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/* |
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rdesktop: A Remote Desktop Protocol client. |
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User interface services - X keyboard mapping |
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Copyright (C) Matthew Chapman 1999-2002 |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(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 |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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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 |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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#include <X11/Xlib.h> |
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#define XK_MISCELLANY |
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#include <X11/keysym.h> |
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#include <ctype.h> |
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#include <limits.h> |
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#include <time.h> |
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#include "rdesktop.h" |
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#include "scancodes.h" |
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|
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#define KEYMAP_SIZE 0xffff+1 |
31 |
#define KEYMAP_MASK 0xffff |
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#define KEYMAP_MAX_LINE_LENGTH 80 |
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|
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extern Display *display; |
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extern char keymapname[16]; |
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extern int keylayout; |
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extern int win_button_size; |
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extern BOOL enable_compose; |
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|
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static BOOL keymap_loaded; |
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static key_translation keymap[KEYMAP_SIZE]; |
42 |
static int min_keycode; |
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static uint16 remote_modifier_state = 0; |
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|
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static void update_modifier_state(uint8 scancode, BOOL pressed); |
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|
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static void |
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add_to_keymap(char *keyname, uint8 scancode, uint16 modifiers, char *mapname) |
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{ |
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KeySym keysym; |
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|
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keysym = XStringToKeysym(keyname); |
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if (keysym == NoSymbol) |
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{ |
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DEBUG_KBD(("Bad keysym \"%s\" in keymap %s (ignoring)\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; |
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} |
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|
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|
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static BOOL |
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xkeymap_read(char *mapname) |
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{ |
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FILE *fp; |
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char line[KEYMAP_MAX_LINE_LENGTH]; |
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char path[PATH_MAX], inplace_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; |
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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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/* in case we are running from the source tree */ |
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strcpy(inplace_path, "keymaps/"); |
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strncat(inplace_path, mapname, sizeof(inplace_path) - sizeof("keymaps/")); |
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|
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fp = fopen(inplace_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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|
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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); |
188 |
} |
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|
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if (strstr(line_rest, "inhibit")) |
191 |
{ |
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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 |
200 |
plus shift */ |
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for (p = keyname; *p; p++) |
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*p = toupper((int) *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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char *mapname_ptr; |
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|
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/* Make keymapname lowercase */ |
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mapname_ptr = keymapname; |
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while (*mapname_ptr) |
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{ |
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*mapname_ptr = tolower((int) *mapname_ptr); |
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mapname_ptr++; |
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} |
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|
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if (strcmp(keymapname, "none")) |
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{ |
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if (xkeymap_read(keymapname)) |
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keymap_loaded = True; |
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} |
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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(uint32 keysym, unsigned int state, 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_Return: |
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if ((get_key_state(state, XK_Alt_L) || get_key_state(state, XK_Alt_R)) |
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&& (get_key_state(state, XK_Control_L) |
247 |
|| get_key_state(state, XK_Control_R))) |
248 |
{ |
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/* Ctrl-Alt-Enter: toggle full screen */ |
250 |
if (pressed) |
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xwin_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_Break: |
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/* Send Break sequence E0 46 E0 C6 */ |
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if (pressed) |
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{ |
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rdp_send_scancode(ev_time, RDP_KEYPRESS, |
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(SCANCODE_EXTENDED | 0x46)); |
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rdp_send_scancode(ev_time, RDP_KEYPRESS, |
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(SCANCODE_EXTENDED | 0xc6)); |
264 |
} |
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/* No release sequence */ |
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return True; |
267 |
|
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case XK_Pause: |
269 |
/* According to MS Keyboard Scan Code |
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Specification, pressing Pause should result |
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in E1 1D 45 E1 9D C5. I'm not exactly sure |
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of how this is supposed to be sent via |
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RDP. The code below seems to work, but with |
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the side effect that Left Ctrl stays |
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down. Therefore, we release it when Pause |
276 |
is released. */ |
277 |
if (pressed) |
278 |
{ |
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rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xe1, 0); |
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rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x1d, 0); |
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rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x45, 0); |
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rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xe1, 0); |
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rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x9d, 0); |
284 |
rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xc5, 0); |
285 |
} |
286 |
else |
287 |
{ |
288 |
/* Release Left Ctrl */ |
289 |
rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYRELEASE, |
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0x1d, 0); |
291 |
} |
292 |
return True; |
293 |
|
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case XK_Meta_L: /* Windows keys */ |
295 |
case XK_Super_L: |
296 |
case XK_Hyper_L: |
297 |
case XK_Meta_R: |
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case XK_Super_R: |
299 |
case XK_Hyper_R: |
300 |
if (pressed) |
301 |
{ |
302 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LCTRL); |
303 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_ESC); |
304 |
} |
305 |
else |
306 |
{ |
307 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_ESC); |
308 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL); |
309 |
} |
310 |
return True; |
311 |
|
312 |
case XK_space: |
313 |
/* Prevent access to the Windows system menu in single app mode */ |
314 |
if (win_button_size |
315 |
&& (get_key_state(state, XK_Alt_L) || get_key_state(state, XK_Alt_R))) |
316 |
return True; |
317 |
|
318 |
} |
319 |
return False; |
320 |
} |
321 |
|
322 |
|
323 |
key_translation |
324 |
xkeymap_translate_key(uint32 keysym, unsigned int keycode, unsigned int state) |
325 |
{ |
326 |
key_translation tr = { 0, 0 }; |
327 |
|
328 |
tr = keymap[keysym & KEYMAP_MASK]; |
329 |
|
330 |
if (tr.modifiers & MapInhibitMask) |
331 |
{ |
332 |
DEBUG_KBD(("Inhibiting key\n")); |
333 |
tr.scancode = 0; |
334 |
return tr; |
335 |
} |
336 |
|
337 |
if (tr.modifiers & MapLocalStateMask) |
338 |
{ |
339 |
/* The modifiers to send for this key should be obtained |
340 |
from the local state. Currently, only shift is implemented. */ |
341 |
if (state & ShiftMask) |
342 |
{ |
343 |
tr.modifiers = MapLeftShiftMask; |
344 |
} |
345 |
} |
346 |
|
347 |
if (tr.scancode != 0) |
348 |
{ |
349 |
DEBUG_KBD(("Found key translation, scancode=0x%x, modifiers=0x%x\n", |
350 |
tr.scancode, tr.modifiers)); |
351 |
return tr; |
352 |
} |
353 |
|
354 |
if (keymap_loaded) |
355 |
warning("No translation for (keysym 0x%lx, %s)\n", keysym, get_ksname(keysym)); |
356 |
|
357 |
/* not in keymap, try to interpret the raw scancode */ |
358 |
if ((keycode >= min_keycode) && (keycode <= 0x60)) |
359 |
{ |
360 |
tr.scancode = keycode - min_keycode; |
361 |
|
362 |
/* The modifiers to send for this key should be |
363 |
obtained from the local state. Currently, only |
364 |
shift is implemented. */ |
365 |
if (state & ShiftMask) |
366 |
{ |
367 |
tr.modifiers = MapLeftShiftMask; |
368 |
} |
369 |
|
370 |
DEBUG_KBD(("Sending guessed scancode 0x%x\n", tr.scancode)); |
371 |
} |
372 |
else |
373 |
{ |
374 |
DEBUG_KBD(("No good guess for keycode 0x%x found\n", keycode)); |
375 |
} |
376 |
|
377 |
return tr; |
378 |
} |
379 |
|
380 |
uint16 |
381 |
xkeymap_translate_button(unsigned int button) |
382 |
{ |
383 |
switch (button) |
384 |
{ |
385 |
case Button1: /* left */ |
386 |
return MOUSE_FLAG_BUTTON1; |
387 |
case Button2: /* middle */ |
388 |
return MOUSE_FLAG_BUTTON3; |
389 |
case Button3: /* right */ |
390 |
return MOUSE_FLAG_BUTTON2; |
391 |
case Button4: /* wheel up */ |
392 |
return MOUSE_FLAG_BUTTON4; |
393 |
case Button5: /* wheel down */ |
394 |
return MOUSE_FLAG_BUTTON5; |
395 |
} |
396 |
|
397 |
return 0; |
398 |
} |
399 |
|
400 |
char * |
401 |
get_ksname(uint32 keysym) |
402 |
{ |
403 |
char *ksname = NULL; |
404 |
|
405 |
if (keysym == NoSymbol) |
406 |
ksname = "NoSymbol"; |
407 |
else if (!(ksname = XKeysymToString(keysym))) |
408 |
ksname = "(no name)"; |
409 |
|
410 |
return ksname; |
411 |
} |
412 |
|
413 |
|
414 |
void |
415 |
ensure_remote_modifiers(uint32 ev_time, key_translation tr) |
416 |
{ |
417 |
/* If this key is a modifier, do nothing */ |
418 |
switch (tr.scancode) |
419 |
{ |
420 |
case SCANCODE_CHAR_LSHIFT: |
421 |
case SCANCODE_CHAR_RSHIFT: |
422 |
case SCANCODE_CHAR_LCTRL: |
423 |
case SCANCODE_CHAR_RCTRL: |
424 |
case SCANCODE_CHAR_LALT: |
425 |
case SCANCODE_CHAR_RALT: |
426 |
case SCANCODE_CHAR_LWIN: |
427 |
case SCANCODE_CHAR_RWIN: |
428 |
case SCANCODE_CHAR_NUMLOCK: |
429 |
return; |
430 |
default: |
431 |
break; |
432 |
} |
433 |
|
434 |
/* NumLock */ |
435 |
if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask) |
436 |
!= MASK_HAS_BITS(remote_modifier_state, MapNumLockMask)) |
437 |
{ |
438 |
/* The remote modifier state is not correct */ |
439 |
uint16 new_remote_state; |
440 |
|
441 |
if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)) |
442 |
{ |
443 |
DEBUG_KBD(("Remote NumLock state is incorrect, activating NumLock.\n")); |
444 |
new_remote_state = KBD_FLAG_NUMLOCK; |
445 |
remote_modifier_state = MapNumLockMask; |
446 |
} |
447 |
else |
448 |
{ |
449 |
DEBUG_KBD(("Remote NumLock state is incorrect, deactivating NumLock.\n")); |
450 |
new_remote_state = 0; |
451 |
remote_modifier_state = 0; |
452 |
} |
453 |
|
454 |
rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0, new_remote_state, 0); |
455 |
} |
456 |
|
457 |
/* Shift. Left shift and right shift are treated as equal; either is fine. */ |
458 |
if (MASK_HAS_BITS(tr.modifiers, MapShiftMask) |
459 |
!= MASK_HAS_BITS(remote_modifier_state, MapShiftMask)) |
460 |
{ |
461 |
/* The remote modifier state is not correct */ |
462 |
if (MASK_HAS_BITS(tr.modifiers, MapLeftShiftMask)) |
463 |
{ |
464 |
/* Needs left shift. Send down. */ |
465 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LSHIFT); |
466 |
} |
467 |
else if (MASK_HAS_BITS(tr.modifiers, MapRightShiftMask)) |
468 |
{ |
469 |
/* Needs right shift. Send down. */ |
470 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RSHIFT); |
471 |
} |
472 |
else |
473 |
{ |
474 |
/* Should not use this modifier. Send up for shift currently pressed. */ |
475 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask)) |
476 |
/* Left shift is down */ |
477 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT); |
478 |
else |
479 |
/* Right shift is down */ |
480 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT); |
481 |
} |
482 |
} |
483 |
|
484 |
/* AltGr */ |
485 |
if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask) |
486 |
!= MASK_HAS_BITS(remote_modifier_state, MapAltGrMask)) |
487 |
{ |
488 |
/* The remote modifier state is not correct */ |
489 |
if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask)) |
490 |
{ |
491 |
/* Needs this modifier. Send down. */ |
492 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RALT); |
493 |
} |
494 |
else |
495 |
{ |
496 |
/* Should not use this modifier. Send up. */ |
497 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT); |
498 |
} |
499 |
} |
500 |
|
501 |
|
502 |
} |
503 |
|
504 |
|
505 |
void |
506 |
reset_modifier_keys(unsigned int state) |
507 |
{ |
508 |
/* reset keys */ |
509 |
uint32 ev_time; |
510 |
ev_time = time(NULL); |
511 |
|
512 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask) |
513 |
&& !get_key_state(state, XK_Shift_L)) |
514 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT); |
515 |
|
516 |
if (MASK_HAS_BITS(remote_modifier_state, MapRightShiftMask) |
517 |
&& !get_key_state(state, XK_Shift_R)) |
518 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT); |
519 |
|
520 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftCtrlMask) |
521 |
&& !get_key_state(state, XK_Control_L)) |
522 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL); |
523 |
|
524 |
if (MASK_HAS_BITS(remote_modifier_state, MapRightCtrlMask) |
525 |
&& !get_key_state(state, XK_Control_R)) |
526 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RCTRL); |
527 |
|
528 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftAltMask) && !get_key_state(state, XK_Alt_L)) |
529 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LALT); |
530 |
|
531 |
if (MASK_HAS_BITS(remote_modifier_state, MapRightAltMask) && |
532 |
!get_key_state(state, XK_Alt_R) && !get_key_state(state, XK_Mode_switch)) |
533 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT); |
534 |
} |
535 |
|
536 |
|
537 |
static void |
538 |
update_modifier_state(uint8 scancode, BOOL pressed) |
539 |
{ |
540 |
#ifdef WITH_DEBUG_KBD |
541 |
uint16 old_modifier_state; |
542 |
|
543 |
old_modifier_state = remote_modifier_state; |
544 |
#endif |
545 |
|
546 |
switch (scancode) |
547 |
{ |
548 |
case SCANCODE_CHAR_LSHIFT: |
549 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed); |
550 |
break; |
551 |
case SCANCODE_CHAR_RSHIFT: |
552 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed); |
553 |
break; |
554 |
case SCANCODE_CHAR_LCTRL: |
555 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed); |
556 |
break; |
557 |
case SCANCODE_CHAR_RCTRL: |
558 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed); |
559 |
break; |
560 |
case SCANCODE_CHAR_LALT: |
561 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed); |
562 |
break; |
563 |
case SCANCODE_CHAR_RALT: |
564 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed); |
565 |
break; |
566 |
case SCANCODE_CHAR_LWIN: |
567 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed); |
568 |
break; |
569 |
case SCANCODE_CHAR_RWIN: |
570 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed); |
571 |
break; |
572 |
case SCANCODE_CHAR_NUMLOCK: |
573 |
/* KeyReleases for NumLocks are sent immediately. Toggle the |
574 |
modifier state only on Keypress */ |
575 |
if (pressed) |
576 |
{ |
577 |
BOOL newNumLockState; |
578 |
newNumLockState = |
579 |
(MASK_HAS_BITS |
580 |
(remote_modifier_state, MapNumLockMask) == False); |
581 |
MASK_CHANGE_BIT(remote_modifier_state, |
582 |
MapNumLockMask, newNumLockState); |
583 |
} |
584 |
break; |
585 |
} |
586 |
|
587 |
#ifdef WITH_DEBUG_KBD |
588 |
if (old_modifier_state != remote_modifier_state) |
589 |
{ |
590 |
DEBUG_KBD(("Before updating modifier_state:0x%x, pressed=0x%x\n", |
591 |
old_modifier_state, pressed)); |
592 |
DEBUG_KBD(("After updating modifier_state:0x%x\n", remote_modifier_state)); |
593 |
} |
594 |
#endif |
595 |
|
596 |
} |
597 |
|
598 |
/* Send keyboard input */ |
599 |
void |
600 |
rdp_send_scancode(uint32 time, uint16 flags, uint8 scancode) |
601 |
{ |
602 |
update_modifier_state(scancode, !(flags & RDP_KEYRELEASE)); |
603 |
|
604 |
if (scancode & SCANCODE_EXTENDED) |
605 |
{ |
606 |
DEBUG_KBD(("Sending extended scancode=0x%x, flags=0x%x\n", |
607 |
scancode & ~SCANCODE_EXTENDED, flags)); |
608 |
rdp_send_input(time, RDP_INPUT_SCANCODE, flags | KBD_FLAG_EXT, |
609 |
scancode & ~SCANCODE_EXTENDED, 0); |
610 |
} |
611 |
else |
612 |
{ |
613 |
DEBUG_KBD(("Sending scancode=0x%x, flags=0x%x\n", scancode, flags)); |
614 |
rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0); |
615 |
} |
616 |
} |