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/*
Unix SMB/CIFS implementation.
async sid2uid
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 "idmap_cache.h"
#include "../libcli/security/security.h"
struct wb_sid2uid_state {
struct tevent_context *ev;
struct dom_sid sid;
char *dom_name;
uint64 uid64;
uid_t uid;
};
static void wb_sid2uid_lookup_done(struct tevent_req *subreq);
static void wb_sid2uid_done(struct tevent_req *subreq);
struct tevent_req *wb_sid2uid_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
const struct dom_sid *sid)
{
struct tevent_req *req, *subreq;
struct wb_sid2uid_state *state;
bool expired;
req = tevent_req_create(mem_ctx, &state, struct wb_sid2uid_state);
if (req == NULL) {
return NULL;
}
sid_copy(&state->sid, sid);
state->ev = ev;
if (winbindd_use_idmap_cache()
&& idmap_cache_find_sid2uid(sid, &state->uid, &expired)) {
DEBUG(10, ("idmap_cache_find_sid2uid found %d%s\n",
(int)state->uid, expired ? " (expired)": ""));
if (!expired || is_domain_offline(find_our_domain())) {
if (state->uid == -1) {
tevent_req_nterror(req, NT_STATUS_NONE_MAPPED);
} else {
tevent_req_done(req);
}
return tevent_req_post(req, ev);
}
}
/*
* We need to make sure the sid is of the right type to not flood
* idmap with wrong entries
*/
subreq = wb_lookupsid_send(state, ev, &state->sid);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, wb_sid2uid_lookup_done, req);
return req;
}
static void wb_sid2uid_lookup_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_sid2uid_state *state = tevent_req_data(
req, struct wb_sid2uid_state);
struct winbindd_domain *domain;
const char *domname;
const char *name;
enum lsa_SidType type;
NTSTATUS status;
struct winbindd_child *child;
status = wb_lookupsid_recv(subreq, talloc_tos(), &type, &domname,
&name);
if (tevent_req_nterror(req, status)) {
return;
}
if ((type != SID_NAME_USER) && (type != SID_NAME_COMPUTER)) {
DEBUG(5, ("Sid %s is not a user or a computer.\n",
sid_string_dbg(&state->sid)));
/*
* We have to set the cache ourselves here, the child
* which is normally responsible was not queried yet.
*/
idmap_cache_set_sid2uid(&state->sid, -1);
tevent_req_nterror(req, NT_STATUS_INVALID_SID);
return;
}
domain = find_domain_from_sid_noinit(&state->sid);
/*
* TODO: Issue a gettrustinfo here in case we don't have "domain" yet?
*/
if ((domain != NULL) && domain->have_idmap_config) {
state->dom_name = domain->name;
} else {
state->dom_name = NULL;
}
child = idmap_child();
subreq = dcerpc_wbint_Sid2Uid_send(state, state->ev, child->binding_handle,
state->dom_name, &state->sid,
&state->uid64);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, wb_sid2uid_done, req);
}
static void wb_sid2uid_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_sid2uid_state *state = tevent_req_data(
req, struct wb_sid2uid_state);
NTSTATUS status, result;
status = dcerpc_wbint_Sid2Uid_recv(subreq, state, &result);
TALLOC_FREE(subreq);
if (any_nt_status_not_ok(status, result, &status)) {
tevent_req_nterror(req, status);
return;
}
state->uid = state->uid64;
tevent_req_done(req);
}
NTSTATUS wb_sid2uid_recv(struct tevent_req *req, uid_t *uid)
{
struct wb_sid2uid_state *state = tevent_req_data(
req, struct wb_sid2uid_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
return status;
}
*uid = state->uid;
return NT_STATUS_OK;
}
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