preliminary ssh host structs, api, ui

backend/src/ee/services/ssh-host/ssh-host-validators.ts

@@ -0,0 +1,15 @@
+import { isFQDN } from "@app/lib/validator/validate-url";
+
+export const isValidHostname = (value: string): boolean => {
+  if (typeof value !== "string") return false;
+  if (value.length > 255) return false;
+
+  // Only allow strict FQDNs, no wildcards or IPs
+  return isFQDN(value, {
+    require_tld: true,
+    allow_underscores: false,
+    allow_trailing_dot: false,
+    allow_numeric_tld: true,
+    allow_wildcard: false
+  });
+};