1 |
matthewc |
432 |
/* -*- c-basic-offset: 8 -*- |
2 |
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rdesktop: A Remote Desktop Protocol client. |
3 |
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Protocol services - Clipboard functions |
4 |
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Copyright (C) Erik Forsberg <forsberg@cendio.se> 2003 |
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Copyright (C) Matthew Chapman 2003 |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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#include <X11/Xlib.h> |
23 |
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#include <X11/Xatom.h> |
24 |
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#include "rdesktop.h" |
25 |
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26 |
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#define NUM_TARGETS 6 |
27 |
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|
28 |
jsorg71 |
450 |
extern Display *g_display; |
29 |
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extern Window g_wnd; |
30 |
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extern Time g_last_gesturetime; |
31 |
matthewc |
432 |
|
32 |
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static Atom clipboard_atom, primary_atom, targets_atom, timestamp_atom; |
33 |
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static Atom rdesktop_clipboard_target_atom, rdesktop_clipboard_formats_atom, incr_atom; |
34 |
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static XSelectionRequestEvent selection_request; |
35 |
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static Atom targets[NUM_TARGETS]; |
36 |
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static int have_primary = 0; |
37 |
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static int rdesktop_is_selection_owner = 0; |
38 |
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|
39 |
astrand |
913 |
static int g_waiting_for_INCR = 0; |
40 |
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static uint8 *g_clip_buffer = 0; |
41 |
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static uint32 g_clip_buflen = 0; |
42 |
astrand |
551 |
|
43 |
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/* Replace CR-LF to LF (well, rather removing all CR:s) This is done |
44 |
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in-place. The length is updated. Handles embedded nulls */ |
45 |
matthewc |
432 |
static void |
46 |
astrand |
551 |
crlf2lf(uint8 * data, uint32 * length) |
47 |
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{ |
48 |
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uint8 *dst, *src; |
49 |
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src = dst = data; |
50 |
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while (src < data + *length) |
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{ |
52 |
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if (*src != '\x0d') |
53 |
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*dst++ = *src; |
54 |
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src++; |
55 |
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} |
56 |
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*length = dst - data; |
57 |
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} |
58 |
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|
59 |
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/* Translate LF to CR-LF. To do this, we must allocate more memory. |
60 |
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The length is updated. */ |
61 |
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static uint8 * |
62 |
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lf2crlf(uint8 * data, uint32 * length) |
63 |
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{ |
64 |
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uint8 *result, *p, *o; |
65 |
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|
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/* Worst case: Every char is LF */ |
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result = xmalloc(*length * 2); |
68 |
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p = data; |
70 |
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o = result; |
71 |
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|
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while (p < data + *length) |
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{ |
74 |
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if (*p == '\x0a') |
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*o++ = '\x0d'; |
76 |
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*o++ = *p++; |
77 |
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} |
78 |
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*length = o - result; |
79 |
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|
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/* Convenience */ |
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*o++ = '\0'; |
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|
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return result; |
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} |
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|
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static void |
88 |
astrand |
435 |
xclip_provide_selection(XSelectionRequestEvent * req, Atom type, unsigned int format, uint8 * data, |
89 |
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uint32 length) |
90 |
matthewc |
432 |
{ |
91 |
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XEvent xev; |
92 |
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|
93 |
jsorg71 |
450 |
XChangeProperty(g_display, req->requestor, req->property, |
94 |
matthewc |
432 |
type, format, PropModeReplace, data, length); |
95 |
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|
96 |
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xev.xselection.type = SelectionNotify; |
97 |
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xev.xselection.serial = 0; |
98 |
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xev.xselection.send_event = True; |
99 |
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xev.xselection.requestor = req->requestor; |
100 |
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xev.xselection.selection = req->selection; |
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xev.xselection.target = req->target; |
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xev.xselection.property = req->property; |
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xev.xselection.time = req->time; |
104 |
jsorg71 |
450 |
XSendEvent(g_display, req->requestor, False, NoEventMask, &xev); |
105 |
matthewc |
432 |
} |
106 |
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|
107 |
astrand |
462 |
void |
108 |
matthewc |
432 |
xclip_handle_SelectionNotify(XSelectionEvent * event) |
109 |
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{ |
110 |
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unsigned long nitems, bytes_left; |
111 |
astrand |
913 |
XWindowAttributes wa; |
112 |
matthewc |
432 |
Atom type, best_target, text_target; |
113 |
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Atom *supported_targets; |
114 |
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int res, i, format; |
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uint8 *data; |
116 |
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|
117 |
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if (event->property == None) |
118 |
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goto fail; |
119 |
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120 |
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DEBUG_CLIPBOARD(("xclip_handle_SelectionNotify: selection=%s, target=%s, property=%s\n", |
121 |
jsorg71 |
450 |
XGetAtomName(g_display, event->selection), |
122 |
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XGetAtomName(g_display, event->target), |
123 |
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XGetAtomName(g_display, event->property))); |
124 |
matthewc |
432 |
|
125 |
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if (event->property == None) |
126 |
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goto fail; |
127 |
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|
128 |
jsorg71 |
450 |
res = XGetWindowProperty(g_display, g_wnd, rdesktop_clipboard_target_atom, |
129 |
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0, XMaxRequestSize(g_display), True, AnyPropertyType, |
130 |
matthewc |
432 |
&type, &format, &nitems, &bytes_left, &data); |
131 |
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|
132 |
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if (res != Success) |
133 |
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{ |
134 |
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DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n")); |
135 |
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goto fail; |
136 |
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} |
137 |
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|
138 |
astrand |
551 |
/* Negotiate target format */ |
139 |
matthewc |
432 |
if (event->target == targets_atom) |
140 |
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{ |
141 |
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/* FIXME: We should choose format here based on what the server wanted */ |
142 |
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best_target = XA_STRING; |
143 |
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if (type != None) |
144 |
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{ |
145 |
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supported_targets = (Atom *) data; |
146 |
jsorg71 |
450 |
text_target = XInternAtom(g_display, "TEXT", False); |
147 |
matthewc |
432 |
for (i = 0; i < nitems; i++) |
148 |
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{ |
149 |
astrand |
435 |
DEBUG_CLIPBOARD(("Target %d: %s\n", i, |
150 |
jsorg71 |
450 |
XGetAtomName(g_display, supported_targets[i]))); |
151 |
matthewc |
432 |
if (supported_targets[i] == text_target) |
152 |
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{ |
153 |
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DEBUG_CLIPBOARD(("Other party supports TEXT, choosing that as best_target\n")); |
154 |
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best_target = text_target; |
155 |
astrand |
551 |
break; |
156 |
matthewc |
432 |
} |
157 |
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} |
158 |
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XFree(data); |
159 |
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} |
160 |
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|
161 |
jsorg71 |
450 |
XConvertSelection(g_display, primary_atom, best_target, |
162 |
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rdesktop_clipboard_target_atom, g_wnd, event->time); |
163 |
matthewc |
432 |
return; |
164 |
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} |
165 |
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|
166 |
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if (type == incr_atom) |
167 |
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{ |
168 |
astrand |
913 |
DEBUG_CLIPBOARD(("Received INCR.\n")); |
169 |
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|
170 |
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XGetWindowAttributes(g_display, g_wnd, &wa); |
171 |
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if ((wa.your_event_mask | PropertyChangeMask) != wa.your_event_mask) |
172 |
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{ |
173 |
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XSelectInput(g_display, g_wnd, (wa.your_event_mask | PropertyChangeMask)); |
174 |
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} |
175 |
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XDeleteProperty(g_display, g_wnd, type); |
176 |
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XFree(data); |
177 |
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g_waiting_for_INCR = 1; |
178 |
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|
179 |
|
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if ((XGetWindowProperty(g_display, g_wnd, rdesktop_clipboard_target_atom, 0, |
180 |
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4096L, True, AnyPropertyType, |
181 |
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&type, &format, &nitems, &bytes_left, &data) != Success)) |
182 |
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{ |
183 |
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DEBUG_CLIPBOARD(("XGetWindowProperty failed.\n")); |
184 |
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goto fail; |
185 |
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} |
186 |
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else |
187 |
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{ |
188 |
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uint8 *translated_data; |
189 |
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uint32 length = nitems; |
190 |
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|
191 |
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translated_data = lf2crlf(data, &length); |
192 |
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|
193 |
|
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g_clip_buffer = (uint8 *) xmalloc(length); |
194 |
stargo |
914 |
strncpy((char*)g_clip_buffer, (char*)translated_data, length); |
195 |
astrand |
913 |
xfree(translated_data); |
196 |
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g_clip_buflen = length; |
197 |
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|
198 |
|
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XFree(data); |
199 |
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return; |
200 |
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} |
201 |
matthewc |
432 |
} |
202 |
|
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|
203 |
astrand |
551 |
/* Translate linebreaks, but only if not getting data from |
204 |
|
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other rdesktop instance */ |
205 |
|
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if (event->target != rdesktop_clipboard_formats_atom) |
206 |
|
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{ |
207 |
|
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uint8 *translated_data; |
208 |
|
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uint32 length = nitems; |
209 |
|
|
|
210 |
|
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DEBUG_CLIPBOARD(("Translating linebreaks before sending data\n")); |
211 |
|
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translated_data = lf2crlf(data, &length); |
212 |
|
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cliprdr_send_data(translated_data, length + 1); |
213 |
|
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xfree(translated_data); /* Not the same thing as XFree! */ |
214 |
|
|
} |
215 |
|
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else |
216 |
|
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{ |
217 |
|
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cliprdr_send_data(data, nitems + 1); |
218 |
|
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} |
219 |
matthewc |
432 |
XFree(data); |
220 |
|
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|
221 |
|
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if (!rdesktop_is_selection_owner) |
222 |
|
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cliprdr_send_text_format_announce(); |
223 |
|
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return; |
224 |
|
|
|
225 |
astrand |
435 |
fail: |
226 |
matthewc |
432 |
cliprdr_send_data(NULL, 0); |
227 |
|
|
} |
228 |
|
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|
229 |
astrand |
462 |
void |
230 |
astrand |
435 |
xclip_handle_SelectionRequest(XSelectionRequestEvent * event) |
231 |
matthewc |
432 |
{ |
232 |
|
|
unsigned long nitems, bytes_left; |
233 |
astrand |
465 |
unsigned char *prop_return; |
234 |
matthewc |
432 |
uint32 *wanted_format; |
235 |
|
|
int format, res; |
236 |
|
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Atom type; |
237 |
|
|
|
238 |
|
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DEBUG_CLIPBOARD(("xclip_handle_SelectionRequest: selection=%s, target=%s, property=%s\n", |
239 |
jsorg71 |
450 |
XGetAtomName(g_display, event->selection), |
240 |
|
|
XGetAtomName(g_display, event->target), |
241 |
|
|
XGetAtomName(g_display, event->property))); |
242 |
matthewc |
432 |
|
243 |
|
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if (event->target == targets_atom) |
244 |
|
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{ |
245 |
astrand |
435 |
xclip_provide_selection(event, XA_ATOM, 32, (uint8 *) & targets, NUM_TARGETS); |
246 |
matthewc |
432 |
return; |
247 |
|
|
} |
248 |
|
|
else if (event->target == timestamp_atom) |
249 |
|
|
{ |
250 |
jsorg71 |
450 |
xclip_provide_selection(event, XA_INTEGER, 32, (uint8 *) & g_last_gesturetime, 1); |
251 |
matthewc |
432 |
return; |
252 |
|
|
} |
253 |
|
|
else if (event->target == rdesktop_clipboard_formats_atom) |
254 |
|
|
{ |
255 |
jsorg71 |
450 |
res = XGetWindowProperty(g_display, event->requestor, |
256 |
astrand |
435 |
rdesktop_clipboard_target_atom, 0, 1, True, XA_INTEGER, |
257 |
astrand |
468 |
&type, &format, &nitems, &bytes_left, &prop_return); |
258 |
astrand |
465 |
wanted_format = (uint32 *) prop_return; |
259 |
matthewc |
432 |
format = (res == Success) ? *wanted_format : CF_TEXT; |
260 |
astrand |
465 |
/* FIXME: Need to free returned data? */ |
261 |
matthewc |
432 |
} |
262 |
|
|
else |
263 |
|
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{ |
264 |
|
|
format = CF_TEXT; |
265 |
|
|
} |
266 |
|
|
|
267 |
|
|
cliprdr_send_data_request(format); |
268 |
|
|
selection_request = *event; |
269 |
|
|
/* wait for data */ |
270 |
|
|
} |
271 |
|
|
|
272 |
astrand |
462 |
void |
273 |
matthewc |
432 |
xclip_handle_SelectionClear(void) |
274 |
|
|
{ |
275 |
|
|
DEBUG_CLIPBOARD(("xclip_handle_SelectionClear\n")); |
276 |
|
|
have_primary = 0; |
277 |
jsorg71 |
450 |
XDeleteProperty(g_display, DefaultRootWindow(g_display), rdesktop_clipboard_formats_atom); |
278 |
matthewc |
432 |
cliprdr_send_text_format_announce(); |
279 |
|
|
} |
280 |
|
|
|
281 |
astrand |
462 |
void |
282 |
astrand |
435 |
xclip_handle_PropertyNotify(XPropertyEvent * event) |
283 |
matthewc |
432 |
{ |
284 |
|
|
unsigned long nitems, bytes_left; |
285 |
|
|
int format, res; |
286 |
astrand |
913 |
XWindowAttributes wa; |
287 |
matthewc |
432 |
uint8 *data; |
288 |
|
|
Atom type; |
289 |
|
|
|
290 |
astrand |
913 |
if (event->state == PropertyNewValue && g_waiting_for_INCR) |
291 |
|
|
{ |
292 |
|
|
DEBUG_CLIPBOARD(("x_clip_handle_PropertyNotify: g_waiting_for_INCR != 0\n")); |
293 |
|
|
if ((XGetWindowProperty(g_display, g_wnd, rdesktop_clipboard_target_atom, 0, |
294 |
|
|
4096L, True, AnyPropertyType, |
295 |
|
|
&type, &format, &nitems, &bytes_left, &data) != Success)) |
296 |
|
|
{ |
297 |
|
|
XFree(data); |
298 |
|
|
return; |
299 |
|
|
} |
300 |
|
|
|
301 |
|
|
if (nitems == 0) |
302 |
|
|
{ |
303 |
|
|
XGetWindowAttributes(g_display, g_wnd, &wa); |
304 |
|
|
XSelectInput(g_display, g_wnd, (wa.your_event_mask ^ PropertyChangeMask)); |
305 |
|
|
XFree(data); |
306 |
|
|
g_waiting_for_INCR = 0; |
307 |
|
|
|
308 |
|
|
if (g_clip_buflen > 0) |
309 |
|
|
{ |
310 |
|
|
cliprdr_send_data(g_clip_buffer, g_clip_buflen + 1); |
311 |
|
|
|
312 |
|
|
if (!rdesktop_is_selection_owner) |
313 |
|
|
cliprdr_send_text_format_announce(); |
314 |
|
|
|
315 |
|
|
xfree(g_clip_buffer); |
316 |
|
|
g_clip_buffer = 0; |
317 |
|
|
g_clip_buflen = 0; |
318 |
|
|
} |
319 |
|
|
} |
320 |
|
|
else |
321 |
|
|
{ |
322 |
|
|
uint8 *translated_data; |
323 |
|
|
uint32 length = nitems; |
324 |
|
|
|
325 |
|
|
DEBUG_CLIPBOARD(("Translating linebreaks before sending data\n")); |
326 |
|
|
translated_data = lf2crlf(data, &length); |
327 |
|
|
|
328 |
|
|
uint8 *tmp = xmalloc(length + g_clip_buflen); |
329 |
stargo |
914 |
strncpy((char*)tmp, (char*)g_clip_buffer, g_clip_buflen); |
330 |
astrand |
913 |
xfree(g_clip_buffer); |
331 |
|
|
|
332 |
stargo |
914 |
strncpy((char*)(tmp + g_clip_buflen), (char*)translated_data, length); |
333 |
astrand |
913 |
xfree(translated_data); |
334 |
|
|
|
335 |
|
|
g_clip_buffer = tmp; |
336 |
|
|
g_clip_buflen += length; |
337 |
|
|
|
338 |
|
|
XFree(data); |
339 |
|
|
return; |
340 |
|
|
} |
341 |
|
|
} |
342 |
|
|
|
343 |
matthewc |
432 |
if (event->atom != rdesktop_clipboard_formats_atom) |
344 |
|
|
return; |
345 |
|
|
|
346 |
astrand |
435 |
if (have_primary) /* from us */ |
347 |
matthewc |
432 |
return; |
348 |
|
|
|
349 |
|
|
if (event->state == PropertyNewValue) |
350 |
|
|
{ |
351 |
jsorg71 |
450 |
res = XGetWindowProperty(g_display, DefaultRootWindow(g_display), |
352 |
astrand |
435 |
rdesktop_clipboard_formats_atom, 0, |
353 |
astrand |
456 |
XMaxRequestSize(g_display), False, XA_STRING, &type, |
354 |
|
|
&format, &nitems, &bytes_left, &data); |
355 |
matthewc |
432 |
|
356 |
|
|
if ((res == Success) && (nitems > 0)) |
357 |
|
|
{ |
358 |
|
|
cliprdr_send_native_format_announce(data, nitems); |
359 |
|
|
rdesktop_is_selection_owner = 1; |
360 |
|
|
return; |
361 |
|
|
} |
362 |
|
|
} |
363 |
|
|
|
364 |
|
|
/* PropertyDelete, or XGetWindowProperty failed */ |
365 |
|
|
cliprdr_send_text_format_announce(); |
366 |
|
|
rdesktop_is_selection_owner = 0; |
367 |
|
|
} |
368 |
|
|
|
369 |
|
|
|
370 |
|
|
void |
371 |
astrand |
542 |
ui_clip_format_announce(uint8 * data, uint32 length) |
372 |
matthewc |
432 |
{ |
373 |
jsorg71 |
450 |
XSetSelectionOwner(g_display, primary_atom, g_wnd, g_last_gesturetime); |
374 |
|
|
if (XGetSelectionOwner(g_display, primary_atom) != g_wnd) |
375 |
matthewc |
432 |
{ |
376 |
|
|
warning("Failed to aquire ownership of PRIMARY clipboard\n"); |
377 |
|
|
return; |
378 |
|
|
} |
379 |
|
|
|
380 |
|
|
have_primary = 1; |
381 |
jsorg71 |
450 |
XChangeProperty(g_display, DefaultRootWindow(g_display), |
382 |
astrand |
435 |
rdesktop_clipboard_formats_atom, XA_STRING, 8, PropModeReplace, data, |
383 |
|
|
length); |
384 |
matthewc |
432 |
|
385 |
jsorg71 |
450 |
XSetSelectionOwner(g_display, clipboard_atom, g_wnd, g_last_gesturetime); |
386 |
|
|
if (XGetSelectionOwner(g_display, clipboard_atom) != g_wnd) |
387 |
matthewc |
432 |
warning("Failed to aquire ownership of CLIPBOARD clipboard\n"); |
388 |
|
|
} |
389 |
|
|
|
390 |
|
|
|
391 |
|
|
void |
392 |
astrand |
542 |
ui_clip_handle_data(uint8 * data, uint32 length) |
393 |
matthewc |
432 |
{ |
394 |
astrand |
551 |
if (selection_request.target != rdesktop_clipboard_formats_atom) |
395 |
|
|
{ |
396 |
|
|
uint8 *firstnull; |
397 |
|
|
|
398 |
|
|
/* translate linebreaks */ |
399 |
|
|
crlf2lf(data, &length); |
400 |
|
|
|
401 |
|
|
/* Only send data up to null byte, if any */ |
402 |
astrand |
608 |
firstnull = (uint8 *) strchr((char *) data, '\0'); |
403 |
astrand |
551 |
if (firstnull) |
404 |
|
|
{ |
405 |
|
|
length = firstnull - data + 1; |
406 |
|
|
} |
407 |
|
|
} |
408 |
|
|
|
409 |
astrand |
435 |
xclip_provide_selection(&selection_request, XA_STRING, 8, data, length - 1); |
410 |
matthewc |
432 |
} |
411 |
|
|
|
412 |
|
|
void |
413 |
|
|
ui_clip_request_data(uint32 format) |
414 |
|
|
{ |
415 |
|
|
Window selectionowner; |
416 |
|
|
|
417 |
|
|
DEBUG_CLIPBOARD(("Request from server for format %d\n", format)); |
418 |
|
|
|
419 |
|
|
if (rdesktop_is_selection_owner) |
420 |
|
|
{ |
421 |
jsorg71 |
450 |
XChangeProperty(g_display, g_wnd, rdesktop_clipboard_target_atom, |
422 |
matthewc |
432 |
XA_INTEGER, 32, PropModeReplace, (unsigned char *) &format, 1); |
423 |
|
|
|
424 |
jsorg71 |
450 |
XConvertSelection(g_display, primary_atom, rdesktop_clipboard_formats_atom, |
425 |
|
|
rdesktop_clipboard_target_atom, g_wnd, CurrentTime); |
426 |
matthewc |
432 |
return; |
427 |
|
|
} |
428 |
|
|
|
429 |
jsorg71 |
450 |
selectionowner = XGetSelectionOwner(g_display, primary_atom); |
430 |
matthewc |
432 |
if (selectionowner != None) |
431 |
|
|
{ |
432 |
jsorg71 |
450 |
XConvertSelection(g_display, primary_atom, targets_atom, |
433 |
|
|
rdesktop_clipboard_target_atom, g_wnd, CurrentTime); |
434 |
matthewc |
432 |
return; |
435 |
|
|
} |
436 |
|
|
|
437 |
|
|
/* No PRIMARY, try CLIPBOARD */ |
438 |
jsorg71 |
450 |
selectionowner = XGetSelectionOwner(g_display, clipboard_atom); |
439 |
matthewc |
432 |
if (selectionowner != None) |
440 |
|
|
{ |
441 |
jsorg71 |
450 |
XConvertSelection(g_display, clipboard_atom, targets_atom, |
442 |
|
|
rdesktop_clipboard_target_atom, g_wnd, CurrentTime); |
443 |
matthewc |
432 |
return; |
444 |
|
|
} |
445 |
|
|
|
446 |
|
|
/* No data available */ |
447 |
|
|
cliprdr_send_data(NULL, 0); |
448 |
|
|
} |
449 |
|
|
|
450 |
|
|
void |
451 |
|
|
ui_clip_sync(void) |
452 |
|
|
{ |
453 |
|
|
cliprdr_send_text_format_announce(); |
454 |
|
|
} |
455 |
|
|
|
456 |
|
|
|
457 |
|
|
void |
458 |
|
|
xclip_init(void) |
459 |
|
|
{ |
460 |
|
|
if (!cliprdr_init()) |
461 |
|
|
return; |
462 |
|
|
|
463 |
jsorg71 |
450 |
primary_atom = XInternAtom(g_display, "PRIMARY", False); |
464 |
|
|
clipboard_atom = XInternAtom(g_display, "CLIPBOARD", False); |
465 |
|
|
targets_atom = XInternAtom(g_display, "TARGETS", False); |
466 |
|
|
timestamp_atom = XInternAtom(g_display, "TIMESTAMP", False); |
467 |
astrand |
456 |
rdesktop_clipboard_target_atom = |
468 |
|
|
XInternAtom(g_display, "_RDESKTOP_CLIPBOARD_TARGET", False); |
469 |
jsorg71 |
450 |
incr_atom = XInternAtom(g_display, "INCR", False); |
470 |
matthewc |
432 |
targets[0] = targets_atom; |
471 |
jsorg71 |
450 |
targets[1] = XInternAtom(g_display, "TEXT", False); |
472 |
forsberg |
707 |
targets[2] = XInternAtom(g_display, "STRING", False); |
473 |
jsorg71 |
450 |
targets[3] = XInternAtom(g_display, "text/unicode", False); |
474 |
|
|
targets[4] = XInternAtom(g_display, "TIMESTAMP", False); |
475 |
matthewc |
432 |
targets[5] = XA_STRING; |
476 |
|
|
|
477 |
|
|
/* rdesktop sets _RDESKTOP_CLIPBOARD_FORMATS on the root window when acquiring the clipboard. |
478 |
|
|
Other interested rdesktops can use this to notify their server of the available formats. */ |
479 |
astrand |
435 |
rdesktop_clipboard_formats_atom = |
480 |
jsorg71 |
450 |
XInternAtom(g_display, "_RDESKTOP_CLIPBOARD_FORMATS", False); |
481 |
|
|
XSelectInput(g_display, DefaultRootWindow(g_display), PropertyChangeMask); |
482 |
matthewc |
432 |
} |