source4/winbind/wb_sid2uid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Map a SID to a uid
   5
   6    Copyright (C) Kai Blin 2007-2008
   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/composite/composite.h"
  24 #include "winbind/wb_server.h"
  25 #include "smbd/service_task.h"
  26 #include "winbind/wb_helper.h"
  27 #include "libcli/security/proto.h"
  28 #include "winbind/idmap.h"
  29
  30 struct sid2uid_state {
  31         struct composite_context *ctx;
  32         struct wbsrv_service *service;
  33         uid_t uid;
  34 };
  35
  36 struct composite_context *wb_sid2uid_send(TALLOC_CTX *mem_ctx,
  37                 struct wbsrv_service *service, const struct dom_sid *sid)
  38 {
  39         struct composite_context *result;
  40         struct sid2uid_state *state;
  41
  42         DEBUG(5, ("wb_sid2uid_send called\n"));
  43
  44         result = composite_create(mem_ctx, service->task->event_ctx);
  45         if (!result) return NULL;
  46
  47         state = talloc(result, struct sid2uid_state);
  48         if(composite_nomem(state, result)) return result;
  49
  50         state->ctx = result;
  51         result->private_data = state;
  52         state->service = service;
  53
  54         state->ctx->status = idmap_sid_to_uid(service->idmap_ctx, state, sid,
  55                                               &state->uid);
  56         if (NT_STATUS_EQUAL(state->ctx->status, NT_STATUS_RETRY)) {
  57                 state->ctx->status = idmap_sid_to_uid(service->idmap_ctx, state,
  58                                                       sid, &state->uid);
  59         }
  60         if (!composite_is_ok(state->ctx)) return result;
  61
  62         composite_done(state->ctx);
  63         return result;
  64 }
  65
  66 NTSTATUS wb_sid2uid_recv(struct composite_context *ctx, uid_t *uid)
  67 {
  68         NTSTATUS status = composite_wait(ctx);
  69
  70         DEBUG(5, ("wb_sid2uid_recv called\n"));
  71
  72         if (NT_STATUS_IS_OK(status)) {
  73                 struct sid2uid_state *state =
  74                         talloc_get_type(ctx->private_data,
  75                                 struct sid2uid_state);
  76                 *uid = state->uid;
  77         }
  78         talloc_free(ctx);
  79         return status;
  80 }
  81