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 "libcli/security/dom_sid.h"
  24 #include "passdb/machine_sid.h"
  25
  26 struct wb_next_pwent_state {
  27         struct tevent_context *ev;
  28         struct getpwent_state *gstate;
  29         struct dom_sid next_sid;
  30         struct winbindd_pw *pw;
  31 };
  32
  33 static void wb_next_pwent_fetch_done(struct tevent_req *subreq);
  34 static void wb_next_pwent_fill_done(struct tevent_req *subreq);
  35
  36 static void wb_next_pwent_send_do(struct tevent_req *req,
  37                                   struct wb_next_pwent_state *state)
  38 {
  39         struct tevent_req *subreq;
  40
  41         if (state->gstate->next_user >= state->gstate->rids.num_rids) {
  42                 TALLOC_FREE(state->gstate->rids.rids);
  43                 state->gstate->rids.num_rids = 0;
  44
  45                 state->gstate->domain = wb_next_domain(state->gstate->domain);
  46                 if (state->gstate->domain == NULL) {
  47                         tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
  48                         return;
  49                 }
  50
  51                 subreq = dcerpc_wbint_QueryUserRidList_send(
  52                         state, state->ev,
  53                         dom_child_handle(state->gstate->domain),
  54                         &state->gstate->rids);
  55                 if (tevent_req_nomem(subreq, req)) {
  56                         return;
  57                 }
  58
  59                 tevent_req_set_callback(subreq, wb_next_pwent_fetch_done, req);
  60                 return;
  61         }
  62
  63         sid_compose(&state->next_sid, &state->gstate->domain->sid,
  64                     state->gstate->rids.rids[state->gstate->next_user]);
  65
  66         subreq = wb_getpwsid_send(state, state->ev, &state->next_sid,
  67                                   state->pw);
  68         if (tevent_req_nomem(subreq, req)) {
  69                 return;
  70         }
  71
  72         tevent_req_set_callback(subreq, wb_next_pwent_fill_done, req);
  73 }
  74
  75 struct tevent_req *wb_next_pwent_send(TALLOC_CTX *mem_ctx,
  76                                       struct tevent_context *ev,
  77                                       struct getpwent_state *gstate,
  78                                       struct winbindd_pw *pw)
  79 {
  80         struct tevent_req *req;
  81         struct wb_next_pwent_state *state;
  82
  83         req = tevent_req_create(mem_ctx, &state, struct wb_next_pwent_state);
  84         if (req == NULL) {
  85                 return NULL;
  86         }
  87         state->ev = ev;
  88         state->gstate = gstate;
  89         state->pw = pw;
  90
  91         wb_next_pwent_send_do(req, state);
  92         if (!tevent_req_is_in_progress(req)) {
  93                 return tevent_req_post(req, ev);
  94         }
  95
  96         return req;
  97 }
  98
  99 static void wb_next_pwent_fetch_done(struct tevent_req *subreq)
 100 {
 101         struct tevent_req *req = tevent_req_callback_data(
 102                 subreq, struct tevent_req);
 103         struct wb_next_pwent_state *state = tevent_req_data(
 104                 req, struct wb_next_pwent_state);
 105         NTSTATUS status, result;
 106
 107         status = dcerpc_wbint_QueryUserRidList_recv(subreq, state->gstate,
 108                                                     &result);
 109         TALLOC_FREE(subreq);
 110         if (any_nt_status_not_ok(status, result, &status)) {
 111                 /* Ignore errors here, just log it */
 112                 DEBUG(10, ("query_user_list for domain %s returned %s\n",
 113                            state->gstate->domain->name,
 114                            nt_errstr(status)));
 115                 state->gstate->rids.num_rids = 0;
 116         }
 117
 118         state->gstate->next_user = 0;
 119
 120         wb_next_pwent_send_do(req, state);
 121 }
 122
 123 static void wb_next_pwent_fill_done(struct tevent_req *subreq)
 124 {
 125         struct tevent_req *req = tevent_req_callback_data(
 126                 subreq, struct tevent_req);
 127         struct wb_next_pwent_state *state = tevent_req_data(
 128                 req, struct wb_next_pwent_state);
 129         NTSTATUS status;
 130
 131         status = wb_getpwsid_recv(subreq);
 132         TALLOC_FREE(subreq);
 133         /*
 134          * When you try to enumerate users with 'getent passwd' and the user
 135          * doesn't have a uid set we should just move on.
 136          */
 137         if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
 138                 state->gstate->next_user += 1;
 139
 140                 wb_next_pwent_send_do(req, state);
 141
 142                 return;
 143         } else if (tevent_req_nterror(req, status)) {
 144                 return;
 145         }
 146         state->gstate->next_user += 1;
 147         tevent_req_done(req);
 148 }
 149
 150 NTSTATUS wb_next_pwent_recv(struct tevent_req *req)
 151 {
 152         return tevent_req_simple_recv_ntstatus(req);
 153 }