1 |
/* |
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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 1999-2001 |
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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/keysymdef.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 4096 |
31 |
#define KEYMAP_MASK (KEYMAP_SIZE - 1) |
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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 BOOL enable_compose; |
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|
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static key_translation keymap[KEYMAP_SIZE]; |
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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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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; |
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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], 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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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")) |
187 |
{ |
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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); |
193 |
add_to_keymap(keyname, scancode, modifiers, mapname); |
194 |
} |
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} |
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|
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fclose(fp); |
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return True; |
199 |
} |
200 |
|
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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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|
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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(uint32 keysym, unsigned int state, uint32 ev_time, BOOL pressed) |
218 |
{ |
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switch (keysym) |
220 |
{ |
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case XK_Break: |
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if (get_key_state(state, XK_Alt_L) || get_key_state(state, XK_Alt_R)) |
223 |
{ |
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/* toggle full screen */ |
225 |
if (pressed) |
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xwin_toggle_fullscreen(); |
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|
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} |
229 |
else |
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{ |
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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)); |
238 |
} |
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/* No break sequence */ |
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} |
241 |
|
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return True; |
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break; |
244 |
|
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case XK_Pause: |
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/* According to MS Keyboard Scan Code |
247 |
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 |
250 |
RDP. The code below seems to work, but with |
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the side effect that Left Ctrl stays |
252 |
down. Therefore, we release it when Pause |
253 |
is released. */ |
254 |
if (pressed) |
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{ |
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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); |
259 |
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); |
261 |
rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xc5, 0); |
262 |
} |
263 |
else |
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{ |
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// Release Left Ctrl |
266 |
rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYRELEASE, 0x1d, |
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0); |
268 |
} |
269 |
|
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return True; |
271 |
break; |
272 |
|
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case XK_Meta_L: /* Windows keys */ |
274 |
case XK_Super_L: |
275 |
case XK_Hyper_L: |
276 |
case XK_Meta_R: |
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case XK_Super_R: |
278 |
case XK_Hyper_R: |
279 |
if (pressed) |
280 |
{ |
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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); |
283 |
} |
284 |
else |
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{ |
286 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_ESC); |
287 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL); |
288 |
} |
289 |
return True; |
290 |
break; |
291 |
} |
292 |
return False; |
293 |
} |
294 |
|
295 |
|
296 |
key_translation |
297 |
xkeymap_translate_key(uint32 keysym, unsigned int keycode, unsigned int state) |
298 |
{ |
299 |
key_translation tr = { 0, 0 }; |
300 |
|
301 |
tr = keymap[keysym & KEYMAP_MASK]; |
302 |
|
303 |
if (tr.modifiers & MapInhibitMask) |
304 |
{ |
305 |
DEBUG_KBD(("Inhibiting key\n")); |
306 |
tr.scancode = 0; |
307 |
return tr; |
308 |
} |
309 |
|
310 |
if (tr.modifiers & MapLocalStateMask) |
311 |
{ |
312 |
/* The modifiers to send for this key should be obtained |
313 |
from the local state. Currently, only shift is implemented. */ |
314 |
if (state & ShiftMask) |
315 |
{ |
316 |
tr.modifiers = MapLeftShiftMask; |
317 |
} |
318 |
} |
319 |
|
320 |
if (tr.scancode != 0) |
321 |
{ |
322 |
DEBUG_KBD(("Found key translation, scancode=0x%x, modifiers=0x%x\n", |
323 |
tr.scancode, tr.modifiers)); |
324 |
return tr; |
325 |
} |
326 |
|
327 |
DEBUG_KBD(("No translation for (keysym 0x%lx, %s)\n", keysym, get_ksname(keysym))); |
328 |
|
329 |
/* not in keymap, try to interpret the raw scancode */ |
330 |
if ((keycode >= min_keycode) && (keycode <= 0x60)) |
331 |
{ |
332 |
tr.scancode = keycode - min_keycode; |
333 |
|
334 |
/* The modifiers to send for this key should be |
335 |
obtained from the local state. Currently, only |
336 |
shift is implemented. */ |
337 |
if (state & ShiftMask) |
338 |
{ |
339 |
tr.modifiers = MapLeftShiftMask; |
340 |
} |
341 |
|
342 |
DEBUG_KBD(("Sending guessed scancode 0x%x\n", tr.scancode)); |
343 |
} |
344 |
else |
345 |
{ |
346 |
DEBUG_KBD(("No good guess for keycode 0x%x found\n", keycode)); |
347 |
} |
348 |
|
349 |
return tr; |
350 |
} |
351 |
|
352 |
uint16 |
353 |
xkeymap_translate_button(unsigned int button) |
354 |
{ |
355 |
switch (button) |
356 |
{ |
357 |
case Button1: /* left */ |
358 |
return MOUSE_FLAG_BUTTON1; |
359 |
case Button2: /* middle */ |
360 |
return MOUSE_FLAG_BUTTON3; |
361 |
case Button3: /* right */ |
362 |
return MOUSE_FLAG_BUTTON2; |
363 |
case Button4: /* wheel up */ |
364 |
return MOUSE_FLAG_BUTTON4; |
365 |
case Button5: /* wheel down */ |
366 |
return MOUSE_FLAG_BUTTON5; |
367 |
} |
368 |
|
369 |
return 0; |
370 |
} |
371 |
|
372 |
char * |
373 |
get_ksname(uint32 keysym) |
374 |
{ |
375 |
char *ksname = NULL; |
376 |
|
377 |
if (keysym == NoSymbol) |
378 |
ksname = "NoSymbol"; |
379 |
else if (!(ksname = XKeysymToString(keysym))) |
380 |
ksname = "(no name)"; |
381 |
|
382 |
return ksname; |
383 |
} |
384 |
|
385 |
|
386 |
void |
387 |
ensure_remote_modifiers(uint32 ev_time, key_translation tr) |
388 |
{ |
389 |
/* If this key is a modifier, do nothing */ |
390 |
switch (tr.scancode) |
391 |
{ |
392 |
case SCANCODE_CHAR_LSHIFT: |
393 |
case SCANCODE_CHAR_RSHIFT: |
394 |
case SCANCODE_CHAR_LCTRL: |
395 |
case SCANCODE_CHAR_RCTRL: |
396 |
case SCANCODE_CHAR_LALT: |
397 |
case SCANCODE_CHAR_RALT: |
398 |
case SCANCODE_CHAR_LWIN: |
399 |
case SCANCODE_CHAR_RWIN: |
400 |
case SCANCODE_CHAR_NUMLOCK: |
401 |
return; |
402 |
default: |
403 |
break; |
404 |
} |
405 |
|
406 |
/* Shift. Left shift and right shift are treated as equal; either is fine. */ |
407 |
if (MASK_HAS_BITS(tr.modifiers, MapShiftMask) |
408 |
!= MASK_HAS_BITS(remote_modifier_state, MapShiftMask)) |
409 |
{ |
410 |
/* The remote modifier state is not correct */ |
411 |
if (MASK_HAS_BITS(tr.modifiers, MapLeftShiftMask)) |
412 |
{ |
413 |
/* Needs left shift. Send down. */ |
414 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LSHIFT); |
415 |
} |
416 |
else if (MASK_HAS_BITS(tr.modifiers, MapRightShiftMask)) |
417 |
{ |
418 |
/* Needs right shift. Send down. */ |
419 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RSHIFT); |
420 |
} |
421 |
else |
422 |
{ |
423 |
/* Should not use this modifier. Send up for shift currently pressed. */ |
424 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask)) |
425 |
/* Left shift is down */ |
426 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT); |
427 |
else |
428 |
/* Right shift is down */ |
429 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT); |
430 |
} |
431 |
} |
432 |
|
433 |
/* AltGr */ |
434 |
if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask) |
435 |
!= MASK_HAS_BITS(remote_modifier_state, MapAltGrMask)) |
436 |
{ |
437 |
/* The remote modifier state is not correct */ |
438 |
if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask)) |
439 |
{ |
440 |
/* Needs this modifier. Send down. */ |
441 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RALT); |
442 |
} |
443 |
else |
444 |
{ |
445 |
/* Should not use this modifier. Send up. */ |
446 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT); |
447 |
} |
448 |
} |
449 |
|
450 |
/* NumLock */ |
451 |
if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask) |
452 |
!= MASK_HAS_BITS(remote_modifier_state, MapNumLockMask)) |
453 |
{ |
454 |
/* The remote modifier state is not correct */ |
455 |
uint16 new_remote_state = 0; |
456 |
|
457 |
if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)) |
458 |
{ |
459 |
DEBUG_KBD(("Remote NumLock state is incorrect, activating NumLock.\n")); |
460 |
new_remote_state |= KBD_FLAG_NUMLOCK; |
461 |
} |
462 |
else |
463 |
{ |
464 |
DEBUG_KBD(("Remote NumLock state is incorrect, deactivating NumLock.\n")); |
465 |
} |
466 |
|
467 |
rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0, new_remote_state, 0); |
468 |
update_modifier_state(SCANCODE_CHAR_NUMLOCK, True); |
469 |
} |
470 |
} |
471 |
|
472 |
|
473 |
void |
474 |
reset_modifier_keys(unsigned int state) |
475 |
{ |
476 |
/* reset keys */ |
477 |
uint32 ev_time; |
478 |
ev_time = time(NULL); |
479 |
|
480 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask) && !get_key_state(state, XK_Shift_L)) |
481 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT); |
482 |
|
483 |
if (MASK_HAS_BITS(remote_modifier_state, MapRightShiftMask) && !get_key_state(state, XK_Shift_R)) |
484 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT); |
485 |
|
486 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftCtrlMask) && !get_key_state(state, XK_Control_L)) |
487 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL); |
488 |
|
489 |
if (MASK_HAS_BITS(remote_modifier_state, MapRightCtrlMask) && !get_key_state(state, XK_Control_R)) |
490 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RCTRL); |
491 |
|
492 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftAltMask) && !get_key_state(state, XK_Alt_L)) |
493 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LALT); |
494 |
|
495 |
if (MASK_HAS_BITS(remote_modifier_state, MapRightAltMask) && |
496 |
!get_key_state(state, XK_Alt_R) && !get_key_state(state, XK_Mode_switch)) |
497 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT); |
498 |
} |
499 |
|
500 |
|
501 |
static void |
502 |
update_modifier_state(uint8 scancode, BOOL pressed) |
503 |
{ |
504 |
#ifdef WITH_DEBUG_KBD |
505 |
uint16 old_modifier_state; |
506 |
|
507 |
old_modifier_state = remote_modifier_state; |
508 |
#endif |
509 |
|
510 |
switch (scancode) |
511 |
{ |
512 |
case SCANCODE_CHAR_LSHIFT: |
513 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed); |
514 |
break; |
515 |
case SCANCODE_CHAR_RSHIFT: |
516 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed); |
517 |
break; |
518 |
case SCANCODE_CHAR_LCTRL: |
519 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed); |
520 |
break; |
521 |
case SCANCODE_CHAR_RCTRL: |
522 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed); |
523 |
break; |
524 |
case SCANCODE_CHAR_LALT: |
525 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed); |
526 |
break; |
527 |
case SCANCODE_CHAR_RALT: |
528 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed); |
529 |
break; |
530 |
case SCANCODE_CHAR_LWIN: |
531 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed); |
532 |
break; |
533 |
case SCANCODE_CHAR_RWIN: |
534 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed); |
535 |
break; |
536 |
case SCANCODE_CHAR_NUMLOCK: |
537 |
/* KeyReleases for NumLocks are sent immediately. Toggle the |
538 |
modifier state only on Keypress */ |
539 |
if (pressed) |
540 |
{ |
541 |
BOOL newNumLockState; |
542 |
newNumLockState = |
543 |
(MASK_HAS_BITS |
544 |
(remote_modifier_state, MapNumLockMask) == False); |
545 |
MASK_CHANGE_BIT(remote_modifier_state, |
546 |
MapNumLockMask, newNumLockState); |
547 |
} |
548 |
break; |
549 |
} |
550 |
|
551 |
#ifdef WITH_DEBUG_KBD |
552 |
if (old_modifier_state != remote_modifier_state) |
553 |
{ |
554 |
DEBUG_KBD(("Before updating modifier_state:0x%x, pressed=0x%x\n", |
555 |
old_modifier_state, pressed)); |
556 |
DEBUG_KBD(("After updating modifier_state:0x%x\n", remote_modifier_state)); |
557 |
} |
558 |
#endif |
559 |
|
560 |
} |
561 |
|
562 |
/* Send keyboard input */ |
563 |
void |
564 |
rdp_send_scancode(uint32 time, uint16 flags, uint8 scancode) |
565 |
{ |
566 |
update_modifier_state(scancode, !(flags & RDP_KEYRELEASE)); |
567 |
|
568 |
if (scancode & SCANCODE_EXTENDED) |
569 |
{ |
570 |
DEBUG_KBD(("Sending extended scancode=0x%x, flags=0x%x\n", |
571 |
scancode & ~SCANCODE_EXTENDED, flags)); |
572 |
rdp_send_input(time, RDP_INPUT_SCANCODE, flags | KBD_FLAG_EXT, |
573 |
scancode & ~SCANCODE_EXTENDED, 0); |
574 |
} |
575 |
else |
576 |
{ |
577 |
DEBUG_KBD(("Sending scancode=0x%x, flags=0x%x\n", scancode, flags)); |
578 |
rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0); |
579 |
} |
580 |
} |