feat: restricted_writes

Signed-off-by: Greg Heartsfield <scsibug@imap.cc>

config.toml

@@ -75,6 +75,11 @@ description = "A newly created nostr-rs-relay.\n\nCustomize this with your own i
 # `proto/nauthz.proto`.
 # event_admission_server = "http://[::1]:50051"
 
+# If the event admission server denies writes
+# in any case (excluding spam filtering).
+# This is reflected in the relay information document.
+# restricts_write = true
+
 [network]
 # Bind to this network address
 address = "0.0.0.0"

src/config.rs

@@ -32,6 +32,7 @@ pub struct Database {
 #[allow(unused)]
 pub struct Grpc {
     pub event_admission_server: Option<String>,
+    pub restricts_write: bool,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -287,6 +288,7 @@ impl Default for Settings {
             },
             grpc: Grpc {
                 event_admission_server: None,
+                restricts_write: false,
             },
             network: Network {
                 port: 8080,

src/info.rs

@@ -13,6 +13,9 @@ pub const UNIT: &str = "msats";
 pub struct Limitation {
     #[serde(skip_serializing_if = "Option::is_none")]
     payment_required: Option<bool>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    restricted_writes: Option<bool>,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -75,6 +78,12 @@ impl From<Settings> for RelayInfo {
 
         let limitations = Limitation {
             payment_required: Some(p.enabled),
+            restricted_writes: Some(
+                p.enabled
+                    || c.verified_users.is_enabled()
+                    || c.authorization.pubkey_whitelist.is_some()
+                    || c.grpc.restricts_write,
+            ),
         };
 
         let (payment_url, fees) = if p.enabled {