rdesktop/trunk/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, "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	matthewc	432	/* -- 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	jsorg71	450	extern Display *g_display;
29			extern Window g_wnd;
30			extern Time g_last_gesturetime;
31	matthewc	432
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	astrand	551
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	matthewc	432	static void
43	astrand	551	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	astrand	435	xclip_provide_selection(XSelectionRequestEvent * req, Atom type, unsigned int format, uint8 * data,
86			uint32 length)
87	matthewc	432	{
88			XEvent xev;
89
90	jsorg71	450	XChangeProperty(g_display, req->requestor, req->property,
91	matthewc	432	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	jsorg71	450	XSendEvent(g_display, req->requestor, False, NoEventMask, &xev);
102	matthewc	432	}
103
104	astrand	462	void
105	matthewc	432	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	jsorg71	450	XGetAtomName(g_display, event->selection),
118			XGetAtomName(g_display, event->target),
119			XGetAtomName(g_display, event->property)));
120	matthewc	432
121			if (event->property == None)
122			goto fail;
123
124	jsorg71	450	res = XGetWindowProperty(g_display, g_wnd, rdesktop_clipboard_target_atom,
125			0, XMaxRequestSize(g_display), True, AnyPropertyType,
126	matthewc	432	&type, &format, &nitems, &bytes_left, &data);
127
128			if (res != Success)
129			{
130			DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n"));
131			goto fail;
132			}
133
134	astrand	551	/* Negotiate target format */
135	matthewc	432	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	jsorg71	450	text_target = XInternAtom(g_display, "TEXT", False);
143	matthewc	432	for (i = 0; i < nitems; i++)
144			{
145	astrand	435	DEBUG_CLIPBOARD(("Target %d: %s\n", i,
146	jsorg71	450	XGetAtomName(g_display, supported_targets[i])));
147	matthewc	432	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	astrand	551	break;
152	matthewc	432	}
153			}
154			XFree(data);
155			}
156
157	jsorg71	450	XConvertSelection(g_display, primary_atom, best_target,
158			rdesktop_clipboard_target_atom, g_wnd, event->time);
159	matthewc	432	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	astrand	551	/* 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	matthewc	432	XFree(data);
185
186			if (!rdesktop_is_selection_owner)
187			cliprdr_send_text_format_announce();
188			return;
189
190	astrand	435	fail:
191	matthewc	432	cliprdr_send_data(NULL, 0);
192			}
193
194	astrand	462	void
195	astrand	435	xclip_handle_SelectionRequest(XSelectionRequestEvent * event)
196	matthewc	432	{
197			unsigned long nitems, bytes_left;
198	astrand	465	unsigned char *prop_return;
199	matthewc	432	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	jsorg71	450	XGetAtomName(g_display, event->selection),
205			XGetAtomName(g_display, event->target),
206			XGetAtomName(g_display, event->property)));
207	matthewc	432
208			if (event->target == targets_atom)
209			{
210	astrand	435	xclip_provide_selection(event, XA_ATOM, 32, (uint8 *) & targets, NUM_TARGETS);
211	matthewc	432	return;
212			}
213			else if (event->target == timestamp_atom)
214			{
215	jsorg71	450	xclip_provide_selection(event, XA_INTEGER, 32, (uint8 *) & g_last_gesturetime, 1);
216	matthewc	432	return;
217			}
218			else if (event->target == rdesktop_clipboard_formats_atom)
219			{
220	jsorg71	450	res = XGetWindowProperty(g_display, event->requestor,
221	astrand	435	rdesktop_clipboard_target_atom, 0, 1, True, XA_INTEGER,
222	astrand	468	&type, &format, &nitems, &bytes_left, &prop_return);
223	astrand	465	wanted_format = (uint32 *) prop_return;
224	matthewc	432	format = (res == Success) ? *wanted_format : CF_TEXT;
225	astrand	465	/* FIXME: Need to free returned data? */
226	matthewc	432	}
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	astrand	462	void
238	matthewc	432	xclip_handle_SelectionClear(void)
239			{
240			DEBUG_CLIPBOARD(("xclip_handle_SelectionClear\n"));
241			have_primary = 0;
242	jsorg71	450	XDeleteProperty(g_display, DefaultRootWindow(g_display), rdesktop_clipboard_formats_atom);
243	matthewc	432	cliprdr_send_text_format_announce();
244			}
245
246	astrand	462	void
247	astrand	435	xclip_handle_PropertyNotify(XPropertyEvent * event)
248	matthewc	432	{
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	astrand	435	if (have_primary) /* from us */
258	matthewc	432	return;
259
260			if (event->state == PropertyNewValue)
261			{
262	jsorg71	450	res = XGetWindowProperty(g_display, DefaultRootWindow(g_display),
263	astrand	435	rdesktop_clipboard_formats_atom, 0,
264	astrand	456	XMaxRequestSize(g_display), False, XA_STRING, &type,
265			&format, &nitems, &bytes_left, &data);
266	matthewc	432
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	astrand	542	ui_clip_format_announce(uint8 * data, uint32 length)
283	matthewc	432	{
284	jsorg71	450	XSetSelectionOwner(g_display, primary_atom, g_wnd, g_last_gesturetime);
285			if (XGetSelectionOwner(g_display, primary_atom) != g_wnd)
286	matthewc	432	{
287			warning("Failed to aquire ownership of PRIMARY clipboard\n");
288			return;
289			}
290
291			have_primary = 1;
292	jsorg71	450	XChangeProperty(g_display, DefaultRootWindow(g_display),
293	astrand	435	rdesktop_clipboard_formats_atom, XA_STRING, 8, PropModeReplace, data,
294			length);
295	matthewc	432
296	jsorg71	450	XSetSelectionOwner(g_display, clipboard_atom, g_wnd, g_last_gesturetime);
297			if (XGetSelectionOwner(g_display, clipboard_atom) != g_wnd)
298	matthewc	432	warning("Failed to aquire ownership of CLIPBOARD clipboard\n");
299			}
300
301
302			void
303	astrand	542	ui_clip_handle_data(uint8 * data, uint32 length)
304	matthewc	432	{
305	astrand	551	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	astrand	608	firstnull = (uint8 ) strchr((char ) data, '\0');
314	astrand	551	if (firstnull)
315			{
316			length = firstnull - data + 1;
317			}
318			}
319
320	astrand	435	xclip_provide_selection(&selection_request, XA_STRING, 8, data, length - 1);
321	matthewc	432	}
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	jsorg71	450	XChangeProperty(g_display, g_wnd, rdesktop_clipboard_target_atom,
333	matthewc	432	XA_INTEGER, 32, PropModeReplace, (unsigned char *) &format, 1);
334
335	jsorg71	450	XConvertSelection(g_display, primary_atom, rdesktop_clipboard_formats_atom,
336			rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
337	matthewc	432	return;
338			}
339
340	jsorg71	450	selectionowner = XGetSelectionOwner(g_display, primary_atom);
341	matthewc	432	if (selectionowner != None)
342			{
343	jsorg71	450	XConvertSelection(g_display, primary_atom, targets_atom,
344			rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
345	matthewc	432	return;
346			}
347
348			/* No PRIMARY, try CLIPBOARD */
349	jsorg71	450	selectionowner = XGetSelectionOwner(g_display, clipboard_atom);
350	matthewc	432	if (selectionowner != None)
351			{
352	jsorg71	450	XConvertSelection(g_display, clipboard_atom, targets_atom,
353			rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
354	matthewc	432	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	jsorg71	450	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	astrand	456	rdesktop_clipboard_target_atom =
379			XInternAtom(g_display, "_RDESKTOP_CLIPBOARD_TARGET", False);
380	jsorg71	450	incr_atom = XInternAtom(g_display, "INCR", False);
381	matthewc	432	targets[0] = targets_atom;
382	jsorg71	450	targets[1] = XInternAtom(g_display, "TEXT", False);
383	forsberg	707	targets[2] = XInternAtom(g_display, "STRING", False);
384	jsorg71	450	targets[3] = XInternAtom(g_display, "text/unicode", False);
385			targets[4] = XInternAtom(g_display, "TIMESTAMP", False);
386	matthewc	432	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	astrand	435	rdesktop_clipboard_formats_atom =
391	jsorg71	450	XInternAtom(g_display, "_RDESKTOP_CLIPBOARD_FORMATS", False);
392			XSelectInput(g_display, DefaultRootWindow(g_display), PropertyChangeMask);
393	matthewc	432	}