Fallback keys can be provided by client devices to be used in case the
supply of one-time keys run out. The server will store one fallback key
per user, per device, per algorithm. The server will keep track of
whether this fallback key has been used or not.
The /keys/claim endpoint now provides a fallback key
if no one-time key is found
The /keys/upload endpoint now accepts fallback keys
The /sync endpoint now informs the client of the algorithms for which it
has an unused fallback key in stock.
**Does not yet work!** Currently, state resolution does not correctly resolve conflicting states. Everything else appears to work as expected, so stateres will be fixed soon, then we should be clear for takeoff.
Also: a lot of things currently accept a nullable room ID that really just don't need to. This will need tidying up before merge. Some authentication checks have also been disabled temporarily but nothing important.
A lot of things are tagged with `TODO(hydra)`, those need resolving before merge. External contributors should PR to the `hydra/public` branch, *not* ` main`.
---
This PR should be squash merged.
Reviewed-on: https://forgejo.ellis.link/continuwuation/continuwuity/pulls/943
Co-authored-by: nexy7574 <git@nexy7574.co.uk>
Co-committed-by: nexy7574 <git@nexy7574.co.uk>
The latest Rust nightly compiler (2025-08-27) introduced the
elided-named-lifetimes lint which causes Clippy CI checks to fail
when an elided lifetime ('_) resolves to a named lifetime that's
already in scope.
This commit fixes the Clippy warnings by:
- Making lifetime relationships explicit where 'a is already in scope
- Keeping elided lifetimes ('_) in functions without explicit
lifetime parameters
- Ensuring proper lifetime handling in the database pool module
Affected files (17 total):
- Database map modules: Handle, Key, and KeyVal references in get,
qry, keys, and stream operations
- Database pool module: into_recv_seek function
This change resolves the CI build failures without changing any
functionality, ensuring the codebase remains compatible with the
latest nightly Clippy checks.
Ginger