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 |
|
|
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 |
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 |
} |