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         if (request->wb_flags & WBFLAG_FROM_NSS && !lp_winbind_enum_users()) {
  57                 tevent_req_done(req);
  58                 return tevent_req_post(req, ev);
  59         }
  60
  61         /* Ensure null termination */
  62         request->domain_name[sizeof(request->domain_name)-1]='\0';
  63
  64         DEBUG(3, ("list_users %s\n", request->domain_name));
  65
  66         if (request->domain_name[0] != '\0') {
  67                 state->num_domains = 1;
  68         } else {
  69                 state->num_domains = 0;
  70                 for (domain = domain_list(); domain; domain = domain->next) {
  71                         state->num_domains += 1;
  72                 }
  73         }
  74
  75         state->domains = talloc_array(state,
  76                                       struct winbindd_list_users_domstate,
  77                                       state->num_domains);
  78         if (tevent_req_nomem(state->domains, req)) {
  79                 return tevent_req_post(req, ev);
  80         }
  81
  82         if (request->domain_name[0] != '\0') {
  83                 state->domains[0].domain = find_domain_from_name_noinit(
  84                         request->domain_name);
  85                 if (state->domains[0].domain == NULL) {
  86                         tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
  87                         return tevent_req_post(req, ev);
  88                 }
  89         } else {
  90                 i = 0;
  91                 for (domain = domain_list(); domain; domain = domain->next) {
  92                         state->domains[i++].domain = domain;
  93                 }
  94         }
  95
  96         for (i=0; i<state->num_domains; i++) {
  97                 struct winbindd_list_users_domstate *d = &state->domains[i];
  98
  99                 d->subreq = wb_query_user_list_send(
 100                         state->domains, ev, d->domain);
 101                 if (tevent_req_nomem(d->subreq, req)) {
 102                         TALLOC_FREE(state->domains);
 103                         return tevent_req_post(req, ev);
 104                 }
 105                 tevent_req_set_callback(d->subreq, winbindd_list_users_done,
 106                                         req);
 107         }
 108         state->num_received = 0;
 109         return req;
 110 }
 111
 112 static void winbindd_list_users_done(struct tevent_req *subreq)
 113 {
 114         struct tevent_req *req = tevent_req_callback_data(
 115                 subreq, struct tevent_req);
 116         struct winbindd_list_users_state *state = tevent_req_data(
 117                 req, struct winbindd_list_users_state);
 118         struct winbindd_list_users_domstate *d;
 119         NTSTATUS status;
 120         size_t i;
 121
 122         for (i=0; i<state->num_domains; i++) {
 123                 if (subreq == state->domains[i].subreq) {
 124                         break;
 125                 }
 126         }
 127         if (i == state->num_domains) {
 128                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
 129                 return;
 130         }
 131
 132         d = &state->domains[i];
 133
 134         status = wb_query_user_list_recv(subreq, state->domains,
 135                                          &d->users);
 136         TALLOC_FREE(subreq);
 137         if (!NT_STATUS_IS_OK(status)) {
 138                 /*
 139                  * Just skip this domain
 140                  */
 141                 d->users = NULL;
 142         }
 143
 144         state->num_received += 1;
 145
 146         if (state->num_received >= state->num_domains) {
 147                 tevent_req_done(req);
 148         }
 149 }
 150
 151 NTSTATUS winbindd_list_users_recv(struct tevent_req *req,
 152                                   struct winbindd_response *response)
 153 {
 154         struct winbindd_list_users_state *state = tevent_req_data(
 155                 req, struct winbindd_list_users_state);
 156         NTSTATUS status;
 157         char *result;
 158         size_t i, len;
 159
 160         if (tevent_req_is_nterror(req, &status)) {
 161                 return status;
 162         }
 163
 164         result = NULL;
 165
 166         for (i=0; i<state->num_domains; i++) {
 167                 struct winbindd_list_users_domstate *d = &state->domains[i];
 168                 int ret;
 169
 170                 if (d->users == NULL) {
 171                         continue;
 172                 }
 173
 174                 ret = strv_append(state, &result, d->users);
 175                 if (ret != 0) {
 176                         return map_nt_error_from_unix(ret);
 177                 }
 178         }
 179
 180         len = talloc_get_size(result);
 181
 182         response->extra_data.data = talloc_steal(response, result);
 183         response->length += len;
 184         response->data.num_entries = 0;
 185
 186         if (result != NULL && len >= 1) {
 187                 len -= 1;
 188                 response->data.num_entries = 1;
 189
 190                 for (i=0; i<len; i++) {
 191                         if (result[i] == '\0') {
 192                                 result[i] = ',';
 193                                 response->data.num_entries += 1;
 194                         }
 195                 }
 196         }
 197
 198         return NT_STATUS_OK;
 199 }