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/*
Unix SMB/CIFS implementation.
idmap TDB backend
Copyright (C) Tim Potter 2000
Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
Copyright (C) Simo Sorce 2003
Copyright (C) Jelmer Vernooij 2005
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "lib/tdb/include/tdb.h"
#include "lib/util/util_tdb.h"
#include "lib/samba3/samba3.h"
#include "system/filesys.h"
#include "libcli/security/security.h"
/* High water mark keys */
#define HWM_GROUP "GROUP HWM"
#define HWM_USER "USER HWM"
/* idmap version determines auto-conversion */
#define IDMAP_VERSION 2
/*****************************************************************************
Initialise idmap database.
*****************************************************************************/
NTSTATUS samba3_read_idmap(const char *fn, TALLOC_CTX *ctx, struct samba3_idmapdb *idmap)
{
TDB_CONTEXT *tdb;
TDB_DATA key, val;
int32_t version;
/* Open idmap repository */
if (!(tdb = tdb_open(fn, 0, TDB_DEFAULT, O_RDONLY, 0644))) {
DEBUG(0, ("idmap_init: Unable to open idmap database '%s'\n", fn));
return NT_STATUS_UNSUCCESSFUL;
}
idmap->mapping_count = 0;
idmap->mappings = NULL;
idmap->user_hwm = tdb_fetch_int32(tdb, HWM_USER);
idmap->group_hwm = tdb_fetch_int32(tdb, HWM_GROUP);
/* check against earlier versions */
version = tdb_fetch_int32(tdb, "IDMAP_VERSION");
if (version != IDMAP_VERSION) {
DEBUG(0, ("idmap_init: Unable to open idmap database, it's in an old format!\n"));
return NT_STATUS_INTERNAL_DB_ERROR;
}
for (key = tdb_firstkey(tdb); key.dptr; key = tdb_nextkey(tdb, key))
{
struct samba3_idmap_mapping map;
const char *k = (const char *)key.dptr;
const char *v;
if (strncmp(k, "GID ", 4) == 0) {
map.type = IDMAP_GROUP;
map.unix_id = atoi(k+4);
val = tdb_fetch(tdb, key);
v = (const char *)val.dptr;
map.sid = dom_sid_parse_talloc(ctx, v);
} else if (strncmp(k, "UID ", 4) == 0) {
map.type = IDMAP_USER;
map.unix_id = atoi(k+4);
val = tdb_fetch(tdb, key);
v = (const char *)val.dptr;
map.sid = dom_sid_parse_talloc(ctx, v);
} else {
continue;
}
idmap->mappings = talloc_realloc(ctx, idmap->mappings, struct samba3_idmap_mapping, idmap->mapping_count+1);
idmap->mappings[idmap->mapping_count] = map;
idmap->mapping_count++;
}
tdb_close(tdb);
return NT_STATUS_OK;
}
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