1 files changed, 34 insertions, 0 deletions

diff --git a/server/helpers/custom-validators/servers.ts b/server/helpers/custom-validators/servers.ts
new file mode 100644
index 000000000..d5021bf38
--- /dev/null
+++ b/server/helpers/custom-validators/servers.ts
@@ -0,0 +1,34 @@
+import * as validator from 'validator'
+import 'express-validator'
+
+import { isArray, exists } from './misc'
+import { isTestInstance } from '../core-utils'
+
+function isHostValid (host: string) {
+  const isURLOptions = {
+    require_host: true,
+    require_tld: true
+  }
+
+  // We validate 'localhost', so we don't have the top level domain
+  if (isTestInstance()) {
+    isURLOptions.require_tld = false
+  }
+
+  return exists(host) && validator.isURL(host, isURLOptions) && host.split('://').length === 1
+}
+
+function isEachUniqueHostValid (hosts: string[]) {
+  return isArray(hosts) &&
+    hosts.length !== 0 &&
+    hosts.every(host => {
+      return isHostValid(host) && hosts.indexOf(host) === hosts.lastIndexOf(host)
+    })
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  isEachUniqueHostValid,
+  isHostValid
+}