make keylogger optional

Overlord-Client/cmd/agent/keylogger/keylogger_disabled.go

@@ -0,0 +1,24 @@
+//go:build nokeylogger
+// +build nokeylogger
+
+package keylogger
+
+import "time"
+
+type Keylogger struct{}
+
+type FileInfo struct {
+	Name string
+	Size int64
+	Date time.Time
+}
+
+func New() *Keylogger { return nil }
+
+func (k *Keylogger) Start() error              { return nil }
+func (k *Keylogger) Stop()                     {}
+func (k *Keylogger) ListFiles() ([]FileInfo, error) { return nil, nil }
+func (k *Keylogger) ReadFile(string) ([]byte, error) { return nil, nil }
+func (k *Keylogger) ClearAll() error           { return nil }
+func (k *Keylogger) DeleteFile(string) error   { return nil }
+func (k *Keylogger) FlushNow()                 {}