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-compose.h>
29 #include <xkbcommon/xkbcommon-x11.h>
31 #include <cairo/cairo-xcb.h>
36 #include "unlock_indicator.h"
39 #define TSTAMP_N_SECS(n) (n * 1.0)
40 #define TSTAMP_N_MINS(n) (60 * TSTAMP_N_SECS(n))
41 #define START_TIMER(timer_obj, timeout, callback) \
42 timer_obj = start_timer(timer_obj, timeout, callback)
43 #define STOP_TIMER(timer_obj) \
44 timer_obj = stop_timer(timer_obj)
46 typedef void (*ev_callback_t)(EV_P_ ev_timer *w, int revents);
48 /* We need this for libxkbfile */
49 char color[7] = "ffffff";
50 int inactivity_timeout = 30;
51 uint32_t last_resolution[2];
53 static xcb_cursor_t cursor;
54 static pam_handle_t *pam_handle;
55 int input_position = 0;
56 /* Holds the password you enter (in UTF-8). */
57 static char password[512];
58 static bool beep = false;
59 bool debug_mode = false;
60 static bool dpms = false;
61 bool unlock_indicator = true;
62 static bool dont_fork = false;
63 struct ev_loop *main_loop;
64 static struct ev_timer *clear_pam_wrong_timeout;
65 static struct ev_timer *clear_indicator_timeout;
66 static struct ev_timer *dpms_timeout;
67 static struct ev_timer *discard_passwd_timeout;
68 extern unlock_state_t unlock_state;
69 extern pam_state_t pam_state;
70 int failed_attempts = 0;
71 bool show_failed_attempts = false;
73 static struct xkb_state *xkb_state;
74 static struct xkb_context *xkb_context;
75 static struct xkb_keymap *xkb_keymap;
76 static struct xkb_compose_table *xkb_compose_table;
77 static struct xkb_compose_state *xkb_compose_state;
78 static uint8_t xkb_base_event;
79 static uint8_t xkb_base_error;
81 cairo_surface_t *img = NULL;
83 bool ignore_empty_password = false;
84 bool skip_repeated_empty_password = false;
86 /* isutf, u8_dec © 2005 Jeff Bezanson, public domain */
87 #define isutf(c) (((c)&0xC0) != 0x80)
90 * Decrements i to point to the previous unicode glyph
93 void u8_dec(char *s, int *i) {
94 (void)(isutf(s[--(*i)]) || isutf(s[--(*i)]) || isutf(s[--(*i)]) || --(*i));
97 static void turn_monitors_on(void) {
99 dpms_set_mode(conn, XCB_DPMS_DPMS_MODE_ON);
102 static void turn_monitors_off(void) {
104 dpms_set_mode(conn, XCB_DPMS_DPMS_MODE_OFF);
108 * Loads the XKB keymap from the X11 server and feeds it to xkbcommon.
109 * Necessary so that we can properly let xkbcommon track the keyboard state and
110 * translate keypresses to utf-8.
113 static bool load_keymap(void) {
114 if (xkb_context == NULL) {
115 if ((xkb_context = xkb_context_new(0)) == NULL) {
116 fprintf(stderr, "[i3lock] could not create xkbcommon context\n");
121 xkb_keymap_unref(xkb_keymap);
123 int32_t device_id = xkb_x11_get_core_keyboard_device_id(conn);
124 DEBUG("device = %d\n", device_id);
125 if ((xkb_keymap = xkb_x11_keymap_new_from_device(xkb_context, conn, device_id, 0)) == NULL) {
126 fprintf(stderr, "[i3lock] xkb_x11_keymap_new_from_device failed\n");
130 struct xkb_state *new_state =
131 xkb_x11_state_new_from_device(xkb_keymap, conn, device_id);
132 if (new_state == NULL) {
133 fprintf(stderr, "[i3lock] xkb_x11_state_new_from_device failed\n");
137 xkb_state_unref(xkb_state);
138 xkb_state = new_state;
144 * Loads the XKB compose table from the given locale.
147 static bool load_compose_table(const char *locale) {
148 xkb_compose_table_unref(xkb_compose_table);
150 if ((xkb_compose_table = xkb_compose_table_new_from_locale(xkb_context, locale, 0)) == NULL) {
151 fprintf(stderr, "[i3lock] xkb_compose_table_new_from_locale failed\n");
155 struct xkb_compose_state *new_compose_state = xkb_compose_state_new(xkb_compose_table, 0);
156 if (new_compose_state == NULL) {
157 fprintf(stderr, "[i3lock] xkb_compose_state_new failed\n");
161 xkb_compose_state_unref(xkb_compose_state);
162 xkb_compose_state = new_compose_state;
168 * Clears the memory which stored the password to be a bit safer against
172 static void clear_password_memory(void) {
173 /* A volatile pointer to the password buffer to prevent the compiler from
174 * optimizing this out. */
175 volatile char *vpassword = password;
176 for (int c = 0; c < sizeof(password); c++)
177 /* We store a non-random pattern which consists of the (irrelevant)
178 * index plus (!) the value of the beep variable. This prevents the
179 * compiler from optimizing the calls away, since the value of 'beep'
180 * is not known at compile-time. */
181 vpassword[c] = c + (int)beep;
184 ev_timer *start_timer(ev_timer *timer_obj, ev_tstamp timeout, ev_callback_t callback) {
186 ev_timer_stop(main_loop, timer_obj);
187 ev_timer_set(timer_obj, timeout, 0.);
188 ev_timer_start(main_loop, timer_obj);
190 /* When there is no memory, we just don’t have a timeout. We cannot
191 * exit() here, since that would effectively unlock the screen. */
192 timer_obj = calloc(sizeof(struct ev_timer), 1);
194 ev_timer_init(timer_obj, callback, timeout, 0.);
195 ev_timer_start(main_loop, timer_obj);
201 ev_timer *stop_timer(ev_timer *timer_obj) {
203 ev_timer_stop(main_loop, timer_obj);
210 * Resets pam_state to STATE_PAM_IDLE 2 seconds after an unsuccessful
211 * authentication event.
214 static void clear_pam_wrong(EV_P_ ev_timer *w, int revents) {
215 DEBUG("clearing pam wrong\n");
216 pam_state = STATE_PAM_IDLE;
217 unlock_state = STATE_STARTED;
220 /* Now free this timeout. */
221 STOP_TIMER(clear_pam_wrong_timeout);
224 static void clear_indicator_cb(EV_P_ ev_timer *w, int revents) {
226 STOP_TIMER(clear_indicator_timeout);
229 static void clear_input(void) {
231 clear_password_memory();
232 password[input_position] = '\0';
234 /* Hide the unlock indicator after a bit if the password buffer is
236 START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
237 unlock_state = STATE_BACKSPACE_ACTIVE;
239 unlock_state = STATE_KEY_PRESSED;
242 static void turn_off_monitors_cb(EV_P_ ev_timer *w, int revents) {
243 if (input_position == 0)
246 STOP_TIMER(dpms_timeout);
249 static void discard_passwd_cb(EV_P_ ev_timer *w, int revents) {
252 STOP_TIMER(discard_passwd_timeout);
255 static void input_done(void) {
256 STOP_TIMER(clear_pam_wrong_timeout);
257 pam_state = STATE_PAM_VERIFY;
260 if (pam_authenticate(pam_handle, 0) == PAM_SUCCESS) {
261 DEBUG("successfully authenticated\n");
262 clear_password_memory();
263 /* Turn the screen on, as it may have been turned off
264 * on release of the 'enter' key. */
270 fprintf(stderr, "Authentication failure\n");
272 pam_state = STATE_PAM_WRONG;
273 failed_attempts += 1;
277 /* Clear this state after 2 seconds (unless the user enters another
278 * password during that time). */
279 ev_now_update(main_loop);
280 START_TIMER(clear_pam_wrong_timeout, TSTAMP_N_SECS(2), clear_pam_wrong);
282 /* Cancel the clear_indicator_timeout, it would hide the unlock indicator
284 STOP_TIMER(clear_indicator_timeout);
286 /* beep on authentication failure, if enabled */
293 static void redraw_timeout(EV_P_ ev_timer *w, int revents) {
298 static bool skip_without_validation(void) {
299 if (input_position != 0)
302 if (skip_repeated_empty_password || ignore_empty_password)
309 * Handle key presses. Fixes state, then looks up the key symbol for the
310 * given keycode, then looks up the key symbol (as UCS-2), converts it to
311 * UTF-8 and stores it in the password array.
314 static void handle_key_press(xcb_key_press_event_t *event) {
319 bool composed = false;
321 ksym = xkb_state_key_get_one_sym(xkb_state, event->detail);
322 ctrl = xkb_state_mod_name_is_active(xkb_state, "Control", XKB_STATE_MODS_DEPRESSED);
324 /* The buffer will be null-terminated, so n >= 2 for 1 actual character. */
325 memset(buffer, '\0', sizeof(buffer));
327 if (xkb_compose_state && xkb_compose_state_feed(xkb_compose_state, ksym) == XKB_COMPOSE_FEED_ACCEPTED) {
328 switch (xkb_compose_state_get_status(xkb_compose_state)) {
329 case XKB_COMPOSE_NOTHING:
331 case XKB_COMPOSE_COMPOSING:
333 case XKB_COMPOSE_COMPOSED:
334 /* xkb_compose_state_get_utf8 doesn't include the terminating byte in the return value
335 * as xkb_keysym_to_utf8 does. Adding one makes the variable n consistent. */
336 n = xkb_compose_state_get_utf8(xkb_compose_state, buffer, sizeof(buffer)) + 1;
337 ksym = xkb_compose_state_get_one_sym(xkb_compose_state);
340 case XKB_COMPOSE_CANCELLED:
341 xkb_compose_state_reset(xkb_compose_state);
347 n = xkb_keysym_to_utf8(ksym, buffer, sizeof(buffer));
352 case XKB_KEY_KP_Enter:
353 case XKB_KEY_XF86ScreenSaver:
354 if (pam_state == STATE_PAM_WRONG)
357 if (skip_without_validation()) {
361 password[input_position] = '\0';
362 unlock_state = STATE_KEY_PRESSED;
365 skip_repeated_empty_password = true;
368 skip_repeated_empty_password = false;
374 DEBUG("C-u pressed\n");
384 case XKB_KEY_BackSpace:
385 if (input_position == 0)
388 /* decrement input_position to point to the previous glyph */
389 u8_dec(password, &input_position);
390 password[input_position] = '\0';
392 /* Hide the unlock indicator after a bit if the password buffer is
394 START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
395 unlock_state = STATE_BACKSPACE_ACTIVE;
397 unlock_state = STATE_KEY_PRESSED;
401 if ((input_position + 8) >= sizeof(password))
405 /* FIXME: handle all of these? */
406 printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
407 printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
408 printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
409 printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
410 printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
411 printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
412 printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
418 /* store it in the password array as UTF-8 */
419 memcpy(password + input_position, buffer, n - 1);
420 input_position += n - 1;
421 DEBUG("current password = %.*s\n", input_position, password);
423 unlock_state = STATE_KEY_ACTIVE;
425 unlock_state = STATE_KEY_PRESSED;
427 struct ev_timer *timeout = NULL;
428 START_TIMER(timeout, TSTAMP_N_SECS(0.25), redraw_timeout);
429 STOP_TIMER(clear_indicator_timeout);
430 START_TIMER(discard_passwd_timeout, TSTAMP_N_MINS(3), discard_passwd_cb);
434 * A visibility notify event will be received when the visibility (= can the
435 * user view the complete window) changes, so for example when a popup overlays
436 * some area of the i3lock window.
438 * In this case, we raise our window on top so that the popup (or whatever is
439 * hiding us) gets hidden.
442 static void handle_visibility_notify(xcb_connection_t *conn,
443 xcb_visibility_notify_event_t *event) {
444 if (event->state != XCB_VISIBILITY_UNOBSCURED) {
445 uint32_t values[] = {XCB_STACK_MODE_ABOVE};
446 xcb_configure_window(conn, event->window, XCB_CONFIG_WINDOW_STACK_MODE, values);
452 * Called when the keyboard mapping changes. We update our symbols.
454 * We ignore errors — if the new keymap cannot be loaded it’s better if the
455 * screen stays locked and the user intervenes by using killall i3lock.
458 static void process_xkb_event(xcb_generic_event_t *gevent) {
461 uint8_t response_type;
464 xcb_timestamp_t time;
467 xcb_xkb_new_keyboard_notify_event_t new_keyboard_notify;
468 xcb_xkb_map_notify_event_t map_notify;
469 xcb_xkb_state_notify_event_t state_notify;
470 } *event = (union xkb_event *)gevent;
472 DEBUG("process_xkb_event for device %d\n", event->any.deviceID);
474 if (event->any.deviceID != xkb_x11_get_core_keyboard_device_id(conn))
478 * XkbNewKkdNotify and XkbMapNotify together capture all sorts of keymap
479 * updates (e.g. xmodmap, xkbcomp, setxkbmap), with minimal redundent
482 switch (event->any.xkbType) {
483 case XCB_XKB_NEW_KEYBOARD_NOTIFY:
484 if (event->new_keyboard_notify.changed & XCB_XKB_NKN_DETAIL_KEYCODES)
488 case XCB_XKB_MAP_NOTIFY:
492 case XCB_XKB_STATE_NOTIFY:
493 xkb_state_update_mask(xkb_state,
494 event->state_notify.baseMods,
495 event->state_notify.latchedMods,
496 event->state_notify.lockedMods,
497 event->state_notify.baseGroup,
498 event->state_notify.latchedGroup,
499 event->state_notify.lockedGroup);
505 * Called when the properties on the root window change, e.g. when the screen
506 * resolution changes. If so we update the window to cover the whole screen
507 * and also redraw the image, if any.
510 void handle_screen_resize(void) {
511 xcb_get_geometry_cookie_t geomc;
512 xcb_get_geometry_reply_t *geom;
513 geomc = xcb_get_geometry(conn, screen->root);
514 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL)
517 if (last_resolution[0] == geom->width &&
518 last_resolution[1] == geom->height) {
523 last_resolution[0] = geom->width;
524 last_resolution[1] = geom->height;
530 uint32_t mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
531 xcb_configure_window(conn, win, mask, last_resolution);
534 xinerama_query_screens();
539 * Callback function for PAM. We only react on password request callbacks.
542 static int conv_callback(int num_msg, const struct pam_message **msg,
543 struct pam_response **resp, void *appdata_ptr) {
547 /* PAM expects an array of responses, one for each message */
548 if ((*resp = calloc(num_msg, sizeof(struct pam_response))) == NULL) {
553 for (int c = 0; c < num_msg; c++) {
554 if (msg[c]->msg_style != PAM_PROMPT_ECHO_OFF &&
555 msg[c]->msg_style != PAM_PROMPT_ECHO_ON)
558 /* return code is currently not used but should be set to zero */
559 resp[c]->resp_retcode = 0;
560 if ((resp[c]->resp = strdup(password)) == NULL) {
570 * This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
571 * See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
574 static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
575 /* empty, because xcb_prepare_cb and xcb_check_cb are used */
579 * Flush before blocking (and waiting for new events)
582 static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
587 * Instead of polling the X connection socket we leave this to
588 * xcb_poll_for_event() which knows better than we can ever know.
591 static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
592 xcb_generic_event_t *event;
594 if (xcb_connection_has_error(conn))
595 errx(EXIT_FAILURE, "X11 connection broke, did your server terminate?\n");
597 while ((event = xcb_poll_for_event(conn)) != NULL) {
598 if (event->response_type == 0) {
599 xcb_generic_error_t *error = (xcb_generic_error_t *)event;
601 fprintf(stderr, "X11 Error received! sequence 0x%x, error_code = %d\n",
602 error->sequence, error->error_code);
607 /* Strip off the highest bit (set if the event is generated) */
608 int type = (event->response_type & 0x7F);
612 handle_key_press((xcb_key_press_event_t *)event);
615 case XCB_KEY_RELEASE:
616 /* If this was the backspace or escape key we are back at an
617 * empty input, so turn off the screen if DPMS is enabled, but
618 * only do that after some timeout: maybe user mistyped and
619 * will type again right away */
620 START_TIMER(dpms_timeout, TSTAMP_N_SECS(inactivity_timeout),
621 turn_off_monitors_cb);
624 case XCB_VISIBILITY_NOTIFY:
625 handle_visibility_notify(conn, (xcb_visibility_notify_event_t *)event);
630 /* After the first MapNotify, we never fork again. We don’t
631 * expect to get another MapNotify, but better be sure… */
634 /* In the parent process, we exit */
638 ev_loop_fork(EV_DEFAULT);
642 case XCB_CONFIGURE_NOTIFY:
643 handle_screen_resize();
647 if (type == xkb_base_event)
648 process_xkb_event(event);
656 * This function is called from a fork()ed child and will raise the i3lock
657 * window when the window is obscured, even when the main i3lock process is
658 * blocked due to PAM.
661 static void raise_loop(xcb_window_t window) {
662 xcb_connection_t *conn;
663 xcb_generic_event_t *event;
666 if ((conn = xcb_connect(NULL, &screens)) == NULL ||
667 xcb_connection_has_error(conn))
668 errx(EXIT_FAILURE, "Cannot open display\n");
670 /* We need to know about the window being obscured or getting destroyed. */
671 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK,
673 XCB_EVENT_MASK_VISIBILITY_CHANGE |
674 XCB_EVENT_MASK_STRUCTURE_NOTIFY});
677 DEBUG("Watching window 0x%08x\n", window);
678 while ((event = xcb_wait_for_event(conn)) != NULL) {
679 if (event->response_type == 0) {
680 xcb_generic_error_t *error = (xcb_generic_error_t *)event;
681 DEBUG("X11 Error received! sequence 0x%x, error_code = %d\n",
682 error->sequence, error->error_code);
686 /* Strip off the highest bit (set if the event is generated) */
687 int type = (event->response_type & 0x7F);
688 DEBUG("Read event of type %d\n", type);
690 case XCB_VISIBILITY_NOTIFY:
691 handle_visibility_notify(conn, (xcb_visibility_notify_event_t *)event);
693 case XCB_UNMAP_NOTIFY:
694 DEBUG("UnmapNotify for 0x%08x\n", (((xcb_unmap_notify_event_t *)event)->window));
695 if (((xcb_unmap_notify_event_t *)event)->window == window)
698 case XCB_DESTROY_NOTIFY:
699 DEBUG("DestroyNotify for 0x%08x\n", (((xcb_destroy_notify_event_t *)event)->window));
700 if (((xcb_destroy_notify_event_t *)event)->window == window)
704 DEBUG("Unhandled event type %d\n", type);
711 int main(int argc, char *argv[]) {
714 char *image_path = NULL;
716 struct pam_conv conv = {conv_callback, NULL};
717 int curs_choice = CURS_NONE;
720 struct option longopts[] = {
721 {"version", no_argument, NULL, 'v'},
722 {"nofork", no_argument, NULL, 'n'},
723 {"beep", no_argument, NULL, 'b'},
724 {"dpms", no_argument, NULL, 'd'},
725 {"color", required_argument, NULL, 'c'},
726 {"pointer", required_argument, NULL, 'p'},
727 {"debug", no_argument, NULL, 0},
728 {"help", no_argument, NULL, 'h'},
729 {"no-unlock-indicator", no_argument, NULL, 'u'},
730 {"image", required_argument, NULL, 'i'},
731 {"tiling", no_argument, NULL, 't'},
732 {"ignore-empty-password", no_argument, NULL, 'e'},
733 {"inactivity-timeout", required_argument, NULL, 'I'},
734 {"show-failed-attempts", no_argument, NULL, 'f'},
735 {NULL, no_argument, NULL, 0}};
737 if ((pw = getpwuid(getuid())) == NULL)
738 err(EXIT_FAILURE, "getpwuid() failed");
739 if ((username = pw->pw_name) == NULL)
740 errx(EXIT_FAILURE, "pw->pw_name is NULL.\n");
742 char *optstring = "hvnbdc:p:ui:teI:f";
743 while ((o = getopt_long(argc, argv, optstring, longopts, &optind)) != -1) {
746 errx(EXIT_SUCCESS, "version " VERSION " © 2010-2012 Michael Stapelberg");
758 if (sscanf(optarg, "%d", &time) != 1 || time < 0)
759 errx(EXIT_FAILURE, "invalid timeout, it must be a positive integer\n");
760 inactivity_timeout = time;
766 /* Skip # if present */
770 if (strlen(arg) != 6 || sscanf(arg, "%06[0-9a-fA-F]", color) != 1)
771 errx(EXIT_FAILURE, "color is invalid, it must be given in 3-byte hexadecimal format: rrggbb\n");
776 unlock_indicator = false;
779 image_path = strdup(optarg);
785 if (!strcmp(optarg, "win")) {
786 curs_choice = CURS_WIN;
787 } else if (!strcmp(optarg, "default")) {
788 curs_choice = CURS_DEFAULT;
790 errx(EXIT_FAILURE, "i3lock: Invalid pointer type given. Expected one of \"win\" or \"default\".\n");
794 ignore_empty_password = true;
797 if (strcmp(longopts[optind].name, "debug") == 0)
801 show_failed_attempts = true;
804 errx(EXIT_FAILURE, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
805 " [-i image.png] [-t] [-e] [-I] [-f]");
809 /* We need (relatively) random numbers for highlighting a random part of
810 * the unlock indicator upon keypresses. */
814 ret = pam_start("i3lock", username, &conv, &pam_handle);
815 if (ret != PAM_SUCCESS)
816 errx(EXIT_FAILURE, "PAM: %s", pam_strerror(pam_handle, ret));
818 /* Using mlock() as non-super-user seems only possible in Linux. Users of other
819 * operating systems should use encrypted swap/no swap (or remove the ifdef and
820 * run i3lock as super-user). */
821 #if defined(__linux__)
822 /* Lock the area where we store the password in memory, we don’t want it to
823 * be swapped to disk. Since Linux 2.6.9, this does not require any
824 * privileges, just enough bytes in the RLIMIT_MEMLOCK limit. */
825 if (mlock(password, sizeof(password)) != 0)
826 err(EXIT_FAILURE, "Could not lock page in memory, check RLIMIT_MEMLOCK");
829 /* Double checking that connection is good and operatable with xcb */
831 if ((conn = xcb_connect(NULL, &screennr)) == NULL ||
832 xcb_connection_has_error(conn))
833 errx(EXIT_FAILURE, "Could not connect to X11, maybe you need to set DISPLAY?");
835 if (xkb_x11_setup_xkb_extension(conn,
836 XKB_X11_MIN_MAJOR_XKB_VERSION,
837 XKB_X11_MIN_MINOR_XKB_VERSION,
842 &xkb_base_error) != 1)
843 errx(EXIT_FAILURE, "Could not setup XKB extension.");
845 static const xcb_xkb_map_part_t required_map_parts =
846 (XCB_XKB_MAP_PART_KEY_TYPES |
847 XCB_XKB_MAP_PART_KEY_SYMS |
848 XCB_XKB_MAP_PART_MODIFIER_MAP |
849 XCB_XKB_MAP_PART_EXPLICIT_COMPONENTS |
850 XCB_XKB_MAP_PART_KEY_ACTIONS |
851 XCB_XKB_MAP_PART_VIRTUAL_MODS |
852 XCB_XKB_MAP_PART_VIRTUAL_MOD_MAP);
854 static const xcb_xkb_event_type_t required_events =
855 (XCB_XKB_EVENT_TYPE_NEW_KEYBOARD_NOTIFY |
856 XCB_XKB_EVENT_TYPE_MAP_NOTIFY |
857 XCB_XKB_EVENT_TYPE_STATE_NOTIFY);
859 xcb_xkb_select_events(
861 xkb_x11_get_core_keyboard_device_id(conn),
869 /* When we cannot initially load the keymap, we better exit */
871 errx(EXIT_FAILURE, "Could not load keymap");
873 const char *locale = getenv("LC_ALL");
875 locale = getenv("LC_CTYPE");
877 locale = getenv("LANG");
880 fprintf(stderr, "Can't detect your locale, fallback to C\n");
884 load_compose_table(locale);
887 xinerama_query_screens();
889 /* if DPMS is enabled, check if the X server really supports it */
891 xcb_dpms_capable_cookie_t dpmsc = xcb_dpms_capable(conn);
892 xcb_dpms_capable_reply_t *dpmsr;
893 if ((dpmsr = xcb_dpms_capable_reply(conn, dpmsc, NULL))) {
894 if (!dpmsr->capable) {
896 fprintf(stderr, "Disabling DPMS, X server not DPMS capable\n");
903 screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
905 last_resolution[0] = screen->width_in_pixels;
906 last_resolution[1] = screen->height_in_pixels;
908 xcb_change_window_attributes(conn, screen->root, XCB_CW_EVENT_MASK,
909 (uint32_t[]){XCB_EVENT_MASK_STRUCTURE_NOTIFY});
912 /* Create a pixmap to render on, fill it with the background color */
913 img = cairo_image_surface_create_from_png(image_path);
914 /* In case loading failed, we just pretend no -i was specified. */
915 if (cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) {
916 fprintf(stderr, "Could not load image \"%s\": %s\n",
917 image_path, cairo_status_to_string(cairo_surface_status(img)));
922 /* Pixmap on which the image is rendered to (if any) */
923 xcb_pixmap_t bg_pixmap = draw_image(last_resolution);
925 /* open the fullscreen window, already with the correct pixmap in place */
926 win = open_fullscreen_window(conn, screen, color, bg_pixmap);
927 xcb_free_pixmap(conn, bg_pixmap);
930 /* The pid == -1 case is intentionally ignored here:
931 * While the child process is useful for preventing other windows from
932 * popping up while i3lock blocks, it is not critical. */
935 close(xcb_get_file_descriptor(conn));
940 cursor = create_cursor(conn, screen, win, curs_choice);
942 grab_pointer_and_keyboard(conn, screen, cursor);
943 /* Load the keymap again to sync the current modifier state. Since we first
944 * loaded the keymap, there might have been changes, but starting from now,
945 * we should get all key presses/releases due to having grabbed the
951 /* Initialize the libev event loop. */
952 main_loop = EV_DEFAULT;
953 if (main_loop == NULL)
954 errx(EXIT_FAILURE, "Could not initialize libev. Bad LIBEV_FLAGS?\n");
956 struct ev_io *xcb_watcher = calloc(sizeof(struct ev_io), 1);
957 struct ev_check *xcb_check = calloc(sizeof(struct ev_check), 1);
958 struct ev_prepare *xcb_prepare = calloc(sizeof(struct ev_prepare), 1);
960 ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
961 ev_io_start(main_loop, xcb_watcher);
963 ev_check_init(xcb_check, xcb_check_cb);
964 ev_check_start(main_loop, xcb_check);
966 ev_prepare_init(xcb_prepare, xcb_prepare_cb);
967 ev_prepare_start(main_loop, xcb_prepare);
969 /* Invoke the event callback once to catch all the events which were
970 * received up until now. ev will only pick up new events (when the X11
971 * file descriptor becomes readable). */
972 ev_invoke(main_loop, xcb_check, 0);
973 ev_loop(main_loop, 0);