Add config flag to disable registration

rc_core/src/persist/config/cubes_json.rs

@@ -293,6 +293,7 @@ impl <C: Clone + Send> super::ConfigProvider<C> for CubeConfig {
         super::ServerConfig {
             database: self.settings.server.database.clone(),
             auto_signup: self.settings.server.auto_signup,
+            allow_signup: self.settings.server.allow_signup,
             queue_mode: super::QueueChangeMode::from_persist(self.settings.server.queue_mode.clone()),
             domain: self.settings.server.domain.to_owned(),
             cdn_url: self.settings.server.cdn_url.trim_end_matches('/').to_owned(),

rc_core/src/persist/config/traits.rs

@@ -92,6 +92,7 @@ pub struct TypedDevMessage<C> {
 pub struct ServerConfig {
     pub database: String,
     pub auto_signup: bool,
+    pub allow_signup: bool,
     pub queue_mode: QueueChangeMode,
     pub domain: String,
     pub cdn_url: String,

rc_core/src/persist/settings.rs

@@ -83,6 +83,8 @@ pub struct ServerSettings {
     pub database: String,
     #[serde(default)]
     pub auto_signup: bool,
+    #[serde(default = "default_true")]
+    pub allow_signup: bool,
     #[serde(default)]
     pub queue_mode: QueueMode,
     #[serde(default = "default_domain_root")]
@@ -123,6 +125,7 @@ fn default_server_conf() -> ServerSettings {
     ServerSettings {
         database: default_db_conn(),
         auto_signup: false,
+        allow_signup: true,
         queue_mode: QueueMode::Notify,
         domain: default_domain_root(),
         cdn_url: default_cdn_root_url(),