Implement a better management interface for Settings (#809)

app/Http/Requests/Admin/Settings/MailSettingsFormRequest.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Pterodactyl\Http\Requests\Admin\Settings;
+
+use Pterodactyl\Http\Requests\Admin\AdminFormRequest;
+
+class MailSettingsFormRequest extends AdminFormRequest
+{
+    /**
+     * Return rules to validate mail settings POST data aganist.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'mail:host' => 'required|string',
+            'mail:port' => 'required|integer|between:1,65535',
+            'mail:encryption' => 'present|string|in:"",tls,ssl',
+            'mail:username' => 'string|max:255',
+            'mail:password' => 'string|max:255',
+            'mail:from:address' => 'required|string|email',
+            'mail:from:name' => 'string|max:255',
+        ];
+    }
+
+    /**
+     * Override the default normalization function for this type of request
+     * as we need to accept empty values on the keys.
+     *
+     * @param array $only
+     * @return array
+     */
+    public function normalize($only = [])
+    {
+        $keys = array_flip(array_keys($this->rules()));
+
+        if (empty($this->input('mail:password'))) {
+            unset($keys['mail:password']);
+        }
+
+        return $this->only(array_flip($keys));
+    }
+}