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/*
Unix SMB/CIFS mplementation.
DSDB replication service - FSMO role change
Copyright (C) Nadezhda Ivanova 2010
Copyright (C) Andrew Tridgell 2010
Copyright (C) Andrew Bartlett 2010
Copyright (C) Anatoliy Atanasov 2010
based on drepl_ridalloc.c
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "dsdb/samdb/samdb.h"
#include "smbd/service.h"
#include "dsdb/repl/drepl_service.h"
#include "param/param.h"
struct fsmo_role_state {
struct irpc_message *msg;
struct drepl_takeFSMORole *r;
};
static void drepl_role_callback(struct dreplsrv_service *service,
WERROR werr,
enum drsuapi_DsExtendedError ext_err,
void *cb_data)
{
struct fsmo_role_state *fsmo = talloc_get_type_abort(cb_data, struct fsmo_role_state);
if (!W_ERROR_IS_OK(werr)) {
DEBUG(2,(__location__ ": Failed role transfer - %s - extended_ret[0x%X]\n",
win_errstr(werr), ext_err));
} else {
DEBUG(2,(__location__ ": Successful role transfer\n"));
}
fsmo->r->out.result = werr;
irpc_send_reply(fsmo->msg, NT_STATUS_OK);
}
static bool fsmo_master_equal(struct ldb_dn *ntds_dn, struct ldb_dn *role_owner_dn)
{
if (ldb_dn_compare(ntds_dn, role_owner_dn) == 0) {
DEBUG(0,("\nWe are the FSMO master.\n"));
return true;
}
return false;
}
/*
see which role is we are asked to assume, initialize data and send request
*/
NTSTATUS drepl_take_FSMO_role(struct irpc_message *msg,
struct drepl_takeFSMORole *r)
{
struct dreplsrv_service *service = talloc_get_type(msg->private_data,
struct dreplsrv_service);
struct ldb_dn *role_owner_dn, *fsmo_role_dn, *ntds_dn;
TALLOC_CTX *tmp_ctx = talloc_new(service);
uint64_t fsmo_info = 0;
enum drsuapi_DsExtendedOperation extended_op = DRSUAPI_EXOP_NONE;
WERROR werr;
enum drepl_role_master role = r->in.role;
struct fsmo_role_state *fsmo;
ntds_dn = samdb_ntds_settings_dn(service->samdb);
if (!ntds_dn) {
r->out.result = WERR_DS_DRA_INTERNAL_ERROR;
return NT_STATUS_OK;
}
werr = dsdb_get_fsmo_role_info(tmp_ctx, service->samdb, role,
&fsmo_role_dn, &role_owner_dn);
if (!W_ERROR_IS_OK(werr)) {
r->out.result = werr;
return NT_STATUS_OK;
}
switch (role) {
case DREPL_NAMING_MASTER:
case DREPL_INFRASTRUCTURE_MASTER:
case DREPL_SCHEMA_MASTER:
extended_op = DRSUAPI_EXOP_FSMO_REQ_ROLE;
break;
case DREPL_RID_MASTER:
extended_op = DRSUAPI_EXOP_FSMO_RID_REQ_ROLE;
break;
case DREPL_PDC_MASTER:
extended_op = DRSUAPI_EXOP_FSMO_REQ_PDC;
break;
default:
DEBUG(2,("Unknown role %u in role transfer\n",
(unsigned)role));
r->out.result = WERR_DS_DRA_INTERNAL_ERROR;
return NT_STATUS_OK;
}
if (fsmo_master_equal(ntds_dn, role_owner_dn) ||
(extended_op == DRSUAPI_EXOP_NONE)) {
DEBUG(0,("FSMO role check failed for DN %s and owner %s ",
ldb_dn_get_linearized(fsmo_role_dn),
ldb_dn_get_linearized(role_owner_dn)));
r->out.result = WERR_OK;
return NT_STATUS_OK;
}
fsmo = talloc(msg, struct fsmo_role_state);
NT_STATUS_HAVE_NO_MEMORY(fsmo);
fsmo->msg = msg;
fsmo->r = r;
werr = drepl_request_extended_op(service,
fsmo_role_dn,
role_owner_dn,
extended_op,
fsmo_info,
0,
drepl_role_callback,
fsmo);
if (!W_ERROR_IS_OK(werr)) {
r->out.result = werr;
return NT_STATUS_OK;
}
/* mark this message to be answered later */
msg->defer_reply = true;
dreplsrv_run_pending_ops(service);
return NT_STATUS_OK;
}
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