-/* (C)opyright MMIV-MMV Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
+/* See LICENSE file for license details. */
#define _XOPEN_SOURCE 500
-
#if HAVE_SHADOW_H
#include <shadow.h>
-#else
-#include <pwd.h>
#endif
#include <ctype.h>
+#include <pwd.h>
+#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <X11/keysym.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
+#include <X11/extensions/dpms.h>
+
+#if HAVE_BSD_AUTH
+#include <login_cap.h>
+#include <bsd_auth.h>
+#endif
+
+static void
+die(const char *errstr, ...) {
+ va_list ap;
+
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(EXIT_FAILURE);
+}
+
+#ifndef HAVE_BSD_AUTH
+static const char *
+get_password() { /* only run as root */
+ const char *rval;
+ struct passwd *pw;
+
+ if(geteuid() != 0)
+ die("slock: cannot retrieve password entry (make sure to suid slock)\n");
+ pw = getpwuid(getuid());
+ endpwent();
+ rval = pw->pw_passwd;
+
+#if HAVE_SHADOW_H
+ {
+ struct spwd *sp;
+ sp = getspnam(getenv("USER"));
+ endspent();
+ rval = sp->sp_pwdp;
+ }
+#endif
+
+ /* drop privileges */
+ if(setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0)
+ die("slock: cannot drop privileges\n");
+ return rval;
+}
+#endif
int
main(int argc, char **argv) {
char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
char buf[32], passwd[256];
int num, screen;
-#if HAVE_SHADOW_H
- struct spwd *sp;
-#else
- struct passwd *pw;
+
+#ifndef HAVE_BSD_AUTH
+ const char *pws;
#endif
unsigned int len;
Bool running = True;
Display *dpy;
KeySym ksym;
Pixmap pmap;
- Window w;
+ Window root, w;
XColor black, dummy;
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(geteuid() != 0) {
- fputs("slock: cannot retrieve password entry (make sure to suid slock)\n", stderr);
- exit(EXIT_FAILURE);
- }
-#if HAVE_SHADOW_H
- sp = getspnam(getenv("USER"));
- endspent();
-#else
- pw = getpwuid(getuid());
- endpwent();
+ if((argc == 2) && !strcmp("-v", argv[1]))
+ die("slock-"VERSION", © 2006-2008 Anselm R Garbe\n");
+ else if(argc != 1)
+ die("usage: slock [-v]\n");
+
+#ifndef HAVE_BSD_AUTH
+ pws = get_password();
#endif
- if(!(dpy = XOpenDisplay(0))) {
- fputs("slock: cannot open display\n", stderr);
- exit(EXIT_FAILURE);
- }
+
+ if(!(dpy = XOpenDisplay(0)))
+ die("slock: cannot open display\n");
screen = DefaultScreen(dpy);
+ root = RootWindow(dpy, screen);
/* init */
- passwd[0] = 0;
-
wa.override_redirect = 1;
wa.background_pixel = BlackPixel(dpy, screen);
- w = XCreateWindow(dpy, RootWindow(dpy, screen), 0, 0,
- DisplayWidth(dpy, screen), DisplayHeight(dpy, screen),
+ 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);
- running = XGrabPointer(dpy, RootWindow(dpy, screen), False,
- ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
- GrabModeAsync, GrabModeSync, None, invisible, CurrentTime) == GrabSuccess;
- len = 10;
- for(len = 10; len && (XGrabKeyboard(dpy, RootWindow(dpy, screen), True, GrabModeAsync,
- GrabModeAsync, CurrentTime) != GrabSuccess); len--)
- usleep(1000);
- running = running && (len > 0);
XMapRaised(dpy, w);
+ for(len = 1000; len; len--) {
+ 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--) {
+ if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
+ == GrabSuccess)
+ break;
+ usleep(1000);
+ }
+ running = (len > 0);
+ }
+ len = 0;
XSync(dpy, False);
/* main event loop */
- while(running && !XNextEvent(dpy, &ev))
+ while(running && !XNextEvent(dpy, &ev)) {
+ if(len == 0 && DPMSCapable(dpy)) {
+ DPMSEnable(dpy);
+ DPMSForceLevel(dpy, DPMSModeOff);
+ }
if(ev.type == KeyPress) {
- len = strlen(passwd);
buf[0] = 0;
- num = XLookupString(&ev.xkey, buf, sizeof(buf), &ksym, 0);
+ 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:
-#if HAVE_SHADOW_H
- if((running = strncmp(crypt(passwd, sp->sp_pwdp), sp->sp_pwdp, sizeof(passwd))))
+ passwd[len] = 0;
+#ifdef HAVE_BSD_AUTH
+ running = !auth_userokay(getlogin(), NULL, "auth-xlock", passwd);
#else
- if((running = strncmp(crypt(passwd, pw->pw_passwd), pw->pw_passwd, sizeof(passwd))))
+ running = strcmp(crypt(passwd, pws), pws);
#endif
+ if (running != 0)
XBell(dpy, 100);
- passwd[0] = 0;
+ len = 0;
break;
case XK_Escape:
- passwd[0] = 0;
+ len = 0;
break;
case XK_BackSpace:
if(len)
- passwd[--len] = 0;
+ --len;
break;
default:
- if(num && !iscntrl((int) buf[0])) {
- buf[num] = 0;
- if(len)
- strncat(passwd, buf, sizeof(passwd));
- else
- strncpy(passwd, buf, sizeof(passwd));
+ if(num && !iscntrl((int) buf[0]) && (len + num < sizeof passwd)) {
+ memcpy(passwd + len, buf, num);
+ len += num;
}
break;
}
}
+ }
XUngrabPointer(dpy, CurrentTime);
XFreePixmap(dpy, pmap);
XDestroyWindow(dpy, w);
