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 #include "../libcli/security/security.h"
  23
  24 struct winbindd_getsidaliases_state {
  25         struct dom_sid sid;
  26         uint32_t num_aliases;
  27         uint32_t *aliases;
  28 };
  29
  30 static void winbindd_getsidaliases_done(struct tevent_req *subreq);
  31
  32 struct tevent_req *winbindd_getsidaliases_send(TALLOC_CTX *mem_ctx,
  33                                                struct tevent_context *ev,
  34                                                struct winbindd_cli_state *cli,
  35                                                struct winbindd_request *request)
  36 {
  37         struct tevent_req *req, *subreq;
  38         struct winbindd_getsidaliases_state *state;
  39         struct winbindd_domain *domain;
  40         uint32_t num_sids, i;
  41         struct dom_sid *sids;
  42
  43         req = tevent_req_create(mem_ctx, &state,
  44                                 struct winbindd_getsidaliases_state);
  45         if (req == NULL) {
  46                 return NULL;
  47         }
  48
  49         /* Ensure null termination */
  50         request->data.sid[sizeof(request->data.sid)-1]='\0';
  51
  52         if (!string_to_sid(&state->sid, request->data.sid)) {
  53                 D_WARNING("Could not get convert sid %s from string\n",
  54                           request->data.sid);
  55                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  56                 return tevent_req_post(req, ev);
  57         }
  58
  59         domain = find_domain_from_sid_noinit(&state->sid);
  60         if (domain == NULL) {
  61                 D_WARNING("could not find domain entry for sid %s\n",
  62                          request->data.sid);
  63                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
  64                 return tevent_req_post(req, ev);
  65         }
  66
  67         num_sids = 0;
  68         sids = NULL;
  69
  70         if (request->extra_data.data != NULL) {
  71                 if (request->extra_data.data[request->extra_len-1] != '\0') {
  72                         D_WARNING("Got non-NULL terminated sidlist\n");
  73                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  74                         return tevent_req_post(req, ev);
  75                 }
  76                 if (!parse_sidlist(state, request->extra_data.data,
  77                                    &sids, &num_sids)) {
  78                         D_WARNING("Could not parse SID list: %s\n",
  79                                   request->extra_data.data);
  80                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  81                         return tevent_req_post(req, ev);
  82                 }
  83         }
  84
  85         D_NOTICE("[%s (%u)] Winbind external command GETSIDALIASES start.\n"
  86                  "sid=%s\n",
  87                  cli->client_name,
  88                  (unsigned int)cli->pid,
  89                  request->data.sid);
  90         if (CHECK_DEBUGLVL(DBGLVL_DEBUG)) {
  91                 for (i = 0; i < num_sids; i++) {
  92                         struct dom_sid_buf sidstr;
  93                         D_NOTICE("%"PRIu32": %s\n",
  94                                  i, dom_sid_str_buf(&sids[i], &sidstr));
  95                 }
  96         }
  97
  98         subreq = wb_lookupuseraliases_send(state, ev, domain, num_sids, sids);
  99         if (tevent_req_nomem(subreq, req)) {
 100                 return tevent_req_post(req, ev);
 101         }
 102         tevent_req_set_callback(subreq, winbindd_getsidaliases_done, req);
 103         return req;
 104 }
 105
 106 static void winbindd_getsidaliases_done(struct tevent_req *subreq)
 107 {
 108         struct tevent_req *req = tevent_req_callback_data(
 109                 subreq, struct tevent_req);
 110         struct winbindd_getsidaliases_state *state = tevent_req_data(
 111                 req, struct winbindd_getsidaliases_state);
 112         NTSTATUS status;
 113
 114         status = wb_lookupuseraliases_recv(subreq, state, &state->num_aliases,
 115                                            &state->aliases);
 116         TALLOC_FREE(subreq);
 117         if (tevent_req_nterror(req, status)) {
 118                 return;
 119         }
 120         tevent_req_done(req);
 121 }
 122
 123 NTSTATUS winbindd_getsidaliases_recv(struct tevent_req *req,
 124                                      struct winbindd_response *response)
 125 {
 126         struct winbindd_getsidaliases_state *state = tevent_req_data(
 127                 req, struct winbindd_getsidaliases_state);
 128         NTSTATUS status;
 129         uint32_t i;
 130         char *sidlist;
 131
 132         if (tevent_req_is_nterror(req, &status)) {
 133                 D_WARNING("Failed with %s.\n", nt_errstr(status));
 134                 return status;
 135         }
 136
 137         sidlist = talloc_strdup(response, "");
 138
 139         D_NOTICE("Winbind external command GETSIDALIASES end.\n"
 140                  "Received %"PRIu32" alias(es).\n",
 141                  state->num_aliases);
 142         for (i=0; i<state->num_aliases; i++) {
 143                 struct dom_sid sid;
 144                 struct dom_sid_buf tmp;
 145                 sid_compose(&sid, &state->sid, state->aliases[i]);
 146
 147                 talloc_asprintf_addbuf(
 148                         &sidlist, "%s\n", dom_sid_str_buf(&sid, &tmp));
 149                 D_NOTICE("%"PRIu32": %s\n", i, dom_sid_str_buf(&sid, &tmp));
 150         }
 151
 152         if (sidlist == NULL) {
 153                 return NT_STATUS_NO_MEMORY;
 154         }
 155
 156         response->extra_data.data = sidlist;
 157         response->length += talloc_get_size(sidlist);
 158         response->data.num_entries = state->num_aliases;
 159         return NT_STATUS_OK;
 160 }