It's possible for a server to have multiple associated public keys. This can happen when a Matrix server is set up on a particular domain, its key is lost, and the server continues running on the domain. Now there will be two keys associated to the domain. The old logic wouldn't fetch the new key if we already had the old key cached. The new logic will fetch any keys we don't have that we need, rather than just fetching one key per server.
Previous behavior was causing us to error out of the entire
state_cache::update_membership function when it saw an invalid m.direct,
making it impossible for affected users to join upgraded rooms. This bug
is especially bad if an affected user attempts to upgrade a room,
because we will fail to create their join event in the new room, leaving
both rooms permanently bricked.
The new behavior should never prevent users from joining a room based on
the contents of their account data, and should migrate the `m.direct`
event in a reasonable way even if it is partially corrupted by the
element bug.
This also fixes a bug where the previous implementation will
unintentionally remove any keys that aren't part of the expected
m.direct schema. I don't know of any cases where this came up in
practice.
Fixes: #46
The implementation inside each function is unchanged from the original.
I intend to clean up and fix bugs in later commits, so the diff will be
more clear.
The spec defines that the media endpoints should return 504 when a file
is not-yet-uploaded, which has been interpreted to include when a file
was deleted. Modifies the /media/v3/download/ and /media/r0/thumbnail
endpoints.
Some duplicated-ish code from src/database/key_value/rooms/timeline.rs
about handling errors from `pdus_since`/`pdus_until`, it seems like the
error message was actually directly copy-pasted from there because it
referred to the wrong function lol
ReloadHandle is taken from conduwuit commit
8a5599adf9eafe9111f3d1597f8fb333b8b76849, authored by Benjamin.
Co-authored-by: Benjamin Lee <benjamin@computer.surgery>
