xkeymap.c@ 69308

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rdesktop 1.8.3 modified for VBox
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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 2003-2008 Peter Astrand <[email protected]> for Cendio AB
7	Copyright 2014 Henrik Andersson <[email protected]> for Cendio AB
8
9	This program is free software: you can redistribute it and/or modify
10	it under the terms of the GNU General Public License as published by
11	the Free Software Foundation, either version 3 of the License, or
12	(at your option) any later version.
13
14	This program is distributed in the hope that it will be useful,
15	but WITHOUT ANY WARRANTY; without even the implied warranty of
16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17	GNU General Public License for more details.
18
19	You should have received a copy of the GNU General Public License
20	along with this program. If not, see <http://www.gnu.org/licenses/>.
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 <assert.h>
44	#include "rdesktop.h"
45	#include "scancodes.h"
46
47	#define KEYMAP_SIZE 0x7f+1
48	#define KEYMAP_MASK 0x7f
49	#define KEYMAP_MAX_LINE_LENGTH 80
50
51	extern Display *g_display;
52	extern Window g_wnd;
53	extern char g_keymapname[16];
54	extern unsigned int g_keylayout;
55	extern int g_keyboard_type;
56	extern int g_keyboard_subtype;
57	extern int g_keyboard_functionkeys;
58	extern int g_win_button_size;
59	extern RD_BOOL g_enable_compose;
60	extern RDP_VERSION g_rdp_version;
61	extern RD_BOOL g_numlock_sync;
62
63	static RD_BOOL keymap_loaded;
64	static key_translation_entry *keymap[KEYMAP_SIZE];
65	static KeySym keypress_keysyms[256];
66	static int min_keycode;
67	static uint16 remote_modifier_state = 0;
68	static uint16 saved_remote_modifier_state = 0;
69
70	static void update_modifier_state(uint8 scancode, RD_BOOL pressed);
71
72	/* Free key_translation structure, including linked list */
73	static void
74	free_key_translation(key_translation * ptr)
75	{
76	key_translation *next;
77
78	while (ptr)
79	{
80	next = ptr->next;
81	xfree(ptr);
82	ptr = next;
83	}
84	}
85
86	/* Free the key_translation_entry for a given keysym and remove from the table */
87	static void
88	delete_key_translation_entry(KeySym keysym)
89	{
90	uint32 hash;
91	key_translation_entry *ptr;
92	key_translation_entry *next;
93	key_translation_entry *prev;
94	key_translation_entry tmp;
95
96	/* Faking a prev node allows us to keep the algorithm simple */
97	hash = keysym & KEYMAP_MASK;
98	ptr = keymap[hash];
99	tmp.next = ptr;
100	prev = &tmp;
101
102	while (ptr)
103	{
104	next = ptr->next;
105	if (ptr->keysym == keysym)
106	{
107	free_key_translation(ptr->tr);
108	prev->next = next;
109	xfree(ptr);
110	}
111	else
112	{
113	prev = ptr;
114	}
115
116	ptr = next;
117	}
118
119	/* Copy pointer back from our fake node */
120	keymap[hash] = tmp.next;
121	}
122
123	/* Allocate and return a new entry in the translation table */
124	static key_translation_entry *
125	new_key_translation_entry(KeySym keysym)
126	{
127	uint32 hash;
128	key_translation_entry *entry;
129
130	/* Clear out any existing entry */
131	delete_key_translation_entry(keysym);
132
133	/* Allocate the new one */
134	entry = (key_translation_entry *) xmalloc(sizeof(key_translation_entry));
135	memset(entry, 0, sizeof(key_translation_entry));
136	entry->keysym = keysym;
137
138	/* And insert it at head of list */
139	hash = keysym & KEYMAP_MASK;
140	entry->next = keymap[hash];
141	keymap[hash] = entry;
142
143	return entry;
144	}
145
146	/* Retrieve the key_translation_entry for a given keysym */
147	static key_translation_entry *
148	get_key_translation_entry(uint32 keysym)
149	{
150	key_translation_entry *ptr;
151	key_translation_entry *next;
152
153	ptr = keymap[keysym & KEYMAP_MASK];
154
155	while (ptr)
156	{
157	next = ptr->next;
158	if (ptr->keysym == keysym)
159	return ptr;
160
161	ptr = next;
162	}
163
164	/* Not found */
165	return NULL;
166	}
167
168	static void
169	add_to_keymap(char keyname, uint8 scancode, uint16 modifiers, char mapname)
170	{
171	KeySym keysym;
172	key_translation_entry *entry;
173
174	keysym = XStringToKeysym(keyname);
175	if (keysym == NoSymbol)
176	{
177	DEBUG_KBD(("Bad keysym \"%s\" in keymap %s (ignoring)\n", keyname, mapname));
178	return;
179	}
180
181	DEBUG_KBD(("Adding translation, keysym=0x%x, scancode=0x%x, "
182	"modifiers=0x%x\n", (unsigned int) keysym, scancode, modifiers));
183
184	/* Make a new entry in the table */
185	entry = new_key_translation_entry(keysym);
186
187	/* And add the new translation to it */
188	entry->tr = (key_translation *) xmalloc(sizeof(key_translation));
189	memset(entry->tr, 0, sizeof(key_translation));
190	entry->tr->scancode = scancode;
191	entry->tr->modifiers = modifiers;
192
193	return;
194	}
195
196	static void
197	add_sequence(char rest, char mapname)
198	{
199	KeySym keysym;
200	KeySym seq_keysym;
201	key_translation_entry *entry;
202	key_translation tr, *prev_next;
203	size_t chars;
204	char keyname[KEYMAP_MAX_LINE_LENGTH];
205
206	/* Skip over whitespace after the sequence keyword */
207	chars = strspn(rest, " \t");
208	rest += chars;
209
210	/* Fetch the keysym name */
211	chars = strcspn(rest, " \t\0");
212	STRNCPY(keyname, rest, chars + 1);
213	rest += chars;
214
215	keysym = XStringToKeysym(keyname);
216	if (keysym == NoSymbol)
217	{
218	DEBUG_KBD(("Bad keysym \"%s\" in keymap %s (ignoring line)\n", keyname, mapname));
219	return;
220	}
221
222	DEBUG_KBD(("Adding sequence for keysym (0x%lx, %s) -> ", keysym, keyname));
223
224	entry = new_key_translation_entry(keysym);
225	prev_next = &(entry->tr);
226
227	while (*rest)
228	{
229	/* Skip whitespace */
230	chars = strspn(rest, " \t");
231	rest += chars;
232
233	/* Fetch the keysym name */
234	chars = strcspn(rest, " \t\0");
235	STRNCPY(keyname, rest, chars + 1);
236	rest += chars;
237
238	/* Handle trailing whitespace */
239	if (*keyname == 0)
240	break;
241
242	seq_keysym = XStringToKeysym(keyname);
243	if (seq_keysym == NoSymbol)
244	{
245	DEBUG_KBD(("Bad keysym \"%s\" in keymap %s (ignoring line)\n", keyname,
246	mapname));
247	delete_key_translation_entry(keysym);
248	return;
249	}
250
251	/* Allocate space for key_translation structure */
252	tr = (key_translation *) xmalloc(sizeof(key_translation));
253	memset(tr, 0, sizeof(key_translation));
254
255	/* Do this straight away so the key_translation won't get orphaned on error */
256	if (!entry->tr)
257	entry->tr = tr;
258
259	*prev_next = tr;
260	prev_next = &tr->next;
261	tr->seq_keysym = seq_keysym;
262
263	DEBUG_KBD(("0x%x, ", (unsigned int) seq_keysym));
264	}
265	DEBUG_KBD(("\n"));
266	}
267
268	RD_BOOL
269	xkeymap_from_locale(const char *locale)
270	{
271	char str, ptr;
272	FILE *fp;
273
274	/* Create a working copy */
275	str = xstrdup(locale);
276
277	/* Truncate at dot and at */
278	ptr = strrchr(str, '.');
279	if (ptr)
280	*ptr = '\0';
281	ptr = strrchr(str, '@');
282	if (ptr)
283	*ptr = '\0';
284
285	/* Replace _ with - */
286	ptr = strrchr(str, '_');
287	if (ptr)
288	*ptr = '-';
289
290	/* Convert to lowercase */
291	ptr = str;
292	while (*ptr)
293	{
294	ptr = tolower((int) ptr);
295	ptr++;
296	}
297
298	/* Try to open this keymap (da-dk) */
299	fp = xkeymap_open(str);
300	if (fp == NULL)
301	{
302	/* Truncate at dash */
303	ptr = strrchr(str, '-');
304	if (ptr)
305	*ptr = '\0';
306
307	/* Try the short name (da) */
308	fp = xkeymap_open(str);
309	}
310
311	if (fp)
312	{
313	fclose(fp);
314	STRNCPY(g_keymapname, str, sizeof(g_keymapname));
315	xfree(str);
316	return True;
317	}
318
319	xfree(str);
320	return False;
321	}
322
323
324	/* Joins two path components. The result should be freed with
325	xfree(). */
326	static char *
327	pathjoin(const char a, const char b)
328	{
329	char *result;
330	result = xmalloc(PATH_MAX * 2 + 1);
331
332	if (b[0] == '/')
333	{
334	strncpy(result, b, PATH_MAX);
335	}
336	else
337	{
338	strncpy(result, a, PATH_MAX);
339	strcat(result, "/");
340	strncat(result, b, PATH_MAX);
341	}
342	return result;
343	}
344
345	/* Try to open a keymap with fopen() */
346	FILE *
347	xkeymap_open(const char *filename)
348	{
349	char path1, path2;
350	char *home;
351	FILE *fp;
352
353	/* Try ~/.rdesktop/keymaps */
354	home = getenv("HOME");
355	if (home)
356	{
357	path1 = pathjoin(home, ".rdesktop/keymaps");
358	path2 = pathjoin(path1, filename);
359	xfree(path1);
360	fp = fopen(path2, "r");
361	xfree(path2);
362	if (fp)
363	return fp;
364	}
365
366	/* Try KEYMAP_PATH */
367	path1 = pathjoin(KEYMAP_PATH, filename);
368	fp = fopen(path1, "r");
369	xfree(path1);
370	if (fp)
371	return fp;
372
373	/* Try current directory, in case we are running from the source
374	tree */
375	path1 = pathjoin("keymaps", filename);
376	fp = fopen(path1, "r");
377	xfree(path1);
378	if (fp)
379	return fp;
380
381	return NULL;
382	}
383
384	static RD_BOOL
385	xkeymap_read(char *mapname)
386	{
387	FILE *fp;
388	char line[KEYMAP_MAX_LINE_LENGTH];
389	unsigned int line_num = 0;
390	unsigned int line_length = 0;
391	char keyname, p;
392	char *line_rest;
393	uint8 scancode;
394	uint16 modifiers;
395
396	fp = xkeymap_open(mapname);
397	if (fp == NULL)
398	{
399	error("Failed to open keymap %s\n", mapname);
400	return False;
401	}
402
403	/* FIXME: More tolerant on white space */
404	while (fgets(line, sizeof(line), fp) != NULL)
405	{
406	line_num++;
407
408	/* Replace the \n with \0 */
409	p = strchr(line, '\n');
410	if (p != NULL)
411	*p = 0;
412
413	line_length = strlen(line);
414
415	/* Completely empty line */
416	if (strspn(line, " \t\n\r\f\v") == line_length)
417	{
418	continue;
419	}
420
421	/* Include */
422	if (str_startswith(line, "include "))
423	{
424	if (!xkeymap_read(line + sizeof("include ") - 1))
425	return False;
426	continue;
427	}
428
429	/* map */
430	if (str_startswith(line, "map "))
431	{
432	g_keylayout = strtoul(line + sizeof("map ") - 1, NULL, 16);
433	DEBUG_KBD(("Keylayout 0x%x\n", g_keylayout));
434	continue;
435	}
436
437	/* compose */
438	if (str_startswith(line, "enable_compose"))
439	{
440	DEBUG_KBD(("Enabling compose handling\n"));
441	g_enable_compose = True;
442	continue;
443	}
444
445	/* sequence */
446	if (str_startswith(line, "sequence"))
447	{
448	add_sequence(line + sizeof("sequence") - 1, mapname);
449	continue;
450	}
451
452	/* keyboard_type */
453	if (str_startswith(line, "keyboard_type "))
454	{
455	g_keyboard_type = strtol(line + sizeof("keyboard_type ") - 1, NULL, 16);
456	DEBUG_KBD(("keyboard_type 0x%x\n", g_keyboard_type));
457	continue;
458	}
459
460	/* keyboard_subtype */
461	if (str_startswith(line, "keyboard_subtype "))
462	{
463	g_keyboard_subtype =
464	strtol(line + sizeof("keyboard_subtype ") - 1, NULL, 16);
465	DEBUG_KBD(("keyboard_subtype 0x%x\n", g_keyboard_subtype));
466	continue;
467	}
468
469	/* keyboard_functionkeys */
470	if (str_startswith(line, "keyboard_functionkeys "))
471	{
472	g_keyboard_functionkeys =
473	strtol(line + sizeof("keyboard_functionkeys ") - 1, NULL, 16);
474	DEBUG_KBD(("keyboard_functionkeys 0x%x\n", g_keyboard_functionkeys));
475	continue;
476	}
477
478	/* Comment */
479	if (line[0] == '#')
480	{
481	continue;
482	}
483
484	/* Normal line */
485	keyname = line;
486	p = strchr(line, ' ');
487	if (p == NULL)
488	{
489	error("Bad line %d in keymap %s\n", line_num, mapname);
490	continue;
491	}
492	else
493	{
494	*p = 0;
495	}
496
497	/* scancode */
498	p++;
499	scancode = strtol(p, &line_rest, 16);
500
501	/* flags */
502	/* FIXME: Should allow case-insensitive flag names.
503	Fix by using lex+yacc... */
504	modifiers = 0;
505	if (strstr(line_rest, "altgr"))
506	{
507	MASK_ADD_BITS(modifiers, MapAltGrMask);
508	}
509
510	if (strstr(line_rest, "shift"))
511	{
512	MASK_ADD_BITS(modifiers, MapLeftShiftMask);
513	}
514
515	if (strstr(line_rest, "numlock"))
516	{
517	MASK_ADD_BITS(modifiers, MapNumLockMask);
518	}
519
520	if (strstr(line_rest, "localstate"))
521	{
522	MASK_ADD_BITS(modifiers, MapLocalStateMask);
523	}
524
525	if (strstr(line_rest, "inhibit"))
526	{
527	MASK_ADD_BITS(modifiers, MapInhibitMask);
528	}
529
530	add_to_keymap(keyname, scancode, modifiers, mapname);
531
532	if (strstr(line_rest, "addupper"))
533	{
534	/* Automatically add uppercase key, with same modifiers
535	plus shift */
536	for (p = keyname; *p; p++)
537	p = toupper((int) p);
538	MASK_ADD_BITS(modifiers, MapLeftShiftMask);
539	add_to_keymap(keyname, scancode, modifiers, mapname);
540	}
541	}
542
543	fclose(fp);
544	return True;
545	}
546
547
548	/* Before connecting and creating UI */
549	void
550	xkeymap_init(void)
551	{
552	unsigned int max_keycode;
553
554	if (strcmp(g_keymapname, "none"))
555	{
556	if (xkeymap_read(g_keymapname))
557	keymap_loaded = True;
558	}
559
560	XDisplayKeycodes(g_display, &min_keycode, (int *) &max_keycode);
561	}
562
563	static void
564	send_winkey(uint32 ev_time, RD_BOOL pressed, RD_BOOL leftkey)
565	{
566	uint8 winkey;
567
568	if (leftkey)
569	winkey = SCANCODE_CHAR_LWIN;
570	else
571	winkey = SCANCODE_CHAR_RWIN;
572
573	if (pressed)
574	{
575	if (g_rdp_version >= RDP_V5)
576	{
577	rdp_send_scancode(ev_time, RDP_KEYPRESS, winkey);
578	}
579	else
580	{
581	/* RDP4 doesn't support winkey. Fake with Ctrl-Esc */
582	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LCTRL);
583	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_ESC);
584	}
585	}
586	else
587	{
588	/* key released */
589	if (g_rdp_version >= RDP_V5)
590	{
591	rdp_send_scancode(ev_time, RDP_KEYRELEASE, winkey);
592	}
593	else
594	{
595	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_ESC);
596	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL);
597	}
598	}
599	}
600
601	static void
602	reset_winkey(uint32 ev_time)
603	{
604	if (g_rdp_version >= RDP_V5)
605	{
606	/* For some reason, it seems to suffice to release
607	either the left or right winkey. */
608	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LWIN);
609	}
610	}
611
612
613	void
614	set_keypress_keysym(unsigned int keycode, KeySym keysym)
615	{
616	if (keycode < 8 \|\| keycode > 255)
617	return;
618	keypress_keysyms[keycode] = keysym;
619	}
620
621
622	KeySym
623	reset_keypress_keysym(unsigned int keycode, KeySym keysym)
624	{
625	KeySym ks;
626	if (keycode < 8 \|\| keycode > 255)
627	return keysym;
628	ks = keypress_keysyms[keycode];
629	if (ks != 0)
630	{
631	keypress_keysyms[keycode] = 0;
632	}
633	else
634	{
635	ks = keysym;
636	}
637
638	return ks;
639	}
640
641
642	/* Handle special key combinations */
643	RD_BOOL
644	handle_special_keys(uint32 keysym, unsigned int state, uint32 ev_time, RD_BOOL pressed)
645	{
646	switch (keysym)
647	{
648	case XK_Return:
649	if ((get_key_state(state, XK_Alt_L) \|\| get_key_state(state, XK_Alt_R))
650	&& (get_key_state(state, XK_Control_L)
651	\|\| get_key_state(state, XK_Control_R)))
652	{
653	/* Ctrl-Alt-Enter: toggle full screen */
654	if (pressed)
655	xwin_toggle_fullscreen();
656	return True;
657	}
658	break;
659
660	case XK_Break:
661	#ifdef RDESKTOP_KBD_CODE
662	/* Send Break sequence E0 46 E0 C6 */
663	if (pressed)
664	{
665	rdp_send_scancode(ev_time, RDP_KEYPRESS,
666	(SCANCODE_EXTENDED \| 0x46));
667	rdp_send_scancode(ev_time, RDP_KEYPRESS,
668	(SCANCODE_EXTENDED \| 0xc6));
669	}
670	/* No release sequence */
671	return True;
672	#else
673	/* Send Break sequence E0 46 E0 C6 */
674	if (pressed)
675	{
676	/* VirtualBox code begin */
677	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT, 0x46, 0);
678	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT \| KBD_FLAG_UP, 0x46, 0);
679	/* VirtualBox code end */
680	}
681	/* No release sequence */
682	return True;
683	#endif /* RDESKTOP_KBD_CODE */
684	break;
685
686	case XK_Pause:
687	#ifdef RDESKTOP_KBD_CODE
688	/* According to MS Keyboard Scan Code
689	Specification, pressing Pause should result
690	in E1 1D 45 E1 9D C5. I'm not exactly sure
691	of how this is supposed to be sent via
692	RDP. The code below seems to work, but with
693	the side effect that Left Ctrl stays
694	down. Therefore, we release it when Pause
695	is released. */
696	if (pressed)
697	{
698	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xe1, 0);
699	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x1d, 0);
700	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x45, 0);
701	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xe1, 0);
702	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x9d, 0);
703	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xc5, 0);
704	}
705	else
706	{
707	/* Release Left Ctrl */
708	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYRELEASE,
709	0x1d, 0);
710	}
711	return True;
712	#else
713	/* Send Break sequence E1 1D 45 E1 9D C5 */
714	if (pressed)
715	{
716	/* VirtualBox code begin */
717	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT2, 0x1d, 0);
718	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x45, 0);
719	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_EXT2 \| KBD_FLAG_UP, 0x1d, 0);
720	rdp_send_input(ev_time, RDP_INPUT_SCANCODE, KBD_FLAG_UP, 0x45, 0);
721	/* VirtualBox code end */
722	}
723	/* No release sequence */
724	return True;
725	#endif /* RDESKTOP_KBD_CODE */
726	break;
727
728	case XK_Meta_L: /* Windows keys */
729	case XK_Super_L:
730	case XK_Hyper_L:
731	send_winkey(ev_time, pressed, True);
732	return True;
733	break;
734
735	case XK_Meta_R:
736	case XK_Super_R:
737	case XK_Hyper_R:
738	send_winkey(ev_time, pressed, False);
739	return True;
740	break;
741
742	case XK_space:
743	/* Prevent access to the Windows system menu in single app mode */
744	if (g_win_button_size
745	&& (get_key_state(state, XK_Alt_L) \|\| get_key_state(state, XK_Alt_R)))
746	return True;
747	break;
748
749	case XK_Num_Lock:
750	/* Synchronize on key release */
751	if (g_numlock_sync && !pressed)
752	rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0,
753	ui_get_numlock_state(read_keyboard_state()), 0);
754
755	/* Inhibit */
756	return True;
757	break;
758	case XK_Overlay1_Enable:
759	/* Toggle SeamlessRDP */
760	if (pressed)
761	ui_seamless_toggle();
762	break;
763	#ifdef WITH_BIRD_VD_HACKS
764	case XK_Left:
765	case XK_Right:
766	{
767	/* Check for typical virtual desktop switching hotkeys:
768	Ctrl-Alt-Left and Ctrl-Alt-Right.
769	Needs to be pressed twice to have any effect... */
770	extern RD_BOOL g_keep_virtual_desktop_shortcuts;
771	extern RD_BOOL g_fullscreen;
772	if ( g_keep_virtual_desktop_shortcuts
773	&& ( ( get_key_state(state, XK_Alt_L)
774	\|\| get_key_state(state, XK_Alt_R))
775	&& ( get_key_state(state, XK_Control_L)
776	\|\| get_key_state(state, XK_Control_R))
777	)
778	)
779	{
780	if (g_fullscreen)
781	xwin_toggle_fullscreen();
782	XUngrabKeyboard(g_display, CurrentTime);
783	return True;
784	}
785	break;
786	}
787	#endif
788	}
789	return False;
790	}
791
792
793	key_translation
794	xkeymap_translate_key(uint32 keysym, unsigned int keycode, unsigned int state)
795	{
796	key_translation tr = { 0, 0, 0, 0 };
797	key_translation *ptr;
798	key_translation_entry *entry;
799
800	entry = get_key_translation_entry(keysym);
801	ptr = entry ? entry->tr : NULL;
802
803	if (ptr)
804	{
805	tr = *ptr;
806	if (tr.seq_keysym == 0) /* Normal scancode translation */
807	{
808	if (MASK_HAS_BITS(tr.modifiers, MapInhibitMask))
809	{
810	DEBUG_KBD(("Inhibiting key\n"));
811	tr.scancode = 0;
812	return tr;
813	}
814
815	if (MASK_HAS_BITS(tr.modifiers, MapLocalStateMask))
816	{
817	/* The modifiers to send for this key should be obtained
818	from the local state. Currently, only shift is implemented. */
819	if (MASK_HAS_BITS(state, ShiftMask))
820	{
821	tr.modifiers = MapLeftShiftMask;
822	}
823	}
824
825	/* Windows interprets CapsLock+Ctrl+key
826	differently from Shift+Ctrl+key. Since we
827	are simulating CapsLock with Shifts, things
828	like Ctrl+f with CapsLock on breaks. To
829	solve this, we are releasing Shift if Ctrl
830	is on, but only if Shift isn't physically pressed. */
831	if (MASK_HAS_BITS(tr.modifiers, MapShiftMask)
832	&& MASK_HAS_BITS(remote_modifier_state, MapCtrlMask)
833	&& !MASK_HAS_BITS(state, ShiftMask))
834	{
835	DEBUG_KBD(("Non-physical Shift + Ctrl pressed, releasing Shift\n"));
836	MASK_REMOVE_BITS(tr.modifiers, MapShiftMask);
837	}
838
839	DEBUG_KBD(("Found scancode translation, scancode=0x%x, modifiers=0x%x\n",
840	tr.scancode, tr.modifiers));
841	}
842	}
843	else
844	{
845	if (keymap_loaded)
846	warning("No translation for (keysym 0x%lx, %s)\n", keysym,
847	get_ksname(keysym));
848
849	/* not in keymap, try to interpret the raw scancode */
850	if (((int) keycode >= min_keycode) && (keycode <= 0x60))
851	{
852	tr.scancode = keycode - min_keycode;
853
854	/* The modifiers to send for this key should be
855	obtained from the local state. Currently, only
856	shift is implemented. */
857	if (MASK_HAS_BITS(state, ShiftMask))
858	{
859	tr.modifiers = MapLeftShiftMask;
860	}
861
862	DEBUG_KBD(("Sending guessed scancode 0x%x\n", tr.scancode));
863	}
864	else
865	{
866	DEBUG_KBD(("No good guess for keycode 0x%x found\n", keycode));
867	}
868	}
869
870	return tr;
871	}
872
873	static RD_BOOL
874	is_modifier(uint8 scancode)
875	{
876	switch (scancode)
877	{
878	case SCANCODE_CHAR_LSHIFT:
879	case SCANCODE_CHAR_RSHIFT:
880	case SCANCODE_CHAR_LCTRL:
881	case SCANCODE_CHAR_RCTRL:
882	case SCANCODE_CHAR_LALT:
883	case SCANCODE_CHAR_RALT:
884	case SCANCODE_CHAR_LWIN:
885	case SCANCODE_CHAR_RWIN:
886	case SCANCODE_CHAR_NUMLOCK:
887	return True;
888	default:
889	break;
890	}
891	return False;
892	}
893
894
895	void
896	xkeymap_send_keys(uint32 keysym, unsigned int keycode, unsigned int state, uint32 ev_time,
897	RD_BOOL pressed, uint8 nesting)
898	{
899	key_translation tr, *ptr;
900	tr = xkeymap_translate_key(keysym, keycode, state);
901
902	if (tr.seq_keysym == 0)
903	{
904	/* Scancode translation */
905	if (tr.scancode == 0)
906	return;
907
908	save_remote_modifiers(tr.scancode);
909	ensure_remote_modifiers(ev_time, tr);
910	rdp_send_scancode(ev_time, pressed ? RDP_KEYPRESS : RDP_KEYRELEASE, tr.scancode);
911	restore_remote_modifiers(ev_time, tr.scancode);
912	return;
913	}
914
915	/* Sequence, only on key down */
916	if (pressed)
917	{
918	ptr = &tr;
919	do
920	{
921	DEBUG_KBD(("Handling sequence element, keysym=0x%x\n",
922	(unsigned int) ptr->seq_keysym));
923
924	if (nesting++ > 32)
925	{
926	error("Sequence nesting too deep\n");
927	return;
928	}
929
930	xkeymap_send_keys(ptr->seq_keysym, keycode, state, ev_time, True, nesting);
931	xkeymap_send_keys(ptr->seq_keysym, keycode, state, ev_time, False, nesting);
932	ptr = ptr->next;
933	}
934	while (ptr);
935	}
936	}
937
938	uint16
939	xkeymap_translate_button(unsigned int button)
940	{
941	switch (button)
942	{
943	case Button1: /* left */
944	return MOUSE_FLAG_BUTTON1;
945	case Button2: /* middle */
946	return MOUSE_FLAG_BUTTON3;
947	case Button3: /* right */
948	return MOUSE_FLAG_BUTTON2;
949	case Button4: /* wheel up */
950	return MOUSE_FLAG_BUTTON4;
951	case Button5: /* wheel down */
952	return MOUSE_FLAG_BUTTON5;
953	}
954
955	return 0;
956	}
957
958	char *
959	get_ksname(uint32 keysym)
960	{
961	char *ksname = NULL;
962
963	if (keysym == NoSymbol)
964	ksname = "NoSymbol";
965	else if (!(ksname = XKeysymToString(keysym)))
966	ksname = "(no name)";
967
968	return ksname;
969	}
970
971	void
972	save_remote_modifiers(uint8 scancode)
973	{
974	if (is_modifier(scancode))
975	return;
976
977	saved_remote_modifier_state = remote_modifier_state;
978	}
979
980	void
981	restore_remote_modifiers(uint32 ev_time, uint8 scancode)
982	{
983	key_translation dummy = { };
984
985	if (is_modifier(scancode))
986	return;
987
988	dummy.scancode = 0;
989	dummy.modifiers = saved_remote_modifier_state;
990	ensure_remote_modifiers(ev_time, dummy);
991	}
992
993	void
994	ensure_remote_modifiers(uint32 ev_time, key_translation tr)
995	{
996	/* If this key is a modifier, do nothing */
997	if (is_modifier(tr.scancode))
998	return;
999
1000	if (!g_numlock_sync)
1001	{
1002	/* NumLock */
1003	if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)
1004	!= MASK_HAS_BITS(remote_modifier_state, MapNumLockMask))
1005	{
1006	/* The remote modifier state is not correct */
1007	uint16 new_remote_state;
1008
1009	if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask))
1010	{
1011	DEBUG_KBD(("Remote NumLock state is incorrect, activating NumLock.\n"));
1012	new_remote_state = KBD_FLAG_NUMLOCK;
1013	remote_modifier_state = MapNumLockMask;
1014	}
1015	else
1016	{
1017	DEBUG_KBD(("Remote NumLock state is incorrect, deactivating NumLock.\n"));
1018	new_remote_state = 0;
1019	remote_modifier_state = 0;
1020	}
1021
1022	rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0, new_remote_state, 0);
1023	}
1024	}
1025
1026
1027	/* Shift. Left shift and right shift are treated as equal; either is fine. */
1028	if (MASK_HAS_BITS(tr.modifiers, MapShiftMask)
1029	!= MASK_HAS_BITS(remote_modifier_state, MapShiftMask))
1030	{
1031	/* The remote modifier state is not correct */
1032	if (MASK_HAS_BITS(tr.modifiers, MapLeftShiftMask))
1033	{
1034	/* Needs left shift. Send down. */
1035	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LSHIFT);
1036	}
1037	else if (MASK_HAS_BITS(tr.modifiers, MapRightShiftMask))
1038	{
1039	/* Needs right shift. Send down. */
1040	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RSHIFT);
1041	}
1042	else
1043	{
1044	/* Should not use this modifier. Send up for shift currently pressed. */
1045	if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask))
1046	/* Left shift is down */
1047	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT);
1048	else
1049	/* Right shift is down */
1050	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT);
1051	}
1052	}
1053
1054	/* AltGr */
1055	if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask)
1056	!= MASK_HAS_BITS(remote_modifier_state, MapAltGrMask))
1057	{
1058	/* The remote modifier state is not correct */
1059	if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask))
1060	{
1061	/* Needs this modifier. Send down. */
1062	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RALT);
1063	}
1064	else
1065	{
1066	/* Should not use this modifier. Send up. */
1067	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT);
1068	}
1069	}
1070
1071
1072	}
1073
1074
1075	unsigned int
1076	read_keyboard_state()
1077	{
1078	#ifdef RDP2VNC
1079	return 0;
1080	#else
1081	unsigned int state;
1082	Window wdummy;
1083	int dummy;
1084
1085	XQueryPointer(g_display, g_wnd, &wdummy, &wdummy, &dummy, &dummy, &dummy, &dummy, &state);
1086	return state;
1087	#endif
1088	}
1089
1090
1091	uint16
1092	ui_get_numlock_state(unsigned int state)
1093	{
1094	uint16 numlock_state = 0;
1095
1096	if (get_key_state(state, XK_Num_Lock))
1097	numlock_state = KBD_FLAG_NUMLOCK;
1098
1099	return numlock_state;
1100	}
1101
1102
1103	void
1104	reset_modifier_keys()
1105	{
1106	unsigned int state = read_keyboard_state();
1107
1108	/* reset keys */
1109	uint32 ev_time;
1110	ev_time = time(NULL);
1111
1112	if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask)
1113	&& !get_key_state(state, XK_Shift_L))
1114	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT);
1115
1116	if (MASK_HAS_BITS(remote_modifier_state, MapRightShiftMask)
1117	&& !get_key_state(state, XK_Shift_R))
1118	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT);
1119
1120	if (MASK_HAS_BITS(remote_modifier_state, MapLeftCtrlMask)
1121	&& !get_key_state(state, XK_Control_L))
1122	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL);
1123
1124	if (MASK_HAS_BITS(remote_modifier_state, MapRightCtrlMask)
1125	&& !get_key_state(state, XK_Control_R))
1126	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RCTRL);
1127
1128	if (MASK_HAS_BITS(remote_modifier_state, MapLeftAltMask) && !get_key_state(state, XK_Alt_L))
1129	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LALT);
1130
1131	if (MASK_HAS_BITS(remote_modifier_state, MapRightAltMask) &&
1132	!get_key_state(state, XK_Alt_R) && !get_key_state(state, XK_Mode_switch)
1133	&& !get_key_state(state, XK_ISO_Level3_Shift))
1134	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT);
1135
1136	reset_winkey(ev_time);
1137
1138	if (g_numlock_sync)
1139	rdp_send_input(ev_time, RDP_INPUT_SYNCHRONIZE, 0, ui_get_numlock_state(state), 0);
1140	}
1141
1142
1143	static void
1144	update_modifier_state(uint8 scancode, RD_BOOL pressed)
1145	{
1146	#ifdef WITH_DEBUG_KBD
1147	uint16 old_modifier_state;
1148
1149	old_modifier_state = remote_modifier_state;
1150	#endif
1151
1152	switch (scancode)
1153	{
1154	case SCANCODE_CHAR_LSHIFT:
1155	MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed);
1156	break;
1157	case SCANCODE_CHAR_RSHIFT:
1158	MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed);
1159	break;
1160	case SCANCODE_CHAR_LCTRL:
1161	MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed);
1162	break;
1163	case SCANCODE_CHAR_RCTRL:
1164	MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed);
1165	break;
1166	case SCANCODE_CHAR_LALT:
1167	MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed);
1168	break;
1169	case SCANCODE_CHAR_RALT:
1170	MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed);
1171	break;
1172	case SCANCODE_CHAR_LWIN:
1173	MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed);
1174	break;
1175	case SCANCODE_CHAR_RWIN:
1176	MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed);
1177	break;
1178	case SCANCODE_CHAR_NUMLOCK:
1179	/* KeyReleases for NumLocks are sent immediately. Toggle the
1180	modifier state only on Keypress */
1181	if (pressed && !g_numlock_sync)
1182	{
1183	RD_BOOL newNumLockState;
1184	newNumLockState =
1185	(MASK_HAS_BITS
1186	(remote_modifier_state, MapNumLockMask) == False);
1187	MASK_CHANGE_BIT(remote_modifier_state,
1188	MapNumLockMask, newNumLockState);
1189	}
1190	}
1191
1192	#ifdef WITH_DEBUG_KBD
1193	if (old_modifier_state != remote_modifier_state)
1194	{
1195	DEBUG_KBD(("Before updating modifier_state:0x%x, pressed=0x%x\n",
1196	old_modifier_state, pressed));
1197	DEBUG_KBD(("After updating modifier_state:0x%x\n", remote_modifier_state));
1198	}
1199	#endif
1200
1201	}
1202
1203	/* Send keyboard input */
1204	void
1205	rdp_send_scancode(uint32 time, uint16 flags, uint8 scancode)
1206	{
1207	update_modifier_state(scancode, !(flags & RDP_KEYRELEASE));
1208
1209	if (scancode & SCANCODE_EXTENDED)
1210	{
1211	DEBUG_KBD(("Sending extended scancode=0x%x, flags=0x%x\n",
1212	scancode & ~SCANCODE_EXTENDED, flags));
1213	rdp_send_input(time, RDP_INPUT_SCANCODE, flags \| KBD_FLAG_EXT,
1214	scancode & ~SCANCODE_EXTENDED, 0);
1215	}
1216	else
1217	{
1218	DEBUG_KBD(("Sending scancode=0x%x, flags=0x%x\n", scancode, flags));
1219	rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0);
1220	}
1221	}

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source: vbox/trunk/src/VBox/RDP/client-1.8.3/xkeymap.c@ 69308

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