source3/winbindd/winbindd_sid_to_uid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_SID_TO_UID
   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
  23 struct winbindd_sid_to_uid_state {
  24         struct dom_sid sid;
  25         uid_t uid;
  26 };
  27
  28 static void winbindd_sid_to_uid_done(struct tevent_req *subreq);
  29
  30 struct tevent_req *winbindd_sid_to_uid_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_sid_to_uid_state *state;
  37
  38         req = tevent_req_create(mem_ctx, &state,
  39                                 struct winbindd_sid_to_uid_state);
  40         if (req == NULL) {
  41                 return NULL;
  42         }
  43
  44         /* Ensure null termination */
  45         request->data.sid[sizeof(request->data.sid)-1]='\0';
  46
  47         DEBUG(3, ("sid to uid %s\n", request->data.sid));
  48
  49         if (!string_to_sid(&state->sid, request->data.sid)) {
  50                 DEBUG(1, ("Could not get convert sid %s from string\n",
  51                           request->data.sid));
  52                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  53                 return tevent_req_post(req, ev);
  54         }
  55
  56         subreq = wb_sid2uid_send(state, ev, &state->sid);
  57         if (tevent_req_nomem(subreq, req)) {
  58                 return tevent_req_post(req, ev);
  59         }
  60         tevent_req_set_callback(subreq, winbindd_sid_to_uid_done, req);
  61         return req;
  62 }
  63
  64 static void winbindd_sid_to_uid_done(struct tevent_req *subreq)
  65 {
  66         struct tevent_req *req = tevent_req_callback_data(
  67                 subreq, struct tevent_req);
  68         struct winbindd_sid_to_uid_state *state = tevent_req_data(
  69                 req, struct winbindd_sid_to_uid_state);
  70         NTSTATUS status;
  71
  72         status = wb_sid2uid_recv(subreq, &state->uid);
  73         TALLOC_FREE(subreq);
  74         if (!NT_STATUS_IS_OK(status)) {
  75                 tevent_req_nterror(req, status);
  76                 return;
  77         }
  78         tevent_req_done(req);
  79 }
  80
  81 NTSTATUS winbindd_sid_to_uid_recv(struct tevent_req *req,
  82                                   struct winbindd_response *response)
  83 {
  84         struct winbindd_sid_to_uid_state *state = tevent_req_data(
  85                 req, struct winbindd_sid_to_uid_state);
  86         NTSTATUS status;
  87
  88         if (tevent_req_is_nterror(req, &status)) {
  89                 DEBUG(5, ("Could not convert sid %s: %s\n",
  90                           sid_string_dbg(&state->sid), nt_errstr(status)));
  91                 return status;
  92         }
  93         response->data.uid = state->uid;
  94         return NT_STATUS_OK;
  95 }