State-reset and security mitigations.

Upgrade Ruma to present.

The following are intentionally benign for activation in a later commit:

- Hydra backports not default.
- Room version 12 not default.
- Room version 12 not listed as stable.

Do not enable them manually or you can brick your database.

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/error/mod.rs

@@ -118,6 +118,8 @@ pub enum Error {
 	Mxc(#[from] ruma::MxcUriError),
 	#[error(transparent)]
 	Mxid(#[from] ruma::IdParseError),
+	#[error(transparent)]
+	PowerLevels(#[from] ruma::events::room::power_levels::PowerLevelsError),
 	#[error("from {0}: {1}")]
 	Redaction(ruma::OwnedServerName, ruma::canonical_json::RedactionError),
 	#[error("{0}: {1}")]
@@ -126,8 +128,6 @@ pub enum Error {
 	Ruma(#[from] ruma::api::client::error::Error),
 	#[error(transparent)]
 	Signatures(#[from] ruma::signatures::Error),
-	#[error(transparent)]
-	StateRes(#[from] crate::state_res::Error),
 	#[error("uiaa")]
 	Uiaa(ruma::api::client::uiaa::UiaaInfo),
 

src/core/error/response.rs

@@ -41,10 +41,7 @@ impl From<Error> for UiaaResponse {
 			message: error.message(),
 		};
 
-		Self::MatrixError(ruma::api::client::error::Error {
-			status_code: error.status_code(),
-			body,
-		})
+		Self::MatrixError(ruma::api::client::error::Error::new(error.status_code(), body))
 	}
 }