Protect uploads if folder for EditableFileField was removed

code/Control/UserDefinedFormController.php

@@ -28,6 +28,7 @@ use SilverStripe\UserForms\Model\EditableFormField\EditableFileField;
 use SilverStripe\UserForms\Model\Submission\SubmittedForm;
 use SilverStripe\UserForms\Model\Submission\SubmittedFileField;
 use SilverStripe\UserForms\Model\UserDefinedForm;
+use SilverStripe\Versioned\Versioned;
 use SilverStripe\View\ArrayData;
 use SilverStripe\View\Requirements;
 use SilverStripe\View\SSViewer;
@@ -53,6 +54,8 @@ class UserDefinedFormController extends PageController
     /** @var string The name of the folder where form submissions will be placed by default */
     private static $form_submissions_folder = 'Form-submissions';
 
+    private static string $file_upload_stage = Versioned::DRAFT;
+
     protected function init()
     {
         parent::init();
@@ -262,8 +265,15 @@ JS
             if (!empty($data[$field->Name])) {
                 if (in_array(EditableFileField::class, $field->getClassAncestry() ?? [])) {
                     if (!empty($_FILES[$field->Name]['name'])) {
-                        $foldername = $field->getFormField()->getFolderName();
+                        if (!$field->getFolderExists()) {
+                            $field->createProtectedFolder();
+                        }
                         
+                        $file = Versioned::withVersionedMode(function () use ($field, $form) {
+                            $stage = Injector::inst()->get(self::class)->config()->get('file_upload_stage');
+                            Versioned::set_stage($stage);
+
+                            $foldername = $field->getFormField()->getFolderName();
                             // create the file from post data
                             $upload = Upload::create();
                             try {
@@ -274,7 +284,7 @@ JS
                                     $form->sessionMessage($message['message'], ValidationResult::TYPE_ERROR);
                                 }
                                 Controller::curr()->redirectBack();
-                            return;
+                                return null;
                             }
                             /** @var AssetContainer|File $file */
                             $file = $upload->getFile();
@@ -282,6 +292,13 @@ JS
                             $file->UserFormUpload = UserFormFileExtension::USER_FORM_UPLOAD_TRUE;
                             $file->write();
 
+                            return $file;
+                        });
+
+                        if (is_null($file)) {
+                            return;
+                        }
+
                         // generate image thumbnail to show in asset-admin
                         // you can run userforms without asset-admin, so need to ensure asset-admin is installed
                         if (class_exists(AssetAdmin::class)) {

code/Model/EditableFormField/EditableFileField.php

@@ -194,7 +194,18 @@ class EditableFileField extends EditableFormField
         return $result;
     }
 
+    public function getFolderExists(): bool
+    {
+        return $this->Folder()->ID !== 0;
+    }
 
+    public function createProtectedFolder(): void
+    {
+        $folderName = sprintf('page-%d/upload-field-%d', $this->ParentID, $this->ID);
+        $folder = UserDefinedFormAdmin::getFormSubmissionFolder($folderName);
+        $this->FolderID = $folder->ID;
+        $this->write();
+    }
 
     public function getFormField()
     {

tests/php/Control/UserDefinedFormControllerTest.php

@@ -24,6 +24,7 @@ use SilverStripe\UserForms\Model\EditableFormField\EditableTextField;
 use SilverStripe\UserForms\Model\Recipient\EmailRecipient;
 use SilverStripe\UserForms\Model\Submission\SubmittedFormField;
 use SilverStripe\UserForms\Model\UserDefinedForm;
+use SilverStripe\Versioned\Versioned;
 use SilverStripe\View\ArrayData;
 use SilverStripe\View\SSViewer;
 use function filesize;
@@ -467,4 +468,47 @@ class UserDefinedFormControllerTest extends FunctionalTest
         $nodata = $this->findEmail('nodata@example.com', 'no-reply@example.com', 'Email Subject');
         $this->assertEmpty($nodata['AttachedFiles'], 'Recipients with HideFormData do not receive attachment');
     }
+
+    public function testMissingFolderCreated()
+    {
+        Config::modify()->set(Upload_Validator::class, 'use_is_uploaded_file', false);
+        $userForm = $this->setupFormFrontend('upload-form-without-folder');
+        $controller = UserDefinedFormController::create($userForm);
+        $field = $this->objFromFixture(EditableFileField::class, 'file-field-3');
+
+        $path = realpath(__DIR__ . '/fixtures/testfile.jpg');
+        $data = [
+            $field->Name => [
+                'name' => 'testfile.jpg',
+                'type' => 'image/jpeg',
+                'tmp_name' => $path,
+                'error' => 0,
+                'size' => filesize($path ?? ''),
+            ]
+        ];
+        $_FILES[$field->Name] = $data[$field->Name];
+
+        $controller->getRequest()->setSession(new Session([]));
+
+        $folderExistBefore = $field->getFolderExists();
+        $stageBefore = Versioned::get_stage();
+
+        $controller->process($data, $controller->Form());
+
+        $field = EditableFileField::get_by_id($field->ID);
+        $filter = [
+            'ParentID' => $field->Folder()->ID,
+            'Name' => 'testfile.jpg',
+        ];
+        $fileDraftCount = Versioned::get_by_stage(File::class, Versioned::DRAFT)->filter($filter)->count();
+        $fileLiveCount = Versioned::get_by_stage(File::class, Versioned::LIVE)->filter($filter)->count();
+
+        $folderExistAfter = $field->getFolderExists();
+
+        $this->assertFalse($folderExistBefore);
+        $this->assertTrue($folderExistAfter);
+        $this->assertEquals($stageBefore, Versioned::get_stage());
+        $this->assertEquals(1, $fileDraftCount);
+        $this->assertEquals(0, $fileLiveCount);
+    }
 }

tests/php/Model/EditableFormFieldTest.php

@@ -168,6 +168,51 @@ class EditableFormFieldTest extends FunctionalTest
         $this->assertNotContains('jpg', $formField->getValidator()->getAllowedExtensions());
     }
 
+    /**
+     * Test that if folder is not set or folder was removed,
+     * then getFormField() saves file in protected folder
+     */
+    public function testCreateProtectedFolder()
+    {
+        $fileField1 = $this->objFromFixture(EditableFileField::class, 'file-field-without-folder');
+        $fileField2 = $this->objFromFixture(EditableFileField::class, 'file-field-with-folder');
+
+        $fileField1->createProtectedFolder();
+
+        $formField1 = $fileField1->getFormField();
+        $formField2 = $fileField2->getFormField();
+
+        $canViewParent1 = $fileField1->Folder()->Parent()->Parent()->CanViewType;
+        $canViewParent2 = $fileField2->Folder()->Parent()->CanViewType;
+
+        $this->assertEquals('OnlyTheseUsers', $canViewParent1);
+        $this->assertEquals('Inherit', $canViewParent2);
+
+        $this->assertTrue(
+            (bool) preg_match(
+                sprintf(
+                    '/^Form-submissions\/page-%d\/upload-field-%d/',
+                    $fileField1->ParentID,
+                    $fileField1->ID
+                ),
+                $formField1->folderName,
+            )
+        );
+        $this->assertEquals('folder1/folder1-1/', $formField2->folderName);
+    }
+
+    /**
+     * Verify that folder is related to a field exist
+     */
+    public function testGetFolderExists()
+    {
+        $fileField1 = $this->objFromFixture(EditableFileField::class, 'file-field-without-folder');
+        $fileField2 = $this->objFromFixture(EditableFileField::class, 'file-field-with-folder');
+        
+        $this->assertFalse($fileField1->getFolderExists());
+        $this->assertTrue($fileField2->getFolderExists());
+    }
+
     /**
      * Verify that unique names are automatically generated for each formfield
      */

tests/php/Model/EditableFormFieldTest.yml

@@ -2,6 +2,13 @@ SilverStripe\Security\Group:
   admin:
     Title: Administrators
 
+SilverStripe\Assets\Folder:
+  user-form-folder-parent:
+    Title: folder1
+  user-form-folder-child:
+    Title: folder1-1
+    Parent: =>SilverStripe\Assets\Folder.user-form-folder-parent
+
 SilverStripe\UserForms\Model\EditableFormField\EditableTextField:
   basic-text:
     Name: basic_text_name
@@ -289,6 +296,14 @@ SilverStripe\UserForms\Model\EditableFormField\EditableFileField:
   file-field:
     Name: file-uploader
     Title: Set file
+  file-field-without-folder:
+    Name: file-uploader-without-folder
+    Title: Set file
+    FolderID: 0
+  file-field-with-folder:
+    Name: file-uploader-with-folder
+    Title: Set file
+    FolderID: =>SilverStripe\Assets\Folder.user-form-folder-child
 
 SilverStripe\UserForms\Model\UserDefinedForm:
   basic-form-page:

tests/php/UserFormsTest.yml

@@ -275,6 +275,10 @@ SilverStripe\UserForms\Model\EditableFormField\EditableFileField:
   file-field-2:
     Name: FileUploadField
     Title: File Upload Field
+  file-field-3:
+    Name: FileUploadField
+    Title: File Upload Field Without Folder
+    Folder: ''
 
 SilverStripe\UserForms\Model\EditableFormField\EditableFieldGroupEnd:
   group1end:
@@ -495,6 +499,11 @@ SilverStripe\UserForms\Model\UserDefinedForm:
       - =>SilverStripe\UserForms\Model\Recipient\EmailRecipient.upload-recipient
       - =>SilverStripe\UserForms\Model\Recipient\EmailRecipient.upload-no-data
 
+  upload-form-without-folder:
+    Title: 'Form with upload field without folder'
+    Fields:
+      - =>SilverStripe\UserForms\Model\EditableFormField\EditableFileField.file-field-3
+
 SilverStripe\UserForms\Model\EditableCustomRule:
   rule1:
     Display: Show