* crypto: implement more primitives for the MemoryStore to work in tests
* crypto: change the shape of the `CryptoStoreLock` API
In particular:
- make the lock work across multiple threads of the same process trying to acquire it,
using `num_holders`.
- add a mechanism to get the lock only once (for the NSE process, in case the main app
had acquired the lock before).
* client: add a cross-process crypto store lock, enable it with `Encryption::enable_cross_process_store_lock`
* client: make `preshare_room_key` a critical section of the cross-process lock
* sliding sync: make it possible to define different timeouts for a `SlidingSyncInstance`
This will be handy for the NSE process on iOS, which has very little time to wait for the proxy's responses.
* feat: implement the `EncryptionSync` API (renamed from `Notification` API)
* fixup! client: add a cross-process crypto store lock, enable it with `Encryption::enable_cross_process_store_lock`
* feat: allow disabling e2ee / to-device in the RoomList API
* feat: use same SS id for main/NSE process, reload to-device token from disk before each encryption sync
* fix: better error handling if restoring the to-device token failed
* feat: add logs for the locking functions
* test: add a few tests for encryption sync
* feat: add `reload_caches` method in the `EncryptionSync` + FFI bindings
* chore: clean up FFI loop
* encryption sync: Remove unused errors, specialize some errors
* feat: include termination reason in the encryption sync loop
* feat: add more logs
* chore: fmt + clippy + doc
* comment: precise only in the presence of another process
* Tweak `room_list` APIs to include `_with_encryption` variants
* chore: rustfmt
This patch implements `RoomList::stop_sync` on the FFI bindings.
Technically, it's no more useful to store the `TaskHandle` of the
`sync`, but it's still here, in case of.
It has an account field besides the issuer field.
Also store it as immutable, the data used for authentication will be
stored in another variable.
Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>
This is the first PR for splitting the sync loop into two. This offers a new high-level API, `NotificationApi`, that makes use of a separate `SlidingSync` instance which sole role is to listen to to-device events and e2ee; it's pre-configured to do so. That means we're not force-enabling e2ee and to-device by default for every sliding sync instance, and as such we won't either generate Olm requests to the home server in general.
In the future, this new high-level API will hide some low-level dirty details so that its can be instantiated in multiple processes at the same time (lock across process, invalidate and refill crypto caches, etc.).
An embedder who would want to make use of this would need the following:
- a main sliding sync instance, without e2ee and to-device. Using the `matrix_sdk_ui::RoomList` would be the best bet, at this time.
- an instance of this `matrix_sdk_ui::NotificationApi`, with a different identifier.
Note that this is not ready to be used in an external process; or it will cause the same kind of issues that we're seeing as of today: invalid crypto caches resulting in UTD, etc.
Fixes https://github.com/matrix-org/matrix-rust-sdk/issues/1961.
This patch renames `SlidingSyncState` to `SlidingSyncListLoadingState`
because:
1. It's about a list information,
2. It's about the loading state, not a generic state.
This patch updates `Room::add_timeline_listener` to return a `RoomTimelineListenerResult`, a new type defined as:
```rust
pub RoomTimelineListenerResult {
items: Vec<Arc<TimelineItem>>,
items_stream: TaskHandle,
}
```
It is not possible to cancel the `items_stream` by cancelling the
`TaskHandle`. Without this, dropping `Room` won't drop the `Timeline`,
as a clone is moved inside the spawned task. As a consequence, it will
endlessly call the listener.
What the FFI user wants is to subscribe a listener to the
timeline updates. This feature is already supported by
`room_item.full_room().add_timeline_listener()`. So we can safely
remove `RoomListItem::timeline` as we are sure it's never going to be
used for now.
It's possible to do `room.inner_room().room_id()` but it's just simpler
to call `room.id()`. This patch adds this shortcut.
It's especially useful for FFI users, where creating a “full
room” (`room_item.full_room().room_id()`) may be expensive.
