Ensures access tokens are unique across both user and appservice tables to
prevent authentication ambiguity and potential security issues.
Changes:
- On startup, automatically logout any user devices using tokens that
conflict with appservice tokens (resolves in favour of appservices)
and log a warning with affected user/device details
- When creating new user tokens, check for conflicts with appservice tokens
and generate a new token if a collision would occur
- When registering new appservices, reject registration if the token is
already in use by a user device
- Use futures::select_ok to race token lookups concurrently for better
performance (adapted from tuwunel commit 066097a8)
This fix-forward approach resolves existing token collisions on startup
whilst preventing new ones from being created, without breaking existing
valid authentications.
The find_token optimisation is adapted from tuwunel (matrix-construct/tuwunel)
commit 066097a8: "Optimize user and appservice token queries" by Jason Volk.
Fixes#813: Application services were unable to work because their sender_localpart
user was never created in the database, preventing authentication.
This fix ensures the appservice user account is created when:
- The server starts up and loads existing appservices from the database
- A new appservice is registered via the admin command
Additionally, if an appservice user has been accidentally deactivated, it will be
automatically reactivated when the appservice starts.
The solution centralises all appservice startup logic into a single `start_appservice`
helper method, eliminating code duplication between the registration and startup paths.
All images should be generating correctly with parallelism and Docker manifests, and should output the end of the CI testing errors in a job summary box when the test fails.
When the test succeeds you get a big ✅ then at the end of the Docker publish it should include the `docker pull` commands for both Docker Hub and GHCR registries to make those pesky Docker users lives easier!
Tom Foster