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. */
267 /* PAM credentials should be refreshed, this will for example update any kerberos tickets.
268 * Related to credentials pam_end() needs to be called to cleanup any temporary
269 * credentials like kerberos /tmp/krb5cc_pam_* files which may of been left behind if the
270 * refresh of the credentials failed. */
271 pam_setcred(pam_handle, PAM_REFRESH_CRED);
272 pam_end(pam_handle, PAM_SUCCESS);
278 fprintf(stderr, "Authentication failure\n");
280 pam_state = STATE_PAM_WRONG;
281 failed_attempts += 1;
285 /* Clear this state after 2 seconds (unless the user enters another
286 * password during that time). */
287 ev_now_update(main_loop);
288 START_TIMER(clear_pam_wrong_timeout, TSTAMP_N_SECS(2), clear_pam_wrong);
290 /* Cancel the clear_indicator_timeout, it would hide the unlock indicator
292 STOP_TIMER(clear_indicator_timeout);
294 /* beep on authentication failure, if enabled */
301 static void redraw_timeout(EV_P_ ev_timer *w, int revents) {
306 static bool skip_without_validation(void) {
307 if (input_position != 0)
310 if (skip_repeated_empty_password || ignore_empty_password)
317 * Handle key presses. Fixes state, then looks up the key symbol for the
318 * given keycode, then looks up the key symbol (as UCS-2), converts it to
319 * UTF-8 and stores it in the password array.
322 static void handle_key_press(xcb_key_press_event_t *event) {
327 bool composed = false;
329 ksym = xkb_state_key_get_one_sym(xkb_state, event->detail);
330 ctrl = xkb_state_mod_name_is_active(xkb_state, "Control", XKB_STATE_MODS_DEPRESSED);
332 /* The buffer will be null-terminated, so n >= 2 for 1 actual character. */
333 memset(buffer, '\0', sizeof(buffer));
335 if (xkb_compose_state && xkb_compose_state_feed(xkb_compose_state, ksym) == XKB_COMPOSE_FEED_ACCEPTED) {
336 switch (xkb_compose_state_get_status(xkb_compose_state)) {
337 case XKB_COMPOSE_NOTHING:
339 case XKB_COMPOSE_COMPOSING:
341 case XKB_COMPOSE_COMPOSED:
342 /* xkb_compose_state_get_utf8 doesn't include the terminating byte in the return value
343 * as xkb_keysym_to_utf8 does. Adding one makes the variable n consistent. */
344 n = xkb_compose_state_get_utf8(xkb_compose_state, buffer, sizeof(buffer)) + 1;
345 ksym = xkb_compose_state_get_one_sym(xkb_compose_state);
348 case XKB_COMPOSE_CANCELLED:
349 xkb_compose_state_reset(xkb_compose_state);
355 n = xkb_keysym_to_utf8(ksym, buffer, sizeof(buffer));
360 case XKB_KEY_KP_Enter:
361 case XKB_KEY_XF86ScreenSaver:
362 if (pam_state == STATE_PAM_WRONG)
365 if (skip_without_validation()) {
369 password[input_position] = '\0';
370 unlock_state = STATE_KEY_PRESSED;
373 skip_repeated_empty_password = true;
376 skip_repeated_empty_password = false;
382 DEBUG("C-u pressed\n");
392 case XKB_KEY_BackSpace:
393 if (input_position == 0)
396 /* decrement input_position to point to the previous glyph */
397 u8_dec(password, &input_position);
398 password[input_position] = '\0';
400 /* Hide the unlock indicator after a bit if the password buffer is
402 START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
403 unlock_state = STATE_BACKSPACE_ACTIVE;
405 unlock_state = STATE_KEY_PRESSED;
409 if ((input_position + 8) >= sizeof(password))
413 /* FIXME: handle all of these? */
414 printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
415 printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
416 printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
417 printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
418 printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
419 printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
420 printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
426 /* store it in the password array as UTF-8 */
427 memcpy(password + input_position, buffer, n - 1);
428 input_position += n - 1;
429 DEBUG("current password = %.*s\n", input_position, password);
431 unlock_state = STATE_KEY_ACTIVE;
433 unlock_state = STATE_KEY_PRESSED;
435 struct ev_timer *timeout = NULL;
436 START_TIMER(timeout, TSTAMP_N_SECS(0.25), redraw_timeout);
437 STOP_TIMER(clear_indicator_timeout);
438 START_TIMER(discard_passwd_timeout, TSTAMP_N_MINS(3), discard_passwd_cb);
442 * A visibility notify event will be received when the visibility (= can the
443 * user view the complete window) changes, so for example when a popup overlays
444 * some area of the i3lock window.
446 * In this case, we raise our window on top so that the popup (or whatever is
447 * hiding us) gets hidden.
450 static void handle_visibility_notify(xcb_connection_t *conn,
451 xcb_visibility_notify_event_t *event) {
452 if (event->state != XCB_VISIBILITY_UNOBSCURED) {
453 uint32_t values[] = {XCB_STACK_MODE_ABOVE};
454 xcb_configure_window(conn, event->window, XCB_CONFIG_WINDOW_STACK_MODE, values);
460 * Called when the keyboard mapping changes. We update our symbols.
462 * We ignore errors — if the new keymap cannot be loaded it’s better if the
463 * screen stays locked and the user intervenes by using killall i3lock.
466 static void process_xkb_event(xcb_generic_event_t *gevent) {
469 uint8_t response_type;
472 xcb_timestamp_t time;
475 xcb_xkb_new_keyboard_notify_event_t new_keyboard_notify;
476 xcb_xkb_map_notify_event_t map_notify;
477 xcb_xkb_state_notify_event_t state_notify;
478 } *event = (union xkb_event *)gevent;
480 DEBUG("process_xkb_event for device %d\n", event->any.deviceID);
482 if (event->any.deviceID != xkb_x11_get_core_keyboard_device_id(conn))
486 * XkbNewKkdNotify and XkbMapNotify together capture all sorts of keymap
487 * updates (e.g. xmodmap, xkbcomp, setxkbmap), with minimal redundent
490 switch (event->any.xkbType) {
491 case XCB_XKB_NEW_KEYBOARD_NOTIFY:
492 if (event->new_keyboard_notify.changed & XCB_XKB_NKN_DETAIL_KEYCODES)
496 case XCB_XKB_MAP_NOTIFY:
500 case XCB_XKB_STATE_NOTIFY:
501 xkb_state_update_mask(xkb_state,
502 event->state_notify.baseMods,
503 event->state_notify.latchedMods,
504 event->state_notify.lockedMods,
505 event->state_notify.baseGroup,
506 event->state_notify.latchedGroup,
507 event->state_notify.lockedGroup);
513 * Called when the properties on the root window change, e.g. when the screen
514 * resolution changes. If so we update the window to cover the whole screen
515 * and also redraw the image, if any.
518 void handle_screen_resize(void) {
519 xcb_get_geometry_cookie_t geomc;
520 xcb_get_geometry_reply_t *geom;
521 geomc = xcb_get_geometry(conn, screen->root);
522 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL)
525 if (last_resolution[0] == geom->width &&
526 last_resolution[1] == geom->height) {
531 last_resolution[0] = geom->width;
532 last_resolution[1] = geom->height;
538 uint32_t mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
539 xcb_configure_window(conn, win, mask, last_resolution);
542 xinerama_query_screens();
547 * Callback function for PAM. We only react on password request callbacks.
550 static int conv_callback(int num_msg, const struct pam_message **msg,
551 struct pam_response **resp, void *appdata_ptr) {
555 /* PAM expects an array of responses, one for each message */
556 if ((*resp = calloc(num_msg, sizeof(struct pam_response))) == NULL) {
561 for (int c = 0; c < num_msg; c++) {
562 if (msg[c]->msg_style != PAM_PROMPT_ECHO_OFF &&
563 msg[c]->msg_style != PAM_PROMPT_ECHO_ON)
566 /* return code is currently not used but should be set to zero */
567 resp[c]->resp_retcode = 0;
568 if ((resp[c]->resp = strdup(password)) == NULL) {
578 * This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
579 * See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
582 static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
583 /* empty, because xcb_prepare_cb and xcb_check_cb are used */
587 * Flush before blocking (and waiting for new events)
590 static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
595 * Instead of polling the X connection socket we leave this to
596 * xcb_poll_for_event() which knows better than we can ever know.
599 static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
600 xcb_generic_event_t *event;
602 if (xcb_connection_has_error(conn))
603 errx(EXIT_FAILURE, "X11 connection broke, did your server terminate?\n");
605 while ((event = xcb_poll_for_event(conn)) != NULL) {
606 if (event->response_type == 0) {
607 xcb_generic_error_t *error = (xcb_generic_error_t *)event;
609 fprintf(stderr, "X11 Error received! sequence 0x%x, error_code = %d\n",
610 error->sequence, error->error_code);
615 /* Strip off the highest bit (set if the event is generated) */
616 int type = (event->response_type & 0x7F);
620 handle_key_press((xcb_key_press_event_t *)event);
623 case XCB_KEY_RELEASE:
624 /* If this was the backspace or escape key we are back at an
625 * empty input, so turn off the screen if DPMS is enabled, but
626 * only do that after some timeout: maybe user mistyped and
627 * will type again right away */
628 START_TIMER(dpms_timeout, TSTAMP_N_SECS(inactivity_timeout),
629 turn_off_monitors_cb);
632 case XCB_VISIBILITY_NOTIFY:
633 handle_visibility_notify(conn, (xcb_visibility_notify_event_t *)event);
638 /* After the first MapNotify, we never fork again. We don’t
639 * expect to get another MapNotify, but better be sure… */
642 /* In the parent process, we exit */
646 ev_loop_fork(EV_DEFAULT);
650 case XCB_CONFIGURE_NOTIFY:
651 handle_screen_resize();
655 if (type == xkb_base_event)
656 process_xkb_event(event);
664 * This function is called from a fork()ed child and will raise the i3lock
665 * window when the window is obscured, even when the main i3lock process is
666 * blocked due to PAM.
669 static void raise_loop(xcb_window_t window) {
670 xcb_connection_t *conn;
671 xcb_generic_event_t *event;
674 if ((conn = xcb_connect(NULL, &screens)) == NULL ||
675 xcb_connection_has_error(conn))
676 errx(EXIT_FAILURE, "Cannot open display\n");
678 /* We need to know about the window being obscured or getting destroyed. */
679 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK,
681 XCB_EVENT_MASK_VISIBILITY_CHANGE |
682 XCB_EVENT_MASK_STRUCTURE_NOTIFY});
685 DEBUG("Watching window 0x%08x\n", window);
686 while ((event = xcb_wait_for_event(conn)) != NULL) {
687 if (event->response_type == 0) {
688 xcb_generic_error_t *error = (xcb_generic_error_t *)event;
689 DEBUG("X11 Error received! sequence 0x%x, error_code = %d\n",
690 error->sequence, error->error_code);
694 /* Strip off the highest bit (set if the event is generated) */
695 int type = (event->response_type & 0x7F);
696 DEBUG("Read event of type %d\n", type);
698 case XCB_VISIBILITY_NOTIFY:
699 handle_visibility_notify(conn, (xcb_visibility_notify_event_t *)event);
701 case XCB_UNMAP_NOTIFY:
702 DEBUG("UnmapNotify for 0x%08x\n", (((xcb_unmap_notify_event_t *)event)->window));
703 if (((xcb_unmap_notify_event_t *)event)->window == window)
706 case XCB_DESTROY_NOTIFY:
707 DEBUG("DestroyNotify for 0x%08x\n", (((xcb_destroy_notify_event_t *)event)->window));
708 if (((xcb_destroy_notify_event_t *)event)->window == window)
712 DEBUG("Unhandled event type %d\n", type);
719 int main(int argc, char *argv[]) {
722 char *image_path = NULL;
724 struct pam_conv conv = {conv_callback, NULL};
725 int curs_choice = CURS_NONE;
728 struct option longopts[] = {
729 {"version", no_argument, NULL, 'v'},
730 {"nofork", no_argument, NULL, 'n'},
731 {"beep", no_argument, NULL, 'b'},
732 {"dpms", no_argument, NULL, 'd'},
733 {"color", required_argument, NULL, 'c'},
734 {"pointer", required_argument, NULL, 'p'},
735 {"debug", no_argument, NULL, 0},
736 {"help", no_argument, NULL, 'h'},
737 {"no-unlock-indicator", no_argument, NULL, 'u'},
738 {"image", required_argument, NULL, 'i'},
739 {"tiling", no_argument, NULL, 't'},
740 {"ignore-empty-password", no_argument, NULL, 'e'},
741 {"inactivity-timeout", required_argument, NULL, 'I'},
742 {"show-failed-attempts", no_argument, NULL, 'f'},
743 {NULL, no_argument, NULL, 0}};
745 if ((pw = getpwuid(getuid())) == NULL)
746 err(EXIT_FAILURE, "getpwuid() failed");
747 if ((username = pw->pw_name) == NULL)
748 errx(EXIT_FAILURE, "pw->pw_name is NULL.\n");
750 char *optstring = "hvnbdc:p:ui:teI:f";
751 while ((o = getopt_long(argc, argv, optstring, longopts, &optind)) != -1) {
754 errx(EXIT_SUCCESS, "version " VERSION " © 2010-2012 Michael Stapelberg");
766 if (sscanf(optarg, "%d", &time) != 1 || time < 0)
767 errx(EXIT_FAILURE, "invalid timeout, it must be a positive integer\n");
768 inactivity_timeout = time;
774 /* Skip # if present */
778 if (strlen(arg) != 6 || sscanf(arg, "%06[0-9a-fA-F]", color) != 1)
779 errx(EXIT_FAILURE, "color is invalid, it must be given in 3-byte hexadecimal format: rrggbb\n");
784 unlock_indicator = false;
787 image_path = strdup(optarg);
793 if (!strcmp(optarg, "win")) {
794 curs_choice = CURS_WIN;
795 } else if (!strcmp(optarg, "default")) {
796 curs_choice = CURS_DEFAULT;
798 errx(EXIT_FAILURE, "i3lock: Invalid pointer type given. Expected one of \"win\" or \"default\".\n");
802 ignore_empty_password = true;
805 if (strcmp(longopts[optind].name, "debug") == 0)
809 show_failed_attempts = true;
812 errx(EXIT_FAILURE, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
813 " [-i image.png] [-t] [-e] [-I] [-f]");
817 /* We need (relatively) random numbers for highlighting a random part of
818 * the unlock indicator upon keypresses. */
822 ret = pam_start("i3lock", username, &conv, &pam_handle);
823 if (ret != PAM_SUCCESS)
824 errx(EXIT_FAILURE, "PAM: %s", pam_strerror(pam_handle, ret));
826 /* Using mlock() as non-super-user seems only possible in Linux. Users of other
827 * operating systems should use encrypted swap/no swap (or remove the ifdef and
828 * run i3lock as super-user). */
829 #if defined(__linux__)
830 /* Lock the area where we store the password in memory, we don’t want it to
831 * be swapped to disk. Since Linux 2.6.9, this does not require any
832 * privileges, just enough bytes in the RLIMIT_MEMLOCK limit. */
833 if (mlock(password, sizeof(password)) != 0)
834 err(EXIT_FAILURE, "Could not lock page in memory, check RLIMIT_MEMLOCK");
837 /* Double checking that connection is good and operatable with xcb */
839 if ((conn = xcb_connect(NULL, &screennr)) == NULL ||
840 xcb_connection_has_error(conn))
841 errx(EXIT_FAILURE, "Could not connect to X11, maybe you need to set DISPLAY?");
843 if (xkb_x11_setup_xkb_extension(conn,
844 XKB_X11_MIN_MAJOR_XKB_VERSION,
845 XKB_X11_MIN_MINOR_XKB_VERSION,
850 &xkb_base_error) != 1)
851 errx(EXIT_FAILURE, "Could not setup XKB extension.");
853 static const xcb_xkb_map_part_t required_map_parts =
854 (XCB_XKB_MAP_PART_KEY_TYPES |
855 XCB_XKB_MAP_PART_KEY_SYMS |
856 XCB_XKB_MAP_PART_MODIFIER_MAP |
857 XCB_XKB_MAP_PART_EXPLICIT_COMPONENTS |
858 XCB_XKB_MAP_PART_KEY_ACTIONS |
859 XCB_XKB_MAP_PART_VIRTUAL_MODS |
860 XCB_XKB_MAP_PART_VIRTUAL_MOD_MAP);
862 static const xcb_xkb_event_type_t required_events =
863 (XCB_XKB_EVENT_TYPE_NEW_KEYBOARD_NOTIFY |
864 XCB_XKB_EVENT_TYPE_MAP_NOTIFY |
865 XCB_XKB_EVENT_TYPE_STATE_NOTIFY);
867 xcb_xkb_select_events(
869 xkb_x11_get_core_keyboard_device_id(conn),
877 /* When we cannot initially load the keymap, we better exit */
879 errx(EXIT_FAILURE, "Could not load keymap");
881 const char *locale = getenv("LC_ALL");
883 locale = getenv("LC_CTYPE");
885 locale = getenv("LANG");
888 fprintf(stderr, "Can't detect your locale, fallback to C\n");
892 load_compose_table(locale);
895 xinerama_query_screens();
897 /* if DPMS is enabled, check if the X server really supports it */
899 xcb_dpms_capable_cookie_t dpmsc = xcb_dpms_capable(conn);
900 xcb_dpms_capable_reply_t *dpmsr;
901 if ((dpmsr = xcb_dpms_capable_reply(conn, dpmsc, NULL))) {
902 if (!dpmsr->capable) {
904 fprintf(stderr, "Disabling DPMS, X server not DPMS capable\n");
911 screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
913 last_resolution[0] = screen->width_in_pixels;
914 last_resolution[1] = screen->height_in_pixels;
916 xcb_change_window_attributes(conn, screen->root, XCB_CW_EVENT_MASK,
917 (uint32_t[]){XCB_EVENT_MASK_STRUCTURE_NOTIFY});
920 /* Create a pixmap to render on, fill it with the background color */
921 img = cairo_image_surface_create_from_png(image_path);
922 /* In case loading failed, we just pretend no -i was specified. */
923 if (cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) {
924 fprintf(stderr, "Could not load image \"%s\": %s\n",
925 image_path, cairo_status_to_string(cairo_surface_status(img)));
930 /* Pixmap on which the image is rendered to (if any) */
931 xcb_pixmap_t bg_pixmap = draw_image(last_resolution);
933 /* open the fullscreen window, already with the correct pixmap in place */
934 win = open_fullscreen_window(conn, screen, color, bg_pixmap);
935 xcb_free_pixmap(conn, bg_pixmap);
938 /* The pid == -1 case is intentionally ignored here:
939 * While the child process is useful for preventing other windows from
940 * popping up while i3lock blocks, it is not critical. */
943 close(xcb_get_file_descriptor(conn));
948 cursor = create_cursor(conn, screen, win, curs_choice);
950 grab_pointer_and_keyboard(conn, screen, cursor);
951 /* Load the keymap again to sync the current modifier state. Since we first
952 * loaded the keymap, there might have been changes, but starting from now,
953 * we should get all key presses/releases due to having grabbed the
959 /* Initialize the libev event loop. */
960 main_loop = EV_DEFAULT;
961 if (main_loop == NULL)
962 errx(EXIT_FAILURE, "Could not initialize libev. Bad LIBEV_FLAGS?\n");
964 struct ev_io *xcb_watcher = calloc(sizeof(struct ev_io), 1);
965 struct ev_check *xcb_check = calloc(sizeof(struct ev_check), 1);
966 struct ev_prepare *xcb_prepare = calloc(sizeof(struct ev_prepare), 1);
968 ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
969 ev_io_start(main_loop, xcb_watcher);
971 ev_check_init(xcb_check, xcb_check_cb);
972 ev_check_start(main_loop, xcb_check);
974 ev_prepare_init(xcb_prepare, xcb_prepare_cb);
975 ev_prepare_start(main_loop, xcb_prepare);
977 /* Invoke the event callback once to catch all the events which were
978 * received up until now. ev will only pick up new events (when the X11
979 * file descriptor becomes readable). */
980 ev_invoke(main_loop, xcb_check, 0);
981 ev_loop(main_loop, 0);