xkeymap.c@ 33656

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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 1999-2007
6	Copyright (C) Peter Astrand <astrand@cendio.se> 2003-2007
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 2 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, write to the Free Software
20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21	*/
22
23	/*
24	* Oracle GPL Disclaimer: For the avoidance of doubt, except that if any license choice
25	* other than GPL or LGPL is available it will apply instead, Oracle elects to use only
26	* the General Public License version 2 (GPLv2) at this time for any software where
27	* a choice of GPL license versions is made available with the language indicating
28	* that GPLv2 or any later version may be used, or where a choice of which version
29	* of the GPL is applied is otherwise unspecified.
30	*/
31
32	#ifdef RDP2VNC
33	#include "vnc/x11stubs.h"
34	#else
35	#include <X11/Xlib.h>
36	#include <X11/keysym.h>
37	#endif
38
39	#include <ctype.h>
40	#include <limits.h>
41	#include <time.h>
42	#include <string.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 int min_keycode;
65	static uint16 remote_modifier_state = 0;
66	static uint16 saved_remote_modifier_state = 0;
67
68	static void update_modifier_state(uint8 scancode, RD_BOOL pressed);
69
70	/* Free key_translation structure, including linked list */
71	static void
72	free_key_translation(key_translation * ptr)
73	{
74	key_translation *next;
75
76	while (ptr)
77	{
78	next = ptr->next;
79	xfree(ptr);
80	ptr = next;
81	}
82	}
83
84	static void
85	add_to_keymap(char keyname, uint8 scancode, uint16 modifiers, char mapname)
86	{
87	KeySym keysym;
88	key_translation *tr;
89
90	keysym = XStringToKeysym(keyname);
91	if (keysym == NoSymbol)
92	{
93	DEBUG_KBD(("Bad keysym \"%s\" in keymap %s (ignoring)\n", keyname, mapname));
94	return;
95	}
96
97	DEBUG_KBD(("Adding translation, keysym=0x%x, scancode=0x%x, "
98	"modifiers=0x%x\n", (unsigned int) keysym, scancode, modifiers));
99
100	tr = (key_translation *) xmalloc(sizeof(key_translation));
101	memset(tr, 0, sizeof(key_translation));
102	tr->scancode = scancode;
103	tr->modifiers = modifiers;
104	free_key_translation(keymap[keysym & KEYMAP_MASK]);
105	keymap[keysym & KEYMAP_MASK] = tr;
106
107	return;
108	}
109
110	static void
111	add_sequence(char rest, char mapname)
112	{
113	KeySym keysym;
114	key_translation tr, *prev_next;
115	size_t chars;
116	char keyname[KEYMAP_MAX_LINE_LENGTH];
117
118	/* Skip over whitespace after the sequence keyword */
119	chars = strspn(rest, " \t");
120	rest += chars;
121
122	/* Fetch the keysym name */
123	chars = strcspn(rest, " \t\0");
124	STRNCPY(keyname, rest, chars + 1);
125	rest += chars;
126
127	keysym = XStringToKeysym(keyname);
128	if (keysym == NoSymbol)
129	{
130	DEBUG_KBD(("Bad keysym \"%s\" in keymap %s (ignoring line)\n", keyname, mapname));
131	return;
132	}
133
134
135	DEBUG_KBD(("Adding sequence for keysym (0x%lx, %s) -> ", keysym, keyname));
136
137	free_key_translation(keymap[keysym & KEYMAP_MASK]);
138	prev_next = &keymap[keysym & KEYMAP_MASK];
139
140	while (*rest)
141	{
142	/* Skip whitespace */
143	chars = strspn(rest, " \t");
144	rest += chars;
145
146	/* Fetch the keysym name */
147	chars = strcspn(rest, " \t\0");
148	STRNCPY(keyname, rest, chars + 1);
149	rest += chars;
150
151	keysym = XStringToKeysym(keyname);
152	if (keysym == NoSymbol)
153	{
154	DEBUG_KBD(("Bad keysym \"%s\" in keymap %s (ignoring line)\n", keyname,
155	mapname));
156	return;
157	}
158
159	/* Allocate space for key_translation structure */
160	tr = (key_translation *) xmalloc(sizeof(key_translation));
161	memset(tr, 0, sizeof(key_translation));
162	*prev_next = tr;
163	prev_next = &tr->next;
164	tr->seq_keysym = keysym;
165
166	DEBUG_KBD(("0x%x, ", (unsigned int) keysym));
167	}
168	DEBUG_KBD(("\n"));
169	}
170
171	RD_BOOL
172	xkeymap_from_locale(const char *locale)
173	{
174	char str, ptr;
175	FILE *fp;
176
177	/* Create a working copy */
178	str = xstrdup(locale);
179
180	/* Truncate at dot and at */
181	ptr = strrchr(str, '.');
182	if (ptr)
183	*ptr = '\0';
184	ptr = strrchr(str, '@');
185	if (ptr)
186	*ptr = '\0';
187
188	/* Replace _ with - */
189	ptr = strrchr(str, '_');
190	if (ptr)
191	*ptr = '-';
192
193	/* Convert to lowercase */
194	ptr = str;
195	while (*ptr)
196	{
197	ptr = tolower((int) ptr);
198	ptr++;
199	}
200
201	/* Try to open this keymap (da-dk) */
202	fp = xkeymap_open(str);
203	if (fp == NULL)
204	{
205	/* Truncate at dash */
206	ptr = strrchr(str, '-');
207	if (ptr)
208	*ptr = '\0';
209
210	/* Try the short name (da) */
211	fp = xkeymap_open(str);
212	}
213
214	if (fp)
215	{
216	fclose(fp);
217	STRNCPY(g_keymapname, str, sizeof(g_keymapname));
218	xfree(str);
219	return True;
220	}
221
222	xfree(str);
223	return False;
224	}
225
226
227	/* Joins two path components. The result should be freed with
228	xfree(). */
229	static char *
230	pathjoin(const char a, const char b)
231	{
232	char *result;
233	result = xmalloc(PATH_MAX * 2 + 1);
234
235	if (b[0] == '/')
236	{
237	strncpy(result, b, PATH_MAX);
238	}
239	else
240	{
241	strncpy(result, a, PATH_MAX);
242	strcat(result, "/");
243	strncat(result, b, PATH_MAX);
244	}
245	return result;
246	}
247
248	/* Try to open a keymap with fopen() */
249	FILE *
250	xkeymap_open(const char *filename)
251	{
252	char path1, path2;
253	char *home;
254	FILE *fp;
255
256	/* Try ~/.rdesktop/keymaps */
257	home = getenv("HOME");
258	if (home)
259	{
260	path1 = pathjoin(home, ".rdesktop/keymaps");
261	path2 = pathjoin(path1, filename);
262	xfree(path1);
263	fp = fopen(path2, "r");
264	xfree(path2);
265	if (fp)
266	return fp;
267	}
268
269	/* Try KEYMAP_PATH */
270	path1 = pathjoin(KEYMAP_PATH, filename);
271	fp = fopen(path1, "r");
272	xfree(path1);
273	if (fp)
274	return fp;
275
276	/* Try current directory, in case we are running from the source
277	tree */
278	path1 = pathjoin("keymaps", filename);
279	fp = fopen(path1, "r");
280	xfree(path1);
281	if (fp)
282	return fp;
283
284	return NULL;
285	}
286
287	static RD_BOOL
288	xkeymap_read(char *mapname)
289	{
290	FILE *fp;
291	char line[KEYMAP_MAX_LINE_LENGTH];
292	unsigned int line_num = 0;
293	unsigned int line_length = 0;
294	char keyname, p;
295	char *line_rest;
296	uint8 scancode;
297	uint16 modifiers;
298
299	fp = xkeymap_open(mapname);
300	if (fp == NULL)
301	{
302	error("Failed to open keymap %s\n", mapname);
303	return False;
304	}
305
306	/* FIXME: More tolerant on white space */
307	while (fgets(line, sizeof(line), fp) != NULL)
308	{
309	line_num++;
310
311	/* Replace the \n with \0 */
312	p = strchr(line, '\n');
313	if (p != NULL)
314	*p = 0;
315
316	line_length = strlen(line);
317
318	/* Completely empty line */
319	if (strspn(line, " \t\n\r\f\v") == line_length)
320	{
321	continue;
322	}
323
324	/* Include */
325	if (str_startswith(line, "include "))
326	{
327	if (!xkeymap_read(line + sizeof("include ") - 1))
328	return False;
329	continue;
330	}
331
332	/* map */
333	if (str_startswith(line, "map "))
334	{
335	g_keylayout = strtoul(line + sizeof("map ") - 1, NULL, 16);
336	DEBUG_KBD(("Keylayout 0x%x\n", g_keylayout));
337	continue;
338	}
339
340	/* compose */
341	if (str_startswith(line, "enable_compose"))
342	{
343	DEBUG_KBD(("Enabling compose handling\n"));
344	g_enable_compose = True;
345	continue;
346	}
347
348	/* sequence */
349	if (str_startswith(line, "sequence"))
350	{
351	add_sequence(line + sizeof("sequence") - 1, mapname);
352	continue;
353	}
354
355	/* keyboard_type */
356	if (str_startswith(line, "keyboard_type "))
357	{
358	g_keyboard_type = strtol(line + sizeof("keyboard_type ") - 1, NULL, 16);
359	DEBUG_KBD(("keyboard_type 0x%x\n", g_keyboard_type));
360	continue;
361	}
362
363	/* keyboard_subtype */
364	if (str_startswith(line, "keyboard_subtype "))
365	{
366	g_keyboard_subtype =
367	strtol(line + sizeof("keyboard_subtype ") - 1, NULL, 16);
368	DEBUG_KBD(("keyboard_subtype 0x%x\n", g_keyboard_subtype));
369	continue;
370	}
371
372	/* keyboard_functionkeys */
373	if (str_startswith(line, "keyboard_functionkeys "))
374	{
375	g_keyboard_functionkeys =
376	strtol(line + sizeof("keyboard_functionkeys ") - 1, NULL, 16);
377	DEBUG_KBD(("keyboard_functionkeys 0x%x\n", g_keyboard_functionkeys));
378	continue;
379	}
380
381	/* Comment */
382	if (line[0] == '#')
383	{
384	continue;
385	}
386
387	/* Normal line */
388	keyname = line;
389	p = strchr(line, ' ');
390	if (p == NULL)
391	{
392	error("Bad line %d in keymap %s\n", line_num, mapname);
393	continue;
394	}
395	else
396	{
397	*p = 0;
398	}
399
400	/* scancode */
401	p++;
402	scancode = strtol(p, &line_rest, 16);
403
404	/* flags */
405	/* FIXME: Should allow case-insensitive flag names.
406	Fix by using lex+yacc... */
407	modifiers = 0;
408	if (strstr(line_rest, "altgr"))
409	{
410	MASK_ADD_BITS(modifiers, MapAltGrMask);
411	}
412
413	if (strstr(line_rest, "shift"))
414	{
415	MASK_ADD_BITS(modifiers, MapLeftShiftMask);
416	}
417
418	if (strstr(line_rest, "numlock"))
419	{
420	MASK_ADD_BITS(modifiers, MapNumLockMask);
421	}
422
423	if (strstr(line_rest, "localstate"))
424	{
425	MASK_ADD_BITS(modifiers, MapLocalStateMask);
426	}
427
428	if (strstr(line_rest, "inhibit"))
429	{
430	MASK_ADD_BITS(modifiers, MapInhibitMask);
431	}
432
433	add_to_keymap(keyname, scancode, modifiers, mapname);
434
435	if (strstr(line_rest, "addupper"))
436	{
437	/* Automatically add uppercase key, with same modifiers
438	plus shift */
439	for (p = keyname; *p; p++)
440	p = toupper((int) p);
441	MASK_ADD_BITS(modifiers, MapLeftShiftMask);
442	add_to_keymap(keyname, scancode, modifiers, mapname);
443	}
444	}
445
446	fclose(fp);
447	return True;
448	}
449
450
451	/* Before connecting and creating UI */
452	void
453	xkeymap_init(void)
454	{
455	unsigned int max_keycode;
456
457	if (strcmp(g_keymapname, "none"))
458	{
459	if (xkeymap_read(g_keymapname))
460	keymap_loaded = True;
461	}
462
463	XDisplayKeycodes(g_display, &min_keycode, (int *) &max_keycode);
464	}
465
466	static void
467	send_winkey(uint32 ev_time, RD_BOOL pressed, RD_BOOL leftkey)
468	{
469	uint8 winkey;
470
471	if (leftkey)
472	winkey = SCANCODE_CHAR_LWIN;
473	else
474	winkey = SCANCODE_CHAR_RWIN;
475
476	if (pressed)
477	{
478	if (g_use_rdp5)
479	{
480	rdp_send_scancode(ev_time, RDP_KEYPRESS, winkey);
481	}
482	else
483	{
484	/* RDP4 doesn't support winkey. Fake with Ctrl-Esc */
485	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LCTRL);
486	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_ESC);
487	}
488	}
489	else
490	{
491	/* key released */
492	if (g_use_rdp5)
493	{
494	rdp_send_scancode(ev_time, RDP_KEYRELEASE, winkey);
495	}
496	else
497	{
498	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_ESC);
499	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL);
500	}
501	}
502	}
503
504	static void
505	reset_winkey(uint32 ev_time)
506	{
507	if (g_use_rdp5)
508	{
509	/* For some reason, it seems to suffice to release
510	either the left or right winkey. */
511	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LWIN);
512	}
513	}
514
515	/* Handle special key combinations */
516	RD_BOOL
517	handle_special_keys(uint32 keysym, unsigned int state, uint32 ev_time, RD_BOOL pressed)
518	{
519	switch (keysym)
520	{
521	case XK_Return:
522	if ((get_key_state(state, XK_Alt_L) \|\| get_key_state(state, XK_Alt_R))
523	&& (get_key_state(state, XK_Control_L)
524	\|\| get_key_state(state, XK_Control_R)))
525	{
526	/* Ctrl-Alt-Enter: toggle full screen */
527	if (pressed)
528	xwin_toggle_fullscreen();
529	return True;
530	}
531	break;
532
533	case XK_Break:
534	#ifdef RDESKTOP_KBD_CODE
535	/* Send Break sequence E0 46 E0 C6 */
536	if (pressed)
537	{
538	rdp_send_scancode(ev_time, RDP_KEYPRESS,
539	(SCANCODE_EXTENDED \| 0x46));
540	rdp_send_scancode(ev_time, RDP_KEYPRESS,
541	(SCANCODE_EXTENDED \| 0xc6));
542	}
543	/* No release sequence */
544	return True;
545	#else
546	/* Send Break sequence E0 46 E0 C6 */
547	if (pressed)
548	{
549	/* VirtualBox code begin */
550	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT, 0x46, 0);
551	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT \| KBD_FLAG_UP, 0x46, 0);
552	/* VirtualBox code end */
553	}
554	/* No release sequence */
555	return True;
556	#endif /* RDESKTOP_KBD_CODE */
557	break;
558
559	case XK_Pause:
560	#ifdef RDESKTOP_KBD_CODE
561	/* According to MS Keyboard Scan Code
562	Specification, pressing Pause should result
563	in E1 1D 45 E1 9D C5. I'm not exactly sure
564	of how this is supposed to be sent via
565	RDP. The code below seems to work, but with
566	the side effect that Left Ctrl stays
567	down. Therefore, we release it when Pause
568	is released. */
569	if (pressed)
570	{
571	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xe1, 0);
572	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x1d, 0);
573	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x45, 0);
574	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xe1, 0);
575	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x9d, 0);
576	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xc5, 0);
577	}
578	else
579	{
580	/* Release Left Ctrl */
581	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYRELEASE,
582	0x1d, 0);
583	}
584	return True;
585	#else
586	/* Send Break sequence E1 1D 45 E1 9D C5 */
587	if (pressed)
588	{
589	/* VirtualBox code begin */
590	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT2, 0x1d, 0);
591	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x45, 0);
592	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT2 \| KBD_FLAG_UP, 0x1d, 0);
593	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_UP, 0x45, 0);
594	/* VirtualBox code end */
595	}
596	/* No release sequence */
597	return True;
598	#endif /* RDESKTOP_KBD_CODE */
599	break;
600
601	case XK_Meta_L: /* Windows keys */
602	case XK_Super_L:
603	case XK_Hyper_L:
604	send_winkey(ev_time, pressed, True);
605	return True;
606	break;
607
608	case XK_Meta_R:
609	case XK_Super_R:
610	case XK_Hyper_R:
611	send_winkey(ev_time, pressed, False);
612	return True;
613	break;
614
615	case XK_space:
616	/* Prevent access to the Windows system menu in single app mode */
617	if (g_win_button_size
618	&& (get_key_state(state, XK_Alt_L) \|\| get_key_state(state, XK_Alt_R)))
619	return True;
620	break;
621
622	case XK_Num_Lock:
623	/* Synchronize on key release */
624	if (g_numlock_sync && !pressed)
625	rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0,
626	ui_get_numlock_state(read_keyboard_state()), 0);
627
628	/* Inhibit */
629	return True;
630	break;
631	case XK_Overlay1_Enable:
632	/* Toggle SeamlessRDP */
633	if (pressed)
634	ui_seamless_toggle();
635	break;
636
637	}
638	return False;
639	}
640
641
642	key_translation
643	xkeymap_translate_key(uint32 keysym, unsigned int keycode, unsigned int state)
644	{
645	key_translation tr = { 0, 0, 0, 0 };
646	key_translation *ptr;
647
648	ptr = keymap[keysym & KEYMAP_MASK];
649	if (ptr)
650	{
651	tr = *ptr;
652	if (tr.seq_keysym == 0) /* Normal scancode translation */
653	{
654	if (MASK_HAS_BITS(tr.modifiers, MapInhibitMask))
655	{
656	DEBUG_KBD(("Inhibiting key\n"));
657	tr.scancode = 0;
658	return tr;
659	}
660
661	if (MASK_HAS_BITS(tr.modifiers, MapLocalStateMask))
662	{
663	/* The modifiers to send for this key should be obtained
664	from the local state. Currently, only shift is implemented. */
665	if (MASK_HAS_BITS(state, ShiftMask))
666	{
667	tr.modifiers = MapLeftShiftMask;
668	}
669	}
670
671	/* Windows interprets CapsLock+Ctrl+key
672	differently from Shift+Ctrl+key. Since we
673	are simulating CapsLock with Shifts, things
674	like Ctrl+f with CapsLock on breaks. To
675	solve this, we are releasing Shift if Ctrl
676	is on, but only if Shift isn't physically pressed. */
677	if (MASK_HAS_BITS(tr.modifiers, MapShiftMask)
678	&& MASK_HAS_BITS(remote_modifier_state, MapCtrlMask)
679	&& !MASK_HAS_BITS(state, ShiftMask))
680	{
681	DEBUG_KBD(("Non-physical Shift + Ctrl pressed, releasing Shift\n"));
682	MASK_REMOVE_BITS(tr.modifiers, MapShiftMask);
683	}
684
685	DEBUG_KBD(("Found scancode translation, scancode=0x%x, modifiers=0x%x\n",
686	tr.scancode, tr.modifiers));
687	}
688	}
689	else
690	{
691	if (keymap_loaded)
692	warning("No translation for (keysym 0x%lx, %s)\n", keysym,
693	get_ksname(keysym));
694
695	/* not in keymap, try to interpret the raw scancode */
696	if (((int) keycode >= min_keycode) && (keycode <= 0x60))
697	{
698	tr.scancode = keycode - min_keycode;
699
700	/* The modifiers to send for this key should be
701	obtained from the local state. Currently, only
702	shift is implemented. */
703	if (MASK_HAS_BITS(state, ShiftMask))
704	{
705	tr.modifiers = MapLeftShiftMask;
706	}
707
708	DEBUG_KBD(("Sending guessed scancode 0x%x\n", tr.scancode));
709	}
710	else
711	{
712	DEBUG_KBD(("No good guess for keycode 0x%x found\n", keycode));
713	}
714	}
715
716	return tr;
717	}
718
719	static RD_BOOL
720	is_modifier(uint8 scancode)
721	{
722	switch (scancode)
723	{
724	case SCANCODE_CHAR_LSHIFT:
725	case SCANCODE_CHAR_RSHIFT:
726	case SCANCODE_CHAR_LCTRL:
727	case SCANCODE_CHAR_RCTRL:
728	case SCANCODE_CHAR_LALT:
729	case SCANCODE_CHAR_RALT:
730	case SCANCODE_CHAR_LWIN:
731	case SCANCODE_CHAR_RWIN:
732	case SCANCODE_CHAR_NUMLOCK:
733	return True;
734	default:
735	break;
736	}
737	return False;
738	}
739
740
741	void
742	xkeymap_send_keys(uint32 keysym, unsigned int keycode, unsigned int state, uint32 ev_time,
743	RD_BOOL pressed, uint8 nesting)
744	{
745	key_translation tr, *ptr;
746	tr = xkeymap_translate_key(keysym, keycode, state);
747
748	if (tr.seq_keysym == 0)
749	{
750	/* Scancode translation */
751	if (tr.scancode == 0)
752	return;
753
754	save_remote_modifiers(tr.scancode);
755	ensure_remote_modifiers(ev_time, tr);
756	rdp_send_scancode(ev_time, pressed ? RDP_KEYPRESS : RDP_KEYRELEASE, tr.scancode);
757	restore_remote_modifiers(ev_time, tr.scancode);
758	return;
759	}
760
761	/* Sequence, only on key down */
762	if (pressed)
763	{
764	ptr = &tr;
765	do
766	{
767	DEBUG_KBD(("Handling sequence element, keysym=0x%x\n",
768	(unsigned int) ptr->seq_keysym));
769
770	if (nesting++ > 32)
771	{
772	error("Sequence nesting too deep\n");
773	return;
774	}
775
776	xkeymap_send_keys(ptr->seq_keysym, keycode, state, ev_time, True, nesting);
777	xkeymap_send_keys(ptr->seq_keysym, keycode, state, ev_time, False, nesting);
778	ptr = ptr->next;
779	}
780	while (ptr);
781	}
782	}
783
784	uint16
785	xkeymap_translate_button(unsigned int button)
786	{
787	switch (button)
788	{
789	case Button1: /* left */
790	return MOUSE_FLAG_BUTTON1;
791	case Button2: /* middle */
792	return MOUSE_FLAG_BUTTON3;
793	case Button3: /* right */
794	return MOUSE_FLAG_BUTTON2;
795	case Button4: /* wheel up */
796	return MOUSE_FLAG_BUTTON4;
797	case Button5: /* wheel down */
798	return MOUSE_FLAG_BUTTON5;
799	}
800
801	return 0;
802	}
803
804	char *
805	get_ksname(uint32 keysym)
806	{
807	char *ksname = NULL;
808
809	if (keysym == NoSymbol)
810	ksname = "NoSymbol";
811	else if (!(ksname = XKeysymToString(keysym)))
812	ksname = "(no name)";
813
814	return ksname;
815	}
816
817	void
818	save_remote_modifiers(uint8 scancode)
819	{
820	if (is_modifier(scancode))
821	return;
822
823	saved_remote_modifier_state = remote_modifier_state;
824	}
825
826	void
827	restore_remote_modifiers(uint32 ev_time, uint8 scancode)
828	{
829	key_translation dummy;
830
831	if (is_modifier(scancode))
832	return;
833
834	dummy.scancode = 0;
835	dummy.modifiers = saved_remote_modifier_state;
836	ensure_remote_modifiers(ev_time, dummy);
837	}
838
839	void
840	ensure_remote_modifiers(uint32 ev_time, key_translation tr)
841	{
842	/* If this key is a modifier, do nothing */
843	if (is_modifier(tr.scancode))
844	return;
845
846	if (!g_numlock_sync)
847	{
848	/* NumLock */
849	if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)
850	!= MASK_HAS_BITS(remote_modifier_state, MapNumLockMask))
851	{
852	/* The remote modifier state is not correct */
853	uint16 new_remote_state;
854
855	if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask))
856	{
857	DEBUG_KBD(("Remote NumLock state is incorrect, activating NumLock.\n"));
858	new_remote_state = KBD_FLAG_NUMLOCK;
859	remote_modifier_state = MapNumLockMask;
860	}
861	else
862	{
863	DEBUG_KBD(("Remote NumLock state is incorrect, deactivating NumLock.\n"));
864	new_remote_state = 0;
865	remote_modifier_state = 0;
866	}
867
868	rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0, new_remote_state, 0);
869	}
870	}
871
872
873	/* Shift. Left shift and right shift are treated as equal; either is fine. */
874	if (MASK_HAS_BITS(tr.modifiers, MapShiftMask)
875	!= MASK_HAS_BITS(remote_modifier_state, MapShiftMask))
876	{
877	/* The remote modifier state is not correct */
878	if (MASK_HAS_BITS(tr.modifiers, MapLeftShiftMask))
879	{
880	/* Needs left shift. Send down. */
881	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LSHIFT);
882	}
883	else if (MASK_HAS_BITS(tr.modifiers, MapRightShiftMask))
884	{
885	/* Needs right shift. Send down. */
886	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RSHIFT);
887	}
888	else
889	{
890	/* Should not use this modifier. Send up for shift currently pressed. */
891	if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask))
892	/* Left shift is down */
893	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT);
894	else
895	/* Right shift is down */
896	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT);
897	}
898	}
899
900	/* AltGr */
901	if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask)
902	!= MASK_HAS_BITS(remote_modifier_state, MapAltGrMask))
903	{
904	/* The remote modifier state is not correct */
905	if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask))
906	{
907	/* Needs this modifier. Send down. */
908	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RALT);
909	}
910	else
911	{
912	/* Should not use this modifier. Send up. */
913	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT);
914	}
915	}
916
917
918	}
919
920
921	unsigned int
922	read_keyboard_state()
923	{
924	#ifdef RDP2VNC
925	return 0;
926	#else
927	unsigned int state;
928	Window wdummy;
929	int dummy;
930
931	XQueryPointer(g_display, g_wnd, &wdummy, &wdummy, &dummy, &dummy, &dummy, &dummy, &state);
932	return state;
933	#endif
934	}
935
936
937	uint16
938	ui_get_numlock_state(unsigned int state)
939	{
940	uint16 numlock_state = 0;
941
942	if (get_key_state(state, XK_Num_Lock))
943	numlock_state = KBD_FLAG_NUMLOCK;
944
945	return numlock_state;
946	}
947
948
949	void
950	reset_modifier_keys()
951	{
952	unsigned int state = read_keyboard_state();
953
954	/* reset keys */
955	uint32 ev_time;
956	ev_time = time(NULL);
957
958	if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask)
959	&& !get_key_state(state, XK_Shift_L))
960	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT);
961
962	if (MASK_HAS_BITS(remote_modifier_state, MapRightShiftMask)
963	&& !get_key_state(state, XK_Shift_R))
964	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT);
965
966	if (MASK_HAS_BITS(remote_modifier_state, MapLeftCtrlMask)
967	&& !get_key_state(state, XK_Control_L))
968	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL);
969
970	if (MASK_HAS_BITS(remote_modifier_state, MapRightCtrlMask)
971	&& !get_key_state(state, XK_Control_R))
972	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RCTRL);
973
974	if (MASK_HAS_BITS(remote_modifier_state, MapLeftAltMask) && !get_key_state(state, XK_Alt_L))
975	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LALT);
976
977	if (MASK_HAS_BITS(remote_modifier_state, MapRightAltMask) &&
978	!get_key_state(state, XK_Alt_R) && !get_key_state(state, XK_Mode_switch)
979	&& !get_key_state(state, XK_ISO_Level3_Shift))
980	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT);
981
982	reset_winkey(ev_time);
983
984	if (g_numlock_sync)
985	rdp_send_input(ev_time, RDP_INPUT_SYNCHRONIZE, 0, ui_get_numlock_state(state), 0);
986	}
987
988
989	static void
990	update_modifier_state(uint8 scancode, RD_BOOL pressed)
991	{
992	#ifdef WITH_DEBUG_KBD
993	uint16 old_modifier_state;
994
995	old_modifier_state = remote_modifier_state;
996	#endif
997
998	switch (scancode)
999	{
1000	case SCANCODE_CHAR_LSHIFT:
1001	MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed);
1002	break;
1003	case SCANCODE_CHAR_RSHIFT:
1004	MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed);
1005	break;
1006	case SCANCODE_CHAR_LCTRL:
1007	MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed);
1008	break;
1009	case SCANCODE_CHAR_RCTRL:
1010	MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed);
1011	break;
1012	case SCANCODE_CHAR_LALT:
1013	MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed);
1014	break;
1015	case SCANCODE_CHAR_RALT:
1016	MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed);
1017	break;
1018	case SCANCODE_CHAR_LWIN:
1019	MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed);
1020	break;
1021	case SCANCODE_CHAR_RWIN:
1022	MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed);
1023	break;
1024	case SCANCODE_CHAR_NUMLOCK:
1025	/* KeyReleases for NumLocks are sent immediately. Toggle the
1026	modifier state only on Keypress */
1027	if (pressed && !g_numlock_sync)
1028	{
1029	RD_BOOL newNumLockState;
1030	newNumLockState =
1031	(MASK_HAS_BITS
1032	(remote_modifier_state, MapNumLockMask) == False);
1033	MASK_CHANGE_BIT(remote_modifier_state,
1034	MapNumLockMask, newNumLockState);
1035	}
1036	}
1037
1038	#ifdef WITH_DEBUG_KBD
1039	if (old_modifier_state != remote_modifier_state)
1040	{
1041	DEBUG_KBD(("Before updating modifier_state:0x%x, pressed=0x%x\n",
1042	old_modifier_state, pressed));
1043	DEBUG_KBD(("After updating modifier_state:0x%x\n", remote_modifier_state));
1044	}
1045	#endif
1046
1047	}
1048
1049	/* Send keyboard input */
1050	void
1051	rdp_send_scancode(uint32 time, uint16 flags, uint8 scancode)
1052	{
1053	update_modifier_state(scancode, !(flags & RDP_KEYRELEASE));
1054
1055	if (scancode & SCANCODE_EXTENDED)
1056	{
1057	DEBUG_KBD(("Sending extended scancode=0x%x, flags=0x%x\n",
1058	scancode & ~SCANCODE_EXTENDED, flags));
1059	rdp_send_input(time, RDP_INPUT_SCANCODE, flags \| KBD_FLAG_EXT,
1060	scancode & ~SCANCODE_EXTENDED, 0);
1061	}
1062	else
1063	{
1064	DEBUG_KBD(("Sending scancode=0x%x, flags=0x%x\n", scancode, flags));
1065	rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0);
1066	}
1067	}

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source: vbox/trunk/src/VBox/RDP/client/xkeymap.c@ 33656

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