add legacy element hack for UIAA using invalid user field

see:
- e9302a9556
- https://github.com/element-hq/element-android/issues/8043
- https://github.com/element-hq/element-ios/issues/7405

Signed-off-by: strawberry <strawberry@puppygock.gay>

Cargo.lock

@@ -2721,7 +2721,7 @@ dependencies = [
 [[package]]
 name = "ruma"
 version = "0.10.1"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "assign",
  "js_int",
@@ -2741,7 +2741,7 @@ dependencies = [
 [[package]]
 name = "ruma-appservice-api"
 version = "0.10.0"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "js_int",
  "ruma-common",
@@ -2753,7 +2753,7 @@ dependencies = [
 [[package]]
 name = "ruma-client-api"
 version = "0.18.0"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "as_variant",
  "assign",
@@ -2776,7 +2776,7 @@ dependencies = [
 [[package]]
 name = "ruma-common"
 version = "0.13.0"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "as_variant",
  "base64 0.22.1",
@@ -2806,7 +2806,7 @@ dependencies = [
 [[package]]
 name = "ruma-events"
 version = "0.28.1"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "as_variant",
  "indexmap 2.2.6",
@@ -2828,7 +2828,7 @@ dependencies = [
 [[package]]
 name = "ruma-federation-api"
 version = "0.9.0"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "js_int",
  "ruma-common",
@@ -2840,7 +2840,7 @@ dependencies = [
 [[package]]
 name = "ruma-identifiers-validation"
 version = "0.9.5"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "js_int",
  "thiserror",
@@ -2849,7 +2849,7 @@ dependencies = [
 [[package]]
 name = "ruma-identity-service-api"
 version = "0.9.0"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "js_int",
  "ruma-common",
@@ -2859,7 +2859,7 @@ dependencies = [
 [[package]]
 name = "ruma-macros"
 version = "0.13.0"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "once_cell",
  "proc-macro-crate",
@@ -2874,7 +2874,7 @@ dependencies = [
 [[package]]
 name = "ruma-push-gateway-api"
 version = "0.9.0"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "js_int",
  "ruma-common",
@@ -2886,7 +2886,7 @@ dependencies = [
 [[package]]
 name = "ruma-signatures"
 version = "0.15.0"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "base64 0.22.1",
  "ed25519-dalek",
@@ -2902,7 +2902,7 @@ dependencies = [
 [[package]]
 name = "ruma-state-res"
 version = "0.11.0"
-source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#042444dc1d30c40a97e5acd7cebcda4ed1f76ed6"
+source = "git+https://github.com/girlbossceo/ruwuma?branch=conduwuit-changes#e9302a955614429ca969eb4c7f561fc87a4f6f15"
 dependencies = [
  "itertools 0.12.1",
  "js_int",

src/main/Cargo.toml

@@ -67,6 +67,7 @@ dev_release_log_level = [
 ]
 element_hacks = [
 	"conduit-api/element_hacks",
+	"conduit-service/element_hacks",
 ]
 gzip_compression = [
 	"conduit-api/gzip_compression",

src/service/Cargo.toml

@@ -17,6 +17,7 @@ crate-type = [
 ]
 
 [features]
+element_hacks = []
 dev_release_log_level = []
 release_max_log_level = [
 	"tracing/max_level_trace",

src/service/uiaa/mod.rs

@@ -58,9 +58,22 @@ impl Service {
 			AuthData::Password(Password {
 				identifier,
 				password,
+				#[cfg(feature = "element_hacks")]
+				user,
 				..
 			}) => {
-				let UserIdentifier::UserIdOrLocalpart(username) = identifier else {
+				#[cfg(feature = "element_hacks")]
+				let username = if let Some(UserIdentifier::UserIdOrLocalpart(username)) = identifier {
+					username
+				} else if let Some(username) = user {
+					username
+				} else {
+					return Err(Error::BadRequest(ErrorKind::Unrecognized, "Identifier type not recognized."));
+				};
+
+				#[cfg(not(feature = "element_hacks"))]
+				let Some(UserIdentifier::UserIdOrLocalpart(username)) = identifier
+				else {
 					return Err(Error::BadRequest(ErrorKind::Unrecognized, "Identifier type not recognized."));
 				};