X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=slock.c;h=8ed59ca07a9719aeefa89d06c79af89da83a88e0;hb=d8bec0f6fdc8a246d78cb488a0068954b46fcb29;hp=210d5c85fabbffb7659cf95081d595a49fe8c449;hpb=3bb868e40873c568acdec74f7783c77f063aa396;p=slock.git

diff --git a/slock.c b/slock.c
index 210d5c8..8ed59ca 100644
--- a/slock.c
+++ b/slock.c
@@ -123,7 +123,7 @@ readpw(Display *dpy)
 readpw(Display *dpy, const char *pws)
 #endif
 {
-	char buf[32], passwd[256];
+	char buf[32], passwd[256], *encrypted;
 	int num, screen;
 	unsigned int len, color;
 	KeySym ksym;
@@ -157,9 +157,13 @@ readpw(Display *dpy, const char *pws)
 			case XK_Return:
 				passwd[len] = 0;
 #ifdef HAVE_BSD_AUTH
-				running = !auth_userokay(getlogin(), NULL, "auth-xlock", passwd);
+				running = !auth_userokay(getlogin(), NULL, "auth-slock", passwd);
 #else
-				running = !!strcmp(crypt(passwd, pws), pws);
+				errno = 0;
+				if (!(encrypted = crypt(passwd, pws)))
+					fprintf(stderr, "slock: crypt: %s\n", strerror(errno));
+				else
+					running = !!strcmp(encrypted, pws);
 #endif
 				if (running) {
 					XBell(dpy, 100);
@@ -222,7 +226,6 @@ static Lock *
 lockscreen(Display *dpy, int screen)
 {
 	char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
-	unsigned int len;
 	int i;
 	Lock *lock;
 	XColor color, dummy;
@@ -249,34 +252,31 @@ lockscreen(Display *dpy, int screen)
 	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);
-	XMapRaised(dpy, lock->win);
-	if (rr)
-		XRRSelectInput(dpy, lock->win, RRScreenChangeNotifyMask);
 
 	/* Try to grab mouse pointer *and* keyboard, else fail the lock */
-	for (len = 1000; len; len--) {
-		if (XGrabPointer(dpy, lock->root, False, ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
-		    GrabModeAsync, GrabModeAsync, None, invisible, CurrentTime) == GrabSuccess)
-			break;
-		usleep(1000);
-	}
-	if (!len) {
+	if (XGrabPointer(dpy, lock->root, False, ButtonPressMask |
+	    ButtonReleaseMask | PointerMotionMask, GrabModeAsync, GrabModeAsync,
+	    None, invisible, CurrentTime) != GrabSuccess) {
 		fprintf(stderr, "slock: unable to grab mouse pointer for screen %d\n", screen);
-	} else {
-		for (len = 1000; len; len--) {
-			if (XGrabKeyboard(dpy, lock->root, True, GrabModeAsync, GrabModeAsync, CurrentTime) == GrabSuccess) {
-				/* everything fine, we grabbed both inputs */
-				XSelectInput(dpy, lock->root, SubstructureNotifyMask);
-				return lock;
-			}
-			usleep(1000);
-		}
+		running = 0;
+		unlockscreen(dpy, lock);
+		return NULL;
+	}
+
+	if (XGrabKeyboard(dpy, lock->root, True, GrabModeAsync, GrabModeAsync,
+	    CurrentTime) != GrabSuccess) {
 		fprintf(stderr, "slock: unable to grab keyboard for screen %d\n", screen);
+		running = 0;
+		unlockscreen(dpy, lock);
+		return NULL;
 	}
-	/* grabbing one of the inputs failed */
-	running = 0;
-	unlockscreen(dpy, lock);
-	return NULL;
+
+	XMapRaised(dpy, lock->win);
+	if (rr)
+		XRRSelectInput(dpy, lock->win, RRScreenChangeNotifyMask);
+
+	XSelectInput(dpy, lock->root, SubstructureNotifyMask);
+	return lock;
 }
 
 static void
@@ -316,6 +316,8 @@ main(int argc, char **argv) {
 
 #ifndef HAVE_BSD_AUTH
 	pws = getpw();
+	if (strlen(pws) < 2)
+		die("slock: failed to get user password hash.\n");
 #endif
 
 	if (!(dpy = XOpenDisplay(NULL)))