optout": {            "1": "\/\\bKeeWeb\\b\/"        }    }}

Are you using external storage, if yes which one: no

Are you using encryption: no

Are you using an external user-backend, if yes which one: no

Client configuration

Browser: Any

Operating system: Any

Logs

Log file (data/nextcloud.log)

{"reqId":"OQbuwIMJUwQhHxaEdBuc","level":3,"time":"2019-08-26T22:18:51+00:00","remoteAddr":"192.168.120.185","user":"alvaro","app":"index","method":"GET","url":"\/apps\/dav\/invitation\/accept\/pQMHNRLp3ap2NwPAIL6NKkvpUue5Po6oztiWmiNbznETYazJhncMsR4CU3LF","message":{"Exception":"Sabre\\DAV\\Exception\\NotFound","Message":"Principal with name Tomy%20Casamayor not found","Code":0,"Trace":[{"file":"\/var\/www\/html\/3rdparty\/sabre\/dav\/lib\/DAV\/Tree.php","line":76,"function":"getChild","class":"Sabre\\DAVACL\\AbstractPrincipalCollection","type":"->","args":["Tomy%20Casamayor"]},{"file":"\/var\/www\/html\/3rdparty\/sabre\/dav\/lib\/DAV\/Tree.php","line":71,"function":"getNodeForPath","class":"Sabre\\DAV\\Tree","type":"->","args":["calendars\/Tomy%20Casamayor"]},{"file":"\/var\/www\/html\/3rdparty\/sabre\/dav\/lib\/DAVACL\/Plugin.php","line":621,"function":"getNodeForPath","class":"Sabre\\DAV\\Tree","type":"->","args":["calendars\/Tomy%20Casamayor\/inbox"]},{"file":"\/var\/www\/html\/3rdparty\/sabre\/dav\/lib\/DAVACL\/Plugin.php","line":196,"function":"getCurrentUserPrivilegeSet","class":"Sabre\\DAVACL\\Plugin","type":"->","args":["calendars\/Tomy%20Casamayor\/inbox\/"]},{"file":"\/var\/www\/html\/apps\/dav\/lib\/Connector\/Sabre\/DavAclPlugin.php","line":49,"function":"checkPrivileges","class":"Sabre\\DAVACL\\Plugin","type":"->","args":["calendars\/Tomy%20Casamayor\/inbox\/",["{urn:ietf:params:xml:ns:caldav}schedule-deliver-reply"],1,false]},{"file":"\/var\/www\/html\/3rdparty\/sabre\/dav\/lib\/CalDAV\/Schedule\/Plugin.php","line":506,"function":"checkPrivileges","class":"OCA\\DAV\\Connector\\Sabre\\DavAclPlugin","type":"->","args":["calendars\/Tomy%20Casamayor\/inbox\/","{urn:ietf:params:xml:ns:caldav}schedule-deliver-reply",1,false]},{"file":"\/var\/www\/html\/apps\/dav\/lib\/CalDAV\/InvitationResponse\/InvitationResponseServer.php","line":116,"function":"scheduleLocalDelivery","class":"Sabre\\CalDAV\\Schedule\\Plugin","type":"->","args":[{"uid":"YP71EG8J5T2DS18BLP9LL","component":"VEVENT","method":"REPLY","sequence":null,"sender":"mailto:[email protected]","senderName":null,"recipient":"mailto:[email protected]","recipientName":null,"scheduleStatus":null,"message":{"name":"VCALENDAR","parent":null,"__class__":"Sabre\\VObject\\Component\\VCalendar"},"significantChange":true,"__class__":"Sabre\\VObject\\ITip\\Message"}]},{"file":"\/var\/www\/html\/apps\/dav\/lib\/Controller\/InvitationResponseController.php","line":81,"function":"handleITipMessage","class":"OCA\\DAV\\CalDAV\\InvitationResponse\\InvitationResponseServer","type":"->","args":[{"uid":"YP71EG8J5T2DS18BLP9LL","component":"VEVENT","method":"REPLY","sequence":null,"sender":"mailto:[email protected]","senderName":null,"recipient":"mailto:[email protected]","recipientName":null,"scheduleStatus":null,"message":{"name":"VCALENDAR","parent":null,"__class__":"Sabre\\VObject\\Component\\VCalendar"},"significantChange":true,"__class__":"Sabre\\VObject\\ITip\\Message"}]},{"file":"\/var\/www\/html\/lib\/private\/AppFramework\/Http\/Dispatcher.php","line":166,"function":"accept","class":"OCA\\DAV\\Controller\\InvitationResponseController","type":"->","args":["pQMHNRLp3ap2NwPAIL6NKkvpUue5Po6oztiWmiNbznETYazJhncMsR4CU3LF"]},{"file":"\/var\/www\/html\/lib\/private\/AppFramework\/Http\/Dispatcher.php","line":99,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\DAV\\Controller\\InvitationResponseController"},"accept"]},{"file":"\/var\/www\/html\/lib\/private\/AppFramework\/App.php","line":126,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\DAV\\Controller\\InvitationResponseController"},"accept"]},{"file":"\/var\/www\/html\/lib\/private\/AppFramework\/Routing\/RouteActionHandler.php","line":47,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\DAV\\Controller\\InvitationResponseController","accept",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"token":"pQMHNRLp3ap2NwPAIL6NKkvpUue5Po6oztiWmiNbznETYazJhncMsR4CU3LF","_route":"dav.invitation_response.accept"}]},{"function":"__invoke","class":"OC\\AppFramework\\Routing\\RouteActionHandler","type":"->","args":[{"token":"pQMHNRLp3ap2NwPAIL6NKkvpUue5Po6oztiWmiNbznETYazJhncMsR4CU3LF","_route":"dav.invitation_response.accept"}]},{"file":"\/var\/www\/html\/lib\/private\/Route\/Router.php","line":297,"function":"call_user_func","args":[{"__class__":"OC\\AppFramework\\Routing\\RouteActionHandler"},{"token":"pQMHNRLp3ap2NwPAIL6NKkvpUue5Po6oztiWmiNbznETYazJhncMsR4CU3LF","_route":"dav.invitation_response.accept"}]},{"file":"\/var\/www\/html\/lib\/base.php","line":975,"function":"match","class":"OC\\Route\\Router","type":"->","args":["\/apps\/dav\/invitation\/accept\/pQMHNRLp3ap2NwPAIL6NKkvpUue5Po6oztiWmiNbznETYazJhncMsR4CU3LF"]},{"file":"\/var\/www\/html\/index.php","line":42,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"\/var\/www\/html\/3rdparty\/sabre\/dav\/lib\/DAVACL\/AbstractPrincipalCollection.php","Line":118,"CustomMessage":"--"},"userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/76.0.3809.100 Safari\/537.36","version":"16.0.4.1"}

[tikoflano]

In the database, the table "calendars" have the record "principals/users/Awesome Name".

I suspect that URI encoding is messing things up?

[iexos]

This is very likely related to nextcloud/calendar#2199

[szaimen]

Hi, please update to 24.0.8 or better 25.0.2 and report back if it fixes the issue. Thank you!