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/***
This file is part of LockPassword
Copyright (C) 2020-2021 Aleksandr D. Goncharov (Joursoir) <chat@joursoir.net>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
***/
#if defined(DISPLAY)
#include <stdio.h>
#include <string.h>
#include <X11/Xlib.h>
#include "constants.h"
static Atom X_utf8;
static void send_data(Display *dpy, XSelectionRequestEvent *sev,
const char *data)
{
XSelectionEvent ssev;
Atom target = sev->target;
char *an;
an = XGetAtomName(dpy, target);
if(an) {
dbgprint("Request of type '%s'\n", an);
XFree(an);
}
/* All of these should match the values of the request. */
ssev.type = SelectionNotify;
ssev.requestor = sev->requestor;
ssev.selection = sev->selection;
ssev.target = target;
ssev.property = None; // means refusal
ssev.time = sev->time;
if(target == X_utf8) {
an = XGetAtomName(dpy, sev->property);
if(an) {
dbgprint("Sending data, property '%s'\n", sev->requestor, an);
XFree(an);
}
ssev.property = sev->property;
XChangeProperty(dpy, sev->requestor, sev->property, X_utf8, 8,
PropModeReplace, (unsigned char *)data, strlen(data));
}
else {
dbgprint("No valid target. Refuse request.\n");
}
XSendEvent(dpy, sev->requestor, True, NoEventMask, (XEvent *)&ssev);
}
int run_clipboard(const char *data)
{
Display *dpy;
Window owner, root;
int screen;
Atom sel;
XEvent ev;
XSelectionRequestEvent *sev;
dpy = XOpenDisplay(NULL); // means use env $DISPLAY
if(!dpy)
errprint(1, "Open X display failed\n");
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
owner = XCreateSimpleWindow(dpy, root, -10, -10, 1, 1, 0, 0, 0);
sel = XInternAtom(dpy, "CLIPBOARD", False);
X_utf8 = XInternAtom(dpy, "UTF8_STRING", False);
XSetSelectionOwner(dpy, sel, owner, CurrentTime);
for(;;)
{
XNextEvent(dpy, &ev);
switch(ev.type) {
case SelectionClear:
dbgprint("Lost 'CLIPBOARD' ownership\n");
return 2;
case SelectionRequest:
sev = (XSelectionRequestEvent *)&ev.xselectionrequest;
dbgprint("SelectionRequest by 0x%lx\n", sev->requestor);
send_data(dpy, sev, data);
}
}
}
#endif /* defined(DISPLAY) */
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