/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2014
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* keylayout
* maximum unicode 19996(0x4e00)
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include "xrdp.h"
#include "log.h"
/* map for rdp to x11 scancodes
code1 is regular scancode, code2 is extended scancode */
struct codepair
{
tui8 code1;
tui8 code2;
};
static struct codepair g_map[] =
{
{ 0, 0 }, { 9, 0 }, { 10, 0 }, { 11, 0 }, { 12, 0 }, /* 0 - 4 */
{ 13, 0 }, { 14, 0 }, { 15, 0 }, { 16, 0 }, { 17, 0 }, /* 5 - 9 */
{ 18, 0 }, { 19, 0 }, { 20, 0 }, { 21, 0 }, { 22, 0 }, /* 10 - 14 */
{ 23, 0 }, { 24, 0 }, { 25, 0 }, { 26, 0 }, { 27, 0 }, /* 15 - 19 */
{ 28, 0 }, { 29, 0 }, { 30, 0 }, { 31, 0 }, { 32, 0 }, /* 20 - 24 */
{ 33, 0 }, { 34, 0 }, { 35, 0 }, { 36, 108 }, { 37, 109 }, /* 25 - 29 */
{ 38, 0 }, { 39, 0 }, { 40, 0 }, { 41, 0 }, { 42, 0 }, /* 30 - 34 */
{ 43, 0 }, { 44, 0 }, { 45, 0 }, { 46, 0 }, { 47, 0 }, /* 35 - 39 */
{ 48, 0 }, { 49, 0 }, { 50, 0 }, { 51, 0 }, { 52, 0 }, /* 40 - 44 */
{ 53, 0 }, { 54, 0 }, { 55, 0 }, { 56, 0 }, { 57, 0 }, /* 45 - 49 */
{ 58, 0 }, { 59, 0 }, { 60, 0 }, { 61, 112 }, { 62, 0 }, /* 50 - 54 */
{ 63, 111 }, { 64, 113 }, { 65, 0 }, { 66, 0 }, { 67, 0 }, /* 55 - 59 */
{ 68, 0 }, { 69, 0 }, { 70, 0 }, { 71, 0 }, { 72, 0 }, /* 60 - 64 */
{ 73, 0 }, { 74, 0 }, { 75, 0 }, { 76, 0 }, { 77, 0 }, /* 65 - 69 */
{ 78, 0 }, { 79, 97 }, { 80, 98 }, { 81, 99 }, { 82, 0 }, /* 70 - 74 */
{ 83, 100 }, { 84, 0 }, { 85, 102 }, { 86, 0 }, { 87, 103 }, /* 75 - 79 */
{ 88, 104 }, { 89, 105 }, { 90, 106 }, { 91, 107 }, { 92, 0 }, /* 80 - 84 */
{ 93, 0 }, { 94, 0 }, { 95, 0 }, { 96, 0 }, { 97, 0 }, /* 85 - 89 */
{ 98, 0 }, { 0, 115 }, { 0, 116 }, { 0, 117 }, { 102, 0 }, /* 90 - 94 */
{ 103, 0 }, { 104, 0 }, { 105, 0 }, { 106, 0 }, { 107, 0 }, /* 95 - 99 */
{ 108, 0 }, { 109, 0 }, { 110, 0 }, { 111, 0 }, { 112, 0 }, /* 100 - 104 */
{ 113, 0 }, { 114, 0 }, { 115, 0 }, { 116, 0 }, { 117, 0 }, /* 105 - 109 */
{ 118, 0 }, { 119, 0 }, { 120, 0 }, { 121, 0 }, { 122, 0 }, /* 110 - 114 */
{ 123, 0 }, { 124, 0 }, { 125, 0 }, { 126, 0 }, { 127, 0 }, /* 115 - 119 */
{ 128, 0 }, { 129, 0 }, { 130, 0 }, { 131, 0 }, { 132, 0 }, /* 120 - 124 */
{ 133, 0 }, { 134, 0 }, { 135, 0 } /* 125 - 127 */
};
/*****************************************************************************/
struct xrdp_key_info *
get_key_info_from_scan_code(int device_flags, int scan_code, int *keys,
int caps_lock, int num_lock, int scroll_lock,
struct xrdp_keymap *keymap)
{
struct xrdp_key_info *rv;
int shift;
int altgr;
int ext;
int index;
ext = device_flags & KBD_FLAG_EXT; /* 0x0100 */
shift = keys[42] || keys[54];
altgr = keys[56] & KBD_FLAG_EXT; /* right alt */
rv = 0;
scan_code = scan_code & 0x7f;
index = ext ? g_map[scan_code].code2 : g_map[scan_code].code1;
/* keymap file is created with numlock off so we have to do this */
if ((index >= 79) && (index <= 91))
{
if (num_lock)
{
rv = &(keymap->keys_shift[index]);
}
else
{
rv = &(keymap->keys_noshift[index]);
}
}
else if (shift && caps_lock && altgr)
{
rv = &(keymap->keys_shiftcapslockaltgr[index]);
}
else if (shift && caps_lock)
{
rv = &(keymap->keys_shiftcapslock[index]);
}
else if (shift && altgr)
{
rv = &(keymap->keys_shiftaltgr[index]);
}
else if (shift)
{
rv = &(keymap->keys_shift[index]);
}
else if (caps_lock && altgr)
{
rv = &(keymap->keys_capslockaltgr[index]);
}
else if (caps_lock)
{
rv = &(keymap->keys_capslock[index]);
}
else if (altgr)
{
rv = &(keymap->keys_altgr[index]);
}
else
{
rv = &(keymap->keys_noshift[index]);
}
return rv;
}
/*****************************************************************************/
int
get_keysym_from_scan_code(int device_flags, int scan_code, int *keys,
int caps_lock, int num_lock, int scroll_lock,
struct xrdp_keymap *keymap)
{
struct xrdp_key_info *ki;
ki = get_key_info_from_scan_code(device_flags, scan_code, keys,
caps_lock, num_lock, scroll_lock,
keymap);
if (ki == 0)
{
return 0;
}
return ki->sym;
}
/*****************************************************************************/
twchar
get_char_from_scan_code(int device_flags, int scan_code, int *keys,
int caps_lock, int num_lock, int scroll_lock,
struct xrdp_keymap *keymap)
{
struct xrdp_key_info *ki;
ki = get_key_info_from_scan_code(device_flags, scan_code, keys,
caps_lock, num_lock, scroll_lock,
keymap);
if (ki == 0)
{
return 0;
}
return (twchar)(ki->chr);
}
/*****************************************************************************/
static int
km_read_section(int fd, const char *section_name, struct xrdp_key_info *keymap)
{
struct list *names;
struct list *values;
int index;
int code;
int pos1;
char *name;
char *value;
names = list_create();
names->auto_free = 1;
values = list_create();
values->auto_free = 1;
if (file_read_section(fd, section_name, names, values) == 0)
{
for (index = names->count - 1; index >= 0; index--)
{
name = (char *)list_get_item(names, index);
value = (char *)list_get_item(values, index);
if ((name != 0) && (value != 0))
{
if (g_strncasecmp(name, "key", 3) == 0)
{
code = g_atoi(name + 3);
}
else
{
code = g_atoi(name);
}
if ((code >= 0) && (code < 256))
{
pos1 = g_pos(value, ":");
if (pos1 >= 0)
{
keymap[code].chr = g_atoi(value + pos1 + 1);
}
keymap[code].sym = g_atoi(value);
}
}
}
}
list_delete(names);
list_delete(values);
return 0;
}
/*****************************************************************************/
int
get_keymaps(int keylayout, struct xrdp_keymap *keymap)
{
int fd;
int basic_key_layout = keylayout & 0x0000ffff;
char *filename;
struct xrdp_keymap *lkeymap;
filename = (char *)g_malloc(256, 0);
/* check if there is a keymap file e.g. km-e00100411.ini */
g_snprintf(filename, 255, "%s/km-%08x.ini", XRDP_CFG_PATH, keylayout);
/* if the file does not exist, use only lower 16 bits instead */
if (!g_file_exist(filename))
{
log_message(LOG_LEVEL_INFO, "Cannot find keymap file %s", filename);
/* e.g. km-00000411.ini */
g_snprintf(filename, 255, "%s/km-%08x.ini", XRDP_CFG_PATH, basic_key_layout);
}
/* finally, use 'en-us' */
if (!g_file_exist(filename))
{
log_message(LOG_LEVEL_INFO, "Cannot find keymap file %s", filename);
g_snprintf(filename, 255, "%s/km-00000409.ini", XRDP_CFG_PATH);
}
if (g_file_exist(filename))
{
fd = g_file_open(filename);
log_message(LOG_LEVEL_INFO, "Loading keymap file %s", filename);
if (fd != -1)
{
lkeymap = (struct xrdp_keymap *)g_malloc(sizeof(struct xrdp_keymap), 0);
/* make a copy of the built-in keymap */
g_memcpy(lkeymap, keymap, sizeof(struct xrdp_keymap));
/* clear the keymaps */
g_memset(keymap, 0, sizeof(struct xrdp_keymap));
/* read the keymaps */
km_read_section(fd, "noshift", keymap->keys_noshift);
km_read_section(fd, "shift", keymap->keys_shift);
km_read_section(fd, "altgr", keymap->keys_altgr);
km_read_section(fd, "shiftaltgr", keymap->keys_shiftaltgr);
km_read_section(fd, "capslock", keymap->keys_capslock);
km_read_section(fd, "capslockaltgr", keymap->keys_capslockaltgr);
km_read_section(fd, "shiftcapslock", keymap->keys_shiftcapslock);
km_read_section(fd, "shiftcapslockaltgr", keymap->keys_shiftcapslockaltgr);
if (g_memcmp(lkeymap, keymap, sizeof(struct xrdp_keymap)) != 0)
{
log_message(LOG_LEVEL_WARNING,
"local keymap file for 0x%08x found and doesn't match "
"built in keymap, using local keymap file", keylayout);
}
g_free(lkeymap);
g_file_close(fd);
}
}
else
{
log_message(LOG_LEVEL_WARNING, "File does not exist: %s", filename);
}
g_free(filename);
return 0;
}
