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/*
Unix SMB/CIFS implementation.
async gettoken
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"
#include "passdb/machine_sid.h"
struct wb_gettoken_state {
struct tevent_context *ev;
struct dom_sid usersid;
int num_sids;
struct dom_sid *sids;
};
static bool wb_add_rids_to_sids(TALLOC_CTX *mem_ctx,
int *pnum_sids, struct dom_sid **psids,
const struct dom_sid *domain_sid,
int num_rids, uint32_t *rids);
static void wb_gettoken_gotgroups(struct tevent_req *subreq);
static void wb_gettoken_gotlocalgroups(struct tevent_req *subreq);
static void wb_gettoken_gotbuiltins(struct tevent_req *subreq);
struct tevent_req *wb_gettoken_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
const struct dom_sid *sid)
{
struct tevent_req *req, *subreq;
struct wb_gettoken_state *state;
struct winbindd_domain *domain;
req = tevent_req_create(mem_ctx, &state, struct wb_gettoken_state);
if (req == NULL) {
return NULL;
}
sid_copy(&state->usersid, sid);
state->ev = ev;
domain = find_domain_from_sid_noinit(sid);
if (domain == NULL) {
DEBUG(5, ("Could not find domain from SID %s\n",
sid_string_dbg(sid)));
tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
return tevent_req_post(req, ev);
}
if (lp_winbind_trusted_domains_only() && domain->primary) {
DEBUG(7, ("wb_gettoken: My domain -- rejecting getgroups() "
"for %s.\n", sid_string_tos(sid)));
tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
return tevent_req_post(req, ev);
}
subreq = wb_lookupusergroups_send(state, ev, domain, &state->usersid);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, wb_gettoken_gotgroups, req);
return req;
}
static void wb_gettoken_gotgroups(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_gettoken_state *state = tevent_req_data(
req, struct wb_gettoken_state);
struct dom_sid *sids;
struct winbindd_domain *domain;
NTSTATUS status;
status = wb_lookupusergroups_recv(subreq, state, &state->num_sids,
&state->sids);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
sids = talloc_realloc(state, state->sids, struct dom_sid,
state->num_sids + 1);
if (tevent_req_nomem(sids, req)) {
return;
}
memmove(&sids[1], &sids[0], state->num_sids * sizeof(sids[0]));
sid_copy(&sids[0], &state->usersid);
state->num_sids += 1;
state->sids = sids;
/*
* Expand our domain's aliases
*/
domain = find_domain_from_sid_noinit(get_global_sam_sid());
if (domain == NULL) {
tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
return;
}
subreq = wb_lookupuseraliases_send(state, state->ev, domain,
state->num_sids, state->sids);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, wb_gettoken_gotlocalgroups, req);
}
static void wb_gettoken_gotlocalgroups(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_gettoken_state *state = tevent_req_data(
req, struct wb_gettoken_state);
uint32_t num_rids;
uint32_t *rids;
struct winbindd_domain *domain;
NTSTATUS status;
status = wb_lookupuseraliases_recv(subreq, state, &num_rids, &rids);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
domain = find_domain_from_sid_noinit(get_global_sam_sid());
if (domain == NULL) {
tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
return;
}
if (!wb_add_rids_to_sids(state, &state->num_sids, &state->sids,
&domain->sid, num_rids, rids)) {
tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
TALLOC_FREE(rids);
/*
* Now expand the builtin groups
*/
domain = find_builtin_domain();
if (domain == NULL) {
tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
return;
}
subreq = wb_lookupuseraliases_send(state, state->ev, domain,
state->num_sids, state->sids);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, wb_gettoken_gotbuiltins, req);
}
static void wb_gettoken_gotbuiltins(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_gettoken_state *state = tevent_req_data(
req, struct wb_gettoken_state);
uint32_t num_rids;
uint32_t *rids;
NTSTATUS status;
status = wb_lookupuseraliases_recv(subreq, state, &num_rids, &rids);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
if (!wb_add_rids_to_sids(state, &state->num_sids, &state->sids,
&global_sid_Builtin, num_rids, rids)) {
tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
tevent_req_done(req);
}
NTSTATUS wb_gettoken_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
int *num_sids, struct dom_sid **sids)
{
struct wb_gettoken_state *state = tevent_req_data(
req, struct wb_gettoken_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
return status;
}
*num_sids = state->num_sids;
*sids = talloc_move(mem_ctx, &state->sids);
return NT_STATUS_OK;
}
static bool wb_add_rids_to_sids(TALLOC_CTX *mem_ctx,
int *pnum_sids, struct dom_sid **psids,
const struct dom_sid *domain_sid,
int num_rids, uint32_t *rids)
{
struct dom_sid *sids;
int i;
sids = talloc_realloc(mem_ctx, *psids, struct dom_sid,
*pnum_sids + num_rids);
if (sids == NULL) {
return false;
}
for (i=0; i<num_rids; i++) {
sid_compose(&sids[i+*pnum_sids], domain_sid, rids[i]);
}
*pnum_sids += num_rids;
*psids = sids;
return true;
}
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