mirror of git://git.suckless.org/slock
93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
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/* (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
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#include <shadow.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 buf[32], passwd[256];
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int num, prev_nitem;
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struct spwd *sp;
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unsigned int i, len;
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Bool running = True;
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KeySym ksym;
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Display *dpy;
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XEvent ev;
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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(!(sp = getspnam(getenv("USER")))) {
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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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endspent();
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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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/* init */
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passwd[0] = 0;
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while(XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
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GrabModeAsync, CurrentTime) != GrabSuccess)
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usleep(1000);
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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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running = strncmp(crypt(passwd, sp->sp_pwdp), sp->sp_pwdp, sizeof(passwd));
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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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XCloseDisplay(dpy);
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return 0;
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}
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