| 1 |
/* |
| 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. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
GNU General Public License for more details. |
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|
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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 |
*/ |
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|
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#include <X11/Xlib.h> |
| 22 |
#include <X11/keysym.h> |
| 23 |
#include <stdio.h> |
| 24 |
#include <stdlib.h> |
| 25 |
#include <string.h> |
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#include <ctype.h> |
| 27 |
#include <limits.h> |
| 28 |
#include "rdesktop.h" |
| 29 |
#include "scancodes.h" |
| 30 |
|
| 31 |
#define KEYMAP_SIZE 4096 |
| 32 |
#define KEYMAP_MASK (KEYMAP_SIZE - 1) |
| 33 |
#define KEYMAP_MAX_LINE_LENGTH 80 |
| 34 |
|
| 35 |
extern Display *display; |
| 36 |
extern char keymapname[16]; |
| 37 |
extern int keylayout; |
| 38 |
extern BOOL enable_compose; |
| 39 |
|
| 40 |
static key_translation keymap[KEYMAP_SIZE]; |
| 41 |
static int min_keycode; |
| 42 |
static uint16 remote_modifier_state = 0; |
| 43 |
|
| 44 |
static void update_modifier_state(uint16 modifiers, BOOL pressed); |
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|
| 46 |
static void |
| 47 |
add_to_keymap(char *keyname, uint8 scancode, uint16 modifiers, char *mapname) |
| 48 |
{ |
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KeySym keysym; |
| 50 |
|
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keysym = XStringToKeysym(keyname); |
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if (keysym == NoSymbol) |
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{ |
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error("Bad keysym %s in keymap %s\n", keyname, mapname); |
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return; |
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} |
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|
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DEBUG_KBD(("Adding translation, keysym=0x%x, scancode=0x%x, " |
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"modifiers=0x%x\n", (unsigned int) keysym, scancode, modifiers)); |
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|
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keymap[keysym & KEYMAP_MASK].scancode = scancode; |
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keymap[keysym & KEYMAP_MASK].modifiers = modifiers; |
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|
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return; |
| 65 |
} |
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|
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|
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static BOOL |
| 69 |
xkeymap_read(char *mapname) |
| 70 |
{ |
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FILE *fp; |
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char line[KEYMAP_MAX_LINE_LENGTH], path[PATH_MAX]; |
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unsigned int line_num = 0; |
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unsigned int line_length = 0; |
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char *keyname, *p; |
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char *line_rest; |
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uint8 scancode; |
| 78 |
uint16 modifiers; |
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|
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|
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strcpy(path, KEYMAP_PATH); |
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strncat(path, mapname, sizeof(path) - sizeof(KEYMAP_PATH)); |
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|
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fp = fopen(path, "r"); |
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if (fp == NULL) |
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{ |
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error("Failed to open keymap %s\n", path); |
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return False; |
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} |
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|
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/* FIXME: More tolerant on white space */ |
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while (fgets(line, sizeof(line), fp) != NULL) |
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{ |
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line_num++; |
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|
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/* Replace the \n with \0 */ |
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p = strchr(line, '\n'); |
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if (p != NULL) |
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*p = 0; |
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|
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line_length = strlen(line); |
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|
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/* Completely empty line */ |
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if (strspn(line, " \t\n\r\f\v") == line_length) |
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{ |
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continue; |
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} |
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|
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/* Include */ |
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if (strncmp(line, "include ", 8) == 0) |
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{ |
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if (!xkeymap_read(line + 8)) |
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return False; |
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continue; |
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} |
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|
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/* map */ |
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if (strncmp(line, "map ", 4) == 0) |
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{ |
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keylayout = strtol(line + 4, NULL, 16); |
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DEBUG_KBD(("Keylayout 0x%x\n", keylayout)); |
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continue; |
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} |
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|
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/* compose */ |
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if (strncmp(line, "enable_compose", 15) == 0) |
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{ |
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DEBUG_KBD(("Enabling compose handling\n")); |
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enable_compose = True; |
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continue; |
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} |
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|
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/* Comment */ |
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if (line[0] == '#') |
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{ |
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continue; |
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} |
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|
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/* Normal line */ |
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keyname = line; |
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p = strchr(line, ' '); |
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if (p == NULL) |
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{ |
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error("Bad line %d in keymap %s\n", line_num, mapname); |
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continue; |
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} |
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else |
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{ |
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*p = 0; |
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} |
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|
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/* scancode */ |
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p++; |
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scancode = strtol(p, &line_rest, 16); |
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|
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/* flags */ |
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/* FIXME: Should allow case-insensitive flag names. |
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Fix by using lex+yacc... */ |
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modifiers = 0; |
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if (strstr(line_rest, "altgr")) |
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{ |
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MASK_ADD_BITS(modifiers, MapAltGrMask); |
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} |
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|
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if (strstr(line_rest, "shift")) |
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{ |
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MASK_ADD_BITS(modifiers, MapLeftShiftMask); |
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} |
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|
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if (strstr(line_rest, "numlock")) |
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{ |
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MASK_ADD_BITS(modifiers, MapNumLockMask); |
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} |
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|
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if (strstr(line_rest, "localstate")) |
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{ |
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MASK_ADD_BITS(modifiers, MapLocalStateMask); |
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} |
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|
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if (strstr(line_rest, "inhibit")) |
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{ |
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MASK_ADD_BITS(modifiers, MapInhibitMask); |
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} |
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|
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add_to_keymap(keyname, scancode, modifiers, mapname); |
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|
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if (strstr(line_rest, "addupper")) |
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{ |
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/* Automatically add uppercase key, with same modifiers |
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plus shift */ |
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for (p = keyname; *p; p++) |
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*p = toupper(*p); |
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MASK_ADD_BITS(modifiers, MapLeftShiftMask); |
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add_to_keymap(keyname, scancode, modifiers, mapname); |
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} |
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} |
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|
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fclose(fp); |
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return True; |
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} |
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|
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|
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/* Before connecting and creating UI */ |
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void |
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xkeymap_init(void) |
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{ |
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unsigned int max_keycode; |
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int i; |
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|
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if (strcmp(keymapname, "none")) |
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xkeymap_read(keymapname); |
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|
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XDisplayKeycodes(display, &min_keycode, (int *) &max_keycode); |
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} |
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|
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/* Handles, for example, multi-scancode keypresses (which is not |
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possible via keymap-files) */ |
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BOOL |
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handle_special_keys(KeySym keysym, uint32 ev_time, BOOL pressed) |
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{ |
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switch (keysym) |
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{ |
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case XK_Break: /* toggle full screen */ |
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if (pressed && (get_key_state(XK_Alt_L) || get_key_state(XK_Alt_R))) |
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{ |
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toggle_fullscreen(); |
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return True; |
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} |
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break; |
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|
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case XK_Meta_L: /* Windows keys */ |
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case XK_Super_L: |
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case XK_Hyper_L: |
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case XK_Meta_R: |
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case XK_Super_R: |
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case XK_Hyper_R: |
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if (pressed) |
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{ |
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rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LCTRL); |
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rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_ESC); |
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} |
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else |
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{ |
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rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_ESC); |
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rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL); |
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} |
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return True; |
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break; |
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} |
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return False; |
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} |
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|
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|
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key_translation |
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xkeymap_translate_key(KeySym keysym, unsigned int keycode, unsigned int state) |
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{ |
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key_translation tr = { 0, 0 }; |
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|
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tr = keymap[keysym & KEYMAP_MASK]; |
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|
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if (tr.modifiers & MapInhibitMask) |
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{ |
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DEBUG_KBD(("Inhibiting key\n")); |
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tr.scancode = 0; |
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return tr; |
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} |
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|
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if (tr.modifiers & MapLocalStateMask) |
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{ |
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/* The modifiers to send for this key should be obtained |
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from the local state. Currently, only shift is implemented. */ |
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if (state & ShiftMask) |
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{ |
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tr.modifiers = MapLeftShiftMask; |
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} |
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} |
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|
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if (tr.scancode != 0) |
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{ |
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DEBUG_KBD |
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(("Found key translation, scancode=0x%x, modifiers=0x%x\n", |
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tr.scancode, tr.modifiers)); |
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return tr; |
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} |
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|
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fprintf(stderr, "No translation for (keysym 0x%lx, %s)\n", keysym, get_ksname(keysym)); |
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|
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/* not in keymap, try to interpret the raw scancode */ |
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if ((keycode >= min_keycode) && (keycode <= 0x60)) |
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{ |
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tr.scancode = keycode - min_keycode; |
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fprintf(stderr, "Sending guessed scancode 0x%x\n", tr.scancode); |
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} |
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else |
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{ |
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fprintf(stderr, "No good guess for keycode 0x%x found\n", keycode); |
| 297 |
} |
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|
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return tr; |
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} |
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|
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uint16 |
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xkeymap_translate_button(unsigned int button) |
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{ |
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switch (button) |
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{ |
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case Button1: /* left */ |
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return MOUSE_FLAG_BUTTON1; |
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case Button2: /* middle */ |
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return MOUSE_FLAG_BUTTON3; |
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case Button3: /* right */ |
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return MOUSE_FLAG_BUTTON2; |
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case Button4: /* wheel up */ |
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return MOUSE_FLAG_BUTTON4; |
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case Button5: /* wheel down */ |
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return MOUSE_FLAG_BUTTON5; |
| 317 |
} |
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|
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return 0; |
| 320 |
} |
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|
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char * |
| 323 |
get_ksname(KeySym keysym) |
| 324 |
{ |
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char *ksname = NULL; |
| 326 |
|
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if (keysym == NoSymbol) |
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ksname = "NoSymbol"; |
| 329 |
else if (!(ksname = XKeysymToString(keysym))) |
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ksname = "(no name)"; |
| 331 |
|
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return ksname; |
| 333 |
} |
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|
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|
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void |
| 337 |
ensure_remote_modifiers(uint32 ev_time, key_translation tr) |
| 338 |
{ |
| 339 |
/* If this key is a modifier, do nothing */ |
| 340 |
switch (tr.scancode) |
| 341 |
{ |
| 342 |
case SCANCODE_CHAR_LSHIFT: |
| 343 |
case SCANCODE_CHAR_RSHIFT: |
| 344 |
case SCANCODE_CHAR_LCTRL: |
| 345 |
case SCANCODE_CHAR_RCTRL: |
| 346 |
case SCANCODE_CHAR_LALT: |
| 347 |
case SCANCODE_CHAR_RALT: |
| 348 |
case SCANCODE_CHAR_LWIN: |
| 349 |
case SCANCODE_CHAR_RWIN: |
| 350 |
case SCANCODE_CHAR_NUMLOCK: |
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return; |
| 352 |
default: |
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break; |
| 354 |
} |
| 355 |
|
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/* Shift */ |
| 357 |
if (MASK_HAS_BITS(tr.modifiers, MapShiftMask) |
| 358 |
!= MASK_HAS_BITS(remote_modifier_state, MapShiftMask)) |
| 359 |
{ |
| 360 |
/* The remote modifier state is not correct */ |
| 361 |
if (MASK_HAS_BITS(tr.modifiers, MapShiftMask)) |
| 362 |
{ |
| 363 |
/* Needs this modifier. Send down. */ |
| 364 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LSHIFT); |
| 365 |
} |
| 366 |
else |
| 367 |
{ |
| 368 |
/* Should not use this modifier. Send up. */ |
| 369 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT); |
| 370 |
} |
| 371 |
} |
| 372 |
|
| 373 |
/* AltGr */ |
| 374 |
if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask) |
| 375 |
!= MASK_HAS_BITS(remote_modifier_state, MapAltGrMask)) |
| 376 |
{ |
| 377 |
/* The remote modifier state is not correct */ |
| 378 |
if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask)) |
| 379 |
{ |
| 380 |
/* Needs this modifier. Send down. */ |
| 381 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RALT); |
| 382 |
} |
| 383 |
else |
| 384 |
{ |
| 385 |
/* Should not use this modifier. Send up. */ |
| 386 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT); |
| 387 |
} |
| 388 |
} |
| 389 |
|
| 390 |
/* NumLock */ |
| 391 |
if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask) |
| 392 |
!= MASK_HAS_BITS(remote_modifier_state, MapNumLockMask)) |
| 393 |
{ |
| 394 |
/* The remote modifier state is not correct */ |
| 395 |
uint16 new_remote_state = 0; |
| 396 |
|
| 397 |
if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)) |
| 398 |
{ |
| 399 |
DEBUG_KBD(("Remote NumLock state is incorrect, activating NumLock.\n")); |
| 400 |
new_remote_state |= KBD_FLAG_NUMLOCK; |
| 401 |
} |
| 402 |
else |
| 403 |
{ |
| 404 |
DEBUG_KBD(("Remote NumLock state is incorrect, deactivating NumLock.\n")); |
| 405 |
} |
| 406 |
|
| 407 |
rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0, new_remote_state, 0); |
| 408 |
update_modifier_state(SCANCODE_CHAR_NUMLOCK, True); |
| 409 |
} |
| 410 |
} |
| 411 |
|
| 412 |
|
| 413 |
static void |
| 414 |
update_modifier_state(uint16 modifiers, BOOL pressed) |
| 415 |
{ |
| 416 |
#ifdef WITH_DEBUG_KBD |
| 417 |
uint16 old_modifier_state; |
| 418 |
|
| 419 |
old_modifier_state = remote_modifier_state; |
| 420 |
#endif |
| 421 |
|
| 422 |
switch (modifiers) |
| 423 |
{ |
| 424 |
case SCANCODE_CHAR_LSHIFT: |
| 425 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed); |
| 426 |
break; |
| 427 |
case SCANCODE_CHAR_RSHIFT: |
| 428 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed); |
| 429 |
break; |
| 430 |
case SCANCODE_CHAR_LCTRL: |
| 431 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed); |
| 432 |
break; |
| 433 |
case SCANCODE_CHAR_RCTRL: |
| 434 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed); |
| 435 |
break; |
| 436 |
case SCANCODE_CHAR_LALT: |
| 437 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed); |
| 438 |
break; |
| 439 |
case SCANCODE_CHAR_RALT: |
| 440 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed); |
| 441 |
break; |
| 442 |
case SCANCODE_CHAR_LWIN: |
| 443 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed); |
| 444 |
break; |
| 445 |
case SCANCODE_CHAR_RWIN: |
| 446 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed); |
| 447 |
break; |
| 448 |
case SCANCODE_CHAR_NUMLOCK: |
| 449 |
/* KeyReleases for NumLocks are sent immediately. Toggle the |
| 450 |
modifier state only on Keypress */ |
| 451 |
if (pressed) |
| 452 |
{ |
| 453 |
BOOL newNumLockState; |
| 454 |
newNumLockState = |
| 455 |
(MASK_HAS_BITS |
| 456 |
(remote_modifier_state, MapNumLockMask) == False); |
| 457 |
MASK_CHANGE_BIT(remote_modifier_state, |
| 458 |
MapNumLockMask, newNumLockState); |
| 459 |
} |
| 460 |
break; |
| 461 |
} |
| 462 |
|
| 463 |
#ifdef WITH_DEBUG_KBD |
| 464 |
if (old_modifier_state != remote_modifier_state) |
| 465 |
{ |
| 466 |
DEBUG_KBD(("Before updating modifier_state:0x%x, pressed=0x%x\n", |
| 467 |
old_modifier_state, pressed)); |
| 468 |
DEBUG_KBD(("After updating modifier_state:0x%x\n", remote_modifier_state)); |
| 469 |
} |
| 470 |
#endif |
| 471 |
|
| 472 |
} |
| 473 |
|
| 474 |
/* Send keyboard input */ |
| 475 |
void |
| 476 |
rdp_send_scancode(uint32 time, uint16 flags, uint16 scancode) |
| 477 |
{ |
| 478 |
update_modifier_state(scancode, !(flags & RDP_KEYRELEASE)); |
| 479 |
|
| 480 |
if (scancode & SCANCODE_EXTENDED) |
| 481 |
{ |
| 482 |
DEBUG_KBD(("Sending extended scancode=0x%x, flags=0x%x\n", |
| 483 |
scancode & ~SCANCODE_EXTENDED, flags)); |
| 484 |
rdp_send_input(time, RDP_INPUT_SCANCODE, flags | KBD_FLAG_EXT, |
| 485 |
scancode & ~SCANCODE_EXTENDED, 0); |
| 486 |
} |
| 487 |
else |
| 488 |
{ |
| 489 |
DEBUG_KBD(("Sending scancode=0x%x, flags=0x%x\n", scancode, flags)); |
| 490 |
rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0); |
| 491 |
} |
| 492 |
} |
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