mirror of https://github.com/9wm/xss.git
124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/* xkeygrab -- grab keyboard and mouse, writing typed lines to stdout
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* Copyright (C) 2008 Neale Pickett <neale@woozle.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <poll.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.h>
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#include "obj.h"
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int
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main(int argc, char *argv[])
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{
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Display *display = NULL;
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if (argc != 1) {
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(void)fprintf(stderr, "Usage: %s\n", argv[0]);
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return 64; /* EX_USAGE */
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}
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try {
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Window root;
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char obuf[4096];
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int obuflen = 0;
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struct pollfd fds[2];
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if (! (display = XOpenDisplay(NULL))) raise("cannot open display");
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root = DefaultRootWindow(display);
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if (GrabSuccess != XGrabPointer(display, root,
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False, ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
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GrabModeAsync, GrabModeAsync,
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None, None, CurrentTime)) {
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raise("cannot grab pointer");
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}
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if (GrabSuccess != XGrabKeyboard(display, root,
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True,
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GrabModeAsync, GrabModeAsync,
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CurrentTime)) {
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raise("cannot grab keyboard");
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}
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fds[0].fd = STDOUT_FILENO;
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fds[0].events = 0;
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fds[1].fd = ConnectionNumber(display);
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fds[1].events = POLLIN;
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while (1) {
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int ret;
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ret = poll(fds, 2, -1);
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if (fds[0].revents & POLLERR) {
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break;
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}
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if (fds[1].revents & POLLIN) {
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XEvent event;
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(void)XNextEvent(display, &event);
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if (KeyPress == event.type) {
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char buf[32];
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KeySym ksym;
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int i;
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if (obuflen == sizeof(obuf)) continue;
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i = XLookupString(&event.xkey, buf, sizeof(buf), &ksym, NULL);
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switch (ksym) {
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case XK_Return:
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if (obuflen) {
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(void)write(STDOUT_FILENO, obuf, obuflen);
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(void)write(STDOUT_FILENO, "\n", 1);
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obuflen = 0;
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}
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break;
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case XK_BackSpace:
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if (obuflen) obuflen -= 1;
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break;
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default:
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if (1 == i) {
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switch (buf[0]) {
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case '\025':
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obuflen = 0;
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break;
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case ' ' ... '~':
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obuf[obuflen++] = buf[0];
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break;
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}
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}
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break;
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}
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}
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}
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}
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} while (0);
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if (display) {
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(void)XUngrabKeyboard(display, CurrentTime);
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(void)XUngrabPointer(display, CurrentTime);
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(void)XCloseDisplay(display);
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}
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except {
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(void)fprintf(stderr, "Error: %s\n", exception);
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return 69; /* EX_UNAVAILABLE */
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}
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return 0;
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}
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