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_winbind_c.h"
  23 #include "passdb/machine_sid.h"
  24
  25 struct wb_next_pwent_state {
  26         struct tevent_context *ev;
  27         struct getpwent_state *gstate;
  28         struct winbindd_pw *pw;
  29 };
  30
  31 static void wb_next_pwent_fetch_done(struct tevent_req *subreq);
  32 static void wb_next_pwent_fill_done(struct tevent_req *subreq);
  33
  34 static void wb_next_pwent_send_do(struct tevent_req *req,
  35                                   struct wb_next_pwent_state *state)
  36 {
  37         struct tevent_req *subreq;
  38
  39         if (state->gstate->next_user >= state->gstate->num_users) {
  40                 TALLOC_FREE(state->gstate->users);
  41
  42                 state->gstate->domain = wb_next_domain(state->gstate->domain);
  43                 if (state->gstate->domain == NULL) {
  44                         tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
  45                         return;
  46                 }
  47
  48                 subreq = wb_query_user_list_send(state, state->ev,
  49                                                  state->gstate->domain);
  50                 if (tevent_req_nomem(subreq, req)) {
  51                         return;
  52                 }
  53
  54                 tevent_req_set_callback(subreq, wb_next_pwent_fetch_done, req);
  55                 return;
  56         }
  57
  58         subreq = wb_fill_pwent_send(state, state->ev,
  59                                 &state->gstate->users[state->gstate->next_user],
  60                                 state->pw);
  61         if (tevent_req_nomem(subreq, req)) {
  62                 return;
  63         }
  64
  65         tevent_req_set_callback(subreq, wb_next_pwent_fill_done, req);
  66 }
  67
  68 struct tevent_req *wb_next_pwent_send(TALLOC_CTX *mem_ctx,
  69                                       struct tevent_context *ev,
  70                                       struct getpwent_state *gstate,
  71                                       struct winbindd_pw *pw)
  72 {
  73         struct tevent_req *req;
  74         struct wb_next_pwent_state *state;
  75
  76         req = tevent_req_create(mem_ctx, &state, struct wb_next_pwent_state);
  77         if (req == NULL) {
  78                 return NULL;
  79         }
  80         state->ev = ev;
  81         state->gstate = gstate;
  82         state->pw = pw;
  83
  84         wb_next_pwent_send_do(req, state);
  85         if (!tevent_req_is_in_progress(req)) {
  86                 return tevent_req_post(req, ev);
  87         }
  88
  89         return req;
  90 }
  91
  92 static void wb_next_pwent_fetch_done(struct tevent_req *subreq)
  93 {
  94         struct tevent_req *req = tevent_req_callback_data(
  95                 subreq, struct tevent_req);
  96         struct wb_next_pwent_state *state = tevent_req_data(
  97                 req, struct wb_next_pwent_state);
  98         NTSTATUS status;
  99
 100         status = wb_query_user_list_recv(subreq, state->gstate,
 101                                          &state->gstate->num_users,
 102                                          &state->gstate->users);
 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                 state->gstate->num_users = 0;
 110         }
 111
 112         state->gstate->next_user = 0;
 113
 114         wb_next_pwent_send_do(req, state);
 115 }
 116
 117 static void wb_next_pwent_fill_done(struct tevent_req *subreq)
 118 {
 119         struct tevent_req *req = tevent_req_callback_data(
 120                 subreq, struct tevent_req);
 121         struct wb_next_pwent_state *state = tevent_req_data(
 122                 req, struct wb_next_pwent_state);
 123         NTSTATUS status;
 124
 125         status = wb_fill_pwent_recv(subreq);
 126         TALLOC_FREE(subreq);
 127         /*
 128          * When you try to enumerate users with 'getent passwd' and the user
 129          * doesn't have a uid set we should just move on.
 130          */
 131         if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
 132                 state->gstate->next_user += 1;
 133
 134                 wb_next_pwent_send_do(req, state);
 135
 136                 return;
 137         } else if (tevent_req_nterror(req, status)) {
 138                 return;
 139         }
 140         state->gstate->next_user += 1;
 141         tevent_req_done(req);
 142 }
 143
 144 NTSTATUS wb_next_pwent_recv(struct tevent_req *req)
 145 {
 146         return tevent_req_simple_recv_ntstatus(req);
 147 }