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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
/*
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Unix SMB/CIFS implementation.
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broadcast name resolution module
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Copyright (C) Andrew Tridgell 2005
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Copyright (C) Jelmer Vernooij 2007
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "libcli/resolve/resolve.h"
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#include "system/network.h"
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#include "lib/socket/netif.h"
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#include "param/param.h"
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struct resolve_bcast_data {
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struct interface *ifaces;
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uint16_t nbt_port;
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int nbt_timeout;
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};
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/**
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broadcast name resolution method - async send
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*/
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static struct composite_context *resolve_name_bcast_send(
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TALLOC_CTX *mem_ctx,
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struct tevent_context *event_ctx,
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void *userdata, uint32_t flags,
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uint16_t port,
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struct nbt_name *name)
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{
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int num_interfaces;
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const char **address_list;
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struct composite_context *c;
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int i, count=0;
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struct resolve_bcast_data *data = talloc_get_type(userdata, struct resolve_bcast_data);
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num_interfaces = iface_list_count(data->ifaces);
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address_list = talloc_array(mem_ctx, const char *, num_interfaces+1);
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if (address_list == NULL) return NULL;
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for (i=0;i<num_interfaces;i++) {
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bool ipv4 = iface_list_n_is_v4(data->ifaces, i);
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const char *bcast;
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if (!ipv4) {
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continue;
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}
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bcast = iface_list_n_bcast(data->ifaces, i);
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if (bcast == NULL) {
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continue;
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}
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address_list[count] = talloc_strdup(address_list, bcast);
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if (address_list[count] == NULL) {
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talloc_free(address_list);
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return NULL;
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}
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count++;
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}
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address_list[count] = NULL;
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c = resolve_name_nbtlist_send(mem_ctx, event_ctx, flags, port, name,
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address_list, data->ifaces, data->nbt_port,
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data->nbt_timeout, true, false);
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talloc_free(address_list);
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return c;
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}
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/*
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broadcast name resolution method - recv side
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*/
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static NTSTATUS resolve_name_bcast_recv(struct composite_context *c,
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TALLOC_CTX *mem_ctx,
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struct socket_address ***addrs,
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char ***names)
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{
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NTSTATUS status = resolve_name_nbtlist_recv(c, mem_ctx, addrs, names);
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if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT)) {
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/* this makes much more sense for a bcast name resolution
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timeout */
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status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
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}
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return status;
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}
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bool resolve_context_add_bcast_method(struct resolve_context *ctx, struct interface *ifaces, uint16_t nbt_port, int nbt_timeout)
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{
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struct resolve_bcast_data *data = talloc(ctx, struct resolve_bcast_data);
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data->ifaces = ifaces;
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data->nbt_port = nbt_port;
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data->nbt_timeout = nbt_timeout;
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return resolve_context_add_method(ctx, resolve_name_bcast_send, resolve_name_bcast_recv, data);
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}
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bool resolve_context_add_bcast_method_lp(struct resolve_context *ctx, struct loadparm_context *lp_ctx)
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{
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struct interface *ifaces;
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load_interface_list(ctx, lp_ctx, &ifaces);
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return resolve_context_add_bcast_method(ctx, ifaces, lpcfg_nbt_port(lp_ctx), lpcfg_parm_int(lp_ctx, NULL, "nbt", "timeout", 1));
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}
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