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/*
Unix SMB/CIFS implementation.
async implementation of WINBINDD_WINS_BYNAME
Copyright (C) Volker Lendecke 2011
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 "libsmb/namequery.h"
#include "librpc/gen_ndr/ndr_winbind_c.h"
#include "libsmb/nmblib.h"
#include "lib/util/string_wrappers.h"
struct winbindd_wins_byname_state {
struct tevent_context *ev;
struct winbindd_request *request;
struct sockaddr_storage *addrs;
size_t num_addrs;
};
static void winbindd_wins_byname_wins_done(struct tevent_req *subreq);
static void winbindd_wins_byname_bcast_done(struct tevent_req *subreq);
struct tevent_req *winbindd_wins_byname_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_wins_byname_state *state;
req = tevent_req_create(mem_ctx, &state,
struct winbindd_wins_byname_state);
if (req == NULL) {
return NULL;
}
state->ev = ev;
state->request = request;
/* Ensure null termination */
request->data.winsreq[sizeof(request->data.winsreq)-1]='\0';
D_NOTICE("[%s (%u)] Winbind external command WINS_BYNAME start.\n"
"Resolving wins byname for '%s'.\n",
cli->client_name,
(unsigned int)cli->pid,
request->data.winsreq);
subreq = resolve_wins_send(state, ev, state->request->data.winsreq,
0x20);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, winbindd_wins_byname_wins_done, req);
return req;
}
static void winbindd_wins_byname_wins_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct winbindd_wins_byname_state *state = tevent_req_data(
req, struct winbindd_wins_byname_state);
NTSTATUS status;
status = resolve_wins_recv(subreq, talloc_tos(), &state->addrs,
&state->num_addrs, NULL);
TALLOC_FREE(subreq);
if (NT_STATUS_IS_OK(status)) {
tevent_req_done(req);
return;
}
subreq = name_resolve_bcast_send(state, state->ev,
state->request->data.winsreq, 0x20);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, winbindd_wins_byname_bcast_done, req);
}
static void winbindd_wins_byname_bcast_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct winbindd_wins_byname_state *state = tevent_req_data(
req, struct winbindd_wins_byname_state);
NTSTATUS status;
status = name_resolve_bcast_recv(subreq, talloc_tos(), &state->addrs,
&state->num_addrs);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
tevent_req_done(req);
}
NTSTATUS winbindd_wins_byname_recv(struct tevent_req *req,
struct winbindd_response *presp)
{
struct winbindd_wins_byname_state *state = tevent_req_data(
req, struct winbindd_wins_byname_state);
char *response;
NTSTATUS status;
size_t i;
if (tevent_req_is_nterror(req, &status)) {
return status;
}
response = talloc_strdup(talloc_tos(), "");
if (response == NULL) {
return NT_STATUS_NO_MEMORY;
}
D_NOTICE("Winbind external command WINS_BYNAME end.\n"
"Received %zu address(es).\n",
state->num_addrs);
for (i=0; i<state->num_addrs; i++) {
char addr[INET6_ADDRSTRLEN];
print_sockaddr(addr, sizeof(addr), &state->addrs[i]);
D_NOTICE("%zu: %s\n", i, addr);
talloc_asprintf_addbuf(
&response, "%s%s", addr,
i < (state->num_addrs-1) ? " " : "");
}
talloc_asprintf_addbuf(
&response, "\t%s\n", state->request->data.winsreq);
if (response == NULL) {
return NT_STATUS_NO_MEMORY;
}
if (talloc_get_size(response) > sizeof(presp->data.winsresp)) {
TALLOC_FREE(response);
return NT_STATUS_MARSHALL_OVERFLOW;
}
fstrcpy(presp->data.winsresp, response);
TALLOC_FREE(response);
return NT_STATUS_OK;
}
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