mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
c57cce1b97
Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org> Autobuild-User(master): Jeremy Allison <jra@samba.org> Autobuild-Date(master): Tue Jan 23 06:36:36 CET 2018 on sn-devel-144
118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
|
|
Unix SMB/CIFS implementation.
|
|
|
|
broadcast name resolution module
|
|
|
|
Copyright (C) Andrew Tridgell 2005
|
|
Copyright (C) Jelmer Vernooij 2007
|
|
|
|
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 "libcli/resolve/resolve.h"
|
|
#include "system/network.h"
|
|
#include "lib/socket/netif.h"
|
|
#include "param/param.h"
|
|
|
|
struct resolve_bcast_data {
|
|
struct interface *ifaces;
|
|
uint16_t nbt_port;
|
|
int nbt_timeout;
|
|
};
|
|
|
|
/**
|
|
broadcast name resolution method - async send
|
|
*/
|
|
static struct composite_context *resolve_name_bcast_send(
|
|
TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *event_ctx,
|
|
void *userdata, uint32_t flags,
|
|
uint16_t port,
|
|
struct nbt_name *name)
|
|
{
|
|
int num_interfaces;
|
|
const char **address_list;
|
|
struct composite_context *c;
|
|
int i, count=0;
|
|
struct resolve_bcast_data *data = talloc_get_type(userdata, struct resolve_bcast_data);
|
|
|
|
num_interfaces = iface_list_count(data->ifaces);
|
|
|
|
address_list = talloc_array(mem_ctx, const char *, num_interfaces+1);
|
|
if (address_list == NULL) return NULL;
|
|
|
|
for (i=0;i<num_interfaces;i++) {
|
|
bool ipv4 = iface_list_n_is_v4(data->ifaces, i);
|
|
const char *bcast;
|
|
|
|
if (!ipv4) {
|
|
continue;
|
|
}
|
|
|
|
bcast = iface_list_n_bcast(data->ifaces, i);
|
|
if (bcast == NULL) {
|
|
continue;
|
|
}
|
|
|
|
address_list[count] = talloc_strdup(address_list, bcast);
|
|
if (address_list[count] == NULL) {
|
|
talloc_free(address_list);
|
|
return NULL;
|
|
}
|
|
count++;
|
|
}
|
|
address_list[count] = NULL;
|
|
|
|
c = resolve_name_nbtlist_send(mem_ctx, event_ctx, flags, port, name,
|
|
address_list, data->ifaces, data->nbt_port,
|
|
data->nbt_timeout, true, false);
|
|
talloc_free(address_list);
|
|
|
|
return c;
|
|
}
|
|
|
|
/*
|
|
broadcast name resolution method - recv side
|
|
*/
|
|
static NTSTATUS resolve_name_bcast_recv(struct composite_context *c,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct socket_address ***addrs,
|
|
char ***names)
|
|
{
|
|
NTSTATUS status = resolve_name_nbtlist_recv(c, mem_ctx, addrs, names);
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT)) {
|
|
/* this makes much more sense for a bcast name resolution
|
|
timeout */
|
|
status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
bool resolve_context_add_bcast_method(struct resolve_context *ctx, struct interface *ifaces, uint16_t nbt_port, int nbt_timeout)
|
|
{
|
|
struct resolve_bcast_data *data = talloc(ctx, struct resolve_bcast_data);
|
|
data->ifaces = ifaces;
|
|
data->nbt_port = nbt_port;
|
|
data->nbt_timeout = nbt_timeout;
|
|
return resolve_context_add_method(ctx, resolve_name_bcast_send, resolve_name_bcast_recv, data);
|
|
}
|
|
|
|
bool resolve_context_add_bcast_method_lp(struct resolve_context *ctx, struct loadparm_context *lp_ctx)
|
|
{
|
|
struct interface *ifaces;
|
|
load_interface_list(ctx, lp_ctx, &ifaces);
|
|
return resolve_context_add_bcast_method(ctx, ifaces, lpcfg_nbt_port(lp_ctx), lpcfg_parm_int(lp_ctx, NULL, "nbt", "timeout", 1));
|
|
}
|