| 1 |
/* |
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rdesktop: A Remote Desktop Protocol client. |
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User interface services - X keyboard mapping |
| 4 |
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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#include <X11/keysym.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <ctype.h> |
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#include <limits.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 |
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#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 |
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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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add_to_keymap(keyname, scancode, modifiers, mapname); |
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|
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if (strstr(line_rest, "addupper")) |
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{ |
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/* Automatically add uppercase key, with same modifiers |
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plus shift */ |
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for (p = keyname; *p; p++) |
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*p = toupper(*p); |
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MASK_ADD_BITS(modifiers, MapLeftShiftMask); |
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add_to_keymap(keyname, scancode, modifiers, mapname); |
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} |
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} |
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|
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fclose(fp); |
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return True; |
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} |
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|
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|
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/* Before connecting and creating UI */ |
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void |
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xkeymap_init1(void) |
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{ |
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int i; |
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|
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/* Zeroing keymap */ |
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for (i = 0; i < KEYMAP_SIZE; i++) |
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{ |
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keymap[i].scancode = 0; |
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keymap[i].modifiers = 0; |
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} |
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|
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if (strcmp(keymapname, "none")) |
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{ |
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xkeymap_read(keymapname); |
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} |
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|
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} |
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|
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/* After connecting and creating UI */ |
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void |
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xkeymap_init2(void) |
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{ |
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unsigned int max_keycode; |
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XDisplayKeycodes(display, &min_keycode, (int *) &max_keycode); |
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} |
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|
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|
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key_translation |
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xkeymap_translate_key(KeySym keysym, unsigned int keycode, unsigned int state) |
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{ |
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key_translation tr = { 0, 0 }; |
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|
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tr = keymap[keysym & KEYMAP_MASK]; |
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|
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if (tr.modifiers & MapLocalStateMask) |
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{ |
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/* The modifiers to send for this key should be obtained |
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from the local state. Currently, only shift is implemented. */ |
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if (state & ShiftMask) |
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{ |
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tr.modifiers = MapLeftShiftMask; |
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} |
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} |
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|
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if (tr.scancode != 0) |
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{ |
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DEBUG_KBD |
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(("Found key translation, scancode=0x%x, modifiers=0x%x\n", |
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tr.scancode, tr.modifiers)); |
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return tr; |
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} |
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|
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fprintf(stderr, "No translation for (keysym 0x%lx, %s)\n", keysym, get_ksname(keysym)); |
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|
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/* not in keymap, try to interpret the raw scancode */ |
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if ((keycode >= min_keycode) && (keycode <= 0x60)) |
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{ |
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tr.scancode = keycode - min_keycode; |
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fprintf(stderr, "Sending guessed scancode 0x%x\n", tr.scancode); |
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} |
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else |
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{ |
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fprintf(stderr, "No good guess for keycode 0x%x found\n", keycode); |
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} |
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|
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return tr; |
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} |
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|
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uint16 |
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xkeymap_translate_button(unsigned int button) |
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{ |
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switch (button) |
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{ |
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case Button1: /* left */ |
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return MOUSE_FLAG_BUTTON1; |
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case Button2: /* middle */ |
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return MOUSE_FLAG_BUTTON3; |
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case Button3: /* right */ |
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return MOUSE_FLAG_BUTTON2; |
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case Button4: /* wheel up */ |
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return MOUSE_FLAG_BUTTON4; |
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case Button5: /* wheel down */ |
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return MOUSE_FLAG_BUTTON5; |
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} |
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|
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return 0; |
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} |
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|
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char * |
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get_ksname(KeySym keysym) |
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{ |
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char *ksname = NULL; |
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|
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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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|
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return ksname; |
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} |
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|
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BOOL |
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inhibit_key(KeySym keysym) |
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{ |
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switch (keysym) |
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{ |
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case XK_Caps_Lock: |
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return True; |
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break; |
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case XK_Multi_key: |
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return True; |
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break; |
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default: |
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break; |
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} |
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return False; |
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} |
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|
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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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|
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/* Shift */ |
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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, MapShiftMask)) |
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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_LSHIFT); |
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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_LSHIFT); |
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} |
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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); |
| 367 |
} |
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} |
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|
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/* NumLock */ |
| 371 |
if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask) |
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!= MASK_HAS_BITS(remote_modifier_state, MapNumLockMask)) |
| 373 |
{ |
| 374 |
/* The remote modifier state is not correct */ |
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DEBUG_KBD(("Remote NumLock state is incorrect. Toggling\n")); |
| 376 |
if (MASK_HAS_BITS(tr.modifiers, MapNumLockMask)) |
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{ |
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/* Needs this modifier. Toggle */ |
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rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_NUMLOCK); |
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rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_NUMLOCK); |
| 381 |
} |
| 382 |
else |
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{ |
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/* Should not use this modifier. Toggle */ |
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rdp_send_scancode(ev_time, RDP_KEYPRESS, SCANCODE_CHAR_NUMLOCK); |
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rdp_send_scancode(ev_time, RDP_KEYRELEASE, SCANCODE_CHAR_NUMLOCK); |
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} |
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} |
| 389 |
|
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} |
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|
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|
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static void |
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update_modifier_state(uint16 modifiers, BOOL pressed) |
| 395 |
{ |
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|
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DEBUG_KBD(("Before updating modifier_state:0x%x, pressed=0x%x\n", |
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remote_modifier_state, pressed)); |
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switch (modifiers) |
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{ |
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case SCANCODE_CHAR_LSHIFT: |
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MASK_CHANGE_BIT(remote_modifier_state, MapLeftShiftMask, pressed); |
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break; |
| 404 |
case SCANCODE_CHAR_RSHIFT: |
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MASK_CHANGE_BIT(remote_modifier_state, MapRightShiftMask, pressed); |
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break; |
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case SCANCODE_CHAR_LCTRL: |
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MASK_CHANGE_BIT(remote_modifier_state, MapLeftCtrlMask, pressed); |
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break; |
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case SCANCODE_CHAR_RCTRL: |
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MASK_CHANGE_BIT(remote_modifier_state, MapRightCtrlMask, pressed); |
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break; |
| 413 |
case SCANCODE_CHAR_LALT: |
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MASK_CHANGE_BIT(remote_modifier_state, MapLeftAltMask, pressed); |
| 415 |
break; |
| 416 |
case SCANCODE_CHAR_RALT: |
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MASK_CHANGE_BIT(remote_modifier_state, MapRightAltMask, pressed); |
| 418 |
break; |
| 419 |
case SCANCODE_CHAR_LWIN: |
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MASK_CHANGE_BIT(remote_modifier_state, MapLeftWinMask, pressed); |
| 421 |
break; |
| 422 |
case SCANCODE_CHAR_RWIN: |
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MASK_CHANGE_BIT(remote_modifier_state, MapRightWinMask, pressed); |
| 424 |
break; |
| 425 |
case SCANCODE_CHAR_NUMLOCK: |
| 426 |
/* KeyReleases for NumLocks are sent immediately. Toggle the |
| 427 |
modifier state only on Keypress */ |
| 428 |
if (pressed) |
| 429 |
{ |
| 430 |
BOOL newNumLockState; |
| 431 |
newNumLockState = |
| 432 |
(MASK_HAS_BITS |
| 433 |
(remote_modifier_state, MapNumLockMask) == False); |
| 434 |
MASK_CHANGE_BIT(remote_modifier_state, |
| 435 |
MapNumLockMask, newNumLockState); |
| 436 |
} |
| 437 |
break; |
| 438 |
} |
| 439 |
DEBUG_KBD(("After updating modifier_state:0x%x\n", remote_modifier_state)); |
| 440 |
|
| 441 |
} |
| 442 |
|
| 443 |
/* Send keyboard input */ |
| 444 |
void |
| 445 |
rdp_send_scancode(uint32 time, uint16 flags, uint16 scancode) |
| 446 |
{ |
| 447 |
update_modifier_state(scancode, !(flags & RDP_KEYRELEASE)); |
| 448 |
|
| 449 |
if (scancode & SCANCODE_EXTENDED) |
| 450 |
{ |
| 451 |
DEBUG_KBD(("Sending extended scancode=0x%x, flags=0x%x\n", |
| 452 |
scancode & ~SCANCODE_EXTENDED, flags)); |
| 453 |
rdp_send_input(time, RDP_INPUT_SCANCODE, flags | KBD_FLAG_EXT, |
| 454 |
scancode & ~SCANCODE_EXTENDED, 0); |
| 455 |
} |
| 456 |
else |
| 457 |
{ |
| 458 |
DEBUG_KBD(("Sending scancode=0x%x, flags=0x%x\n", scancode, flags)); |
| 459 |
rdp_send_input(time, RDP_INPUT_SCANCODE, flags, scancode, 0); |
| 460 |
} |
| 461 |
} |
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