Maintenance Allowed IP list

modules/cms/classes/Controller.php

@@ -166,6 +166,7 @@ public function run($url = '/')
         if (
             MaintenanceSetting::isConfigured() &&
             MaintenanceSetting::get('is_enabled', false) &&
+            !MaintenanceSetting::isAllowedIp(Request::ip()) &&
             !BackendAuth::getUser()
         ) {
             if (!Request::ajax()) {

modules/cms/lang/en/lang.php

@@ -100,6 +100,13 @@
         'is_enabled' => 'Enable maintenance mode',
         'is_enabled_comment' => 'Select the page to show when maintenance mode is activated.',
         'hint' => 'Maintenance mode will display the maintenance page to visitors who are not signed in to the back-end area.',
+        'allowed_ips' => [
+            'name' => 'Allowed IP addresses',
+            'description' => 'IP addresses that are permitted to view the site while maintenance mode is active',
+            'prompt' => 'Add an IP Address',
+            'ip' => 'IP address',
+            'label' => 'Description'
+        ]
     ],
     'page' => [
         'not_found_name' => "The page ':name' is not found",

modules/cms/models/MaintenanceSetting.php

@@ -3,6 +3,8 @@
 use Model;
 use Cms\Classes\Page;
 use Cms\Classes\Theme;
+use Winter\Storm\Support\Arr;
+use Symfony\Component\HttpFoundation\IpUtils;
 use ApplicationException;
 
 /**
@@ -89,4 +91,15 @@ public function afterFetch()
             $this->is_enabled = false;
         }
     }
+
+    /**
+     * Check if the provided IP is in the allowed IP list.
+     *
+     * @param string $ip
+     * @return bool
+     */
+    public static function isAllowedIp(string $ip): bool
+    {
+        return IpUtils::checkIp($ip, Arr::pluck(static::get('allowed_ips', []), 'ip'));
+    }
 }

modules/cms/models/maintenancesetting/fields.yaml

@@ -15,4 +15,21 @@ fields:
 
     cms_page:
         type: dropdown
-        cssClass: checkbox-align
+        cssClass: checkbox-align
+
+    allowed_ips:
+        label: cms::lang.maintenance.allowed_ips.name
+        type: repeater
+        commentAbove: cms::lang.maintenance.allowed_ips.description
+        prompt: cms::lang.maintenance.allowed_ips.prompt
+        cssClass: checkbox-align
+        form:
+            fields:
+                ip:
+                    label: cms::lang.maintenance.allowed_ips.ip
+                    type: text
+                    span: left
+                label:
+                    label: cms::lang.maintenance.allowed_ips.label
+                    type: text
+                    span: right