This patch renames `LocalIsWedged` to `LocalCannotBeSent` to avoid
confusion with the wedged/unwedged state of the `send_queue`. The
semantics is different in `latest_events`.
This patch handles the case where a local event is replaced by another
local event which isn't suitable for being a latest event value. In this
case, the previous existing latest event value should be removed from
the buffer.
This patch reduces the level of logs when channels have been closed in
`LatestEvents`' tasks from `error` to `warn`. Indeed, when the `Client`
shutdowns, the channels will be closed, but it's not an error at all.
This patch implements `LatestEvent::update_with_send_queue`.
It introduces an intermediate type, for the sake of clarity,
`LatestEventValuesForLocalEvents`.
The difficulty here is to keep a buffer of `LatestEventValue`s requested
by the `SendQueue`. Why? Because we want the latest event value, but we
only receive `RoomSendQueueUpdate`s, we can't iterate over local events
in the `SendQueue` like we do for the `EventCache` to re-compute the
latest event if a local event has been cancelled or updated.
A particular care must also be applied when a local event is wedged:
this local event and all its followings must be marked as wedged too,
so that the `LatestEventValue` is `LocalIsWedged`. Same when the local
event is unwedged.
This patch splits the `LatestEventValue` type into `LatestEventValue`
+ `LatestEventKind`. Basically, all variants in `LatestEventValue` are
moved inside the new `LatestEventKind` enum. `LatestEventValue` keeps
`None`, and see the new `Remote`, `LocalIsSending` and `LocalIsWedged`
variants.
This patch also extracts the message-like handling of `find_and_map`
(now renamed `find_and_map_timeline_event`) into its own function:
`find_and_map_any_message_like_event_content`. This is going to be
handful for the send queue part.
This patch updates `compute_latest_events` to broadcast a
`RoomSendQueueUpdate` onto `LatestEvent`. It introduces the new
`update_with_send_queue` method.
This patch renames the `update` methods to `update_with_event_cache`
in the `latest_events` module. It frees the road to introduce
`update_with_send_queue`.
This patch updates `LatestEvents` to listen to the updates from the
`SendQueue`. The `listen_to_event_cache_and_send_queue_updates` function
contains the important change. A new `LatestEventQueueUpdate` enum is
added to represent either an update from the event cache, or from the
send queue.
So far, `compute_latest_events` does nothing in particular, apart from
panicking with a `todo!()` when a send queue update is met.
Modifies `OlmMachine::decrypt_room_event_inner` to call a new method
`OlmMachine::verify_packed_state_key` which, if the event is a state
event, verifies that the original event's state key, when unpacked,
matches the state key and event type in the decrypted event content.
Introduces MegolmError::StateKeyVerificationFailed and
UnableToDecryptReason::StateKeyVerificationFailed which are thrown when
the verification fails.
Signed-off-by: Skye Elliot <actuallyori@gmail.com>
This commit also refactors out what would be common code between
::encrypt and ::encrypt_state to a helper ::encrypt_inner.
Signed-off-by: Skye Elliot <actuallyori@gmail.com>
Ivan Enderlin