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_request *request)
  33 {
  34         struct tevent_req *req, *subreq;
  35         struct winbindd_sid_to_uid_state *state;
  36
  37         req = tevent_req_create(mem_ctx, &state,
  38                                 struct winbindd_sid_to_uid_state);
  39         if (req == NULL) {
  40                 return NULL;
  41         }
  42
  43         /* Ensure null termination */
  44         request->data.sid[sizeof(request->data.sid)-1]='\0';
  45
  46         DEBUG(3, ("sid to uid %s\n", request->data.sid));
  47
  48         if (!string_to_sid(&state->sid, request->data.sid)) {
  49                 DEBUG(1, ("Could not get convert sid %s from string\n",
  50                           request->data.sid));
  51                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  52                 return tevent_req_post(req, ev);
  53         }
  54
  55         subreq = wb_sid2uid_send(state, ev, &state->sid);
  56         if (tevent_req_nomem(subreq, req)) {
  57                 return tevent_req_post(req, ev);
  58         }
  59         tevent_req_set_callback(subreq, winbindd_sid_to_uid_done, req);
  60         return req;
  61 }
  62
  63 static void winbindd_sid_to_uid_done(struct tevent_req *subreq)
  64 {
  65         struct tevent_req *req = tevent_req_callback_data(
  66                 subreq, struct tevent_req);
  67         struct winbindd_sid_to_uid_state *state = tevent_req_data(
  68                 req, struct winbindd_sid_to_uid_state);
  69         NTSTATUS status;
  70
  71         status = wb_sid2uid_recv(subreq, &state->uid);
  72         TALLOC_FREE(subreq);
  73         if (!NT_STATUS_IS_OK(status)) {
  74                 tevent_req_nterror(req, status);
  75                 return;
  76         }
  77         tevent_req_done(req);
  78 }
  79
  80 NTSTATUS winbindd_sid_to_uid_recv(struct tevent_req *req,
  81                                   struct winbindd_response *response)
  82 {
  83         struct winbindd_sid_to_uid_state *state = tevent_req_data(
  84                 req, struct winbindd_sid_to_uid_state);
  85         NTSTATUS status;
  86
  87         if (tevent_req_is_nterror(req, &status)) {
  88                 DEBUG(5, ("Could not convert sid %s: %s\n",
  89                           sid_string_dbg(&state->sid), nt_errstr(status)));
  90                 return status;
  91         }
  92         response->data.uid = state->uid;
  93         return NT_STATUS_OK;
  94 }