2 * vim:ts=4:sw=4:expandtab
4 * © 2010-2013 Michael Stapelberg
6 * See LICENSE for licensing information
12 #include <sys/types.h>
22 #include <security/pam_appl.h>
27 #include <xkbcommon/xkbcommon.h>
28 #include <xkbcommon/xkbcommon-x11.h>
30 #include <cairo/cairo-xcb.h>
35 #include "unlock_indicator.h"
38 #define TSTAMP_N_SECS(n) (n * 1.0)
39 #define TSTAMP_N_MINS(n) (60 * TSTAMP_N_SECS(n))
40 #define START_TIMER(timer_obj, timeout, callback) \
41 timer_obj = start_timer(timer_obj, timeout, callback)
42 #define STOP_TIMER(timer_obj) \
43 timer_obj = stop_timer(timer_obj)
45 typedef void (*ev_callback_t)(EV_P_ ev_timer *w, int revents);
47 /* We need this for libxkbfile */
48 char color[7] = "ffffff";
49 int inactivity_timeout = 30;
50 uint32_t last_resolution[2];
52 static xcb_cursor_t cursor;
53 static pam_handle_t *pam_handle;
54 int input_position = 0;
55 /* Holds the password you enter (in UTF-8). */
56 static char password[512];
57 static bool beep = false;
58 bool debug_mode = false;
59 static bool dpms = false;
60 bool unlock_indicator = true;
61 static bool dont_fork = false;
62 struct ev_loop *main_loop;
63 static struct ev_timer *clear_pam_wrong_timeout;
64 static struct ev_timer *clear_indicator_timeout;
65 static struct ev_timer *dpms_timeout;
66 static struct ev_timer *discard_passwd_timeout;
67 extern unlock_state_t unlock_state;
68 extern pam_state_t pam_state;
69 int failed_attempts = 0;
70 bool show_failed_attempts = false;
72 static struct xkb_state *xkb_state;
73 static struct xkb_context *xkb_context;
74 static struct xkb_keymap *xkb_keymap;
75 static uint8_t xkb_base_event;
76 static uint8_t xkb_base_error;
78 cairo_surface_t *img = NULL;
80 bool ignore_empty_password = false;
81 bool skip_repeated_empty_password = false;
83 /* isutf, u8_dec © 2005 Jeff Bezanson, public domain */
84 #define isutf(c) (((c) & 0xC0) != 0x80)
87 * Decrements i to point to the previous unicode glyph
90 void u8_dec(char *s, int *i) {
91 (void)(isutf(s[--(*i)]) || isutf(s[--(*i)]) || isutf(s[--(*i)]) || --(*i));
94 static void turn_monitors_on(void) {
96 dpms_set_mode(conn, XCB_DPMS_DPMS_MODE_ON);
99 static void turn_monitors_off(void) {
101 dpms_set_mode(conn, XCB_DPMS_DPMS_MODE_OFF);
105 * Loads the XKB keymap from the X11 server and feeds it to xkbcommon.
106 * Necessary so that we can properly let xkbcommon track the keyboard state and
107 * translate keypresses to utf-8.
110 static bool load_keymap(void) {
111 if (xkb_context == NULL) {
112 if ((xkb_context = xkb_context_new(0)) == NULL) {
113 fprintf(stderr, "[i3lock] could not create xkbcommon context\n");
118 xkb_keymap_unref(xkb_keymap);
120 int32_t device_id = xkb_x11_get_core_keyboard_device_id(conn);
121 DEBUG("device = %d\n", device_id);
122 if ((xkb_keymap = xkb_x11_keymap_new_from_device(xkb_context, conn, device_id, 0)) == NULL) {
123 fprintf(stderr, "[i3lock] xkb_x11_keymap_new_from_device failed\n");
127 struct xkb_state *new_state =
128 xkb_x11_state_new_from_device(xkb_keymap, conn, device_id);
129 if (new_state == NULL) {
130 fprintf(stderr, "[i3lock] xkb_x11_state_new_from_device failed\n");
134 xkb_state_unref(xkb_state);
135 xkb_state = new_state;
141 * Clears the memory which stored the password to be a bit safer against
145 static void clear_password_memory(void) {
146 /* A volatile pointer to the password buffer to prevent the compiler from
147 * optimizing this out. */
148 volatile char *vpassword = password;
149 for (int c = 0; c < sizeof(password); c++)
150 /* We store a non-random pattern which consists of the (irrelevant)
151 * index plus (!) the value of the beep variable. This prevents the
152 * compiler from optimizing the calls away, since the value of 'beep'
153 * is not known at compile-time. */
154 vpassword[c] = c + (int)beep;
157 ev_timer* start_timer(ev_timer *timer_obj, ev_tstamp timeout, ev_callback_t callback) {
159 ev_timer_stop(main_loop, timer_obj);
160 ev_timer_set(timer_obj, timeout, 0.);
161 ev_timer_start(main_loop, timer_obj);
163 /* When there is no memory, we just don’t have a timeout. We cannot
164 * exit() here, since that would effectively unlock the screen. */
165 timer_obj = calloc(sizeof(struct ev_timer), 1);
167 ev_timer_init(timer_obj, callback, timeout, 0.);
168 ev_timer_start(main_loop, timer_obj);
174 ev_timer* stop_timer(ev_timer *timer_obj) {
176 ev_timer_stop(main_loop, timer_obj);
183 * Resets pam_state to STATE_PAM_IDLE 2 seconds after an unsuccessful
184 * authentication event.
187 static void clear_pam_wrong(EV_P_ ev_timer *w, int revents) {
188 DEBUG("clearing pam wrong\n");
189 pam_state = STATE_PAM_IDLE;
190 unlock_state = STATE_STARTED;
193 /* Now free this timeout. */
194 STOP_TIMER(clear_pam_wrong_timeout);
197 static void clear_indicator_cb(EV_P_ ev_timer *w, int revents) {
199 STOP_TIMER(clear_indicator_timeout);
202 static void clear_input(void) {
204 clear_password_memory();
205 password[input_position] = '\0';
207 /* Hide the unlock indicator after a bit if the password buffer is
209 START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
210 unlock_state = STATE_BACKSPACE_ACTIVE;
212 unlock_state = STATE_KEY_PRESSED;
215 static void turn_off_monitors_cb(EV_P_ ev_timer *w, int revents) {
216 if (input_position == 0)
219 STOP_TIMER(dpms_timeout);
222 static void discard_passwd_cb(EV_P_ ev_timer *w, int revents) {
225 STOP_TIMER(discard_passwd_timeout);
228 static void input_done(void) {
229 STOP_TIMER(clear_pam_wrong_timeout);
230 pam_state = STATE_PAM_VERIFY;
233 if (pam_authenticate(pam_handle, 0) == PAM_SUCCESS) {
234 DEBUG("successfully authenticated\n");
235 clear_password_memory();
236 /* Turn the screen on, as it may have been turned off
237 * on release of the 'enter' key. */
243 fprintf(stderr, "Authentication failure\n");
245 pam_state = STATE_PAM_WRONG;
246 failed_attempts += 1;
250 /* Clear this state after 2 seconds (unless the user enters another
251 * password during that time). */
252 ev_now_update(main_loop);
253 START_TIMER(clear_pam_wrong_timeout, TSTAMP_N_SECS(2), clear_pam_wrong);
255 /* Cancel the clear_indicator_timeout, it would hide the unlock indicator
257 STOP_TIMER(clear_indicator_timeout);
259 /* beep on authentication failure, if enabled */
266 static void redraw_timeout(EV_P_ ev_timer *w, int revents) {
271 static bool skip_without_validation(void) {
272 if (input_position != 0)
275 if (skip_repeated_empty_password || ignore_empty_password)
282 * Handle key presses. Fixes state, then looks up the key symbol for the
283 * given keycode, then looks up the key symbol (as UCS-2), converts it to
284 * UTF-8 and stores it in the password array.
287 static void handle_key_press(xcb_key_press_event_t *event) {
293 ksym = xkb_state_key_get_one_sym(xkb_state, event->detail);
294 ctrl = xkb_state_mod_name_is_active(xkb_state, "Control", XKB_STATE_MODS_DEPRESSED);
296 /* The buffer will be null-terminated, so n >= 2 for 1 actual character. */
297 memset(buffer, '\0', sizeof(buffer));
298 n = xkb_keysym_to_utf8(ksym, buffer, sizeof(buffer));
302 case XKB_KEY_KP_Enter:
303 case XKB_KEY_XF86ScreenSaver:
304 if (pam_state == STATE_PAM_WRONG)
307 if (skip_without_validation()) {
311 password[input_position] = '\0';
312 unlock_state = STATE_KEY_PRESSED;
315 skip_repeated_empty_password = true;
318 skip_repeated_empty_password = false;
324 DEBUG("C-u pressed\n");
334 case XKB_KEY_BackSpace:
335 if (input_position == 0)
338 /* decrement input_position to point to the previous glyph */
339 u8_dec(password, &input_position);
340 password[input_position] = '\0';
342 /* Hide the unlock indicator after a bit if the password buffer is
344 START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
345 unlock_state = STATE_BACKSPACE_ACTIVE;
347 unlock_state = STATE_KEY_PRESSED;
351 if ((input_position + 8) >= sizeof(password))
355 /* FIXME: handle all of these? */
356 printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
357 printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
358 printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
359 printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
360 printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
361 printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
362 printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
368 /* store it in the password array as UTF-8 */
369 memcpy(password+input_position, buffer, n-1);
370 input_position += n-1;
371 DEBUG("current password = %.*s\n", input_position, password);
373 unlock_state = STATE_KEY_ACTIVE;
375 unlock_state = STATE_KEY_PRESSED;
377 struct ev_timer *timeout = NULL;
378 START_TIMER(timeout, TSTAMP_N_SECS(0.25), redraw_timeout);
379 STOP_TIMER(clear_indicator_timeout);
380 START_TIMER(discard_passwd_timeout, TSTAMP_N_MINS(3), discard_passwd_cb);
384 * A visibility notify event will be received when the visibility (= can the
385 * user view the complete window) changes, so for example when a popup overlays
386 * some area of the i3lock window.
388 * In this case, we raise our window on top so that the popup (or whatever is
389 * hiding us) gets hidden.
392 static void handle_visibility_notify(xcb_connection_t *conn,
393 xcb_visibility_notify_event_t *event) {
394 if (event->state != XCB_VISIBILITY_UNOBSCURED) {
395 uint32_t values[] = { XCB_STACK_MODE_ABOVE };
396 xcb_configure_window(conn, event->window, XCB_CONFIG_WINDOW_STACK_MODE, values);
402 * Called when the keyboard mapping changes. We update our symbols.
404 * We ignore errors — if the new keymap cannot be loaded it’s better if the
405 * screen stays locked and the user intervenes by using killall i3lock.
408 static void process_xkb_event(xcb_generic_event_t *gevent) {
411 uint8_t response_type;
414 xcb_timestamp_t time;
417 xcb_xkb_new_keyboard_notify_event_t new_keyboard_notify;
418 xcb_xkb_map_notify_event_t map_notify;
419 xcb_xkb_state_notify_event_t state_notify;
420 } *event = (union xkb_event*)gevent;
422 DEBUG("process_xkb_event for device %d\n", event->any.deviceID);
424 if (event->any.deviceID != xkb_x11_get_core_keyboard_device_id(conn))
428 * XkbNewKkdNotify and XkbMapNotify together capture all sorts of keymap
429 * updates (e.g. xmodmap, xkbcomp, setxkbmap), with minimal redundent
432 switch (event->any.xkbType) {
433 case XCB_XKB_NEW_KEYBOARD_NOTIFY:
434 if (event->new_keyboard_notify.changed & XCB_XKB_NKN_DETAIL_KEYCODES)
438 case XCB_XKB_MAP_NOTIFY:
442 case XCB_XKB_STATE_NOTIFY:
443 xkb_state_update_mask(xkb_state,
444 event->state_notify.baseMods,
445 event->state_notify.latchedMods,
446 event->state_notify.lockedMods,
447 event->state_notify.baseGroup,
448 event->state_notify.latchedGroup,
449 event->state_notify.lockedGroup);
455 * Called when the properties on the root window change, e.g. when the screen
456 * resolution changes. If so we update the window to cover the whole screen
457 * and also redraw the image, if any.
460 void handle_screen_resize(void) {
461 xcb_get_geometry_cookie_t geomc;
462 xcb_get_geometry_reply_t *geom;
463 geomc = xcb_get_geometry(conn, screen->root);
464 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL)
467 if (last_resolution[0] == geom->width &&
468 last_resolution[1] == geom->height) {
473 last_resolution[0] = geom->width;
474 last_resolution[1] = geom->height;
480 uint32_t mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
481 xcb_configure_window(conn, win, mask, last_resolution);
484 xinerama_query_screens();
489 * Callback function for PAM. We only react on password request callbacks.
492 static int conv_callback(int num_msg, const struct pam_message **msg,
493 struct pam_response **resp, void *appdata_ptr)
498 /* PAM expects an array of responses, one for each message */
499 if ((*resp = calloc(num_msg, sizeof(struct pam_response))) == NULL) {
504 for (int c = 0; c < num_msg; c++) {
505 if (msg[c]->msg_style != PAM_PROMPT_ECHO_OFF &&
506 msg[c]->msg_style != PAM_PROMPT_ECHO_ON)
509 /* return code is currently not used but should be set to zero */
510 resp[c]->resp_retcode = 0;
511 if ((resp[c]->resp = strdup(password)) == NULL) {
521 * This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
522 * See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
525 static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
526 /* empty, because xcb_prepare_cb and xcb_check_cb are used */
530 * Flush before blocking (and waiting for new events)
533 static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
538 * Instead of polling the X connection socket we leave this to
539 * xcb_poll_for_event() which knows better than we can ever know.
542 static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
543 xcb_generic_event_t *event;
545 if (xcb_connection_has_error(conn))
546 errx(EXIT_FAILURE, "X11 connection broke, did your server terminate?\n");
548 while ((event = xcb_poll_for_event(conn)) != NULL) {
549 if (event->response_type == 0) {
550 xcb_generic_error_t *error = (xcb_generic_error_t*)event;
552 fprintf(stderr, "X11 Error received! sequence 0x%x, error_code = %d\n",
553 error->sequence, error->error_code);
558 /* Strip off the highest bit (set if the event is generated) */
559 int type = (event->response_type & 0x7F);
563 handle_key_press((xcb_key_press_event_t*)event);
566 case XCB_KEY_RELEASE:
567 /* If this was the backspace or escape key we are back at an
568 * empty input, so turn off the screen if DPMS is enabled, but
569 * only do that after some timeout: maybe user mistyped and
570 * will type again right away */
571 START_TIMER(dpms_timeout, TSTAMP_N_SECS(inactivity_timeout),
572 turn_off_monitors_cb);
575 case XCB_VISIBILITY_NOTIFY:
576 handle_visibility_notify(conn, (xcb_visibility_notify_event_t*)event);
581 /* After the first MapNotify, we never fork again. We don’t
582 * expect to get another MapNotify, but better be sure… */
585 /* In the parent process, we exit */
589 ev_loop_fork(EV_DEFAULT);
593 case XCB_CONFIGURE_NOTIFY:
594 handle_screen_resize();
598 if (type == xkb_base_event)
599 process_xkb_event(event);
607 * This function is called from a fork()ed child and will raise the i3lock
608 * window when the window is obscured, even when the main i3lock process is
609 * blocked due to PAM.
612 static void raise_loop(xcb_window_t window) {
613 xcb_connection_t *conn;
614 xcb_generic_event_t *event;
617 if ((conn = xcb_connect(NULL, &screens)) == NULL ||
618 xcb_connection_has_error(conn))
619 errx(EXIT_FAILURE, "Cannot open display\n");
621 /* We need to know about the window being obscured or getting destroyed. */
622 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK,
624 XCB_EVENT_MASK_VISIBILITY_CHANGE |
625 XCB_EVENT_MASK_STRUCTURE_NOTIFY
629 DEBUG("Watching window 0x%08x\n", window);
630 while ((event = xcb_wait_for_event(conn)) != NULL) {
631 if (event->response_type == 0) {
632 xcb_generic_error_t *error = (xcb_generic_error_t*)event;
633 DEBUG("X11 Error received! sequence 0x%x, error_code = %d\n",
634 error->sequence, error->error_code);
638 /* Strip off the highest bit (set if the event is generated) */
639 int type = (event->response_type & 0x7F);
640 DEBUG("Read event of type %d\n", type);
642 case XCB_VISIBILITY_NOTIFY:
643 handle_visibility_notify(conn, (xcb_visibility_notify_event_t*)event);
645 case XCB_UNMAP_NOTIFY:
646 DEBUG("UnmapNotify for 0x%08x\n", (((xcb_unmap_notify_event_t*)event)->window));
647 if (((xcb_unmap_notify_event_t*)event)->window == window)
650 case XCB_DESTROY_NOTIFY:
651 DEBUG("DestroyNotify for 0x%08x\n", (((xcb_destroy_notify_event_t*)event)->window));
652 if (((xcb_destroy_notify_event_t*)event)->window == window)
656 DEBUG("Unhandled event type %d\n", type);
663 int main(int argc, char *argv[]) {
664 struct passwd *pw = getpwuid(getuid());
666 char *image_path = NULL;
668 struct pam_conv conv = {conv_callback, NULL};
669 int curs_choice = CURS_NONE;
672 struct option longopts[] = {
673 {"version", no_argument, NULL, 'v'},
674 {"nofork", no_argument, NULL, 'n'},
675 {"beep", no_argument, NULL, 'b'},
676 {"dpms", no_argument, NULL, 'd'},
677 {"color", required_argument, NULL, 'c'},
678 {"pointer", required_argument, NULL , 'p'},
679 {"debug", no_argument, NULL, 0},
680 {"help", no_argument, NULL, 'h'},
681 {"no-unlock-indicator", no_argument, NULL, 'u'},
682 {"image", required_argument, NULL, 'i'},
683 {"tiling", no_argument, NULL, 't'},
684 {"ignore-empty-password", no_argument, NULL, 'e'},
685 {"inactivity-timeout", required_argument, NULL, 'I'},
686 {"show-failed-attempts", no_argument, NULL, 'f'},
687 {NULL, no_argument, NULL, 0}
691 err(EXIT_FAILURE, "getpwuid() failed");
692 if ((username = pw->pw_name) == NULL)
693 errx(EXIT_FAILURE, "pw->pw_name is NULL.\n");
695 char *optstring = "hvnbdc:p:ui:teI:f";
696 while ((o = getopt_long(argc, argv, optstring, longopts, &optind)) != -1) {
699 errx(EXIT_SUCCESS, "version " VERSION " © 2010-2012 Michael Stapelberg");
711 if (sscanf(optarg, "%d", &time) != 1 || time < 0)
712 errx(EXIT_FAILURE, "invalid timeout, it must be a positive integer\n");
713 inactivity_timeout = time;
719 /* Skip # if present */
723 if (strlen(arg) != 6 || sscanf(arg, "%06[0-9a-fA-F]", color) != 1)
724 errx(EXIT_FAILURE, "color is invalid, it must be given in 3-byte hexadecimal format: rrggbb\n");
729 unlock_indicator = false;
732 image_path = strdup(optarg);
738 if (!strcmp(optarg, "win")) {
739 curs_choice = CURS_WIN;
740 } else if (!strcmp(optarg, "default")) {
741 curs_choice = CURS_DEFAULT;
743 errx(EXIT_FAILURE, "i3lock: Invalid pointer type given. Expected one of \"win\" or \"default\".\n");
747 ignore_empty_password = true;
750 if (strcmp(longopts[optind].name, "debug") == 0)
754 show_failed_attempts = true;
757 errx(EXIT_FAILURE, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
758 " [-i image.png] [-t] [-e] [-I] [-f]"
763 /* We need (relatively) random numbers for highlighting a random part of
764 * the unlock indicator upon keypresses. */
768 ret = pam_start("i3lock", username, &conv, &pam_handle);
769 if (ret != PAM_SUCCESS)
770 errx(EXIT_FAILURE, "PAM: %s", pam_strerror(pam_handle, ret));
772 /* Using mlock() as non-super-user seems only possible in Linux. Users of other
773 * operating systems should use encrypted swap/no swap (or remove the ifdef and
774 * run i3lock as super-user). */
775 #if defined(__linux__)
776 /* Lock the area where we store the password in memory, we don’t want it to
777 * be swapped to disk. Since Linux 2.6.9, this does not require any
778 * privileges, just enough bytes in the RLIMIT_MEMLOCK limit. */
779 if (mlock(password, sizeof(password)) != 0)
780 err(EXIT_FAILURE, "Could not lock page in memory, check RLIMIT_MEMLOCK");
783 /* Double checking that connection is good and operatable with xcb */
785 if ((conn = xcb_connect(NULL, &screennr)) == NULL ||
786 xcb_connection_has_error(conn))
787 errx(EXIT_FAILURE, "Could not connect to X11, maybe you need to set DISPLAY?");
789 if (xkb_x11_setup_xkb_extension(conn,
790 XKB_X11_MIN_MAJOR_XKB_VERSION,
791 XKB_X11_MIN_MINOR_XKB_VERSION,
796 &xkb_base_error) != 1)
797 errx(EXIT_FAILURE, "Could not setup XKB extension.");
799 static const xcb_xkb_map_part_t required_map_parts =
800 (XCB_XKB_MAP_PART_KEY_TYPES |
801 XCB_XKB_MAP_PART_KEY_SYMS |
802 XCB_XKB_MAP_PART_MODIFIER_MAP |
803 XCB_XKB_MAP_PART_EXPLICIT_COMPONENTS |
804 XCB_XKB_MAP_PART_KEY_ACTIONS |
805 XCB_XKB_MAP_PART_VIRTUAL_MODS |
806 XCB_XKB_MAP_PART_VIRTUAL_MOD_MAP);
808 static const xcb_xkb_event_type_t required_events =
809 (XCB_XKB_EVENT_TYPE_NEW_KEYBOARD_NOTIFY |
810 XCB_XKB_EVENT_TYPE_MAP_NOTIFY |
811 XCB_XKB_EVENT_TYPE_STATE_NOTIFY);
813 xcb_xkb_select_events(
815 xkb_x11_get_core_keyboard_device_id(conn),
823 /* When we cannot initially load the keymap, we better exit */
825 errx(EXIT_FAILURE, "Could not load keymap");
828 xinerama_query_screens();
830 /* if DPMS is enabled, check if the X server really supports it */
832 xcb_dpms_capable_cookie_t dpmsc = xcb_dpms_capable(conn);
833 xcb_dpms_capable_reply_t *dpmsr;
834 if ((dpmsr = xcb_dpms_capable_reply(conn, dpmsc, NULL))) {
835 if (!dpmsr->capable) {
837 fprintf(stderr, "Disabling DPMS, X server not DPMS capable\n");
844 screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
846 last_resolution[0] = screen->width_in_pixels;
847 last_resolution[1] = screen->height_in_pixels;
849 xcb_change_window_attributes(conn, screen->root, XCB_CW_EVENT_MASK,
850 (uint32_t[]){ XCB_EVENT_MASK_STRUCTURE_NOTIFY });
853 /* Create a pixmap to render on, fill it with the background color */
854 img = cairo_image_surface_create_from_png(image_path);
855 /* In case loading failed, we just pretend no -i was specified. */
856 if (cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) {
857 fprintf(stderr, "Could not load image \"%s\": %s\n",
858 image_path, cairo_status_to_string(cairo_surface_status(img)));
863 /* Pixmap on which the image is rendered to (if any) */
864 xcb_pixmap_t bg_pixmap = draw_image(last_resolution);
866 /* open the fullscreen window, already with the correct pixmap in place */
867 win = open_fullscreen_window(conn, screen, color, bg_pixmap);
868 xcb_free_pixmap(conn, bg_pixmap);
871 /* The pid == -1 case is intentionally ignored here:
872 * While the child process is useful for preventing other windows from
873 * popping up while i3lock blocks, it is not critical. */
876 close(xcb_get_file_descriptor(conn));
881 cursor = create_cursor(conn, screen, win, curs_choice);
883 grab_pointer_and_keyboard(conn, screen, cursor);
884 /* Load the keymap again to sync the current modifier state. Since we first
885 * loaded the keymap, there might have been changes, but starting from now,
886 * we should get all key presses/releases due to having grabbed the
892 /* Initialize the libev event loop. */
893 main_loop = EV_DEFAULT;
894 if (main_loop == NULL)
895 errx(EXIT_FAILURE, "Could not initialize libev. Bad LIBEV_FLAGS?\n");
897 struct ev_io *xcb_watcher = calloc(sizeof(struct ev_io), 1);
898 struct ev_check *xcb_check = calloc(sizeof(struct ev_check), 1);
899 struct ev_prepare *xcb_prepare = calloc(sizeof(struct ev_prepare), 1);
901 ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
902 ev_io_start(main_loop, xcb_watcher);
904 ev_check_init(xcb_check, xcb_check_cb);
905 ev_check_start(main_loop, xcb_check);
907 ev_prepare_init(xcb_prepare, xcb_prepare_cb);
908 ev_prepare_start(main_loop, xcb_prepare);
910 /* Invoke the event callback once to catch all the events which were
911 * received up until now. ev will only pick up new events (when the X11
912 * file descriptor becomes readable). */
913 ev_invoke(main_loop, xcb_check, 0);
914 ev_loop(main_loop, 0);