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_domain(&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 (!NT_STATUS_IS_OK(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                 tevent_req_nterror(req, status);
 110                 return;
 111         }
 112         if (!NT_STATUS_IS_OK(result)) {
 113                 /* Ignore errors here, just log it */
 114                 DEBUG(10, ("query_user_list for domain %s returned %s/%s\n",
 115                            state->gstate->domain->name,
 116                            nt_errstr(status), nt_errstr(result)));
 117                 tevent_req_nterror(req, result);
 118                 return;
 119         }
 120
 121         state->gstate->num_groups = state->next_groups.num_principals;
 122         state->gstate->groups = talloc_move(
 123                 state->gstate, &state->next_groups.principals);
 124
 125         if (state->gstate->num_groups == 0) {
 126                 state->gstate->domain = state->gstate->domain->next;
 127
 128                 if ((state->gstate->domain != NULL)
 129                     && sid_check_is_domain(&state->gstate->domain->sid)) {
 130                         state->gstate->domain = state->gstate->domain->next;
 131                 }
 132
 133                 if (state->gstate->domain == NULL) {
 134                         tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
 135                         return;
 136                 }
 137                 subreq = dcerpc_wbint_QueryGroupList_send(
 138                         state, state->ev, dom_child_handle(state->gstate->domain),
 139                         &state->next_groups);
 140                 if (tevent_req_nomem(subreq, req)) {
 141                         return;
 142                 }
 143                 tevent_req_set_callback(subreq, wb_next_grent_fetch_done, req);
 144                 return;
 145         }
 146
 147         state->gstate->next_group = 0;
 148
 149         subreq = wb_getgrsid_send(
 150                 state, state->ev,
 151                 &state->gstate->groups[state->gstate->next_group].sid,
 152                 state->max_nesting);
 153         if (tevent_req_nomem(subreq, req)) {
 154                 return;
 155         }
 156         tevent_req_set_callback(subreq, wb_next_grent_getgrsid_done, req);
 157         return;
 158 }
 159
 160 static void wb_next_grent_getgrsid_done(struct tevent_req *subreq)
 161 {
 162         struct tevent_req *req = tevent_req_callback_data(
 163                 subreq, struct tevent_req);
 164         struct wb_next_grent_state *state = tevent_req_data(
 165                 req, struct wb_next_grent_state);
 166         const char *domname, *name;
 167         NTSTATUS status;
 168
 169         status = wb_getgrsid_recv(subreq, talloc_tos(), &domname, &name,
 170                                   &state->gr->gr_gid, &state->members);
 171         TALLOC_FREE(subreq);
 172         if (!NT_STATUS_IS_OK(status)) {
 173                 tevent_req_nterror(req, status);
 174                 return;
 175         }
 176         if (!fill_grent(talloc_tos(), state->gr, domname, name,
 177                         state->gr->gr_gid)) {
 178                 DEBUG(5, ("fill_grent failed\n"));
 179                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
 180                 return;
 181         }
 182         state->gstate->next_group += 1;
 183         tevent_req_done(req);
 184 }
 185
 186 NTSTATUS wb_next_grent_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
 187                             struct talloc_dict **members)
 188 {
 189         struct wb_next_grent_state *state = tevent_req_data(
 190                 req, struct wb_next_grent_state);
 191         NTSTATUS status;
 192
 193         if (tevent_req_is_nterror(req, &status)) {
 194                 return status;
 195         }
 196         *members = talloc_move(mem_ctx, &state->members);
 197         return NT_STATUS_OK;
 198 }