changed sudo commands

.gitignore

@@ -0,0 +1,3 @@
+slock
+*.o
+config.h

Makefile

@@ -36,7 +36,7 @@ dist: clean
 	@echo creating dist tarball
 	@mkdir -p slock-${VERSION}
 	@cp -R LICENSE Makefile README slock.1 config.mk \
-		${SRC} explicit_bzero.c config.def.h arg.h util.h slock-${VERSION}
+		${SRC} config.def.h arg.h util.h slock-${VERSION}
 	@tar -cf slock-${VERSION}.tar slock-${VERSION}
 	@gzip slock-${VERSION}.tar
 	@rm -rf slock-${VERSION}

README.md

@@ -0,0 +1,20 @@
+# slock
+
+This is my patched version of slock. The base version is directly from suckless.org.
+
+## Patches
+
+The list below shows the currently applied patches to the master branch.
+
+- slock-background-image-20220318-1c5a538.diff (shows a background image in locked state)
+- slock-capscolor-20220921-35633d4.diff (displays a separate color if caps is set)
+- slock-dwmlogo-20210324.diff (adds dwm logo on lock screen)
+- slock-git-20161012-control-clear.diff (doesnt turn logo red when pressing control keys)
+- slock-secret-password-1.4.diff (modified) (can give additional passwords that run commands)
+
+## Installation
+
+The most basic way is to clone the repository and then invoke make.
+
+- `git clone https://github.com/tiyn/slock`
+- `make clean install`

config.def.h

@@ -1,12 +1,54 @@
 /* user and group to drop privileges to */
-static const char *user  = "nobody";
+static const char *user  = "user";
-static const char *group = "nogroup";
+static const char *group = "nobody";
 
 static const char *colorname[NUMCOLS] = {
-	[INIT] =   "black",     /* after initialization */
+	[INIT] =   "#2d2d2d",     /* after initialization */
 	[INPUT] =  "#005577",   /* during input */
-	[FAILED] = "#CC3333",   /* wrong password */
+	[FAILED] = "#cc3333",   /* wrong password */
+	[CAPS] = "#ff0000",         /* CapsLock on */
 };
 
 /* 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 = "/home/user/.local/share/lock";
+/* insert grid pattern with scale 1:1, the size can be changed with logosize */
+static const int logosize = 40;
+static const int logow = 10;	/* grid width and height for right center alignment*/
+static const int logoh = 15;
+
+static XRectangle rectangles[12] = {
+	/* x	y	w	h */
+	{ 0,	0,	1,	3 },
+	{ 0,	7,	4,	2 },
+	{ 1,	0,	1,	4 },
+	{ 2,	2,	1,	3 },
+	{ 3,	3,	1,	3 },
+	{ 4,	0,	2,	2 },
+	{ 4,	4,	2,	11 },
+	{ 6,	3,	1,	3 },
+	{ 6,	7,	4,	2 },
+	{ 7,	2,	1,	3 },
+	{ 8,	0,	1,	4 },
+	{ 9,	0,	1,	3 },
+};
+
+/* allow control key to trigger fail on clear */
+static const int controlkeyclear = 1;
+
+/* struct for secret passwords and commands */
+struct secretpass {
+  char const *pass;
+  char const *command;
+};
+
+/* list of secret passwords and their commands */
+static const struct secretpass scom[1] = {
+/*	 Password				command */
+  {"shutdown",           "sudo shutdown -h now"},
+};
+
+/* length of entries in scom */
+static const int entrylen = 1;

config.mk

@@ -1,5 +1,5 @@
 # slock version
-VERSION = 1.4
+VERSION = 1.5
 
 # Customize below to fit your system
 
@@ -10,12 +10,20 @@ MANPREFIX = ${PREFIX}/share/man
 X11INC = /usr/X11R6/include
 X11LIB = /usr/X11R6/lib
 
+# Xinerama, comment if you don't want it
+XINERAMALIBS  = -lXinerama
+XINERAMAFLAGS = -DXINERAMA
+
+# freetype
+FREETYPELIBS = -lXft
+FREETYPEINC = /usr/include/freetype2
+
 # includes and libs
-INCS = -I. -I/usr/include -I${X11INC}
+INCS = -I. -I/usr/include -I${X11INC} -I${FREETYPEINC}
-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
+LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS} -lXext -lXrandr -lImlib2
 
 # flags
-CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H ${XINERAMAFLAGS}
 CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
 LDFLAGS = -s ${LIBS}
 COMPATSRC = explicit_bzero.c

slock-background-image-20220318-1c5a538.diff

@@ -0,0 +1,149 @@
+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-capscolor-20220921-35633d4.diff

@@ -0,0 +1,88 @@
+From da1721b1b4bb0aa8f94537ddd2a3eada1df00a30 Mon Sep 17 00:00:00 2001
+From: Max Schillinger <maxschillinger@web.de>
+Date: Wed, 21 Sep 2022 19:56:58 +0200
+Subject: [PATCH] Update capscolor patch to match the latest slock commit
+ (35633d4)
+
+---
+ config.def.h |  1 +
+ slock.c      | 15 ++++++++++++---
+ 2 files changed, 13 insertions(+), 3 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 9855e21..6288856 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -6,6 +6,7 @@ static const char *colorname[NUMCOLS] = {
+ 	[INIT] =   "black",     /* after initialization */
+ 	[INPUT] =  "#005577",   /* during input */
+ 	[FAILED] = "#CC3333",   /* wrong password */
++	[CAPS] = "red",         /* CapsLock on */
+ };
+ 
+ /* treat a cleared input like a wrong password (color) */
+diff --git a/slock.c b/slock.c
+index 5ae738c..5f4fb7a 100644
+--- a/slock.c
++++ b/slock.c
+@@ -18,6 +18,7 @@
+ #include <X11/keysym.h>
+ #include <X11/Xlib.h>
+ #include <X11/Xutil.h>
++#include <X11/XKBlib.h>
+ 
+ #include "arg.h"
+ #include "util.h"
+@@ -28,6 +29,7 @@ enum {
+ 	INIT,
+ 	INPUT,
+ 	FAILED,
++	CAPS,
+ 	NUMCOLS
+ };
+ 
+@@ -130,16 +132,20 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ {
+ 	XRRScreenChangeNotifyEvent *rre;
+ 	char buf[32], passwd[256], *inputhash;
+-	int num, screen, running, failure, oldc;
+-	unsigned int len, color;
++	int caps, num, screen, running, failure, oldc;
++	unsigned int len, color, indicators;
+ 	KeySym ksym;
+ 	XEvent ev;
+ 
+ 	len = 0;
++	caps = 0;
+ 	running = 1;
+ 	failure = 0;
+ 	oldc = INIT;
+ 
++	if (!XkbGetIndicatorState(dpy, XkbUseCoreKbd, &indicators))
++		caps = indicators & 1;
++
+ 	while (running && !XNextEvent(dpy, &ev)) {
+ 		if (ev.type == KeyPress) {
+ 			explicit_bzero(&buf, sizeof(buf));
+@@ -179,6 +185,9 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ 				if (len)
+ 					passwd[--len] = '\0';
+ 				break;
++			case XK_Caps_Lock:
++				caps = !caps;
++				break;
+ 			default:
+ 				if (num && !iscntrl((int)buf[0]) &&
+ 				    (len + num < sizeof(passwd))) {
+@@ -187,7 +196,7 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ 				}
+ 				break;
+ 			}
+-			color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
++			color = len ? (caps ? CAPS : INPUT) : (failure || failonclear ? FAILED : INIT);
+ 			if (running && oldc != color) {
+ 				for (screen = 0; screen < nscreens; screen++) {
+ 					XSetWindowBackground(dpy,
+-- 
+2.37.3
+

slock-dwmlogo-20210324.diff

@@ -0,0 +1,246 @@
+diff --git a/config.def.h b/config.def.h
+index 9855e21..0940fb8 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -3,10 +3,30 @@ static const char *user  = "nobody";
+ static const char *group = "nogroup";
+ 
+ static const char *colorname[NUMCOLS] = {
+-	[INIT] =   "black",     /* after initialization */
++	[BACKGROUND] =   "black",     /* after initialization */
++	[INIT] =   "#2d2d2d",     /* after initialization */
+ 	[INPUT] =  "#005577",   /* during input */
+ 	[FAILED] = "#CC3333",   /* wrong password */
+ };
+ 
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/* insert grid pattern with scale 1:1, the size can be changed with logosize */
++static const int logosize = 75;
++static const int logow = 12;	/* grid width and height for right center alignment*/
++static const int logoh = 6;
++
++static XRectangle rectangles[9] = {
++	/* x	y	w	h */
++	{ 0,	3,	1,	3 },
++	{ 1,	3,	2,	1 },
++	{ 0,	5,	8,	1 },
++	{ 3,	0,	1,	5 },
++	{ 5,	3,	1,	2 },
++	{ 7,	3,	1,	2 },
++	{ 8,	3,	4,	1 },
++	{ 9,	4,	1,	2 },
++	{ 11,	4,	1,	2 },
++
++};
+diff --git a/config.mk b/config.mk
+index 74429ae..08356e8 100644
+--- a/config.mk
++++ b/config.mk
+@@ -10,12 +10,20 @@ MANPREFIX = ${PREFIX}/share/man
+ X11INC = /usr/X11R6/include
+ X11LIB = /usr/X11R6/lib
+ 
++# Xinerama, comment if you don't want it
++XINERAMALIBS  = -lXinerama
++XINERAMAFLAGS = -DXINERAMA
++
++# freetype
++FREETYPELIBS = -lXft
++FREETYPEINC = /usr/include/freetype2
++
+ # includes and libs
+-INCS = -I. -I/usr/include -I${X11INC}
+-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
++INCS = -I. -I/usr/include -I${X11INC} -I${FREETYPEINC}
++LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS} -lXext -lXrandr
+ 
+ # flags
+-CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
++CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H ${XINERAMAFLAGS}
+ CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
+ LDFLAGS = -s ${LIBS}
+ COMPATSRC = explicit_bzero.c
+diff --git a/slock.c b/slock.c
+index 5ae738c..3ea9b7f 100644
+--- a/slock.c
++++ b/slock.c
+@@ -1,5 +1,6 @@
+ /* See LICENSE file for license details. */
+-#define _XOPEN_SOURCE 500
++#define _XOPEN_SOURCE   500
++#define LENGTH(X)       (sizeof X / sizeof X[0])
+ #if HAVE_SHADOW_H
+ #include <shadow.h>
+ #endif
+@@ -15,9 +16,13 @@
+ #include <unistd.h>
+ #include <sys/types.h>
+ #include <X11/extensions/Xrandr.h>
++#ifdef XINERAMA
++#include <X11/extensions/Xinerama.h>
++#endif
+ #include <X11/keysym.h>
+ #include <X11/Xlib.h>
+ #include <X11/Xutil.h>
++#include <X11/Xft/Xft.h>
+ 
+ #include "arg.h"
+ #include "util.h"
+@@ -25,17 +30,25 @@
+ char *argv0;
+ 
+ enum {
++	BACKGROUND,
+ 	INIT,
+ 	INPUT,
+ 	FAILED,
+ 	NUMCOLS
+ };
+ 
++#include "config.h"
++
+ struct lock {
+ 	int screen;
+ 	Window root, win;
+ 	Pixmap pmap;
+ 	unsigned long colors[NUMCOLS];
++	unsigned int x, y;
++	unsigned int xoff, yoff, mw, mh;
++	Drawable drawable;
++	GC gc;
++	XRectangle rectangles[LENGTH(rectangles)];
+ };
+ 
+ struct xrandr {
+@@ -44,8 +57,6 @@ struct xrandr {
+ 	int errbase;
+ };
+ 
+-#include "config.h"
+-
+ static void
+ die(const char *errstr, ...)
+ {
+@@ -124,6 +135,32 @@ gethash(void)
+ 	return hash;
+ }
+ 
++static void
++resizerectangles(struct lock *lock)
++{
++	int i;
++
++	for (i = 0; i < LENGTH(rectangles); i++){
++		lock->rectangles[i].x = (rectangles[i].x * logosize)
++                                + lock->xoff + ((lock->mw) / 2) - (logow / 2 * logosize);
++		lock->rectangles[i].y = (rectangles[i].y * logosize)
++                                + lock->yoff + ((lock->mh) / 2) - (logoh / 2 * logosize);
++		lock->rectangles[i].width = rectangles[i].width * logosize;
++		lock->rectangles[i].height = rectangles[i].height * logosize;
++	}
++}
++
++static void
++drawlogo(Display *dpy, struct lock *lock, int color)
++{
++	XSetForeground(dpy, lock->gc, lock->colors[BACKGROUND]);
++	XFillRectangle(dpy, lock->drawable, lock->gc, 0, 0, lock->x, lock->y);
++	XSetForeground(dpy, lock->gc, lock->colors[color]);
++	XFillRectangles(dpy, lock->drawable, lock->gc, lock->rectangles, LENGTH(rectangles));
++	XCopyArea(dpy, lock->drawable, lock->win, lock->gc, 0, 0, lock->x, lock->y, 0, 0);
++	XSync(dpy, False);
++}
++
+ static void
+ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+        const char *hash)
+@@ -190,10 +227,7 @@ 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]);
+-					XClearWindow(dpy, locks[screen]->win);
++					drawlogo(dpy, locks[screen], color);
+ 				}
+ 				oldc = color;
+ 			}
+@@ -228,6 +262,10 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ 	XColor color, dummy;
+ 	XSetWindowAttributes wa;
+ 	Cursor invisible;
++#ifdef XINERAMA
++	XineramaScreenInfo *info;
++	int n;
++#endif
+ 
+ 	if (dpy == NULL || screen < 0 || !(lock = malloc(sizeof(struct lock))))
+ 		return NULL;
+@@ -241,12 +279,31 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ 		lock->colors[i] = color.pixel;
+ 	}
+ 
++	lock->x = DisplayWidth(dpy, lock->screen);
++	lock->y = DisplayHeight(dpy, lock->screen);
++#ifdef XINERAMA
++	if ((info = XineramaQueryScreens(dpy, &n))) {
++		lock->xoff = info[0].x_org;
++		lock->yoff = info[0].y_org;
++		lock->mw = info[0].width;
++		lock->mh = info[0].height;
++	} else
++#endif
++	{
++		lock->xoff = lock->yoff = 0;
++		lock->mw = lock->x;
++		lock->mh = lock->y;
++	}
++	lock->drawable = XCreatePixmap(dpy, lock->root,
++            lock->x, lock->y, DefaultDepth(dpy, screen));
++	lock->gc = XCreateGC(dpy, lock->root, 0, NULL);
++	XSetLineAttributes(dpy, lock->gc, 1, LineSolid, CapButt, JoinMiter);
++
+ 	/* init */
+ 	wa.override_redirect = 1;
+-	wa.background_pixel = lock->colors[INIT];
++	wa.background_pixel = lock->colors[BACKGROUND];
+ 	lock->win = XCreateWindow(dpy, lock->root, 0, 0,
+-	                          DisplayWidth(dpy, lock->screen),
+-	                          DisplayHeight(dpy, lock->screen),
++	                          lock->x, lock->y,
+ 	                          0, DefaultDepth(dpy, lock->screen),
+ 	                          CopyFromParent,
+ 	                          DefaultVisual(dpy, lock->screen),
+@@ -256,6 +313,8 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ 	                                &color, &color, 0, 0);
+ 	XDefineCursor(dpy, lock->win, invisible);
+ 
++	resizerectangles(lock);
++
+ 	/* 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) {
+@@ -276,6 +335,7 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ 				XRRSelectInput(dpy, lock->win, RRScreenChangeNotifyMask);
+ 
+ 			XSelectInput(dpy, lock->root, SubstructureNotifyMask);
++			drawlogo(dpy, lock, INIT);
+ 			return lock;
+ 		}
+ 
+@@ -391,5 +451,12 @@ main(int argc, char **argv) {
+ 	/* everything is now blank. Wait for the correct password */
+ 	readpw(dpy, &rr, locks, nscreens, hash);
+ 
++	for (nlocks = 0, s = 0; s < nscreens; s++) {
++		XFreePixmap(dpy, locks[s]->drawable);
++		XFreeGC(dpy, locks[s]->gc);
++	}
++
++	XSync(dpy, 0);
++	XCloseDisplay(dpy);
+ 	return 0;
+ }

slock-git-20161012-control-clear.diff

@@ -0,0 +1,27 @@
+diff --git a/config.def.h b/config.def.h
+index 6fba2b6..933152b 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 */
+ static const int failonclear = 1;
++
++/* allow control key to trigger fail on clear */
++static const int controlkeyclear = 0;
+diff --git a/slock.c b/slock.c
+index 4d7f06f..15552ef 100644
+--- a/slock.c
++++ b/slock.c
+@@ -180,8 +180,9 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ 					passwd[len--] = '\0';
+ 				break;
+ 			default:
+-				if (num && !iscntrl((int)buf[0]) &&
+-				    (len + num < sizeof(passwd))) {
++				if (controlkeyclear && iscntrl((int)buf[0]))
++					continue;
++				if (num && (len + num < sizeof(passwd))) {
+ 					memcpy(passwd + len, buf, num);
+ 					len += num;
+ 				}

slock-secret-password-1.4.diff

@@ -0,0 +1,33 @@
+diff --git a/config.def.h b/config.def.h
+index 9855e21..989ca08 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -10,3 +10,10 @@ static const char *colorname[NUMCOLS] = {
+ 
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/* length of entires in scom  */
+s
++static const int entrylen = 1;
+
++
++static const secretpass scom[entrylen] = {
++/*	 Password				command */
++	{ "shutdown",           "doas poweroff" },
+};
+diff --git a/slock.c b/slock.c
+index d2f0886..6a96a2d 100644
+--- a/slock.c
++++ b/slock.c
+@@ -160,6 +160,13 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ 			case XK_Return:
+ 				passwd[len] = '\0';
+ 				errno = 0;
++
++				for (int i = 0; i < entrylen; i++){
++					if (strcmp(scom[i].pass, passwd) == 0){
++						system(scom[i].command);
++					}
++				}
++

slock.c

@@ -1,5 +1,6 @@
 /* See LICENSE file for license details. */
 #define _XOPEN_SOURCE   500
+#define LENGTH(X)       (sizeof X / sizeof X[0])
 #if HAVE_SHADOW_H
 #include <shadow.h>
 #endif
@@ -15,9 +16,15 @@
 #include <unistd.h>
 #include <sys/types.h>
 #include <X11/extensions/Xrandr.h>
+#ifdef XINERAMA
+#include <X11/extensions/Xinerama.h>
+#endif
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
+#include <Imlib2.h>
+#include <X11/Xft/Xft.h>
+#include <X11/XKBlib.h>
 
 #include "arg.h"
 #include "util.h"
@@ -28,14 +35,23 @@ enum {
 	INIT,
 	INPUT,
 	FAILED,
+	CAPS,
 	NUMCOLS
 };
 
+#include "config.h"
+
 struct lock {
 	int screen;
 	Window root, win;
 	Pixmap pmap;
+	Pixmap bgmap;
 	unsigned long colors[NUMCOLS];
+	unsigned int x, y;
+	unsigned int xoff, yoff, mw, mh;
+	Drawable drawable;
+	GC gc;
+	XRectangle rectangles[LENGTH(rectangles)];
 };
 
 struct xrandr {
@@ -44,8 +60,7 @@ struct xrandr {
 	int errbase;
 };
 
-#include "config.h"
+Imlib_Image image;
-
 static void
 die(const char *errstr, ...)
 {
@@ -124,22 +139,49 @@ gethash(void)
 	return hash;
 }
 
+static void
+resizerectangles(struct lock *lock)
+{
+	int i;
+
+	for (i = 0; i < LENGTH(rectangles); i++){
+		lock->rectangles[i].x = (rectangles[i].x * logosize)
+                                + lock->xoff + ((lock->mw) / 2) - (logow / 2 * logosize);
+		lock->rectangles[i].y = (rectangles[i].y * logosize)
+                                + lock->yoff + ((lock->mh) / 2) - (logoh / 2 * logosize);
+		lock->rectangles[i].width = rectangles[i].width * logosize;
+		lock->rectangles[i].height = rectangles[i].height * logosize;
+	}
+}
+
+static void
+drawlogo(Display *dpy, struct lock *lock, int color)
+{
+	XSetForeground(dpy, lock->gc, lock->colors[color]);
+	XFillRectangles(dpy, lock->win, lock->gc, lock->rectangles, LENGTH(rectangles));
+	XSync(dpy, False);
+}
+
 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;
+	int caps, num, screen, running, failure, oldc;
-	unsigned int len, color;
+	unsigned int len, color, indicators;
 	KeySym ksym;
 	XEvent ev;
 
 	len = 0;
+	caps = 0;
 	running = 1;
 	failure = 0;
 	oldc = INIT;
 
+	if (!XkbGetIndicatorState(dpy, XkbUseCoreKbd, &indicators))
+		caps = indicators & 1;
+
 	while (running && !XNextEvent(dpy, &ev)) {
 		if (ev.type == KeyPress) {
 			explicit_bzero(&buf, sizeof(buf));
@@ -160,6 +202,12 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 			case XK_Return:
 				passwd[len] = '\0';
 				errno = 0;
+				for (int i = 0; i < entrylen; i++){
+				    if (strcmp(scom[i].pass, passwd) == 0){
+				    	system(scom[i].command);
+				    }
+                                }
+
 				if (!(inputhash = crypt(passwd, hash)))
 					fprintf(stderr, "slock: crypt: %s\n", strerror(errno));
 				else
@@ -179,21 +227,27 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 				if (len)
 					passwd[--len] = '\0';
 				break;
+			case XK_Caps_Lock:
+				caps = !caps;
+				break;
 			default:
-				if (num && !iscntrl((int)buf[0]) &&
+				if (controlkeyclear && iscntrl((int)buf[0]))
-				    (len + num < sizeof(passwd))) {
+					continue;
+				if (num && (len + num < sizeof(passwd))) {
 					memcpy(passwd + len, buf, num);
 					len += num;
 				}
 				break;
 			}
-			color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
+			color = len ? (caps ? CAPS : INPUT) : (failure || failonclear ? FAILED : INIT);
 			if (running && oldc != color) {
 				for (screen = 0; screen < nscreens; screen++) {
-					XSetWindowBackground(dpy,
+                                        if (locks[screen]->bgmap)
-					                     locks[screen]->win,
+                                                XSetWindowBackgroundPixmap(dpy, locks[screen]->win, locks[screen]->bgmap);
-					                     locks[screen]->colors[color]);
+                                        else
+                                                XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]);
 					XClearWindow(dpy, locks[screen]->win);
+					drawlogo(dpy, locks[screen], color);
 				}
 				oldc = color;
 			}
@@ -228,6 +282,10 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	XColor color, dummy;
 	XSetWindowAttributes wa;
 	Cursor invisible;
+#ifdef XINERAMA
+	XineramaScreenInfo *info;
+	int n;
+#endif
 
 	if (dpy == NULL || screen < 0 || !(lock = malloc(sizeof(struct lock))))
 		return NULL;
@@ -235,27 +293,61 @@ 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);
 		lock->colors[i] = color.pixel;
 	}
 
+	lock->x = DisplayWidth(dpy, lock->screen);
+	lock->y = DisplayHeight(dpy, lock->screen);
+#ifdef XINERAMA
+	if ((info = XineramaQueryScreens(dpy, &n))) {
+		lock->xoff = info[0].x_org;
+		lock->yoff = info[0].y_org;
+		lock->mw = info[0].width;
+		lock->mh = info[0].height;
+	} else
+#endif
+	{
+		lock->xoff = lock->yoff = 0;
+		lock->mw = lock->x;
+		lock->mh = lock->y;
+	}
+	lock->drawable = XCreatePixmap(dpy, lock->root,
+            lock->x, lock->y, DefaultDepth(dpy, screen));
+	lock->gc = XCreateGC(dpy, lock->root, 0, NULL);
+	XSetLineAttributes(dpy, lock->gc, 1, LineSolid, CapButt, JoinMiter);
+
 	/* init */
 	wa.override_redirect = 1;
 	wa.background_pixel = lock->colors[INIT];
 	lock->win = XCreateWindow(dpy, lock->root, 0, 0,
-	                          DisplayWidth(dpy, lock->screen),
+	                          lock->x, lock->y,
-	                          DisplayHeight(dpy, lock->screen),
 	                          0, DefaultDepth(dpy, lock->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);
 	XDefineCursor(dpy, lock->win, invisible);
 
+	resizerectangles(lock);
+
 	/* 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) {
@@ -276,6 +368,7 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 				XRRSelectInput(dpy, lock->win, RRScreenChangeNotifyMask);
 
 			XSelectInput(dpy, lock->root, SubstructureNotifyMask);
+			drawlogo(dpy, lock, INIT);
 			return lock;
 		}
 
@@ -355,6 +448,32 @@ 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);
 
@@ -391,5 +510,12 @@ main(int argc, char **argv) {
 	/* everything is now blank. Wait for the correct password */
 	readpw(dpy, &rr, locks, nscreens, hash);
 
+	for (nlocks = 0, s = 0; s < nscreens; s++) {
+		XFreePixmap(dpy, locks[s]->drawable);
+		XFreeGC(dpy, locks[s]->gc);
+	}
+
+	XSync(dpy, 0);
+	XCloseDisplay(dpy);
 	return 0;
 }