source3/winbindd/winbindd_allocate_uid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_ALLOCATE_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 #include "librpc/gen_ndr/ndr_winbind_c.h"
  23
  24 struct winbindd_allocate_uid_state {
  25         struct tevent_context *ev;
  26         uint64_t uid;
  27 };
  28
  29 static void winbindd_allocate_uid_initialized(struct tevent_req *subreq);
  30 static void winbindd_allocate_uid_done(struct tevent_req *subreq);
  31
  32 struct tevent_req *winbindd_allocate_uid_send(TALLOC_CTX *mem_ctx,
  33                                               struct tevent_context *ev,
  34                                               struct winbindd_cli_state *cli,
  35                                               struct winbindd_request *request)
  36 {
  37         struct tevent_req *req, *subreq;
  38         struct winbindd_allocate_uid_state *state;
  39
  40         req = tevent_req_create(mem_ctx, &state,
  41                                 struct winbindd_allocate_uid_state);
  42         if (req == NULL) {
  43                 return NULL;
  44         }
  45         state->ev = ev;
  46
  47         DEBUG(3, ("allocate_uid\n"));
  48
  49         subreq = wb_parent_idmap_setup_send(state, ev);
  50         if (tevent_req_nomem(subreq, req)) {
  51                 return tevent_req_post(req, ev);
  52         }
  53         tevent_req_set_callback(subreq, winbindd_allocate_uid_initialized, req);
  54         return req;
  55 }
  56
  57 static void winbindd_allocate_uid_initialized(struct tevent_req *subreq)
  58 {
  59         struct tevent_req *req = tevent_req_callback_data(
  60                 subreq, struct tevent_req);
  61         struct dcerpc_binding_handle *child_binding_handle = NULL;
  62         struct winbindd_allocate_uid_state *state = tevent_req_data(
  63                 req, struct winbindd_allocate_uid_state);
  64         const struct wb_parent_idmap_config *cfg = NULL;
  65         NTSTATUS status;
  66
  67         status = wb_parent_idmap_setup_recv(subreq, &cfg);
  68         TALLOC_FREE(subreq);
  69         if (tevent_req_nterror(req, status)) {
  70                 return;
  71         }
  72         if (cfg->num_doms == 0) {
  73                 /*
  74                  * idmap_tdb also returns UNSUCCESSFUL if a range is full
  75                  */
  76                 tevent_req_nterror(req, NT_STATUS_UNSUCCESSFUL);
  77                 return;
  78         }
  79
  80         child_binding_handle = idmap_child_handle();
  81
  82         subreq = dcerpc_wbint_AllocateUid_send(state,
  83                                                state->ev,
  84                                                child_binding_handle,
  85                                                &state->uid);
  86         if (tevent_req_nomem(subreq, req)) {
  87                 return;
  88         }
  89         tevent_req_set_callback(subreq, winbindd_allocate_uid_done, req);
  90 }
  91
  92 static void winbindd_allocate_uid_done(struct tevent_req *subreq)
  93 {
  94         struct tevent_req *req = tevent_req_callback_data(
  95                 subreq, struct tevent_req);
  96         struct winbindd_allocate_uid_state *state = tevent_req_data(
  97                 req, struct winbindd_allocate_uid_state);
  98         NTSTATUS status, result;
  99
 100         status = dcerpc_wbint_AllocateUid_recv(subreq, state, &result);
 101         TALLOC_FREE(subreq);
 102         if (any_nt_status_not_ok(status, result, &status)) {
 103                 tevent_req_nterror(req, status);
 104                 return;
 105         }
 106         tevent_req_done(req);
 107 }
 108
 109 NTSTATUS winbindd_allocate_uid_recv(struct tevent_req *req,
 110                                     struct winbindd_response *response)
 111 {
 112         struct winbindd_allocate_uid_state *state = tevent_req_data(
 113                 req, struct winbindd_allocate_uid_state);
 114         NTSTATUS status;
 115
 116         if (tevent_req_is_nterror(req, &status)) {
 117                 DEBUG(5, ("Could not allocate uid: %s\n", nt_errstr(status)));
 118                 return status;
 119         }
 120         response->data.uid = state->uid;
 121         return NT_STATUS_OK;
 122 }