NickServ GETEMAIL + ChanServ SET RESTRICTED

GETEMAIL (auspex) lists accounts whose email matches a glob. SET
RESTRICTED makes a channel kick anyone without access (or oper) as they
join, mirroring the SECUREOPS on-join enforcement.

modules/nickserv/src/getemail.rs

@@ -0,0 +1,19 @@
+use echo_api::{Priv, Sender, ServiceCtx, Store};
+
+// GETEMAIL <email>: list accounts registered with a matching email. Oper-only.
+pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db: &dyn Store) {
+    if !from.privs.has(Priv::Auspex) {
+        ctx.notice(me, from.uid, "Access denied — GETEMAIL needs the \x02auspex\x02 privilege.");
+        return;
+    }
+    let Some(&pattern) = args.get(1) else {
+        ctx.notice(me, from.uid, "Syntax: GETEMAIL <email>");
+        return;
+    };
+    let accounts = db.accounts_by_email(pattern);
+    if accounts.is_empty() {
+        ctx.notice(me, from.uid, format!("No accounts use an email matching \x02{pattern}\x02."));
+        return;
+    }
+    ctx.notice(me, from.uid, format!("Accounts with email matching \x02{pattern}\x02: {}", accounts.join(", ")));
+}

modules/nickserv/src/lib.rs

@@ -36,6 +36,8 @@ mod ajoin;
 mod update;
 #[path = "list.rs"]
 mod list;
+#[path = "getemail.rs"]
+mod getemail;
 #[path = "suspend.rs"]
 mod suspend;
 mod noexpire;
@@ -62,6 +64,7 @@ const TOPICS: &[HelpEntry] = &[
     HelpEntry { cmd: "AJOIN", summary: "auto-join channels on login", detail: "Syntax: \x02AJOIN ADD <#channel>\x02, \x02AJOIN DEL <#channel>\x02, \x02AJOIN LIST\x02\nChannels you are auto-joined to when you identify." },
     HelpEntry { cmd: "UPDATE", summary: "refresh your session", detail: "Syntax: \x02UPDATE\x02\nRe-applies your auto-joins and vhost and re-checks for new memos." },
     HelpEntry { cmd: "LIST", summary: "list accounts (oper)", detail: "Syntax: \x02LIST <pattern>\x02\nLists registered accounts matching a glob. Requires the auspex privilege." },
+    HelpEntry { cmd: "GETEMAIL", summary: "find accounts by email (oper)", detail: "Syntax: \x02GETEMAIL <email>\x02\nLists accounts registered with a matching email. Requires the auspex privilege." },
     HelpEntry { cmd: "SUSPEND", summary: "block an account (operator)", detail: "Syntax: \x02SUSPEND <account> [reason]\x02\nBlocks an account from logging in. Operators only." },
     HelpEntry { cmd: "UNSUSPEND", summary: "lift a suspension (operator)", detail: "Syntax: \x02UNSUSPEND <account>\x02\nLifts a suspension. Operators only." },
     HelpEntry { cmd: "NOEXPIRE", summary: "pin against expiry (operator)", detail: "Syntax: \x02NOEXPIRE <account> {ON|OFF}\x02\nPins an account so inactivity expiry never drops it. Operators only." },
@@ -123,6 +126,7 @@ impl Service for NickServ {
             Some("NOEXPIRE") => noexpire::handle(me, from, args, ctx, db),
             Some("UPDATE") => update::handle(me, from, ctx, db),
             Some("LIST") => list::handle(me, from, args, ctx, db),
+            Some("GETEMAIL") => getemail::handle(me, from, args, ctx, db),
             Some("HELP") => echo_api::help(me, from, ctx, BLURB, TOPICS, args.get(1).copied()),
             Some(other) => ctx.notice(me, from.uid, format!("I don't know the command \x02{other}\x02. Try \x02HELP\x02.")),
             None => {}