138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
/* (C)opyright MMIV-MMV Anselm R. Garbe <garbeam at gmail dot com>
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* See LICENSE file for license details.
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*/
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#define _XOPEN_SOURCE 500
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#if HAVE_SHADOW_H
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#include <shadow.h>
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#else
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#include <pwd.h>
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#endif
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#include <ctype.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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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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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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#if HAVE_SHADOW_H
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struct spwd *sp;
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#else
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struct passwd *pw;
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#endif
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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 w;
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XColor black, dummy;
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XEvent ev;
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XSetWindowAttributes wa;
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if((argc > 1) && !strncmp(argv[1], "-v", 3)) {
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fputs("slock-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
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exit(EXIT_SUCCESS);
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}
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if(geteuid() != 0) {
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fputs("slock: cannot retrieve password entry (make sure to suid slock)\n", stderr);
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exit(EXIT_FAILURE);
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}
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#if HAVE_SHADOW_H
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sp = getspnam(getenv("USER"));
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endspent();
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#else
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pw = getpwuid(getuid());
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endpwent();
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#endif
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if(!(dpy = XOpenDisplay(0))) {
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fputs("slock: cannot open display\n", stderr);
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exit(EXIT_FAILURE);
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}
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screen = DefaultScreen(dpy);
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/* init */
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passwd[0] = 0;
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while(XGrabKeyboard(dpy, RootWindow(dpy, screen), True, GrabModeAsync,
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GrabModeAsync, CurrentTime) != GrabSuccess)
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usleep(1000);
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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, RootWindow(dpy, screen), 0, 0,
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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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XSync(dpy, False);
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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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len = strlen(passwd);
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buf[0] = 0;
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num = XLookupString(&ev.xkey, buf, sizeof(buf), &ksym, 0);
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if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
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|| IsMiscFunctionKey(ksym) || IsPFKey(ksym)
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|| IsPrivateKeypadKey(ksym))
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continue;
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/* first check if a control mask is omitted */
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if(ev.xkey.state & ControlMask) {
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switch (ksym) {
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case XK_h:
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case XK_H: ksym = XK_BackSpace;
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break;
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case XK_u:
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case XK_U: passwd[0] = 0;
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continue;
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}
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}
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switch(ksym) {
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case XK_Return:
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#if HAVE_SHADOW_H
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if((running = strncmp(crypt(passwd, sp->sp_pwdp), sp->sp_pwdp, sizeof(passwd))))
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#else
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if((running = strncmp(crypt(passwd, pw->pw_passwd), pw->pw_passwd, sizeof(passwd))))
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#endif
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XBell(dpy, 100);
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passwd[0] = 0;
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break;
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case XK_Escape:
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passwd[0] = 0;
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break;
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case XK_BackSpace:
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if(len)
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passwd[--len] = 0;
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break;
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default:
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if(num && !iscntrl((int) buf[0])) {
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buf[num] = 0;
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if(len)
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strncat(passwd, buf, sizeof(passwd));
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else
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strncpy(passwd, buf, sizeof(passwd));
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}
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break;
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}
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}
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XFreePixmap(dpy, pmap);
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XDestroyWindow(dpy, w);
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XCloseDisplay(dpy);
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return 0;
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}
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