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/cli_wbint.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                         tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
  60                         return tevent_req_post(req, ev);
  61                 }
  62                 subreq = wb_query_user_list_send(state, state->ev,
  63                                                  state->gstate->domain);
  64                 if (tevent_req_nomem(subreq, req)) {
  65                         return tevent_req_post(req, ev);
  66                 }
  67                 tevent_req_set_callback(subreq, wb_next_pwent_fetch_done, req);
  68                 return req;
  69         }
  70
  71         subreq = wb_fill_pwent_send(
  72                 state, state->ev,
  73                 &state->gstate->users[state->gstate->next_user],
  74                 state->pw);
  75         if (tevent_req_nomem(subreq, req)) {
  76                 return tevent_req_post(req, ev);
  77         }
  78         tevent_req_set_callback(subreq, wb_next_pwent_fill_done, req);
  79         return req;
  80 }
  81
  82 static void wb_next_pwent_fetch_done(struct tevent_req *subreq)
  83 {
  84         struct tevent_req *req = tevent_req_callback_data(
  85                 subreq, struct tevent_req);
  86         struct wb_next_pwent_state *state = tevent_req_data(
  87                 req, struct wb_next_pwent_state);
  88         NTSTATUS status;
  89
  90         status = wb_query_user_list_recv(subreq, state->gstate,
  91                                          &state->gstate->num_users,
  92                                          &state->gstate->users);
  93         TALLOC_FREE(subreq);
  94         if (!NT_STATUS_IS_OK(status)) {
  95                 /* Ignore errors here, just log it */
  96                 DEBUG(10, ("query_user_list for domain %s returned %s\n",
  97                            state->gstate->domain->name,
  98                            nt_errstr(status)));
  99                 state->gstate->num_users = 0;
 100         }
 101
 102         if (state->gstate->num_users == 0) {
 103                 state->gstate->domain = state->gstate->domain->next;
 104                 if (state->gstate->domain == NULL) {
 105                         tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
 106                         return;
 107                 }
 108                 subreq = wb_query_user_list_send(state, state->ev,
 109                                                  state->gstate->domain);
 110                 if (tevent_req_nomem(subreq, req)) {
 111                         return;
 112                 }
 113                 tevent_req_set_callback(subreq, wb_next_pwent_fetch_done, req);
 114                 return;
 115         }
 116
 117         state->gstate->next_user = 0;
 118
 119         subreq = wb_fill_pwent_send(
 120                 state, state->ev,
 121                 &state->gstate->users[state->gstate->next_user],
 122                 state->pw);
 123         if (tevent_req_nomem(subreq, req)) {
 124                 return;
 125         }
 126         tevent_req_set_callback(subreq, wb_next_pwent_fill_done, req);
 127 }
 128
 129 static void wb_next_pwent_fill_done(struct tevent_req *subreq)
 130 {
 131         struct tevent_req *req = tevent_req_callback_data(
 132                 subreq, struct tevent_req);
 133         struct wb_next_pwent_state *state = tevent_req_data(
 134                 req, struct wb_next_pwent_state);
 135         NTSTATUS status;
 136
 137         status = wb_fill_pwent_recv(subreq);
 138         TALLOC_FREE(subreq);
 139         if (!NT_STATUS_IS_OK(status)) {
 140                 tevent_req_nterror(req, status);
 141                 return;
 142         }
 143         state->gstate->next_user += 1;
 144         tevent_req_done(req);
 145 }
 146
 147 NTSTATUS wb_next_pwent_recv(struct tevent_req *req)
 148 {
 149         return tevent_req_simple_recv_ntstatus(req);
 150 }