#2560 validate keycodes before calling XTest

git-svn-id: https://xpra.org/svn/Xpra/trunk@25059 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/xpra/x11/x11_server_core.py

@@ -489,7 +489,7 @@ def clear_keys_pressed(self):
             keylog("clearing keys pressed: %s", self.keys_pressed)
             with xsync:
                 for keycode in self.keys_pressed:
-                    X11Keyboard.xtest_fake_key(keycode, False)
+                    self.fake_key(keycode, False)
             self.keys_pressed = {}
         #this will take care of any remaining ones we are not aware of:
         #(there should not be any - but we want to be certain)
@@ -792,6 +792,9 @@ def X11_ungrab(self):
 
     def fake_key(self, keycode, press):
         keylog("fake_key(%s, %s)", keycode, press)
+        mink, maxk = X11Keyboard.get_minmax_keycodes()
+        if keycode<mink or keycode>maxk:
+            return
         with xsync:
             X11Keyboard.xtest_fake_key(keycode, press)