source3/winbindd/wb_next_grent.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async next_grent
   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_wbint_c.h"
  23 #include "passdb/machine_sid.h"
  24
  25 struct wb_next_grent_state {
  26         struct tevent_context *ev;
  27         int max_nesting;
  28         struct getgrent_state *gstate;
  29         struct wbint_Principals next_groups;
  30         struct winbindd_gr *gr;
  31         struct talloc_dict *members;
  32 };
  33
  34 static void wb_next_grent_fetch_done(struct tevent_req *subreq);
  35 static void wb_next_grent_getgrsid_done(struct tevent_req *subreq);
  36
  37 struct tevent_req *wb_next_grent_send(TALLOC_CTX *mem_ctx,
  38                                       struct tevent_context *ev,
  39                                       int max_nesting,
  40                                       struct getgrent_state *gstate,
  41                                       struct winbindd_gr *gr)
  42 {
  43         struct tevent_req *req, *subreq;
  44         struct wb_next_grent_state *state;
  45
  46         req = tevent_req_create(mem_ctx, &state, struct wb_next_grent_state);
  47         if (req == NULL) {
  48                 return NULL;
  49         }
  50         state->ev = ev;
  51         state->gstate = gstate;
  52         state->gr = gr;
  53         state->max_nesting = max_nesting;
  54
  55         if (state->gstate->next_group >= state->gstate->num_groups) {
  56                 TALLOC_FREE(state->gstate->groups);
  57
  58                 if (state->gstate->domain == NULL) {
  59                         state->gstate->domain = domain_list();
  60                 } else {
  61                         state->gstate->domain = state->gstate->domain->next;
  62                 }
  63
  64                 if ((state->gstate->domain != NULL)
  65                     && sid_check_is_our_sam(&state->gstate->domain->sid)) {
  66                         state->gstate->domain = state->gstate->domain->next;
  67                 }
  68
  69                 if (state->gstate->domain == NULL) {
  70                         tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
  71                         return tevent_req_post(req, ev);
  72                 }
  73                 subreq = dcerpc_wbint_QueryGroupList_send(
  74                         state, state->ev, dom_child_handle(state->gstate->domain),
  75                         &state->next_groups);
  76                 if (tevent_req_nomem(subreq, req)) {
  77                         return tevent_req_post(req, ev);
  78                 }
  79                 tevent_req_set_callback(subreq, wb_next_grent_fetch_done, req);
  80                 return req;
  81         }
  82
  83         subreq = wb_getgrsid_send(
  84                 state, state->ev,
  85                 &state->gstate->groups[state->gstate->next_group].sid,
  86                 state->max_nesting);
  87         if (tevent_req_nomem(subreq, req)) {
  88                 return tevent_req_post(req, ev);
  89         }
  90         tevent_req_set_callback(subreq, wb_next_grent_getgrsid_done, req);
  91         return req;
  92 }
  93
  94 static void wb_next_grent_fetch_done(struct tevent_req *subreq)
  95 {
  96         struct tevent_req *req = tevent_req_callback_data(
  97                 subreq, struct tevent_req);
  98         struct wb_next_grent_state *state = tevent_req_data(
  99                 req, struct wb_next_grent_state);
 100         NTSTATUS status, result;
 101
 102         status = dcerpc_wbint_QueryGroupList_recv(subreq, state, &result);
 103         TALLOC_FREE(subreq);
 104         if (tevent_req_nterror(req, status)) {
 105                 /* Ignore errors here, just log it */
 106                 DEBUG(10, ("query_user_list for domain %s returned %s\n",
 107                            state->gstate->domain->name,
 108                            nt_errstr(status)));
 109                 return;
 110         }
 111         if (!NT_STATUS_IS_OK(result)) {
 112                 /* Ignore errors here, just log it */
 113                 DEBUG(10, ("query_user_list for domain %s returned %s/%s\n",
 114                            state->gstate->domain->name,
 115                            nt_errstr(status), nt_errstr(result)));
 116                 tevent_req_nterror(req, result);
 117                 return;
 118         }
 119
 120         state->gstate->num_groups = state->next_groups.num_principals;
 121         state->gstate->groups = talloc_move(
 122                 state->gstate, &state->next_groups.principals);
 123
 124         if (state->gstate->num_groups == 0) {
 125                 state->gstate->domain = state->gstate->domain->next;
 126
 127                 if ((state->gstate->domain != NULL)
 128                     && sid_check_is_our_sam(&state->gstate->domain->sid)) {
 129                         state->gstate->domain = state->gstate->domain->next;
 130                 }
 131
 132                 if (state->gstate->domain == NULL) {
 133                         tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
 134                         return;
 135                 }
 136                 subreq = dcerpc_wbint_QueryGroupList_send(
 137                         state, state->ev, dom_child_handle(state->gstate->domain),
 138                         &state->next_groups);
 139                 if (tevent_req_nomem(subreq, req)) {
 140                         return;
 141                 }
 142                 tevent_req_set_callback(subreq, wb_next_grent_fetch_done, req);
 143                 return;
 144         }
 145
 146         state->gstate->next_group = 0;
 147
 148         subreq = wb_getgrsid_send(
 149                 state, state->ev,
 150                 &state->gstate->groups[state->gstate->next_group].sid,
 151                 state->max_nesting);
 152         if (tevent_req_nomem(subreq, req)) {
 153                 return;
 154         }
 155         tevent_req_set_callback(subreq, wb_next_grent_getgrsid_done, req);
 156         return;
 157 }
 158
 159 static void wb_next_grent_getgrsid_done(struct tevent_req *subreq)
 160 {
 161         struct tevent_req *req = tevent_req_callback_data(
 162                 subreq, struct tevent_req);
 163         struct wb_next_grent_state *state = tevent_req_data(
 164                 req, struct wb_next_grent_state);
 165         const char *domname, *name;
 166         NTSTATUS status;
 167
 168         status = wb_getgrsid_recv(subreq, talloc_tos(), &domname, &name,
 169                                   &state->gr->gr_gid, &state->members);
 170         TALLOC_FREE(subreq);
 171         if (tevent_req_nterror(req, status)) {
 172                 return;
 173         }
 174         if (!fill_grent(talloc_tos(), state->gr, domname, name,
 175                         state->gr->gr_gid)) {
 176                 DEBUG(5, ("fill_grent failed\n"));
 177                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
 178                 return;
 179         }
 180         state->gstate->next_group += 1;
 181         tevent_req_done(req);
 182 }
 183
 184 NTSTATUS wb_next_grent_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
 185                             struct talloc_dict **members)
 186 {
 187         struct wb_next_grent_state *state = tevent_req_data(
 188                 req, struct wb_next_grent_state);
 189         NTSTATUS status;
 190
 191         if (tevent_req_is_nterror(req, &status)) {
 192                 return status;
 193         }
 194         *members = talloc_move(mem_ctx, &state->members);
 195         return NT_STATUS_OK;
 196 }