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) |
32 |
#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(uint16 modifiers, 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")) |
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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); |
194 |
} |
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} |
196 |
|
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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, 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 (get_key_state(XK_Alt_L) || get_key_state(XK_Alt_R)) |
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{ |
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if (pressed) |
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xwin_toggle_fullscreen(); |
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return True; |
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} |
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break; |
229 |
|
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case XK_Pause: |
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/* 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 |
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is released. */ |
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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); |
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rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xe1, 0); |
245 |
rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0x9d, 0); |
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rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYPRESS, 0xc5, 0); |
247 |
} |
248 |
else |
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{ |
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// Release Left Ctrl |
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rdp_send_input(ev_time, RDP_INPUT_SCANCODE, RDP_KEYRELEASE, 0x1d, |
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0); |
253 |
} |
254 |
|
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return True; |
256 |
break; |
257 |
|
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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: |
261 |
case XK_Meta_R: |
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case XK_Super_R: |
263 |
case XK_Hyper_R: |
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if (pressed) |
265 |
{ |
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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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} |
269 |
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); |
273 |
} |
274 |
return True; |
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break; |
276 |
} |
277 |
return False; |
278 |
} |
279 |
|
280 |
|
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key_translation |
282 |
xkeymap_translate_key(uint32 keysym, unsigned int keycode, unsigned int state) |
283 |
{ |
284 |
key_translation tr = { 0, 0 }; |
285 |
|
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tr = keymap[keysym & KEYMAP_MASK]; |
287 |
|
288 |
if (tr.modifiers & MapInhibitMask) |
289 |
{ |
290 |
DEBUG_KBD(("Inhibiting key\n")); |
291 |
tr.scancode = 0; |
292 |
return tr; |
293 |
} |
294 |
|
295 |
if (tr.modifiers & MapLocalStateMask) |
296 |
{ |
297 |
/* The modifiers to send for this key should be obtained |
298 |
from the local state. Currently, only shift is implemented. */ |
299 |
if (state & ShiftMask) |
300 |
{ |
301 |
tr.modifiers = MapLeftShiftMask; |
302 |
} |
303 |
} |
304 |
|
305 |
if (tr.scancode != 0) |
306 |
{ |
307 |
DEBUG_KBD(("Found key translation, scancode=0x%x, modifiers=0x%x\n", |
308 |
tr.scancode, tr.modifiers)); |
309 |
return tr; |
310 |
} |
311 |
|
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DEBUG_KBD(("No translation for (keysym 0x%lx, %s)\n", keysym, get_ksname(keysym))); |
313 |
|
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/* not in keymap, try to interpret the raw scancode */ |
315 |
if ((keycode >= min_keycode) && (keycode <= 0x60)) |
316 |
{ |
317 |
tr.scancode = keycode - min_keycode; |
318 |
|
319 |
/* The modifiers to send for this key should be |
320 |
obtained from the local state. Currently, only |
321 |
shift is implemented. */ |
322 |
if (state & ShiftMask) |
323 |
{ |
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tr.modifiers = MapLeftShiftMask; |
325 |
} |
326 |
|
327 |
DEBUG_KBD(("Sending guessed scancode 0x%x\n", tr.scancode)); |
328 |
} |
329 |
else |
330 |
{ |
331 |
DEBUG_KBD(("No good guess for keycode 0x%x found\n", keycode)); |
332 |
} |
333 |
|
334 |
return tr; |
335 |
} |
336 |
|
337 |
uint16 |
338 |
xkeymap_translate_button(unsigned int button) |
339 |
{ |
340 |
switch (button) |
341 |
{ |
342 |
case Button1: /* left */ |
343 |
return MOUSE_FLAG_BUTTON1; |
344 |
case Button2: /* middle */ |
345 |
return MOUSE_FLAG_BUTTON3; |
346 |
case Button3: /* right */ |
347 |
return MOUSE_FLAG_BUTTON2; |
348 |
case Button4: /* wheel up */ |
349 |
return MOUSE_FLAG_BUTTON4; |
350 |
case Button5: /* wheel down */ |
351 |
return MOUSE_FLAG_BUTTON5; |
352 |
} |
353 |
|
354 |
return 0; |
355 |
} |
356 |
|
357 |
char * |
358 |
get_ksname(uint32 keysym) |
359 |
{ |
360 |
char *ksname = NULL; |
361 |
|
362 |
if (keysym == NoSymbol) |
363 |
ksname = "NoSymbol"; |
364 |
else if (!(ksname = XKeysymToString(keysym))) |
365 |
ksname = "(no name)"; |
366 |
|
367 |
return ksname; |
368 |
} |
369 |
|
370 |
|
371 |
void |
372 |
ensure_remote_modifiers(uint32 ev_time, key_translation tr) |
373 |
{ |
374 |
/* If this key is a modifier, do nothing */ |
375 |
switch (tr.scancode) |
376 |
{ |
377 |
case SCANCODE_CHAR_LSHIFT: |
378 |
case SCANCODE_CHAR_RSHIFT: |
379 |
case SCANCODE_CHAR_LCTRL: |
380 |
case SCANCODE_CHAR_RCTRL: |
381 |
case SCANCODE_CHAR_LALT: |
382 |
case SCANCODE_CHAR_RALT: |
383 |
case SCANCODE_CHAR_LWIN: |
384 |
case SCANCODE_CHAR_RWIN: |
385 |
case SCANCODE_CHAR_NUMLOCK: |
386 |
return; |
387 |
default: |
388 |
break; |
389 |
} |
390 |
|
391 |
/* Shift. Left shift and right shift are treated as equal; either is fine. */ |
392 |
if (MASK_HAS_BITS(tr.modifiers, MapShiftMask) |
393 |
!= MASK_HAS_BITS(remote_modifier_state, MapShiftMask)) |
394 |
{ |
395 |
/* The remote modifier state is not correct */ |
396 |
if (MASK_HAS_BITS(tr.modifiers, MapLeftShiftMask)) |
397 |
{ |
398 |
/* Needs left shift. Send down. */ |
399 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LSHIFT); |
400 |
} |
401 |
else if (MASK_HAS_BITS(tr.modifiers, MapRightShiftMask)) |
402 |
{ |
403 |
/* Needs right shift. Send down. */ |
404 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RSHIFT); |
405 |
} |
406 |
else |
407 |
{ |
408 |
/* Should not use this modifier. Send up for shift currently pressed. */ |
409 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask)) |
410 |
/* Left shift is down */ |
411 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT); |
412 |
else |
413 |
/* Right shift is down */ |
414 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT); |
415 |
} |
416 |
} |
417 |
|
418 |
/* AltGr */ |
419 |
if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask) |
420 |
!= MASK_HAS_BITS(remote_modifier_state, MapAltGrMask)) |
421 |
{ |
422 |
/* The remote modifier state is not correct */ |
423 |
if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask)) |
424 |
{ |
425 |
/* Needs this modifier. Send down. */ |
426 |
rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RALT); |
427 |
} |
428 |
else |
429 |
{ |
430 |
/* Should not use this modifier. Send up. */ |
431 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT); |
432 |
} |
433 |
} |
434 |
|
435 |
/* NumLock */ |
436 |
if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask) |
437 |
!= MASK_HAS_BITS(remote_modifier_state, MapNumLockMask)) |
438 |
{ |
439 |
/* The remote modifier state is not correct */ |
440 |
uint16 new_remote_state = 0; |
441 |
|
442 |
if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)) |
443 |
{ |
444 |
DEBUG_KBD(("Remote NumLock state is incorrect, activating NumLock.\n")); |
445 |
new_remote_state |= KBD_FLAG_NUMLOCK; |
446 |
} |
447 |
else |
448 |
{ |
449 |
DEBUG_KBD(("Remote NumLock state is incorrect, deactivating NumLock.\n")); |
450 |
} |
451 |
|
452 |
rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0, new_remote_state, 0); |
453 |
update_modifier_state(SCANCODE_CHAR_NUMLOCK, True); |
454 |
} |
455 |
} |
456 |
|
457 |
|
458 |
void |
459 |
reset_modifier_keys(void) |
460 |
{ |
461 |
/* reset keys */ |
462 |
uint32 ev_time; |
463 |
ev_time = time(NULL); |
464 |
|
465 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask) && !get_key_state(XK_Shift_L)) |
466 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT); |
467 |
|
468 |
if (MASK_HAS_BITS(remote_modifier_state, MapRightShiftMask) && !get_key_state(XK_Shift_R)) |
469 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT); |
470 |
|
471 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftCtrlMask) && !get_key_state(XK_Control_L)) |
472 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL); |
473 |
|
474 |
if (MASK_HAS_BITS(remote_modifier_state, MapRightCtrlMask) && !get_key_state(XK_Control_R)) |
475 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RCTRL); |
476 |
|
477 |
if (MASK_HAS_BITS(remote_modifier_state, MapLeftAltMask) && !get_key_state(XK_Alt_L)) |
478 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LALT); |
479 |
|
480 |
if (MASK_HAS_BITS(remote_modifier_state, MapRightAltMask) && |
481 |
!get_key_state(XK_Alt_R) && !get_key_state(XK_Mode_switch)) |
482 |
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT); |
483 |
} |
484 |
|
485 |
|
486 |
static void |
487 |
update_modifier_state(uint16 modifiers, BOOL pressed) |
488 |
{ |
489 |
#ifdef WITH_DEBUG_KBD |
490 |
uint16 old_modifier_state; |
491 |
|
492 |
old_modifier_state = remote_modifier_state; |
493 |
#endif |
494 |
|
495 |
switch (modifiers) |
496 |
{ |
497 |
case SCANCODE_CHAR_LSHIFT: |
498 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed); |
499 |
break; |
500 |
case SCANCODE_CHAR_RSHIFT: |
501 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed); |
502 |
break; |
503 |
case SCANCODE_CHAR_LCTRL: |
504 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed); |
505 |
break; |
506 |
case SCANCODE_CHAR_RCTRL: |
507 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed); |
508 |
break; |
509 |
case SCANCODE_CHAR_LALT: |
510 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed); |
511 |
break; |
512 |
case SCANCODE_CHAR_RALT: |
513 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed); |
514 |
break; |
515 |
case SCANCODE_CHAR_LWIN: |
516 |
MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed); |
517 |
break; |
518 |
case SCANCODE_CHAR_RWIN: |
519 |
MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed); |
520 |
break; |
521 |
case SCANCODE_CHAR_NUMLOCK: |
522 |
/* KeyReleases for NumLocks are sent immediately. Toggle the |
523 |
modifier state only on Keypress */ |
524 |
if (pressed) |
525 |
{ |
526 |
BOOL newNumLockState; |
527 |
newNumLockState = |
528 |
(MASK_HAS_BITS |
529 |
(remote_modifier_state, MapNumLockMask) == False); |
530 |
MASK_CHANGE_BIT(remote_modifier_state, |
531 |
MapNumLockMask, newNumLockState); |
532 |
} |
533 |
break; |
534 |
} |
535 |
|
536 |
#ifdef WITH_DEBUG_KBD |
537 |
if (old_modifier_state != remote_modifier_state) |
538 |
{ |
539 |
DEBUG_KBD(("Before updating modifier_state:0x%x, pressed=0x%x\n", |
540 |
old_modifier_state, pressed)); |
541 |
DEBUG_KBD(("After updating modifier_state:0x%x\n", remote_modifier_state)); |
542 |
} |
543 |
#endif |
544 |
|
545 |
} |
546 |
|
547 |
/* Send keyboard input */ |
548 |
void |
549 |
rdp_send_scancode(uint32 time, uint16 flags, uint16 scancode) |
550 |
{ |
551 |
update_modifier_state(scancode, !(flags & RDP_KEYRELEASE)); |
552 |
|
553 |
if (scancode & SCANCODE_EXTENDED) |
554 |
{ |
555 |
DEBUG_KBD(("Sending extended scancode=0x%x, flags=0x%x\n", |
556 |
scancode & ~SCANCODE_EXTENDED, flags)); |
557 |
rdp_send_input(time, RDP_INPUT_SCANCODE, flags | KBD_FLAG_EXT, |
558 |
scancode & ~SCANCODE_EXTENDED, 0); |
559 |
} |
560 |
else |
561 |
{ |
562 |
DEBUG_KBD(("Sending scancode=0x%x, flags=0x%x\n", scancode, flags)); |
563 |
rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0); |
564 |
} |
565 |
} |