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/*
Unix SMB/CIFS implementation.
async implementation of WINBINDD_WINS_BYIP
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 "librpc/gen_ndr/ndr_wbint_c.h"
#include "libsmb/nmblib.h"
struct winbindd_wins_byip_state {
struct nmb_name star;
struct sockaddr_storage addr;
fstring response;
};
static void winbindd_wins_byip_done(struct tevent_req *subreq);
struct tevent_req *winbindd_wins_byip_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_byip_state *state;
req = tevent_req_create(mem_ctx, &state,
struct winbindd_wins_byip_state);
if (req == NULL) {
return NULL;
}
/* Ensure null termination */
request->data.winsreq[sizeof(request->data.winsreq)-1]='\0';
fstr_sprintf(state->response, "%s\t", request->data.winsreq);
DEBUG(3, ("[%5lu]: wins_byip %s\n", (unsigned long)cli->pid,
request->data.winsreq));
make_nmb_name(&state->star, "*", 0);
if (!interpret_string_addr(&state->addr, request->data.winsreq,
AI_NUMERICHOST)) {
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return tevent_req_post(req, ev);
}
subreq = node_status_query_send(state, ev, &state->star,
&state->addr);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, winbindd_wins_byip_done, req);
return req;
}
static void winbindd_wins_byip_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct winbindd_wins_byip_state *state = tevent_req_data(
req, struct winbindd_wins_byip_state);
struct node_status *names;
int i, num_names;
NTSTATUS status;
status = node_status_query_recv(subreq, talloc_tos(), &names,
&num_names, NULL);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
for (i=0; i<num_names; i++) {
size_t size;
/*
* ignore group names
*/
if (names[i].flags & 0x80) {
continue;
}
/*
* Only report 0x20
*/
if (names[i].type != 0x20) {
continue;
}
DEBUG(10, ("got name %s\n", names[i].name));
size = strlen(names[i].name + strlen(state->response));
if (size > sizeof(state->response) - 1) {
DEBUG(10, ("To much data\n"));
tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
return;
}
fstrcat(state->response, names[i].name);
fstrcat(state->response, " ");
}
state->response[strlen(state->response)-1] = '\n';
DEBUG(10, ("response: %s", state->response));
TALLOC_FREE(names);
tevent_req_done(req);
}
NTSTATUS winbindd_wins_byip_recv(struct tevent_req *req,
struct winbindd_response *presp)
{
struct winbindd_wins_byip_state *state = tevent_req_data(
req, struct winbindd_wins_byip_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
return status;
}
fstrcpy(presp->data.winsresp, state->response);
return NT_STATUS_OK;
}
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