update suckless

.xinitrc

@@ -20,19 +20,53 @@ xinput list --name-only | while IFS= read -r device; do
     esac
 done
 
-# Start desktop services
-bluetoothctl power off &
-picom &
-xbindkeys &
-xss-lock -l slock &
-feh --bg-scale "$HOME/Obrázky/wallpapers/glados.jpg" &
-
 dwmblocks &
 
+# i really need it :(
+export GPG_TTY=$(tty)
+
 exec dbus-run-session -- sh -c '
-    GPG_TTY=$(tty)
-    pipewire &
+    export GPG_TTY=$(tty)
+    export PATH=$HOME/.local/bin:$PATH
+
+    if ! pgrep -a -u "$(id -u)" -x pipewire >/dev/null 2>&1; then
+        pipewire &
+    fi
     sleep 1
     pkill -RTMIN+2 dwmblocks
+
+    # Start desktop services
+    bluetoothctl power off &
+    if ! pgrep -a -u "$(id -u)" -x picom >/dev/null 2>&1; then
+        picom --backend glx &
+    fi
+    if ! pgrep -a -u "$(id -u)" -x dunst >/dev/null 2>&1; then
+        dunst &
+    fi
+
+    if ! pgrep -a -u "$(id -u)" -x mpv >/dev/null 2>&1; then
+        mpv --shuffle --pause --no-video --loop-playlist -ao=alsa $HOME/Music &
+    fi
+    if ! pgrep -a -u "$(id -u)" -x mpv-shuffle-notify >/dev/null 2>&1; then
+        mpv-shuffle-notify &
+    fi
+
+    if ! pgrep -a -u "$(id -u)" -x sxhkd >/dev/null 2>&1; then
+        sxhkd &
+    fi
+
+    xbindkeys &
+
+    # xss-lock -l slock &
+    if ! pgrep -a -u "$(id -u)" -x xss-lock >/dev/null 2>&1; then
+        xss-lock -- \
+            env XSECURELOCK_AUTHPROTO=authproto_pam \
+                XSECURELOCK_PAM_SERVICE=login \
+                XSECURELOCK_NO_PAM_RHOST=1 \
+                xsecurelock &
+    fi
+
+    feh --bg-scale "$HOME/Pictures/wallpapers/glados.jpg" &
+
     exec dwm
 '

dwm/config/keybinds.h

@@ -1,12 +1,12 @@
 /* keybinds */
 
-/** 
+/**
  * free keys:
  *   a b c d e f g h i j k l m n o p q r s t u v w x y z space Return grave semicolon colon comma period slash backslash [0-9] minus equals
  *   2x with ShitMask
  *   = 38 * 2 = 76 different actions can be bound
- *   (+ however many Fn keys you have) 
- * 
+ *   (+ however many Fn keys you have)
+ *
  * taken keys:
  *   space Return m w, h j k l q ShiftMask|f, comma ShiftMask|comma period ShiftMask|period, ShiftMask|Return f p n ShiftMask|m s, [1-9], ShiftMask|e
  */
@@ -15,7 +15,7 @@ static const Key keys[] = {
 // essential apps
     { MODKEY,                       XK_space,  spawn,          {.v = dmenucmd } },
     { MODKEY,                       XK_Return, spawn,          {.v = termcmd } },
-    { MODKEY,                       XK_m,      spawn,          {.v = djcmd } },
+//    { MODKEY,                       XK_m,      spawn,          {.v = djcmd } },
     { MODKEY,                       XK_w,      spawn,          {.v = webbrowsercmd } },
 // window management
     { MODKEY,                       XK_j,      focusstack,     {.i = +1 } },

dwm/config/scratchpads.h

@@ -10,7 +10,7 @@ const char *spcmd0[] = {"st", "-n", "spterm", "-g", "120x34", NULL };
 const char *spcmd1[] = {"thunar", NULL };
 const char *spcmd2[] = {"keepassxc", NULL };
 const char *spcmd3[] = {"st", "-n", "spnmtui", "-g", "140x30", "-e", "nmtui", NULL };
-const char *spcmd4[] = {"st", "-n", "spmusic", "-g", "140x30", "-e", "ncmpcpp", NULL };
+const char *spcmd4[] = {"st", "-n", "spmusic", "-g", "140x30", "-e", "kew", NULL };
 const char *spcmd5[] = {"signal-desktop", NULL };
 
 static Sp scratchpads[] = {

slock/config.def.h

@@ -3,10 +3,20 @@ static const char *user  = "imp";
 static const char *group = "imp";
 
 static const char *colorname[NUMCOLS] = {
-	[INIT] =   "black",     /* after initialization */
-	[INPUT] =  "#735e97",   /* during input */
-	[FAILED] = "#CC3333",   /* wrong password */
+	[INIT]   = "#1d2021", /* Gruvbox dark hard background */
+	[INPUT]  = "#83a598", /* Gruvbox blue */
+	[FAILED] = "#fb4934", /* Gruvbox bright red */
+	[PAM]    = "#d3869b", /* waiting for PAM */
 };
 
 /* treat a cleared input like a wrong password (color) */
 static const int failonclear = 1;
+
+/* PAM service that's used for authentication */
+static const char* pam_service = "login";
+
+/* Background image path, should be available to the user above */
+static const char* background_image = "/usr/share/backgrounds/glados.jpg";
+
+/* time in seconds before the monitor shuts down */
+static const int monitortime = 10;

slock/config.def.h.BEFORE

@@ -0,0 +1,13 @@
+/* user and group to drop privileges to */
+static const char *user  = "imp";
+static const char *group = "imp";
+
+static const char *colorname[NUMCOLS] = {
+	[INIT]   = "#1d2021", /* Gruvbox dark hard background */
+	[INPUT]  = "#83a598", /* Gruvbox blue */
+	[FAILED] = "#fb4934", /* Gruvbox bright red */
+};
+
+/* treat a cleared input like a wrong password (color) */
+static const int failonclear = 1;
+

slock/config.def.h.orig

@@ -0,0 +1,19 @@
+/* user and group to drop privileges to */
+static const char *user  = "imp";
+static const char *group = "imp";
+
+static const char *colorname[NUMCOLS] = {
+	[INIT]   = "#1d2021", /* Gruvbox dark hard background */
+	[INPUT]  = "#83a598", /* Gruvbox blue */
+	[FAILED] = "#fb4934", /* Gruvbox bright red */
+	[PAM]    = "#d3869b", /* waiting for PAM */
+};
+
+/* treat a cleared input like a wrong password (color) */
+static const int failonclear = 1;
+
+/* PAM service that's used for authentication */
+static const char* pam_service = "login";
+
+/* Background image path, should be available to the user above */
+static const char* background_image = "/usr/share/backgrounds/glados.jpg";

slock/config.def.h.rej

@@ -0,0 +1,9 @@
+--- config.def.h
++++ config.def.h
+@@ -10,3 +10,6 @@ static const char *colorname[NUMCOLS] = {
+ 
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/* time in seconds before the monitor shuts down */
++static const int monitortime = 5;

slock/config.h

@@ -3,10 +3,20 @@ static const char *user  = "imp";
 static const char *group = "imp";
 
 static const char *colorname[NUMCOLS] = {
-	[INIT] =   "black",     /* after initialization */
-	[INPUT] =  "#735e97",   /* during input */
-	[FAILED] = "#CC3333",   /* wrong password */
+	[INIT]   = "#1d2021", /* Gruvbox dark hard background */
+	[INPUT]  = "#83a598", /* Gruvbox blue */
+	[FAILED] = "#fb4934", /* Gruvbox bright red */
+	[PAM]    = "#d3869b", /* waiting for PAM */
 };
 
 /* treat a cleared input like a wrong password (color) */
 static const int failonclear = 1;
+
+/* PAM service that's used for authentication */
+static const char* pam_service = "login";
+
+/* Background image path, should be available to the user above */
+static const char* background_image = "/usr/share/backgrounds/glados.jpg";
+
+/* time in seconds before the monitor shuts down */
+static const int monitortime = 10;

slock/config.mk

@@ -15,7 +15,7 @@ X11LIB = $(shell $(PKG_CONFIG) --libs x11 xft xrandr xinerama fontconfig freetyp
 
 # includes and libs
 INCS = ${X11INC}
-LIBS = -lc -lcrypt ${X11LIB}
+LIBS = -lc -lcrypt -lpam -lImlib2 -lXext ${X11LIB}
 
 # flags
 CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H

slock/config.mk.orig

@@ -0,0 +1,26 @@
+# slock version
+VERSION = 1.6-odweta
+
+# Customize below to fit your system
+
+# paths
+PREFIX = /usr
+MANPREFIX = ${PREFIX}/share/man
+
+PKG_CONFIG := pkg-config
+
+# compiler and linker flags
+X11INC = $(shell $(PKG_CONFIG) --cflags x11 xft xrandr xinerama fontconfig freetype2)
+X11LIB = $(shell $(PKG_CONFIG) --libs x11 xft xrandr xinerama fontconfig freetype2)
+
+# includes and libs
+INCS = ${X11INC}
+LIBS = -lc -lcrypt -lpam ${X11LIB}
+
+# flags
+CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
+LDFLAGS = -s ${LIBS}
+COMPATSRC = explicit_bzero.c
+
+CC = cc

slock/config.mk.rej

@@ -0,0 +1,11 @@
+--- config.mk
++++ config.mk
+@@ -12,7 +12,7 @@ X11LIB = /usr/X11R6/lib
+ 
+ # includes and libs
+ INCS = -I. -I/usr/include -I${X11INC}
+-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
++LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr -lImlib2
+ 
+ # flags
+ CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H

slock/patches/slock-02-xss-lock.diff

@@ -0,0 +1,88 @@
+diff -up a/slock.c b/slock.c
+--- a/slock.c	2026-07-28 03:28:03.120285888 +0530
++++ b/slock.c	2026-08-03 11:20:35.223992495 +0530
+@@ -6,7 +6,9 @@
+
+ #include <ctype.h>
+ #include <errno.h>
++#include <fcntl.h>
+ #include <grp.h>
++#include <limits.h>
+ #include <pwd.h>
+ #include <stdarg.h>
+ #include <stdlib.h>
+@@ -59,7 +61,6 @@ die(const char *errstr, ...)
+ }
+
+ #ifdef __linux__
+-#include <fcntl.h>
+ #include <linux/oom.h>
+
+ static void
+@@ -301,6 +302,28 @@ lockscreen(Display *dpy, struct xrandr *
+ 	return NULL;
+ }
+
++static int
++get_xss_sleep_lock_fd(void)
++{
++	char *env_str, *end;
++	long env_val;
++
++	env_str = getenv("XSS_SLEEP_LOCK_FD");
++	if (!env_str || !*env_str)
++		return -1;
++
++	errno = 0;
++	env_val = strtol(env_str, &end, 10);
++	if (errno ||
++	    *end ||
++	    (env_val < 0 || env_val > INT_MAX)) {
++		fprintf(stderr, "slock: strtol $XSS_SLEEP_LOCK_FD: %s\n",
++		        errno ? strerror(errno) : "invalid value");
++		return -1;
++	}
++	return (int)env_val;
++}
++
+ static void
+ usage(void)
+ {
+@@ -318,6 +341,7 @@ main(int argc, char **argv) {
+ 	const char *hash;
+ 	Display *dpy;
+ 	int s, nlocks, nscreens;
++	int lockfd;
+
+ 	ARGBEGIN {
+ 	case 'v':
+@@ -327,6 +351,18 @@ main(int argc, char **argv) {
+ 		usage();
+ 	} ARGEND
+
++	lockfd = get_xss_sleep_lock_fd();
++	if (lockfd >= 0) {
++		int flags = fcntl(lockfd, F_GETFD);
++		if (flags < 0) {
++			fprintf(stderr, "slock: fcntl $XSS_SLEEP_LOCK_FD F_GETFD: %s\n",
++			        strerror(errno));
++		} else if (fcntl(lockfd, F_SETFD, flags | FD_CLOEXEC) == -1) {
++			fprintf(stderr, "slock: fcntl $XSS_SLEEP_LOCK_FD F_SETFD: %s\n",
++			        strerror(errno));
++		}
++	}
++
+ 	/* validate drop-user and -group */
+ 	errno = 0;
+ 	if (!(pwd = getpwnam(user)))
+@@ -378,6 +414,9 @@ main(int argc, char **argv) {
+ 	if (nlocks != nscreens)
+ 		return 1;
+
++	if (lockfd >= 0 && close(lockfd) < 0)
++		fprintf(stderr, "slock: close $XSS_SLEEP_LOCK_FD: %s\n", strerror(errno));
++
+ 	/* run post-lock command */
+ 	if (argc > 0) {
+ 		pid_t pid;
+

slock/patches/slock-03-background_image.diff

@@ -0,0 +1,150 @@
+From 1c5a5383a1cf3351fe9c80a21cfbc98c5ec4355d Mon Sep 17 00:00:00 2001
+From: Yan Doroshenko <yan1994doroshenko@gmail.com>
+Date: Fri, 18 Mar 2022 12:28:13 +0100
+Subject: [PATCH] Provide a way to set a background image
+
+---
+ config.def.h |  5 ++++-
+ config.mk    |  2 +-
+ slock.c      | 50 +++++++++++++++++++++++++++++++++++++++++++++++---
+ 3 files changed, 52 insertions(+), 5 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 9855e21..eb88b3d 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -1,6 +1,6 @@
+ /* user and group to drop privileges to */
+ static const char *user  = "nobody";
+-static const char *group = "nogroup";
++static const char *group = "nobody";
+
+ static const char *colorname[NUMCOLS] = {
+ 	[INIT] =   "black",     /* after initialization */
+@@ -10,3 +10,6 @@ static const char *colorname[NUMCOLS] = {
+
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/* Background image path, should be available to the user above */
++static const char* background_image = "";
+diff --git a/config.mk b/config.mk
+index 74429ae..987819e 100644
+--- a/config.mk
++++ b/config.mk
+@@ -12,7 +12,7 @@ X11LIB = /usr/X11R6/lib
+
+ # includes and libs
+ INCS = -I. -I/usr/include -I${X11INC}
+-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
++LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr -lImlib2
+
+ # flags
+ CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+diff --git a/slock.c b/slock.c
+index 5ae738c..345a279 100644
+--- a/slock.c
++++ b/slock.c
+@@ -18,6 +18,7 @@
+ #include <X11/keysym.h>
+ #include <X11/Xlib.h>
+ #include <X11/Xutil.h>
++#include <Imlib2.h>
+
+ #include "arg.h"
+ #include "util.h"
+@@ -35,6 +36,7 @@ struct lock {
+ 	int screen;
+ 	Window root, win;
+ 	Pixmap pmap;
++	Pixmap bgmap;
+ 	unsigned long colors[NUMCOLS];
+ };
+
+@@ -46,6 +48,8 @@ struct xrandr {
+
+ #include "config.h"
+
++Imlib_Image image;
++
+ static void
+ die(const char *errstr, ...)
+ {
+@@ -190,9 +194,10 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ 			color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
+ 			if (running && oldc != color) {
+ 				for (screen = 0; screen < nscreens; screen++) {
+-					XSetWindowBackground(dpy,
+-					                     locks[screen]->win,
+-					                     locks[screen]->colors[color]);
++                                        if (locks[screen]->bgmap)
++                                                XSetWindowBackgroundPixmap(dpy, locks[screen]->win, locks[screen]->bgmap);
++                                        else
++                                                XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]);
+ 					XClearWindow(dpy, locks[screen]->win);
+ 				}
+ 				oldc = color;
+@@ -235,6 +240,17 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ 	lock->screen = screen;
+ 	lock->root = RootWindow(dpy, lock->screen);
+
++        if(image)
++        {
++            lock->bgmap = XCreatePixmap(dpy, lock->root, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), DefaultDepth(dpy, lock->screen));
++            imlib_context_set_display(dpy);
++            imlib_context_set_visual(DefaultVisual(dpy, lock->screen));
++            imlib_context_set_colormap(DefaultColormap(dpy, lock->screen));
++            imlib_context_set_drawable(lock->bgmap);
++            imlib_render_image_on_drawable(0, 0);
++            imlib_free_image();
++        }
++
+ 	for (i = 0; i < NUMCOLS; i++) {
+ 		XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen),
+ 		                 colorname[i], &color, &dummy);
+@@ -251,6 +267,8 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ 	                          CopyFromParent,
+ 	                          DefaultVisual(dpy, lock->screen),
+ 	                          CWOverrideRedirect | CWBackPixel, &wa);
++        if(lock->bgmap)
++          XSetWindowBackgroundPixmap(dpy, lock->win, lock->bgmap);
+ 	lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);
+ 	invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap,
+ 	                                &color, &color, 0, 0);
+@@ -355,6 +373,32 @@ main(int argc, char **argv) {
+ 	if (setuid(duid) < 0)
+ 		die("slock: setuid: %s\n", strerror(errno));
+
++	/* Load picture */
++        Imlib_Image buffer = imlib_load_image(background_image);
++	imlib_context_set_image(buffer);
++        int background_image_width = imlib_image_get_width();
++        int background_image_height = imlib_image_get_height();
++
++        /* Create an image to be rendered */
++	Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
++	image = imlib_create_image(scr->width, scr->height);
++        imlib_context_set_image(image);
++
++        /* Fill the image for every X monitor */
++        XRRMonitorInfo	*monitors;
++        int number_of_monitors;
++        monitors = XRRGetMonitors(dpy, RootWindow(dpy, XScreenNumberOfScreen(scr)), True, &number_of_monitors);
++
++        int i;
++        for (i = 0; i < number_of_monitors; i++) {
++            imlib_blend_image_onto_image(buffer, 0, 0, 0, background_image_width, background_image_height, monitors[i].x, monitors[i].y, monitors[i].width, monitors[i].height);
++        }
++
++        /* Clean up */
++        imlib_context_set_image(buffer);
++        imlib_free_image();
++        imlib_context_set_image(image);
++
+ 	/* check for Xrandr support */
+ 	rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
+
+--
+2.35.1
+
+

slock/patches/slock-03-pam_auth.diff

@@ -0,0 +1,155 @@
+diff --git a/config.def.h b/config.def.h
+index 9855e21..19e7f62 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -6,7 +6,11 @@ static const char *colorname[NUMCOLS] = {
+ 	[INIT] =   "black",     /* after initialization */
+ 	[INPUT] =  "#005577",   /* during input */
+ 	[FAILED] = "#CC3333",   /* wrong password */
++	[PAM] =    "#9400D3",   /* waiting for PAM */
+ };
+
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/* PAM service that's used for authentication */
++static const char* pam_service = "login";
+diff --git a/config.mk b/config.mk
+index 74429ae..6e82074 100644
+--- a/config.mk
++++ b/config.mk
+@@ -12,7 +12,7 @@ X11LIB = /usr/X11R6/lib
+
+ # includes and libs
+ INCS = -I. -I/usr/include -I${X11INC}
+-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
++LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr -lpam
+
+ # flags
+ CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+diff --git a/slock.c b/slock.c
+index 5ae738c..3a8da42 100644
+--- a/slock.c
++++ b/slock.c
+@@ -18,16 +18,22 @@
+ #include <X11/keysym.h>
+ #include <X11/Xlib.h>
+ #include <X11/Xutil.h>
++#include <security/pam_appl.h>
++#include <security/pam_misc.h>
+
+ #include "arg.h"
+ #include "util.h"
+
+ char *argv0;
++static int pam_conv(int num_msg, const struct pam_message **msg, struct pam_response **resp, void *appdata_ptr);
++struct pam_conv pamc = {pam_conv, NULL};
++char passwd[256];
+
+ enum {
+ 	INIT,
+ 	INPUT,
+ 	FAILED,
++	PAM,
+ 	NUMCOLS
+ };
+
+@@ -57,6 +63,31 @@ die(const char *errstr, ...)
+ 	exit(1);
+ }
+
++static int
++pam_conv(int num_msg, const struct pam_message **msg,
++		struct pam_response **resp, void *appdata_ptr)
++{
++	int retval = PAM_CONV_ERR;
++	for(int i=0; i<num_msg; i++) {
++		if (msg[i]->msg_style == PAM_PROMPT_ECHO_OFF &&
++				strncmp(msg[i]->msg, "Password: ", 10) == 0) {
++			struct pam_response *resp_msg = malloc(sizeof(struct pam_response));
++			if (!resp_msg)
++				die("malloc failed\n");
++			char *password = malloc(strlen(passwd) + 1);
++			if (!password)
++				die("malloc failed\n");
++			memset(password, 0, strlen(passwd) + 1);
++			strcpy(password, passwd);
++			resp_msg->resp_retcode = 0;
++			resp_msg->resp = password;
++			resp[i] = resp_msg;
++			retval = PAM_SUCCESS;
++		}
++	}
++	return retval;
++}
++
+ #ifdef __linux__
+ #include <fcntl.h>
+ #include <linux/oom.h>
+@@ -121,6 +152,8 @@ gethash(void)
+ 	}
+ #endif /* HAVE_SHADOW_H */
+
++	/* pam, store user name */
++	hash = pw->pw_name;
+ 	return hash;
+ }
+
+@@ -129,11 +162,12 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+        const char *hash)
+ {
+ 	XRRScreenChangeNotifyEvent *rre;
+-	char buf[32], passwd[256], *inputhash;
+-	int num, screen, running, failure, oldc;
++	char buf[32];
++	int num, screen, running, failure, oldc, retval;
+ 	unsigned int len, color;
+ 	KeySym ksym;
+ 	XEvent ev;
++	pam_handle_t *pamh;
+
+ 	len = 0;
+ 	running = 1;
+@@ -160,10 +194,26 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ 			case XK_Return:
+ 				passwd[len] = '\0';
+ 				errno = 0;
+-				if (!(inputhash = crypt(passwd, hash)))
+-					fprintf(stderr, "slock: crypt: %s\n", strerror(errno));
++				retval = pam_start(pam_service, hash, &pamc, &pamh);
++				color = PAM;
++				for (screen = 0; screen < nscreens; screen++) {
++					XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[color]);
++					XClearWindow(dpy, locks[screen]->win);
++					XRaiseWindow(dpy, locks[screen]->win);
++				}
++				XSync(dpy, False);
++
++				if (retval == PAM_SUCCESS)
++					retval = pam_authenticate(pamh, 0);
++				if (retval == PAM_SUCCESS)
++					retval = pam_acct_mgmt(pamh, 0);
++
++				running = 1;
++				if (retval == PAM_SUCCESS)
++					running = 0;
+ 				else
+-					running = !!strcmp(inputhash, hash);
++					fprintf(stderr, "slock: %s\n", pam_strerror(pamh, retval));
++				pam_end(pamh, retval);
+ 				if (running) {
+ 					XBell(dpy, 100);
+ 					failure = 1;
+@@ -339,10 +389,9 @@ main(int argc, char **argv) {
+ 	dontkillme();
+ #endif
+
++	/* the contents of hash are used to transport the current user name */
+ 	hash = gethash();
+ 	errno = 0;
+-	if (!crypt("", hash))
+-		die("slock: crypt: %s\n", strerror(errno));
+
+ 	if (!(dpy = XOpenDisplay(NULL)))
+ 		die("slock: cannot open display\n");
+

slock/patches/slock-04-dpms.diff

@@ -0,0 +1,63 @@
+diff --git a/config.def.h b/config.def.h
+index 9855e21..d01bd38 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -10,3 +10,6 @@ static const char *colorname[NUMCOLS] = {
+
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/* time in seconds before the monitor shuts down */
++static const int monitortime = 5;
+diff --git a/slock.c b/slock.c
+index d2f0886..f65a43b 100644
+--- a/slock.c
++++ b/slock.c
+@@ -15,6 +15,7 @@
+ #include <unistd.h>
+ #include <sys/types.h>
+ #include <X11/extensions/Xrandr.h>
++#include <X11/extensions/dpms.h>
+ #include <X11/keysym.h>
+ #include <X11/Xlib.h>
+ #include <X11/Xutil.h>
+@@ -306,6 +307,7 @@ main(int argc, char **argv) {
+ 	const char *hash;
+ 	Display *dpy;
+ 	int s, nlocks, nscreens;
++	CARD16 standby, suspend, off;
+
+ 	ARGBEGIN {
+ 	case 'v':
+@@ -366,6 +368,20 @@ main(int argc, char **argv) {
+ 	if (nlocks != nscreens)
+ 		return 1;
+
++	/* DPMS magic to disable the monitor */
++	if (!DPMSCapable(dpy))
++		die("slock: DPMSCapable failed\n");
++	if (!DPMSEnable(dpy))
++		die("slock: DPMSEnable failed\n");
++	if (!DPMSGetTimeouts(dpy, &standby, &suspend, &off))
++		die("slock: DPMSGetTimeouts failed\n");
++	if (!standby || !suspend || !off)
++		die("slock: at least one DPMS variable is zero\n");
++	if (!DPMSSetTimeouts(dpy, monitortime, monitortime, monitortime))
++		die("slock: DPMSSetTimeouts failed\n");
++
++	XSync(dpy, 0);
++
+ 	/* run post-lock command */
+ 	if (argc > 0) {
+ 		switch (fork()) {
+@@ -383,5 +399,9 @@ main(int argc, char **argv) {
+ 	/* everything is now blank. Wait for the correct password */
+ 	readpw(dpy, &rr, locks, nscreens, hash);
+
++	/* reset DPMS values to inital ones */
++	DPMSSetTimeouts(dpy, standby, suspend, off);
++	XSync(dpy, 0);
++
+ 	return 0;
+ }
+

slock/slock.c

@@ -6,7 +6,9 @@
 
 #include <ctype.h>
 #include <errno.h>
+#include <fcntl.h>
 #include <grp.h>
+#include <limits.h>
 #include <pwd.h>
 #include <stdarg.h>
 #include <stdlib.h>
@@ -16,20 +18,29 @@
 #include <spawn.h>
 #include <sys/types.h>
 #include <X11/extensions/Xrandr.h>
+#include <X11/extensions/dpms.h>
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/XF86keysym.h>
+#include <security/pam_appl.h>
+#include <security/pam_misc.h>
+#include <Imlib2.h>
 
 #include "arg.h"
 #include "util.h"
 
 char *argv0;
 
+static int pam_conv(int num_msg, const struct pam_message **msg, struct pam_response **resp, void *appdata_ptr);
+struct pam_conv pamc = {pam_conv, NULL};
+char passwd[256];
+
 enum {
 	INIT,
 	INPUT,
 	FAILED,
+    PAM,
 	NUMCOLS
 };
 
@@ -37,6 +48,7 @@ struct lock {
 	int screen;
 	Window root, win;
 	Pixmap pmap;
+	Pixmap bgmap;
 	unsigned long colors[NUMCOLS];
 };
 
@@ -48,6 +60,8 @@ struct xrandr {
 
 #include "config.h"
 
+Imlib_Image image;
+
 static void
 die(const char *errstr, ...)
 {
@@ -59,8 +73,32 @@ die(const char *errstr, ...)
 	exit(1);
 }
 
+static int
+pam_conv(int num_msg, const struct pam_message **msg,
+		struct pam_response **resp, void *appdata_ptr)
+{
+	int retval = PAM_CONV_ERR;
+	for(int i=0; i<num_msg; i++) {
+		if (msg[i]->msg_style == PAM_PROMPT_ECHO_OFF &&
+				strncmp(msg[i]->msg, "Password: ", 10) == 0) {
+			struct pam_response *resp_msg = malloc(sizeof(struct pam_response));
+			if (!resp_msg)
+				die("malloc failed\n");
+			char *password = malloc(strlen(passwd) + 1);
+			if (!password)
+				die("malloc failed\n");
+			memset(password, 0, strlen(passwd) + 1);
+			strcpy(password, passwd);
+			resp_msg->resp_retcode = 0;
+			resp_msg->resp = password;
+			resp[i] = resp_msg;
+			retval = PAM_SUCCESS;
+		}
+	}
+	return retval;
+}
+
 #ifdef __linux__
-#include <fcntl.h>
 #include <linux/oom.h>
 
 static void
@@ -123,6 +161,8 @@ gethash(void)
 	}
 #endif /* HAVE_SHADOW_H */
 
+	/* pam, store user name */
+	hash = pw->pw_name;
 	return hash;
 }
 
@@ -131,11 +171,12 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
        const char *hash)
 {
 	XRRScreenChangeNotifyEvent *rre;
-	char buf[32], passwd[256], *inputhash;
-	int num, screen, running, failure, oldc;
+	char buf[32];
+	int num, screen, running, failure, oldc, retval;
 	unsigned int len, color;
 	KeySym ksym;
 	XEvent ev;
+	pam_handle_t *pamh;
 
 	len = 0;
 	running = 1;
@@ -170,10 +211,26 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 			case XK_Return:
 				passwd[len] = '\0';
 				errno = 0;
-				if (!(inputhash = crypt(passwd, hash)))
-					fprintf(stderr, "slock: crypt: %s\n", strerror(errno));
+				retval = pam_start(pam_service, hash, &pamc, &pamh);
+				// color = PAM;
+				// for (screen = 0; screen < nscreens; screen++) {
+				// 	XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[color]);
+				// 	XClearWindow(dpy, locks[screen]->win);
+				// 	XRaiseWindow(dpy, locks[screen]->win);
+				// }
+				// XSync(dpy, False);
+
+				if (retval == PAM_SUCCESS)
+					retval = pam_authenticate(pamh, 0);
+				if (retval == PAM_SUCCESS)
+					retval = pam_acct_mgmt(pamh, 0);
+
+				running = 1;
+				if (retval == PAM_SUCCESS)
+					running = 0;
 				else
-					running = !!strcmp(inputhash, hash);
+					fprintf(stderr, "slock: %s\n", pam_strerror(pamh, retval));
+				pam_end(pamh, retval);
 				if (running) {
 					XBell(dpy, 100);
 					failure = 1;
@@ -203,9 +260,10 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 			color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
 			if (running && oldc != color) {
 				for (screen = 0; screen < nscreens; screen++) {
-					XSetWindowBackground(dpy,
-					                     locks[screen]->win,
-					                     locks[screen]->colors[color]);
+                                        if (locks[screen]->bgmap)
+                                                XSetWindowBackgroundPixmap(dpy, locks[screen]->win, locks[screen]->bgmap);
+                                        else
+                                                XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]);
 					XClearWindow(dpy, locks[screen]->win);
 				}
 				oldc = color;
@@ -248,6 +306,17 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	lock->screen = screen;
 	lock->root = RootWindow(dpy, lock->screen);
 
+        if(image)
+        {
+            lock->bgmap = XCreatePixmap(dpy, lock->root, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), DefaultDepth(dpy, lock->screen));
+            imlib_context_set_display(dpy);
+            imlib_context_set_visual(DefaultVisual(dpy, lock->screen));
+            imlib_context_set_colormap(DefaultColormap(dpy, lock->screen));
+            imlib_context_set_drawable(lock->bgmap);
+            imlib_render_image_on_drawable(0, 0);
+            imlib_free_image();
+        }
+
 	for (i = 0; i < NUMCOLS; i++) {
 		XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen),
 		                 colorname[i], &color, &dummy);
@@ -264,6 +333,8 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	                          CopyFromParent,
 	                          DefaultVisual(dpy, lock->screen),
 	                          CWOverrideRedirect | CWBackPixel, &wa);
+        if(lock->bgmap)
+          XSetWindowBackgroundPixmap(dpy, lock->win, lock->bgmap);
 	lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);
 	invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap,
 	                                &color, &color, 0, 0);
@@ -310,6 +381,28 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	return NULL;
 }
 
+static int
+get_xss_sleep_lock_fd(void)
+{
+	char *env_str, *end;
+	long env_val;
+
+	env_str = getenv("XSS_SLEEP_LOCK_FD");
+	if (!env_str || !*env_str)
+		return -1;
+
+	errno = 0;
+	env_val = strtol(env_str, &end, 10);
+	if (errno ||
+	    *end ||
+	    (env_val < 0 || env_val > INT_MAX)) {
+		fprintf(stderr, "slock: strtol $XSS_SLEEP_LOCK_FD: %s\n",
+		        errno ? strerror(errno) : "invalid value");
+		return -1;
+	}
+	return (int)env_val;
+}
+
 static void
 usage(void)
 {
@@ -327,6 +420,8 @@ main(int argc, char **argv) {
 	const char *hash;
 	Display *dpy;
 	int s, nlocks, nscreens;
+	CARD16 standby, suspend, off;
+	int lockfd;
 
 	ARGBEGIN {
 	case 'v':
@@ -336,6 +431,18 @@ main(int argc, char **argv) {
 		usage();
 	} ARGEND
 
+	lockfd = get_xss_sleep_lock_fd();
+	if (lockfd >= 0) {
+		int flags = fcntl(lockfd, F_GETFD);
+		if (flags < 0) {
+			fprintf(stderr, "slock: fcntl $XSS_SLEEP_LOCK_FD F_GETFD: %s\n",
+			        strerror(errno));
+		} else if (fcntl(lockfd, F_SETFD, flags | FD_CLOEXEC) == -1) {
+			fprintf(stderr, "slock: fcntl $XSS_SLEEP_LOCK_FD F_SETFD: %s\n",
+			        strerror(errno));
+		}
+	}
+
 	/* validate drop-user and -group */
 	errno = 0;
 	if (!(pwd = getpwnam(user)))
@@ -352,10 +459,9 @@ main(int argc, char **argv) {
 	dontkillme();
 #endif
 
+	/* the contents of hash are used to transport the current user name */
 	hash = gethash();
 	errno = 0;
-	if (!crypt("", hash))
-		die("slock: crypt: %s\n", strerror(errno));
 
 	if (!(dpy = XOpenDisplay(NULL)))
 		die("slock: cannot open display\n");
@@ -368,6 +474,32 @@ main(int argc, char **argv) {
 	if (setuid(duid) < 0)
 		die("slock: setuid: %s\n", strerror(errno));
 
+	/* Load picture */
+        Imlib_Image buffer = imlib_load_image(background_image);
+	imlib_context_set_image(buffer);
+        int background_image_width = imlib_image_get_width();
+        int background_image_height = imlib_image_get_height();
+
+        /* Create an image to be rendered */
+	Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
+	image = imlib_create_image(scr->width, scr->height);
+        imlib_context_set_image(image);
+
+        /* Fill the image for every X monitor */
+        XRRMonitorInfo	*monitors;
+        int number_of_monitors;
+        monitors = XRRGetMonitors(dpy, RootWindow(dpy, XScreenNumberOfScreen(scr)), True, &number_of_monitors);
+
+        int i;
+        for (i = 0; i < number_of_monitors; i++) {
+            imlib_blend_image_onto_image(buffer, 0, 0, 0, background_image_width, background_image_height, monitors[i].x, monitors[i].y, monitors[i].width, monitors[i].height);
+        }
+
+        /* Clean up */
+        imlib_context_set_image(buffer);
+        imlib_free_image();
+        imlib_context_set_image(image);
+
 	/* check for Xrandr support */
 	rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
 
@@ -387,6 +519,23 @@ main(int argc, char **argv) {
 	if (nlocks != nscreens)
 		return 1;
 
+	if (lockfd >= 0 && close(lockfd) < 0)
+		fprintf(stderr, "slock: close $XSS_SLEEP_LOCK_FD: %s\n", strerror(errno));
+
+	/* DPMS magic to disable the monitor */
+	if (!DPMSCapable(dpy))
+		die("slock: DPMSCapable failed\n");
+	if (!DPMSEnable(dpy))
+		die("slock: DPMSEnable failed\n");
+	if (!DPMSGetTimeouts(dpy, &standby, &suspend, &off))
+		die("slock: DPMSGetTimeouts failed\n");
+	if (!standby || !suspend || !off)
+		die("slock: at least one DPMS variable is zero\n");
+	if (!DPMSSetTimeouts(dpy, monitortime, monitortime, monitortime))
+		die("slock: DPMSSetTimeouts failed\n");
+
+	XSync(dpy, 0);
+
 	/* run post-lock command */
 	if (argc > 0) {
 		pid_t pid;
@@ -401,5 +550,9 @@ main(int argc, char **argv) {
 	/* everything is now blank. Wait for the correct password */
 	readpw(dpy, &rr, locks, nscreens, hash);
 
+	/* reset DPMS values to inital ones */
+	DPMSSetTimeouts(dpy, standby, suspend, off);
+	XSync(dpy, 0);
+
 	return 0;
 }

slock/slock.c.BEFORE

@@ -0,0 +1,405 @@
+/* See LICENSE file for license details. */
+#define _XOPEN_SOURCE 500
+#if HAVE_SHADOW_H
+#include <shadow.h>
+#endif
+
+#include <ctype.h>
+#include <errno.h>
+#include <grp.h>
+#include <pwd.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <spawn.h>
+#include <sys/types.h>
+#include <X11/extensions/Xrandr.h>
+#include <X11/keysym.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/XF86keysym.h>
+
+#include "arg.h"
+#include "util.h"
+
+char *argv0;
+
+enum {
+	INIT,
+	INPUT,
+	FAILED,
+	NUMCOLS
+};
+
+struct lock {
+	int screen;
+	Window root, win;
+	Pixmap pmap;
+	unsigned long colors[NUMCOLS];
+};
+
+struct xrandr {
+	int active;
+	int evbase;
+	int errbase;
+};
+
+#include "config.h"
+
+static void
+die(const char *errstr, ...)
+{
+	va_list ap;
+
+	va_start(ap, errstr);
+	vfprintf(stderr, errstr, ap);
+	va_end(ap);
+	exit(1);
+}
+
+#ifdef __linux__
+#include <fcntl.h>
+#include <linux/oom.h>
+
+static void
+dontkillme(void)
+{
+	FILE *f;
+	const char oomfile[] = "/proc/self/oom_score_adj";
+
+	if (!(f = fopen(oomfile, "w"))) {
+		if (errno == ENOENT)
+			return;
+		die("slock: fopen %s: %s\n", oomfile, strerror(errno));
+	}
+	fprintf(f, "%d", OOM_SCORE_ADJ_MIN);
+	if (fclose(f)) {
+		if (errno == EACCES)
+			die("slock: unable to disable OOM killer. "
+			    "Make sure to suid or sgid slock.\n");
+		else
+			die("slock: fclose %s: %s\n", oomfile, strerror(errno));
+	}
+}
+#endif
+
+static const char *
+gethash(void)
+{
+	const char *hash;
+	struct passwd *pw;
+
+	/* Check if the current user has a password entry */
+	errno = 0;
+	if (!(pw = getpwuid(getuid()))) {
+		if (errno)
+			die("slock: getpwuid: %s\n", strerror(errno));
+		else
+			die("slock: cannot retrieve password entry\n");
+	}
+	hash = pw->pw_passwd;
+
+#if HAVE_SHADOW_H
+	if (!strcmp(hash, "x")) {
+		struct spwd *sp;
+		if (!(sp = getspnam(pw->pw_name)))
+			die("slock: getspnam: cannot retrieve shadow entry. "
+			    "Make sure to suid or sgid slock.\n");
+		hash = sp->sp_pwdp;
+	}
+#else
+	if (!strcmp(hash, "*")) {
+#ifdef __OpenBSD__
+		if (!(pw = getpwuid_shadow(getuid())))
+			die("slock: getpwnam_shadow: cannot retrieve shadow entry. "
+			    "Make sure to suid or sgid slock.\n");
+		hash = pw->pw_passwd;
+#else
+		die("slock: getpwuid: cannot retrieve shadow entry. "
+		    "Make sure to suid or sgid slock.\n");
+#endif /* __OpenBSD__ */
+	}
+#endif /* HAVE_SHADOW_H */
+
+	return hash;
+}
+
+static void
+readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+       const char *hash)
+{
+	XRRScreenChangeNotifyEvent *rre;
+	char buf[32], passwd[256], *inputhash;
+	int num, screen, running, failure, oldc;
+	unsigned int len, color;
+	KeySym ksym;
+	XEvent ev;
+
+	len = 0;
+	running = 1;
+	failure = 0;
+	oldc = INIT;
+
+	while (running && !XNextEvent(dpy, &ev)) {
+		if (ev.type == KeyPress) {
+			explicit_bzero(&buf, sizeof(buf));
+			num = XLookupString(&ev.xkey, buf, sizeof(buf), &ksym, 0);
+			if (IsKeypadKey(ksym)) {
+				if (ksym == XK_KP_Enter)
+					ksym = XK_Return;
+				else if (ksym >= XK_KP_0 && ksym <= XK_KP_9)
+					ksym = (ksym - XK_KP_0) + XK_0;
+			}
+			if (IsFunctionKey(ksym) ||
+			    IsKeypadKey(ksym) ||
+			    IsMiscFunctionKey(ksym) ||
+			    IsPFKey(ksym) ||
+			    IsPrivateKeypadKey(ksym))
+				continue;
+			switch (ksym) {
+            case XF86XK_AudioMute:
+            case XF86XK_AudioRaiseVolume:
+            case XF86XK_AudioLowerVolume:
+            case XF86XK_AudioMicMute:
+            case XF86XK_MonBrightnessUp:
+            case XF86XK_MonBrightnessDown:
+                XSendEvent(dpy, DefaultRootWindow(dpy), True, KeyPressMask, &ev);
+                break;
+			case XK_Return:
+				passwd[len] = '\0';
+				errno = 0;
+				if (!(inputhash = crypt(passwd, hash)))
+					fprintf(stderr, "slock: crypt: %s\n", strerror(errno));
+				else
+					running = !!strcmp(inputhash, hash);
+				if (running) {
+					XBell(dpy, 100);
+					failure = 1;
+				}
+				explicit_bzero(&passwd, sizeof(passwd));
+				len = 0;
+				break;
+			case XK_Escape:
+				explicit_bzero(&passwd, sizeof(passwd));
+				len = 0;
+				break;
+			case XK_BackSpace:
+				if (len)
+					passwd[--len] = '\0';
+				break;
+			default:
+				if (num && !iscntrl((int)buf[0]) &&
+				    (len + num < sizeof(passwd))) {
+					memcpy(passwd + len, buf, num);
+					len += num;
+				} else if (buf[0] == '\025') { /* ctrl-u clears input */
+					explicit_bzero(&passwd, sizeof(passwd));
+					len = 0;
+				}
+				break;
+			}
+			color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
+			if (running && oldc != color) {
+				for (screen = 0; screen < nscreens; screen++) {
+					XSetWindowBackground(dpy,
+					                     locks[screen]->win,
+					                     locks[screen]->colors[color]);
+					XClearWindow(dpy, locks[screen]->win);
+				}
+				oldc = color;
+			}
+		} else if (rr->active && ev.type == rr->evbase + RRScreenChangeNotify) {
+			rre = (XRRScreenChangeNotifyEvent*)&ev;
+			for (screen = 0; screen < nscreens; screen++) {
+				if (locks[screen]->win == rre->window) {
+					if (rre->rotation == RR_Rotate_90 ||
+					    rre->rotation == RR_Rotate_270)
+						XResizeWindow(dpy, locks[screen]->win,
+						              rre->height, rre->width);
+					else
+						XResizeWindow(dpy, locks[screen]->win,
+						              rre->width, rre->height);
+					XClearWindow(dpy, locks[screen]->win);
+					break;
+				}
+			}
+		} else {
+			for (screen = 0; screen < nscreens; screen++)
+				XRaiseWindow(dpy, locks[screen]->win);
+		}
+	}
+}
+
+static struct lock *
+lockscreen(Display *dpy, struct xrandr *rr, int screen)
+{
+	char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
+	int i, ptgrab, kbgrab;
+	struct lock *lock;
+	XColor color, dummy;
+	XSetWindowAttributes wa;
+	Cursor invisible;
+
+	if (dpy == NULL || screen < 0 || !(lock = malloc(sizeof(struct lock))))
+		return NULL;
+
+	lock->screen = screen;
+	lock->root = RootWindow(dpy, lock->screen);
+
+	for (i = 0; i < NUMCOLS; i++) {
+		XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen),
+		                 colorname[i], &color, &dummy);
+		lock->colors[i] = color.pixel;
+	}
+
+	/* init */
+	wa.override_redirect = 1;
+	wa.background_pixel = lock->colors[INIT];
+	lock->win = XCreateWindow(dpy, lock->root, 0, 0,
+	                          DisplayWidth(dpy, lock->screen),
+	                          DisplayHeight(dpy, lock->screen),
+	                          0, DefaultDepth(dpy, lock->screen),
+	                          CopyFromParent,
+	                          DefaultVisual(dpy, lock->screen),
+	                          CWOverrideRedirect | CWBackPixel, &wa);
+	lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);
+	invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap,
+	                                &color, &color, 0, 0);
+	XDefineCursor(dpy, lock->win, invisible);
+
+	/* Try to grab mouse pointer *and* keyboard for 600ms, else fail the lock */
+	for (i = 0, ptgrab = kbgrab = -1; i < 6; i++) {
+		if (ptgrab != GrabSuccess) {
+			ptgrab = XGrabPointer(dpy, lock->root, False,
+			                      ButtonPressMask | ButtonReleaseMask |
+			                      PointerMotionMask, GrabModeAsync,
+			                      GrabModeAsync, None, invisible, CurrentTime);
+		}
+		if (kbgrab != GrabSuccess) {
+			kbgrab = XGrabKeyboard(dpy, lock->root, True,
+			                       GrabModeAsync, GrabModeAsync, CurrentTime);
+		}
+
+		/* input is grabbed: we can lock the screen */
+		if (ptgrab == GrabSuccess && kbgrab == GrabSuccess) {
+			XMapRaised(dpy, lock->win);
+			if (rr->active)
+				XRRSelectInput(dpy, lock->win, RRScreenChangeNotifyMask);
+
+			XSelectInput(dpy, lock->root, SubstructureNotifyMask);
+			return lock;
+		}
+
+		/* retry on AlreadyGrabbed but fail on other errors */
+		if ((ptgrab != AlreadyGrabbed && ptgrab != GrabSuccess) ||
+		    (kbgrab != AlreadyGrabbed && kbgrab != GrabSuccess))
+			break;
+
+		usleep(100000);
+	}
+
+	/* we couldn't grab all input: fail out */
+	if (ptgrab != GrabSuccess)
+		fprintf(stderr, "slock: unable to grab mouse pointer for screen %d\n",
+		        screen);
+	if (kbgrab != GrabSuccess)
+		fprintf(stderr, "slock: unable to grab keyboard for screen %d\n",
+		        screen);
+	return NULL;
+}
+
+static void
+usage(void)
+{
+	die("usage: slock [-v] [cmd [arg ...]]\n");
+}
+
+int
+main(int argc, char **argv) {
+	struct xrandr rr;
+	struct lock **locks;
+	struct passwd *pwd;
+	struct group *grp;
+	uid_t duid;
+	gid_t dgid;
+	const char *hash;
+	Display *dpy;
+	int s, nlocks, nscreens;
+
+	ARGBEGIN {
+	case 'v':
+		puts("slock-"VERSION);
+		return 0;
+	default:
+		usage();
+	} ARGEND
+
+	/* validate drop-user and -group */
+	errno = 0;
+	if (!(pwd = getpwnam(user)))
+		die("slock: getpwnam %s: %s\n", user,
+		    errno ? strerror(errno) : "user entry not found");
+	duid = pwd->pw_uid;
+	errno = 0;
+	if (!(grp = getgrnam(group)))
+		die("slock: getgrnam %s: %s\n", group,
+		    errno ? strerror(errno) : "group entry not found");
+	dgid = grp->gr_gid;
+
+#ifdef __linux__
+	dontkillme();
+#endif
+
+	hash = gethash();
+	errno = 0;
+	if (!crypt("", hash))
+		die("slock: crypt: %s\n", strerror(errno));
+
+	if (!(dpy = XOpenDisplay(NULL)))
+		die("slock: cannot open display\n");
+
+	/* drop privileges */
+	if (setgroups(0, NULL) < 0)
+		die("slock: setgroups: %s\n", strerror(errno));
+	if (setgid(dgid) < 0)
+		die("slock: setgid: %s\n", strerror(errno));
+	if (setuid(duid) < 0)
+		die("slock: setuid: %s\n", strerror(errno));
+
+	/* check for Xrandr support */
+	rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
+
+	/* get number of screens in display "dpy" and blank them */
+	nscreens = ScreenCount(dpy);
+	if (!(locks = calloc(nscreens, sizeof(struct lock *))))
+		die("slock: out of memory\n");
+	for (nlocks = 0, s = 0; s < nscreens; s++) {
+		if ((locks[s] = lockscreen(dpy, &rr, s)) != NULL)
+			nlocks++;
+		else
+			break;
+	}
+	XSync(dpy, 0);
+
+	/* did we manage to lock everything? */
+	if (nlocks != nscreens)
+		return 1;
+
+	/* run post-lock command */
+	if (argc > 0) {
+		pid_t pid;
+		extern char **environ;
+		int err = posix_spawnp(&pid, argv[0], NULL, NULL, argv, environ);
+		if (err) {
+			die("slock: failed to execute post-lock command: %s: %s\n",
+			    argv[0], strerror(err));
+		}
+	}
+
+	/* everything is now blank. Wait for the correct password */
+	readpw(dpy, &rr, locks, nscreens, hash);
+
+	return 0;
+}

slock/slock.c.orig

@@ -6,7 +6,9 @@
 
 #include <ctype.h>
 #include <errno.h>
+#include <fcntl.h>
 #include <grp.h>
+#include <limits.h>
 #include <pwd.h>
 #include <stdarg.h>
 #include <stdlib.h>
@@ -19,16 +21,25 @@
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
+#include <X11/XF86keysym.h>
+#include <security/pam_appl.h>
+#include <security/pam_misc.h>
+#include <Imlib2.h>
 
 #include "arg.h"
 #include "util.h"
 
 char *argv0;
 
+static int pam_conv(int num_msg, const struct pam_message **msg, struct pam_response **resp, void *appdata_ptr);
+struct pam_conv pamc = {pam_conv, NULL};
+char passwd[256];
+
 enum {
 	INIT,
 	INPUT,
 	FAILED,
+    PAM,
 	NUMCOLS
 };
 
@@ -36,6 +47,7 @@ struct lock {
 	int screen;
 	Window root, win;
 	Pixmap pmap;
+	Pixmap bgmap;
 	unsigned long colors[NUMCOLS];
 };
 
@@ -47,6 +59,8 @@ struct xrandr {
 
 #include "config.h"
 
+Imlib_Image image;
+
 static void
 die(const char *errstr, ...)
 {
@@ -58,8 +72,32 @@ die(const char *errstr, ...)
 	exit(1);
 }
 
+static int
+pam_conv(int num_msg, const struct pam_message **msg,
+		struct pam_response **resp, void *appdata_ptr)
+{
+	int retval = PAM_CONV_ERR;
+	for(int i=0; i<num_msg; i++) {
+		if (msg[i]->msg_style == PAM_PROMPT_ECHO_OFF &&
+				strncmp(msg[i]->msg, "Password: ", 10) == 0) {
+			struct pam_response *resp_msg = malloc(sizeof(struct pam_response));
+			if (!resp_msg)
+				die("malloc failed\n");
+			char *password = malloc(strlen(passwd) + 1);
+			if (!password)
+				die("malloc failed\n");
+			memset(password, 0, strlen(passwd) + 1);
+			strcpy(password, passwd);
+			resp_msg->resp_retcode = 0;
+			resp_msg->resp = password;
+			resp[i] = resp_msg;
+			retval = PAM_SUCCESS;
+		}
+	}
+	return retval;
+}
+
 #ifdef __linux__
-#include <fcntl.h>
 #include <linux/oom.h>
 
 static void
@@ -122,6 +160,8 @@ gethash(void)
 	}
 #endif /* HAVE_SHADOW_H */
 
+	/* pam, store user name */
+	hash = pw->pw_name;
 	return hash;
 }
 
@@ -130,11 +170,12 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
        const char *hash)
 {
 	XRRScreenChangeNotifyEvent *rre;
-	char buf[32], passwd[256], *inputhash;
-	int num, screen, running, failure, oldc;
+	char buf[32];
+	int num, screen, running, failure, oldc, retval;
 	unsigned int len, color;
 	KeySym ksym;
 	XEvent ev;
+	pam_handle_t *pamh;
 
 	len = 0;
 	running = 1;
@@ -158,13 +199,37 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 			    IsPrivateKeypadKey(ksym))
 				continue;
 			switch (ksym) {
+            case XF86XK_AudioMute:
+            case XF86XK_AudioRaiseVolume:
+            case XF86XK_AudioLowerVolume:
+            case XF86XK_AudioMicMute:
+            case XF86XK_MonBrightnessUp:
+            case XF86XK_MonBrightnessDown:
+                XSendEvent(dpy, DefaultRootWindow(dpy), True, KeyPressMask, &ev);
+                break;
 			case XK_Return:
 				passwd[len] = '\0';
 				errno = 0;
-				if (!(inputhash = crypt(passwd, hash)))
-					fprintf(stderr, "slock: crypt: %s\n", strerror(errno));
+				retval = pam_start(pam_service, hash, &pamc, &pamh);
+				color = PAM;
+				for (screen = 0; screen < nscreens; screen++) {
+					XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[color]);
+					XClearWindow(dpy, locks[screen]->win);
+					XRaiseWindow(dpy, locks[screen]->win);
+				}
+				XSync(dpy, False);
+
+				if (retval == PAM_SUCCESS)
+					retval = pam_authenticate(pamh, 0);
+				if (retval == PAM_SUCCESS)
+					retval = pam_acct_mgmt(pamh, 0);
+
+				running = 1;
+				if (retval == PAM_SUCCESS)
+					running = 0;
 				else
-					running = !!strcmp(inputhash, hash);
+					fprintf(stderr, "slock: %s\n", pam_strerror(pamh, retval));
+				pam_end(pamh, retval);
 				if (running) {
 					XBell(dpy, 100);
 					failure = 1;
@@ -194,9 +259,10 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 			color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
 			if (running && oldc != color) {
 				for (screen = 0; screen < nscreens; screen++) {
-					XSetWindowBackground(dpy,
-					                     locks[screen]->win,
-					                     locks[screen]->colors[color]);
+                                        if (locks[screen]->bgmap)
+                                                XSetWindowBackgroundPixmap(dpy, locks[screen]->win, locks[screen]->bgmap);
+                                        else
+                                                XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]);
 					XClearWindow(dpy, locks[screen]->win);
 				}
 				oldc = color;
@@ -239,6 +305,17 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	lock->screen = screen;
 	lock->root = RootWindow(dpy, lock->screen);
 
+        if(image)
+        {
+            lock->bgmap = XCreatePixmap(dpy, lock->root, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), DefaultDepth(dpy, lock->screen));
+            imlib_context_set_display(dpy);
+            imlib_context_set_visual(DefaultVisual(dpy, lock->screen));
+            imlib_context_set_colormap(DefaultColormap(dpy, lock->screen));
+            imlib_context_set_drawable(lock->bgmap);
+            imlib_render_image_on_drawable(0, 0);
+            imlib_free_image();
+        }
+
 	for (i = 0; i < NUMCOLS; i++) {
 		XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen),
 		                 colorname[i], &color, &dummy);
@@ -255,6 +332,8 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	                          CopyFromParent,
 	                          DefaultVisual(dpy, lock->screen),
 	                          CWOverrideRedirect | CWBackPixel, &wa);
+        if(lock->bgmap)
+          XSetWindowBackgroundPixmap(dpy, lock->win, lock->bgmap);
 	lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);
 	invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap,
 	                                &color, &color, 0, 0);
@@ -301,6 +380,28 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	return NULL;
 }
 
+static int
+get_xss_sleep_lock_fd(void)
+{
+	char *env_str, *end;
+	long env_val;
+
+	env_str = getenv("XSS_SLEEP_LOCK_FD");
+	if (!env_str || !*env_str)
+		return -1;
+
+	errno = 0;
+	env_val = strtol(env_str, &end, 10);
+	if (errno ||
+	    *end ||
+	    (env_val < 0 || env_val > INT_MAX)) {
+		fprintf(stderr, "slock: strtol $XSS_SLEEP_LOCK_FD: %s\n",
+		        errno ? strerror(errno) : "invalid value");
+		return -1;
+	}
+	return (int)env_val;
+}
+
 static void
 usage(void)
 {
@@ -318,6 +419,7 @@ main(int argc, char **argv) {
 	const char *hash;
 	Display *dpy;
 	int s, nlocks, nscreens;
+	int lockfd;
 
 	ARGBEGIN {
 	case 'v':
@@ -327,6 +429,18 @@ main(int argc, char **argv) {
 		usage();
 	} ARGEND
 
+	lockfd = get_xss_sleep_lock_fd();
+	if (lockfd >= 0) {
+		int flags = fcntl(lockfd, F_GETFD);
+		if (flags < 0) {
+			fprintf(stderr, "slock: fcntl $XSS_SLEEP_LOCK_FD F_GETFD: %s\n",
+			        strerror(errno));
+		} else if (fcntl(lockfd, F_SETFD, flags | FD_CLOEXEC) == -1) {
+			fprintf(stderr, "slock: fcntl $XSS_SLEEP_LOCK_FD F_SETFD: %s\n",
+			        strerror(errno));
+		}
+	}
+
 	/* validate drop-user and -group */
 	errno = 0;
 	if (!(pwd = getpwnam(user)))
@@ -343,10 +457,9 @@ main(int argc, char **argv) {
 	dontkillme();
 #endif
 
+	/* the contents of hash are used to transport the current user name */
 	hash = gethash();
 	errno = 0;
-	if (!crypt("", hash))
-		die("slock: crypt: %s\n", strerror(errno));
 
 	if (!(dpy = XOpenDisplay(NULL)))
 		die("slock: cannot open display\n");
@@ -359,6 +472,32 @@ main(int argc, char **argv) {
 	if (setuid(duid) < 0)
 		die("slock: setuid: %s\n", strerror(errno));
 
+	/* Load picture */
+        Imlib_Image buffer = imlib_load_image(background_image);
+	imlib_context_set_image(buffer);
+        int background_image_width = imlib_image_get_width();
+        int background_image_height = imlib_image_get_height();
+
+        /* Create an image to be rendered */
+	Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
+	image = imlib_create_image(scr->width, scr->height);
+        imlib_context_set_image(image);
+
+        /* Fill the image for every X monitor */
+        XRRMonitorInfo	*monitors;
+        int number_of_monitors;
+        monitors = XRRGetMonitors(dpy, RootWindow(dpy, XScreenNumberOfScreen(scr)), True, &number_of_monitors);
+
+        int i;
+        for (i = 0; i < number_of_monitors; i++) {
+            imlib_blend_image_onto_image(buffer, 0, 0, 0, background_image_width, background_image_height, monitors[i].x, monitors[i].y, monitors[i].width, monitors[i].height);
+        }
+
+        /* Clean up */
+        imlib_context_set_image(buffer);
+        imlib_free_image();
+        imlib_context_set_image(image);
+
 	/* check for Xrandr support */
 	rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
 
@@ -378,6 +517,9 @@ main(int argc, char **argv) {
 	if (nlocks != nscreens)
 		return 1;
 
+	if (lockfd >= 0 && close(lockfd) < 0)
+		fprintf(stderr, "slock: close $XSS_SLEEP_LOCK_FD: %s\n", strerror(errno));
+
 	/* run post-lock command */
 	if (argc > 0) {
 		pid_t pid;

slock/slock.c.rej

@@ -1,11 +1,10 @@
 --- slock.c
 +++ slock.c
-@@ -186,7 +186,7 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
- 			case XF86XK_AudioStop:
- 			case XF86XK_AudioPrev:
- 			case XF86XK_AudioNext:
--				XSendEvent(dpy, locks[0]->root, True, KeyPressMask, &ev);
-+				XSendEvent(dpy, DefaultRootWindow(dpy), True, KeyPressMask, &ev);
- 				break;
- 			case XK_Return:
- 				passwd[len] = '\0';
+@@ -307,6 +308,7 @@ main(int argc, char **argv) {
+ 	const char *hash;
+ 	Display *dpy;
+ 	int s, nlocks, nscreens;
++	CARD16 standby, suspend, off;
+ 
+ 	ARGBEGIN {
+ 	case 'v':