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samba-mirror/source3/winbindd/wb_lookupname.c
Volker Lendecke 9c2fcb689b s3:winbind: Fork multiple children per domain
This makes us scale better with many simultaneous winbind requests,
some of which might be slow.

This implementation breaks offline logons, as the cached credentials are
maintained in a child (this needs fixing). So, if the offline logons are
active, only allow one DC connection.

Probably the offline logon and the scalable file server cases are
separate enough so that this patch is useful even with the restriction.
2011-01-21 13:51:27 +01:00

155 lines
4.2 KiB
C

/*
Unix SMB/CIFS implementation.
async lookupname
Copyright (C) Volker Lendecke 2009
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 "winbindd.h"
#include "librpc/gen_ndr/ndr_wbint_c.h"
#include "../libcli/security/security.h"
struct wb_lookupname_state {
struct tevent_context *ev;
const char *dom_name;
const char *name;
uint32_t flags;
struct dom_sid sid;
enum lsa_SidType type;
};
static void wb_lookupname_done(struct tevent_req *subreq);
static void wb_lookupname_root_done(struct tevent_req *subreq);
struct tevent_req *wb_lookupname_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
const char *dom_name, const char *name,
uint32_t flags)
{
struct tevent_req *req, *subreq;
struct wb_lookupname_state *state;
struct winbindd_domain *domain;
req = tevent_req_create(mem_ctx, &state, struct wb_lookupname_state);
if (req == NULL) {
return NULL;
}
state->ev = ev;
state->flags = flags;
/*
* Uppercase domain and name so that we become cache-friendly
*/
state->dom_name = talloc_strdup_upper(state, dom_name);
if (tevent_req_nomem(state->dom_name, req)) {
return tevent_req_post(req, ev);
}
state->name = talloc_strdup_upper(state, name);
if (tevent_req_nomem(state->name, req)) {
return tevent_req_post(req, ev);
}
domain = find_lookup_domain_from_name(state->dom_name);
if (domain == NULL) {
DEBUG(5, ("Could not find domain for %s\n", state->dom_name));
tevent_req_nterror(req, NT_STATUS_NONE_MAPPED);
return tevent_req_post(req, ev);
}
subreq = dcerpc_wbint_LookupName_send(
state, ev, dom_child_handle(domain),
state->dom_name, state->name,
flags, &state->type, &state->sid);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, wb_lookupname_done, req);
return req;
}
static void wb_lookupname_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_lookupname_state *state = tevent_req_data(
req, struct wb_lookupname_state);
struct winbindd_domain *root_domain;
NTSTATUS status, result;
status = dcerpc_wbint_LookupName_recv(subreq, state, &result);
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
return;
}
if (NT_STATUS_IS_OK(result)) {
tevent_req_done(req);
return;
}
/*
* "our" DC did not find it, lets retry with the forest root
* domain
*/
root_domain = find_root_domain();
if (root_domain == NULL) {
tevent_req_nterror(req, result);
return;
}
subreq = dcerpc_wbint_LookupName_send(
state, state->ev, dom_child_handle(root_domain),
state->dom_name,
state->name, state->flags, &state->type, &state->sid);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, wb_lookupname_root_done, req);
}
static void wb_lookupname_root_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_lookupname_state *state = tevent_req_data(
req, struct wb_lookupname_state);
NTSTATUS status, result;
status = dcerpc_wbint_LookupName_recv(subreq, state, &result);
TALLOC_FREE(subreq);
if (any_nt_status_not_ok(status, result, &status)) {
tevent_req_nterror(req, status);
return;
}
tevent_req_done(req);
}
NTSTATUS wb_lookupname_recv(struct tevent_req *req, struct dom_sid *sid,
enum lsa_SidType *type)
{
struct wb_lookupname_state *state = tevent_req_data(
req, struct wb_lookupname_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
return status;
}
sid_copy(sid, &state->sid);
*type = state->type;
return NT_STATUS_OK;
}