removed Sander from -v by request

[slock.git] / slock.c

diff --git a/slock.c b/slock.c
index 97a80c5..4723102 100644 (file)
--- a/slock.c
+++ b/slock.c
@@ -1,6 +1,5 @@
-/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
+/* © 2006-2007 Anselm R. Garbe <garbeam at gmail dot com>
+ * See LICENSE file for license details. */

 #define _XOPEN_SOURCE 500
 #if HAVE_SHADOW_H
 #include <shadow.h>
 #define _XOPEN_SOURCE 500
 #if HAVE_SHADOW_H
 #include <shadow.h>


@@ -8,6 +7,7 @@
 
 #include <ctype.h>
 #include <pwd.h>
 
 #include <ctype.h>
 #include <pwd.h>

+#include <stdarg.h>

 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>


@@ -17,15 +17,23 @@
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 

+void
+eprint(const char *errstr, ...) {
+       va_list ap;
+
+       va_start(ap, errstr);
+       vfprintf(stderr, errstr, ap);
+       va_end(ap);
+       exit(EXIT_FAILURE);
+}
+

 const char *
 get_password() { /* only run as root */
        const char *rval;
        struct passwd *pw;
 
 const char *
 get_password() { /* only run as root */
        const char *rval;
        struct passwd *pw;
 

-       if(geteuid() != 0) {
-               fputs("slock: cannot retrieve password entry (make sure to suid slock)\n", stderr);
-               exit(EXIT_FAILURE);
-       }
+       if(geteuid() != 0)
+               eprint("slock: cannot retrieve password entry (make sure to suid slock)\n");

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


@@ -39,10 +47,8 @@ get_password() { /* only run as root */
        }
 #endif
        /* drop privileges */
        }
 #endif
        /* drop privileges */

-       if(setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0) {
-               fputs("slock: cannot drop privileges\n",stdout);
-               exit(EXIT_FAILURE);
-       }
+       if(setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0)
+               eprint("slock: cannot drop privileges\n");

        return rval;
 }
 
        return rval;
 }
 


@@ -63,15 +69,13 @@ main(int argc, char **argv) {
        XEvent ev;
        XSetWindowAttributes wa;
 
        XEvent ev;
        XSetWindowAttributes wa;
 

-       if((argc > 1) && !strncmp(argv[1], "-v", 3)) {
-               fputs("slock-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
-               exit(EXIT_SUCCESS);
-       }
+       if((argc == 2) && !strcmp("-v", argv[1]))
+               eprint("slock-"VERSION", © 2006-2007 Anselm R. Garbe\n");
+       else if(argc != 1)
+               eprint("usage: slock [-v]\n");

        pws = get_password();
        pws = get_password();

-       if(!(dpy = XOpenDisplay(0))) {
-               fputs("slock: cannot open display\n", stderr);
-               exit(EXIT_FAILURE);
-       }
+       if(!(dpy = XOpenDisplay(0)))
+               eprint("slock: cannot open display\n");

        screen = DefaultScreen(dpy);
        root = RootWindow(dpy, screen);
 
        screen = DefaultScreen(dpy);
        root = RootWindow(dpy, screen);
 


@@ -81,21 +85,20 @@ main(int argc, char **argv) {
        w = XCreateWindow(dpy, root, 0, 0, DisplayWidth(dpy, screen), DisplayHeight(dpy, screen),
                        0, DefaultDepth(dpy, screen), CopyFromParent,
                        DefaultVisual(dpy, screen), CWOverrideRedirect | CWBackPixel, &wa);
        w = XCreateWindow(dpy, root, 0, 0, DisplayWidth(dpy, screen), DisplayHeight(dpy, screen),
                        0, DefaultDepth(dpy, screen), CopyFromParent,
                        DefaultVisual(dpy, screen), CWOverrideRedirect | CWBackPixel, &wa);

-

        XAllocNamedColor(dpy, DefaultColormap(dpy, screen), "black", &black, &dummy);
        pmap = XCreateBitmapFromData(dpy, w, curs, 8, 8);
        invisible = XCreatePixmapCursor(dpy, pmap, pmap, &black, &black, 0, 0);
        XDefineCursor(dpy, w, invisible);
        XMapRaised(dpy, w);
        for(len = 1000; len; len--) {
        XAllocNamedColor(dpy, DefaultColormap(dpy, screen), "black", &black, &dummy);
        pmap = XCreateBitmapFromData(dpy, w, curs, 8, 8);
        invisible = XCreatePixmapCursor(dpy, pmap, pmap, &black, &black, 0, 0);
        XDefineCursor(dpy, w, invisible);
        XMapRaised(dpy, w);
        for(len = 1000; len; len--) {

-               if(XGrabPointer(dpy, w, False, ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
-                       GrabModeAsync, GrabModeSync, None, invisible, CurrentTime) == GrabSuccess)
+               if(XGrabPointer(dpy, root, False, ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
+                       GrabModeAsync, GrabModeAsync, None, invisible, CurrentTime) == GrabSuccess)

                        break;
                usleep(1000);
        }
        if((running = running && (len > 0))) {
                for(len = 1000; len; len--) {
                        break;
                usleep(1000);
        }
        if((running = running && (len > 0))) {
                for(len = 1000; len; len--) {

-                       if(XGrabKeyboard(dpy, w, True, GrabModeAsync, GrabModeAsync, CurrentTime)
+                       if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)

                                == GrabSuccess)
                                break;
                        usleep(1000);
                                == GrabSuccess)
                                break;
                        usleep(1000);