trunk/rdesktop/xclip.c

/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   Protocol services - Clipboard functions
   Copyright (C) Erik Forsberg <forsberg@cendio.se> 2003
   Copyright (C) Matthew Chapman 2003

   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 2 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, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include "rdesktop.h"

#define NUM_TARGETS 6

extern Display *g_display;
extern Window g_wnd;
extern Time g_last_gesturetime;

static Atom clipboard_atom, primary_atom, targets_atom, timestamp_atom;
static Atom rdesktop_clipboard_target_atom, rdesktop_clipboard_formats_atom, incr_atom;
static XSelectionRequestEvent selection_request;
static Atom targets[NUM_TARGETS];
static int have_primary = 0;
static int rdesktop_is_selection_owner = 0;


/* Replace CR-LF to LF (well, rather removing all CR:s) This is done
   in-place. The length is updated. Handles embedded nulls */
static void
crlf2lf(uint8 * data, uint32 * length)
{
        uint8 *dst, *src;
        src = dst = data;
        while (src < data + *length)
        {
                if (*src != '\x0d')
                        *dst++ = *src;
                src++;
        }
        *length = dst - data;
}

/* Translate LF to CR-LF. To do this, we must allocate more memory.  
   The length is updated. */
static uint8 *
lf2crlf(uint8 * data, uint32 * length)
{
        uint8 *result, *p, *o;

        /* Worst case: Every char is LF */
        result = xmalloc(*length * 2);

        p = data;
        o = result;

        while (p < data + *length)
        {
                if (*p == '\x0a')
                        *o++ = '\x0d';
                *o++ = *p++;
        }
        *length = o - result;

        /* Convenience */
        *o++ = '\0';

        return result;
}


static void
xclip_provide_selection(XSelectionRequestEvent * req, Atom type, unsigned int format, uint8 * data,
                        uint32 length)
{
        XEvent xev;

        XChangeProperty(g_display, req->requestor, req->property,
                        type, format, PropModeReplace, data, length);

        xev.xselection.type = SelectionNotify;
        xev.xselection.serial = 0;
        xev.xselection.send_event = True;
        xev.xselection.requestor = req->requestor;
        xev.xselection.selection = req->selection;
        xev.xselection.target = req->target;
        xev.xselection.property = req->property;
        xev.xselection.time = req->time;
        XSendEvent(g_display, req->requestor, False, NoEventMask, &xev);
}

void
xclip_handle_SelectionNotify(XSelectionEvent * event)
{
        unsigned long nitems, bytes_left;
        Atom type, best_target, text_target;
        Atom *supported_targets;
        int res, i, format;
        uint8 *data;

        if (event->property == None)
                goto fail;

        DEBUG_CLIPBOARD(("xclip_handle_SelectionNotify: selection=%s, target=%s, property=%s\n",
                         XGetAtomName(g_display, event->selection),
                         XGetAtomName(g_display, event->target),
                         XGetAtomName(g_display, event->property)));

        if (event->property == None)
                goto fail;

        res = XGetWindowProperty(g_display, g_wnd, rdesktop_clipboard_target_atom,
                                 0, XMaxRequestSize(g_display), True, AnyPropertyType,
                                 &type, &format, &nitems, &bytes_left, &data);

        if (res != Success)
        {
                DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n"));
                goto fail;
        }

        /* Negotiate target format */
        if (event->target == targets_atom)
        {
                /* FIXME: We should choose format here based on what the server wanted */
                best_target = XA_STRING;
                if (type != None)
                {
                        supported_targets = (Atom *) data;
                        text_target = XInternAtom(g_display, "TEXT", False);
                        for (i = 0; i < nitems; i++)
                        {
                                DEBUG_CLIPBOARD(("Target %d: %s\n", i,
                                                 XGetAtomName(g_display, supported_targets[i])));
                                if (supported_targets[i] == text_target)
                                {
                                        DEBUG_CLIPBOARD(("Other party supports TEXT, choosing that as best_target\n"));
                                        best_target = text_target;
                                        break;
                                }
                        }
                        XFree(data);
                }

                XConvertSelection(g_display, primary_atom, best_target,
                                  rdesktop_clipboard_target_atom, g_wnd, event->time);
                return;
        }

        if (type == incr_atom)
        {
                warning("We don't support INCR transfers at this time. Try cutting less data.\n");
                goto fail;
        }

        /* Translate linebreaks, but only if not getting data from
           other rdesktop instance */
        if (event->target != rdesktop_clipboard_formats_atom)
        {
                uint8 *translated_data;
                uint32 length = nitems;

                DEBUG_CLIPBOARD(("Translating linebreaks before sending data\n"));
                translated_data = lf2crlf(data, &length);
                cliprdr_send_data(translated_data, length + 1);
                xfree(translated_data); /* Not the same thing as XFree! */
        }
        else
        {
                cliprdr_send_data(data, nitems + 1);
        }
        XFree(data);

        if (!rdesktop_is_selection_owner)
                cliprdr_send_text_format_announce();
        return;

      fail:
        cliprdr_send_data(NULL, 0);
}

void
xclip_handle_SelectionRequest(XSelectionRequestEvent * event)
{
        unsigned long nitems, bytes_left;
        unsigned char *prop_return;
        uint32 *wanted_format;
        int format, res;
        Atom type;

        DEBUG_CLIPBOARD(("xclip_handle_SelectionRequest: selection=%s, target=%s, property=%s\n",
                         XGetAtomName(g_display, event->selection),
                         XGetAtomName(g_display, event->target),
                         XGetAtomName(g_display, event->property)));

        if (event->target == targets_atom)
        {
                xclip_provide_selection(event, XA_ATOM, 32, (uint8 *) & targets, NUM_TARGETS);
                return;
        }
        else if (event->target == timestamp_atom)
        {
                xclip_provide_selection(event, XA_INTEGER, 32, (uint8 *) & g_last_gesturetime, 1);
                return;
        }
        else if (event->target == rdesktop_clipboard_formats_atom)
        {
                res = XGetWindowProperty(g_display, event->requestor,
                                         rdesktop_clipboard_target_atom, 0, 1, True, XA_INTEGER,
                                         &type, &format, &nitems, &bytes_left, &prop_return);
                wanted_format = (uint32 *) prop_return;
                format = (res == Success) ? *wanted_format : CF_TEXT;
                /* FIXME: Need to free returned data? */
        }
        else
        {
                format = CF_TEXT;
        }

        cliprdr_send_data_request(format);
        selection_request = *event;
        /* wait for data */
}

void
xclip_handle_SelectionClear(void)
{
        DEBUG_CLIPBOARD(("xclip_handle_SelectionClear\n"));
        have_primary = 0;
        XDeleteProperty(g_display, DefaultRootWindow(g_display), rdesktop_clipboard_formats_atom);
        cliprdr_send_text_format_announce();
}

void
xclip_handle_PropertyNotify(XPropertyEvent * event)
{
        unsigned long nitems, bytes_left;
        int format, res;
        uint8 *data;
        Atom type;

        if (event->atom != rdesktop_clipboard_formats_atom)
                return;

        if (have_primary)       /* from us */
                return;

        if (event->state == PropertyNewValue)
        {
                res = XGetWindowProperty(g_display, DefaultRootWindow(g_display),
                                         rdesktop_clipboard_formats_atom, 0,
                                         XMaxRequestSize(g_display), False, XA_STRING, &type,
                                         &format, &nitems, &bytes_left, &data);

                if ((res == Success) && (nitems > 0))
                {
                        cliprdr_send_native_format_announce(data, nitems);
                        rdesktop_is_selection_owner = 1;
                        return;
                }
        }

        /* PropertyDelete, or XGetWindowProperty failed */
        cliprdr_send_text_format_announce();
        rdesktop_is_selection_owner = 0;
}


void
ui_clip_format_announce(uint8 * data, uint32 length)
{
        XSetSelectionOwner(g_display, primary_atom, g_wnd, g_last_gesturetime);
        if (XGetSelectionOwner(g_display, primary_atom) != g_wnd)
        {
                warning("Failed to aquire ownership of PRIMARY clipboard\n");
                return;
        }

        have_primary = 1;
        XChangeProperty(g_display, DefaultRootWindow(g_display),
                        rdesktop_clipboard_formats_atom, XA_STRING, 8, PropModeReplace, data,
                        length);

        XSetSelectionOwner(g_display, clipboard_atom, g_wnd, g_last_gesturetime);
        if (XGetSelectionOwner(g_display, clipboard_atom) != g_wnd)
                warning("Failed to aquire ownership of CLIPBOARD clipboard\n");
}


void
ui_clip_handle_data(uint8 * data, uint32 length)
{
        if (selection_request.target != rdesktop_clipboard_formats_atom)
        {
                uint8 *firstnull;

                /* translate linebreaks */
                crlf2lf(data, &length);

                /* Only send data up to null byte, if any */
                firstnull = (uint8 *)strchr((char*)data, '\0');
                if (firstnull)
                {
                        length = firstnull - data + 1;
                }
        }

        xclip_provide_selection(&selection_request, XA_STRING, 8, data, length - 1);
}

void
ui_clip_request_data(uint32 format)
{
        Window selectionowner;

        DEBUG_CLIPBOARD(("Request from server for format %d\n", format));

        if (rdesktop_is_selection_owner)
        {
                XChangeProperty(g_display, g_wnd, rdesktop_clipboard_target_atom,
                                XA_INTEGER, 32, PropModeReplace, (unsigned char *) &format, 1);

                XConvertSelection(g_display, primary_atom, rdesktop_clipboard_formats_atom,
                                  rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
                return;
        }

        selectionowner = XGetSelectionOwner(g_display, primary_atom);
        if (selectionowner != None)
        {
                XConvertSelection(g_display, primary_atom, targets_atom,
                                  rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
                return;
        }

        /* No PRIMARY, try CLIPBOARD */
        selectionowner = XGetSelectionOwner(g_display, clipboard_atom);
        if (selectionowner != None)
        {
                XConvertSelection(g_display, clipboard_atom, targets_atom,
                                  rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
                return;
        }

        /* No data available */
        cliprdr_send_data(NULL, 0);
}

void
ui_clip_sync(void)
{
        cliprdr_send_text_format_announce();
}


void
xclip_init(void)
{
        if (!cliprdr_init())
                return;

        primary_atom = XInternAtom(g_display, "PRIMARY", False);
        clipboard_atom = XInternAtom(g_display, "CLIPBOARD", False);
        targets_atom = XInternAtom(g_display, "TARGETS", False);
        timestamp_atom = XInternAtom(g_display, "TIMESTAMP", False);
        rdesktop_clipboard_target_atom =
                XInternAtom(g_display, "_RDESKTOP_CLIPBOARD_TARGET", False);
        incr_atom = XInternAtom(g_display, "INCR", False);
        targets[0] = targets_atom;
        targets[1] = XInternAtom(g_display, "TEXT", False);
        targets[2] = XInternAtom(g_display, "UTF8_STRING", False);
        targets[3] = XInternAtom(g_display, "text/unicode", False);
        targets[4] = XInternAtom(g_display, "TIMESTAMP", False);
        targets[5] = XA_STRING;

        /* rdesktop sets _RDESKTOP_CLIPBOARD_FORMATS on the root window when acquiring the clipboard.
           Other interested rdesktops can use this to notify their server of the available formats. */
        rdesktop_clipboard_formats_atom =
                XInternAtom(g_display, "_RDESKTOP_CLIPBOARD_FORMATS", False);
        XSelectInput(g_display, DefaultRootWindow(g_display), PropertyChangeMask);
}
1	/* -- c-basic-offset: 8 --
2	rdesktop: A Remote Desktop Protocol client.
3	Protocol services - Clipboard functions
4	Copyright (C) Erik Forsberg <forsberg@cendio.se> 2003
5	Copyright (C) Matthew Chapman 2003
6
7	This program is free software; you can redistribute it and/or modify
8	it under the terms of the GNU General Public License as published by
9	the Free Software Foundation; either version 2 of the License, or
10	(at your option) any later version.
11
12	This program is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.
16
17	You should have received a copy of the GNU General Public License
18	along with this program; if not, write to the Free Software
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20	*/
21
22	#include <X11/Xlib.h>
23	#include <X11/Xatom.h>
24	#include "rdesktop.h"
25
26	#define NUM_TARGETS 6
27
28	extern Display *g_display;
29	extern Window g_wnd;
30	extern Time g_last_gesturetime;
31
32	static Atom clipboard_atom, primary_atom, targets_atom, timestamp_atom;
33	static Atom rdesktop_clipboard_target_atom, rdesktop_clipboard_formats_atom, incr_atom;
34	static XSelectionRequestEvent selection_request;
35	static Atom targets[NUM_TARGETS];
36	static int have_primary = 0;
37	static int rdesktop_is_selection_owner = 0;
38
39
40	/* Replace CR-LF to LF (well, rather removing all CR:s) This is done
41	in-place. The length is updated. Handles embedded nulls */
42	static void
43	crlf2lf(uint8 * data, uint32 * length)
44	{
45	uint8 dst, src;
46	src = dst = data;
47	while (src < data + *length)
48	{
49	if (*src != '\x0d')
50	dst++ = src;
51	src++;
52	}
53	*length = dst - data;
54	}
55
56	/* Translate LF to CR-LF. To do this, we must allocate more memory.
57	The length is updated. */
58	static uint8 *
59	lf2crlf(uint8 * data, uint32 * length)
60	{
61	uint8 result, p, *o;
62
63	/* Worst case: Every char is LF */
64	result = xmalloc(length 2);
65
66	p = data;
67	o = result;
68
69	while (p < data + *length)
70	{
71	if (*p == '\x0a')
72	*o++ = '\x0d';
73	o++ = p++;
74	}
75	*length = o - result;
76
77	/* Convenience */
78	*o++ = '\0';
79
80	return result;
81	}
82
83
84	static void
85	xclip_provide_selection(XSelectionRequestEvent * req, Atom type, unsigned int format, uint8 * data,
86	uint32 length)
87	{
88	XEvent xev;
89
90	XChangeProperty(g_display, req->requestor, req->property,
91	type, format, PropModeReplace, data, length);
92
93	xev.xselection.type = SelectionNotify;
94	xev.xselection.serial = 0;
95	xev.xselection.send_event = True;
96	xev.xselection.requestor = req->requestor;
97	xev.xselection.selection = req->selection;
98	xev.xselection.target = req->target;
99	xev.xselection.property = req->property;
100	xev.xselection.time = req->time;
101	XSendEvent(g_display, req->requestor, False, NoEventMask, &xev);
102	}
103
104	void
105	xclip_handle_SelectionNotify(XSelectionEvent * event)
106	{
107	unsigned long nitems, bytes_left;
108	Atom type, best_target, text_target;
109	Atom *supported_targets;
110	int res, i, format;
111	uint8 *data;
112
113	if (event->property == None)
114	goto fail;
115
116	DEBUG_CLIPBOARD(("xclip_handle_SelectionNotify: selection=%s, target=%s, property=%s\n",
117	XGetAtomName(g_display, event->selection),
118	XGetAtomName(g_display, event->target),
119	XGetAtomName(g_display, event->property)));
120
121	if (event->property == None)
122	goto fail;
123
124	res = XGetWindowProperty(g_display, g_wnd, rdesktop_clipboard_target_atom,
125	0, XMaxRequestSize(g_display), True, AnyPropertyType,
126	&type, &format, &nitems, &bytes_left, &data);
127
128	if (res != Success)
129	{
130	DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n"));
131	goto fail;
132	}
133
134	/* Negotiate target format */
135	if (event->target == targets_atom)
136	{
137	/* FIXME: We should choose format here based on what the server wanted */
138	best_target = XA_STRING;
139	if (type != None)
140	{
141	supported_targets = (Atom *) data;
142	text_target = XInternAtom(g_display, "TEXT", False);
143	for (i = 0; i < nitems; i++)
144	{
145	DEBUG_CLIPBOARD(("Target %d: %s\n", i,
146	XGetAtomName(g_display, supported_targets[i])));
147	if (supported_targets[i] == text_target)
148	{
149	DEBUG_CLIPBOARD(("Other party supports TEXT, choosing that as best_target\n"));
150	best_target = text_target;
151	break;
152	}
153	}
154	XFree(data);
155	}
156
157	XConvertSelection(g_display, primary_atom, best_target,
158	rdesktop_clipboard_target_atom, g_wnd, event->time);
159	return;
160	}
161
162	if (type == incr_atom)
163	{
164	warning("We don't support INCR transfers at this time. Try cutting less data.\n");
165	goto fail;
166	}
167
168	/* Translate linebreaks, but only if not getting data from
169	other rdesktop instance */
170	if (event->target != rdesktop_clipboard_formats_atom)
171	{
172	uint8 *translated_data;
173	uint32 length = nitems;
174
175	DEBUG_CLIPBOARD(("Translating linebreaks before sending data\n"));
176	translated_data = lf2crlf(data, &length);
177	cliprdr_send_data(translated_data, length + 1);
178	xfree(translated_data); /* Not the same thing as XFree! */
179	}
180	else
181	{
182	cliprdr_send_data(data, nitems + 1);
183	}
184	XFree(data);
185
186	if (!rdesktop_is_selection_owner)
187	cliprdr_send_text_format_announce();
188	return;
189
190	fail:
191	cliprdr_send_data(NULL, 0);
192	}
193
194	void
195	xclip_handle_SelectionRequest(XSelectionRequestEvent * event)
196	{
197	unsigned long nitems, bytes_left;
198	unsigned char *prop_return;
199	uint32 *wanted_format;
200	int format, res;
201	Atom type;
202
203	DEBUG_CLIPBOARD(("xclip_handle_SelectionRequest: selection=%s, target=%s, property=%s\n",
204	XGetAtomName(g_display, event->selection),
205	XGetAtomName(g_display, event->target),
206	XGetAtomName(g_display, event->property)));
207
208	if (event->target == targets_atom)
209	{
210	xclip_provide_selection(event, XA_ATOM, 32, (uint8 *) & targets, NUM_TARGETS);
211	return;
212	}
213	else if (event->target == timestamp_atom)
214	{
215	xclip_provide_selection(event, XA_INTEGER, 32, (uint8 *) & g_last_gesturetime, 1);
216	return;
217	}
218	else if (event->target == rdesktop_clipboard_formats_atom)
219	{
220	res = XGetWindowProperty(g_display, event->requestor,
221	rdesktop_clipboard_target_atom, 0, 1, True, XA_INTEGER,
222	&type, &format, &nitems, &bytes_left, &prop_return);
223	wanted_format = (uint32 *) prop_return;
224	format = (res == Success) ? *wanted_format : CF_TEXT;
225	/* FIXME: Need to free returned data? */
226	}
227	else
228	{
229	format = CF_TEXT;
230	}
231
232	cliprdr_send_data_request(format);
233	selection_request = *event;
234	/* wait for data */
235	}
236
237	void
238	xclip_handle_SelectionClear(void)
239	{
240	DEBUG_CLIPBOARD(("xclip_handle_SelectionClear\n"));
241	have_primary = 0;
242	XDeleteProperty(g_display, DefaultRootWindow(g_display), rdesktop_clipboard_formats_atom);
243	cliprdr_send_text_format_announce();
244	}
245
246	void
247	xclip_handle_PropertyNotify(XPropertyEvent * event)
248	{
249	unsigned long nitems, bytes_left;
250	int format, res;
251	uint8 *data;
252	Atom type;
253
254	if (event->atom != rdesktop_clipboard_formats_atom)
255	return;
256
257	if (have_primary) /* from us */
258	return;
259
260	if (event->state == PropertyNewValue)
261	{
262	res = XGetWindowProperty(g_display, DefaultRootWindow(g_display),
263	rdesktop_clipboard_formats_atom, 0,
264	XMaxRequestSize(g_display), False, XA_STRING, &type,
265	&format, &nitems, &bytes_left, &data);
266
267	if ((res == Success) && (nitems > 0))
268	{
269	cliprdr_send_native_format_announce(data, nitems);
270	rdesktop_is_selection_owner = 1;
271	return;
272	}
273	}
274
275	/* PropertyDelete, or XGetWindowProperty failed */
276	cliprdr_send_text_format_announce();
277	rdesktop_is_selection_owner = 0;
278	}
279
280
281	void
282	ui_clip_format_announce(uint8 * data, uint32 length)
283	{
284	XSetSelectionOwner(g_display, primary_atom, g_wnd, g_last_gesturetime);
285	if (XGetSelectionOwner(g_display, primary_atom) != g_wnd)
286	{
287	warning("Failed to aquire ownership of PRIMARY clipboard\n");
288	return;
289	}
290
291	have_primary = 1;
292	XChangeProperty(g_display, DefaultRootWindow(g_display),
293	rdesktop_clipboard_formats_atom, XA_STRING, 8, PropModeReplace, data,
294	length);
295
296	XSetSelectionOwner(g_display, clipboard_atom, g_wnd, g_last_gesturetime);
297	if (XGetSelectionOwner(g_display, clipboard_atom) != g_wnd)
298	warning("Failed to aquire ownership of CLIPBOARD clipboard\n");
299	}
300
301
302	void
303	ui_clip_handle_data(uint8 * data, uint32 length)
304	{
305	if (selection_request.target != rdesktop_clipboard_formats_atom)
306	{
307	uint8 *firstnull;
308
309	/* translate linebreaks */
310	crlf2lf(data, &length);
311
312	/* Only send data up to null byte, if any */
313	firstnull = (uint8 )strchr((char)data, '\0');
314	if (firstnull)
315	{
316	length = firstnull - data + 1;
317	}
318	}
319
320	xclip_provide_selection(&selection_request, XA_STRING, 8, data, length - 1);
321	}
322
323	void
324	ui_clip_request_data(uint32 format)
325	{
326	Window selectionowner;
327
328	DEBUG_CLIPBOARD(("Request from server for format %d\n", format));
329
330	if (rdesktop_is_selection_owner)
331	{
332	XChangeProperty(g_display, g_wnd, rdesktop_clipboard_target_atom,
333	XA_INTEGER, 32, PropModeReplace, (unsigned char *) &format, 1);
334
335	XConvertSelection(g_display, primary_atom, rdesktop_clipboard_formats_atom,
336	rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
337	return;
338	}
339
340	selectionowner = XGetSelectionOwner(g_display, primary_atom);
341	if (selectionowner != None)
342	{
343	XConvertSelection(g_display, primary_atom, targets_atom,
344	rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
345	return;
346	}
347
348	/* No PRIMARY, try CLIPBOARD */
349	selectionowner = XGetSelectionOwner(g_display, clipboard_atom);
350	if (selectionowner != None)
351	{
352	XConvertSelection(g_display, clipboard_atom, targets_atom,
353	rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
354	return;
355	}
356
357	/* No data available */
358	cliprdr_send_data(NULL, 0);
359	}
360
361	void
362	ui_clip_sync(void)
363	{
364	cliprdr_send_text_format_announce();
365	}
366
367
368	void
369	xclip_init(void)
370	{
371	if (!cliprdr_init())
372	return;
373
374	primary_atom = XInternAtom(g_display, "PRIMARY", False);
375	clipboard_atom = XInternAtom(g_display, "CLIPBOARD", False);
376	targets_atom = XInternAtom(g_display, "TARGETS", False);
377	timestamp_atom = XInternAtom(g_display, "TIMESTAMP", False);
378	rdesktop_clipboard_target_atom =
379	XInternAtom(g_display, "_RDESKTOP_CLIPBOARD_TARGET", False);
380	incr_atom = XInternAtom(g_display, "INCR", False);
381	targets[0] = targets_atom;
382	targets[1] = XInternAtom(g_display, "TEXT", False);
383	targets[2] = XInternAtom(g_display, "UTF8_STRING", False);
384	targets[3] = XInternAtom(g_display, "text/unicode", False);
385	targets[4] = XInternAtom(g_display, "TIMESTAMP", False);
386	targets[5] = XA_STRING;
387
388	/* rdesktop sets _RDESKTOP_CLIPBOARD_FORMATS on the root window when acquiring the clipboard.
389	Other interested rdesktops can use this to notify their server of the available formats. */
390	rdesktop_clipboard_formats_atom =
391	XInternAtom(g_display, "_RDESKTOP_CLIPBOARD_FORMATS", False);
392	XSelectInput(g_display, DefaultRootWindow(g_display), PropertyChangeMask);
393	}