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This commit is contained in:
Tyler Perkins 2023-02-09 19:24:49 -05:00
parent 4f045545a2
commit f60e20818e
11 changed files with 1122 additions and 5 deletions
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24
config.def.h
View File

@ -10,3 +10,27 @@ static const char *colorname[NUMCOLS] = {
/* treat a cleared input like a wrong password (color) */
static const int failonclear = 1;
/* length of entires in scom */
#define entrylen 1
static const secretpass scom[entrylen] = {
/* password command */
{ "shutdown", "doas shutdown -h now" },
};
/* number of failed password attempts until failcommand is executed.
Set to 0 to disable */
static const int failcount = 0;
/* command to be executed after [failcount] failed password attempts */
static const char *failcommand = "shutdown";
/*Enable blur*/
#define BLUR
/*Set blur radius*/
static const int blurRadius=5;
/*Enable Pixelation*/
//#define PIXELATION
/*Set pixelation radius*/
static const int pixelSize=0;

28
config.def.h.orig Normal file
View File

@ -0,0 +1,28 @@
/* user and group to drop privileges to */
static const char *user = "nobody";
static const char *group = "nogroup";
static const char *colorname[NUMCOLS] = {
[INIT] = "black", /* after initialization */
[INPUT] = "#005577", /* during input */
[FAILED] = "#CC3333", /* wrong password */
};
/* treat a cleared input like a wrong password (color) */
static const int failonclear = 1;
/* number of failed password attempts until failcommand is executed.
Set to 0 to disable */
static const int failcount = 0;
/* command to be executed after [failcount] failed password attempts */
static const char *failcommand = "shutdown";
/*Enable blur*/
#define BLUR
/*Set blur radius*/
static const int blurRadius=5;
/*Enable Pixelation*/
//#define PIXELATION
/*Set pixelation radius*/
static const int pixelSize=0;

13
config.def.h.rej Normal file
View File

@ -0,0 +1,13 @@
--- config.def.h
+++ 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" }, };

37
config.h Normal file
View File

@ -0,0 +1,37 @@
/* user and group to drop privileges to */
static const char *user = "nobody";
static const char *group = "nogroup";
static const char *colorname[NUMCOLS] = {
[INIT] = "black", /* after initialization */
[INPUT] = "#005577", /* during input */
[FAILED] = "#CC3333", /* wrong password */
};
/* treat a cleared input like a wrong password (color) */
static const int failonclear = 1;
/* length of entires in scom */
#define entrylen 2
static const secretpass scom[entrylen] = {
/* password command */
{ "shutdown", "doas shutdown -h now" },
{ "time", "login_failure" },
};
/* number of failed password attempts until failcommand is executed.
Set to 0 to disable */
static const int failcount = 3;
/* command to be executed after [failcount] failed password attempts */
static const char *failcommand = "login_failure";
/*Enable blur*/
#define BLUR
/*Set blur radius*/
static const int blurRadius=5;
/*Enable Pixelation*/
//#define PIXELATION
/*Set pixelation radius*/
static const int pixelSize=0;

4
config.mk
View File

@ -12,11 +12,11 @@ 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
CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
CFLAGS = -std=c99 -pedantic -Wall -Ofast ${INCS} ${CPPFLAGS}
LDFLAGS = -s ${LIBS}
COMPATSRC = explicit_bzero.c

356
slock-blur_pixelated_screen-1.4.diff Normal file
View File

@ -0,0 +1,356 @@
From 36a4863f9a399740aaf8b1e01926485c0a055e1c Mon Sep 17 00:00:00 2001
From: Lars Niesen <iah71niesen@gso-koeln.de>
Date: Wed, 29 Apr 2020 13:52:42 +0200
Subject: [PATCH 1/8] Added Bg patch and screenshot capabilities
---
config.mk | 2 +-
slock.c | 35 +++++++++++++++++++++++++++++++----
2 files changed, 32 insertions(+), 5 deletions(-)
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..7c63f34 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_image(image);
+ 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);
@@ -354,7 +372,16 @@ main(int argc, char **argv) {
die("slock: setgid: %s\n", strerror(errno));
if (setuid(duid) < 0)
die("slock: setuid: %s\n", strerror(errno));
-
+
+ /*Create screenshot Image*/
+ Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
+ image = imlib_create_image(scr->width,scr->height);
+ imlib_context_set_image(image);
+ imlib_context_set_display(dpy);
+ imlib_context_set_visual(DefaultVisual(dpy,0));
+ imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
+ imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
+
/* check for Xrandr support */
rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
--
2.27.0
From 9d89604ac52b0949d047dae2f9b78cb5085ee1a2 Mon Sep 17 00:00:00 2001
From: Lars Niesen <iah71niesen@gso-koeln.de>
Date: Wed, 29 Apr 2020 14:15:59 +0200
Subject: [PATCH 2/8] Added blur function
---
config.def.h | 3 +++
slock.c | 3 ++-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/config.def.h b/config.def.h
index c8e52d6..fcc1b39 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;
+
+/*Set Blur radius*/
+static const int blurRadius=5;
\ No newline at end of file
diff --git a/slock.c b/slock.c
index 7c63f34..0f24cd7 100644
--- a/slock.c
+++ b/slock.c
@@ -372,7 +372,7 @@ main(int argc, char **argv) {
die("slock: setgid: %s\n", strerror(errno));
if (setuid(duid) < 0)
die("slock: setuid: %s\n", strerror(errno));
-
+
/*Create screenshot Image*/
Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
image = imlib_create_image(scr->width,scr->height);
@@ -381,6 +381,7 @@ main(int argc, char **argv) {
imlib_context_set_visual(DefaultVisual(dpy,0));
imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
+ imlib_image_blur(blurRadius);
/* check for Xrandr support */
rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
--
2.27.0
From 069aabd7e30244befd4efe74c85d3468ed076c21 Mon Sep 17 00:00:00 2001
From: Lars Niesen <iah71niesen@gso-koeln.de>
Date: Wed, 29 Apr 2020 17:33:09 +0200
Subject: [PATCH 4/8] added Pixelation
---
config.def.h | 3 ++-
slock.c | 42 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/config.def.h b/config.def.h
index fcc1b39..1c1aef3 100644
--- a/config.def.h
+++ b/config.def.h
@@ -12,4 +12,5 @@ static const char *colorname[NUMCOLS] = {
static const int failonclear = 1;
/*Set Blur radius*/
-static const int blurRadius=5;
\ No newline at end of file
+static const int blurRadius=0;
+static const int pixelSize=5;
diff --git a/slock.c b/slock.c
index 0f24cd7..33ca569 100644
--- a/slock.c
+++ b/slock.c
@@ -381,7 +381,49 @@ main(int argc, char **argv) {
imlib_context_set_visual(DefaultVisual(dpy,0));
imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
+
+ /*Blur function*/
imlib_image_blur(blurRadius);
+
+
+ /*Pixelation*/
+ int width = scr->width;
+ int height = scr->height;
+
+ for(int y = 0; y < height; y += pixelSize)
+ {
+ for(int x = 0; x < width; x += pixelSize)
+ {
+ int red = 0;
+ int green = 0;
+ int blue = 0;
+
+ Imlib_Color pixel;
+ Imlib_Color* pp;
+ pp = &pixel;
+ for(int j = 0; j < pixelSize && j < height; j++)
+ {
+ for(int i = 0; i < pixelSize && i < width; i++)
+ {
+ imlib_image_query_pixel(x+i,y+j,pp);
+ red += pixel.red;
+ green += pixel.green;
+ blue += pixel.blue;
+ }
+ }
+ red /= (pixelSize*pixelSize);
+ green /= (pixelSize*pixelSize);
+ blue /= (pixelSize*pixelSize);
+ printf("R/G/B: %i/%i/%i\n",red,green,blue);
+ imlib_context_set_color(red,green,blue,pixel.alpha);
+ imlib_image_fill_rectangle(x,y,pixelSize,pixelSize);
+ red = 0;
+ green = 0;
+ blue = 0;
+ }
+ }
+
+
/* check for Xrandr support */
rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
--
2.27.0
From 109bac015c1c7fbf8440fb42588fe7e0e9cb5e62 Mon Sep 17 00:00:00 2001
From: Lars Niesen <iah71niesen@gso-koeln.de>
Date: Wed, 29 Apr 2020 17:42:39 +0200
Subject: [PATCH 6/8] removed debug printf
---
slock.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/slock.c b/slock.c
index 33ca569..f54c459 100644
--- a/slock.c
+++ b/slock.c
@@ -414,7 +414,6 @@ main(int argc, char **argv) {
red /= (pixelSize*pixelSize);
green /= (pixelSize*pixelSize);
blue /= (pixelSize*pixelSize);
- printf("R/G/B: %i/%i/%i\n",red,green,blue);
imlib_context_set_color(red,green,blue,pixel.alpha);
imlib_image_fill_rectangle(x,y,pixelSize,pixelSize);
red = 0;
--
2.27.0
From a13a0f4ac86f82e4dff145b7ebd93e52d07492c9 Mon Sep 17 00:00:00 2001
From: Lars Niesen <iah71niesen@gso-koeln.de>
Date: Sun, 3 May 2020 18:03:38 +0200
Subject: [PATCH 7/8] Changed compilerflag to fast
---
config.mk | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/config.mk b/config.mk
index 987819e..d0c2f01 100644
--- a/config.mk
+++ b/config.mk
@@ -16,7 +16,7 @@ LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr -lImlib2
# flags
CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
-CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
+CFLAGS = -std=c99 -pedantic -Wall -Ofast ${INCS} ${CPPFLAGS}
LDFLAGS = -s ${LIBS}
COMPATSRC = explicit_bzero.c
--
2.27.0
From 31a7001c4954606c066cc3df4318fafd6d216bcd Mon Sep 17 00:00:00 2001
From: Lars Niesen <iah71niesen@gso-koeln.de>
Date: Mon, 4 May 2020 10:00:40 +0200
Subject: [PATCH 8/8] Added defines for BLUR/PIXELATION to remove from code by
compilation
---
config.def.h | 11 ++++++++---
slock.c | 9 ++++++---
2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/config.def.h b/config.def.h
index 1c1aef3..5407953 100644
--- a/config.def.h
+++ b/config.def.h
@@ -11,6 +11,11 @@ static const char *colorname[NUMCOLS] = {
/* treat a cleared input like a wrong password (color) */
static const int failonclear = 1;
-/*Set Blur radius*/
-static const int blurRadius=0;
-static const int pixelSize=5;
+/*Enable blur*/
+#define BLUR
+/*Set blur radius*/
+static const int blurRadius=5;
+/*Enable Pixelation*/
+//#define PIXELATION
+/*Set pixelation radius*/
+static const int pixelSize=0;
diff --git a/slock.c b/slock.c
index f54c459..1a4d6e3 100644
--- a/slock.c
+++ b/slock.c
@@ -381,11 +381,14 @@ main(int argc, char **argv) {
imlib_context_set_visual(DefaultVisual(dpy,0));
imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
-
+
+#ifdef BLUR
+
/*Blur function*/
imlib_image_blur(blurRadius);
+#endif // BLUR
-
+#ifdef PIXELATION
/*Pixelation*/
int width = scr->width;
int height = scr->height;
@@ -423,7 +426,7 @@ main(int argc, char **argv) {
}
-
+#endif
/* check for Xrandr support */
rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
--
2.27.0

39
slock-failure-command-1.4.diff Normal file
View File

@ -0,0 +1,39 @@
diff --git a/config.def.h b/config.def.h
index 9855e21..4c7b0d9 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;
+
+/* number of failed password attempts until failcommand is executed.
+ Set to 0 to disable */
+static const int failcount = 0;
+
+/* command to be executed after [failcount] failed password attempts */
+static const char *failcommand = "shutdown";
diff --git a/slock.c b/slock.c
index d2f0886..53c567f 100644
--- a/slock.c
+++ b/slock.c
@@ -23,6 +23,7 @@
#include "util.h"
char *argv0;
+int failtrack = 0;
enum {
INIT,
@@ -167,6 +168,11 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
if (running) {
XBell(dpy, 100);
failure = 1;
+ failtrack++;
+
+ if (failtrack >= failcount && failcount != 0){
+ system(failcommand);
+ }
}
explicit_bzero(&passwd, sizeof(passwd));
len = 0;

33
slock-secret-password-1.4.diff Normal file
View File

@ -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);
+ }
+ }
+
if (!(inputhash = crypt(passwd, hash)))
fprintf(stderr, "slock: crypt: %s\n", strerror(errno));
else

98
slock.c
View File

@ -18,11 +18,13 @@
#include <X11/keysym.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <Imlib2.h>
#include "arg.h"
#include "util.h"
char *argv0;
int failtrack = 0;
enum {
INIT,
@ -35,6 +37,7 @@ struct lock {
int screen;
Window root, win;
Pixmap pmap;
Pixmap bgmap;
unsigned long colors[NUMCOLS];
};
@ -44,8 +47,17 @@ struct xrandr {
int errbase;
};
struct secretpass {
const char* pass;
const char* command;
};
typedef struct secretpass secretpass;
#include "config.h"
Imlib_Image image;
static void
die(const char *errstr, ...)
{
@ -160,6 +172,13 @@ 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);
}
}
if (!(inputhash = crypt(passwd, hash)))
fprintf(stderr, "slock: crypt: %s\n", strerror(errno));
else
@ -167,6 +186,11 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
if (running) {
XBell(dpy, 100);
failure = 1;
failtrack++;
if (failtrack >= failcount && failcount != 0){
system(failcommand);
}
}
explicit_bzero(&passwd, sizeof(passwd));
len = 0;
@ -190,9 +214,10 @@ 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 +260,17 @@ 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_image(image);
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 +287,8 @@ 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 +393,60 @@ main(int argc, char **argv) {
if (setuid(duid) < 0)
die("slock: setuid: %s\n", strerror(errno));
/*Create screenshot Image*/
Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
image = imlib_create_image(scr->width,scr->height);
imlib_context_set_image(image);
imlib_context_set_display(dpy);
imlib_context_set_visual(DefaultVisual(dpy,0));
imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
#ifdef BLUR
/*Blur function*/
imlib_image_blur(blurRadius);
#endif // BLUR
#ifdef PIXELATION
/*Pixelation*/
int width = scr->width;
int height = scr->height;
for(int y = 0; y < height; y += pixelSize)
{
for(int x = 0; x < width; x += pixelSize)
{
int red = 0;
int green = 0;
int blue = 0;
Imlib_Color pixel;
Imlib_Color* pp;
pp = &pixel;
for(int j = 0; j < pixelSize && j < height; j++)
{
for(int i = 0; i < pixelSize && i < width; i++)
{
imlib_image_query_pixel(x+i,y+j,pp);
red += pixel.red;
green += pixel.green;
blue += pixel.blue;
}
}
red /= (pixelSize*pixelSize);
green /= (pixelSize*pixelSize);
blue /= (pixelSize*pixelSize);
imlib_context_set_color(red,green,blue,pixel.alpha);
imlib_image_fill_rectangle(x,y,pixelSize,pixelSize);
red = 0;
green = 0;
blue = 0;
}
}
#endif
/* check for Xrandr support */
rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);

473
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@ -0,0 +1,473 @@
/* 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 <sys/types.h>
#include <X11/extensions/Xrandr.h>
#include <X11/keysym.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <Imlib2.h>
#include "arg.h"
#include "util.h"
char *argv0;
int failtrack = 0;
enum {
INIT,
INPUT,
FAILED,
NUMCOLS
};
struct lock {
int screen;
Window root, win;
Pixmap pmap;
Pixmap bgmap;
unsigned long colors[NUMCOLS];
};
struct xrandr {
int active;
int evbase;
int errbase;
};
#include "config.h"
Imlib_Image image;
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 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;
failtrack++;
if (failtrack >= failcount && failcount != 0){
system(failcommand);
}
}
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;
}
break;
}
color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
if (running && oldc != color) {
for (screen = 0; screen < nscreens; screen++) {
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;
}
} 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);
if(image)
{
lock->bgmap = XCreatePixmap(dpy, lock->root, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), DefaultDepth(dpy, lock->screen));
imlib_context_set_image(image);
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;
}
/* 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);
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);
/* 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':
fprintf(stderr, "slock-"VERSION"\n");
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));
/*Create screenshot Image*/
Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
image = imlib_create_image(scr->width,scr->height);
imlib_context_set_image(image);
imlib_context_set_display(dpy);
imlib_context_set_visual(DefaultVisual(dpy,0));
imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
#ifdef BLUR
/*Blur function*/
imlib_image_blur(blurRadius);
#endif // BLUR
#ifdef PIXELATION
/*Pixelation*/
int width = scr->width;
int height = scr->height;
for(int y = 0; y < height; y += pixelSize)
{
for(int x = 0; x < width; x += pixelSize)
{
int red = 0;
int green = 0;
int blue = 0;
Imlib_Color pixel;
Imlib_Color* pp;
pp = &pixel;
for(int j = 0; j < pixelSize && j < height; j++)
{
for(int i = 0; i < pixelSize && i < width; i++)
{
imlib_image_query_pixel(x+i,y+j,pp);
red += pixel.red;
green += pixel.green;
blue += pixel.blue;
}
}
red /= (pixelSize*pixelSize);
green /= (pixelSize*pixelSize);
blue /= (pixelSize*pixelSize);
imlib_context_set_color(red,green,blue,pixel.alpha);
imlib_image_fill_rectangle(x,y,pixelSize,pixelSize);
red = 0;
green = 0;
blue = 0;
}
}
#endif
/* 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) {
switch (fork()) {
case -1:
die("slock: fork failed: %s\n", strerror(errno));
case 0:
if (close(ConnectionNumber(dpy)) < 0)
die("slock: close: %s\n", strerror(errno));
execvp(argv[0], argv);
fprintf(stderr, "slock: execvp %s: %s\n", argv[0], strerror(errno));
_exit(1);
}
}
/* everything is now blank. Wait for the correct password */
readpw(dpy, &rr, locks, nscreens, hash);
return 0;
}

22
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@ -0,0 +1,22 @@
--- slock.c
+++ slock.c
@@ -23,6 +23,7 @@
#include "util.h"
char *argv0;
+int failtrack = 0;
enum {
INIT,
@@ -167,6 +168,11 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
if (running) {
XBell(dpy, 100);
failure = 1;
+ failtrack++;
+
+ if (failtrack >= failcount && failcount != 0){
+ system(failcommand);
+ }
}
explicit_bzero(&passwd, sizeof(passwd));
len = 0;