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_winbind_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 winbindd_gr *gr;
  30         struct db_context *members;
  31 };
  32
  33 static void wb_next_grent_fetch_done(struct tevent_req *subreq);
  34 static void wb_next_grent_getgrsid_done(struct tevent_req *subreq);
  35
  36 static void wb_next_grent_send_do(struct tevent_req *req,
  37                                   struct wb_next_grent_state *state)
  38 {
  39         struct tevent_req *subreq;
  40
  41         if (state->gstate->next_group >= state->gstate->num_groups) {
  42                 TALLOC_FREE(state->gstate->groups);
  43
  44                 state->gstate->domain = wb_next_domain(state->gstate->domain);
  45                 if (state->gstate->domain == NULL) {
  46                         tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
  47                         return;
  48                 }
  49
  50                 subreq = wb_query_group_list_send(state, state->ev,
  51                                                   state->gstate->domain);
  52                 if (tevent_req_nomem(subreq, req)) {
  53                         return;
  54                 }
  55                 tevent_req_set_callback(subreq, wb_next_grent_fetch_done, req);
  56                 return;
  57         }
  58
  59         subreq = wb_getgrsid_send(
  60                 state, state->ev,
  61                 &state->gstate->groups[state->gstate->next_group].sid,
  62                 state->max_nesting);
  63         if (tevent_req_nomem(subreq, req)) {
  64                 return;
  65         }
  66         tevent_req_set_callback(subreq, wb_next_grent_getgrsid_done, req);
  67 }
  68
  69 struct tevent_req *wb_next_grent_send(TALLOC_CTX *mem_ctx,
  70                                       struct tevent_context *ev,
  71                                       int max_nesting,
  72                                       struct getgrent_state *gstate,
  73                                       struct winbindd_gr *gr)
  74 {
  75         struct tevent_req *req;
  76         struct wb_next_grent_state *state;
  77
  78         req = tevent_req_create(mem_ctx, &state, struct wb_next_grent_state);
  79         if (req == NULL) {
  80                 return NULL;
  81         }
  82         state->ev = ev;
  83         state->gstate = gstate;
  84         state->gr = gr;
  85         state->max_nesting = max_nesting;
  86
  87         wb_next_grent_send_do(req, state);
  88         if (!tevent_req_is_in_progress(req)) {
  89                 return tevent_req_post(req, ev);
  90         }
  91
  92         return req;
  93 }
  94
  95 static void wb_next_grent_fetch_done(struct tevent_req *subreq)
  96 {
  97         struct tevent_req *req = tevent_req_callback_data(
  98                 subreq, struct tevent_req);
  99         struct wb_next_grent_state *state = tevent_req_data(
 100                 req, struct wb_next_grent_state);
 101         NTSTATUS status;
 102
 103         status = wb_query_group_list_recv(subreq, state->gstate,
 104                                           &state->gstate->num_groups,
 105                                           &state->gstate->groups);
 106         TALLOC_FREE(subreq);
 107         if (!NT_STATUS_IS_OK(status)) {
 108                 /* Ignore errors here, just log it */
 109                 DEBUG(10, ("query_group_list for domain %s returned %s\n",
 110                            state->gstate->domain->name, nt_errstr(status)));
 111                 state->gstate->num_groups = 0;
 112         }
 113
 114         state->gstate->next_group = 0;
 115
 116         wb_next_grent_send_do(req, state);
 117 }
 118
 119 static void wb_next_grent_getgrsid_done(struct tevent_req *subreq)
 120 {
 121         struct tevent_req *req = tevent_req_callback_data(
 122                 subreq, struct tevent_req);
 123         struct wb_next_grent_state *state = tevent_req_data(
 124                 req, struct wb_next_grent_state);
 125         const char *domname, *name;
 126         NTSTATUS status;
 127
 128         status = wb_getgrsid_recv(subreq, talloc_tos(), &domname, &name,
 129                                   &state->gr->gr_gid, &state->members);
 130         TALLOC_FREE(subreq);
 131
 132         if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
 133                 state->gstate->next_group += 1;
 134
 135                 wb_next_grent_send_do(req, state);
 136
 137                 return;
 138         } else if (tevent_req_nterror(req, status)) {
 139                 return;
 140         }
 141
 142         if (!fill_grent(talloc_tos(), state->gr, domname, name,
 143                         state->gr->gr_gid)) {
 144                 DEBUG(5, ("fill_grent failed\n"));
 145                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
 146                 return;
 147         }
 148         state->gstate->next_group += 1;
 149         tevent_req_done(req);
 150 }
 151
 152 NTSTATUS wb_next_grent_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
 153                             struct db_context **members)
 154 {
 155         struct wb_next_grent_state *state = tevent_req_data(
 156                 req, struct wb_next_grent_state);
 157         NTSTATUS status;
 158
 159         if (tevent_req_is_nterror(req, &status)) {
 160                 return status;
 161         }
 162         *members = talloc_move(mem_ctx, &state->members);
 163         return NT_STATUS_OK;
 164 }