trunk/rdesktop/xkeymap.c

/*
   rdesktop: A Remote Desktop Protocol client.
   User interface services - X keyboard mapping
   Copyright (C) Matthew Chapman 1999-2001
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include "rdesktop.h"
#include "scancodes.h"

#define KEYMAP_SIZE 4096
#define KEYMAP_MASK (KEYMAP_SIZE - 1)
#define KEYMAP_MAX_LINE_LENGTH 80

extern Display *display;
extern char keymapname[16];
extern int keylayout;
extern BOOL enable_compose;

static key_translation keymap[KEYMAP_SIZE];
static int min_keycode;
static uint16 remote_modifier_state = 0;

static void
add_to_keymap(char *keyname, uint8 scancode, uint16 modifiers, char *mapname)
{
        KeySym keysym;

        keysym = XStringToKeysym(keyname);
        if (keysym == NoSymbol)
        {
                error("Bad keysym %s in keymap %s\n", keyname, mapname);
                return;
        }

        DEBUG_KBD("Adding translation, keysym=0x%x, scancode=0x%x, "
                  "modifiers=0x%x\n", (unsigned int) keysym, scancode, modifiers);

        keymap[keysym & KEYMAP_MASK].scancode = scancode;
        keymap[keysym & KEYMAP_MASK].modifiers = modifiers;

        return;
}


static BOOL
xkeymap_read(char *mapname)
{
        FILE *fp;
        char line[KEYMAP_MAX_LINE_LENGTH], path[PATH_MAX];
        unsigned int line_num = 0;
        unsigned int line_length = 0;
        char *keyname, *p;
        char *line_rest;
        uint8 scancode;
        uint16 modifiers;


        strcpy(path, KEYMAP_PATH);
        strncat(path, mapname, sizeof(path) - sizeof(KEYMAP_PATH));

        fp = fopen(path, "r");
        if (fp == NULL)
        {
                error("Failed to open keymap %s\n", path);
                return False;
        }

        /* FIXME: More tolerant on white space */
        while (fgets(line, sizeof(line), fp) != NULL)
        {
                line_num++;

                /* Replace the \n with \0 */
                p = strchr(line, '\n');
                if (p != NULL)
                        *p = 0;

                line_length = strlen(line);

                /* Completely empty line */
                if (strspn(line, " \t\n\r\f\v") == line_length)
                {
                        continue;
                }

                /* Include */
                if (strncmp(line, "include ", 8) == 0)
                {
                        if (!xkeymap_read(line + 8))
                                return False;
                        continue;
                }

                /* map */
                if (strncmp(line, "map ", 4) == 0)
                {
                        keylayout = strtol(line + 4, NULL, 16);
                        DEBUG_KBD("Keylayout 0x%x\n", keylayout);
                        continue;
                }

                /* compose */
                if (strncmp(line, "enable_compose", 15) == 0)
                {
                        DEBUG_KBD("Enabling compose handling\n");
                        enable_compose = True;
                        continue;
                }

                /* Comment */
                if (line[0] == '#')
                {
                        continue;
                }

                /* Normal line */
                keyname = line;
                p = strchr(line, ' ');
                if (p == NULL)
                {
                        error("Bad line %d in keymap %s\n", line_num, mapname);
                        continue;
                }
                else
                {
                        *p = 0;
                }

                /* scancode */
                p++;
                scancode = strtol(p, &line_rest, 16);

                /* flags */
                /* FIXME: Should allow case-insensitive flag names. 
                   Fix by using lex+yacc... */
                modifiers = 0;
                if (strstr(line_rest, "altgr"))
                {
                        MASK_ADD_BITS(modifiers, MapAltGrMask);
                }

                if (strstr(line_rest, "shift"))
                {
                        MASK_ADD_BITS(modifiers, MapLeftShiftMask);
                }

                if (strstr(line_rest, "numlock"))
                {
                        MASK_ADD_BITS(modifiers, MapNumLockMask);
                }

                if (strstr(line_rest, "localstate"))
                {
                        MASK_ADD_BITS(modifiers, MapLocalStateMask);
                }

                add_to_keymap(keyname, scancode, modifiers, mapname);

                if (strstr(line_rest, "addupper"))
                {
                        /* Automatically add uppercase key, with same modifiers 
                           plus shift */
                        for (p = keyname; *p; p++)
                                *p = toupper(*p);
                        MASK_ADD_BITS(modifiers, MapLeftShiftMask);
                        add_to_keymap(keyname, scancode, modifiers, mapname);
                }
        }

        fclose(fp);
        return True;
}


/* Before connecting and creating UI */
void
xkeymap_init1(void)
{
        int i;

        /* Zeroing keymap */
        for (i = 0; i < KEYMAP_SIZE; i++)
        {
                keymap[i].scancode = 0;
                keymap[i].modifiers = 0;
        }

        if (strcmp(keymapname, "none"))
        {
                xkeymap_read(keymapname);
        }

}

/* After connecting and creating UI */
void
xkeymap_init2(void)
{
        unsigned int max_keycode;
        XDisplayKeycodes(display, &min_keycode, (int *) &max_keycode);
}


key_translation
xkeymap_translate_key(KeySym keysym, unsigned int keycode, unsigned int state)
{
        key_translation tr = { 0, 0 };

        tr = keymap[keysym & KEYMAP_MASK];

        if (tr.modifiers & MapLocalStateMask)
        {
                /* The modifiers to send for this key should be obtained
                   from the local state. Currently, only shift is implemented. */
                if (state & ShiftMask)
                {
                        tr.modifiers = MapLeftShiftMask;
                }
        }

        if (tr.scancode != 0)
        {
                DEBUG_KBD
                        ("Found key translation, scancode=0x%x, modifiers=0x%x\n",
                         tr.scancode, tr.modifiers);
                return tr;
        }

        printf("No translation for (keysym 0x%lx, %s)\n", keysym, get_ksname(keysym));

        /* not in keymap, try to interpret the raw scancode */
        if ((keycode >= min_keycode) && (keycode <= 0x60))
        {
                tr.scancode = keycode - min_keycode;
                printf("Sending guessed scancode 0x%x\n", tr.scancode);
        }
        else
        {
                printf("No good guess for keycode 0x%x found\n", keycode);
        }

        return tr;
}

uint16
xkeymap_translate_button(unsigned int button)
{
        switch (button)
        {
                case Button1:   /* left */
                        return MOUSE_FLAG_BUTTON1;
                case Button2:   /* middle */
                        return MOUSE_FLAG_BUTTON3;
                case Button3:   /* right */
                        return MOUSE_FLAG_BUTTON2;
                case Button4:   /* wheel up */
                        return MOUSE_FLAG_BUTTON4;
                case Button5:   /* wheel down */
                        return MOUSE_FLAG_BUTTON5;
        }

        return 0;
}

char *
get_ksname(KeySym keysym)
{
        char *ksname = NULL;

        if (keysym == NoSymbol)
                ksname = "NoSymbol";
        else if (!(ksname = XKeysymToString(keysym)))
                ksname = "(no name)";

        return ksname;
}

BOOL
inhibit_key(KeySym keysym)
{
        switch (keysym)
        {
                case XK_Caps_Lock:
                        return True;
                        break;
                case XK_Multi_key:
                        return True;
                        break;
                default:
                        break;
        }
        return False;
}

void
ensure_remote_modifiers(uint32 ev_time, key_translation tr)
{
        /* If this key is a modifier, do nothing */
        switch (tr.scancode)
        {
                case SCANCODE_CHAR_LSHIFT:
                case SCANCODE_CHAR_RSHIFT:
                case SCANCODE_CHAR_LCTRL:
                case SCANCODE_CHAR_RCTRL:
                case SCANCODE_CHAR_LALT:
                case SCANCODE_CHAR_RALT:
                case SCANCODE_CHAR_LWIN:
                case SCANCODE_CHAR_RWIN:
                case SCANCODE_CHAR_NUMLOCK:
                        return;
                default:
                        break;
        }

        /* Shift */
        if (MASK_HAS_BITS(tr.modifiers, MapShiftMask)
            != MASK_HAS_BITS(remote_modifier_state, MapShiftMask))
        {
                /* The remote modifier state is not correct */
                if (MASK_HAS_BITS(tr.modifiers, MapShiftMask))
                {
                        /* Needs this modifier. Send down. */
                        rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LSHIFT);
                }
                else
                {
                        /* Should not use this modifier. Send up. */
                        rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT);
                }
        }

        /* AltGr */
        if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask)
            != MASK_HAS_BITS(remote_modifier_state, MapAltGrMask))
        {
                /* The remote modifier state is not correct */
                if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask))
                {
                        /* Needs this modifier. Send down. */
                        rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RALT);
                }
                else
                {
                        /* Should not use this modifier. Send up. */
                        rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT);
                }
        }

        /* NumLock */
        if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)
            != MASK_HAS_BITS(remote_modifier_state, MapNumLockMask))
        {
                /* The remote modifier state is not correct */
                DEBUG_KBD("Remote NumLock state is incorrect. Toggling\n");
                if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask))
                {
                        /* Needs this modifier. Toggle */
                        rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_NUMLOCK);
                        rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_NUMLOCK);
                }
                else
                {
                        /* Should not use this modifier. Toggle */
                        rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_NUMLOCK);
                        rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_NUMLOCK);
                }
        }

}


static void
update_modifier_state(uint16 modifiers, BOOL pressed)
{

        DEBUG_KBD("Before updating modifier_state:0x%x, pressed=0x%x\n",
                  remote_modifier_state, pressed);
        switch (modifiers)
        {
                case SCANCODE_CHAR_LSHIFT:
                        MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed);
                        break;
                case SCANCODE_CHAR_RSHIFT:
                        MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed);
                        break;
                case SCANCODE_CHAR_LCTRL:
                        MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed);
                        break;
                case SCANCODE_CHAR_RCTRL:
                        MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed);
                        break;
                case SCANCODE_CHAR_LALT:
                        MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed);
                        break;
                case SCANCODE_CHAR_RALT:
                        MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed);
                        break;
                case SCANCODE_CHAR_LWIN:
                        MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed);
                        break;
                case SCANCODE_CHAR_RWIN:
                        MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed);
                        break;
                case SCANCODE_CHAR_NUMLOCK:
                        /* KeyReleases for NumLocks are sent immediately. Toggle the
                           modifier state only on Keypress */
                        if (pressed)
                        {
                                BOOL newNumLockState;
                                newNumLockState =
                                        (MASK_HAS_BITS
                                         (remote_modifier_state, MapNumLockMask) == False);
                                MASK_CHANGE_BIT(remote_modifier_state,
                                                MapNumLockMask, newNumLockState);
                        }
                        break;
        }
        DEBUG_KBD("After updating modifier_state:0x%x\n", remote_modifier_state);

}

/* Send keyboard input */
void
rdp_send_scancode(uint32 time, uint16 flags, uint16 scancode)
{
        update_modifier_state(scancode, !(flags & RDP_KEYRELEASE));

        if (scancode & SCANCODE_EXTENDED)
        {
                DEBUG_KBD("Sending extended scancode=0x%x, flags=0x%x\n",
                          scancode & ~SCANCODE_EXTENDED, flags);
                rdp_send_input(time, RDP_INPUT_SCANCODE, flags | KBD_FLAG_EXT,
                               scancode & ~SCANCODE_EXTENDED, 0);
        }
        else
        {
                DEBUG_KBD("Sending scancode=0x%x, flags=0x%x\n", scancode, flags);
                rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0);
        }
}
1	matthewc	38	/*
2			rdesktop: A Remote Desktop Protocol client.
3			User interface services - X keyboard mapping
4			Copyright (C) Matthew Chapman 1999-2001
5
6			This program is free software; you can redistribute it and/or modify
7			it under the terms of the GNU General Public License as published by
8			the Free Software Foundation; either version 2 of the License, or
9			(at your option) any later version.
10
11			This program is distributed in the hope that it will be useful,
12			but WITHOUT ANY WARRANTY; without even the implied warranty of
13			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			GNU General Public License for more details.
15
16			You should have received a copy of the GNU General Public License
17			along with this program; if not, write to the Free Software
18			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19			*/
20
21			#include <X11/Xlib.h>
22			#include <X11/keysym.h>
23			#include <stdio.h>
24			#include <stdlib.h>
25			#include <string.h>
26	astrand	66	#include <ctype.h>
27	matthewc	39	#include <limits.h>
28	matthewc	38	#include "rdesktop.h"
29	astrand	66	#include "scancodes.h"
30	matthewc	38
31			#define KEYMAP_SIZE 4096
32			#define KEYMAP_MASK (KEYMAP_SIZE - 1)
33	astrand	66	#define KEYMAP_MAX_LINE_LENGTH 80
34	matthewc	38
35	matthewc	50	extern Display *display;
36	matthewc	38	extern char keymapname[16];
37			extern int keylayout;
38	astrand	70	extern BOOL enable_compose;
39	matthewc	38
40	astrand	66	static key_translation keymap[KEYMAP_SIZE];
41	astrand	73	static int min_keycode;
42	astrand	66	static uint16 remote_modifier_state = 0;
43	matthewc	38
44	astrand	66	static void
45			add_to_keymap(char keyname, uint8 scancode, uint16 modifiers, char mapname)
46			{
47			KeySym keysym;
48
49			keysym = XStringToKeysym(keyname);
50			if (keysym == NoSymbol)
51			{
52			error("Bad keysym %s in keymap %s\n", keyname, mapname);
53			return;
54			}
55
56			DEBUG_KBD("Adding translation, keysym=0x%x, scancode=0x%x, "
57	astrand	82	"modifiers=0x%x\n", (unsigned int) keysym, scancode, modifiers);
58	astrand	66
59			keymap[keysym & KEYMAP_MASK].scancode = scancode;
60			keymap[keysym & KEYMAP_MASK].modifiers = modifiers;
61
62			return;
63			}
64
65
66	astrand	64	static BOOL
67			xkeymap_read(char *mapname)
68	matthewc	38	{
69			FILE *fp;
70	astrand	66	char line[KEYMAP_MAX_LINE_LENGTH], path[PATH_MAX];
71			unsigned int line_num = 0;
72			unsigned int line_length = 0;
73	matthewc	38	char keyname, p;
74	astrand	66	char *line_rest;
75			uint8 scancode;
76			uint16 modifiers;
77	matthewc	38
78	astrand	66
79	matthewc	38	strcpy(path, KEYMAP_PATH);
80			strncat(path, mapname, sizeof(path) - sizeof(KEYMAP_PATH));
81
82			fp = fopen(path, "r");
83			if (fp == NULL)
84			{
85			error("Failed to open keymap %s\n", path);
86			return False;
87			}
88
89	astrand	66	/* FIXME: More tolerant on white space */
90	matthewc	38	while (fgets(line, sizeof(line), fp) != NULL)
91			{
92	astrand	66	line_num++;
93
94			/* Replace the \n with \0 */
95	matthewc	38	p = strchr(line, '\n');
96			if (p != NULL)
97			*p = 0;
98
99	astrand	66	line_length = strlen(line);
100
101			/* Completely empty line */
102			if (strspn(line, " \t\n\r\f\v") == line_length)
103	matthewc	38	{
104	astrand	66	continue;
105			}
106	matthewc	38
107	astrand	66	/* Include */
108			if (strncmp(line, "include ", 8) == 0)
109	matthewc	38	{
110	astrand	64	if (!xkeymap_read(line + 8))
111	matthewc	38	return False;
112	astrand	66	continue;
113	matthewc	38	}
114	astrand	66
115			/* map */
116			if (strncmp(line, "map ", 4) == 0)
117	matthewc	38	{
118	astrand	64	keylayout = strtol(line + 4, NULL, 16);
119	astrand	66	DEBUG_KBD("Keylayout 0x%x\n", keylayout);
120			continue;
121	matthewc	38	}
122	astrand	66
123	astrand	70	/* compose */
124			if (strncmp(line, "enable_compose", 15) == 0)
125			{
126			DEBUG_KBD("Enabling compose handling\n");
127			enable_compose = True;
128			continue;
129			}
130
131	astrand	66	/* Comment */
132			if (line[0] == '#')
133	matthewc	38	{
134	astrand	66	continue;
135	matthewc	38	}
136	astrand	66
137			/* Normal line */
138			keyname = line;
139			p = strchr(line, ' ');
140			if (p == NULL)
141			{
142	astrand	82	error("Bad line %d in keymap %s\n", line_num, mapname);
143	astrand	66	continue;
144			}
145			else
146			{
147			*p = 0;
148			}
149
150			/* scancode */
151			p++;
152			scancode = strtol(p, &line_rest, 16);
153
154			/* flags */
155			/* FIXME: Should allow case-insensitive flag names.
156			Fix by using lex+yacc... */
157			modifiers = 0;
158			if (strstr(line_rest, "altgr"))
159			{
160			MASK_ADD_BITS(modifiers, MapAltGrMask);
161			}
162
163			if (strstr(line_rest, "shift"))
164			{
165			MASK_ADD_BITS(modifiers, MapLeftShiftMask);
166			}
167
168			if (strstr(line_rest, "numlock"))
169			{
170			MASK_ADD_BITS(modifiers, MapNumLockMask);
171			}
172
173	astrand	69	if (strstr(line_rest, "localstate"))
174			{
175			MASK_ADD_BITS(modifiers, MapLocalStateMask);
176			}
177
178	astrand	66	add_to_keymap(keyname, scancode, modifiers, mapname);
179
180			if (strstr(line_rest, "addupper"))
181			{
182			/* Automatically add uppercase key, with same modifiers
183			plus shift */
184			for (p = keyname; *p; p++)
185			p = toupper(p);
186			MASK_ADD_BITS(modifiers, MapLeftShiftMask);
187			add_to_keymap(keyname, scancode, modifiers, mapname);
188			}
189	matthewc	38	}
190
191			fclose(fp);
192			return True;
193			}
194
195	astrand	66
196			/* Before connecting and creating UI */
197	astrand	64	void
198	astrand	66	xkeymap_init1(void)
199	matthewc	38	{
200	astrand	66	int i;
201	matthewc	38
202	astrand	66	/* Zeroing keymap */
203			for (i = 0; i < KEYMAP_SIZE; i++)
204			{
205			keymap[i].scancode = 0;
206			keymap[i].modifiers = 0;
207			}
208	matthewc	38
209			if (strcmp(keymapname, "none"))
210	astrand	66	{
211	matthewc	38	xkeymap_read(keymapname);
212	astrand	66	}
213
214	matthewc	38	}
215
216	astrand	66	/* After connecting and creating UI */
217			void
218			xkeymap_init2(void)
219	matthewc	38	{
220	astrand	66	unsigned int max_keycode;
221	astrand	77	XDisplayKeycodes(display, &min_keycode, (int *) &max_keycode);
222	astrand	66	}
223	matthewc	38
224	astrand	66
225			key_translation
226	astrand	69	xkeymap_translate_key(KeySym keysym, unsigned int keycode, unsigned int state)
227	astrand	66	{
228			key_translation tr = { 0, 0 };
229
230			tr = keymap[keysym & KEYMAP_MASK];
231
232	astrand	69	if (tr.modifiers & MapLocalStateMask)
233			{
234			/* The modifiers to send for this key should be obtained
235			from the local state. Currently, only shift is implemented. */
236			if (state & ShiftMask)
237			{
238			tr.modifiers = MapLeftShiftMask;
239			}
240			}
241
242	astrand	66	if (tr.scancode != 0)
243	matthewc	50	{
244	astrand	66	DEBUG_KBD
245			("Found key translation, scancode=0x%x, modifiers=0x%x\n",
246			tr.scancode, tr.modifiers);
247			return tr;
248	matthewc	50	}
249
250	astrand	82	printf("No translation for (keysym 0x%lx, %s)\n", keysym, get_ksname(keysym));
251	astrand	66
252	matthewc	38	/* not in keymap, try to interpret the raw scancode */
253			if ((keycode >= min_keycode) && (keycode <= 0x60))
254			{
255	astrand	66	tr.scancode = keycode - min_keycode;
256			printf("Sending guessed scancode 0x%x\n", tr.scancode);
257	matthewc	38	}
258	astrand	66	else
259			{
260			printf("No good guess for keycode 0x%x found\n", keycode);
261			}
262	matthewc	38
263	astrand	66	return tr;
264	matthewc	38	}
265
266	astrand	64	uint16
267			xkeymap_translate_button(unsigned int button)
268	matthewc	38	{
269			switch (button)
270			{
271	astrand	64	case Button1: /* left */
272	matthewc	38	return MOUSE_FLAG_BUTTON1;
273	astrand	64	case Button2: /* middle */
274	matthewc	38	return MOUSE_FLAG_BUTTON3;
275	astrand	64	case Button3: /* right */
276	matthewc	38	return MOUSE_FLAG_BUTTON2;
277	jsorg71	67	case Button4: /* wheel up */
278			return MOUSE_FLAG_BUTTON4;
279			case Button5: /* wheel down */
280			return MOUSE_FLAG_BUTTON5;
281	matthewc	38	}
282
283			return 0;
284			}
285	astrand	66
286			char *
287			get_ksname(KeySym keysym)
288			{
289			char *ksname = NULL;
290
291			if (keysym == NoSymbol)
292			ksname = "NoSymbol";
293			else if (!(ksname = XKeysymToString(keysym)))
294			ksname = "(no name)";
295
296			return ksname;
297			}
298
299			BOOL
300			inhibit_key(KeySym keysym)
301			{
302			switch (keysym)
303			{
304			case XK_Caps_Lock:
305			return True;
306			break;
307			case XK_Multi_key:
308			return True;
309			break;
310			default:
311			break;
312			}
313			return False;
314			}
315
316			void
317			ensure_remote_modifiers(uint32 ev_time, key_translation tr)
318			{
319			/* If this key is a modifier, do nothing */
320			switch (tr.scancode)
321			{
322			case SCANCODE_CHAR_LSHIFT:
323			case SCANCODE_CHAR_RSHIFT:
324			case SCANCODE_CHAR_LCTRL:
325			case SCANCODE_CHAR_RCTRL:
326			case SCANCODE_CHAR_LALT:
327			case SCANCODE_CHAR_RALT:
328			case SCANCODE_CHAR_LWIN:
329			case SCANCODE_CHAR_RWIN:
330			case SCANCODE_CHAR_NUMLOCK:
331			return;
332			default:
333			break;
334			}
335
336			/* Shift */
337			if (MASK_HAS_BITS(tr.modifiers, MapShiftMask)
338			!= MASK_HAS_BITS(remote_modifier_state, MapShiftMask))
339			{
340			/* The remote modifier state is not correct */
341			if (MASK_HAS_BITS(tr.modifiers, MapShiftMask))
342			{
343			/* Needs this modifier. Send down. */
344	astrand	82	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LSHIFT);
345	astrand	66	}
346			else
347			{
348			/* Should not use this modifier. Send up. */
349	astrand	82	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT);
350	astrand	66	}
351			}
352
353			/* AltGr */
354			if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask)
355			!= MASK_HAS_BITS(remote_modifier_state, MapAltGrMask))
356			{
357			/* The remote modifier state is not correct */
358			if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask))
359			{
360			/* Needs this modifier. Send down. */
361	astrand	82	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RALT);
362	astrand	66	}
363			else
364			{
365			/* Should not use this modifier. Send up. */
366	astrand	82	rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT);
367	astrand	66	}
368			}
369
370			/* NumLock */
371			if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)
372			!= MASK_HAS_BITS(remote_modifier_state, MapNumLockMask))
373			{
374			/* The remote modifier state is not correct */
375			DEBUG_KBD("Remote NumLock state is incorrect. Toggling\n");
376			if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask))
377			{
378			/* Needs this modifier. Toggle */
379	astrand	82	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_NUMLOCK);
380			rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_NUMLOCK);
381	astrand	66	}
382			else
383			{
384			/* Should not use this modifier. Toggle */
385	astrand	82	rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_NUMLOCK);
386			rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_NUMLOCK);
387	astrand	66	}
388			}
389
390			}
391
392
393			static void
394			update_modifier_state(uint16 modifiers, BOOL pressed)
395			{
396
397			DEBUG_KBD("Before updating modifier_state:0x%x, pressed=0x%x\n",
398			remote_modifier_state, pressed);
399			switch (modifiers)
400			{
401			case SCANCODE_CHAR_LSHIFT:
402	astrand	82	MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed);
403	astrand	66	break;
404			case SCANCODE_CHAR_RSHIFT:
405	astrand	82	MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed);
406	astrand	66	break;
407			case SCANCODE_CHAR_LCTRL:
408	astrand	82	MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed);
409	astrand	66	break;
410			case SCANCODE_CHAR_RCTRL:
411	astrand	82	MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed);
412	astrand	66	break;
413			case SCANCODE_CHAR_LALT:
414	astrand	82	MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed);
415	astrand	66	break;
416			case SCANCODE_CHAR_RALT:
417	astrand	82	MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed);
418	astrand	66	break;
419			case SCANCODE_CHAR_LWIN:
420	astrand	82	MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed);
421	astrand	66	break;
422			case SCANCODE_CHAR_RWIN:
423	astrand	82	MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed);
424	astrand	66	break;
425			case SCANCODE_CHAR_NUMLOCK:
426			/* KeyReleases for NumLocks are sent immediately. Toggle the
427			modifier state only on Keypress */
428			if (pressed)
429			{
430			BOOL newNumLockState;
431			newNumLockState =
432			(MASK_HAS_BITS
433	astrand	82	(remote_modifier_state, MapNumLockMask) == False);
434	astrand	66	MASK_CHANGE_BIT(remote_modifier_state,
435	astrand	82	MapNumLockMask, newNumLockState);
436	astrand	66	}
437			break;
438			}
439	astrand	82	DEBUG_KBD("After updating modifier_state:0x%x\n", remote_modifier_state);
440	astrand	66
441			}
442
443			/* Send keyboard input */
444			void
445			rdp_send_scancode(uint32 time, uint16 flags, uint16 scancode)
446			{
447			update_modifier_state(scancode, !(flags & RDP_KEYRELEASE));
448
449			if (scancode & SCANCODE_EXTENDED)
450			{
451			DEBUG_KBD("Sending extended scancode=0x%x, flags=0x%x\n",
452			scancode & ~SCANCODE_EXTENDED, flags);
453			rdp_send_input(time, RDP_INPUT_SCANCODE, flags \| KBD_FLAG_EXT,
454			scancode & ~SCANCODE_EXTENDED, 0);
455			}
456			else
457			{
458	astrand	82	DEBUG_KBD("Sending scancode=0x%x, flags=0x%x\n", scancode, flags);
459	astrand	66	rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0);
460			}
461			}