+static void input_done(void) {
+ if (clear_pam_wrong_timeout) {
+ ev_timer_stop(main_loop, clear_pam_wrong_timeout);
+ free(clear_pam_wrong_timeout);
+ clear_pam_wrong_timeout = NULL;
+ }
+
+ pam_state = STATE_PAM_VERIFY;
+ redraw_screen();
+
+ if (pam_authenticate(pam_handle, 0) == PAM_SUCCESS) {
+ DEBUG("successfully authenticated\n");
+ clear_password_memory();
+ /* Turn the screen on, as it may have been turned off
+ * on release of the 'enter' key. */
+ turn_monitors_on();
+ exit(0);
+ }
+
+ if (debug_mode)
+ fprintf(stderr, "Authentication failure\n");
+
+ pam_state = STATE_PAM_WRONG;
+ clear_input();
+ redraw_screen();
+
+ /* Clear this state after 2 seconds (unless the user enters another
+ * password during that time). */
+ ev_now_update(main_loop);
+ if ((clear_pam_wrong_timeout = calloc(sizeof(struct ev_timer), 1))) {
+ ev_timer_init(clear_pam_wrong_timeout, clear_pam_wrong, 2.0, 0.);
+ ev_timer_start(main_loop, clear_pam_wrong_timeout);
+ }
+
+ /* Cancel the clear_indicator_timeout, it would hide the unlock indicator
+ * too early. */
+ stop_clear_indicator_timeout();
+
+ /* beep on authentication failure, if enabled */
+ if (beep) {
+ xcb_bell(conn, 100);
+ xcb_flush(conn);
+ }
+}
+
+/*
+ * Called when the user releases a key. We need to leave the Mode_switch
+ * state when the user releases the Mode_switch key.
+ *
+ */
+static void handle_key_release(xcb_key_release_event_t *event) {
+ xkb_state_update_key(xkb_state, event->detail, XKB_KEY_UP);
+}
+
+static void redraw_timeout(EV_P_ ev_timer *w, int revents) {
+ redraw_screen();
+
+ ev_timer_stop(main_loop, w);
+ free(w);
+}
+
+/*
+ * Handle key presses. Fixes state, then looks up the key symbol for the
+ * given keycode, then looks up the key symbol (as UCS-2), converts it to
+ * UTF-8 and stores it in the password array.
+ *
+ */
+static void handle_key_press(xcb_key_press_event_t *event) {
+ xkb_keysym_t ksym;
+ char buffer[128];
+ int n;
+ bool ctrl;
+
+ ksym = xkb_state_key_get_one_sym(xkb_state, event->detail);
+ ctrl = xkb_state_mod_name_is_active(xkb_state, "Control", XKB_STATE_MODS_DEPRESSED);
+ xkb_state_update_key(xkb_state, event->detail, XKB_KEY_DOWN);
+
+ /* The buffer will be null-terminated, so n >= 2 for 1 actual character. */
+ memset(buffer, '\0', sizeof(buffer));
+ n = xkb_keysym_to_utf8(ksym, buffer, sizeof(buffer));
+
+ switch (ksym) {
+ case XKB_KEY_Return:
+ case XKB_KEY_KP_Enter:
+ case XKB_KEY_XF86ScreenSaver:
+ if (ignore_empty_password && input_position == 0) {
+ clear_input();
+ return;
+ }
+ password[input_position] = '\0';
+ unlock_state = STATE_KEY_PRESSED;
+ redraw_screen();
+ input_done();
+ return;
+
+ case XKB_KEY_u:
+ if (ctrl) {
+ DEBUG("C-u pressed\n");
+ clear_input();
+ return;
+ }
+ break;
+
+ case XKB_KEY_Escape:
+ clear_input();
+ return;
+
+ case XKB_KEY_BackSpace:
+ if (input_position == 0)
+ return;
+
+ /* decrement input_position to point to the previous glyph */
+ u8_dec(password, &input_position);
+ password[input_position] = '\0';
+
+ /* Hide the unlock indicator after a bit if the password buffer is
+ * empty. */
+ start_clear_indicator_timeout();
+ unlock_state = STATE_BACKSPACE_ACTIVE;
+ redraw_screen();
+ unlock_state = STATE_KEY_PRESSED;
+ return;
+ }
+
+ if ((input_position + 8) >= sizeof(password))
+ return;
+
+#if 0
+ /* FIXME: handle all of these? */
+ printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
+ printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
+ printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
+ printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
+ printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
+ printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
+ printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
+#endif
+
+ if (n < 2)
+ return;
+
+ /* store it in the password array as UTF-8 */
+ memcpy(password+input_position, buffer, n-1);
+ input_position += n-1;
+ DEBUG("current password = %.*s\n", input_position, password);
+
+ unlock_state = STATE_KEY_ACTIVE;
+ redraw_screen();
+ unlock_state = STATE_KEY_PRESSED;
+
+ struct ev_timer *timeout = calloc(sizeof(struct ev_timer), 1);
+ if (timeout) {
+ ev_timer_init(timeout, redraw_timeout, 0.25, 0.);
+ ev_timer_start(main_loop, timeout);
+ }
+
+ stop_clear_indicator_timeout();
+}
+
+/*
+ * A visibility notify event will be received when the visibility (= can the
+ * user view the complete window) changes, so for example when a popup overlays
+ * some area of the i3lock window.
+ *
+ * In this case, we raise our window on top so that the popup (or whatever is
+ * hiding us) gets hidden.
+ *
+ */
+static void handle_visibility_notify(xcb_connection_t *conn,
+ xcb_visibility_notify_event_t *event) {
+ if (event->state != XCB_VISIBILITY_UNOBSCURED) {
+ uint32_t values[] = { XCB_STACK_MODE_ABOVE };
+ xcb_configure_window(conn, event->window, XCB_CONFIG_WINDOW_STACK_MODE, values);
+ xcb_flush(conn);
+ }
+}
+
+/*
+ * Called when the keyboard mapping changes. We update our symbols.
+ *
+ */
+static void handle_mapping_notify(xcb_mapping_notify_event_t *event) {
+ /* We ignore errors — if the new keymap cannot be loaded it’s better if the
+ * screen stays locked and the user intervenes by using killall i3lock. */
+ (void)load_keymap();
+}
+
+/*
+ * Called when the properties on the root window change, e.g. when the screen
+ * resolution changes. If so we update the window to cover the whole screen
+ * and also redraw the image, if any.
+ *
+ */
+void handle_screen_resize(void) {
+ xcb_get_geometry_cookie_t geomc;
+ xcb_get_geometry_reply_t *geom;
+ geomc = xcb_get_geometry(conn, screen->root);
+ if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL)
+ return;
+
+ if (last_resolution[0] == geom->width &&
+ last_resolution[1] == geom->height) {
+ free(geom);
+ return;
+ }
+
+ last_resolution[0] = geom->width;
+ last_resolution[1] = geom->height;
+
+ free(geom);
+
+ redraw_screen();
+
+ uint32_t mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
+ xcb_configure_window(conn, win, mask, last_resolution);
+ xcb_flush(conn);
+
+ xinerama_query_screens();
+ redraw_screen();
+}