EventManager: check file size for more events

Also add some defensive code

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

internal/common/connection.go

@@ -793,7 +793,7 @@ func (c *BaseConnection) Rename(virtualSourcePath, virtualTargetPath string) err
 	return c.renameInternal(virtualSourcePath, virtualTargetPath, false, vfs.CheckParentDir)
 }
 
-func (c *BaseConnection) renameInternal(virtualSourcePath, virtualTargetPath string,
+func (c *BaseConnection) renameInternal(virtualSourcePath, virtualTargetPath string, //nolint:gocyclo
 	checkParentDestination bool, checks int,
 ) error {
 	if virtualSourcePath == virtualTargetPath {
@@ -816,7 +816,11 @@ func (c *BaseConnection) renameInternal(virtualSourcePath, virtualTargetPath str
 		return c.GetPermissionDeniedError()
 	}
 	initialSize := int64(-1)
-	if dstInfo, err := fsDst.Lstat(fsTargetPath); err == nil {
+	dstInfo, err := fsDst.Lstat(fsTargetPath)
+	if err != nil && !fsDst.IsNotExist(err) {
+		return err
+	}
+	if err == nil {
 		checkParentDestination = false
 		if dstInfo.IsDir() {
 			c.Log(logger.LevelWarn, "attempted to rename %q overwriting an existing directory %q",

internal/common/eventmanager.go

@@ -71,6 +71,9 @@ var (
 	// eventManager handle the supported event rules actions
 	eventManager          eventRulesContainer
 	multipartQuoteEscaper = strings.NewReplacer("\\", "\\\\", `"`, "\\\"")
+	fsEventsWithSize      = []string{operationPreDelete, OperationPreUpload, operationDelete,
+		operationCopy, operationDownload, operationFirstUpload, operationFirstDownload,
+		operationUpload}
 )
 
 func init() {
@@ -348,7 +351,7 @@ func (*eventRulesContainer) checkFsEventMatch(conditions *dataprovider.EventCond
 	if len(conditions.Options.Protocols) > 0 && !slices.Contains(conditions.Options.Protocols, params.Protocol) {
 		return false
 	}
-	if params.Event == operationUpload || params.Event == operationDownload {
+	if slices.Contains(fsEventsWithSize, params.Event) {
 		if conditions.Options.MinFileSize > 0 {
 			if params.FileSize < conditions.Options.MinFileSize {
 				return false

internal/vfs/fileinfo.go

@@ -105,6 +105,9 @@ func (fi *FileInfo) setMetadataFromPointerVal(value map[string]*string) {
 }
 
 func getMetadata(fi os.FileInfo) map[string]string {
+	if fi.Sys() == nil {
+		return nil
+	}
 	if val, ok := fi.Sys().(map[string]string); ok {
 		if len(val) > 0 {
 			return val