190 lines
4.7 KiB
C
190 lines
4.7 KiB
C
/*
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moolticute-pass
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Copyright (C) 2018 Dominik Meyer
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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
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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/**
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* @file x11_clipboard.c
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* @brief source file for all x11 functions
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* @author Dominik Meyer <dmeyer@federationhq.de>
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* @copyright 2018 by Dominik Meyer
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*/
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#include <x11_clipboard.h>
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#include <X11/Xutil.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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/**
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* @brief initialize the x11 context
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*
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* @return an initialized x11_ctx structure
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*/
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struct x11_ctx *x11_init()
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{
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struct x11_ctx *ctx = (struct x11_ctx *) calloc(sizeof(struct x11_ctx), 1);
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// open the X11 display
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ctx->dpy = XOpenDisplay(NULL);
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if (!ctx->dpy)
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{
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fprintf(stderr, "Could not open X display\n");
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return NULL;
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}
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ctx->screen = DefaultScreen(ctx->dpy);
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ctx->root = RootWindow(ctx->dpy, ctx->screen);
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/* We need a window to receive messages from other clients. */
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ctx->owner = XCreateSimpleWindow(ctx->dpy, ctx->root, -10, -10, 1, 1, 0, 0, 0);
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XSelectInput(ctx->dpy, ctx->owner, SelectionClear | SelectionRequest);
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ctx->sel = XInternAtom(ctx->dpy, "CLIPBOARD", False);
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ctx->utf8 = XInternAtom(ctx->dpy, "UTF8_STRING", False);
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XMapWindow(ctx->dpy, ctx->owner);
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XFlush(ctx->dpy);
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ctx->timeout = X11_DEFAULT_TIMEOUT;
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return ctx;
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}
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/**
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* @brief deny a clipboard request
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*
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* @param ctx - the x11 context
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*/
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void send_no(struct x11_ctx *ctx)
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{
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XSelectionEvent ssev;
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char *an;
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if (ctx == NULL)
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{
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return;
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}
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an = XGetAtomName(ctx->dpy, ctx->sev->target);
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if (an)
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XFree(an);
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/* All of these should match the values of the request. */
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ssev.type = SelectionNotify;
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ssev.requestor = ctx->sev->requestor;
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ssev.selection = ctx->sev->selection;
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ssev.target = ctx->sev->target;
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ssev.property = None; /* signifies "nope" */
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ssev.time = ctx->sev->time;
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XSendEvent(ctx->dpy, ctx->sev->requestor, True, NoEventMask, (XEvent *)&ssev);
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}
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/**
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* @brief send an utf8 string on a clipboard request
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*
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* @param ctx - the x11 context
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* @param text - text to send on clipboard request
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*/
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void send_utf8(struct x11_ctx *ctx, char *text)
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{
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XSelectionEvent ssev;
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char *an;
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an = XGetAtomName(ctx->dpy, ctx->sev->property);
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printf("Sending data to window 0x%lx, property '%s'\n", ctx->sev->requestor, an);
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if (an)
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XFree(an);
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XChangeProperty(ctx->dpy, ctx->sev->requestor, ctx->sev->property, ctx->utf8, 8, PropModeReplace,
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(const unsigned char*) text, strlen(text));
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ssev.type = SelectionNotify;
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ssev.requestor = ctx->sev->requestor;
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ssev.selection = ctx->sev->selection;
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ssev.target = ctx->sev->target;
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ssev.property = ctx->sev->property;
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ssev.time = ctx->sev->time;
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XSendEvent(ctx->dpy, ctx->sev->requestor, True, NoEventMask, (XEvent *)&ssev);
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}
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/**
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* @brief request the clipboard and wait for requests
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*
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* @param ctx - x11 context
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* @param text - the text to copy to clipboard
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*
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* @return 0 - everything is fine
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* @return <0 - error occured
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*/
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int x11_put_clipboard(struct x11_ctx *ctx, char *text)
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{
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int x11_fd;
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fd_set in_fds;
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struct timeval tv;
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if (ctx == NULL || text == NULL )
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{
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return -1;
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}
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XSetSelectionOwner(ctx->dpy, ctx->sel, ctx->owner, CurrentTime);
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x11_fd = ConnectionNumber(ctx->dpy);
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while(1)
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{
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FD_ZERO(&in_fds);
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FD_SET(x11_fd, &in_fds);
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// Set our timer. One second sounds good.
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tv.tv_usec = 0;
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tv.tv_sec = 20;
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// Wait for sX Event or a Timer
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if (select(x11_fd+1, &in_fds, 0, 0, &tv))
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{
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while(XPending(ctx->dpy))
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{
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XNextEvent(ctx->dpy, &ctx->ev);
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switch (ctx->ev.type)
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{
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case SelectionClear:
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return 1;
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break;
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case SelectionRequest:
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ctx->sev = (XSelectionRequestEvent*)&ctx->ev.xselectionrequest;
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/* Property is set to None by "obsolete" clients. */
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if (ctx->sev->target != ctx->utf8 || ctx->sev->property == None)
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send_no(ctx);
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else
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send_utf8(ctx, text);
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break;
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}
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}
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}
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else
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{
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break;
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}
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}
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return 0;
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}
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