source3/winbindd/winbindd_list_users.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_LIST_USERS
   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 "lib/util/strv.h"
  24
  25 struct winbindd_list_users_domstate {
  26         struct tevent_req *subreq;
  27         struct winbindd_domain *domain;
  28         char *users;
  29 };
  30
  31 struct winbindd_list_users_state {
  32         size_t num_received;
  33         /* All domains */
  34         size_t num_domains;
  35         struct winbindd_list_users_domstate *domains;
  36 };
  37
  38 static void winbindd_list_users_done(struct tevent_req *subreq);
  39
  40 struct tevent_req *winbindd_list_users_send(TALLOC_CTX *mem_ctx,
  41                                             struct tevent_context *ev,
  42                                             struct winbindd_cli_state *cli,
  43                                             struct winbindd_request *request)
  44 {
  45         struct tevent_req *req;
  46         struct winbindd_list_users_state *state;
  47         struct winbindd_domain *domain;
  48         size_t i;
  49
  50         req = tevent_req_create(mem_ctx, &state,
  51                                 struct winbindd_list_users_state);
  52         if (req == NULL) {
  53                 return NULL;
  54         }
  55
  56         /* Ensure null termination */
  57         request->domain_name[sizeof(request->domain_name)-1]='\0';
  58
  59         DEBUG(3, ("list_users %s\n", request->domain_name));
  60
  61         if (request->domain_name[0] != '\0') {
  62                 state->num_domains = 1;
  63         } else {
  64                 state->num_domains = 0;
  65                 for (domain = domain_list(); domain; domain = domain->next) {
  66                         state->num_domains += 1;
  67                 }
  68         }
  69
  70         state->domains = talloc_array(state,
  71                                       struct winbindd_list_users_domstate,
  72                                       state->num_domains);
  73         if (tevent_req_nomem(state->domains, req)) {
  74                 return tevent_req_post(req, ev);
  75         }
  76
  77         if (request->domain_name[0] != '\0') {
  78                 state->domains[0].domain = find_domain_from_name_noinit(
  79                         request->domain_name);
  80                 if (state->domains[0].domain == NULL) {
  81                         tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
  82                         return tevent_req_post(req, ev);
  83                 }
  84         } else {
  85                 i = 0;
  86                 for (domain = domain_list(); domain; domain = domain->next) {
  87                         state->domains[i++].domain = domain;
  88                 }
  89         }
  90
  91         for (i=0; i<state->num_domains; i++) {
  92                 struct winbindd_list_users_domstate *d = &state->domains[i];
  93
  94                 d->subreq = wb_query_user_list_send(
  95                         state->domains, ev, d->domain);
  96                 if (tevent_req_nomem(d->subreq, req)) {
  97                         TALLOC_FREE(state->domains);
  98                         return tevent_req_post(req, ev);
  99                 }
 100                 tevent_req_set_callback(d->subreq, winbindd_list_users_done,
 101                                         req);
 102         }
 103         state->num_received = 0;
 104         return req;
 105 }
 106
 107 static void winbindd_list_users_done(struct tevent_req *subreq)
 108 {
 109         struct tevent_req *req = tevent_req_callback_data(
 110                 subreq, struct tevent_req);
 111         struct winbindd_list_users_state *state = tevent_req_data(
 112                 req, struct winbindd_list_users_state);
 113         struct winbindd_list_users_domstate *d;
 114         NTSTATUS status;
 115         size_t i;
 116
 117         for (i=0; i<state->num_domains; i++) {
 118                 if (subreq == state->domains[i].subreq) {
 119                         break;
 120                 }
 121         }
 122         if (i == state->num_domains) {
 123                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
 124                 return;
 125         }
 126
 127         d = &state->domains[i];
 128
 129         status = wb_query_user_list_recv(subreq, state->domains,
 130                                          &d->users);
 131         TALLOC_FREE(subreq);
 132         if (!NT_STATUS_IS_OK(status)) {
 133                 /*
 134                  * Just skip this domain
 135                  */
 136                 d->users = NULL;
 137         }
 138
 139         state->num_received += 1;
 140
 141         if (state->num_received >= state->num_domains) {
 142                 tevent_req_done(req);
 143         }
 144 }
 145
 146 NTSTATUS winbindd_list_users_recv(struct tevent_req *req,
 147                                   struct winbindd_response *response)
 148 {
 149         struct winbindd_list_users_state *state = tevent_req_data(
 150                 req, struct winbindd_list_users_state);
 151         NTSTATUS status;
 152         char *result;
 153         size_t i, len;
 154
 155         if (tevent_req_is_nterror(req, &status)) {
 156                 return status;
 157         }
 158
 159         result = NULL;
 160
 161         for (i=0; i<state->num_domains; i++) {
 162                 struct winbindd_list_users_domstate *d = &state->domains[i];
 163                 int ret;
 164
 165                 if (d->users == NULL) {
 166                         continue;
 167                 }
 168
 169                 ret = strv_append(state, &result, d->users);
 170                 if (ret != 0) {
 171                         return map_nt_error_from_unix(ret);
 172                 }
 173         }
 174
 175         len = talloc_get_size(result);
 176
 177         response->extra_data.data = talloc_steal(response, result);
 178         response->length += len;
 179         response->data.num_entries = 0;
 180
 181         if (result != NULL && len >= 1) {
 182                 len -= 1;
 183                 response->data.num_entries = 1;
 184
 185                 for (i=0; i<len; i++) {
 186                         if (result[i] == '\0') {
 187                                 result[i] = ',';
 188                                 response->data.num_entries += 1;
 189                         }
 190                 }
 191         }
 192
 193         return NT_STATUS_OK;
 194 }