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/*
Unix SMB/CIFS implementation.
async implementation of WINBINDD_LIST_USERS
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_winbind_c.h"
#include "lib/util/strv.h"
struct winbindd_list_users_domstate {
struct tevent_req *subreq;
struct winbindd_domain *domain;
char *users;
};
struct winbindd_list_users_state {
size_t num_received;
/* All domains */
size_t num_domains;
struct winbindd_list_users_domstate *domains;
};
static void winbindd_list_users_done(struct tevent_req *subreq);
struct tevent_req *winbindd_list_users_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct winbindd_cli_state *cli,
struct winbindd_request *request)
{
struct tevent_req *req;
struct winbindd_list_users_state *state;
struct winbindd_domain *domain;
size_t i;
req = tevent_req_create(mem_ctx, &state,
struct winbindd_list_users_state);
if (req == NULL) {
return NULL;
}
D_NOTICE("[%s (%u)] Winbind external command LIST_USERS start.\n"
"WBFLAG_FROM_NSS is %s, winbind enum users is %d.\n",
cli->client_name,
(unsigned int)cli->pid,
request->wb_flags & WBFLAG_FROM_NSS ? "Set" : "Unset",
lp_winbind_enum_users());
if (request->wb_flags & WBFLAG_FROM_NSS && !lp_winbind_enum_users()) {
tevent_req_done(req);
return tevent_req_post(req, ev);
}
/* Ensure null termination */
request->domain_name[sizeof(request->domain_name)-1]='\0';
D_NOTICE("Listing users for domain %s\n", request->domain_name);
if (request->domain_name[0] != '\0') {
state->num_domains = 1;
} else {
state->num_domains = 0;
for (domain = domain_list(); domain; domain = domain->next) {
state->num_domains += 1;
}
}
state->domains = talloc_array(state,
struct winbindd_list_users_domstate,
state->num_domains);
if (tevent_req_nomem(state->domains, req)) {
return tevent_req_post(req, ev);
}
if (request->domain_name[0] != '\0') {
state->domains[0].domain = find_domain_from_name_noinit(
request->domain_name);
if (state->domains[0].domain == NULL) {
tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
return tevent_req_post(req, ev);
}
} else {
i = 0;
for (domain = domain_list(); domain; domain = domain->next) {
state->domains[i++].domain = domain;
}
}
for (i=0; i<state->num_domains; i++) {
struct winbindd_list_users_domstate *d = &state->domains[i];
/*
* Use "state" as a talloc memory context since it has type
* "struct tevent_req". This is needed to make tevent call depth
* tracking working as expected.
* After calling wb_query_user_list_send(), re-parent back to
* "state->domains" to make TALLOC_FREE(state->domains) working.
*/
d->subreq = wb_query_user_list_send(state, ev, d->domain);
d->subreq = talloc_reparent(state, state->domains, d->subreq);
if (tevent_req_nomem(d->subreq, req)) {
TALLOC_FREE(state->domains);
return tevent_req_post(req, ev);
}
tevent_req_set_callback(d->subreq, winbindd_list_users_done,
req);
}
state->num_received = 0;
return req;
}
static void winbindd_list_users_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct winbindd_list_users_state *state = tevent_req_data(
req, struct winbindd_list_users_state);
struct winbindd_list_users_domstate *d;
NTSTATUS status;
size_t i;
for (i=0; i<state->num_domains; i++) {
if (subreq == state->domains[i].subreq) {
break;
}
}
if (i == state->num_domains) {
tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
return;
}
d = &state->domains[i];
status = wb_query_user_list_recv(subreq, state->domains,
&d->users);
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
/*
* Just skip this domain
*/
d->users = NULL;
}
state->num_received += 1;
if (state->num_received >= state->num_domains) {
tevent_req_done(req);
}
}
NTSTATUS winbindd_list_users_recv(struct tevent_req *req,
struct winbindd_response *response)
{
struct winbindd_list_users_state *state = tevent_req_data(
req, struct winbindd_list_users_state);
NTSTATUS status;
char *result;
size_t i, len;
D_NOTICE("Winbind external command LIST_USERS end.\n");
if (tevent_req_is_nterror(req, &status)) {
D_WARNING("Failed with %s.\n", nt_errstr(status));
return status;
}
result = NULL;
for (i=0; i<state->num_domains; i++) {
struct winbindd_list_users_domstate *d = &state->domains[i];
int ret;
if (d->users == NULL) {
continue;
}
ret = strv_append(state, &result, d->users);
if (ret != 0) {
return map_nt_error_from_unix(ret);
}
}
len = talloc_get_size(result);
response->extra_data.data = talloc_steal(response, result);
response->length += len;
response->data.num_entries = 0;
if (result != NULL && len >= 1) {
len -= 1;
response->data.num_entries = 1;
for (i=0; i<len; i++) {
if (result[i] == '\0') {
result[i] = ',';
response->data.num_entries += 1;
}
}
}
D_NOTICE("Got %"PRIu32" user(s):\n%s\n",
response->data.num_entries,
result);
return NT_STATUS_OK;
}
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