add command to set the allow registration status

Co-Authored-By: Matthias Ahouansou <matthias@ahouansou.cz>

src/api/client_server/account.rs

@@ -75,7 +75,7 @@ pub async fn get_register_available_route(
 /// - Creates a new account and populates it with default account data
 /// - If `inhibit_login` is false: Creates a device and returns device id and access_token
 pub async fn register_route(body: Ruma<register::v3::Request>) -> Result<register::v3::Response> {
-    if !services().globals.allow_registration() && body.appservice_info.is_none() {
+    if !services().globals.allow_registration().await && body.appservice_info.is_none() {
         return Err(Error::BadRequest(
             ErrorKind::Forbidden,
             "Registration has been disabled.",

src/service/admin/mod.rs

@@ -160,6 +160,9 @@ enum AdminCommand {
         password: Option<String>,
     },
 
+    /// Temporarily toggle user registration by passing either true or false as an argument, does not persist between restarts
+    AllowRegistration { status: Option<bool> },
+
     /// Disables incoming federation handling for a room.
     DisableRoom { room_id: Box<RoomId> },
     /// Enables incoming federation handling for a room again.
@@ -656,6 +659,24 @@ impl Service {
                     "Created user with user_id: {user_id} and password: {password}"
                 ))
             }
+            AdminCommand::AllowRegistration { status } => {
+                if let Some(status) = status {
+                    services().globals.set_registration(status).await;
+                    RoomMessageEventContent::text_plain(if status {
+                        "Registration is now enabled"
+                    } else {
+                        "Registration is now disabled"
+                    })
+                } else {
+                    RoomMessageEventContent::text_plain(
+                        if services().globals.allow_registration().await {
+                            "Registration is currently enabled"
+                        } else {
+                            "Registration is currently disabled"
+                        },
+                    )
+                }
+            }
             AdminCommand::DisableRoom { room_id } => {
                 services().rooms.metadata.disable_room(&room_id, true)?;
                 RoomMessageEventContent::text_plain("Room disabled.")

src/service/globals/mod.rs

@@ -55,6 +55,7 @@ pub struct Service {
     pub actual_destination_cache: Arc<RwLock<WellKnownMap>>, // actual_destination, host
     pub tls_name_override: Arc<StdRwLock<TlsNameMap>>,
     pub config: Config,
+    allow_registration: RwLock<bool>,
     keypair: Arc<ruma::signatures::Ed25519KeyPair>,
     dns_resolver: TokioAsyncResolver,
     jwt_decoding_key: Option<jsonwebtoken::DecodingKey>,
@@ -184,6 +185,7 @@ impl Service {
         let unstable_room_versions = vec![RoomVersionId::V3, RoomVersionId::V4, RoomVersionId::V5];
 
         let mut s = Self {
+            allow_registration: RwLock::new(config.allow_registration),
             db,
             config,
             keypair: Arc::new(keypair),
@@ -285,8 +287,15 @@ impl Service {
         self.config.max_fetch_prev_events
     }
 
-    pub fn allow_registration(&self) -> bool {
-        self.config.allow_registration
+    /// Allows for the temporary (non-persistant) toggling of registration
+    pub async fn set_registration(&self, status: bool) {
+        let mut lock = self.allow_registration.write().await;
+        *lock = status;
+    }
+
+    /// Checks whether user registration is allowed
+    pub async fn allow_registration(&self) -> bool {
+        *self.allow_registration.read().await
     }
 
     pub fn allow_encryption(&self) -> bool {