#include <string.h>
#include <ev.h>
#include <sys/mman.h>
-#include <sys/wait.h>
#include <X11/XKBlib.h>
#include <X11/extensions/XKBfile.h>
#include <xkbcommon/xkbcommon.h>
(void)(isutf(s[--(*i)]) || isutf(s[--(*i)]) || isutf(s[--(*i)]) || --(*i));
}
+static void turn_monitors_on(void) {
+ if (dpms)
+ dpms_set_mode(conn, XCB_DPMS_DPMS_MODE_ON);
+}
+
+static void turn_monitors_off(void) {
+ if (dpms)
+ dpms_set_mode(conn, XCB_DPMS_DPMS_MODE_OFF);
+}
+
/*
* Loads the XKB keymap from the X11 server and feeds it to xkbcommon.
* Necessary so that we can properly let xkbcommon track the keyboard state and
unlock_state = STATE_KEY_PRESSED;
}
-static void auth_failed(void) {
+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
}
}
-static void child_cb(EV_P_ ev_child *child_watcher, int revents) {
- if (child_watcher->rstatus != 0) {
- DEBUG("Authentication successfull\n");
- clear_password_memory();
-
- exit(0);
- } else {
- auth_failed();
- }
- ev_child_stop(main_loop, child_watcher);
- free(child_watcher);
-}
-
-static void input_done(void) {
- if (pam_state == STATE_PAM_VERIFY) {
- return;
- }
-
- 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();
-
- /* fork to unblock pam_authenticate */
- pid_t cpid = fork();
- if (cpid == 0) {
- exit(pam_authenticate(pam_handle, 0) == PAM_SUCCESS);
- } else if (cpid > 0) {
- clear_input();
- struct ev_child *child_watcher = calloc(sizeof(struct ev_io), 1);
- ev_child_init(child_watcher, child_cb, cpid, 0);
- ev_child_set(child_watcher, cpid, 0);
- ev_child_start(EV_DEFAULT_ child_watcher);
- } else if (cpid < 0) {
- DEBUG("Could not fork");
- if (pam_authenticate(pam_handle, 0) == PAM_SUCCESS) {
- DEBUG("successfully authenticated\n");
- clear_password_memory();
- exit(0);
- }
- auth_failed();
- }
-}
-
/*
* Called when the user releases a key. We need to leave the Mode_switch
* state when the user releases the Mode_switch key.
* hiding us) gets hidden.
*
*/
-static void handle_visibility_notify(xcb_visibility_notify_event_t *event) {
+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);
/* If this was the backspace or escape key we are back at an
* empty input, so turn off the screen if DPMS is enabled */
- if (dpms && input_position == 0)
- dpms_turn_off_screen(conn);
+ if (input_position == 0)
+ turn_monitors_off();
break;
case XCB_VISIBILITY_NOTIFY:
- handle_visibility_notify((xcb_visibility_notify_event_t*)event);
+ handle_visibility_notify(conn, (xcb_visibility_notify_event_t*)event);
break;
case XCB_MAP_NOTIFY:
}
}
+/*
+ * This function is called from a fork()ed child and will raise the i3lock
+ * window when the window is obscured, even when the main i3lock process is
+ * blocked due to PAM.
+ *
+ */
+static void raise_loop(xcb_window_t window) {
+ xcb_connection_t *conn;
+ xcb_generic_event_t *event;
+ int screens;
+
+ if ((conn = xcb_connect(NULL, &screens)) == NULL ||
+ xcb_connection_has_error(conn))
+ errx(EXIT_FAILURE, "Cannot open display\n");
+
+ /* We need to know about the window being obscured or getting destroyed. */
+ xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK,
+ (uint32_t[]){
+ XCB_EVENT_MASK_VISIBILITY_CHANGE |
+ XCB_EVENT_MASK_STRUCTURE_NOTIFY
+ });
+ xcb_flush(conn);
+
+ DEBUG("Watching window 0x%08x\n", window);
+ while ((event = xcb_wait_for_event(conn)) != NULL) {
+ if (event->response_type == 0) {
+ xcb_generic_error_t *error = (xcb_generic_error_t*)event;
+ DEBUG("X11 Error received! sequence 0x%x, error_code = %d\n",
+ error->sequence, error->error_code);
+ free(event);
+ continue;
+ }
+ /* Strip off the highest bit (set if the event is generated) */
+ int type = (event->response_type & 0x7F);
+ DEBUG("Read event of type %d\n", type);
+ switch (type) {
+ case XCB_VISIBILITY_NOTIFY:
+ handle_visibility_notify(conn, (xcb_visibility_notify_event_t*)event);
+ break;
+ case XCB_UNMAP_NOTIFY:
+ DEBUG("UnmapNotify for 0x%08x\n", (((xcb_unmap_notify_event_t*)event)->window));
+ if (((xcb_unmap_notify_event_t*)event)->window == window)
+ exit(EXIT_SUCCESS);
+ break;
+ case XCB_DESTROY_NOTIFY:
+ DEBUG("DestroyNotify for 0x%08x\n", (((xcb_destroy_notify_event_t*)event)->window));
+ if (((xcb_destroy_notify_event_t*)event)->window == window)
+ exit(EXIT_SUCCESS);
+ break;
+ default:
+ DEBUG("Unhandled event type %d\n", type);
+ break;
+ }
+ free(event);
+ }
+}
+
int main(int argc, char *argv[]) {
char *username;
char *image_path = NULL;
win = open_fullscreen_window(conn, screen, color, bg_pixmap);
xcb_free_pixmap(conn, bg_pixmap);
+ pid_t pid = fork();
+ /* The pid == -1 case is intentionally ignored here:
+ * While the child process is useful for preventing other windows from
+ * popping up while i3lock blocks, it is not critical. */
+ if (pid == 0) {
+ /* Child */
+ close(xcb_get_file_descriptor(conn));
+ raise_loop(win);
+ exit(EXIT_SUCCESS);
+ }
+
cursor = create_cursor(conn, screen, win, curs_choice);
grab_pointer_and_keyboard(conn, screen, cursor);
* keyboard. */
(void)load_keymap();
- if (dpms)
- dpms_turn_off_screen(conn);
+ turn_monitors_off();
/* Initialize the libev event loop. */
main_loop = EV_DEFAULT;
projects / i3 / i3lock / blobdiff