clear password buffer with ctrl-u in swaylock

also prevent screen redraws on modifier key presses

1 files changed, 34 insertions, 0 deletions

diff --git a/swaylock/main.c b/swaylock/main.c
index 777bca09..96e3ec29 100644
--- a/swaylock/main.c
+++ b/swaylock/main.c
@@ -144,6 +144,40 @@ void notify_key(enum wl_keyboard_key_state state, xkb_keysym_t sym, uint32_t cod
                                 }
                                 break;
                         }
+                case XKB_KEY_Control_L: // fallthrough
+                case XKB_KEY_Control_R: // fallthrough
+                case XKB_KEY_Shift_L: // fallthrough
+                case XKB_KEY_Shift_R: // fallthrough
+                case XKB_KEY_Caps_Lock: // fallthrough
+                case XKB_KEY_Shift_Lock: // fallthrough
+                case XKB_KEY_Meta_L: // fallthrough
+                case XKB_KEY_Meta_R: // fallthrough
+                case XKB_KEY_Alt_L: // fallthrough
+                case XKB_KEY_Alt_R: // fallthrough
+                case XKB_KEY_Super_L: // fallthrough
+                case XKB_KEY_Super_R: // fallthrough
+                case XKB_KEY_Hyper_L: // fallthrough
+                case XKB_KEY_Hyper_R: // fallthrough
+                        {
+                                // don't draw screen on modifier keys
+                                break;
+                        }
+                case XKB_KEY_u: // fallthrough
+                case XKB_KEY_U:
+                        {
+                                // clear password buffer on ctrl-u
+                                if (xkb_state_mod_name_is_active(registry->input->xkb.state,
+                                                XKB_MOD_NAME_CTRL, XKB_STATE_MODS_EFFECTIVE) > 0) {
+                                        render_data.auth_state = AUTH_STATE_BACKSPACE;
+                                        redraw_screen = 1;
+
+                                        password_size = 1024;
+                                        free(password);
+                                        password = malloc(password_size);
+                                        password[0] = '\0';
+                                        break;
+                                }
+                        }
                 default:
                         {
                                 render_data.auth_state = AUTH_STATE_INPUT;