[OCM] Users can invite themselves to their own federated connection

[PrajwolAmatya]

Describe the bug

When a user generates a token for federated connection and pastes it to their own accept invitation field, then a federated connection is created with the user itself.

Video Demonstration

Screencast.from.02-13-2025.02.05.15.PM.webm

Here we can see that a federated connection is created with the user himself and while sharing a resource, an external user is also available and resources can also be shared. The shared resource is available on your own shares drive.

Also, an error does show up, but nothing is restricted for federation connections.

The behavior is same when creating connection using API

curl -kv -uadmin:admin "https://localhost:9200/sciencemesh/accept-invite" -XPOST \
--data '{
    "providerDomain": "localhost:9200",
    "token": "<token>"
}'

This returns the following response and 409 status code:

{
    "code": "ALREADY_EXIST",
    "message": "user already known"
}

Eventhough it throws error, the connection is created.

Setup

Infinite Scale 7.1.0-rc.4+ac1689b64d Community
ownCloud Web UI 11.1.3

[saw-jan]

CC @kobergj @2403905