clipboard: don't store sensitive mime types in history

fixes #1185

core/internal/server/clipboard/manager.go

@@ -11,14 +11,16 @@ import (
 	"io"
 	"os"
 	"path/filepath"
+	"slices"
 	"strings"
 	"syscall"
 	"time"
 
+	"hash/fnv"
+
 	"github.com/fsnotify/fsnotify"
 	_ "golang.org/x/image/bmp"
 	_ "golang.org/x/image/tiff"
-	"hash/fnv"
 
 	bolt "go.etcd.io/bbolt"
 
@@ -28,6 +30,11 @@ import (
 	wlclient "github.com/AvengeMedia/DankMaterialShell/core/pkg/go-wayland/wayland/client"
 )
 
+// These mime types wont be stored in history
+var sensitiveMimeTypes = []string{
+	"x-kde-passwordManagerHint",
+}
+
 func NewManager(wlCtx wlcontext.WaylandContext, config Config) (*Manager, error) {
 	if config.Disabled {
 		return nil, fmt.Errorf("clipboard disabled in config")
@@ -253,6 +260,10 @@ func (m *Manager) setupDataDeviceSync() {
 			return
 		}
 
+		if m.hasSensitiveMimeType(mimes) {
+			return
+		}
+
 		preferredMime := m.selectMimeType(mimes)
 		if preferredMime == "" {
 			return
@@ -492,6 +503,12 @@ func extractHash(data []byte) uint64 {
 	return binary.BigEndian.Uint64(data[len(data)-8:])
 }
 
+func (m *Manager) hasSensitiveMimeType(mimes []string) bool {
+	return slices.ContainsFunc(mimes, func(mime string) bool {
+		return slices.Contains(sensitiveMimeTypes, mime)
+	})
+}
+
 func (m *Manager) selectMimeType(mimes []string) string {
 	preferredTypes := []string{
 		"text/plain;charset=utf-8",