source3/winbindd/winbindd_xids_to_sids.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_SIDS_TO_XIDS
   4    Copyright (C) Volker Lendecke 2011
   5    Copyright (C) Michael Adam 2012
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "winbindd.h"
  23 #include "../libcli/security/security.h"
  24
  25
  26 struct winbindd_xids_to_sids_state {
  27         struct tevent_context *ev;
  28
  29         struct unixid *xids;
  30         uint32_t num_xids;
  31
  32         struct dom_sid *sids;
  33 };
  34
  35 static void winbindd_xids_to_sids_done(struct tevent_req *subreq);
  36
  37 struct tevent_req *winbindd_xids_to_sids_send(TALLOC_CTX *mem_ctx,
  38                                               struct tevent_context *ev,
  39                                               struct winbindd_cli_state *cli,
  40                                               struct winbindd_request *request)
  41 {
  42         struct tevent_req *req, *subreq;
  43         struct winbindd_xids_to_sids_state *state;
  44
  45         req = tevent_req_create(mem_ctx, &state,
  46                                 struct winbindd_xids_to_sids_state);
  47         if (req == NULL) {
  48                 return NULL;
  49         }
  50         state->ev = ev;
  51
  52         DEBUG(3, ("xids_to_sids\n"));
  53
  54         if (request->extra_len == 0) {
  55                 tevent_req_done(req);
  56                 return tevent_req_post(req, ev);
  57         }
  58         if (request->extra_data.data[request->extra_len-1] != '\0') {
  59                 DEBUG(10, ("Got invalid xids list\n"));
  60                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  61                 return tevent_req_post(req, ev);
  62         }
  63         if (!parse_xidlist(state, request->extra_data.data,
  64                            &state->xids, &state->num_xids)) {
  65                 DEBUG(10, ("parse_sidlist failed\n"));
  66                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  67                 return tevent_req_post(req, ev);
  68         }
  69
  70         DEBUG(10, ("num_xids: %d\n", (int)state->num_xids));
  71
  72         subreq = wb_xids2sids_send(state, ev, state->xids, state->num_xids);
  73         if (tevent_req_nomem(subreq, req)) {
  74                 return tevent_req_post(req, ev);
  75         }
  76         tevent_req_set_callback(subreq, winbindd_xids_to_sids_done, req);
  77         return req;
  78 }
  79
  80 static void winbindd_xids_to_sids_done(struct tevent_req *subreq)
  81 {
  82         struct tevent_req *req = tevent_req_callback_data(
  83                 subreq, struct tevent_req);
  84         struct winbindd_xids_to_sids_state *state = tevent_req_data(
  85                 req, struct winbindd_xids_to_sids_state);
  86         NTSTATUS status;
  87
  88         status = wb_xids2sids_recv(subreq, state, &state->sids);
  89         TALLOC_FREE(subreq);
  90         if (tevent_req_nterror(req, status)) {
  91                 return;
  92         }
  93         tevent_req_done(req);
  94 }
  95
  96 NTSTATUS winbindd_xids_to_sids_recv(struct tevent_req *req,
  97                                     struct winbindd_response *response)
  98 {
  99         struct winbindd_xids_to_sids_state *state = tevent_req_data(
 100                 req, struct winbindd_xids_to_sids_state);
 101         NTSTATUS status;
 102         char *result = NULL;
 103         uint32_t i;
 104
 105         if (tevent_req_is_nterror(req, &status)) {
 106                 DEBUG(5, ("Could not convert sids: %s\n", nt_errstr(status)));
 107                 return status;
 108         }
 109
 110         result = talloc_strdup(response, "");
 111         if (result == NULL) {
 112                 return NT_STATUS_NO_MEMORY;
 113         }
 114
 115         for (i=0; i<state->num_xids; i++) {
 116                 char sidbuf[DOM_SID_STR_BUFLEN];
 117
 118                 if (is_null_sid(&state->sids[i])) {
 119                         strlcpy(sidbuf, "-", sizeof(sidbuf));
 120                 } else {
 121                         dom_sid_string_buf(&state->sids[i],
 122                                            sidbuf, sizeof(sidbuf));
 123                 }
 124
 125                 result = talloc_asprintf_append_buffer(
 126                         result, "%s\n", sidbuf);
 127                 if (result == NULL) {
 128                         return NT_STATUS_NO_MEMORY;
 129                 }
 130         }
 131
 132         response->extra_data.data = result;
 133         response->length += talloc_get_size(result);
 134
 135         return NT_STATUS_OK;
 136 }