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.
This moves all checks related to `forbidden_remote_server_names`,
`forbidden_remote_room_directory_server_names` and
`prevent_media_downloads_from` to a new `moderation` module.
This is useful for implementing more complicated logic globally.
Mostly the changes from #673, but is also relevant for #750
combine service/users data w/ mod unit
split sliding sync related out of service/users
instrument database entry points
remove increment crap from database interface
de-wrap all database get() calls
de-wrap all database insert() calls
de-wrap all database remove() calls
refactor database interface for async streaming
add query key serializer for database
implement Debug for result handle
add query deserializer for database
add deserialization trait for option handle
start a stream utils suite
de-wrap/asyncify/type-query count_one_time_keys()
de-wrap/asyncify users count
add admin query users command suite
de-wrap/asyncify users exists
de-wrap/partially asyncify user filter related
asyncify/de-wrap users device/keys related
asyncify/de-wrap user auth/misc related
asyncify/de-wrap users blurhash
asyncify/de-wrap account_data get; merge Data into Service
partial asyncify/de-wrap uiaa; merge Data into Service
partially asyncify/de-wrap transaction_ids get; merge Data into Service
partially asyncify/de-wrap key_backups; merge Data into Service
asyncify/de-wrap pusher service getters; merge Data into Service
asyncify/de-wrap rooms alias getters/some iterators
asyncify/de-wrap rooms directory getters/iterator
partially asyncify/de-wrap rooms lazy-loading
partially asyncify/de-wrap rooms metadata
asyncify/dewrap rooms outlier
asyncify/dewrap rooms pdu_metadata
dewrap/partially asyncify rooms read receipt
de-wrap rooms search service
de-wrap/partially asyncify rooms user service
partial de-wrap rooms state_compressor
de-wrap rooms state_cache
de-wrap room state et al
de-wrap rooms timeline service
additional users device/keys related
de-wrap/asyncify sender
asyncify services
refactor database to TryFuture/TryStream
refactor services for TryFuture/TryStream
asyncify api handlers
additional asyncification for admin module
abstract stream related; support reverse streams
additional stream conversions
asyncify state-res related
Signed-off-by: Jason Volk <jason@zemos.net>
Ginger
Jade Ellis
Niklas Wojtkowiak
timedout
Tom Foster
June Clementine Strawberry
Jason Volk
June Clementine Strawberry