applied Fernando Silveira's multiscreen patch for old style multihead setups
This commit is contained in:
Anselm R Garbe
parent
0cb05bdb75
commit
732d2b3bf5
220
slock.c
220
slock.c
@ -5,6 +5,7 @@
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#endif
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#include <ctype.h>
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#include <errno.h>
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#include <pwd.h>
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#include <stdarg.h>
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#include <stdlib.h>
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@ -15,31 +16,42 @@
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#include <X11/keysym.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/extensions/dpms.h>
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#if HAVE_BSD_AUTH
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#include <login_cap.h>
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#include <bsd_auth.h>
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#endif
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struct st_lock {
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int screen;
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Window root, w;
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Pixmap pmap;
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};
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extern const char *__progname;
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static void
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die(const char *errstr, ...) {
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va_list ap;
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fprintf(stderr, "%s: ", __progname);
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va_start(ap, errstr);
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vfprintf(stderr, errstr, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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fflush(stderr);
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exit(EXIT_FAILURE);
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}
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#ifndef HAVE_BSD_AUTH
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static const char *
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get_password() { /* only run as root */
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get_password(void) { /* only run as root */
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const char *rval;
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struct passwd *pw;
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if(geteuid() != 0)
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die("slock: cannot retrieve password entry (make sure to suid slock)\n");
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die("cannot retrieve password entry (make sure to suid slock)");
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pw = getpwuid(getuid());
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endpwent();
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rval = pw->pw_passwd;
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@ -55,81 +67,34 @@ get_password() { /* only run as root */
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/* drop privileges */
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if(setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0)
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die("slock: cannot drop privileges\n");
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die("cannot drop privileges");
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return rval;
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}
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#endif
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int
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main(int argc, char **argv) {
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char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
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char buf[32], passwd[256];
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int num, screen;
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#ifndef HAVE_BSD_AUTH
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const char *pws;
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static void
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#ifdef HAVE_BSD_AUTH
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read_password(Display *dpy)
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#else
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read_password(Display *dpy, const char *pws)
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#endif
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{
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char buf[32], passwd[256];
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int num;
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unsigned int len;
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Bool running = True;
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Cursor invisible;
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Display *dpy;
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KeySym ksym;
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Pixmap pmap;
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Window root, w;
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XColor black, dummy;
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XEvent ev;
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XSetWindowAttributes wa;
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CARD16 standby, suspend, off;
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if((argc == 2) && !strcmp("-v", argv[1]))
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die("slock-"VERSION", © 2006-2008 Anselm R Garbe\n");
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else if(argc != 1)
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die("usage: slock [-v]\n");
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#ifndef HAVE_BSD_AUTH
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pws = get_password();
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#endif
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if(!(dpy = XOpenDisplay(0)))
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die("slock: cannot open display\n");
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screen = DefaultScreen(dpy);
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root = RootWindow(dpy, screen);
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/* init */
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wa.override_redirect = 1;
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wa.background_pixel = BlackPixel(dpy, screen);
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w = XCreateWindow(dpy, root, 0, 0, DisplayWidth(dpy, screen), DisplayHeight(dpy, screen),
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0, DefaultDepth(dpy, screen), CopyFromParent,
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DefaultVisual(dpy, screen), CWOverrideRedirect | CWBackPixel, &wa);
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XAllocNamedColor(dpy, DefaultColormap(dpy, screen), "black", &black, &dummy);
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pmap = XCreateBitmapFromData(dpy, w, curs, 8, 8);
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invisible = XCreatePixmapCursor(dpy, pmap, pmap, &black, &black, 0, 0);
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XDefineCursor(dpy, w, invisible);
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XMapRaised(dpy, w);
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for(len = 1000; len; len--) {
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if(XGrabPointer(dpy, root, False, ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
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GrabModeAsync, GrabModeAsync, None, invisible, CurrentTime) == GrabSuccess)
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break;
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usleep(1000);
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}
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if((running = running && (len > 0))) {
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for(len = 1000; len; len--) {
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if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
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== GrabSuccess)
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break;
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usleep(1000);
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}
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running = (len > 0);
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}
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len = 0;
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XSync(dpy, False);
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running = True;
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if(DPMSCapable(dpy)) { /* save and customize DPMS settings */
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DPMSGetTimeouts(dpy, &standby, &suspend, &off);
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DPMSSetTimeouts(dpy, 10, 30, 90);
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}
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/* As "slock" stands for "Simple X display locker", the DPMS settings
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* had been removed and you can set it with "xset" or some other
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* utility. This way the user can easily set a customized DPMS
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* timeout. */
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/* main event loop */
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while(running && !XNextEvent(dpy, &ev)) {
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if(ev.type == KeyPress) {
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buf[0] = 0;
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@ -172,12 +137,129 @@ main(int argc, char **argv) {
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}
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}
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}
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if(DPMSCapable(dpy)) { /* restore DPMS settings */
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DPMSSetTimeouts(dpy, standby, suspend, off);
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}
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static void
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unlockscreen(Display *dpy, struct st_lock *lock) {
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if (dpy == NULL || lock == NULL)
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return;
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XUngrabPointer(dpy, CurrentTime);
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XFreePixmap(dpy, pmap);
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XDestroyWindow(dpy, w);
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XFreePixmap(dpy, lock->pmap);
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XDestroyWindow(dpy, lock->w);
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free(lock);
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}
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static struct st_lock *
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lockscreen(Display *dpy, int screen) {
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char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
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unsigned int len;
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struct st_lock *lock;
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Bool running = True;
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XColor black, dummy;
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XSetWindowAttributes wa;
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Cursor invisible;
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if (dpy == NULL || screen < 0)
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return NULL;
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lock = malloc(sizeof(struct st_lock));
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if (lock == NULL)
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return NULL;
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lock->screen = screen;
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lock->root = RootWindow(dpy, lock->screen);
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/* init */
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wa.override_redirect = 1;
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wa.background_pixel = BlackPixel(dpy, lock->screen);
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lock->w = XCreateWindow(dpy, lock->root, 0, 0, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen),
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0, DefaultDepth(dpy, lock->screen), CopyFromParent,
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DefaultVisual(dpy, lock->screen), CWOverrideRedirect | CWBackPixel, &wa);
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XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen), "black", &black, &dummy);
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lock->pmap = XCreateBitmapFromData(dpy, lock->w, curs, 8, 8);
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invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap, &black, &black, 0, 0);
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XDefineCursor(dpy, lock->w, invisible);
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XMapRaised(dpy, lock->w);
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for(len = 1000; len; len--) {
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if(XGrabPointer(dpy, lock->root, False, ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
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GrabModeAsync, GrabModeAsync, None, invisible, CurrentTime) == GrabSuccess)
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break;
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usleep(1000);
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}
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if((running = running && (len > 0))) {
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for(len = 1000; len; len--) {
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if(XGrabKeyboard(dpy, lock->root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
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== GrabSuccess)
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break;
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usleep(1000);
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}
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running = (len > 0);
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}
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if (!running) {
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unlockscreen(dpy, lock);
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lock = NULL;
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}
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return lock;
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}
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static void
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usage(void) {
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fprintf(stderr, "usage: %s -v", __progname);
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exit(EXIT_FAILURE);
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}
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int
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main(int argc, char **argv) {
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#ifndef HAVE_BSD_AUTH
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const char *pws;
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#endif
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Display *dpy;
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int nscreens, screen;
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struct st_lock **locks;
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if((argc == 2) && !strcmp("-v", argv[1]))
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die("slock-%s, © 2006-2008 Anselm R Garbe", VERSION);
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else if(argc != 1)
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usage();
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#ifndef HAVE_BSD_AUTH
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pws = get_password();
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#endif
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if(!(dpy = XOpenDisplay(0)))
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die("cannot open display");
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/* Get the number of screens in display "dpy" and blank them all. */
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nscreens = ScreenCount(dpy);
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locks = malloc(sizeof(struct st_lock *) * nscreens);
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if (locks == NULL)
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die("malloc: %s", strerror(errno));
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for (screen = 0; screen < nscreens; screen++)
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locks[screen] = lockscreen(dpy, screen);
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XSync(dpy, False);
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/* Everything is now blank. Now wait for the correct password. */
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#ifdef HAVE_BSD_AUTH
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read_password(dpy);
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#else
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read_password(dpy, pws);
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#endif
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/* Password ok, unlock everything and quit. */
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for (screen = 0; screen < nscreens; screen++)
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unlockscreen(dpy, locks[screen]);
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free(locks);
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XCloseDisplay(dpy);
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return 0;
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}
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