OperServ: STATS enforcement overview

STATS reports the live counts OperServ holds — AKILL and SQLINE bans by
kind, and services ignores — as a quick at-a-glance check. Read-only, so
any operator can run it.

operserv/src/stats.rs

@@ -0,0 +1,12 @@
+use fedserv_api::{Sender, ServiceCtx, Store};
+
+// STATS: an at-a-glance summary of the enforcement state OperServ holds — how
+// many network bans of each kind and how many services ignores are live.
+// Read-only, so any operator may run it (the module is already oper-gated).
+pub fn handle(me: &str, from: &Sender, db: &mut dyn Store, ctx: &mut ServiceCtx) {
+    let akills = db.akills();
+    let glines = akills.iter().filter(|a| a.kind == "G").count();
+    let qlines = akills.iter().filter(|a| a.kind == "Q").count();
+    let ignores = db.ignores().len();
+    ctx.notice(me, from.uid, format!("Live network bans: \x02{glines}\x02 AKILL, \x02{qlines}\x02 SQLINE. Services ignores: \x02{ignores}\x02."));
+}