2 * vim:ts=4:sw=4:expandtab
4 * © 2010-2011 Michael Stapelberg
6 * See LICENSE for licensing information
17 #include <xcb/xcb_keysyms.h>
20 #include <security/pam_appl.h>
21 /* FIXME: can we get rid of this header? */
22 #include <X11/keysym.h>
31 #include <cairo/cairo-xcb.h>
34 #include "keysym2ucs.h"
35 #include "ucs2_to_utf8.h"
39 #define BUTTON_RADIUS 90
40 #define BUTTON_SPACE (BUTTON_RADIUS + 5)
41 #define BUTTON_CENTER (BUTTON_RADIUS + 5)
42 #define BUTTON_DIAMETER (5 * BUTTON_SPACE)
44 static char color[7] = "ffffff";
45 static uint32_t last_resolution[2];
46 static xcb_connection_t *conn;
47 static xcb_window_t win;
48 static xcb_visualtype_t *vistype;
49 static xcb_cursor_t cursor;
50 static xcb_key_symbols_t *symbols;
51 static xcb_screen_t *scr;
52 static pam_handle_t *pam_handle;
53 static int input_position = 0;
54 /* holds the password you enter (in UTF-8) */
55 static char password[512];
56 static bool modeswitch_active = false;
57 static bool iso_level3_shift_active = false;
58 static bool iso_level5_shift_active = false;
59 static int modeswitchmask;
60 static int numlockmask;
61 static bool beep = false;
62 static bool debug_mode = false;
63 static bool dpms = false;
64 static bool unlock_indicator = true;
65 static struct ev_loop *main_loop;
66 static struct ev_timer *clear_pam_wrong_timeout;
67 static struct ev_timer *clear_indicator_timeout;
70 STATE_STARTED = 0, /* default state */
71 STATE_KEY_PRESSED = 1, /* key was pressed, show unlock indicator */
72 STATE_KEY_ACTIVE = 2, /* a key was pressed recently, highlight part
73 of the unlock indicator. */
74 STATE_BACKSPACE_ACTIVE = 3 /* backspace was pressed recently, highlight
75 part of the unlock indicator in red. */
79 STATE_PAM_IDLE = 0, /* no PAM interaction at the moment */
80 STATE_PAM_VERIFY = 1, /* currently verifying the password via PAM */
81 STATE_PAM_WRONG = 2 /* the password was wrong */
84 #define DEBUG(fmt, ...) do { \
86 printf("[i3lock-debug] " fmt, ##__VA_ARGS__); \
90 static cairo_surface_t *img = NULL;
91 static bool tile = false;
95 * Draws global image with fill color onto a pixmap with the given
96 * resolution and returns it.
99 static xcb_pixmap_t draw_image(xcb_visualtype_t *vistype, u_int32_t* resolution) {
100 xcb_pixmap_t bg_pixmap = XCB_NONE;
103 bg_pixmap = create_bg_pixmap(conn, scr, resolution, color);
104 /* Initialize cairo */
105 cairo_surface_t *output;
106 output = cairo_xcb_surface_create(conn, bg_pixmap, vistype,
107 resolution[0], resolution[1]);
108 cairo_t *ctx = cairo_create(output);
111 cairo_set_source_surface(ctx, img, 0, 0);
114 /* create a pattern and fill a rectangle as big as the screen */
115 cairo_pattern_t *pattern;
116 pattern = cairo_pattern_create_for_surface(img);
117 cairo_set_source(ctx, pattern);
118 cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
119 cairo_rectangle(ctx, 0, 0, resolution[0], resolution[1]);
121 cairo_pattern_destroy(pattern);
125 if (unlock_state >= STATE_KEY_PRESSED && unlock_indicator) {
126 cairo_pattern_t *outer_pat = NULL;
128 outer_pat = cairo_pattern_create_linear(0, 0, 0, BUTTON_DIAMETER);
130 case STATE_PAM_VERIFY:
131 cairo_pattern_add_color_stop_rgb(outer_pat, 0, 139.0/255, 0, 250.0/255);
132 cairo_pattern_add_color_stop_rgb(outer_pat, 1, 51.0/255, 0, 250.0/255);
134 case STATE_PAM_WRONG:
135 cairo_pattern_add_color_stop_rgb(outer_pat, 0, 255.0/250, 139.0/255, 0);
136 cairo_pattern_add_color_stop_rgb(outer_pat, 1, 125.0/255, 51.0/255, 0);
139 cairo_pattern_add_color_stop_rgb(outer_pat, 0, 139.0/255, 125.0/255, 0);
140 cairo_pattern_add_color_stop_rgb(outer_pat, 1, 51.0/255, 125.0/255, 0);
144 /* Draw a (centered) circle with transparent background. */
145 cairo_set_line_width(ctx, 10.0);
147 (resolution[0] / 2) /* x */,
148 (resolution[1] / 2) /* y */,
149 BUTTON_RADIUS /* radius */,
153 /* Use the appropriate color for the different PAM states
154 * (currently verifying, wrong password, or default) */
156 case STATE_PAM_VERIFY:
157 cairo_set_source_rgba(ctx, 0, 114.0/255, 255.0/255, 0.75);
159 case STATE_PAM_WRONG:
160 cairo_set_source_rgba(ctx, 250.0/255, 0, 0, 0.75);
163 cairo_set_source_rgba(ctx, 0, 0, 0, 0.75);
166 cairo_fill_preserve(ctx);
167 cairo_set_source(ctx, outer_pat);
170 /* Draw an inner seperator line. */
171 cairo_set_source_rgb(ctx, 0, 0, 0);
172 cairo_set_line_width(ctx, 2.0);
174 (resolution[0] / 2) /* x */,
175 (resolution[1] / 2) /* y */,
176 BUTTON_RADIUS - 5 /* radius */,
181 cairo_set_line_width(ctx, 10.0);
183 /* Display a (centered) text of the current PAM state. */
186 case STATE_PAM_VERIFY:
189 case STATE_PAM_WRONG:
197 cairo_text_extents_t extents;
200 cairo_set_source_rgb(ctx, 0, 0, 0);
201 cairo_set_font_size(ctx, 28.0);
203 cairo_text_extents(ctx, text, &extents);
204 x = (resolution[0] / 2.0) - ((extents.width / 2) + extents.x_bearing);
205 y = (resolution[1] / 2.0) - ((extents.height / 2) + extents.y_bearing);
207 cairo_move_to(ctx, x, y);
208 cairo_show_text(ctx, text);
209 cairo_close_path(ctx);
212 /* After the user pressed any valid key or the backspace key, we
213 * highlight a random part of the unlock indicator to confirm this
215 if (unlock_state == STATE_KEY_ACTIVE ||
216 unlock_state == STATE_BACKSPACE_ACTIVE) {
217 cairo_new_sub_path(ctx);
218 double highlight_start = (rand() % (int)(2 * M_PI * 100)) / 100.0;
219 DEBUG("Highlighting part %.2f\n", highlight_start);
220 cairo_arc(ctx, resolution[0] / 2 /* x */, resolution[1] / 2 /* y */,
221 BUTTON_RADIUS /* radius */, highlight_start,
222 highlight_start + (M_PI / 3.0));
223 if (unlock_state == STATE_KEY_ACTIVE) {
224 /* For normal keys, we use a lighter green. */
225 outer_pat = cairo_pattern_create_linear(0, 0, 0, BUTTON_DIAMETER);
226 cairo_pattern_add_color_stop_rgb(outer_pat, 0, 139.0/255, 219.0/255, 0);
227 cairo_pattern_add_color_stop_rgb(outer_pat, 1, 51.0/255, 219.0/255, 0);
229 /* For backspace, we use red. */
230 outer_pat = cairo_pattern_create_linear(0, 0, 0, BUTTON_DIAMETER);
231 cairo_pattern_add_color_stop_rgb(outer_pat, 0, 219.0/255, 139.0/255, 0);
232 cairo_pattern_add_color_stop_rgb(outer_pat, 1, 219.0/255, 51.0/255, 0);
234 cairo_set_source(ctx, outer_pat);
237 /* Draw two little separators for the highlighted part of the
238 * unlock indicator. */
239 cairo_set_source_rgb(ctx, 0, 0, 0);
241 (resolution[0] / 2) /* x */,
242 (resolution[1] / 2) /* y */,
243 BUTTON_RADIUS /* radius */,
244 highlight_start /* start */,
245 highlight_start + (M_PI / 128.0) /* end */);
248 (resolution[0] / 2) /* x */,
249 (resolution[1] / 2) /* y */,
250 BUTTON_RADIUS /* radius */,
251 highlight_start + (M_PI / 3.0) /* start */,
252 (highlight_start + (M_PI / 3.0)) + (M_PI / 128.0) /* end */);
257 cairo_surface_destroy(output);
264 * Calls draw_image on a new pixmap and swaps that with the current pixmap
267 static void redraw_screen() {
268 xcb_pixmap_t bg_pixmap = draw_image(vistype, last_resolution);
269 xcb_change_window_attributes(conn, win, XCB_CW_BACK_PIXMAP, (uint32_t[1]){ bg_pixmap });
270 /* XXX: Possible optimization: Only update the area in the middle of the
271 * screen instead of the whole screen. */
272 xcb_clear_area(conn, 0, win, 0, 0, scr->width_in_pixels, scr->height_in_pixels);
273 xcb_free_pixmap(conn, bg_pixmap);
278 * Resets pam_state to STATE_PAM_IDLE 2 seconds after an unsuccesful
279 * authentication event.
282 static void clear_pam_wrong(EV_P_ ev_timer *w, int revents) {
283 DEBUG("clearing pam wrong\n");
284 pam_state = STATE_PAM_IDLE;
285 unlock_state = STATE_STARTED;
290 * Hides the unlock indicator completely when there is no content in the
294 static void clear_indicator(EV_P_ ev_timer *w, int revents) {
295 if (input_position == 0) {
296 DEBUG("Clear indicator\n");
297 unlock_state = STATE_STARTED;
298 } else unlock_state = STATE_KEY_PRESSED;
303 * (Re-)starts the clear_indicator timeout. Called after pressing backspace or
304 * after an unsuccessful authentication attempt.
307 static void start_clear_indicator_timeout() {
308 if (clear_indicator_timeout) {
309 ev_timer_stop(main_loop, clear_indicator_timeout);
310 ev_timer_set(clear_indicator_timeout, 1.0, 0.);
311 ev_timer_start(main_loop, clear_indicator_timeout);
313 clear_indicator_timeout = calloc(sizeof(struct ev_timer), 1);
314 ev_timer_init(clear_indicator_timeout, clear_indicator, 1.0, 0.);
315 ev_timer_start(main_loop, clear_indicator_timeout);
319 static void input_done() {
320 if (input_position == 0)
323 if (clear_pam_wrong_timeout) {
324 ev_timer_stop(main_loop, clear_pam_wrong_timeout);
325 clear_pam_wrong_timeout = NULL;
328 pam_state = STATE_PAM_VERIFY;
331 if (pam_authenticate(pam_handle, 0) == PAM_SUCCESS) {
332 printf("successfully authenticated\n");
336 fprintf(stderr, "Authentication failure\n");
338 pam_state = STATE_PAM_WRONG;
341 /* Clear this state after 2 seconds (unless the user enters another
342 * password during that time). */
343 ev_now_update(main_loop);
344 clear_pam_wrong_timeout = calloc(sizeof(struct ev_timer), 1);
345 ev_timer_init(clear_pam_wrong_timeout, clear_pam_wrong, 2.0, 0.);
346 ev_timer_start(main_loop, clear_pam_wrong_timeout);
348 /* Cancel the clear_indicator_timeout, it would hide the unlock indicator
350 if (clear_indicator_timeout) {
351 ev_timer_stop(main_loop, clear_indicator_timeout);
352 clear_indicator_timeout = NULL;
355 /* beep on authentication failure, if enabled */
363 * Called when the user releases a key. We need to leave the Mode_switch
364 * state when the user releases the Mode_switch key.
367 static void handle_key_release(xcb_key_release_event_t *event) {
368 DEBUG("releasing key %d, state raw = %d, modeswitch_active = %d, iso_level3_shift_active = %d, iso_level5_shift_active = %d\n",
369 event->detail, event->state, modeswitch_active, iso_level3_shift_active, iso_level5_shift_active);
371 /* We don’t care about the column here and just use the first symbol. Since
372 * we only check for Mode_switch and ISO_Level3_Shift, this *should* work.
373 * Also, if we would use the current column, we would look in the wrong
375 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, 0);
376 if (sym == XK_Mode_switch) {
377 //printf("Mode switch disabled\n");
378 modeswitch_active = false;
379 } else if (sym == XK_ISO_Level3_Shift) {
380 iso_level3_shift_active = false;
381 } else if (sym == XK_ISO_Level5_Shift) {
382 iso_level5_shift_active = false;
384 DEBUG("release done. modeswitch_active = %d, iso_level3_shift_active = %d, iso_level5_shift_active = %d\n",
385 modeswitch_active, iso_level3_shift_active, iso_level5_shift_active);
388 static void redraw_timeout(EV_P_ ev_timer *w, int revents) {
393 * Handle key presses. Fixes state, then looks up the key symbol for the
394 * given keycode, then looks up the key symbol (as UCS-2), converts it to
395 * UTF-8 and stores it in the password array.
398 static void handle_key_press(xcb_key_press_event_t *event) {
399 DEBUG("keypress %d, state raw = %d, modeswitch_active = %d, iso_level3_shift_active = %d\n",
400 event->detail, event->state, modeswitch_active, iso_level3_shift_active);
402 xcb_keysym_t sym0, sym1, sym;
403 /* For each keycode, there is a list of symbols. The list could look like this:
404 * $ xmodmap -pke | grep 'keycode 38'
405 * keycode 38 = a A adiaeresis Adiaeresis o O
406 * In non-X11 terminology, the symbols for the keycode 38 (the key labeled
407 * with "a" on my keyboard) are "a A ä Ä o O".
408 * Another form to display the same information is using xkbcomp:
409 * $ xkbcomp $DISPLAY /tmp/xkb.dump
410 * Then open /tmp/xkb.dump and search for '\<a\>' (in VIM regexp-language):
412 * symbols[Group1]= [ a, A, o, O ],
413 * symbols[Group2]= [ adiaeresis, Adiaeresis ]
415 * So there are two *groups*, one containing 'a A' and one containing 'ä
416 * Ä'. You can use Mode_switch to switch between these groups. You can use
417 * ISO_Level3_Shift to reach the 'o O' part of the first group (it’s the
418 * same group, just an even higher shift level).
420 * So, using the "logical" XKB information, the following lookup will be
423 * Neither Mode_switch nor ISO_Level3_Shift active: group 1, column 0 and 1
424 * Mode_switch active: group 2, column 0 and 1
425 * ISO_Level3_Shift active: group 1, column 2 and 3
427 * Using the column index which xcb_key_press_lookup_keysym uses (and
428 * xmodmap prints out), the following lookup will be performed:
430 * Neither Mode_switch nor ISO_Level3_Shift active: column 0 and 1
431 * Mode_switch active: column 2 and 3
432 * ISO_Level3_Shift active: column 4 and 5
435 if (modeswitch_active)
437 if (iso_level3_shift_active)
439 if (iso_level5_shift_active)
441 sym0 = xcb_key_press_lookup_keysym(symbols, event, base_column);
442 sym1 = xcb_key_press_lookup_keysym(symbols, event, base_column + 1);
445 DEBUG("Mode switch enabled\n");
446 modeswitch_active = true;
448 case XK_ISO_Level3_Shift:
449 DEBUG("ISO_Level3_Shift enabled\n");
450 iso_level3_shift_active = true;
452 case XK_ISO_Level5_Shift:
453 DEBUG("ISO_Level5_Shift enabled\n");
454 iso_level5_shift_active = true;
461 password[input_position] = '\0';
465 if (input_position == 0)
468 /* decrement input_position to point to the previous glyph */
469 u8_dec(password, &input_position);
470 password[input_position] = '\0';
472 /* Clear this state after 2 seconds (unless the user enters another
473 * password during that time). */
474 start_clear_indicator_timeout();
475 unlock_state = STATE_BACKSPACE_ACTIVE;
477 unlock_state = STATE_KEY_PRESSED;
478 //printf("new input position = %d, new password = %s\n", input_position, password);
482 if ((input_position + 8) >= sizeof(password))
485 if ((event->state & numlockmask) && xcb_is_keypad_key(sym1)) {
486 /* this key was a keypad key */
487 if ((event->state & XCB_MOD_MASK_SHIFT))
491 if ((event->state & XCB_MOD_MASK_SHIFT))
497 /* FIXME: handle all of these? */
498 printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
499 printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
500 printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
501 printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
502 printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
503 printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
504 printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
507 if (xcb_is_modifier_key(sym) || xcb_is_cursor_key(sym))
510 DEBUG("resolved to keysym = %c (%d)\n", sym, sym);
512 /* convert the keysym to UCS */
513 uint16_t ucs = keysym2ucs(sym);
514 if ((int16_t)ucs == -1) {
515 fprintf(stderr, "Keysym could not be converted to UCS, skipping\n");
519 /* store the UCS in a string to convert it */
520 uint8_t inp[3] = {(ucs & 0xFF00) >> 8, (ucs & 0xFF), 0};
521 DEBUG("input part = %s\n", inp);
523 /* store it in the password array as UTF-8 */
524 input_position += convert_ucs_to_utf8((char*)inp, password + input_position);
525 password[input_position] = '\0';
526 DEBUG("current password = %s\n", password);
528 unlock_state = STATE_KEY_ACTIVE;
530 unlock_state = STATE_KEY_PRESSED;
532 struct ev_timer *timeout = calloc(sizeof(struct ev_timer), 1);
533 ev_timer_init(timeout, redraw_timeout, 0.25, 0.);
534 ev_timer_start(main_loop, timeout);
536 if (clear_indicator_timeout) {
537 ev_timer_stop(main_loop, clear_indicator_timeout);
538 clear_indicator_timeout = NULL;
543 * A visibility notify event will be received when the visibility (= can the
544 * user view the complete window) changes, so for example when a popup overlays
545 * some area of the i3lock window.
547 * In this case, we raise our window on top so that the popup (or whatever is
548 * hiding us) gets hidden.
551 static void handle_visibility_notify(xcb_visibility_notify_event_t *event) {
552 if (event->state != XCB_VISIBILITY_UNOBSCURED) {
553 uint32_t values[] = { XCB_STACK_MODE_ABOVE };
554 xcb_configure_window(conn, event->window, XCB_CONFIG_WINDOW_STACK_MODE, values);
560 * Called when the keyboard mapping changes. We update our symbols.
563 static void handle_mapping_notify(xcb_mapping_notify_event_t *event) {
564 xcb_refresh_keyboard_mapping(symbols, event);
566 modeswitchmask = get_mod_mask(conn, symbols, XK_Mode_switch);
567 numlockmask = get_mod_mask(conn, symbols, XK_Num_Lock);
571 * Called when the properties on the root window change, e.g. when the screen
572 * resolution changes. If so we update the window to cover the whole screen
573 * and also redraw the image, if any.
576 void handle_screen_resize(xcb_visualtype_t *vistype, xcb_window_t win, uint32_t* last_resolution) {
577 xcb_get_geometry_cookie_t geomc;
578 xcb_get_geometry_reply_t *geom;
579 geomc = xcb_get_geometry(conn, scr->root);
580 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL) {
584 if (last_resolution[0] == geom->width && last_resolution[1] == geom->height)
587 last_resolution[0] = geom->width;
588 last_resolution[1] = geom->height;
592 xcb_pixmap_t bg_pixmap = draw_image(vistype, last_resolution);
593 xcb_change_window_attributes(conn, win, XCB_CW_BACK_PIXMAP, (uint32_t[1]){ bg_pixmap });
594 xcb_free_pixmap(conn, bg_pixmap);
598 uint32_t mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
599 xcb_configure_window(conn, win, mask, last_resolution);
604 * Callback function for PAM. We only react on password request callbacks.
607 static int conv_callback(int num_msg, const struct pam_message **msg,
608 struct pam_response **resp, void *appdata_ptr)
613 /* PAM expects an array of responses, one for each message */
614 if ((*resp = calloc(num_msg, sizeof(struct pam_message))) == NULL) {
619 for (int c = 0; c < num_msg; c++) {
620 if (msg[c]->msg_style != PAM_PROMPT_ECHO_OFF &&
621 msg[c]->msg_style != PAM_PROMPT_ECHO_ON)
624 /* return code is currently not used but should be set to zero */
625 resp[c]->resp_retcode = 0;
626 if ((resp[c]->resp = strdup(password)) == NULL) {
636 * This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
637 * See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
640 static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
641 /* empty, because xcb_prepare_cb and xcb_check_cb are used */
645 * Flush before blocking (and waiting for new events)
648 static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
653 * Instead of polling the X connection socket we leave this to
654 * xcb_poll_for_event() which knows better than we can ever know.
657 static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
658 xcb_generic_event_t *event;
660 while ((event = xcb_poll_for_event(conn)) != NULL) {
661 if (event->response_type == 0) {
662 xcb_generic_error_t *error = (xcb_generic_error_t*)event;
663 fprintf(stderr, "X11 Error received! sequence 0x%x, error_code = %d\n",
664 error->sequence, error->error_code);
669 /* Strip off the highest bit (set if the event is generated) */
670 int type = (event->response_type & 0x7F);
672 if (type == XCB_KEY_PRESS) {
673 handle_key_press((xcb_key_press_event_t*)event);
677 if (type == XCB_KEY_RELEASE) {
678 handle_key_release((xcb_key_release_event_t*)event);
680 /* If this was the backspace or escape key we are back at an
681 * empty input, so turn off the screen if DPMS is enabled */
682 if (dpms && input_position == 0)
683 dpms_turn_off_screen(conn);
688 if (type == XCB_VISIBILITY_NOTIFY) {
689 handle_visibility_notify((xcb_visibility_notify_event_t*)event);
693 if (type == XCB_MAPPING_NOTIFY) {
694 handle_mapping_notify((xcb_mapping_notify_event_t*)event);
698 if (type == XCB_CONFIGURE_NOTIFY) {
699 handle_screen_resize(vistype, win, last_resolution);
703 printf("WARNING: unhandled event of type %d\n", type);
709 int main(int argc, char *argv[]) {
710 bool dont_fork = false;
713 char *image_path = NULL;
716 struct pam_conv conv = {conv_callback, NULL};
718 int curs_choice = CURS_NONE;
721 struct option longopts[] = {
722 {"version", no_argument, NULL, 'v'},
723 {"nofork", no_argument, NULL, 'n'},
724 {"beep", no_argument, NULL, 'b'},
725 {"dpms", no_argument, NULL, 'd'},
726 {"color", required_argument, NULL, 'c'},
727 {"pointer", required_argument, NULL , 'p'},
728 {"debug", no_argument, NULL, 0},
729 {"help", no_argument, NULL, 'h'},
730 {"no-unlock-indicator", no_argument, NULL, 'u'},
732 {"image", required_argument, NULL, 'i'},
733 {"tiling", no_argument, NULL, 't'},
735 {NULL, no_argument, NULL, 0}
738 if ((username = getenv("USER")) == NULL)
739 errx(1, "USER environment variable not set, please set it.\n");
741 while ((o = getopt_long(argc, argv, "hvnbdc:p:u"
745 , longopts, &optind)) != -1) {
748 errx(EXIT_SUCCESS, "version " VERSION " © 2010-2011 Michael Stapelberg");
761 /* Skip # if present */
765 if (strlen(arg) != 6 || sscanf(arg, "%06[0-9a-fA-F]", color) != 1)
766 errx(1, "color is invalid, color must be given in 6-byte format: rrggbb\n");
771 unlock_indicator = false;
775 image_path = strdup(optarg);
782 if (!strcmp(optarg, "win")) {
783 curs_choice = CURS_WIN;
784 } else if (!strcmp(optarg, "default")) {
785 curs_choice = CURS_DEFAULT;
787 errx(1, "i3lock: Invalid pointer type given. Expected one of \"win\" or \"default\".\n");
791 if (strcmp(longopts[optind].name, "debug") == 0)
795 errx(1, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
797 " [-i image.png] [-t]"
799 " (compiled with NOLIBCAIRO)"
805 /* We need (relatively) random numbers for highlighting a random part of
806 * the unlock indicator upon keypresses. */
810 ret = pam_start("i3lock", username, &conv, &pam_handle);
811 if (ret != PAM_SUCCESS)
812 errx(EXIT_FAILURE, "PAM: %s\n", pam_strerror(pam_handle, ret));
814 /* Initialize connection to X11 */
815 if ((conn = xcb_connect(NULL, &screen)) == NULL ||
816 xcb_connection_has_error(conn))
817 errx(EXIT_FAILURE, "Could not connect to X11, maybe you need to set DISPLAY?");
820 /* In the parent process, we exit */
825 /* if DPMS is enabled, check if the X server really supports it */
827 xcb_dpms_capable_cookie_t dpmsc = xcb_dpms_capable(conn);
828 xcb_dpms_capable_reply_t *dpmsr;
829 if ((dpmsr = xcb_dpms_capable_reply(conn, dpmsc, NULL)) && !dpmsr->capable) {
830 fprintf(stderr, "Disabling DPMS, X server not DPMS capable\n");
835 scr = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
836 vistype = get_root_visual_type(scr);
838 last_resolution[0] = scr->width_in_pixels;
839 last_resolution[1] = scr->height_in_pixels;
844 /* Create a pixmap to render on, fill it with the background color */
845 img = cairo_image_surface_create_from_png(image_path);
849 /* Pixmap on which the image is rendered to (if any) */
850 xcb_pixmap_t bg_pixmap = draw_image(vistype, last_resolution);
852 /* open the fullscreen window, already with the correct pixmap in place */
853 win = open_fullscreen_window(conn, scr, color, bg_pixmap);
854 xcb_free_pixmap(conn, bg_pixmap);
856 cursor = create_cursor(conn, scr, win, curs_choice);
858 grab_pointer_and_keyboard(conn, scr, cursor);
860 symbols = xcb_key_symbols_alloc(conn);
861 modeswitchmask = get_mod_mask(conn, symbols, XK_Mode_switch);
862 numlockmask = get_mod_mask(conn, symbols, XK_Num_Lock);
865 dpms_turn_off_screen(conn);
867 /* Initialize the libev event loop. */
868 main_loop = EV_DEFAULT;
869 if (main_loop == NULL)
870 errx(EXIT_FAILURE, "Could not initialize libev. Bad LIBEV_FLAGS?\n");
872 struct ev_io *xcb_watcher = calloc(sizeof(struct ev_io), 1);
873 struct ev_check *xcb_check = calloc(sizeof(struct ev_check), 1);
874 struct ev_prepare *xcb_prepare = calloc(sizeof(struct ev_prepare), 1);
876 ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
877 ev_io_start(main_loop, xcb_watcher);
879 ev_check_init(xcb_check, xcb_check_cb);
880 ev_check_start(main_loop, xcb_check);
882 ev_prepare_init(xcb_prepare, xcb_prepare_cb);
883 ev_prepare_start(main_loop, xcb_prepare);
886 ev_loop(main_loop, 0);