#include <X11/keysym.h>
#include <getopt.h>
#include <string.h>
+#include <math.h>
+#include <ev.h>
+
#ifndef NOLIBCAIRO
#include <cairo.h>
#include "xcb.h"
#include "cursors.h"
+#define BUTTON_RADIUS 90
+#define BUTTON_SPACE (BUTTON_RADIUS + 5)
+#define BUTTON_CENTER (BUTTON_RADIUS + 5)
+#define BUTTON_DIAMETER (5 * BUTTON_SPACE)
+
+static char color[7] = "ffffff";
+static uint32_t last_resolution[2];
static xcb_connection_t *conn;
+static xcb_window_t win;
+static xcb_visualtype_t *vistype;
static xcb_cursor_t cursor;
static xcb_key_symbols_t *symbols;
static xcb_screen_t *scr;
static int numlockmask;
static bool beep = false;
static bool debug_mode = false;
+static bool dpms = false;
+static bool unlock_indicator = true;
+static struct ev_loop *main_loop;
+static struct ev_timer *clear_pam_wrong_timeout;
+static struct ev_timer *clear_indicator_timeout;
+
+static enum {
+ STATE_STARTED = 0, /* default state */
+ STATE_KEY_PRESSED = 1, /* key was pressed, show unlock indicator */
+ STATE_KEY_ACTIVE = 2, /* a key was pressed recently, highlight part
+ of the unlock indicator. */
+ STATE_BACKSPACE_ACTIVE = 3 /* backspace was pressed recently, highlight
+ part of the unlock indicator in red. */
+} unlock_state;
+
+static enum {
+ STATE_PAM_IDLE = 0, /* no PAM interaction at the moment */
+ STATE_PAM_VERIFY = 1, /* currently verifying the password via PAM */
+ STATE_PAM_WRONG = 2 /* the password was wrong */
+} pam_state;
#define DEBUG(fmt, ...) do { \
if (debug_mode) \
* resolution and returns it.
*
*/
-xcb_pixmap_t draw_image(xcb_visualtype_t *vistype, u_int32_t* resolution, char* color) {
+static xcb_pixmap_t draw_image(xcb_visualtype_t *vistype, u_int32_t* resolution) {
xcb_pixmap_t bg_pixmap = XCB_NONE;
#ifndef NOLIBCAIRO
- if (!img)
- return bg_pixmap;
-
bg_pixmap = create_bg_pixmap(conn, scr, resolution, color);
/* Initialize cairo */
cairo_surface_t *output;
output = cairo_xcb_surface_create(conn, bg_pixmap, vistype,
resolution[0], resolution[1]);
cairo_t *ctx = cairo_create(output);
- if (!tile) {
- cairo_set_source_surface(ctx, img, 0, 0);
- cairo_paint(ctx);
- } else {
- /* create a pattern and fill a rectangle as big as the screen */
- cairo_pattern_t *pattern;
- pattern = cairo_pattern_create_for_surface(img);
- cairo_set_source(ctx, pattern);
- cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
- cairo_rectangle(ctx, 0, 0, resolution[0], resolution[1]);
- cairo_fill(ctx);
- cairo_pattern_destroy(pattern);
+ if (img) {
+ if (!tile) {
+ cairo_set_source_surface(ctx, img, 0, 0);
+ cairo_paint(ctx);
+ } else {
+ /* create a pattern and fill a rectangle as big as the screen */
+ cairo_pattern_t *pattern;
+ pattern = cairo_pattern_create_for_surface(img);
+ cairo_set_source(ctx, pattern);
+ cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
+ cairo_rectangle(ctx, 0, 0, resolution[0], resolution[1]);
+ cairo_fill(ctx);
+ cairo_pattern_destroy(pattern);
+ }
+ }
+
+ if (unlock_state >= STATE_KEY_PRESSED && unlock_indicator) {
+ cairo_pattern_t *outer_pat = NULL;
+
+ outer_pat = cairo_pattern_create_linear(0, 0, 0, BUTTON_DIAMETER);
+ switch (pam_state) {
+ case STATE_PAM_VERIFY:
+ cairo_pattern_add_color_stop_rgb(outer_pat, 0, 139.0/255, 0, 250.0/255);
+ cairo_pattern_add_color_stop_rgb(outer_pat, 1, 51.0/255, 0, 250.0/255);
+ break;
+ case STATE_PAM_WRONG:
+ cairo_pattern_add_color_stop_rgb(outer_pat, 0, 255.0/250, 139.0/255, 0);
+ cairo_pattern_add_color_stop_rgb(outer_pat, 1, 125.0/255, 51.0/255, 0);
+ break;
+ case STATE_PAM_IDLE:
+ cairo_pattern_add_color_stop_rgb(outer_pat, 0, 139.0/255, 125.0/255, 0);
+ cairo_pattern_add_color_stop_rgb(outer_pat, 1, 51.0/255, 125.0/255, 0);
+ break;
+ }
+
+ /* Draw a (centered) circle with transparent background. */
+ cairo_set_line_width(ctx, 10.0);
+ cairo_arc(ctx,
+ (resolution[0] / 2) /* x */,
+ (resolution[1] / 2) /* y */,
+ BUTTON_RADIUS /* radius */,
+ 0 /* start */,
+ 2 * M_PI /* end */);
+
+ /* Use the appropriate color for the different PAM states
+ * (currently verifying, wrong password, or default) */
+ switch (pam_state) {
+ case STATE_PAM_VERIFY:
+ cairo_set_source_rgba(ctx, 0, 114.0/255, 255.0/255, 0.75);
+ break;
+ case STATE_PAM_WRONG:
+ cairo_set_source_rgba(ctx, 250.0/255, 0, 0, 0.75);
+ break;
+ default:
+ cairo_set_source_rgba(ctx, 0, 0, 0, 0.75);
+ break;
+ }
+ cairo_fill_preserve(ctx);
+ cairo_set_source(ctx, outer_pat);
+ cairo_stroke(ctx);
+
+ /* Draw an inner seperator line. */
+ cairo_set_source_rgb(ctx, 0, 0, 0);
+ cairo_set_line_width(ctx, 2.0);
+ cairo_arc(ctx,
+ (resolution[0] / 2) /* x */,
+ (resolution[1] / 2) /* y */,
+ BUTTON_RADIUS - 5 /* radius */,
+ 0,
+ 2 * M_PI);
+ cairo_stroke(ctx);
+
+ cairo_set_line_width(ctx, 10.0);
+
+ /* Display a (centered) text of the current PAM state. */
+ char *text = NULL;
+ switch (pam_state) {
+ case STATE_PAM_VERIFY:
+ text = "verifying…";
+ break;
+ case STATE_PAM_WRONG:
+ text = "wrong!";
+ break;
+ default:
+ break;
+ }
+
+ if (text) {
+ cairo_text_extents_t extents;
+ double x, y;
+
+ cairo_set_source_rgb(ctx, 0, 0, 0);
+ cairo_set_font_size(ctx, 28.0);
+
+ cairo_text_extents(ctx, text, &extents);
+ x = (resolution[0] / 2.0) - ((extents.width / 2) + extents.x_bearing);
+ y = (resolution[1] / 2.0) - ((extents.height / 2) + extents.y_bearing);
+
+ cairo_move_to(ctx, x, y);
+ cairo_show_text(ctx, text);
+ cairo_close_path(ctx);
+ }
+
+ /* After the user pressed any valid key or the backspace key, we
+ * highlight a random part of the unlock indicator to confirm this
+ * keypress. */
+ if (unlock_state == STATE_KEY_ACTIVE ||
+ unlock_state == STATE_BACKSPACE_ACTIVE) {
+ cairo_new_sub_path(ctx);
+ double highlight_start = (rand() % (int)(2 * M_PI * 100)) / 100.0;
+ DEBUG("Highlighting part %.2f\n", highlight_start);
+ cairo_arc(ctx, resolution[0] / 2 /* x */, resolution[1] / 2 /* y */,
+ BUTTON_RADIUS /* radius */, highlight_start,
+ highlight_start + (M_PI / 3.0));
+ if (unlock_state == STATE_KEY_ACTIVE) {
+ /* For normal keys, we use a lighter green. */
+ outer_pat = cairo_pattern_create_linear(0, 0, 0, BUTTON_DIAMETER);
+ cairo_pattern_add_color_stop_rgb(outer_pat, 0, 139.0/255, 219.0/255, 0);
+ cairo_pattern_add_color_stop_rgb(outer_pat, 1, 51.0/255, 219.0/255, 0);
+ } else {
+ /* For backspace, we use red. */
+ outer_pat = cairo_pattern_create_linear(0, 0, 0, BUTTON_DIAMETER);
+ cairo_pattern_add_color_stop_rgb(outer_pat, 0, 219.0/255, 139.0/255, 0);
+ cairo_pattern_add_color_stop_rgb(outer_pat, 1, 219.0/255, 51.0/255, 0);
+ }
+ cairo_set_source(ctx, outer_pat);
+ cairo_stroke(ctx);
+
+ /* Draw two little separators for the highlighted part of the
+ * unlock indicator. */
+ cairo_set_source_rgb(ctx, 0, 0, 0);
+ cairo_arc(ctx,
+ (resolution[0] / 2) /* x */,
+ (resolution[1] / 2) /* y */,
+ BUTTON_RADIUS /* radius */,
+ highlight_start /* start */,
+ highlight_start + (M_PI / 128.0) /* end */);
+ cairo_stroke(ctx);
+ cairo_arc(ctx,
+ (resolution[0] / 2) /* x */,
+ (resolution[1] / 2) /* y */,
+ BUTTON_RADIUS /* radius */,
+ highlight_start + (M_PI / 3.0) /* start */,
+ (highlight_start + (M_PI / 3.0)) + (M_PI / 128.0) /* end */);
+ cairo_stroke(ctx);
+ }
}
+
cairo_surface_destroy(output);
cairo_destroy(ctx);
#endif
return bg_pixmap;
}
+/*
+ * Calls draw_image on a new pixmap and swaps that with the current pixmap
+ *
+ */
+static void redraw_screen() {
+ xcb_pixmap_t bg_pixmap = draw_image(vistype, last_resolution);
+ xcb_change_window_attributes(conn, win, XCB_CW_BACK_PIXMAP, (uint32_t[1]){ bg_pixmap });
+ /* XXX: Possible optimization: Only update the area in the middle of the
+ * screen instead of the whole screen. */
+ xcb_clear_area(conn, 0, win, 0, 0, scr->width_in_pixels, scr->height_in_pixels);
+ xcb_flush(conn);
+}
+
+/*
+ * Resets pam_state to STATE_PAM_IDLE 2 seconds after an unsuccesful
+ * authentication event.
+ *
+ */
+static void clear_pam_wrong(EV_P_ ev_timer *w, int revents) {
+ pam_state = STATE_PAM_IDLE;
+ unlock_state = STATE_STARTED;
+ redraw_screen();
+}
+
+/*
+ * Hides the unlock indicator completely when there is no content in the
+ * password buffer.
+ *
+ */
+static void clear_indicator(EV_P_ ev_timer *w, int revents) {
+ DEBUG("Clear indicator\n");
+ unlock_state = STATE_STARTED;
+ redraw_screen();
+}
+
+/*
+ * (Re-)starts the clear_indicator timeout. Called after pressing backspace or
+ * after an unsuccessful authentication attempt.
+ *
+ */
+static void start_clear_indicator_timeout() {
+ if (clear_indicator_timeout) {
+ ev_timer_stop(main_loop, clear_indicator_timeout);
+ ev_timer_set(clear_indicator_timeout, 1.0, 0.);
+ ev_timer_start(main_loop, clear_indicator_timeout);
+ } else {
+ clear_indicator_timeout = calloc(sizeof(struct ev_timer), 1);
+ ev_timer_init(clear_indicator_timeout, clear_indicator, 1.0, 0.);
+ ev_timer_start(main_loop, clear_indicator_timeout);
+ }
+}
+
static void input_done() {
if (input_position == 0)
return;
- /* TODO: change cursor during authentication? */
+ if (clear_pam_wrong_timeout) {
+ ev_timer_stop(main_loop, clear_pam_wrong_timeout);
+ clear_pam_wrong_timeout = NULL;
+ }
+
+ pam_state = STATE_PAM_VERIFY;
+ redraw_screen();
+
if (pam_authenticate(pam_handle, 0) == PAM_SUCCESS) {
printf("successfully authenticated\n");
exit(0);
fprintf(stderr, "Authentication failure\n");
+ pam_state = STATE_PAM_WRONG;
+ redraw_screen();
+
+ /* Clear this state after 2 seconds (unless the user enters another
+ * password during that time). */
+ ev_now_update(main_loop);
+ clear_pam_wrong_timeout = calloc(sizeof(struct ev_timer), 1);
+ ev_timer_init(clear_pam_wrong_timeout, clear_pam_wrong, 2.0, 0.);
+ ev_timer_start(main_loop, clear_pam_wrong_timeout);
+
/* beep on authentication failure, if enabled */
if (beep) {
xcb_bell(conn, 100);
modeswitch_active, iso_level3_shift_active);
}
+static void redraw_timeout(EV_P_ ev_timer *w, int revents) {
+ redraw_screen();
+}
+
/*
* Handle key presses. Fixes state, then looks up the key symbol for the
* given keycode, then looks up the key symbol (as UCS-2), converts it to
/* decrement input_position to point to the previous glyph */
u8_dec(password, &input_position);
password[input_position] = '\0';
+
+ /* Clear this state after 2 seconds (unless the user enters another
+ * password during that time). */
+ start_clear_indicator_timeout();
+ unlock_state = STATE_BACKSPACE_ACTIVE;
+ redraw_screen();
+ unlock_state = STATE_KEY_PRESSED;
//printf("new input position = %d, new password = %s\n", input_position, password);
return;
}
input_position += convert_ucs_to_utf8((char*)inp, password + input_position);
password[input_position] = '\0';
DEBUG("current password = %s\n", password);
+
+ unlock_state = STATE_KEY_ACTIVE;
+ redraw_screen();
+ unlock_state = STATE_KEY_PRESSED;
+
+ struct ev_timer *timeout = calloc(sizeof(struct ev_timer), 1);
+ ev_timer_init(timeout, redraw_timeout, 0.25, 0.);
+ ev_timer_start(main_loop, timeout);
+
+ if (clear_indicator_timeout) {
+ ev_timer_stop(main_loop, clear_indicator_timeout);
+ clear_indicator_timeout = NULL;
+ }
}
/*
* and also redraw the image, if any.
*
*/
-void handle_screen_resize(xcb_visualtype_t *vistype, xcb_window_t win, uint32_t* last_resolution, char* color) {
+void handle_screen_resize(xcb_visualtype_t *vistype, xcb_window_t win, uint32_t* last_resolution) {
xcb_get_geometry_cookie_t geomc;
xcb_get_geometry_reply_t *geom;
geomc = xcb_get_geometry(conn, scr->root);
#ifndef NOLIBCAIRO
if (img) {
- xcb_pixmap_t bg_pixmap = draw_image(vistype, last_resolution, color);
+ xcb_pixmap_t bg_pixmap = draw_image(vistype, last_resolution);
xcb_change_window_attributes(conn, win, XCB_CW_BACK_PIXMAP, (uint32_t[1]){ bg_pixmap });
}
#endif
return 0;
}
+/*
+ * This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
+ * See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
+ *
+ */
+static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
+ /* empty, because xcb_prepare_cb and xcb_check_cb are used */
+}
+
+/*
+ * Flush before blocking (and waiting for new events)
+ *
+ */
+static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
+ xcb_flush(conn);
+}
+
+/*
+ * Instead of polling the X connection socket we leave this to
+ * xcb_poll_for_event() which knows better than we can ever know.
+ *
+ */
+static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
+ xcb_generic_event_t *event;
+
+ while ((event = xcb_poll_for_event(conn)) != NULL) {
+ if (event->response_type == 0) {
+ xcb_generic_error_t *error = (xcb_generic_error_t*)event;
+ fprintf(stderr, "X11 Error received! sequence 0x%x, error_code = %d\n",
+ error->sequence, error->error_code);
+ free(event);
+ continue;
+ }
+
+ /* Strip off the highest bit (set if the event is generated) */
+ int type = (event->response_type & 0x7F);
+
+ if (type == XCB_KEY_PRESS) {
+ handle_key_press((xcb_key_press_event_t*)event);
+ continue;
+ }
+
+ if (type == XCB_KEY_RELEASE) {
+ handle_key_release((xcb_key_release_event_t*)event);
+
+ /* If this was the backspace or escape key we are back at an
+ * empty input, so turn off the screen if DPMS is enabled */
+ if (dpms && input_position == 0)
+ dpms_turn_off_screen(conn);
+
+ continue;
+ }
+
+ if (type == XCB_VISIBILITY_NOTIFY) {
+ handle_visibility_notify((xcb_visibility_notify_event_t*)event);
+ continue;
+ }
+
+ if (type == XCB_MAPPING_NOTIFY) {
+ handle_mapping_notify((xcb_mapping_notify_event_t*)event);
+ continue;
+ }
+
+ if (type == XCB_CONFIGURE_NOTIFY) {
+ handle_screen_resize(vistype, win, last_resolution);
+ continue;
+ }
+
+ printf("WARNING: unhandled event of type %d\n", type);
+
+ free(event);
+ }
+}
+
int main(int argc, char *argv[]) {
bool dont_fork = false;
- bool dpms = false;
- char color[7] = "ffffff";
char *username;
#ifndef NOLIBCAIRO
char *image_path = NULL;
int ret;
struct pam_conv conv = {conv_callback, NULL};
int screen;
- xcb_visualtype_t *vistype;
- xcb_generic_event_t *event;
- xcb_window_t win;
int curs_choice = CURS_NONE;
char o;
int optind = 0;
{"pointer", required_argument, NULL , 'p'},
{"debug", no_argument, NULL, 0},
{"help", no_argument, NULL, 'h'},
+ {"no-unlock-indicator", no_argument, NULL, 'u'},
#ifndef NOLIBCAIRO
{"image", required_argument, NULL, 'i'},
{"tiling", no_argument, NULL, 't'},
if ((username = getenv("USER")) == NULL)
errx(1, "USER environment variable not set, please set it.\n");
- while ((o = getopt_long(argc, argv, "hvnbdc:p:"
+ while ((o = getopt_long(argc, argv, "hvnbdc:p:u"
#ifndef NOLIBCAIRO
"i:t"
#endif
break;
}
+ case 'u':
+ unlock_indicator = false;
+ break;
#ifndef NOLIBCAIRO
case 'i':
image_path = strdup(optarg);
debug_mode = true;
break;
default:
- errx(1, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-p win|default]"
+ errx(1, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
#ifndef NOLIBCAIRO
" [-i image.png] [-t]"
#else
}
}
+ /* We need (relatively) random numbers for highlighting a random part of
+ * the unlock indicator upon keypresses. */
+ srand(time(NULL));
+
/* Initialize PAM */
ret = pam_start("i3lock", username, &conv, &pam_handle);
if (ret != PAM_SUCCESS)
scr = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
vistype = get_root_visual_type(scr);
- uint32_t last_resolution[2] = {scr->width_in_pixels, scr->height_in_pixels};
-
+ last_resolution[0] = scr->width_in_pixels;
+ last_resolution[1] = scr->height_in_pixels;
#ifndef NOLIBCAIRO
#endif
/* Pixmap on which the image is rendered to (if any) */
- xcb_pixmap_t bg_pixmap = draw_image(vistype, last_resolution, color);
+ xcb_pixmap_t bg_pixmap = draw_image(vistype, last_resolution);
/* open the fullscreen window, already with the correct pixmap in place */
win = open_fullscreen_window(conn, scr, color, bg_pixmap);
if (dpms)
dpms_turn_off_screen(conn);
- while ((event = xcb_wait_for_event(conn))) {
- if (event->response_type == 0)
- errx(1, "XCB: Invalid event received");
-
- /* Strip off the highest bit (set if the event is generated) */
- int type = (event->response_type & 0x7F);
-
- if (type == XCB_KEY_PRESS) {
- handle_key_press((xcb_key_press_event_t*)event);
- continue;
- }
-
- if (type == XCB_KEY_RELEASE) {
- handle_key_release((xcb_key_release_event_t*)event);
-
- /* If this was the backspace or escape key we are back at an
- * empty input, so turn off the screen if DPMS is enabled */
- if (dpms && input_position == 0)
- dpms_turn_off_screen(conn);
-
- continue;
- }
+ /* Initialize the libev event loop. */
+ main_loop = EV_DEFAULT;
+ if (main_loop == NULL)
+ errx(EXIT_FAILURE, "Could not initialize libev. Bad LIBEV_FLAGS?\n");
- if (type == XCB_VISIBILITY_NOTIFY) {
- handle_visibility_notify((xcb_visibility_notify_event_t*)event);
- continue;
- }
+ struct ev_io *xcb_watcher = calloc(sizeof(struct ev_io), 1);
+ struct ev_check *xcb_check = calloc(sizeof(struct ev_check), 1);
+ struct ev_prepare *xcb_prepare = calloc(sizeof(struct ev_prepare), 1);
- if (type == XCB_MAPPING_NOTIFY) {
- handle_mapping_notify((xcb_mapping_notify_event_t*)event);
- continue;
- }
+ ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
+ ev_io_start(main_loop, xcb_watcher);
- if (type == XCB_CONFIGURE_NOTIFY) {
- handle_screen_resize(vistype, win, last_resolution, color);
- continue;
- }
+ ev_check_init(xcb_check, xcb_check_cb);
+ ev_check_start(main_loop, xcb_check);
- printf("WARNING: unhandled event of type %d\n", type);
- }
+ ev_prepare_init(xcb_prepare, xcb_prepare_cb);
+ ev_prepare_start(main_loop, xcb_prepare);
- return 0;
+ xcb_flush(conn);
+ ev_loop(main_loop, 0);
}
projects / i3 / i3lock / commitdiff