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/*
* Unix SMB/CIFS implementation.
* RPC Pipe client / server routines
* Copyright (C) Andrew Tridgell 1992-2000,
* Copyright (C) Jean François Micouleau 1998-2001.
*
* 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 "system/iconv.h"
#include "lib/samba3/samba3.h"
#include "lib/tdb/include/tdbutil.h"
#include "system/filesys.h"
#include "pstring.h"
#define DATABASE_VERSION_V1 1 /* native byte format. */
#define DATABASE_VERSION_V2 2 /* le format. */
#define GROUP_PREFIX "UNIXGROUP/"
/* Alias memberships are stored reverse, as memberships. The performance
* critical operation is to determine the aliases a SID is member of, not
* listing alias members. So we store a list of alias SIDs a SID is member of
* hanging of the member as key.
*/
#define MEMBEROF_PREFIX "MEMBEROF/"
/****************************************************************************
Open the group mapping tdb.
****************************************************************************/
NTSTATUS samba3_read_grouptdb(const char *file, TALLOC_CTX *ctx, struct samba3_groupdb *db)
{
int32_t vers_id;
TDB_DATA kbuf, dbuf, newkey;
int ret;
TDB_CONTEXT *tdb;
tdb = tdb_open(file, 0, TDB_DEFAULT, O_RDONLY, 0600);
if (!tdb) {
DEBUG(0,("Failed to open group mapping database\n"));
return NT_STATUS_UNSUCCESSFUL;
}
/* Cope with byte-reversed older versions of the db. */
vers_id = tdb_fetch_int32(tdb, "INFO/version");
if ((vers_id == DATABASE_VERSION_V1) || (IREV(vers_id) == DATABASE_VERSION_V1)) {
/* Written on a bigendian machine with old fetch_int code. Save as le. */
vers_id = DATABASE_VERSION_V2;
}
if (vers_id != DATABASE_VERSION_V2) {
DEBUG(0, ("Group database version mismatch: %d\n", vers_id));
return NT_STATUS_UNSUCCESSFUL;
}
db->groupmappings = NULL;
db->groupmap_count = 0;
db->aliases = NULL;
db->alias_count = 0;
for (kbuf = tdb_firstkey(tdb);
kbuf.dptr;
newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
struct samba3_groupmapping map;
if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) == 0)
{
dbuf = tdb_fetch(tdb, kbuf);
if (!dbuf.dptr)
continue;
ZERO_STRUCT(map);
map.sid = dom_sid_parse_talloc(ctx, kbuf.dptr+strlen(GROUP_PREFIX));
ret = tdb_unpack(tdb, dbuf.dptr, dbuf.dsize, "dd",
&map.gid, &map.sid_name_use);
if ( ret == -1 ) {
DEBUG(3,("enum_group_mapping: tdb_unpack failure\n"));
continue;
}
map.nt_name = talloc_strdup(ctx, dbuf.dptr+ret);
map.comment = talloc_strdup(ctx, dbuf.dptr+ret+strlen(map.nt_name));
db->groupmappings = talloc_realloc(ctx, db->groupmappings, struct samba3_groupmapping, db->groupmap_count+1);
if (!db->groupmappings)
return NT_STATUS_NO_MEMORY;
db->groupmappings[db->groupmap_count] = map;
db->groupmap_count++;
} else if (strncmp(kbuf.dptr, MEMBEROF_PREFIX, strlen(MEMBEROF_PREFIX)) == 0)
{
struct samba3_alias alias;
pstring alias_string;
const char *p;
dbuf = tdb_fetch(tdb, kbuf);
if (!dbuf.dptr)
continue;
alias.sid = dom_sid_parse_talloc(ctx, kbuf.dptr+strlen(MEMBEROF_PREFIX));
alias.member_count = 0;
alias.members = NULL;
p = dbuf.dptr;
while (next_token(&p, alias_string, " ", sizeof(alias_string))) {
alias.members = talloc_realloc(ctx, alias.members, struct dom_sid *, alias.member_count+1);
alias.members[alias.member_count] = dom_sid_parse_talloc(ctx, alias_string);
alias.member_count++;
}
db->aliases = talloc_realloc(ctx, db->aliases, struct samba3_alias, db->alias_count+1);
db->aliases[db->alias_count] = alias;
db->alias_count++;
}
}
tdb_close(tdb);
return NT_STATUS_OK;
}
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