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/*
* Unix SMB/CIFS implementation.
*
* Copyright (C) Volker Lendecke, 2005
* Copyright (C) Aravind Srinivasan, 2009
* Copyright (C) Guenter Kukkukk, 2013
* Copyright (C) Ralph Boehme, 2017
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "smbd/smbd.h"
#include "string_replace.h"
#include "lib/util/string_wrappers.h"
#define MAP_SIZE 0xFF
#define MAP_NUM 0x101 /* max unicode charval / MAP_SIZE */
#define T_OFFSET(_v_) ((_v_ % MAP_SIZE))
#define T_START(_v_) (((_v_ / MAP_SIZE) * MAP_SIZE))
#define T_PICK(_v_) ((_v_ / MAP_SIZE))
struct char_mappings {
smb_ucs2_t entry[MAP_SIZE][2];
};
static bool build_table(struct char_mappings **cmaps, int value)
{
int i;
int start = T_START(value);
(*cmaps) = talloc_zero(NULL, struct char_mappings);
if (!*cmaps)
return False;
for (i = 0; i < MAP_SIZE;i++) {
(*cmaps)->entry[i][vfs_translate_to_unix] = start + i;
(*cmaps)->entry[i][vfs_translate_to_windows] = start + i;
}
return True;
}
static void set_tables(struct char_mappings **cmaps,
long unix_map,
long windows_map)
{
int i;
/* set unix -> windows */
i = T_OFFSET(unix_map);
cmaps[T_PICK(unix_map)]->entry[i][vfs_translate_to_windows] = windows_map;
/* set windows -> unix */
i = T_OFFSET(windows_map);
cmaps[T_PICK(windows_map)]->entry[i][vfs_translate_to_unix] = unix_map;
}
static bool build_ranges(struct char_mappings **cmaps,
long unix_map,
long windows_map)
{
if (!cmaps[T_PICK(unix_map)]) {
if (!build_table(&cmaps[T_PICK(unix_map)], unix_map))
return False;
}
if (!cmaps[T_PICK(windows_map)]) {
if (!build_table(&cmaps[T_PICK(windows_map)], windows_map))
return False;
}
set_tables(cmaps, unix_map, windows_map);
return True;
}
struct char_mappings **string_replace_init_map(TALLOC_CTX *mem_ctx,
const char **mappings)
{
int i;
char *tmp;
fstring mapping;
long unix_map, windows_map;
struct char_mappings **cmaps = NULL;
if (mappings == NULL) {
return NULL;
}
cmaps = talloc_zero_array(mem_ctx, struct char_mappings *, MAP_NUM);
if (cmaps == NULL) {
return NULL;
}
/*
* catia mappings are of the form :
* UNIX char (in 0xnn hex) : WINDOWS char (in 0xnn hex)
*
* multiple mappings are comma separated in smb.conf
*/
for (i = 0; mappings[i]; i++) {
fstrcpy(mapping, mappings[i]);
unix_map = strtol(mapping, &tmp, 16);
if (unix_map == 0 && errno == EINVAL) {
DEBUG(0, ("INVALID CATIA MAPPINGS - %s\n", mapping));
continue;
}
windows_map = strtol(++tmp, NULL, 16);
if (windows_map == 0 && errno == EINVAL) {
DEBUG(0, ("INVALID CATIA MAPPINGS - %s\n", mapping));
continue;
}
if (!build_ranges(cmaps, unix_map, windows_map)) {
DEBUG(0, ("TABLE ERROR - CATIA MAPPINGS - %s\n", mapping));
continue;
}
}
return cmaps;
}
NTSTATUS string_replace_allocate(connection_struct *conn,
const char *name_in,
struct char_mappings **cmaps,
TALLOC_CTX *mem_ctx,
char **mapped_name,
enum vfs_translate_direction direction)
{
static smb_ucs2_t *tmpbuf = NULL;
smb_ucs2_t *ptr = NULL;
struct char_mappings *map = NULL;
size_t converted_size;
bool ok;
ok = push_ucs2_talloc(talloc_tos(), &tmpbuf, name_in,
&converted_size);
if (!ok) {
return map_nt_error_from_unix(errno);
}
for (ptr = tmpbuf; *ptr; ptr++) {
if (*ptr == 0) {
break;
}
if (cmaps == NULL) {
continue;
}
map = cmaps[T_PICK((*ptr))];
if (map == NULL) {
/* nothing to do */
continue;
}
*ptr = map->entry[T_OFFSET((*ptr))][direction];
}
ok = pull_ucs2_talloc(mem_ctx, mapped_name, tmpbuf,
&converted_size);
TALLOC_FREE(tmpbuf);
if (!ok) {
return map_nt_error_from_unix(errno);
}
return NT_STATUS_OK;
}
const char *macos_string_replace_map =
"0x01:0xf001,0x02:0xf002,0x03:0xf003,0x04:0xf004,"
"0x05:0xf005,0x06:0xf006,0x07:0xf007,0x08:0xf008,"
"0x09:0xf009,0x0a:0xf00a,0x0b:0xf00b,0x0c:0xf00c,"
"0x0d:0xf00d,0x0e:0xf00e,0x0f:0xf00f,0x10:0xf010,"
"0x11:0xf011,0x12:0xf012,0x13:0xf013,0x14:0xf014,"
"0x15:0xf015,0x16:0xf016,0x17:0xf017,0x18:0xf018,"
"0x19:0xf019,0x1a:0xf01a,0x1b:0xf01b,0x1c:0xf01c,"
"0x1d:0xf01d,0x1e:0xf01e,0x1f:0xf01f,"
"0x22:0xf020,0x2a:0xf021,0x3a:0xf022,0x3c:0xf023,"
"0x3e:0xf024,0x3f:0xf025,0x5c:0xf026,0x7c:0xf027";
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