NickServ: add SASET for operator account edits

modules/nickserv/src/saset.rs

@@ -0,0 +1,57 @@
+use echo_api::{Priv, Sender, ServiceCtx, Store};
+
+// SASET <account> <option> [value]: the operator counterpart of SET, editing
+// another account's settings. Oper-only (Priv::Admin). Mirrors the self-service
+// SET options that make sense to change on someone else's behalf.
+pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db: &mut dyn Store) {
+    if !from.privs.has(Priv::Admin) {
+        ctx.notice(me, from.uid, "Access denied — that command is for services operators.");
+        return;
+    }
+    let (Some(&target), sub) = (args.get(1), args.get(2).map(|s| s.to_ascii_uppercase())) else {
+        ctx.notice(me, from.uid, "Syntax: SASET <account> PASSWORD <newpassword> | EMAIL [address] | GREET [message]");
+        return;
+    };
+    let Some(account) = db.resolve_account(target).map(str::to_string) else {
+        ctx.notice(me, from.uid, format!("\x02{target}\x02 isn't registered."));
+        return;
+    };
+    // Credential/identity fields are owned by the website in external mode.
+    if db.external_accounts() && matches!(sub.as_deref(), Some("PASSWORD" | "PASS" | "EMAIL")) {
+        ctx.notice(me, from.uid, "That's managed on the website — change it there.");
+        return;
+    }
+    match sub.as_deref() {
+        Some("PASSWORD") | Some("PASS") => {
+            let Some(&password) = args.get(3) else {
+                ctx.notice(me, from.uid, "Syntax: SASET <account> PASSWORD <newpassword>");
+                return;
+            };
+            if let Err(reason) = crate::password::validate_password(password, &account) {
+                ctx.notice(me, from.uid, reason);
+                return;
+            }
+            // The link layer derives the new password off-thread, then commits it.
+            ctx.defer_password(account, password, me, from.uid);
+        }
+        Some("EMAIL") => {
+            let email = args.get(3).map(|s| s.to_string());
+            let cleared = email.is_none();
+            match db.set_email(&account, email) {
+                Ok(()) if cleared => ctx.notice(me, from.uid, format!("Email for \x02{account}\x02 cleared.")),
+                Ok(()) => ctx.notice(me, from.uid, format!("Email for \x02{account}\x02 updated.")),
+                Err(_) => ctx.notice(me, from.uid, "Sorry, that didn't work. Please try again in a moment."),
+            }
+        }
+        Some("GREET") => {
+            let greet = if args.len() > 3 { args[3..].join(" ") } else { String::new() };
+            let cleared = greet.is_empty();
+            match db.set_greet(&account, &greet) {
+                Ok(()) if cleared => ctx.notice(me, from.uid, format!("Greet for \x02{account}\x02 cleared.")),
+                Ok(()) => ctx.notice(me, from.uid, format!("Greet for \x02{account}\x02 is now: {greet}")),
+                Err(_) => ctx.notice(me, from.uid, "Sorry, that didn't work. Please try again in a moment."),
+            }
+        }
+        _ => ctx.notice(me, from.uid, "Syntax: SASET <account> PASSWORD <newpassword> | EMAIL [address] | GREET [message]"),
+    }
+}