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/*
* Unix SMB/CIFS implementation.
* Virtual Windows Registry Layer
* Copyright (C) Gerald Carter 2002-2005
* 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.
*/
/* Implementation of internal registry database functions. */
#include "includes.h"
#include "lib/samba3/samba3.h"
#include "librpc/gen_ndr/winreg.h"
#include "lib/tdb/include/tdbutil.h"
#include "system/filesys.h"
#include "pstring.h"
#define VALUE_PREFIX "SAMBA_REGVAL"
#define REGVER_V1 1 /* first db version with write support */
/****************************************************************************
Unpack a list of registry values from the TDB
***************************************************************************/
static int regdb_unpack_values(TDB_CONTEXT *tdb, TALLOC_CTX *ctx, struct samba3_regkey *key, TDB_DATA data )
{
int len = 0;
uint32_t type;
uint32_t size;
uint8_t *data_p;
uint32_t num_values = 0;
int i;
fstring valuename;
/* loop and unpack the rest of the registry values */
len += tdb_unpack(tdb, (char *)data.dptr+len, data.dsize-len, "d", &num_values);
for ( i=0; i<num_values; i++ ) {
struct samba3_regval val;
/* unpack the next regval */
type = REG_NONE;
size = 0;
data_p = NULL;
len += tdb_unpack(tdb, (char *)data.dptr+len, data.dsize-len, "fdB",
valuename,
&val.type,
&size,
&data_p);
val.name = talloc_strdup(ctx, valuename);
val.data = data_blob_talloc(ctx, data_p, size);
key->values = talloc_realloc(ctx, key->values, struct samba3_regval, key->value_count+1);
key->values[key->value_count] = val;
key->value_count++;
}
return len;
}
/***********************************************************************
Open the registry database
***********************************************************************/
NTSTATUS samba3_read_regdb ( const char *fn, TALLOC_CTX *ctx, struct samba3_regdb *db )
{
uint32_t vers_id;
TDB_CONTEXT *tdb;
TDB_DATA kbuf, vbuf;
/* placeholder tdb; reinit upon startup */
if ( !(tdb = tdb_open(fn, 0, TDB_DEFAULT, O_RDONLY, 0600)) )
{
DEBUG(0, ("Unable to open registry database %s\n", fn));
return NT_STATUS_UNSUCCESSFUL;
}
vers_id = tdb_fetch_int32(tdb, "INFO/version");
db->key_count = 0;
db->keys = NULL;
if (vers_id != -1 && vers_id >= REGVER_V1) {
DEBUG(0, ("Registry version mismatch: %d\n", vers_id));
return NT_STATUS_UNSUCCESSFUL;
}
for (kbuf = tdb_firstkey(tdb); kbuf.dptr; kbuf = tdb_nextkey(tdb, kbuf))
{
uint32_t len;
int i;
struct samba3_regkey key;
char *skey;
if (strncmp((char *)kbuf.dptr, VALUE_PREFIX, strlen(VALUE_PREFIX)) == 0)
continue;
vbuf = tdb_fetch(tdb, kbuf);
key.name = talloc_strdup(ctx, (char *)kbuf.dptr);
len = tdb_unpack(tdb, (char *)vbuf.dptr, vbuf.dsize, "d", &key.subkey_count);
key.value_count = 0;
key.values = NULL;
key.subkeys = talloc_array(ctx, char *, key.subkey_count);
for (i = 0; i < key.subkey_count; i++) {
fstring tmp;
len += tdb_unpack( tdb, (char *)vbuf.dptr+len, vbuf.dsize-len, "f", tmp );
key.subkeys[i] = talloc_strdup(ctx, tmp);
}
skey = talloc_asprintf(ctx, "%s/%s", VALUE_PREFIX, kbuf.dptr );
vbuf = tdb_fetch_bystring( tdb, skey );
if ( vbuf.dptr ) {
regdb_unpack_values( tdb, ctx, &key, vbuf );
}
db->keys = talloc_realloc(ctx, db->keys, struct samba3_regkey, db->key_count+1);
db->keys[db->key_count] = key;
db->key_count++;
}
tdb_close(tdb);
return NT_STATUS_OK;
}
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