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/*
Unix SMB/Netbios implementation.
Version 3.0
Universal groups helpers
Copyright (C) Alexander Bokovoy 2002.
Copyright (C) Andrew Bartlett 2002.
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.
This work was sponsored by Optifacio Software Services, Inc.
*/
#include "includes.h"
/*
Handle for netlogon_unigrp.tdb database. It is used internally
in cli_store_uni_groups_*() and cli_fetch_uni_groups()
and is initialized on first call to cli_store_uni_groups_*()
*/
static TDB_CONTEXT *netlogon_unigrp_tdb = NULL;
/*
Store universal groups info into netlogon_unigrp.tdb for
later usage. We use 'domain_SID/user_rid' as key and
array of uint32 where array[0] is number of elements
and elements are array[1] ... array[array[0]]
*/
BOOL uni_group_cache_init(void)
{
if (!netlogon_unigrp_tdb) {
netlogon_unigrp_tdb = tdb_open_log(lock_path("netlogon_unigrp.tdb"), 0,
TDB_NOLOCK, O_RDWR | O_CREAT, 0644);
}
return (netlogon_unigrp_tdb != NULL);
}
void uni_group_cache_store_netlogon(TALLOC_CTX *mem_ctx, NET_USER_INFO_3 *user)
{
TDB_DATA key,data;
fstring keystr;
int i;
if (!uni_group_cache_init()) {
DEBUG(0,("uni_group_cache_store_netlogon: cannot open netlogon_unigrp.tdb for write!\n"));
return;
}
/* Prepare key as DOMAIN-SID/USER-RID string */
slprintf(keystr, sizeof(keystr), "%s/%d",
sid_string_static(&user->dom_sid.sid), user->user_rid);
key.dptr = keystr;
key.dsize = strlen(keystr) + 1;
/* Prepare data */
data.dsize = (user->num_groups2+1)*sizeof(uint32);
data.dptr = talloc(mem_ctx, data.dsize);
if(!data.dptr) {
DEBUG(0,("uni_group_cache_store_netlogon: cannot allocate memory!\n"));
talloc_destroy(mem_ctx);
return;
}
/* Store data in byteorder-independent format */
SIVAL(&((uint32*)data.dptr)[0],0,user->num_groups2);
for(i=1; i<=user->num_groups2; i++) {
SIVAL(&((uint32*)data.dptr)[i],0,user->gids[i-1].g_rid);
}
tdb_store(netlogon_unigrp_tdb, key, data, TDB_REPLACE);
}
/*
Fetch universal groups info from netlogon_unigrp.tdb for given
domain sid and user rid and allocate it using given mem_ctx.
Universal groups are returned as array of uint32 elements
and elements are array[0] ... array[num_elements-1]
*/
uint32* uni_group_cache_fetch(DOM_SID *domain, uint32 user_rid,
TALLOC_CTX *mem_ctx, uint32 *num_groups)
{
TDB_DATA key,data;
fstring keystr;
uint32 *groups;
uint32 i;
uint32 group_count;
if (!domain) {
DEBUG(1,("uni_group_cache_fetch: expected non-null domain sid\n"));
return NULL;
}
if (!mem_ctx) {
DEBUG(1,("uni_group_cache_fetch: expected non-null memory context\n"));
return NULL;
}
if (!num_groups) {
DEBUG(1,("uni_group_cache_fetch: expected non-null num_groups\n"));
return NULL;
}
if (!netlogon_unigrp_tdb) {
netlogon_unigrp_tdb = tdb_open_log(lock_path("netlogon_unigrp.tdb"), 0,
TDB_NOLOCK, O_RDWR, 0644);
}
if (!netlogon_unigrp_tdb) {
DEBUG(5,("uni_group_cache_fetch: cannot open netlogon_unigrp.tdb for read - normal if not created yet\n"));
return NULL;
}
*num_groups = 0;
/* Fetch universal groups */
slprintf(keystr, sizeof(keystr), "%s/%d",
sid_string_static(domain), user_rid);
key.dptr = keystr;
key.dsize = strlen(keystr) + 1;
data = tdb_fetch(netlogon_unigrp_tdb, key);
/* There is no cached universal groups in netlogon_unigrp.tdb */
/* for this user. */
if (!data.dptr) return NULL;
/* Transfer data to receiver's memory context */
group_count = IVAL(&((uint32*)data.dptr)[0],0);
groups = talloc(mem_ctx, (group_count)*sizeof(uint32));
if (groups) {
for(i=0; i<group_count; i++) {
groups[i] = IVAL(&((uint32*)data.dptr)[i+1],0);
}
} else {
DEBUG(1,("uni_group_cache_fetch: cannot allocate uni groups in receiver's memory context\n"));
}
SAFE_FREE(data.dptr);
*num_groups = group_count;
return groups;
}
/* Shutdown netlogon_unigrp database */
void uni_group_cache_shutdown(void)
{
if(netlogon_unigrp_tdb) {
tdb_close(netlogon_unigrp_tdb);
}
}
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