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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"
#define VALUE_PREFIX "SAMBA_REGVAL"
#define REGVER_V1 1 /* first db version with write support */
/***********************************************************************
Open the registry database
***********************************************************************/
static TDB_CONTEXT *samba3_open_registry ( const char *fn )
{
uint32_t vers_id;
/* placeholder tdb; reinit upon startup */
if ( !(tdb = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDONLY, 0600)) )
{
return NULL;
}
vers_id = tdb_fetch_int32(tdb, "INFO/version");
if (vers_id > REGVER_V1)
return NULL;
return True;
}
/***********************************************************************
Retrieve an array of strings containing subkeys. Memory should be
released by the caller.
***********************************************************************/
int regdb_fetch_keys( TDB_CONTEXT *tdb, const char* key, REGSUBKEY_CTR *ctr )
{
char *path;
uint32_t num_items;
TDB_DATA dbuf;
char *buf;
uint32_t buflen, len;
int i;
fstring subkeyname;
DEBUG(11,("regdb_fetch_keys: Enter key => [%s]\n", key ? key : "NULL"));
path = talloc_strdup(key);
/* convert to key format */
for ( i = 0; path[i]; i++) {
if ( path[i] == '\\' )
path[i] = '/';
}
strupper_m( path );
dbuf = tdb_fetch_bystring( tdb, path );
buf = dbuf.dptr;
buflen = dbuf.dsize;
if ( !buf ) {
DEBUG(5,("regdb_fetch_keys: tdb lookup failed to locate key [%s]\n", key));
return -1;
}
len = tdb_unpack( buf, buflen, "d", &num_items);
for (i=0; i<num_items; i++) {
len += tdb_unpack( buf+len, buflen-len, "f", subkeyname );
regsubkey_ctr_addkey( ctr, subkeyname );
}
SAFE_FREE( dbuf.dptr );
DEBUG(11,("regdb_fetch_keys: Exit [%d] items\n", num_items));
return num_items;
}
/****************************************************************************
Unpack a list of registry values frem the TDB
***************************************************************************/
static int regdb_unpack_values(REGVAL_CTR *values, char *buf, int buflen)
{
int len = 0;
uint32_t type;
char *valuename;
uint32_t size;
uint8_t *data_p;
uint32_t num_values = 0;
int i;
/* loop and unpack the rest of the registry values */
len += tdb_unpack(buf+len, buflen-len, "d", &num_values);
for ( i=0; i<num_values; i++ ) {
/* unpack the next regval */
type = REG_NONE;
size = 0;
data_p = NULL;
len += tdb_unpack(buf+len, buflen-len, "fdB",
valuename,
&type,
&size,
&data_p);
/* add the new value. Paranoid protective code -- make sure data_p is valid */
if ( size && data_p ) {
regval_ctr_addvalue( values, valuename, type, (const char *)data_p, size );
SAFE_FREE(data_p); /* 'B' option to tdb_unpack does a malloc() */
}
DEBUG(8,("specific: [%s], len: %d\n", valuename, size));
}
return len;
}
/***********************************************************************
Retrieve an array of strings containing subkeys. Memory should be
released by the caller.
***********************************************************************/
int regdb_fetch_values( TDB_CONTEXT *tdb, const char* key, REGVAL_CTR *values )
{
TDB_DATA data;
pstring keystr;
DEBUG(10,("regdb_fetch_values: Looking for value of key [%s] \n", key));
pstr_sprintf( keystr, "%s/%s", VALUE_PREFIX, key );
normalize_reg_path( keystr );
data = tdb_fetch_bystring( tdb, keystr );
if ( !data.dptr ) {
/* all keys have zero values by default */
return 0;
}
regdb_unpack_values( values, data.dptr, data.dsize );
SAFE_FREE( data.dptr );
return regval_ctr_numvals(values);
}
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