xkeymap.c@ 48765

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rdesktop: Quick virtual desktop usability hack, disabled by default.
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1	/* -- c-basic-offset: 8 --
2	rdesktop: A Remote Desktop Protocol client.
3	User interface services - X keyboard mapping
4
5	Copyright (C) Matthew Chapman <matthewc.unsw.edu.au> 1999-2008
6	Copyright (C) 2003-2008 Peter Astrand <[email protected]> for Cendio AB
7
8	This program is free software: you can redistribute it and/or modify
9	it under the terms of the GNU General Public License as published by
10	the Free Software Foundation, either version 3 of the License, or
11	(at your option) any later version.
12
13	This program is distributed in the hope that it will be useful,
14	but WITHOUT ANY WARRANTY; without even the implied warranty of
15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	GNU General Public License for more details.
17
18	You should have received a copy of the GNU General Public License
19	along with this program. If not, see <http://www.gnu.org/licenses/>.
20	*/
21
22	/*
23	* Oracle GPL Disclaimer: For the avoidance of doubt, except that if any license choice
24	* other than GPL or LGPL is available it will apply instead, Oracle elects to use only
25	* the General Public License version 2 (GPLv2) at this time for any software where
26	* a choice of GPL license versions is made available with the language indicating
27	* that GPLv2 or any later version may be used, or where a choice of which version
28	* of the GPL is applied is otherwise unspecified.
29	*/
30
31	#ifdef RDP2VNC
32	#include "vnc/x11stubs.h"
33	#else
34	#include <X11/Xlib.h>
35	#include <X11/keysym.h>
36	#endif
37
38	#include <ctype.h>
39	#include <limits.h>
40	#include <time.h>
41	#include <string.h>
42	#include <assert.h>
43	#include "rdesktop.h"
44	#include "scancodes.h"
45
46	#define KEYMAP_SIZE 0xffff+1
47	#define KEYMAP_MASK 0xffff
48	#define KEYMAP_MAX_LINE_LENGTH 80
49
50	extern Display *g_display;
51	extern Window g_wnd;
52	extern char g_keymapname[16];
53	extern unsigned int g_keylayout;
54	extern int g_keyboard_type;
55	extern int g_keyboard_subtype;
56	extern int g_keyboard_functionkeys;
57	extern int g_win_button_size;
58	extern RD_BOOL g_enable_compose;
59	extern RD_BOOL g_use_rdp5;
60	extern RD_BOOL g_numlock_sync;
61
62	static RD_BOOL keymap_loaded;
63	static key_translation *keymap[KEYMAP_SIZE];
64	static KeySym keypress_keysyms[256];
65	static int min_keycode;
66	static uint16 remote_modifier_state = 0;
67	static uint16 saved_remote_modifier_state = 0;
68
69	static void update_modifier_state(uint8 scancode, RD_BOOL pressed);
70
71	/* Free key_translation structure, including linked list */
72	static void
73	free_key_translation(key_translation * ptr)
74	{
75	key_translation *next;
76
77	while (ptr)
78	{
79	next = ptr->next;
80	xfree(ptr);
81	ptr = next;
82	}
83	}
84
85	static void
86	add_to_keymap(char keyname, uint8 scancode, uint16 modifiers, char mapname)
87	{
88	KeySym keysym;
89	key_translation *tr;
90
91	keysym = XStringToKeysym(keyname);
92	if (keysym == NoSymbol)
93	{
94	DEBUG_KBD(("Bad keysym \"%s\" in keymap %s (ignoring)\n", keyname, mapname));
95	return;
96	}
97
98	DEBUG_KBD(("Adding translation, keysym=0x%x, scancode=0x%x, "
99	"modifiers=0x%x\n", (unsigned int) keysym, scancode, modifiers));
100
101	tr = (key_translation *) xmalloc(sizeof(key_translation));
102	memset(tr, 0, sizeof(key_translation));
103	tr->scancode = scancode;
104	tr->modifiers = modifiers;
105	free_key_translation(keymap[keysym & KEYMAP_MASK]);
106	keymap[keysym & KEYMAP_MASK] = tr;
107
108	return;
109	}
110
111	static void
112	add_sequence(char rest, char mapname)
113	{
114	KeySym keysym;
115	key_translation tr, *prev_next;
116	size_t chars;
117	char keyname[KEYMAP_MAX_LINE_LENGTH];
118
119	/* Skip over whitespace after the sequence keyword */
120	chars = strspn(rest, " \t");
121	rest += chars;
122
123	/* Fetch the keysym name */
124	chars = strcspn(rest, " \t\0");
125	STRNCPY(keyname, rest, chars + 1);
126	rest += chars;
127
128	keysym = XStringToKeysym(keyname);
129	if (keysym == NoSymbol)
130	{
131	DEBUG_KBD(("Bad keysym \"%s\" in keymap %s (ignoring line)\n", keyname, mapname));
132	return;
133	}
134
135
136	DEBUG_KBD(("Adding sequence for keysym (0x%lx, %s) -> ", keysym, keyname));
137
138	free_key_translation(keymap[keysym & KEYMAP_MASK]);
139	prev_next = &keymap[keysym & KEYMAP_MASK];
140
141	while (*rest)
142	{
143	/* Skip whitespace */
144	chars = strspn(rest, " \t");
145	rest += chars;
146
147	/* Fetch the keysym name */
148	chars = strcspn(rest, " \t\0");
149	STRNCPY(keyname, rest, chars + 1);
150	rest += chars;
151
152	keysym = XStringToKeysym(keyname);
153	if (keysym == NoSymbol)
154	{
155	DEBUG_KBD(("Bad keysym \"%s\" in keymap %s (ignoring line)\n", keyname,
156	mapname));
157	return;
158	}
159
160	/* Allocate space for key_translation structure */
161	tr = (key_translation *) xmalloc(sizeof(key_translation));
162	memset(tr, 0, sizeof(key_translation));
163	*prev_next = tr;
164	prev_next = &tr->next;
165	tr->seq_keysym = keysym;
166
167	DEBUG_KBD(("0x%x, ", (unsigned int) keysym));
168	}
169	DEBUG_KBD(("\n"));
170	}
171
172	RD_BOOL
173	xkeymap_from_locale(const char *locale)
174	{
175	char str, ptr;
176	FILE *fp;
177
178	/* Create a working copy */
179	str = xstrdup(locale);
180
181	/* Truncate at dot and at */
182	ptr = strrchr(str, '.');
183	if (ptr)
184	*ptr = '\0';
185	ptr = strrchr(str, '@');
186	if (ptr)
187	*ptr = '\0';
188
189	/* Replace _ with - */
190	ptr = strrchr(str, '_');
191	if (ptr)
192	*ptr = '-';
193
194	/* Convert to lowercase */
195	ptr = str;
196	while (*ptr)
197	{
198	ptr = tolower((int) ptr);
199	ptr++;
200	}
201
202	/* Try to open this keymap (da-dk) */
203	fp = xkeymap_open(str);
204	if (fp == NULL)
205	{
206	/* Truncate at dash */
207	ptr = strrchr(str, '-');
208	if (ptr)
209	*ptr = '\0';
210
211	/* Try the short name (da) */
212	fp = xkeymap_open(str);
213	}
214
215	if (fp)
216	{
217	fclose(fp);
218	STRNCPY(g_keymapname, str, sizeof(g_keymapname));
219	xfree(str);
220	return True;
221	}
222
223	xfree(str);
224	return False;
225	}
226
227
228	/* Joins two path components. The result should be freed with
229	xfree(). */
230	static char *
231	pathjoin(const char a, const char b)
232	{
233	char *result;
234	result = xmalloc(PATH_MAX * 2 + 1);
235
236	if (b[0] == '/')
237	{
238	strncpy(result, b, PATH_MAX);
239	}
240	else
241	{
242	strncpy(result, a, PATH_MAX);
243	strcat(result, "/");
244	strncat(result, b, PATH_MAX);
245	}
246	return result;
247	}
248
249	/* Try to open a keymap with fopen() */
250	FILE *
251	xkeymap_open(const char *filename)
252	{
253	char path1, path2;
254	char *home;
255	FILE *fp;
256
257	/* Try ~/.rdesktop/keymaps */
258	home = getenv("HOME");
259	if (home)
260	{
261	path1 = pathjoin(home, ".rdesktop/keymaps");
262	path2 = pathjoin(path1, filename);
263	xfree(path1);
264	fp = fopen(path2, "r");
265	xfree(path2);
266	if (fp)
267	return fp;
268	}
269
270	/* Try KEYMAP_PATH */
271	path1 = pathjoin(KEYMAP_PATH, filename);
272	fp = fopen(path1, "r");
273	xfree(path1);
274	if (fp)
275	return fp;
276
277	/* Try current directory, in case we are running from the source
278	tree */
279	path1 = pathjoin("keymaps", filename);
280	fp = fopen(path1, "r");
281	xfree(path1);
282	if (fp)
283	return fp;
284
285	return NULL;
286	}
287
288	static RD_BOOL
289	xkeymap_read(char *mapname)
290	{
291	FILE *fp;
292	char line[KEYMAP_MAX_LINE_LENGTH];
293	unsigned int line_num = 0;
294	unsigned int line_length = 0;
295	char keyname, p;
296	char *line_rest;
297	uint8 scancode;
298	uint16 modifiers;
299
300	fp = xkeymap_open(mapname);
301	if (fp == NULL)
302	{
303	error("Failed to open keymap %s\n", mapname);
304	return False;
305	}
306
307	/* FIXME: More tolerant on white space */
308	while (fgets(line, sizeof(line), fp) != NULL)
309	{
310	line_num++;
311
312	/* Replace the \n with \0 */
313	p = strchr(line, '\n');
314	if (p != NULL)
315	*p = 0;
316
317	line_length = strlen(line);
318
319	/* Completely empty line */
320	if (strspn(line, " \t\n\r\f\v") == line_length)
321	{
322	continue;
323	}
324
325	/* Include */
326	if (str_startswith(line, "include "))
327	{
328	if (!xkeymap_read(line + sizeof("include ") - 1))
329	return False;
330	continue;
331	}
332
333	/* map */
334	if (str_startswith(line, "map "))
335	{
336	g_keylayout = strtoul(line + sizeof("map ") - 1, NULL, 16);
337	DEBUG_KBD(("Keylayout 0x%x\n", g_keylayout));
338	continue;
339	}
340
341	/* compose */
342	if (str_startswith(line, "enable_compose"))
343	{
344	DEBUG_KBD(("Enabling compose handling\n"));
345	g_enable_compose = True;
346	continue;
347	}
348
349	/* sequence */
350	if (str_startswith(line, "sequence"))
351	{
352	add_sequence(line + sizeof("sequence") - 1, mapname);
353	continue;
354	}
355
356	/* keyboard_type */
357	if (str_startswith(line, "keyboard_type "))
358	{
359	g_keyboard_type = strtol(line + sizeof("keyboard_type ") - 1, NULL, 16);
360	DEBUG_KBD(("keyboard_type 0x%x\n", g_keyboard_type));
361	continue;
362	}
363
364	/* keyboard_subtype */
365	if (str_startswith(line, "keyboard_subtype "))
366	{
367	g_keyboard_subtype =
368	strtol(line + sizeof("keyboard_subtype ") - 1, NULL, 16);
369	DEBUG_KBD(("keyboard_subtype 0x%x\n", g_keyboard_subtype));
370	continue;
371	}
372
373	/* keyboard_functionkeys */
374	if (str_startswith(line, "keyboard_functionkeys "))
375	{
376	g_keyboard_functionkeys =
377	strtol(line + sizeof("keyboard_functionkeys ") - 1, NULL, 16);
378	DEBUG_KBD(("keyboard_functionkeys 0x%x\n", g_keyboard_functionkeys));
379	continue;
380	}
381
382	/* Comment */
383	if (line[0] == '#')
384	{
385	continue;
386	}
387
388	/* Normal line */
389	keyname = line;
390	p = strchr(line, ' ');
391	if (p == NULL)
392	{
393	error("Bad line %d in keymap %s\n", line_num, mapname);
394	continue;
395	}
396	else
397	{
398	*p = 0;
399	}
400
401	/* scancode */
402	p++;
403	scancode = strtol(p, &line_rest, 16);
404
405	/* flags */
406	/* FIXME: Should allow case-insensitive flag names.
407	Fix by using lex+yacc... */
408	modifiers = 0;
409	if (strstr(line_rest, "altgr"))
410	{
411	MASK_ADD_BITS(modifiers, MapAltGrMask);
412	}
413
414	if (strstr(line_rest, "shift"))
415	{
416	MASK_ADD_BITS(modifiers, MapLeftShiftMask);
417	}
418
419	if (strstr(line_rest, "numlock"))
420	{
421	MASK_ADD_BITS(modifiers, MapNumLockMask);
422	}
423
424	if (strstr(line_rest, "localstate"))
425	{
426	MASK_ADD_BITS(modifiers, MapLocalStateMask);
427	}
428
429	if (strstr(line_rest, "inhibit"))
430	{
431	MASK_ADD_BITS(modifiers, MapInhibitMask);
432	}
433
434	add_to_keymap(keyname, scancode, modifiers, mapname);
435
436	if (strstr(line_rest, "addupper"))
437	{
438	/* Automatically add uppercase key, with same modifiers
439	plus shift */
440	for (p = keyname; *p; p++)
441	p = toupper((int) p);
442	MASK_ADD_BITS(modifiers, MapLeftShiftMask);
443	add_to_keymap(keyname, scancode, modifiers, mapname);
444	}
445	}
446
447	fclose(fp);
448	return True;
449	}
450
451
452	/* Before connecting and creating UI */
453	void
454	xkeymap_init(void)
455	{
456	unsigned int max_keycode;
457
458	if (strcmp(g_keymapname, "none"))
459	{
460	if (xkeymap_read(g_keymapname))
461	keymap_loaded = True;
462	}
463
464	XDisplayKeycodes(g_display, &min_keycode, (int *) &max_keycode);
465	}
466
467	static void
468	send_winkey(uint32 ev_time, RD_BOOL pressed, RD_BOOL leftkey)
469	{
470	uint8 winkey;
471
472	if (leftkey)
473	winkey = SCANCODE_CHAR_LWIN;
474	else
475	winkey = SCANCODE_CHAR_RWIN;
476
477	if (pressed)
478	{
479	if (g_use_rdp5)
480	{
481	rdp_send_scancode(ev_time, RDP_KEYPRESS, winkey);
482	}
483	else
484	{
485	/* RDP4 doesn't support winkey. Fake with Ctrl-Esc */
486	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LCTRL);
487	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_ESC);
488	}
489	}
490	else
491	{
492	/* key released */
493	if (g_use_rdp5)
494	{
495	rdp_send_scancode(ev_time, RDP_KEYRELEASE, winkey);
496	}
497	else
498	{
499	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_ESC);
500	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL);
501	}
502	}
503	}
504
505	static void
506	reset_winkey(uint32 ev_time)
507	{
508	if (g_use_rdp5)
509	{
510	/* For some reason, it seems to suffice to release
511	either the left or right winkey. */
512	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LWIN);
513	}
514	}
515
516
517	void
518	set_keypress_keysym(unsigned int keycode, KeySym keysym)
519	{
520	if (keycode < 8 \|\| keycode > 255)
521	return;
522	keypress_keysyms[keycode] = keysym;
523	}
524
525
526	KeySym
527	reset_keypress_keysym(unsigned int keycode, KeySym keysym)
528	{
529	KeySym ks;
530	if (keycode < 8 \|\| keycode > 255)
531	return keysym;
532	ks = keypress_keysyms[keycode];
533	if (ks != 0)
534	{
535	keypress_keysyms[keycode] = 0;
536	}
537	else
538	{
539	ks = keysym;
540	}
541
542	return ks;
543	}
544
545
546	/* Handle special key combinations */
547	RD_BOOL
548	handle_special_keys(uint32 keysym, unsigned int state, uint32 ev_time, RD_BOOL pressed)
549	{
550	switch (keysym)
551	{
552	case XK_Return:
553	if ((get_key_state(state, XK_Alt_L) \|\| get_key_state(state, XK_Alt_R))
554	&& (get_key_state(state, XK_Control_L)
555	\|\| get_key_state(state, XK_Control_R)))
556	{
557	/* Ctrl-Alt-Enter: toggle full screen */
558	if (pressed)
559	xwin_toggle_fullscreen();
560	return True;
561	}
562	break;
563
564	case XK_Break:
565	#ifdef RDESKTOP_KBD_CODE
566	/* Send Break sequence E0 46 E0 C6 */
567	if (pressed)
568	{
569	rdp_send_scancode(ev_time, RDP_KEYPRESS,
570	(SCANCODE_EXTENDED \| 0x46));
571	rdp_send_scancode(ev_time, RDP_KEYPRESS,
572	(SCANCODE_EXTENDED \| 0xc6));
573	}
574	/* No release sequence */
575	return True;
576	#else
577	/* Send Break sequence E0 46 E0 C6 */
578	if (pressed)
579	{
580	/* VirtualBox code begin */
581	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT, 0x46, 0);
582	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT \| KBD_FLAG_UP, 0x46, 0);
583	/* VirtualBox code end */
584	}
585	/* No release sequence */
586	return True;
587	#endif /* RDESKTOP_KBD_CODE */
588	break;
589
590	case XK_Pause:
591	#ifdef RDESKTOP_KBD_CODE
592	/* According to MS Keyboard Scan Code
593	Specification, pressing Pause should result
594	in E1 1D 45 E1 9D C5. I'm not exactly sure
595	of how this is supposed to be sent via
596	RDP. The code below seems to work, but with
597	the side effect that Left Ctrl stays
598	down. Therefore, we release it when Pause
599	is released. */
600	if (pressed)
601	{
602	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xe1, 0);
603	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x1d, 0);
604	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x45, 0);
605	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xe1, 0);
606	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x9d, 0);
607	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xc5, 0);
608	}
609	else
610	{
611	/* Release Left Ctrl */
612	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYRELEASE,
613	0x1d, 0);
614	}
615	return True;
616	#else
617	/* Send Break sequence E1 1D 45 E1 9D C5 */
618	if (pressed)
619	{
620	/* VirtualBox code begin */
621	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT2, 0x1d, 0);
622	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x45, 0);
623	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT2 \| KBD_FLAG_UP, 0x1d, 0);
624	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_UP, 0x45, 0);
625	/* VirtualBox code end */
626	}
627	/* No release sequence */
628	return True;
629	#endif /* RDESKTOP_KBD_CODE */
630	break;
631
632	case XK_Meta_L: /* Windows keys */
633	case XK_Super_L:
634	case XK_Hyper_L:
635	send_winkey(ev_time, pressed, True);
636	return True;
637	break;
638
639	case XK_Meta_R:
640	case XK_Super_R:
641	case XK_Hyper_R:
642	send_winkey(ev_time, pressed, False);
643	return True;
644	break;
645
646	case XK_space:
647	/* Prevent access to the Windows system menu in single app mode */
648	if (g_win_button_size
649	&& (get_key_state(state, XK_Alt_L) \|\| get_key_state(state, XK_Alt_R)))
650	return True;
651	break;
652
653	case XK_Num_Lock:
654	/* Synchronize on key release */
655	if (g_numlock_sync && !pressed)
656	rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0,
657	ui_get_numlock_state(read_keyboard_state()), 0);
658
659	/* Inhibit */
660	return True;
661	break;
662	case XK_Overlay1_Enable:
663	/* Toggle SeamlessRDP */
664	if (pressed)
665	ui_seamless_toggle();
666	break;
667	#ifdef WITH_BIRD_VD_HACKS
668	case XK_Left:
669	case XK_Right:
670	{
671	/* Check for typical virtual desktop switching hotkeys:
672	Ctrl-Alt-Left and Ctrl-Alt-Right.
673	Needs to be pressed twice to have any effect... */
674	extern RD_BOOL g_keep_virtual_desktop_shortcuts;
675	extern RD_BOOL g_fullscreen;
676	if ( g_keep_virtual_desktop_shortcuts
677	&& ( ( get_key_state(state, XK_Alt_L)
678	\|\| get_key_state(state, XK_Alt_R))
679	&& ( get_key_state(state, XK_Control_L)
680	\|\| get_key_state(state, XK_Control_R))
681	)
682	)
683	{
684	if (g_fullscreen)
685	xwin_toggle_fullscreen();
686	XUngrabKeyboard(g_display, CurrentTime);
687	return True;
688	}
689	break;
690	}
691	#endif
692	}
693	return False;
694	}
695
696
697	key_translation
698	xkeymap_translate_key(uint32 keysym, unsigned int keycode, unsigned int state)
699	{
700	key_translation tr = { 0, 0, 0, 0 };
701	key_translation *ptr;
702
703	ptr = keymap[keysym & KEYMAP_MASK];
704	if (ptr)
705	{
706	tr = *ptr;
707	if (tr.seq_keysym == 0) /* Normal scancode translation */
708	{
709	if (MASK_HAS_BITS(tr.modifiers, MapInhibitMask))
710	{
711	DEBUG_KBD(("Inhibiting key\n"));
712	tr.scancode = 0;
713	return tr;
714	}
715
716	if (MASK_HAS_BITS(tr.modifiers, MapLocalStateMask))
717	{
718	/* The modifiers to send for this key should be obtained
719	from the local state. Currently, only shift is implemented. */
720	if (MASK_HAS_BITS(state, ShiftMask))
721	{
722	tr.modifiers = MapLeftShiftMask;
723	}
724	}
725
726	/* Windows interprets CapsLock+Ctrl+key
727	differently from Shift+Ctrl+key. Since we
728	are simulating CapsLock with Shifts, things
729	like Ctrl+f with CapsLock on breaks. To
730	solve this, we are releasing Shift if Ctrl
731	is on, but only if Shift isn't physically pressed. */
732	if (MASK_HAS_BITS(tr.modifiers, MapShiftMask)
733	&& MASK_HAS_BITS(remote_modifier_state, MapCtrlMask)
734	&& !MASK_HAS_BITS(state, ShiftMask))
735	{
736	DEBUG_KBD(("Non-physical Shift + Ctrl pressed, releasing Shift\n"));
737	MASK_REMOVE_BITS(tr.modifiers, MapShiftMask);
738	}
739
740	DEBUG_KBD(("Found scancode translation, scancode=0x%x, modifiers=0x%x\n",
741	tr.scancode, tr.modifiers));
742	}
743	}
744	else
745	{
746	if (keymap_loaded)
747	warning("No translation for (keysym 0x%lx, %s)\n", keysym,
748	get_ksname(keysym));
749
750	/* not in keymap, try to interpret the raw scancode */
751	if (((int) keycode >= min_keycode) && (keycode <= 0x60))
752	{
753	tr.scancode = keycode - min_keycode;
754
755	/* The modifiers to send for this key should be
756	obtained from the local state. Currently, only
757	shift is implemented. */
758	if (MASK_HAS_BITS(state, ShiftMask))
759	{
760	tr.modifiers = MapLeftShiftMask;
761	}
762
763	DEBUG_KBD(("Sending guessed scancode 0x%x\n", tr.scancode));
764	}
765	else
766	{
767	DEBUG_KBD(("No good guess for keycode 0x%x found\n", keycode));
768	}
769	}
770
771	return tr;
772	}
773
774	static RD_BOOL
775	is_modifier(uint8 scancode)
776	{
777	switch (scancode)
778	{
779	case SCANCODE_CHAR_LSHIFT:
780	case SCANCODE_CHAR_RSHIFT:
781	case SCANCODE_CHAR_LCTRL:
782	case SCANCODE_CHAR_RCTRL:
783	case SCANCODE_CHAR_LALT:
784	case SCANCODE_CHAR_RALT:
785	case SCANCODE_CHAR_LWIN:
786	case SCANCODE_CHAR_RWIN:
787	case SCANCODE_CHAR_NUMLOCK:
788	return True;
789	default:
790	break;
791	}
792	return False;
793	}
794
795
796	void
797	xkeymap_send_keys(uint32 keysym, unsigned int keycode, unsigned int state, uint32 ev_time,
798	RD_BOOL pressed, uint8 nesting)
799	{
800	key_translation tr, *ptr;
801	tr = xkeymap_translate_key(keysym, keycode, state);
802
803	if (tr.seq_keysym == 0)
804	{
805	/* Scancode translation */
806	if (tr.scancode == 0)
807	return;
808
809	save_remote_modifiers(tr.scancode);
810	ensure_remote_modifiers(ev_time, tr);
811	rdp_send_scancode(ev_time, pressed ? RDP_KEYPRESS : RDP_KEYRELEASE, tr.scancode);
812	restore_remote_modifiers(ev_time, tr.scancode);
813	return;
814	}
815
816	/* Sequence, only on key down */
817	if (pressed)
818	{
819	ptr = &tr;
820	do
821	{
822	DEBUG_KBD(("Handling sequence element, keysym=0x%x\n",
823	(unsigned int) ptr->seq_keysym));
824
825	if (nesting++ > 32)
826	{
827	error("Sequence nesting too deep\n");
828	return;
829	}
830
831	xkeymap_send_keys(ptr->seq_keysym, keycode, state, ev_time, True, nesting);
832	xkeymap_send_keys(ptr->seq_keysym, keycode, state, ev_time, False, nesting);
833	ptr = ptr->next;
834	}
835	while (ptr);
836	}
837	}
838
839	uint16
840	xkeymap_translate_button(unsigned int button)
841	{
842	switch (button)
843	{
844	case Button1: /* left */
845	return MOUSE_FLAG_BUTTON1;
846	case Button2: /* middle */
847	return MOUSE_FLAG_BUTTON3;
848	case Button3: /* right */
849	return MOUSE_FLAG_BUTTON2;
850	case Button4: /* wheel up */
851	return MOUSE_FLAG_BUTTON4;
852	case Button5: /* wheel down */
853	return MOUSE_FLAG_BUTTON5;
854	}
855
856	return 0;
857	}
858
859	char *
860	get_ksname(uint32 keysym)
861	{
862	char *ksname = NULL;
863
864	if (keysym == NoSymbol)
865	ksname = "NoSymbol";
866	else if (!(ksname = XKeysymToString(keysym)))
867	ksname = "(no name)";
868
869	return ksname;
870	}
871
872	void
873	save_remote_modifiers(uint8 scancode)
874	{
875	if (is_modifier(scancode))
876	return;
877
878	saved_remote_modifier_state = remote_modifier_state;
879	}
880
881	void
882	restore_remote_modifiers(uint32 ev_time, uint8 scancode)
883	{
884	key_translation dummy = { };
885
886	if (is_modifier(scancode))
887	return;
888
889	dummy.scancode = 0;
890	dummy.modifiers = saved_remote_modifier_state;
891	ensure_remote_modifiers(ev_time, dummy);
892	}
893
894	void
895	ensure_remote_modifiers(uint32 ev_time, key_translation tr)
896	{
897	/* If this key is a modifier, do nothing */
898	if (is_modifier(tr.scancode))
899	return;
900
901	if (!g_numlock_sync)
902	{
903	/* NumLock */
904	if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)
905	!= MASK_HAS_BITS(remote_modifier_state, MapNumLockMask))
906	{
907	/* The remote modifier state is not correct */
908	uint16 new_remote_state;
909
910	if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask))
911	{
912	DEBUG_KBD(("Remote NumLock state is incorrect, activating NumLock.\n"));
913	new_remote_state = KBD_FLAG_NUMLOCK;
914	remote_modifier_state = MapNumLockMask;
915	}
916	else
917	{
918	DEBUG_KBD(("Remote NumLock state is incorrect, deactivating NumLock.\n"));
919	new_remote_state = 0;
920	remote_modifier_state = 0;
921	}
922
923	rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0, new_remote_state, 0);
924	}
925	}
926
927
928	/* Shift. Left shift and right shift are treated as equal; either is fine. */
929	if (MASK_HAS_BITS(tr.modifiers, MapShiftMask)
930	!= MASK_HAS_BITS(remote_modifier_state, MapShiftMask))
931	{
932	/* The remote modifier state is not correct */
933	if (MASK_HAS_BITS(tr.modifiers, MapLeftShiftMask))
934	{
935	/* Needs left shift. Send down. */
936	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LSHIFT);
937	}
938	else if (MASK_HAS_BITS(tr.modifiers, MapRightShiftMask))
939	{
940	/* Needs right shift. Send down. */
941	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RSHIFT);
942	}
943	else
944	{
945	/* Should not use this modifier. Send up for shift currently pressed. */
946	if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask))
947	/* Left shift is down */
948	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT);
949	else
950	/* Right shift is down */
951	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT);
952	}
953	}
954
955	/* AltGr */
956	if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask)
957	!= MASK_HAS_BITS(remote_modifier_state, MapAltGrMask))
958	{
959	/* The remote modifier state is not correct */
960	if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask))
961	{
962	/* Needs this modifier. Send down. */
963	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RALT);
964	}
965	else
966	{
967	/* Should not use this modifier. Send up. */
968	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT);
969	}
970	}
971
972
973	}
974
975
976	unsigned int
977	read_keyboard_state()
978	{
979	#ifdef RDP2VNC
980	return 0;
981	#else
982	unsigned int state;
983	Window wdummy;
984	int dummy;
985
986	XQueryPointer(g_display, g_wnd, &wdummy, &wdummy, &dummy, &dummy, &dummy, &dummy, &state);
987	return state;
988	#endif
989	}
990
991
992	uint16
993	ui_get_numlock_state(unsigned int state)
994	{
995	uint16 numlock_state = 0;
996
997	if (get_key_state(state, XK_Num_Lock))
998	numlock_state = KBD_FLAG_NUMLOCK;
999
1000	return numlock_state;
1001	}
1002
1003
1004	void
1005	reset_modifier_keys()
1006	{
1007	unsigned int state = read_keyboard_state();
1008
1009	/* reset keys */
1010	uint32 ev_time;
1011	ev_time = time(NULL);
1012
1013	if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask)
1014	&& !get_key_state(state, XK_Shift_L))
1015	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT);
1016
1017	if (MASK_HAS_BITS(remote_modifier_state, MapRightShiftMask)
1018	&& !get_key_state(state, XK_Shift_R))
1019	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT);
1020
1021	if (MASK_HAS_BITS(remote_modifier_state, MapLeftCtrlMask)
1022	&& !get_key_state(state, XK_Control_L))
1023	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL);
1024
1025	if (MASK_HAS_BITS(remote_modifier_state, MapRightCtrlMask)
1026	&& !get_key_state(state, XK_Control_R))
1027	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RCTRL);
1028
1029	if (MASK_HAS_BITS(remote_modifier_state, MapLeftAltMask) && !get_key_state(state, XK_Alt_L))
1030	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LALT);
1031
1032	if (MASK_HAS_BITS(remote_modifier_state, MapRightAltMask) &&
1033	!get_key_state(state, XK_Alt_R) && !get_key_state(state, XK_Mode_switch)
1034	&& !get_key_state(state, XK_ISO_Level3_Shift))
1035	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT);
1036
1037	reset_winkey(ev_time);
1038
1039	if (g_numlock_sync)
1040	rdp_send_input(ev_time, RDP_INPUT_SYNCHRONIZE, 0, ui_get_numlock_state(state), 0);
1041	}
1042
1043
1044	static void
1045	update_modifier_state(uint8 scancode, RD_BOOL pressed)
1046	{
1047	#ifdef WITH_DEBUG_KBD
1048	uint16 old_modifier_state;
1049
1050	old_modifier_state = remote_modifier_state;
1051	#endif
1052
1053	switch (scancode)
1054	{
1055	case SCANCODE_CHAR_LSHIFT:
1056	MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed);
1057	break;
1058	case SCANCODE_CHAR_RSHIFT:
1059	MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed);
1060	break;
1061	case SCANCODE_CHAR_LCTRL:
1062	MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed);
1063	break;
1064	case SCANCODE_CHAR_RCTRL:
1065	MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed);
1066	break;
1067	case SCANCODE_CHAR_LALT:
1068	MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed);
1069	break;
1070	case SCANCODE_CHAR_RALT:
1071	MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed);
1072	break;
1073	case SCANCODE_CHAR_LWIN:
1074	MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed);
1075	break;
1076	case SCANCODE_CHAR_RWIN:
1077	MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed);
1078	break;
1079	case SCANCODE_CHAR_NUMLOCK:
1080	/* KeyReleases for NumLocks are sent immediately. Toggle the
1081	modifier state only on Keypress */
1082	if (pressed && !g_numlock_sync)
1083	{
1084	RD_BOOL newNumLockState;
1085	newNumLockState =
1086	(MASK_HAS_BITS
1087	(remote_modifier_state, MapNumLockMask) == False);
1088	MASK_CHANGE_BIT(remote_modifier_state,
1089	MapNumLockMask, newNumLockState);
1090	}
1091	}
1092
1093	#ifdef WITH_DEBUG_KBD
1094	if (old_modifier_state != remote_modifier_state)
1095	{
1096	DEBUG_KBD(("Before updating modifier_state:0x%x, pressed=0x%x\n",
1097	old_modifier_state, pressed));
1098	DEBUG_KBD(("After updating modifier_state:0x%x\n", remote_modifier_state));
1099	}
1100	#endif
1101
1102	}
1103
1104	/* Send keyboard input */
1105	void
1106	rdp_send_scancode(uint32 time, uint16 flags, uint8 scancode)
1107	{
1108	update_modifier_state(scancode, !(flags & RDP_KEYRELEASE));
1109
1110	if (scancode & SCANCODE_EXTENDED)
1111	{
1112	DEBUG_KBD(("Sending extended scancode=0x%x, flags=0x%x\n",
1113	scancode & ~SCANCODE_EXTENDED, flags));
1114	rdp_send_input(time, RDP_INPUT_SCANCODE, flags \| KBD_FLAG_EXT,
1115	scancode & ~SCANCODE_EXTENDED, 0);
1116	}
1117	else
1118	{
1119	DEBUG_KBD(("Sending scancode=0x%x, flags=0x%x\n", scancode, flags));
1120	rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0);
1121	}
1122	}

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source: vbox/trunk/src/VBox/RDP/client/xkeymap.c@ 48765

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