source3/winbindd/wb_uid2sid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async uid2sid
   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/cli_wbint.h"
  23
  24 struct wb_uid2sid_state {
  25         struct tevent_context *ev;
  26         char *dom_name;
  27         struct dom_sid sid;
  28 };
  29
  30 static void wb_uid2sid_done(struct tevent_req *subreq);
  31
  32 struct tevent_req *wb_uid2sid_send(TALLOC_CTX *mem_ctx,
  33                                    struct tevent_context *ev,
  34                                    uid_t uid)
  35 {
  36         struct tevent_req *req, *subreq;
  37         struct wb_uid2sid_state *state;
  38         struct winbindd_domain *domain;
  39         struct winbindd_child *child;
  40         bool expired;
  41
  42         req = tevent_req_create(mem_ctx, &state, struct wb_uid2sid_state);
  43         if (req == NULL) {
  44                 return NULL;
  45         }
  46
  47         if (winbindd_use_idmap_cache()
  48             && idmap_cache_find_uid2sid(uid, &state->sid, &expired)) {
  49
  50                 DEBUG(10, ("idmap_cache_find_uid2sid found %d%s\n",
  51                            (int)uid, expired ? " (expired)": ""));
  52
  53                 if (!expired || idmap_is_offline()) {
  54                         if (is_null_sid(&state->sid)) {
  55                                 tevent_req_nterror(req,
  56                                                    NT_STATUS_NONE_MAPPED);
  57                         } else {
  58                                 tevent_req_done(req);
  59                         }
  60                         return tevent_req_post(req, ev);
  61                 }
  62         }
  63
  64         state->dom_name = NULL;
  65
  66         for (domain = domain_list(); domain != NULL; domain = domain->next) {
  67                 if (domain->have_idmap_config
  68                     && (uid >= domain->id_range_low)
  69                     && (uid <= domain->id_range_high)) {
  70                         state->dom_name = domain->name;
  71                         break;
  72                 }
  73         }
  74
  75         child = idmap_child();
  76
  77         subreq = rpccli_wbint_Uid2Sid_send(
  78                 state, ev, child->rpccli, state->dom_name,
  79                 uid, &state->sid);
  80         if (tevent_req_nomem(subreq, req)) {
  81                 return tevent_req_post(req, ev);
  82         }
  83         tevent_req_set_callback(subreq, wb_uid2sid_done, req);
  84         return req;
  85 }
  86
  87 static void wb_uid2sid_done(struct tevent_req *subreq)
  88 {
  89         struct tevent_req *req = tevent_req_callback_data(
  90                 subreq, struct tevent_req);
  91         struct wb_uid2sid_state *state = tevent_req_data(
  92                 req, struct wb_uid2sid_state);
  93         NTSTATUS status, result;
  94
  95         status = rpccli_wbint_Uid2Sid_recv(subreq, state, &result);
  96         TALLOC_FREE(subreq);
  97         if (!NT_STATUS_IS_OK(status)) {
  98                 tevent_req_nterror(req, status);
  99                 return;
 100         }
 101         if (!NT_STATUS_IS_OK(result)) {
 102                 tevent_req_nterror(req, result);
 103                 return;
 104         }
 105         tevent_req_done(req);
 106 }
 107
 108 NTSTATUS wb_uid2sid_recv(struct tevent_req *req, struct dom_sid *sid)
 109 {
 110         struct wb_uid2sid_state *state = tevent_req_data(
 111                 req, struct wb_uid2sid_state);
 112         NTSTATUS status;
 113
 114         if (tevent_req_is_nterror(req, &status)) {
 115                 return status;
 116         }
 117         sid_copy(sid, &state->sid);
 118         return NT_STATUS_OK;
 119 }