source4/winbind/wb_dom_info.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Get a struct wb_dom_info for a domain using DNS, netbios, possibly cldap
   5    etc.
   6
   7    Copyright (C) Volker Lendecke 2005
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "libcli/composite/composite.h"
  25 #include "libcli/resolve/resolve.h"
  26 #include "libcli/security/security.h"
  27 #include "winbind/wb_server.h"
  28 #include "smbd/service_task.h"
  29 #include "libcli/finddcs.h"
  30 #include "param/param.h"
  31
  32 struct get_dom_info_state {
  33         struct composite_context *ctx;
  34         struct wb_dom_info *info;
  35 };
  36
  37 static void get_dom_info_recv_addrs(struct composite_context *ctx);
  38
  39 struct composite_context *wb_get_dom_info_send(TALLOC_CTX *mem_ctx,
  40                                                struct wbsrv_service *service,
  41                                                const char *domain_name,
  42                                                const struct dom_sid *sid)
  43 {
  44         struct composite_context *result, *ctx;
  45         struct get_dom_info_state *state;
  46         struct dom_sid *dom_sid;
  47         result = composite_create(mem_ctx, service->task->event_ctx);
  48         if (result == NULL) goto failed;
  49
  50         state = talloc(result, struct get_dom_info_state);
  51         if (state == NULL) goto failed;
  52         state->ctx = result;
  53         result->private_data = state;
  54
  55         state->info = talloc_zero(state, struct wb_dom_info);
  56         if (state->info == NULL) goto failed;
  57
  58         state->info->name = talloc_strdup(state->info, domain_name);
  59         if (state->info->name == NULL) goto failed;
  60
  61         state->info->sid = dom_sid_dup(state->info, sid);
  62         if (state->info->sid == NULL) goto failed;
  63
  64         dom_sid = dom_sid_dup(mem_ctx, sid);
  65         if (dom_sid == NULL) goto failed;
  66
  67         ctx = finddcs_send(mem_ctx, lp_netbios_name(service->task->lp_ctx),
  68                            lp_nbt_port(service->task->lp_ctx),
  69                            domain_name, NBT_NAME_LOGON,
  70                            dom_sid,
  71                            lp_resolve_context(service->task->lp_ctx),
  72                            service->task->event_ctx,
  73                            service->task->msg_ctx);
  74         if (ctx == NULL) goto failed;
  75
  76         composite_continue(state->ctx, ctx, get_dom_info_recv_addrs, state);
  77         return result;
  78
  79  failed:
  80         talloc_free(result);
  81         return NULL;
  82 }
  83
  84 static void get_dom_info_recv_addrs(struct composite_context *ctx)
  85 {
  86         struct get_dom_info_state *state =
  87                 talloc_get_type(ctx->async.private_data,
  88                                 struct get_dom_info_state);
  89
  90         state->ctx->status = finddcs_recv(ctx, state->info,
  91                                           &state->info->num_dcs,
  92                                           &state->info->dcs);
  93         if (!composite_is_ok(state->ctx)) return;
  94
  95         composite_done(state->ctx);
  96 }
  97
  98 NTSTATUS wb_get_dom_info_recv(struct composite_context *ctx,
  99                               TALLOC_CTX *mem_ctx,
 100                               struct wb_dom_info **result)
 101 {
 102         NTSTATUS status = composite_wait(ctx);
 103         if (NT_STATUS_IS_OK(status)) {
 104                 struct get_dom_info_state *state =
 105                         talloc_get_type(ctx->private_data,
 106                                         struct get_dom_info_state);
 107                 *result = talloc_steal(mem_ctx, state->info);
 108         }
 109         talloc_free(ctx);
 110         return status;
 111 }
 112
 113 NTSTATUS wb_get_dom_info(TALLOC_CTX *mem_ctx,
 114                          struct wbsrv_service *service,
 115                          const char *domain_name,
 116                          const struct dom_sid *sid,
 117                          struct wb_dom_info **result)
 118 {
 119         struct composite_context *ctx =
 120                 wb_get_dom_info_send(mem_ctx, service, domain_name, sid);
 121         return wb_get_dom_info_recv(ctx, mem_ctx, result);
 122 }