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;

static int g_waiting_for_INCR = 0;
static uint8 *g_clip_buffer = 0;
static uint32 g_clip_buflen = 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);
}

#ifndef MAKE_PROTO
void
xclip_handle_SelectionNotify(XSelectionEvent * event)
{
        unsigned long nitems, bytes_left;
        XWindowAttributes wa;
        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), False, AnyPropertyType,
                                 &type, &format, &nitems, &bytes_left, &data);

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


        if (type == incr_atom)
        {
                DEBUG_CLIPBOARD(("Received INCR.\n"));

                XGetWindowAttributes(g_display, g_wnd, &wa);
                if ((wa.your_event_mask | PropertyChangeMask) != wa.your_event_mask)
                {
                        XSelectInput(g_display, g_wnd, (wa.your_event_mask | PropertyChangeMask));
                }
                XDeleteProperty(g_display, g_wnd, rdesktop_clipboard_target_atom);
                XFree(data);
                g_waiting_for_INCR = 1;
                return;
        } 
        
        XDeleteProperty(g_display, g_wnd, rdesktop_clipboard_target_atom);
                
        /* 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;
        }

        /* 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_simple_native_format_announce(CF_TEXT);
        return;

 fail:
        XDeleteProperty(g_display, g_wnd, rdesktop_clipboard_target_atom);
        XFree(data);
        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_simple_native_format_announce(CF_TEXT);
}

void
xclip_handle_PropertyNotify(XPropertyEvent * event)
{
        unsigned long nitems; 
        unsigned long offset = 0;
        unsigned long bytes_left = 1;
        int format, res;
        XWindowAttributes wa;
        uint8 *data;
        Atom type;

        if (event->state == PropertyNewValue && g_waiting_for_INCR)
        {
                DEBUG_CLIPBOARD(("x_clip_handle_PropertyNotify: g_waiting_for_INCR != 0\n"));

                while (bytes_left > 0) {
                        if ((XGetWindowProperty(g_display, g_wnd, rdesktop_clipboard_target_atom, offset,
                                                4096L, False, AnyPropertyType,
                                                &type, &format, &nitems, &bytes_left, &data) != Success))
                        {
                                XFree(data);
                                return;
                        }

                        if (nitems == 0)
                        {
                                XGetWindowAttributes(g_display, g_wnd, &wa);
                                XSelectInput(g_display, g_wnd, (wa.your_event_mask ^ PropertyChangeMask));
                                XFree(data);
                                g_waiting_for_INCR = 0;

                                if (g_clip_buflen > 0)
                                {
                                        cliprdr_send_data(g_clip_buffer, g_clip_buflen + 1);

                                        if (!rdesktop_is_selection_owner)
                                                cliprdr_send_simple_native_format_announce(CF_TEXT);

                                        xfree(g_clip_buffer);
                                        g_clip_buffer = 0;
                                        g_clip_buflen = 0;
                                }
                        }
                        else
                        {
                                uint8 *translated_data;
                                uint32 length = nitems;
                                uint8 *tmp;

                                offset += (length/4);
                                DEBUG_CLIPBOARD(("Translating linebreaks before sending data\n"));
                                translated_data = lf2crlf(data, &length);

                                tmp = xmalloc(length + g_clip_buflen);
                                strncpy((char *) tmp, (char *) g_clip_buffer, g_clip_buflen);
                                xfree(g_clip_buffer);

                                strncpy((char *) (tmp + g_clip_buflen), (char *) translated_data, length);
                                xfree(translated_data);

                                g_clip_buffer = tmp;
                                g_clip_buflen += length;

                                XFree(data);
                        }
                }
                XDeleteProperty(g_display, g_wnd, rdesktop_clipboard_target_atom);
        }

        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_simple_native_format_announce(CF_TEXT);
        rdesktop_is_selection_owner = 0;
}
#endif


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_simple_native_format_announce(CF_TEXT);
}


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	913	static int g_waiting_for_INCR = 0;
40			static uint8 *g_clip_buffer = 0;
41			static uint32 g_clip_buflen = 0;
42	astrand	551
43			/* Replace CR-LF to LF (well, rather removing all CR:s) This is done
44			in-place. The length is updated. Handles embedded nulls */
45	matthewc	432	static void
46	astrand	551	crlf2lf(uint8 * data, uint32 * length)
47			{
48			uint8 dst, src;
49			src = dst = data;
50			while (src < data + *length)
51			{
52			if (*src != '\x0d')
53			dst++ = src;
54			src++;
55			}
56			*length = dst - data;
57			}
58
59			/* Translate LF to CR-LF. To do this, we must allocate more memory.
60			The length is updated. */
61			static uint8 *
62			lf2crlf(uint8 * data, uint32 * length)
63			{
64			uint8 result, p, *o;
65
66			/* Worst case: Every char is LF */
67			result = xmalloc(length 2);
68
69			p = data;
70			o = result;
71
72			while (p < data + *length)
73			{
74			if (*p == '\x0a')
75			*o++ = '\x0d';
76			o++ = p++;
77			}
78			*length = o - result;
79
80			/* Convenience */
81			*o++ = '\0';
82
83			return result;
84			}
85
86
87			static void
88	astrand	435	xclip_provide_selection(XSelectionRequestEvent * req, Atom type, unsigned int format, uint8 * data,
89			uint32 length)
90	matthewc	432	{
91			XEvent xev;
92
93	jsorg71	450	XChangeProperty(g_display, req->requestor, req->property,
94	matthewc	432	type, format, PropModeReplace, data, length);
95
96			xev.xselection.type = SelectionNotify;
97			xev.xselection.serial = 0;
98			xev.xselection.send_event = True;
99			xev.xselection.requestor = req->requestor;
100			xev.xselection.selection = req->selection;
101			xev.xselection.target = req->target;
102			xev.xselection.property = req->property;
103			xev.xselection.time = req->time;
104	jsorg71	450	XSendEvent(g_display, req->requestor, False, NoEventMask, &xev);
105	matthewc	432	}
106
107	astrand	942	#ifndef MAKE_PROTO
108	astrand	462	void
109	matthewc	432	xclip_handle_SelectionNotify(XSelectionEvent * event)
110			{
111			unsigned long nitems, bytes_left;
112	astrand	913	XWindowAttributes wa;
113	matthewc	432	Atom type, best_target, text_target;
114			Atom *supported_targets;
115			int res, i, format;
116			uint8 *data;
117
118			if (event->property == None)
119			goto fail;
120
121			DEBUG_CLIPBOARD(("xclip_handle_SelectionNotify: selection=%s, target=%s, property=%s\n",
122	jsorg71	450	XGetAtomName(g_display, event->selection),
123			XGetAtomName(g_display, event->target),
124			XGetAtomName(g_display, event->property)));
125	matthewc	432
126			if (event->property == None)
127			goto fail;
128
129	jsorg71	450	res = XGetWindowProperty(g_display, g_wnd, rdesktop_clipboard_target_atom,
130	forsberg	1026	0, XMaxRequestSize(g_display), False, AnyPropertyType,
131	matthewc	432	&type, &format, &nitems, &bytes_left, &data);
132
133			if (res != Success)
134			{
135			DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n"));
136			goto fail;
137			}
138
139	forsberg	1026
140			if (type == incr_atom)
141			{
142			DEBUG_CLIPBOARD(("Received INCR.\n"));
143
144			XGetWindowAttributes(g_display, g_wnd, &wa);
145			if ((wa.your_event_mask \| PropertyChangeMask) != wa.your_event_mask)
146			{
147			XSelectInput(g_display, g_wnd, (wa.your_event_mask \| PropertyChangeMask));
148			}
149			XDeleteProperty(g_display, g_wnd, rdesktop_clipboard_target_atom);
150			XFree(data);
151			g_waiting_for_INCR = 1;
152			return;
153			}
154
155			XDeleteProperty(g_display, g_wnd, rdesktop_clipboard_target_atom);
156
157	astrand	551	/* Negotiate target format */
158	matthewc	432	if (event->target == targets_atom)
159			{
160			/* FIXME: We should choose format here based on what the server wanted */
161			best_target = XA_STRING;
162			if (type != None)
163			{
164			supported_targets = (Atom *) data;
165	jsorg71	450	text_target = XInternAtom(g_display, "TEXT", False);
166	matthewc	432	for (i = 0; i < nitems; i++)
167			{
168	astrand	435	DEBUG_CLIPBOARD(("Target %d: %s\n", i,
169	jsorg71	450	XGetAtomName(g_display, supported_targets[i])));
170	matthewc	432	if (supported_targets[i] == text_target)
171			{
172			DEBUG_CLIPBOARD(("Other party supports TEXT, choosing that as best_target\n"));
173			best_target = text_target;
174	astrand	551	break;
175	matthewc	432	}
176			}
177			XFree(data);
178			}
179
180	jsorg71	450	XConvertSelection(g_display, primary_atom, best_target,
181			rdesktop_clipboard_target_atom, g_wnd, event->time);
182	matthewc	432	return;
183			}
184
185	astrand	551	/* Translate linebreaks, but only if not getting data from
186			other rdesktop instance */
187			if (event->target != rdesktop_clipboard_formats_atom)
188			{
189			uint8 *translated_data;
190			uint32 length = nitems;
191
192			DEBUG_CLIPBOARD(("Translating linebreaks before sending data\n"));
193			translated_data = lf2crlf(data, &length);
194			cliprdr_send_data(translated_data, length + 1);
195			xfree(translated_data); /* Not the same thing as XFree! */
196			}
197			else
198			{
199			cliprdr_send_data(data, nitems + 1);
200			}
201	matthewc	432	XFree(data);
202
203			if (!rdesktop_is_selection_owner)
204	forsberg	1025	cliprdr_send_simple_native_format_announce(CF_TEXT);
205	matthewc	432	return;
206
207	forsberg	1026	fail:
208			XDeleteProperty(g_display, g_wnd, rdesktop_clipboard_target_atom);
209			XFree(data);
210	matthewc	432	cliprdr_send_data(NULL, 0);
211			}
212
213	astrand	462	void
214	astrand	435	xclip_handle_SelectionRequest(XSelectionRequestEvent * event)
215	matthewc	432	{
216			unsigned long nitems, bytes_left;
217	astrand	465	unsigned char *prop_return;
218	matthewc	432	uint32 *wanted_format;
219			int format, res;
220			Atom type;
221
222			DEBUG_CLIPBOARD(("xclip_handle_SelectionRequest: selection=%s, target=%s, property=%s\n",
223	jsorg71	450	XGetAtomName(g_display, event->selection),
224			XGetAtomName(g_display, event->target),
225			XGetAtomName(g_display, event->property)));
226	matthewc	432
227			if (event->target == targets_atom)
228			{
229	astrand	435	xclip_provide_selection(event, XA_ATOM, 32, (uint8 *) & targets, NUM_TARGETS);
230	matthewc	432	return;
231			}
232			else if (event->target == timestamp_atom)
233			{
234	jsorg71	450	xclip_provide_selection(event, XA_INTEGER, 32, (uint8 *) & g_last_gesturetime, 1);
235	matthewc	432	return;
236			}
237			else if (event->target == rdesktop_clipboard_formats_atom)
238			{
239	jsorg71	450	res = XGetWindowProperty(g_display, event->requestor,
240	astrand	435	rdesktop_clipboard_target_atom, 0, 1, True, XA_INTEGER,
241	astrand	468	&type, &format, &nitems, &bytes_left, &prop_return);
242	astrand	465	wanted_format = (uint32 *) prop_return;
243	matthewc	432	format = (res == Success) ? *wanted_format : CF_TEXT;
244	astrand	465	/* FIXME: Need to free returned data? */
245	matthewc	432	}
246			else
247			{
248			format = CF_TEXT;
249			}
250
251			cliprdr_send_data_request(format);
252			selection_request = *event;
253			/* wait for data */
254			}
255
256	astrand	462	void
257	matthewc	432	xclip_handle_SelectionClear(void)
258			{
259			DEBUG_CLIPBOARD(("xclip_handle_SelectionClear\n"));
260			have_primary = 0;
261	jsorg71	450	XDeleteProperty(g_display, DefaultRootWindow(g_display), rdesktop_clipboard_formats_atom);
262	forsberg	1025	cliprdr_send_simple_native_format_announce(CF_TEXT);
263	matthewc	432	}
264
265	astrand	462	void
266	astrand	435	xclip_handle_PropertyNotify(XPropertyEvent * event)
267	matthewc	432	{
268	forsberg	1026	unsigned long nitems;
269			unsigned long offset = 0;
270			unsigned long bytes_left = 1;
271	matthewc	432	int format, res;
272	astrand	913	XWindowAttributes wa;
273	matthewc	432	uint8 *data;
274			Atom type;
275
276	astrand	913	if (event->state == PropertyNewValue && g_waiting_for_INCR)
277			{
278			DEBUG_CLIPBOARD(("x_clip_handle_PropertyNotify: g_waiting_for_INCR != 0\n"));
279
280	forsberg	1026	while (bytes_left > 0) {
281			if ((XGetWindowProperty(g_display, g_wnd, rdesktop_clipboard_target_atom, offset,
282			4096L, False, AnyPropertyType,
283			&type, &format, &nitems, &bytes_left, &data) != Success))
284			{
285			XFree(data);
286			return;
287			}
288	astrand	913
289	forsberg	1026	if (nitems == 0)
290	astrand	913	{
291	forsberg	1026	XGetWindowAttributes(g_display, g_wnd, &wa);
292			XSelectInput(g_display, g_wnd, (wa.your_event_mask ^ PropertyChangeMask));
293			XFree(data);
294			g_waiting_for_INCR = 0;
295	astrand	913
296	forsberg	1026	if (g_clip_buflen > 0)
297			{
298			cliprdr_send_data(g_clip_buffer, g_clip_buflen + 1);
299	astrand	913
300	forsberg	1026	if (!rdesktop_is_selection_owner)
301			cliprdr_send_simple_native_format_announce(CF_TEXT);
302
303			xfree(g_clip_buffer);
304			g_clip_buffer = 0;
305			g_clip_buflen = 0;
306			}
307	astrand	913	}
308	forsberg	1026	else
309			{
310			uint8 *translated_data;
311			uint32 length = nitems;
312			uint8 *tmp;
313	astrand	913
314	forsberg	1026	offset += (length/4);
315			DEBUG_CLIPBOARD(("Translating linebreaks before sending data\n"));
316			translated_data = lf2crlf(data, &length);
317	astrand	913
318	forsberg	1026	tmp = xmalloc(length + g_clip_buflen);
319			strncpy((char ) tmp, (char ) g_clip_buffer, g_clip_buflen);
320			xfree(g_clip_buffer);
321	astrand	913
322	forsberg	1026	strncpy((char ) (tmp + g_clip_buflen), (char ) translated_data, length);
323			xfree(translated_data);
324	astrand	913
325	forsberg	1026	g_clip_buffer = tmp;
326			g_clip_buflen += length;
327	astrand	913
328	forsberg	1026	XFree(data);
329			}
330	astrand	913	}
331	forsberg	1026	XDeleteProperty(g_display, g_wnd, rdesktop_clipboard_target_atom);
332	astrand	913	}
333
334	matthewc	432	if (event->atom != rdesktop_clipboard_formats_atom)
335			return;
336
337	astrand	435	if (have_primary) /* from us */
338	matthewc	432	return;
339
340			if (event->state == PropertyNewValue)
341			{
342	jsorg71	450	res = XGetWindowProperty(g_display, DefaultRootWindow(g_display),
343	astrand	435	rdesktop_clipboard_formats_atom, 0,
344	astrand	456	XMaxRequestSize(g_display), False, XA_STRING, &type,
345			&format, &nitems, &bytes_left, &data);
346	matthewc	432
347			if ((res == Success) && (nitems > 0))
348			{
349			cliprdr_send_native_format_announce(data, nitems);
350			rdesktop_is_selection_owner = 1;
351			return;
352			}
353			}
354
355			/* PropertyDelete, or XGetWindowProperty failed */
356	forsberg	1025	cliprdr_send_simple_native_format_announce(CF_TEXT);
357	matthewc	432	rdesktop_is_selection_owner = 0;
358			}
359	astrand	942	#endif
360	matthewc	432
361
362			void
363	astrand	542	ui_clip_format_announce(uint8 * data, uint32 length)
364	matthewc	432	{
365	jsorg71	450	XSetSelectionOwner(g_display, primary_atom, g_wnd, g_last_gesturetime);
366			if (XGetSelectionOwner(g_display, primary_atom) != g_wnd)
367	matthewc	432	{
368			warning("Failed to aquire ownership of PRIMARY clipboard\n");
369			return;
370			}
371
372			have_primary = 1;
373	jsorg71	450	XChangeProperty(g_display, DefaultRootWindow(g_display),
374	astrand	435	rdesktop_clipboard_formats_atom, XA_STRING, 8, PropModeReplace, data,
375			length);
376	matthewc	432
377	jsorg71	450	XSetSelectionOwner(g_display, clipboard_atom, g_wnd, g_last_gesturetime);
378			if (XGetSelectionOwner(g_display, clipboard_atom) != g_wnd)
379	matthewc	432	warning("Failed to aquire ownership of CLIPBOARD clipboard\n");
380			}
381
382
383			void
384	astrand	542	ui_clip_handle_data(uint8 * data, uint32 length)
385	matthewc	432	{
386	astrand	551	if (selection_request.target != rdesktop_clipboard_formats_atom)
387			{
388			uint8 *firstnull;
389
390			/* translate linebreaks */
391			crlf2lf(data, &length);
392
393			/* Only send data up to null byte, if any */
394	astrand	608	firstnull = (uint8 ) strchr((char ) data, '\0');
395	astrand	551	if (firstnull)
396			{
397			length = firstnull - data + 1;
398			}
399			}
400
401	astrand	435	xclip_provide_selection(&selection_request, XA_STRING, 8, data, length - 1);
402	matthewc	432	}
403
404			void
405			ui_clip_request_data(uint32 format)
406			{
407			Window selectionowner;
408
409			DEBUG_CLIPBOARD(("Request from server for format %d\n", format));
410
411			if (rdesktop_is_selection_owner)
412			{
413	jsorg71	450	XChangeProperty(g_display, g_wnd, rdesktop_clipboard_target_atom,
414	matthewc	432	XA_INTEGER, 32, PropModeReplace, (unsigned char *) &format, 1);
415
416	jsorg71	450	XConvertSelection(g_display, primary_atom, rdesktop_clipboard_formats_atom,
417			rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
418	matthewc	432	return;
419			}
420
421	jsorg71	450	selectionowner = XGetSelectionOwner(g_display, primary_atom);
422	matthewc	432	if (selectionowner != None)
423			{
424	jsorg71	450	XConvertSelection(g_display, primary_atom, targets_atom,
425			rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
426	matthewc	432	return;
427			}
428
429			/* No PRIMARY, try CLIPBOARD */
430	jsorg71	450	selectionowner = XGetSelectionOwner(g_display, clipboard_atom);
431	matthewc	432	if (selectionowner != None)
432			{
433	jsorg71	450	XConvertSelection(g_display, clipboard_atom, targets_atom,
434			rdesktop_clipboard_target_atom, g_wnd, CurrentTime);
435	matthewc	432	return;
436			}
437
438			/* No data available */
439			cliprdr_send_data(NULL, 0);
440			}
441
442			void
443			ui_clip_sync(void)
444			{
445	forsberg	1025	cliprdr_send_simple_native_format_announce(CF_TEXT);
446	matthewc	432	}
447
448
449			void
450			xclip_init(void)
451			{
452			if (!cliprdr_init())
453			return;
454
455	jsorg71	450	primary_atom = XInternAtom(g_display, "PRIMARY", False);
456			clipboard_atom = XInternAtom(g_display, "CLIPBOARD", False);
457			targets_atom = XInternAtom(g_display, "TARGETS", False);
458			timestamp_atom = XInternAtom(g_display, "TIMESTAMP", False);
459	astrand	456	rdesktop_clipboard_target_atom =
460			XInternAtom(g_display, "_RDESKTOP_CLIPBOARD_TARGET", False);
461	jsorg71	450	incr_atom = XInternAtom(g_display, "INCR", False);
462	matthewc	432	targets[0] = targets_atom;
463	jsorg71	450	targets[1] = XInternAtom(g_display, "TEXT", False);
464	forsberg	707	targets[2] = XInternAtom(g_display, "STRING", False);
465	jsorg71	450	targets[3] = XInternAtom(g_display, "text/unicode", False);
466			targets[4] = XInternAtom(g_display, "TIMESTAMP", False);
467	matthewc	432	targets[5] = XA_STRING;
468
469			/* rdesktop sets _RDESKTOP_CLIPBOARD_FORMATS on the root window when acquiring the clipboard.
470			Other interested rdesktops can use this to notify their server of the available formats. */
471	astrand	435	rdesktop_clipboard_formats_atom =
472	jsorg71	450	XInternAtom(g_display, "_RDESKTOP_CLIPBOARD_FORMATS", False);
473			XSelectInput(g_display, DefaultRootWindow(g_display), PropertyChangeMask);
474	matthewc	432	}