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/ndr_winbind_c.h"
  23 #include "../libcli/security/security.h"
  24
  25 struct wb_lookupsid_state {
  26         struct tevent_context *ev;
  27         struct winbindd_domain *lookup_domain;
  28         struct dom_sid sid;
  29         enum lsa_SidType type;
  30         const char *domname;
  31         const char *name;
  32 };
  33
  34 static void wb_lookupsid_done(struct tevent_req *subreq);
  35
  36 struct tevent_req *wb_lookupsid_send(TALLOC_CTX *mem_ctx,
  37                                      struct tevent_context *ev,
  38                                      const struct dom_sid *sid)
  39 {
  40         struct tevent_req *req, *subreq;
  41         struct wb_lookupsid_state *state;
  42
  43         req = tevent_req_create(mem_ctx, &state, struct wb_lookupsid_state);
  44         if (req == NULL) {
  45                 return NULL;
  46         }
  47         sid_copy(&state->sid, sid);
  48         state->ev = ev;
  49
  50         state->lookup_domain = find_lookup_domain_from_sid(sid);
  51         if (state->lookup_domain == NULL) {
  52                 DEBUG(5, ("Could not find domain for sid %s\n",
  53                           sid_string_dbg(sid)));
  54                 tevent_req_nterror(req, NT_STATUS_NONE_MAPPED);
  55                 return tevent_req_post(req, ev);
  56         }
  57
  58         subreq = dcerpc_wbint_LookupSid_send(
  59                 state, ev, dom_child_handle(state->lookup_domain),
  60                 &state->sid, &state->type, &state->domname, &state->name);
  61         if (tevent_req_nomem(subreq, req)) {
  62                 return tevent_req_post(req, ev);
  63         }
  64         tevent_req_set_callback(subreq, wb_lookupsid_done, req);
  65         return req;
  66 }
  67
  68 static void wb_lookupsid_done(struct tevent_req *subreq)
  69 {
  70         struct tevent_req *req = tevent_req_callback_data(
  71                 subreq, struct tevent_req);
  72         struct wb_lookupsid_state *state = tevent_req_data(
  73                 req, struct wb_lookupsid_state);
  74         struct winbindd_domain *forest_root;
  75         NTSTATUS status, result;
  76
  77         status = dcerpc_wbint_LookupSid_recv(subreq, state, &result);
  78         TALLOC_FREE(subreq);
  79         if (tevent_req_nterror(req, status)) {
  80                 return;
  81         }
  82         if (NT_STATUS_IS_OK(result)) {
  83                 tevent_req_done(req);
  84                 return;
  85         }
  86
  87         /*
  88          * Let's try the forest root
  89          */
  90         forest_root = find_root_domain();
  91         if ((forest_root == NULL) || (forest_root == state->lookup_domain)) {
  92                 tevent_req_nterror(req, result);
  93                 return;
  94         }
  95         state->lookup_domain = forest_root;
  96
  97         subreq = dcerpc_wbint_LookupSid_send(
  98                 state, state->ev, dom_child_handle(state->lookup_domain),
  99                 &state->sid, &state->type, &state->domname, &state->name);
 100         if (tevent_req_nomem(subreq, req)) {
 101                 return;
 102         }
 103         tevent_req_set_callback(subreq, wb_lookupsid_done, req);
 104 }
 105
 106 NTSTATUS wb_lookupsid_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
 107                            enum lsa_SidType *type, const char **domain,
 108                            const char **name)
 109 {
 110         struct wb_lookupsid_state *state = tevent_req_data(
 111                 req, struct wb_lookupsid_state);
 112         NTSTATUS status;
 113
 114         if (tevent_req_is_nterror(req, &status)) {
 115                 return status;
 116         }
 117         *type = state->type;
 118         *domain = talloc_move(mem_ctx, &state->domname);
 119         *name = talloc_move(mem_ctx, &state->name);
 120         return NT_STATUS_OK;
 121 }