select for SubstructureRedirectMask as well

[slock.git] / slock.c

diff --git a/slock.c b/slock.c
index d150009..96d4379 100644 (file)
--- a/slock.c
+++ b/slock.c
@@ -22,25 +22,23 @@
 #include <bsd_auth.h>
 #endif
 
 #include <bsd_auth.h>
 #endif
 

-struct st_lock {
+typedef struct {

        int screen;
        int screen;

-       Window root, w;
+       Window root, win;

        Pixmap pmap;
        Pixmap pmap;

-};
+} Lock;

 
 

-extern const char *__progname;
+static Lock **locks;
+static int nscreens;
+static Bool running = True;

 
 static void
 die(const char *errstr, ...) {
        va_list ap;
 
 
 static void
 die(const char *errstr, ...) {
        va_list ap;
 

-       fprintf(stderr, "%s: ", __progname);

        va_start(ap, errstr);
        vfprintf(stderr, errstr, ap);
        va_end(ap);
        va_start(ap, errstr);
        vfprintf(stderr, errstr, ap);
        va_end(ap);

-       fprintf(stderr, "\n");
-       fflush(stderr);
-

        exit(EXIT_FAILURE);
 }
 
        exit(EXIT_FAILURE);
 }
 


@@ -52,7 +50,7 @@ getpw(void) { /* only run as root */
 
        pw = getpwuid(getuid());
        if(!pw)
 
        pw = getpwuid(getuid());
        if(!pw)

-               die("cannot retrieve password entry (make sure to suid or sgid slock)");
+               die("slock: cannot retrieve password entry (make sure to suid or sgid slock)");

        endpwent();
        rval =  pw->pw_passwd;
 
        endpwent();
        rval =  pw->pw_passwd;
 


@@ -69,7 +67,7 @@ getpw(void) { /* only run as root */
 
        /* drop privileges */
        if(setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0)
 
        /* drop privileges */
        if(setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0)

-               die("cannot drop privileges");
+               die("slock: cannot drop privileges");

        return rval;
 }
 #endif
        return rval;
 }
 #endif


@@ -82,10 +80,8 @@ readpw(Display *dpy, const char *pws)
 #endif
 {
        char buf[32], passwd[256];
 #endif
 {
        char buf[32], passwd[256];

-       int num;
-
+       int num, screen;

        unsigned int len;
        unsigned int len;

-       Bool running = True;

        KeySym ksym;
        XEvent ev;
 
        KeySym ksym;
        XEvent ev;
 


@@ -96,7 +92,6 @@ readpw(Display *dpy, const char *pws)
         * had been removed and you can set it with "xset" or some other
         * utility. This way the user can easily set a customized DPMS
         * timeout. */
         * had been removed and you can set it with "xset" or some other
         * utility. This way the user can easily set a customized DPMS
         * timeout. */

-

        while(running && !XNextEvent(dpy, &ev)) {
                if(ev.type == KeyPress) {
                        buf[0] = 0;
        while(running && !XNextEvent(dpy, &ev)) {
                if(ev.type == KeyPress) {
                        buf[0] = 0;


@@ -119,7 +114,7 @@ readpw(Display *dpy, const char *pws)
 #else
                                running = strcmp(crypt(passwd, pws), pws);
 #endif
 #else
                                running = strcmp(crypt(passwd, pws), pws);
 #endif

-                               if (running != 0)
+                               if(running != False)

                                        XBell(dpy, 100);
                                len = 0;
                                break;
                                        XBell(dpy, 100);
                                len = 0;
                                break;


@@ -138,36 +133,37 @@ readpw(Display *dpy, const char *pws)
                                break;
                        }
                }
                                break;
                        }
                }

+               else for(screen = 0; screen < nscreens; screen++)
+                       XRaiseWindow(dpy, locks[screen]->win);

        }
 }
 
 static void
        }
 }
 
 static void

-unlockscreen(Display *dpy, struct st_lock *lock) {
-       if (dpy == NULL || lock == NULL)
+unlockscreen(Display *dpy, Lock *lock) {
+       if(dpy == NULL || lock == NULL)

                return;
 
        XUngrabPointer(dpy, CurrentTime);
        XFreePixmap(dpy, lock->pmap);
                return;
 
        XUngrabPointer(dpy, CurrentTime);
        XFreePixmap(dpy, lock->pmap);

-       XDestroyWindow(dpy, lock->w);
+       XDestroyWindow(dpy, lock->win);

 
        free(lock);
 }
 
 
        free(lock);
 }
 

-static struct st_lock *
+static Lock *

 lockscreen(Display *dpy, int screen) {
        char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
        unsigned int len;
 lockscreen(Display *dpy, int screen) {
        char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
        unsigned int len;

-       struct st_lock *lock;
-       Bool running = True;
+       Lock *lock;

        XColor black, dummy;
        XSetWindowAttributes wa;
        Cursor invisible;
 
        XColor black, dummy;
        XSetWindowAttributes wa;
        Cursor invisible;
 

-       if (dpy == NULL || screen < 0)
+       if(dpy == NULL || screen < 0)

                return NULL;
 
                return NULL;
 

-       lock = malloc(sizeof(struct st_lock));
-       if (lock == NULL)
+       lock = malloc(sizeof(Lock));
+       if(lock == NULL)

                return NULL;
 
        lock->screen = screen;
                return NULL;
 
        lock->screen = screen;


@@ -177,21 +173,21 @@ lockscreen(Display *dpy, int screen) {
        /* init */
        wa.override_redirect = 1;
        wa.background_pixel = BlackPixel(dpy, lock->screen);
        /* init */
        wa.override_redirect = 1;
        wa.background_pixel = BlackPixel(dpy, lock->screen);

-       lock->w = XCreateWindow(dpy, lock->root, 0, 0, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen),
+       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);
        XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen), "black", &black, &dummy);
                        0, DefaultDepth(dpy, lock->screen), CopyFromParent,
                        DefaultVisual(dpy, lock->screen), CWOverrideRedirect | CWBackPixel, &wa);
        XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen), "black", &black, &dummy);

-       lock->pmap = XCreateBitmapFromData(dpy, lock->w, curs, 8, 8);
+       lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);

        invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap, &black, &black, 0, 0);
        invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap, &black, &black, 0, 0);

-       XDefineCursor(dpy, lock->w, invisible);
-       XMapRaised(dpy, lock->w);
+       XDefineCursor(dpy, lock->win, invisible);
+       XMapRaised(dpy, lock->win);

        for(len = 1000; len; len--) {
                if(XGrabPointer(dpy, lock->root, False, ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
                        GrabModeAsync, GrabModeAsync, None, invisible, CurrentTime) == GrabSuccess)
                        break;
                usleep(1000);
        }
        for(len = 1000; len; len--) {
                if(XGrabPointer(dpy, lock->root, False, ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
                        GrabModeAsync, GrabModeAsync, None, invisible, CurrentTime) == GrabSuccess)
                        break;
                usleep(1000);
        }

-       if((running = running && (len > 0))) {
+       if(running && (len > 0)) {

                for(len = 1000; len; len--) {
                        if(XGrabKeyboard(dpy, lock->root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
                                == GrabSuccess)
                for(len = 1000; len; len--) {
                        if(XGrabKeyboard(dpy, lock->root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
                                == GrabSuccess)


@@ -201,60 +197,51 @@ lockscreen(Display *dpy, int screen) {
                running = (len > 0);
        }
 
                running = (len > 0);
        }
 

-       if (!running) {
+       if(!running) {

                unlockscreen(dpy, lock);
                lock = NULL;
        }
                unlockscreen(dpy, lock);
                lock = NULL;
        }

+       else 
+               XSelectInput(dpy, lock->root, SubstructureNotifyMask);

 
        return lock;
 }
 
 static void
 usage(void) {
 
        return lock;
 }
 
 static void
 usage(void) {

-       fprintf(stderr, "usage: %s -v", __progname);
+       fprintf(stderr, "usage: slock [-v]\n");

        exit(EXIT_FAILURE);
 }
 
        exit(EXIT_FAILURE);
 }
 

-static int
-xerrordummy(Display *dpy, XErrorEvent *ee) {
-       return 0;
-}
-

 int
 main(int argc, char **argv) {
 #ifndef HAVE_BSD_AUTH
        const char *pws;
 #endif
        Display *dpy;
 int
 main(int argc, char **argv) {
 #ifndef HAVE_BSD_AUTH
        const char *pws;
 #endif
        Display *dpy;

-       int nscreens, screen;
-
-       struct st_lock **locks;
+       int screen;

 
        if((argc == 2) && !strcmp("-v", argv[1]))
 
        if((argc == 2) && !strcmp("-v", argv[1]))

-               die("slock-%s, © 2006-2012 Anselm R Garbe", VERSION);
+               die("slock-%s, © 2006-2012 Anselm R Garbe\n", VERSION);

        else if(argc != 1)
                usage();
 
        if(!getpwuid(getuid()))
        else if(argc != 1)
                usage();
 
        if(!getpwuid(getuid()))

-               die("no passwd entry for you");
+               die("slock: no passwd entry for you");

 
 #ifndef HAVE_BSD_AUTH
        pws = getpw();
 #endif
 
        if(!(dpy = XOpenDisplay(0)))
 
 #ifndef HAVE_BSD_AUTH
        pws = getpw();
 #endif
 
        if(!(dpy = XOpenDisplay(0)))

-               die("cannot open display");
-       /* prevent default error handler to take over */
-       XSetErrorHandler(xerrordummy);
+               die("slock: cannot open display");

        /* Get the number of screens in display "dpy" and blank them all. */
        nscreens = ScreenCount(dpy);
        /* Get the number of screens in display "dpy" and blank them all. */
        nscreens = ScreenCount(dpy);

-       locks = malloc(sizeof(struct st_lock *) * nscreens);
-       if (locks == NULL)
-               die("malloc: %s", strerror(errno));
-
-       for (screen = 0; screen < nscreens; screen++)
+       locks = malloc(sizeof(Lock *) * nscreens);
+       if(locks == NULL)
+               die("slock: malloc: %s", strerror(errno));
+       for(screen = 0; screen < nscreens; screen++)

                locks[screen] = lockscreen(dpy, screen);
                locks[screen] = lockscreen(dpy, screen);

-

        XSync(dpy, False);
 
        /* Everything is now blank. Now wait for the correct password. */
        XSync(dpy, False);
 
        /* Everything is now blank. Now wait for the correct password. */


@@ -265,11 +252,10 @@ main(int argc, char **argv) {
 #endif
 
        /* Password ok, unlock everything and quit. */
 #endif
 
        /* Password ok, unlock everything and quit. */

-       for (screen = 0; screen < nscreens; screen++)
+       for(screen = 0; screen < nscreens; screen++)

                unlockscreen(dpy, locks[screen]);
 
        free(locks);
                unlockscreen(dpy, locks[screen]);
 
        free(locks);

-

        XCloseDisplay(dpy);
 
        return 0;
        XCloseDisplay(dpy);
 
        return 0;