source3/winbindd/wb_next_pwent.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async next_pwent
   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
  24 struct wb_next_pwent_state {
  25         struct tevent_context *ev;
  26         struct getpwent_state *gstate;
  27         struct winbindd_pw *pw;
  28 };
  29
  30 static void wb_next_pwent_fetch_done(struct tevent_req *subreq);
  31 static void wb_next_pwent_fill_done(struct tevent_req *subreq);
  32
  33 struct tevent_req *wb_next_pwent_send(TALLOC_CTX *mem_ctx,
  34                                       struct tevent_context *ev,
  35                                       struct getpwent_state *gstate,
  36                                       struct winbindd_pw *pw)
  37 {
  38         struct tevent_req *req, *subreq;
  39         struct wb_next_pwent_state *state;
  40
  41         req = tevent_req_create(mem_ctx, &state, struct wb_next_pwent_state);
  42         if (req == NULL) {
  43                 return NULL;
  44         }
  45         state->ev = ev;
  46         state->gstate = gstate;
  47         state->pw = pw;
  48
  49         if (state->gstate->next_user >= state->gstate->num_users) {
  50                 TALLOC_FREE(state->gstate->users);
  51
  52                 if (state->gstate->domain == NULL) {
  53                         state->gstate->domain = domain_list();
  54                 } else {
  55                         state->gstate->domain = state->gstate->domain->next;
  56                 }
  57
  58                 if ((state->gstate->domain != NULL)
  59                     && sid_check_is_domain(&state->gstate->domain->sid)) {
  60                         state->gstate->domain = state->gstate->domain->next;
  61                 }
  62
  63                 if (state->gstate->domain == NULL) {
  64                         tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
  65                         return tevent_req_post(req, ev);
  66                 }
  67                 subreq = wb_query_user_list_send(state, state->ev,
  68                                                  state->gstate->domain);
  69                 if (tevent_req_nomem(subreq, req)) {
  70                         return tevent_req_post(req, ev);
  71                 }
  72                 tevent_req_set_callback(subreq, wb_next_pwent_fetch_done, req);
  73                 return req;
  74         }
  75
  76         subreq = wb_fill_pwent_send(
  77                 state, state->ev,
  78                 &state->gstate->users[state->gstate->next_user],
  79                 state->pw);
  80         if (tevent_req_nomem(subreq, req)) {
  81                 return tevent_req_post(req, ev);
  82         }
  83         tevent_req_set_callback(subreq, wb_next_pwent_fill_done, req);
  84         return req;
  85 }
  86
  87 static void wb_next_pwent_fetch_done(struct tevent_req *subreq)
  88 {
  89         struct tevent_req *req = tevent_req_callback_data(
  90                 subreq, struct tevent_req);
  91         struct wb_next_pwent_state *state = tevent_req_data(
  92                 req, struct wb_next_pwent_state);
  93         NTSTATUS status;
  94
  95         status = wb_query_user_list_recv(subreq, state->gstate,
  96                                          &state->gstate->num_users,
  97                                          &state->gstate->users);
  98         TALLOC_FREE(subreq);
  99         if (!NT_STATUS_IS_OK(status)) {
 100                 /* Ignore errors here, just log it */
 101                 DEBUG(10, ("query_user_list for domain %s returned %s\n",
 102                            state->gstate->domain->name,
 103                            nt_errstr(status)));
 104                 state->gstate->num_users = 0;
 105         }
 106
 107         if (state->gstate->num_users == 0) {
 108                 state->gstate->domain = state->gstate->domain->next;
 109
 110                 if ((state->gstate->domain != NULL)
 111                     && sid_check_is_domain(&state->gstate->domain->sid)) {
 112                         state->gstate->domain = state->gstate->domain->next;
 113                 }
 114
 115                 if (state->gstate->domain == NULL) {
 116                         tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
 117                         return;
 118                 }
 119                 subreq = wb_query_user_list_send(state, state->ev,
 120                                                  state->gstate->domain);
 121                 if (tevent_req_nomem(subreq, req)) {
 122                         return;
 123                 }
 124                 tevent_req_set_callback(subreq, wb_next_pwent_fetch_done, req);
 125                 return;
 126         }
 127
 128         state->gstate->next_user = 0;
 129
 130         subreq = wb_fill_pwent_send(
 131                 state, state->ev,
 132                 &state->gstate->users[state->gstate->next_user],
 133                 state->pw);
 134         if (tevent_req_nomem(subreq, req)) {
 135                 return;
 136         }
 137         tevent_req_set_callback(subreq, wb_next_pwent_fill_done, req);
 138 }
 139
 140 static void wb_next_pwent_fill_done(struct tevent_req *subreq)
 141 {
 142         struct tevent_req *req = tevent_req_callback_data(
 143                 subreq, struct tevent_req);
 144         struct wb_next_pwent_state *state = tevent_req_data(
 145                 req, struct wb_next_pwent_state);
 146         NTSTATUS status;
 147
 148         status = wb_fill_pwent_recv(subreq);
 149         TALLOC_FREE(subreq);
 150         if (!NT_STATUS_IS_OK(status)) {
 151                 tevent_req_nterror(req, status);
 152                 return;
 153         }
 154         state->gstate->next_user += 1;
 155         tevent_req_done(req);
 156 }
 157
 158 NTSTATUS wb_next_pwent_recv(struct tevent_req *req)
 159 {
 160         return tevent_req_simple_recv_ntstatus(req);
 161 }