source3/winbindd/winbindd_list_groups.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_LIST_GROUPS
   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
  24 struct winbindd_list_groups_domstate {
  25         struct tevent_req *subreq;
  26         struct winbindd_domain *domain;
  27         struct wbint_Principals groups;
  28 };
  29
  30 struct winbindd_list_groups_state {
  31         int num_received;
  32         /* All domains */
  33         int num_domains;
  34         struct winbindd_list_groups_domstate *domains;
  35 };
  36
  37 static void winbindd_list_groups_done(struct tevent_req *subreq);
  38
  39 struct tevent_req *winbindd_list_groups_send(TALLOC_CTX *mem_ctx,
  40                                              struct tevent_context *ev,
  41                                              struct winbindd_cli_state *cli,
  42                                              struct winbindd_request *request)
  43 {
  44         struct tevent_req *req;
  45         struct winbindd_list_groups_state *state;
  46         struct winbindd_domain *domain;
  47         int i;
  48
  49         req = tevent_req_create(mem_ctx, &state,
  50                                 struct winbindd_list_groups_state);
  51         if (req == NULL) {
  52                 return NULL;
  53         }
  54
  55         if (request->wb_flags & WBFLAG_FROM_NSS && !lp_winbind_enum_groups()) {
  56                 tevent_req_done(req);
  57                 return tevent_req_post(req, ev);
  58         }
  59
  60         /* Ensure null termination */
  61         request->domain_name[sizeof(request->domain_name)-1]='\0';
  62
  63         DEBUG(3, ("list_groups %s\n", request->domain_name));
  64
  65         if (request->domain_name[0] != '\0') {
  66                 state->num_domains = 1;
  67         } else {
  68                 state->num_domains = 0;
  69                 for (domain = domain_list(); domain; domain = domain->next) {
  70                         state->num_domains += 1;
  71                 }
  72         }
  73
  74         state->domains = talloc_array(state,
  75                                       struct winbindd_list_groups_domstate,
  76                                       state->num_domains);
  77         if (tevent_req_nomem(state->domains, req)) {
  78                 return tevent_req_post(req, ev);
  79         }
  80
  81         if (request->domain_name[0] != '\0') {
  82                 ZERO_STRUCT(state->domains[0].groups);
  83
  84                 state->domains[0].domain = find_domain_from_name_noinit(
  85                         request->domain_name);
  86                 if (state->domains[0].domain == NULL) {
  87                         tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
  88                         return tevent_req_post(req, ev);
  89                 }
  90         } else {
  91                 i = 0;
  92                 for (domain = domain_list(); domain; domain = domain->next) {
  93                         ZERO_STRUCT(state->domains[i].groups);
  94
  95                         state->domains[i].domain = domain;
  96                         i++;
  97                 }
  98         }
  99
 100         for (i=0; i<state->num_domains; i++) {
 101                 struct winbindd_list_groups_domstate *d = &state->domains[i];
 102
 103                 d->subreq = dcerpc_wbint_QueryGroupList_send(
 104                         state->domains, ev, dom_child_handle(d->domain),
 105                         &d->groups);
 106                 if (tevent_req_nomem(d->subreq, req)) {
 107                         TALLOC_FREE(state->domains);
 108                         return tevent_req_post(req, ev);
 109                 }
 110                 tevent_req_set_callback(d->subreq, winbindd_list_groups_done,
 111                                         req);
 112         }
 113         state->num_received = 0;
 114         return req;
 115 }
 116
 117 static void winbindd_list_groups_done(struct tevent_req *subreq)
 118 {
 119         struct tevent_req *req = tevent_req_callback_data(
 120                 subreq, struct tevent_req);
 121         struct winbindd_list_groups_state *state = tevent_req_data(
 122                 req, struct winbindd_list_groups_state);
 123         NTSTATUS status, result;
 124         int i;
 125
 126         status = dcerpc_wbint_QueryGroupList_recv(subreq, state->domains,
 127                                                   &result);
 128
 129         for (i=0; i<state->num_domains; i++) {
 130                 if (subreq == state->domains[i].subreq) {
 131                         break;
 132                 }
 133         }
 134         if (i < state->num_domains) {
 135                 struct winbindd_list_groups_domstate *d = &state->domains[i];
 136
 137                 DEBUG(10, ("Domain %s returned %d groups\n", d->domain->name,
 138                            d->groups.num_principals));
 139
 140                 d->subreq = NULL;
 141
 142                 if (!NT_STATUS_IS_OK(status) || !NT_STATUS_IS_OK(result)) {
 143                         DEBUG(10, ("list_groups for domain %s failed\n",
 144                                    d->domain->name));
 145                         d->groups.num_principals = 0;
 146                 }
 147         }
 148
 149         TALLOC_FREE(subreq);
 150
 151         state->num_received += 1;
 152
 153         if (state->num_received >= state->num_domains) {
 154                 tevent_req_done(req);
 155         }
 156 }
 157
 158 NTSTATUS winbindd_list_groups_recv(struct tevent_req *req,
 159                                    struct winbindd_response *response)
 160 {
 161         struct winbindd_list_groups_state *state = tevent_req_data(
 162                 req, struct winbindd_list_groups_state);
 163         NTSTATUS status;
 164         char *result;
 165         int i;
 166         uint32_t j, num_entries = 0;
 167         size_t len;
 168
 169         if (tevent_req_is_nterror(req, &status)) {
 170                 return status;
 171         }
 172
 173         len = 0;
 174         response->data.num_entries = 0;
 175         for (i=0; i<state->num_domains; i++) {
 176                 struct winbindd_list_groups_domstate *d = &state->domains[i];
 177
 178                 for (j=0; j<d->groups.num_principals; j++) {
 179                         const char *name;
 180                         name = fill_domain_username_talloc(response, d->domain->name,
 181                                              d->groups.principals[j].name,
 182                                              True);
 183                         if (name == NULL) {
 184                                 return NT_STATUS_NO_MEMORY;
 185                         }
 186                         len += strlen(name)+1;
 187                 }
 188                 response->data.num_entries += d->groups.num_principals;
 189         }
 190
 191         result = talloc_array(response, char, len+1);
 192         if (result == 0) {
 193                 return NT_STATUS_NO_MEMORY;
 194         }
 195
 196         len = 0;
 197         for (i=0; i<state->num_domains; i++) {
 198                 struct winbindd_list_groups_domstate *d = &state->domains[i];
 199
 200                 for (j=0; j<d->groups.num_principals; j++) {
 201                         const char *name;
 202                         size_t this_len;
 203                         name = fill_domain_username_talloc(response, d->domain->name,
 204                                              d->groups.principals[j].name,
 205                                              True);
 206                         if (name == NULL) {
 207                                 return NT_STATUS_NO_MEMORY;
 208                         }
 209                         this_len = strlen(name);
 210                         memcpy(result+len, name, this_len);
 211                         len += this_len;
 212                         result[len] = ',';
 213                         len += 1;
 214                         num_entries++;
 215                 }
 216         }
 217         result[len-1] = '\0';
 218
 219         response->data.num_entries = num_entries;
 220         response->extra_data.data = result;
 221         response->length += len;
 222
 223         return NT_STATUS_OK;
 224 }