1 /* See LICENSE file for license details. */
2 #define _XOPEN_SOURCE 500
14 #include <sys/types.h>
15 #include <X11/keysym.h>
17 #include <X11/Xutil.h>
18 #include <X11/extensions/dpms.h>
21 #include <login_cap.h>
26 eprint(const char *errstr, ...) {
30 vfprintf(stderr, errstr, ap);
37 get_password() { /* only run as root */
42 eprint("slock: cannot retrieve password entry (make sure to suid slock)\n");
43 pw = getpwuid(getuid());
50 sp = getspnam(getenv("USER"));
57 if(setgid(pw->pw_gid) < 0 || setuid(pw->pw_uid) < 0)
58 eprint("slock: cannot drop privileges\n");
64 main(int argc, char **argv) {
65 char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
66 char buf[32], passwd[256];
81 XSetWindowAttributes wa;
83 if((argc == 2) && !strcmp("-v", argv[1]))
84 eprint("slock-"VERSION", © 2006-2008 Anselm R Garbe\n");
86 eprint("usage: slock [-v]\n");
92 if(!(dpy = XOpenDisplay(0)))
93 eprint("slock: cannot open display\n");
94 screen = DefaultScreen(dpy);
95 root = RootWindow(dpy, screen);
98 wa.override_redirect = 1;
99 wa.background_pixel = BlackPixel(dpy, screen);
100 w = XCreateWindow(dpy, root, 0, 0, DisplayWidth(dpy, screen), DisplayHeight(dpy, screen),
101 0, DefaultDepth(dpy, screen), CopyFromParent,
102 DefaultVisual(dpy, screen), CWOverrideRedirect | CWBackPixel, &wa);
103 XAllocNamedColor(dpy, DefaultColormap(dpy, screen), "black", &black, &dummy);
104 pmap = XCreateBitmapFromData(dpy, w, curs, 8, 8);
105 invisible = XCreatePixmapCursor(dpy, pmap, pmap, &black, &black, 0, 0);
106 XDefineCursor(dpy, w, invisible);
108 for(len = 1000; len; len--) {
109 if(XGrabPointer(dpy, root, False, ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
110 GrabModeAsync, GrabModeAsync, None, invisible, CurrentTime) == GrabSuccess)
114 if((running = running && (len > 0))) {
115 for(len = 1000; len; len--) {
116 if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
126 /* main event loop */
127 while(running && !XNextEvent(dpy, &ev)) {
128 if(len == 0 && DPMSCapable(dpy)) {
130 DPMSForceLevel(dpy, DPMSModeOff);
132 if(ev.type == KeyPress) {
134 num = XLookupString(&ev.xkey, buf, sizeof buf, &ksym, 0);
135 if(IsKeypadKey(ksym))
136 if(ksym == XK_KP_Enter)
138 else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
139 ksym = (ksym - XK_KP_0) + XK_0;
140 if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
141 || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
142 || IsPrivateKeypadKey(ksym))
149 running = !auth_userokay(getlogin(), NULL, "auth-xlock", passwd);
151 running = strcmp(crypt(passwd, pws), pws);
166 if(num && !iscntrl((int) buf[0]) && (len + num < sizeof passwd)) {
167 memcpy(passwd + len, buf, num);
174 XUngrabPointer(dpy, CurrentTime);
175 XFreePixmap(dpy, pmap);
176 XDestroyWindow(dpy, w);