[Story] EX: Disable E2EE with a server config

[manuroe]

Description

• As a homeserver admin
• I want to disable e2ee usage of my users

There is an existing mechanism used by EW with the io.element.e2ee config in /.well-known/matrix/client. It controls e2ee when creating a room: https://github.com/element-hq/element-web/blob/develop/docs/e2ee.md.

We need to consider another place to store it. See #3046.

It offers 2 parameters: default and force_disable. default has no meaning on EX because mobile users has no e2ee choice when creating a room in EX. DM and private rooms are e2ee. Public are non e2ee (but the user can change it later in the room settings).

This work is only about "force_disable": true.

Acceptance criteria

When "force_disable": true:

• DMs are created in clear
• Private rooms are created in clear
• Public rooms settings have no more the option to enable E2EE

Leads

• Tech:
• Design:

Time sheeting

?

Documentation

Dependencies

• None

Out of scope

• Nothing

Open questions

• Do we still want to use /.well-known/matrix/client?

Subtasks

Android

iOS

Rust

Other

Sign-offs

• Android
• iOS

[manuroe]

I updated the issue to consider #3046.