source3/winbindd/wb_lookupsid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async lookupsid
   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_lookupsid_state {
  25         struct tevent_context *ev;
  26         struct winbindd_domain *lookup_domain;
  27         struct dom_sid sid;
  28         enum lsa_SidType type;
  29         const char *domname;
  30         const char *name;
  31 };
  32
  33 static void wb_lookupsid_done(struct tevent_req *subreq);
  34
  35 struct tevent_req *wb_lookupsid_send(TALLOC_CTX *mem_ctx,
  36                                      struct tevent_context *ev,
  37                                      const struct dom_sid *sid)
  38 {
  39         struct tevent_req *req, *subreq;
  40         struct wb_lookupsid_state *state;
  41         char *dom_name, *name;
  42         NTSTATUS status;
  43
  44         req = tevent_req_create(mem_ctx, &state, struct wb_lookupsid_state);
  45         if (req == NULL) {
  46                 return NULL;
  47         }
  48         sid_copy(&state->sid, sid);
  49         state->ev = ev;
  50
  51         state->lookup_domain = find_lookup_domain_from_sid(sid);
  52         if (state->lookup_domain == NULL) {
  53                 DEBUG(5, ("Could not find domain for sid %s\n",
  54                           sid_string_dbg(sid)));
  55                 tevent_req_nterror(req, NT_STATUS_NONE_MAPPED);
  56                 return tevent_req_post(req, ev);
  57         }
  58
  59         status = wcache_sid_to_name(state->lookup_domain, sid, state,
  60                                     &dom_name, &name, &state->type);
  61         if (NT_STATUS_IS_OK(status)) {
  62                 state->domname = dom_name;
  63                 state->name = name;
  64                 tevent_req_done(req);
  65                 return tevent_req_post(req, ev);
  66         }
  67
  68         subreq = rpccli_wbint_LookupSid_send(
  69                 state, ev, state->lookup_domain->child.rpccli,
  70                 &state->sid, &state->type, &state->domname, &state->name);
  71         if (tevent_req_nomem(subreq, req)) {
  72                 return tevent_req_post(req, ev);
  73         }
  74         tevent_req_set_callback(subreq, wb_lookupsid_done, req);
  75         return req;
  76 }
  77
  78 static void wb_lookupsid_done(struct tevent_req *subreq)
  79 {
  80         struct tevent_req *req = tevent_req_callback_data(
  81                 subreq, struct tevent_req);
  82         struct wb_lookupsid_state *state = tevent_req_data(
  83                 req, struct wb_lookupsid_state);
  84         struct winbindd_domain *forest_root;
  85         NTSTATUS status, result;
  86
  87         status = rpccli_wbint_LookupSid_recv(subreq, state, &result);
  88         TALLOC_FREE(subreq);
  89         if (!NT_STATUS_IS_OK(status)) {
  90                 tevent_req_nterror(req, status);
  91                 return;
  92         }
  93         if (NT_STATUS_IS_OK(result)) {
  94                 tevent_req_done(req);
  95                 return;
  96         }
  97
  98         /*
  99          * Let's try the forest root
 100          */
 101         forest_root = find_root_domain();
 102         if ((forest_root == NULL) || (forest_root == state->lookup_domain)) {
 103                 tevent_req_nterror(req, result);
 104                 return;
 105         }
 106         state->lookup_domain = forest_root;
 107
 108         subreq = rpccli_wbint_LookupSid_send(
 109                 state, state->ev, state->lookup_domain->child.rpccli,
 110                 &state->sid, &state->type, &state->domname, &state->name);
 111         if (tevent_req_nomem(subreq, req)) {
 112                 return;
 113         }
 114         tevent_req_set_callback(subreq, wb_lookupsid_done, req);
 115 }
 116
 117 NTSTATUS wb_lookupsid_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
 118                            enum lsa_SidType *type, const char **domain,
 119                            const char **name)
 120 {
 121         struct wb_lookupsid_state *state = tevent_req_data(
 122                 req, struct wb_lookupsid_state);
 123         NTSTATUS status;
 124
 125         if (tevent_req_is_nterror(req, &status)) {
 126                 return status;
 127         }
 128         *type = state->type;
 129         *domain = talloc_move(mem_ctx, &state->domname);
 130         *name = talloc_move(mem_ctx, &state->name);
 131         return NT_STATUS_OK;
 132 }