Add "Use alternative Web UI" option

src/webui/api/appcontroller.cpp

@@ -217,6 +217,9 @@ void AppController::preferencesAction()
     for (const Utils::Net::Subnet &subnet : asConst(pref->getWebUiAuthSubnetWhitelist()))
         authSubnetWhitelistStringList << Utils::Net::subnetToString(subnet);
     data["bypass_auth_subnet_whitelist"] = authSubnetWhitelistStringList.join("\n");
+    // Use alternative Web UI
+    data["alternative_webui_enabled"] = pref->isAltWebUiEnabled();
+    data["alternative_webui_path"] = pref->getWebUiRootFolder();
     // Security
     data["web_ui_clickjacking_protection_enabled"] = pref->isWebUiClickjackingProtectionEnabled();
     data["web_ui_csrf_protection_enabled"] = pref->isWebUiCSRFProtectionEnabled();
@@ -518,6 +521,11 @@ void AppController::setPreferencesAction()
         // recognize new lines and commas as delimiters
         pref->setWebUiAuthSubnetWhitelist(m["bypass_auth_subnet_whitelist"].toString().split(QRegularExpression("\n|,"), QString::SkipEmptyParts));
     }
+    // Use alternative Web UI
+    if ((it = m.find(QLatin1String("alternative_webui_enabled"))) != m.constEnd())
+        pref->setAltWebUiEnabled(it.value().toBool());
+    if ((it = m.find(QLatin1String("alternative_webui_path"))) != m.constEnd())
+        pref->setWebUiRootFolder(it.value().toString());
     // Security
     if (m.contains("web_ui_clickjacking_protection_enabled"))
         pref->setWebUiClickjackingProtectionEnabled(m["web_ui_clickjacking_protection_enabled"].toBool());

src/webui/www/private/preferences_content.html

@@ -705,6 +705,15 @@
             </div>
         </fieldset>
 
+        <fieldset class="settings">
+            <legend><input type="checkbox" id="use_alt_webui_checkbox" onclick="updateAlternativeWebUISettings();" />
+                <label for="use_alt_webui_checkbox">QBT_TR(Use alternative Web UI)QBT_TR[CONTEXT=OptionsDialog]</label></legend>
+            <div class="formRow">
+                <label for="webui_files_location_textarea">QBT_TR(Files location:)QBT_TR[CONTEXT=OptionsDialog]</label>
+                <input type="text" id="webui_files_location_textarea" />
+            </div>
+        </fieldset>
+
         <fieldset class="settings">
             <legend>QBT_TR(Security)QBT_TR[CONTEXT=OptionsDialog]</legend>
             <div class="formRow">
@@ -1005,6 +1014,11 @@
         $('bypass_auth_subnet_whitelist_textarea').setProperty('disabled', !isBypassAuthSubnetWhitelistEnabled);
     };
 
+    updateAlternativeWebUISettings = function() {
+        var isUseAlternativeWebUIEnabled = $('use_alt_webui_checkbox').getProperty('checked');
+        $('webui_files_location_textarea').setProperty('disabled', !isUseAlternativeWebUIEnabled);
+    };
+
     updateHostHeaderValidationSettings = function() {
         var isHostHeaderValidationEnabled = $('host_header_validation_checkbox').getProperty('checked');
         $('webui_domain_textarea').setProperty('disabled', !isHostHeaderValidationEnabled);
@@ -1286,6 +1300,11 @@
                     $('bypass_auth_subnet_whitelist_textarea').setProperty('value', pref.bypass_auth_subnet_whitelist);
                     updateBypasssAuthSettings();
 
+                    // Use alternative Web UI
+                    $('use_alt_webui_checkbox').setProperty('checked', pref.alternative_webui_enabled);
+                    $('webui_files_location_textarea').setProperty('value', pref.alternative_webui_path);
+                    updateAlternativeWebUISettings();
+
                     // Security
                     $('clickjacking_protection_checkbox').setProperty('checked', pref.web_ui_clickjacking_protection_enabled);
                     $('csrf_protection_checkbox').setProperty('checked', pref.web_ui_csrf_protection_enabled);
@@ -1590,6 +1609,10 @@
         settings.set('bypass_auth_subnet_whitelist_enabled', $('bypass_auth_subnet_whitelist_checkbox').getProperty('checked'));
         settings.set('bypass_auth_subnet_whitelist', $('bypass_auth_subnet_whitelist_textarea').getProperty('value'));
 
+        // Use alternative Web UI
+        settings.set('alternative_webui_enabled', $('use_alt_webui_checkbox').getProperty('checked'));
+        settings.set('alternative_webui_path', $('webui_files_location_textarea').getProperty('value'));
+
         settings.set('web_ui_clickjacking_protection_enabled', $('clickjacking_protection_checkbox').getProperty('checked'));
         settings.set('web_ui_csrf_protection_enabled', $('csrf_protection_checkbox').getProperty('checked'));
         settings.set('web_ui_host_header_validation_enabled', $('host_header_validation_checkbox').getProperty('checked'));