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/*
Unix SMB/CIFS implementation.
async implementation of WINBINDD_GETPWENT
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"
struct winbindd_getpwent_state {
struct tevent_context *ev;
struct winbindd_cli_state *cli;
int max_users;
int num_users;
struct winbindd_pw *users;
};
static void winbindd_getpwent_done(struct tevent_req *subreq);
struct tevent_req *winbindd_getpwent_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct winbindd_cli_state *cli,
struct winbindd_request *request)
{
struct tevent_req *req, *subreq;
struct winbindd_getpwent_state *state;
req = tevent_req_create(mem_ctx, &state,
struct winbindd_getpwent_state);
if (req == NULL) {
return NULL;
}
state->ev = ev;
state->num_users = 0;
state->cli = cli;
DEBUG(3, ("[%5lu]: getpwent\n", (unsigned long)cli->pid));
if (!lp_winbind_enum_users()) {
tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
return tevent_req_post(req, ev);
}
if (cli->pwent_state == NULL) {
tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
return tevent_req_post(req, ev);
}
state->max_users = MIN(500, request->data.num_entries);
if (state->max_users == 0) {
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return tevent_req_post(req, ev);
}
state->users = talloc_zero_array(state, struct winbindd_pw,
state->max_users);
if (tevent_req_nomem(state->users, req)) {
return tevent_req_post(req, ev);
}
subreq = wb_next_pwent_send(state, ev, cli->pwent_state,
&state->users[state->num_users]);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, winbindd_getpwent_done, req);
return req;
}
static void winbindd_getpwent_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct winbindd_getpwent_state *state = tevent_req_data(
req, struct winbindd_getpwent_state);
NTSTATUS status;
status = wb_next_pwent_recv(subreq);
TALLOC_FREE(subreq);
if (NT_STATUS_EQUAL(status, NT_STATUS_NO_MORE_ENTRIES)) {
DEBUG(10, ("winbindd_getpwent_done: done with %d users\n",
(int)state->num_users));
TALLOC_FREE(state->cli->pwent_state);
tevent_req_done(req);
return;
}
if (tevent_req_nterror(req, status)) {
return;
}
state->num_users += 1;
if (state->num_users >= state->max_users) {
DEBUG(10, ("winbindd_getpwent_done: Got enough users: %d\n",
(int)state->num_users));
tevent_req_done(req);
return;
}
if (state->cli->pwent_state == NULL) {
DEBUG(10, ("winbindd_getpwent_done: endpwent called in "
"between\n"));
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
subreq = wb_next_pwent_send(state, state->ev, state->cli->pwent_state,
&state->users[state->num_users]);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, winbindd_getpwent_done, req);
}
NTSTATUS winbindd_getpwent_recv(struct tevent_req *req,
struct winbindd_response *response)
{
struct winbindd_getpwent_state *state = tevent_req_data(
req, struct winbindd_getpwent_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
DEBUG(5, ("getpwent failed: %s\n", nt_errstr(status)));
return status;
}
if (state->num_users == 0) {
return NT_STATUS_NO_MORE_ENTRIES;
}
response->data.num_entries = state->num_users;
response->extra_data.data = talloc_move(response, &state->users);
response->length += state->num_users * sizeof(struct winbindd_pw);
return NT_STATUS_OK;
}
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