source3/winbindd/winbindd_ping_dc.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_PING_DC
   4    Copyright (C) Volker Lendecke 2009
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "winbindd.h"
  22 #include "librpc/gen_ndr/ndr_wbint_c.h"
  23
  24 struct winbindd_ping_dc_state {
  25         uint8_t dummy;
  26 };
  27
  28 static void winbindd_ping_dc_done(struct tevent_req *subreq);
  29
  30 struct tevent_req *winbindd_ping_dc_send(TALLOC_CTX *mem_ctx,
  31                                          struct tevent_context *ev,
  32                                          struct winbindd_cli_state *cli,
  33                                          struct winbindd_request *request)
  34 {
  35         struct tevent_req *req, *subreq;
  36         struct winbindd_ping_dc_state *state;
  37         struct winbindd_domain *domain;
  38
  39         req = tevent_req_create(mem_ctx, &state,
  40                                 struct winbindd_ping_dc_state);
  41         if (req == NULL) {
  42                 return NULL;
  43         }
  44
  45         if (request->domain_name[0] == '\0') {
  46                 /* preserve old behavior, when no domain name is given */
  47                 domain = find_our_domain();
  48         } else {
  49                 domain = find_domain_from_name(request->domain_name);
  50         }
  51         if (domain == NULL) {
  52                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
  53                 return tevent_req_post(req, ev);
  54         }
  55         if (domain->internal) {
  56                 /*
  57                  * Internal domains are passdb based, we can always
  58                  * contact them.
  59                  */
  60                 tevent_req_done(req);
  61                 return tevent_req_post(req, ev);
  62         }
  63
  64         subreq = dcerpc_wbint_PingDc_send(state, ev, dom_child_handle(domain));
  65         if (tevent_req_nomem(subreq, req)) {
  66                 return tevent_req_post(req, ev);
  67         }
  68         tevent_req_set_callback(subreq, winbindd_ping_dc_done, req);
  69         return req;
  70 }
  71
  72 static void winbindd_ping_dc_done(struct tevent_req *subreq)
  73 {
  74         struct tevent_req *req = tevent_req_callback_data(
  75                 subreq, struct tevent_req);
  76         struct winbindd_ping_dc_state *state = tevent_req_data(
  77                 req, struct winbindd_ping_dc_state);
  78         NTSTATUS status, result;
  79
  80         status = dcerpc_wbint_PingDc_recv(subreq, state, &result);
  81         if (any_nt_status_not_ok(status, result, &status)) {
  82                 tevent_req_nterror(req, status);
  83                 return;
  84         }
  85         tevent_req_done(req);
  86 }
  87
  88 NTSTATUS winbindd_ping_dc_recv(struct tevent_req *req,
  89                                struct winbindd_response *presp)
  90 {
  91         return tevent_req_simple_recv_ntstatus(req);
  92 }