source4/libcli/resolve/bcast.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    broadcast name resolution module
   5
   6    Copyright (C) Andrew Tridgell 2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "libcli/resolve/resolve.h"
  24 #include "system/network.h"
  25 #include "lib/socket/netif.h"
  26
  27 /*
  28   broadcast name resolution method - async send
  29  */
  30 struct composite_context *resolve_name_bcast_send(TALLOC_CTX *mem_ctx,
  31                                                   struct event_context *event_ctx,
  32                                                   struct nbt_name *name)
  33 {
  34         int num_interfaces = iface_count();
  35         const char **address_list;
  36         struct composite_context *c;
  37         int i, count=0;
  38
  39         address_list = talloc_array(mem_ctx, const char *, num_interfaces+1);
  40         if (address_list == NULL) return NULL;
  41
  42         for (i=0;i<num_interfaces;i++) {
  43                 const char *bcast = iface_n_bcast(i);
  44                 if (bcast == NULL) continue;
  45                 address_list[count] = talloc_strdup(address_list, bcast);
  46                 if (address_list[count] == NULL) {
  47                         talloc_free(address_list);
  48                         return NULL;
  49                 }
  50                 count++;
  51         }
  52         address_list[count] = NULL;
  53
  54         c = resolve_name_nbtlist_send(mem_ctx, event_ctx, name, address_list, true, false);
  55         talloc_free(address_list);
  56
  57         return c;
  58 }
  59
  60 /*
  61   broadcast name resolution method - recv side
  62  */
  63 NTSTATUS resolve_name_bcast_recv(struct composite_context *c,
  64                                  TALLOC_CTX *mem_ctx, const char **reply_addr)
  65 {
  66         return resolve_name_nbtlist_recv(c, mem_ctx, reply_addr);
  67 }
  68
  69 /*
  70   broadcast name resolution method - sync call
  71  */
  72 NTSTATUS resolve_name_bcast(struct nbt_name *name,
  73                             TALLOC_CTX *mem_ctx,
  74                             const char **reply_addr)
  75 {
  76         struct composite_context *c = resolve_name_bcast_send(mem_ctx, NULL, name);
  77         return resolve_name_bcast_recv(c, mem_ctx, reply_addr);
  78 }
  79