Multiple group memberships do not work

[h2o-commits]

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Steps to reproduce

1. Install Nextcloud (here 31.0.7) and USER_SAML app (here: 7.0.0)
2. Configure a SAML Identity Provider
3. Use multiple group files

Expected behaviour

Multiple group memberships do not work anymore.

Actual behaviour

Each group field should result in a separate group membership, however existing group memberships will be overwritten/deleted. If only one group field is provided via SAML, the function works correctly.

Server configuration

Web server: Apache

Database: sqlite

PHP version: 31.0.7

Nextcloud version: (see Nextcloud admin page)

List of activated apps

Enabled: - activity: 4.0.0 - app_api: 5.0.2 - bruteforcesettings: 4.0.0 - calendar: 5.5.3 - circles: 31.0.0 - cloud_federation_api: 1.14.0 - comments: 1.21.0 - contacts: 7.3.0 - contactsinteraction: 1.12.0 - dashboard: 7.11.0 - dav: 1.33.0 - federatedfilesharing: 1.21.0 - federation: 1.21.0 - files: 2.3.1 - files_downloadlimit: 4.0.0 - files_pdfviewer: 4.0.0 - files_reminders: 1.4.0 - files_sharing: 1.23.1 - files_trashbin: 1.21.0 - files_versions: 1.24.0 - firstrunwizard: 4.0.0 - logreader: 4.0.0 - lookup_server_connector: 1.19.0 - mail: 5.4.0 - nextcloud_announcements: 3.0.0 - notes: 4.12.3 - notifications: 4.0.0 - oauth2: 1.19.1 - password_policy: 3.0.0 - photos: 4.0.0 - privacy: 3.0.0 - profile: 1.0.0 - provisioning_api: 1.21.0 - recommendations: 4.0.0 - related_resources: 2.0.0 - richdocuments: 8.7.4 - richdocumentscode: 25.4.403 - serverinfo: 3.0.0 - settings: 1.14.0 - sharebymail: 1.21.0 - spreed: 21.1.4 - support: 3.0.0 - survey_client: 3.0.0 - systemtags: 1.21.1 - text: 5.0.0 - theming: 2.6.1 - twofactor_backupcodes: 1.20.0 - updatenotification: 1.21.0 - user_saml: 7.0.0 - user_status: 1.11.0 - viewer: 4.0.0 - weather_status: 1.11.0 - webhook_listeners: 1.2.0 - workflowengine: 2.13.0 Disabled: - admin_audit: 1.21.0 - encryption: 2.19.0 - files_external: 1.23.0 - suspicious_login: 9.0.1 - twofactor_nextcloud_notification: 5.0.0 - twofactor_totp: 13.0.0-dev.0 - user_ldap: 1.22.0

Nextcloud configuration

{
"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
}
],
"upgrade.disable-web": true,
"instanceid": "REMOVED SENSITIVE VALUE",
"passwordsalt": "REMOVED SENSITIVE VALUE",
"secret": "REMOVED SENSITIVE VALUE",
"trusted_domains": [
"nextcloud-test.wrobix.de"
],
"datadirectory": "REMOVED SENSITIVE VALUE",
"dbtype": "sqlite3",
"version": "31.0.7.1",
"overwrite.cli.url": "REMOVED SENSITIVE VALUE",
"overwriteprotocol": "https",
"installed": true
}
}