]> git.sur5r.net Git - i3/i3lock/blobdiff - i3lock.c
Remove DPMS support in favor of a wrapper script and xset(1).
[i3/i3lock] / i3lock.c
index 02e67940abf9ba1b7904e31aba86189535e02c99..a7b54f5823a86f0e0b84f90083d82cacab53a671 100644 (file)
--- a/i3lock.c
+++ b/i3lock.c
@@ -1,7 +1,7 @@
 /*
  * vim:ts=4:sw=4:expandtab
  *
- * © 2010-2013 Michael Stapelberg
+ * © 2010 Michael Stapelberg
  *
  * See LICENSE for licensing information
  *
@@ -16,7 +16,6 @@
 #include <stdint.h>
 #include <xcb/xcb.h>
 #include <xcb/xkb.h>
-#include <xcb/dpms.h>
 #include <err.h>
 #include <assert.h>
 #include <security/pam_appl.h>
@@ -57,13 +56,12 @@ int input_position = 0;
 static char password[512];
 static bool beep = false;
 bool debug_mode = false;
-static bool dpms = false;
 bool unlock_indicator = true;
+char *modifier_string = NULL;
 static bool dont_fork = false;
 struct ev_loop *main_loop;
 static struct ev_timer *clear_pam_wrong_timeout;
 static struct ev_timer *clear_indicator_timeout;
-static struct ev_timer *dpms_timeout;
 static struct ev_timer *discard_passwd_timeout;
 extern unlock_state_t unlock_state;
 extern pam_state_t pam_state;
@@ -84,7 +82,7 @@ bool ignore_empty_password = false;
 bool skip_repeated_empty_password = false;
 
 /* isutf, u8_dec © 2005 Jeff Bezanson, public domain */
-#define isutf(c) (((c) & 0xC0) != 0x80)
+#define isutf(c) (((c)&0xC0) != 0x80)
 
 /*
  * Decrements i to point to the previous unicode glyph
@@ -94,16 +92,6 @@ void u8_dec(char *s, int *i) {
     (void)(isutf(s[--(*i)]) || isutf(s[--(*i)]) || isutf(s[--(*i)]) || --(*i));
 }
 
-static void turn_monitors_on(void) {
-    if (dpms)
-        dpms_set_mode(conn, XCB_DPMS_DPMS_MODE_ON);
-}
-
-static void turn_monitors_off(void) {
-    if (dpms)
-        dpms_set_mode(conn, XCB_DPMS_DPMS_MODE_OFF);
-}
-
 /*
  * Loads the XKB keymap from the X11 server and feeds it to xkbcommon.
  * Necessary so that we can properly let xkbcommon track the keyboard state and
@@ -145,13 +133,6 @@ static bool load_keymap(void) {
  *
  */
 static bool load_compose_table(const char *locale) {
-    if (xkb_context == NULL) {
-        if ((xkb_context = xkb_context_new(0)) == NULL) {
-            fprintf(stderr, "[i3lock] could not create xkbcommon context\n");
-            return false;
-        }
-    }
-
     xkb_compose_table_unref(xkb_compose_table);
 
     if ((xkb_compose_table = xkb_compose_table_new_from_locale(xkb_context, locale, 0)) == NULL) {
@@ -188,7 +169,7 @@ static void clear_password_memory(void) {
         vpassword[c] = c + (int)beep;
 }
 
-ev_timerstart_timer(ev_timer *timer_obj, ev_tstamp timeout, ev_callback_t callback) {
+ev_timer *start_timer(ev_timer *timer_obj, ev_tstamp timeout, ev_callback_t callback) {
     if (timer_obj) {
         ev_timer_stop(main_loop, timer_obj);
         ev_timer_set(timer_obj, timeout, 0.);
@@ -205,7 +186,7 @@ ev_timer* start_timer(ev_timer *timer_obj, ev_tstamp timeout, ev_callback_t call
     return timer_obj;
 }
 
-ev_timerstop_timer(ev_timer *timer_obj) {
+ev_timer *stop_timer(ev_timer *timer_obj) {
     if (timer_obj) {
         ev_timer_stop(main_loop, timer_obj);
         free(timer_obj);
@@ -224,6 +205,12 @@ static void clear_pam_wrong(EV_P_ ev_timer *w, int revents) {
     unlock_state = STATE_STARTED;
     redraw_screen();
 
+    /* Clear modifier string. */
+    if (modifier_string != NULL) {
+        free(modifier_string);
+        modifier_string = NULL;
+    }
+
     /* Now free this timeout. */
     STOP_TIMER(clear_pam_wrong_timeout);
 }
@@ -240,22 +227,16 @@ static void clear_input(void) {
 
     /* Hide the unlock indicator after a bit if the password buffer is
      * empty. */
-    START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
-    unlock_state = STATE_BACKSPACE_ACTIVE;
-    redraw_screen();
-    unlock_state = STATE_KEY_PRESSED;
-}
-
-static void turn_off_monitors_cb(EV_P_ ev_timer *w, int revents) {
-    if (input_position == 0)
-        turn_monitors_off();
-
-    STOP_TIMER(dpms_timeout);
+    if (unlock_indicator) {
+        START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
+        unlock_state = STATE_BACKSPACE_ACTIVE;
+        redraw_screen();
+        unlock_state = STATE_KEY_PRESSED;
+    }
 }
 
 static void discard_passwd_cb(EV_P_ ev_timer *w, int revents) {
     clear_input();
-    turn_monitors_off();
     STOP_TIMER(discard_passwd_timeout);
 }
 
@@ -267,19 +248,60 @@ static void input_done(void) {
     if (pam_authenticate(pam_handle, 0) == PAM_SUCCESS) {
         DEBUG("successfully authenticated\n");
         clear_password_memory();
-        /* Turn the screen on, as it may have been turned off
-         * on release of the 'enter' key. */
-        turn_monitors_on();
+
+        /* PAM credentials should be refreshed, this will for example update any kerberos tickets.
+         * Related to credentials pam_end() needs to be called to cleanup any temporary
+         * credentials like kerberos /tmp/krb5cc_pam_* files which may of been left behind if the
+         * refresh of the credentials failed. */
+        pam_setcred(pam_handle, PAM_REFRESH_CRED);
+        pam_end(pam_handle, PAM_SUCCESS);
+
         exit(0);
     }
 
     if (debug_mode)
         fprintf(stderr, "Authentication failure\n");
 
+    /* Get state of Caps and Num lock modifiers, to be displayed in
+     * STATE_PAM_WRONG state */
+    xkb_mod_index_t idx, num_mods;
+    const char *mod_name;
+
+    num_mods = xkb_keymap_num_mods(xkb_keymap);
+
+    for (idx = 0; idx < num_mods; idx++) {
+        if (!xkb_state_mod_index_is_active(xkb_state, idx, XKB_STATE_MODS_EFFECTIVE))
+            continue;
+
+        mod_name = xkb_keymap_mod_get_name(xkb_keymap, idx);
+        if (mod_name == NULL)
+            continue;
+
+        /* Replace certain xkb names with nicer, human-readable ones. */
+        if (strcmp(mod_name, XKB_MOD_NAME_CAPS) == 0)
+            mod_name = "Caps Lock";
+        else if (strcmp(mod_name, XKB_MOD_NAME_ALT) == 0)
+            mod_name = "Alt";
+        else if (strcmp(mod_name, XKB_MOD_NAME_NUM) == 0)
+            mod_name = "Num Lock";
+        else if (strcmp(mod_name, XKB_MOD_NAME_LOGO) == 0)
+            mod_name = "Win";
+
+        char *tmp;
+        if (modifier_string == NULL) {
+            if (asprintf(&tmp, "%s", mod_name) != -1)
+                modifier_string = tmp;
+        } else if (asprintf(&tmp, "%s, %s", modifier_string, mod_name) != -1) {
+            free(modifier_string);
+            modifier_string = tmp;
+        }
+    }
+
     pam_state = STATE_PAM_WRONG;
     failed_attempts += 1;
     clear_input();
-    redraw_screen();
+    if (unlock_indicator)
+        redraw_screen();
 
     /* Clear this state after 2 seconds (unless the user enters another
      * password during that time). */
@@ -326,27 +348,27 @@ static void handle_key_press(xcb_key_press_event_t *event) {
     bool composed = false;
 
     ksym = xkb_state_key_get_one_sym(xkb_state, event->detail);
-    ctrl = xkb_state_mod_name_is_active(xkb_state, "Control", XKB_STATE_MODS_DEPRESSED);
+    ctrl = xkb_state_mod_name_is_active(xkb_state, XKB_MOD_NAME_CTRL, XKB_STATE_MODS_DEPRESSED);
 
     /* The buffer will be null-terminated, so n >= 2 for 1 actual character. */
     memset(buffer, '\0', sizeof(buffer));
 
     if (xkb_compose_state && xkb_compose_state_feed(xkb_compose_state, ksym) == XKB_COMPOSE_FEED_ACCEPTED) {
         switch (xkb_compose_state_get_status(xkb_compose_state)) {
-        case XKB_COMPOSE_NOTHING:
-            break;
-        case XKB_COMPOSE_COMPOSING:
-            return;
-        case XKB_COMPOSE_COMPOSED:
-            /* xkb_compose_state_get_utf8 doesn't include the terminating byte in the return value
+            case XKB_COMPOSE_NOTHING:
+                break;
+            case XKB_COMPOSE_COMPOSING:
+                return;
+            case XKB_COMPOSE_COMPOSED:
+                /* xkb_compose_state_get_utf8 doesn't include the terminating byte in the return value
              * as xkb_keysym_to_utf8 does. Adding one makes the variable n consistent. */
-            n = xkb_compose_state_get_utf8(xkb_compose_state, buffer, sizeof(buffer)) + 1;
-            //ksym = xkb_compose_state_get_one_sym(xkb_compose_state); // Not sure if it's needed
-            composed = true;
-            break;
-        case XKB_COMPOSE_CANCELLED:
-            xkb_compose_state_reset(xkb_compose_state);
-            break;
+                n = xkb_compose_state_get_utf8(xkb_compose_state, buffer, sizeof(buffer)) + 1;
+                ksym = xkb_compose_state_get_one_sym(xkb_compose_state);
+                composed = true;
+                break;
+            case XKB_COMPOSE_CANCELLED:
+                xkb_compose_state_reset(xkb_compose_state);
+                return;
         }
     }
 
@@ -355,54 +377,54 @@ static void handle_key_press(xcb_key_press_event_t *event) {
     }
 
     switch (ksym) {
-    case XKB_KEY_Return:
-    case XKB_KEY_KP_Enter:
-    case XKB_KEY_XF86ScreenSaver:
-        if (pam_state == STATE_PAM_WRONG)
-            return;
-
-        if (skip_without_validation()) {
-            clear_input();
+        case XKB_KEY_Return:
+        case XKB_KEY_KP_Enter:
+        case XKB_KEY_XF86ScreenSaver:
+            if (pam_state == STATE_PAM_WRONG)
+                return;
+
+            if (skip_without_validation()) {
+                clear_input();
+                return;
+            }
+            password[input_position] = '\0';
+            unlock_state = STATE_KEY_PRESSED;
+            redraw_screen();
+            input_done();
+            skip_repeated_empty_password = true;
             return;
-        }
-        password[input_position] = '\0';
-        unlock_state = STATE_KEY_PRESSED;
-        redraw_screen();
-        input_done();
-        skip_repeated_empty_password = true;
-        return;
-    default:
-        skip_repeated_empty_password = false;
+        default:
+            skip_repeated_empty_password = false;
     }
 
     switch (ksym) {
-    case XKB_KEY_u:
-        if (ctrl) {
-            DEBUG("C-u pressed\n");
+        case XKB_KEY_u:
+            if (ctrl) {
+                DEBUG("C-u pressed\n");
+                clear_input();
+                return;
+            }
+            break;
+
+        case XKB_KEY_Escape:
             clear_input();
             return;
-        }
-        break;
-
-    case XKB_KEY_Escape:
-        clear_input();
-        return;
 
-    case XKB_KEY_BackSpace:
-        if (input_position == 0)
-            return;
+        case XKB_KEY_BackSpace:
+            if (input_position == 0)
+                return;
 
-        /* decrement input_position to point to the previous glyph */
-        u8_dec(password, &input_position);
-        password[input_position] = '\0';
+            /* decrement input_position to point to the previous glyph */
+            u8_dec(password, &input_position);
+            password[input_position] = '\0';
 
-        /* Hide the unlock indicator after a bit if the password buffer is
+            /* Hide the unlock indicator after a bit if the password buffer is
          * empty. */
-        START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
-        unlock_state = STATE_BACKSPACE_ACTIVE;
-        redraw_screen();
-        unlock_state = STATE_KEY_PRESSED;
-        return;
+            START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
+            unlock_state = STATE_BACKSPACE_ACTIVE;
+            redraw_screen();
+            unlock_state = STATE_KEY_PRESSED;
+            return;
     }
 
     if ((input_position + 8) >= sizeof(password))
@@ -423,17 +445,20 @@ static void handle_key_press(xcb_key_press_event_t *event) {
         return;
 
     /* store it in the password array as UTF-8 */
-    memcpy(password+input_position, buffer, n-1);
-    input_position += n-1;
+    memcpy(password + input_position, buffer, n - 1);
+    input_position += n - 1;
     DEBUG("current password = %.*s\n", input_position, password);
 
-    unlock_state = STATE_KEY_ACTIVE;
-    redraw_screen();
-    unlock_state = STATE_KEY_PRESSED;
+    if (unlock_indicator) {
+        unlock_state = STATE_KEY_ACTIVE;
+        redraw_screen();
+        unlock_state = STATE_KEY_PRESSED;
+
+        struct ev_timer *timeout = NULL;
+        START_TIMER(timeout, TSTAMP_N_SECS(0.25), redraw_timeout);
+        STOP_TIMER(clear_indicator_timeout);
+    }
 
-    struct ev_timer *timeout = NULL;
-    START_TIMER(timeout, TSTAMP_N_SECS(0.25), redraw_timeout);
-    STOP_TIMER(clear_indicator_timeout);
     START_TIMER(discard_passwd_timeout, TSTAMP_N_MINS(3), discard_passwd_cb);
 }
 
@@ -447,9 +472,9 @@ static void handle_key_press(xcb_key_press_event_t *event) {
  *
  */
 static void handle_visibility_notify(xcb_connection_t *conn,
-    xcb_visibility_notify_event_t *event) {
+                                     xcb_visibility_notify_event_t *event) {
     if (event->state != XCB_VISIBILITY_UNOBSCURED) {
-        uint32_t values[] = { XCB_STACK_MODE_ABOVE };
+        uint32_t values[] = {XCB_STACK_MODE_ABOVE};
         xcb_configure_window(conn, event->window, XCB_CONFIG_WINDOW_STACK_MODE, values);
         xcb_flush(conn);
     }
@@ -474,7 +499,7 @@ static void process_xkb_event(xcb_generic_event_t *gevent) {
         xcb_xkb_new_keyboard_notify_event_t new_keyboard_notify;
         xcb_xkb_map_notify_event_t map_notify;
         xcb_xkb_state_notify_event_t state_notify;
-    } *event = (union xkb_event*)gevent;
+    } *event = (union xkb_event *)gevent;
 
     DEBUG("process_xkb_event for device %d\n", event->any.deviceID);
 
@@ -547,8 +572,7 @@ void handle_screen_resize(void) {
  *
  */
 static int conv_callback(int num_msg, const struct pam_message **msg,
-                         struct pam_response **resp, void *appdata_ptr)
-{
+                         struct pam_response **resp, void *appdata_ptr) {
     if (num_msg == 0)
         return 1;
 
@@ -604,7 +628,7 @@ static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
 
     while ((event = xcb_poll_for_event(conn)) != NULL) {
         if (event->response_type == 0) {
-            xcb_generic_error_t *error = (xcb_generic_error_t*)event;
+            xcb_generic_error_t *error = (xcb_generic_error_t *)event;
             if (debug_mode)
                 fprintf(stderr, "X11 Error received! sequence 0x%x, error_code = %d\n",
                         error->sequence, error->error_code);
@@ -617,20 +641,11 @@ static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
 
         switch (type) {
             case XCB_KEY_PRESS:
-                handle_key_press((xcb_key_press_event_t*)event);
-                break;
-
-            case XCB_KEY_RELEASE:
-                /* If this was the backspace or escape key we are back at an
-                 * empty input, so turn off the screen if DPMS is enabled, but
-                 * only do that after some timeout: maybe user mistyped and
-                 * will type again right away */
-                START_TIMER(dpms_timeout, TSTAMP_N_SECS(inactivity_timeout),
-                            turn_off_monitors_cb);
+                handle_key_press((xcb_key_press_event_t *)event);
                 break;
 
             case XCB_VISIBILITY_NOTIFY:
-                handle_visibility_notify(conn, (xcb_visibility_notify_event_t*)event);
+                handle_visibility_notify(conn, (xcb_visibility_notify_event_t *)event);
                 break;
 
             case XCB_MAP_NOTIFY:
@@ -677,18 +692,17 @@ static void raise_loop(xcb_window_t window) {
 
     /* We need to know about the window being obscured or getting destroyed. */
     xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK,
-        (uint32_t[]){
-            XCB_EVENT_MASK_VISIBILITY_CHANGE |
-            XCB_EVENT_MASK_STRUCTURE_NOTIFY
-        });
+                                 (uint32_t[]){
+                                     XCB_EVENT_MASK_VISIBILITY_CHANGE |
+                                     XCB_EVENT_MASK_STRUCTURE_NOTIFY});
     xcb_flush(conn);
 
     DEBUG("Watching window 0x%08x\n", window);
     while ((event = xcb_wait_for_event(conn)) != NULL) {
         if (event->response_type == 0) {
-            xcb_generic_error_t *error = (xcb_generic_error_t*)event;
+            xcb_generic_error_t *error = (xcb_generic_error_t *)event;
             DEBUG("X11 Error received! sequence 0x%x, error_code = %d\n",
-                 error->sequence, error->error_code);
+                  error->sequence, error->error_code);
             free(event);
             continue;
         }
@@ -697,16 +711,16 @@ static void raise_loop(xcb_window_t window) {
         DEBUG("Read event of type %d\n", type);
         switch (type) {
             case XCB_VISIBILITY_NOTIFY:
-                handle_visibility_notify(conn, (xcb_visibility_notify_event_t*)event);
+                handle_visibility_notify(conn, (xcb_visibility_notify_event_t *)event);
                 break;
             case XCB_UNMAP_NOTIFY:
-                DEBUG("UnmapNotify for 0x%08x\n", (((xcb_unmap_notify_event_t*)event)->window));
-                if (((xcb_unmap_notify_event_t*)event)->window == window)
+                DEBUG("UnmapNotify for 0x%08x\n", (((xcb_unmap_notify_event_t *)event)->window));
+                if (((xcb_unmap_notify_event_t *)event)->window == window)
                     exit(EXIT_SUCCESS);
                 break;
             case XCB_DESTROY_NOTIFY:
-                DEBUG("DestroyNotify for 0x%08x\n", (((xcb_destroy_notify_event_t*)event)->window));
-                if (((xcb_destroy_notify_event_t*)event)->window == window)
+                DEBUG("DestroyNotify for 0x%08x\n", (((xcb_destroy_notify_event_t *)event)->window));
+                if (((xcb_destroy_notify_event_t *)event)->window == window)
                     exit(EXIT_SUCCESS);
                 break;
             default:
@@ -732,7 +746,7 @@ int main(int argc, char *argv[]) {
         {"beep", no_argument, NULL, 'b'},
         {"dpms", no_argument, NULL, 'd'},
         {"color", required_argument, NULL, 'c'},
-        {"pointer", required_argument, NULL , 'p'},
+        {"pointer", required_argument, NULL, 'p'},
         {"debug", no_argument, NULL, 0},
         {"help", no_argument, NULL, 'h'},
         {"no-unlock-indicator", no_argument, NULL, 'u'},
@@ -741,8 +755,7 @@ int main(int argc, char *argv[]) {
         {"ignore-empty-password", no_argument, NULL, 'e'},
         {"inactivity-timeout", required_argument, NULL, 'I'},
         {"show-failed-attempts", no_argument, NULL, 'f'},
-        {NULL, no_argument, NULL, 0}
-    };
+        {NULL, no_argument, NULL, 0}};
 
     if ((pw = getpwuid(getuid())) == NULL)
         err(EXIT_FAILURE, "getpwuid() failed");
@@ -752,68 +765,67 @@ int main(int argc, char *argv[]) {
     char *optstring = "hvnbdc:p:ui:teI:f";
     while ((o = getopt_long(argc, argv, optstring, longopts, &optind)) != -1) {
         switch (o) {
-        case 'v':
-            errx(EXIT_SUCCESS, "version " VERSION " © 2010-2012 Michael Stapelberg");
-        case 'n':
-            dont_fork = true;
-            break;
-        case 'b':
-            beep = true;
-            break;
-        case 'd':
-            dpms = true;
-            break;
-        case 'I': {
-            int time = 0;
-            if (sscanf(optarg, "%d", &time) != 1 || time < 0)
-                errx(EXIT_FAILURE, "invalid timeout, it must be a positive integer\n");
-            inactivity_timeout = time;
-            break;
-        }
-        case 'c': {
-            char *arg = optarg;
+            case 'v':
+                errx(EXIT_SUCCESS, "version " VERSION " © 2010 Michael Stapelberg");
+            case 'n':
+                dont_fork = true;
+                break;
+            case 'b':
+                beep = true;
+                break;
+            case 'd':
+                fprintf(stderr, "DPMS support has been removed from i3lock. Please see the manpage i3lock(1).\n");
+                break;
+            case 'I': {
+                int time = 0;
+                if (sscanf(optarg, "%d", &time) != 1 || time < 0)
+                    errx(EXIT_FAILURE, "invalid timeout, it must be a positive integer\n");
+                inactivity_timeout = time;
+                break;
+            }
+            case 'c': {
+                char *arg = optarg;
 
-            /* Skip # if present */
-            if (arg[0] == '#')
-                arg++;
+                /* Skip # if present */
+                if (arg[0] == '#')
+                    arg++;
 
-            if (strlen(arg) != 6 || sscanf(arg, "%06[0-9a-fA-F]", color) != 1)
-                errx(EXIT_FAILURE, "color is invalid, it must be given in 3-byte hexadecimal format: rrggbb\n");
+                if (strlen(arg) != 6 || sscanf(arg, "%06[0-9a-fA-F]", color) != 1)
+                    errx(EXIT_FAILURE, "color is invalid, it must be given in 3-byte hexadecimal format: rrggbb\n");
 
-            break;
-        }
-        case 'u':
-            unlock_indicator = false;
-            break;
-        case 'i':
-            image_path = strdup(optarg);
-            break;
-        case 't':
-            tile = true;
-            break;
-        case 'p':
-            if (!strcmp(optarg, "win")) {
-                curs_choice = CURS_WIN;
-            } else if (!strcmp(optarg, "default")) {
-                curs_choice = CURS_DEFAULT;
-            } else {
-                errx(EXIT_FAILURE, "i3lock: Invalid pointer type given. Expected one of \"win\" or \"default\".\n");
+                break;
             }
-            break;
-        case 'e':
-            ignore_empty_password = true;
-            break;
-        case 0:
-            if (strcmp(longopts[optind].name, "debug") == 0)
-                debug_mode = true;
-            break;
-        case 'f':
-            show_failed_attempts = true;
-            break;
-        default:
-            errx(EXIT_FAILURE, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
-            " [-i image.png] [-t] [-e] [-I] [-f]"
-            );
+            case 'u':
+                unlock_indicator = false;
+                break;
+            case 'i':
+                image_path = strdup(optarg);
+                break;
+            case 't':
+                tile = true;
+                break;
+            case 'p':
+                if (!strcmp(optarg, "win")) {
+                    curs_choice = CURS_WIN;
+                } else if (!strcmp(optarg, "default")) {
+                    curs_choice = CURS_DEFAULT;
+                } else {
+                    errx(EXIT_FAILURE, "i3lock: Invalid pointer type given. Expected one of \"win\" or \"default\".\n");
+                }
+                break;
+            case 'e':
+                ignore_empty_password = true;
+                break;
+            case 0:
+                if (strcmp(longopts[optind].name, "debug") == 0)
+                    debug_mode = true;
+                break;
+            case 'f':
+                show_failed_attempts = true;
+                break;
+            default:
+                errx(EXIT_FAILURE, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
+                                   " [-i image.png] [-t] [-e] [-I timeout] [-f]");
         }
     }
 
@@ -844,13 +856,13 @@ int main(int argc, char *argv[]) {
         errx(EXIT_FAILURE, "Could not connect to X11, maybe you need to set DISPLAY?");
 
     if (xkb_x11_setup_xkb_extension(conn,
-            XKB_X11_MIN_MAJOR_XKB_VERSION,
-            XKB_X11_MIN_MINOR_XKB_VERSION,
-            0,
-            NULL,
-            NULL,
-            &xkb_base_event,
-            &xkb_base_error) != 1)
+                                    XKB_X11_MIN_MAJOR_XKB_VERSION,
+                                    XKB_X11_MIN_MINOR_XKB_VERSION,
+                                    0,
+                                    NULL,
+                                    NULL,
+                                    &xkb_base_event,
+                                    &xkb_base_error) != 1)
         errx(EXIT_FAILURE, "Could not setup XKB extension.");
 
     static const xcb_xkb_map_part_t required_map_parts =
@@ -897,27 +909,13 @@ int main(int argc, char *argv[]) {
     xinerama_init();
     xinerama_query_screens();
 
-    /* if DPMS is enabled, check if the X server really supports it */
-    if (dpms) {
-        xcb_dpms_capable_cookie_t dpmsc = xcb_dpms_capable(conn);
-        xcb_dpms_capable_reply_t *dpmsr;
-        if ((dpmsr = xcb_dpms_capable_reply(conn, dpmsc, NULL))) {
-            if (!dpmsr->capable) {
-                if (debug_mode)
-                    fprintf(stderr, "Disabling DPMS, X server not DPMS capable\n");
-                dpms = false;
-            }
-            free(dpmsr);
-        }
-    }
-
     screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
 
     last_resolution[0] = screen->width_in_pixels;
     last_resolution[1] = screen->height_in_pixels;
 
     xcb_change_window_attributes(conn, screen->root, XCB_CW_EVENT_MASK,
-            (uint32_t[]){ XCB_EVENT_MASK_STRUCTURE_NOTIFY });
+                                 (uint32_t[]){XCB_EVENT_MASK_STRUCTURE_NOTIFY});
 
     if (image_path) {
         /* Create a pixmap to render on, fill it with the background color */
@@ -957,8 +955,6 @@ int main(int argc, char *argv[]) {
      * keyboard. */
     (void)load_keymap();
 
-    turn_monitors_off();
-
     /* Initialize the libev event loop. */
     main_loop = EV_DEFAULT;
     if (main_loop == NULL)