source3/winbindd/winbindd_getsidaliases.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_GETSIDALIASES
   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
  23 struct winbindd_getsidaliases_state {
  24         struct dom_sid sid;
  25         uint32_t num_aliases;
  26         uint32_t *aliases;
  27 };
  28
  29 static void winbindd_getsidaliases_done(struct tevent_req *subreq);
  30
  31 struct tevent_req *winbindd_getsidaliases_send(TALLOC_CTX *mem_ctx,
  32                                                struct tevent_context *ev,
  33                                                struct winbindd_cli_state *cli,
  34                                                struct winbindd_request *request)
  35 {
  36         struct tevent_req *req, *subreq;
  37         struct winbindd_getsidaliases_state *state;
  38         struct winbindd_domain *domain;
  39         size_t num_sids;
  40         struct dom_sid *sids;
  41
  42         req = tevent_req_create(mem_ctx, &state,
  43                                 struct winbindd_getsidaliases_state);
  44         if (req == NULL) {
  45                 return NULL;
  46         }
  47
  48         /* Ensure null termination */
  49         request->data.sid[sizeof(request->data.sid)-1]='\0';
  50
  51         DEBUG(3, ("getsidaliases %s\n", request->data.sid));
  52
  53         if (!string_to_sid(&state->sid, request->data.sid)) {
  54                 DEBUG(1, ("Could not get convert sid %s from string\n",
  55                           request->data.sid));
  56                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  57                 return tevent_req_post(req, ev);
  58         }
  59
  60         domain = find_domain_from_sid_noinit(&state->sid);
  61         if (domain == NULL) {
  62                 DEBUG(1,("could not find domain entry for sid %s\n",
  63                          request->data.sid));
  64                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
  65                 return tevent_req_post(req, ev);
  66         }
  67
  68         num_sids = 0;
  69         sids = NULL;
  70
  71         if (request->extra_data.data != NULL) {
  72                 if (request->extra_data.data[request->extra_len-1] != '\0') {
  73                         DEBUG(1, ("Got non-NULL terminated sidlist\n"));
  74                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  75                         return tevent_req_post(req, ev);
  76                 }
  77                 if (!parse_sidlist(state, request->extra_data.data,
  78                                    &sids, &num_sids)) {
  79                         DEBUG(1, ("Could not parse SID list: %s\n",
  80                                   request->extra_data.data));
  81                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  82                         return tevent_req_post(req, ev);
  83                 }
  84         }
  85
  86         if (DEBUGLEVEL >= 10) {
  87                 size_t i;
  88                 for (i=0; i<num_sids; i++) {
  89                         fstring sidstr;
  90                         sid_to_fstring(sidstr, &sids[i]);
  91                         DEBUGADD(10, ("%s\n", sidstr));
  92                 }
  93         }
  94
  95         subreq = wb_lookupuseraliases_send(state, ev, domain, num_sids, sids);
  96         if (tevent_req_nomem(subreq, req)) {
  97                 return tevent_req_post(req, ev);
  98         }
  99         tevent_req_set_callback(subreq, winbindd_getsidaliases_done, req);
 100         return req;
 101 }
 102
 103 static void winbindd_getsidaliases_done(struct tevent_req *subreq)
 104 {
 105         struct tevent_req *req = tevent_req_callback_data(
 106                 subreq, struct tevent_req);
 107         struct winbindd_getsidaliases_state *state = tevent_req_data(
 108                 req, struct winbindd_getsidaliases_state);
 109         NTSTATUS status;
 110
 111         status = wb_lookupuseraliases_recv(subreq, state, &state->num_aliases,
 112                                            &state->aliases);
 113         TALLOC_FREE(subreq);
 114         if (!NT_STATUS_IS_OK(status)) {
 115                 tevent_req_nterror(req, status);
 116                 return;
 117         }
 118         tevent_req_done(req);
 119 }
 120
 121 NTSTATUS winbindd_getsidaliases_recv(struct tevent_req *req,
 122                                      struct winbindd_response *response)
 123 {
 124         struct winbindd_getsidaliases_state *state = tevent_req_data(
 125                 req, struct winbindd_getsidaliases_state);
 126         NTSTATUS status;
 127         int i;
 128         char *sidlist;
 129
 130         if (tevent_req_is_nterror(req, &status)) {
 131                 return status;
 132         }
 133
 134         sidlist = talloc_strdup(response, "");
 135         if (sidlist == NULL) {
 136                 return NT_STATUS_NO_MEMORY;
 137         }
 138         for (i=0; i<state->num_aliases; i++) {
 139                 struct dom_sid sid;
 140                 fstring tmp;
 141                 sid_compose(&sid, &state->sid, state->aliases[i]);
 142
 143                 sidlist = talloc_asprintf_append_buffer(
 144                         sidlist, "%s\n", sid_to_fstring(tmp, &sid));
 145                 if (sidlist == NULL) {
 146                         return NT_STATUS_NO_MEMORY;
 147                 }
 148         }
 149         response->extra_data.data = sidlist;
 150         response->length += talloc_get_size(sidlist);
 151         response->data.num_entries = state->num_aliases;
 152         return NT_STATUS_OK;
 153 }