24d1be278a
git-svn-id: svn://svn.code.sf.net/p/rdesktop/code/trunk/rdesktop@446 423420c4-83ab-492f-b58f-81f9feb106b5
621 lines
15 KiB
C
621 lines
15 KiB
C
/*
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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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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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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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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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#ifdef RDP2VNC
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#include "vnc/x11stubs.h"
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#else
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#include <X11/Xlib.h>
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#include <X11/keysym.h>
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#endif
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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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#define KEYMAP_SIZE 0xffff+1
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#define KEYMAP_MASK 0xffff
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#define KEYMAP_MAX_LINE_LENGTH 80
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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 g_enable_compose;
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static BOOL keymap_loaded;
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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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static void update_modifier_state(uint8 scancode, BOOL pressed);
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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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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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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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keymap[keysym & KEYMAP_MASK].scancode = scancode;
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keymap[keysym & KEYMAP_MASK].modifiers = modifiers;
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return;
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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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strcpy(path, KEYMAP_PATH);
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strncat(path, mapname, sizeof(path) - sizeof(KEYMAP_PATH));
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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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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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/* 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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/* 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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line_length = strlen(line);
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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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/* 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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/* 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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/* 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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g_enable_compose = True;
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continue;
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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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/* 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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/* scancode */
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p++;
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scancode = strtol(p, &line_rest, 16);
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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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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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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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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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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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add_to_keymap(keyname, scancode, modifiers, mapname);
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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((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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fclose(fp);
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return True;
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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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/* 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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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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XDisplayKeycodes(display, &min_keycode, (int *) &max_keycode);
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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)
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|| get_key_state(state, XK_Control_R)))
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{
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/* Ctrl-Alt-Enter: toggle full screen */
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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;
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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));
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}
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/* No release sequence */
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return True;
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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);
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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);
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}
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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,
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0x1d, 0);
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}
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return True;
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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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case XK_space:
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/* Prevent access to the Windows system menu in single app mode */
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if (win_button_size
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&& (get_key_state(state, XK_Alt_L) || get_key_state(state, XK_Alt_R)))
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return True;
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}
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return False;
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}
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key_translation
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xkeymap_translate_key(uint32 keysym, unsigned int keycode, unsigned int state)
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{
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key_translation tr = { 0, 0 };
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tr = keymap[keysym & KEYMAP_MASK];
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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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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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if (tr.scancode != 0)
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{
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DEBUG_KBD(("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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if (keymap_loaded)
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warning("No translation for (keysym 0x%lx, %s)\n", keysym, get_ksname(keysym));
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/* not in keymap, try to interpret the raw scancode */
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if (((int) keycode >= min_keycode) && (keycode <= 0x60))
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{
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tr.scancode = keycode - min_keycode;
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/* The modifiers to send for this key should be
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obtained from the local state. Currently, only
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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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DEBUG_KBD(("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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DEBUG_KBD(("No good guess for keycode 0x%x found\n", keycode));
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}
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return tr;
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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;
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}
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return 0;
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}
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char *
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get_ksname(uint32 keysym)
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{
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char *ksname = NULL;
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if (keysym == NoSymbol)
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ksname = "NoSymbol";
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else if (!(ksname = XKeysymToString(keysym)))
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ksname = "(no name)";
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return ksname;
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}
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void
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ensure_remote_modifiers(uint32 ev_time, key_translation tr)
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{
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/* If this key is a modifier, do nothing */
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switch (tr.scancode)
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{
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case SCANCODE_CHAR_LSHIFT:
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case SCANCODE_CHAR_RSHIFT:
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case SCANCODE_CHAR_LCTRL:
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case SCANCODE_CHAR_RCTRL:
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case SCANCODE_CHAR_LALT:
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case SCANCODE_CHAR_RALT:
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case SCANCODE_CHAR_LWIN:
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case SCANCODE_CHAR_RWIN:
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case SCANCODE_CHAR_NUMLOCK:
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return;
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default:
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break;
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}
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/* NumLock */
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if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)
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!= MASK_HAS_BITS(remote_modifier_state, MapNumLockMask))
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{
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/* The remote modifier state is not correct */
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uint16 new_remote_state;
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if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask))
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{
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DEBUG_KBD(("Remote NumLock state is incorrect, activating NumLock.\n"));
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new_remote_state = KBD_FLAG_NUMLOCK;
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remote_modifier_state = MapNumLockMask;
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}
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else
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{
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DEBUG_KBD(("Remote NumLock state is incorrect, deactivating NumLock.\n"));
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new_remote_state = 0;
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remote_modifier_state = 0;
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}
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rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0, new_remote_state, 0);
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}
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/* Shift. Left shift and right shift are treated as equal; either is fine. */
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if (MASK_HAS_BITS(tr.modifiers, MapShiftMask)
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!= MASK_HAS_BITS(remote_modifier_state, MapShiftMask))
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{
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/* The remote modifier state is not correct */
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if (MASK_HAS_BITS(tr.modifiers, MapLeftShiftMask))
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{
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/* Needs left shift. Send down. */
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rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_LSHIFT);
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}
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else if (MASK_HAS_BITS(tr.modifiers, MapRightShiftMask))
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{
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/* Needs right shift. Send down. */
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rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RSHIFT);
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}
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else
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{
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/* Should not use this modifier. Send up for shift currently pressed. */
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if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask))
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/* Left shift is down */
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rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT);
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else
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/* Right shift is down */
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rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT);
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}
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}
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/* AltGr */
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if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask)
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!= MASK_HAS_BITS(remote_modifier_state, MapAltGrMask))
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{
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/* The remote modifier state is not correct */
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if (MASK_HAS_BITS(tr.modifiers, MapAltGrMask))
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{
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/* Needs this modifier. Send down. */
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rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_RALT);
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}
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else
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{
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/* Should not use this modifier. Send up. */
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rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT);
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}
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}
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}
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void
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reset_modifier_keys(unsigned int state)
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{
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/* reset keys */
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uint32 ev_time;
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ev_time = time(NULL);
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if (MASK_HAS_BITS(remote_modifier_state, MapLeftShiftMask)
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&& !get_key_state(state, XK_Shift_L))
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rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LSHIFT);
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if (MASK_HAS_BITS(remote_modifier_state, MapRightShiftMask)
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&& !get_key_state(state, XK_Shift_R))
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rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RSHIFT);
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if (MASK_HAS_BITS(remote_modifier_state, MapLeftCtrlMask)
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&& !get_key_state(state, XK_Control_L))
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rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LCTRL);
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if (MASK_HAS_BITS(remote_modifier_state, MapRightCtrlMask)
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&& !get_key_state(state, XK_Control_R))
|
|
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RCTRL);
|
|
|
|
if (MASK_HAS_BITS(remote_modifier_state, MapLeftAltMask) && !get_key_state(state, XK_Alt_L))
|
|
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_LALT);
|
|
|
|
if (MASK_HAS_BITS(remote_modifier_state, MapRightAltMask) &&
|
|
!get_key_state(state, XK_Alt_R) && !get_key_state(state, XK_Mode_switch))
|
|
rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_RALT);
|
|
}
|
|
|
|
|
|
static void
|
|
update_modifier_state(uint8 scancode, BOOL pressed)
|
|
{
|
|
#ifdef WITH_DEBUG_KBD
|
|
uint16 old_modifier_state;
|
|
|
|
old_modifier_state = remote_modifier_state;
|
|
#endif
|
|
|
|
switch (scancode)
|
|
{
|
|
case SCANCODE_CHAR_LSHIFT:
|
|
MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed);
|
|
break;
|
|
case SCANCODE_CHAR_RSHIFT:
|
|
MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed);
|
|
break;
|
|
case SCANCODE_CHAR_LCTRL:
|
|
MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed);
|
|
break;
|
|
case SCANCODE_CHAR_RCTRL:
|
|
MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed);
|
|
break;
|
|
case SCANCODE_CHAR_LALT:
|
|
MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed);
|
|
break;
|
|
case SCANCODE_CHAR_RALT:
|
|
MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed);
|
|
break;
|
|
case SCANCODE_CHAR_LWIN:
|
|
MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed);
|
|
break;
|
|
case SCANCODE_CHAR_RWIN:
|
|
MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed);
|
|
break;
|
|
case SCANCODE_CHAR_NUMLOCK:
|
|
/* KeyReleases for NumLocks are sent immediately. Toggle the
|
|
modifier state only on Keypress */
|
|
if (pressed)
|
|
{
|
|
BOOL newNumLockState;
|
|
newNumLockState =
|
|
(MASK_HAS_BITS
|
|
(remote_modifier_state, MapNumLockMask) == False);
|
|
MASK_CHANGE_BIT(remote_modifier_state,
|
|
MapNumLockMask, newNumLockState);
|
|
}
|
|
break;
|
|
}
|
|
|
|
#ifdef WITH_DEBUG_KBD
|
|
if (old_modifier_state != remote_modifier_state)
|
|
{
|
|
DEBUG_KBD(("Before updating modifier_state:0x%x, pressed=0x%x\n",
|
|
old_modifier_state, pressed));
|
|
DEBUG_KBD(("After updating modifier_state:0x%x\n", remote_modifier_state));
|
|
}
|
|
#endif
|
|
|
|
}
|
|
|
|
/* Send keyboard input */
|
|
void
|
|
rdp_send_scancode(uint32 time, uint16 flags, uint8 scancode)
|
|
{
|
|
update_modifier_state(scancode, !(flags & RDP_KEYRELEASE));
|
|
|
|
if (scancode & SCANCODE_EXTENDED)
|
|
{
|
|
DEBUG_KBD(("Sending extended scancode=0x%x, flags=0x%x\n",
|
|
scancode & ~SCANCODE_EXTENDED, flags));
|
|
rdp_send_input(time, RDP_INPUT_SCANCODE, flags | KBD_FLAG_EXT,
|
|
scancode & ~SCANCODE_EXTENDED, 0);
|
|
}
|
|
else
|
|
{
|
|
DEBUG_KBD(("Sending scancode=0x%x, flags=0x%x\n", scancode, flags));
|
|
rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0);
|
|
}
|
|
}
|