source3/winbindd/winbindd_sids_to_xids.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_sids_to_xids_state {
  27         struct tevent_context *ev;
  28         struct dom_sid *sids;
  29         uint32_t num_sids;
  30         struct unixid *xids;
  31 };
  32
  33 static void winbindd_sids_to_xids_done(struct tevent_req *subreq);
  34
  35 struct tevent_req *winbindd_sids_to_xids_send(TALLOC_CTX *mem_ctx,
  36                                               struct tevent_context *ev,
  37                                               struct winbindd_cli_state *cli,
  38                                               struct winbindd_request *request)
  39 {
  40         struct tevent_req *req, *subreq;
  41         struct winbindd_sids_to_xids_state *state;
  42
  43         req = tevent_req_create(mem_ctx, &state,
  44                                 struct winbindd_sids_to_xids_state);
  45         if (req == NULL) {
  46                 return NULL;
  47         }
  48         state->ev = ev;
  49
  50         DEBUG(3, ("sids_to_xids\n"));
  51
  52         if (request->extra_len == 0) {
  53                 tevent_req_done(req);
  54                 return tevent_req_post(req, ev);
  55         }
  56         if (request->extra_data.data[request->extra_len-1] != '\0') {
  57                 DEBUG(10, ("Got invalid sids list\n"));
  58                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  59                 return tevent_req_post(req, ev);
  60         }
  61         if (!parse_sidlist(state, request->extra_data.data,
  62                            &state->sids, &state->num_sids)) {
  63                 DEBUG(10, ("parse_sidlist failed\n"));
  64                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  65                 return tevent_req_post(req, ev);
  66         }
  67
  68         DEBUG(10, ("num_sids: %d\n", (int)state->num_sids));
  69
  70         subreq = wb_sids2xids_send(state, ev, state->sids, state->num_sids);
  71         if (tevent_req_nomem(subreq, req)) {
  72                 return tevent_req_post(req, ev);
  73         }
  74
  75         tevent_req_set_callback(subreq, winbindd_sids_to_xids_done, req);
  76         return req;
  77 }
  78
  79 static void winbindd_sids_to_xids_done(struct tevent_req *subreq)
  80 {
  81         struct tevent_req *req = tevent_req_callback_data(
  82                 subreq, struct tevent_req);
  83         struct winbindd_sids_to_xids_state *state = tevent_req_data(
  84                 req, struct winbindd_sids_to_xids_state);
  85         NTSTATUS status;
  86
  87         state->xids = talloc_zero_array(state, struct unixid, state->num_sids);
  88         if (tevent_req_nomem(state->xids, req)) {
  89                 return;
  90         }
  91
  92         status = wb_sids2xids_recv(subreq, state->xids, state->num_sids);
  93         TALLOC_FREE(subreq);
  94         if (tevent_req_nterror(req, status)) {
  95                 return;
  96         }
  97         tevent_req_done(req);
  98 }
  99
 100 NTSTATUS winbindd_sids_to_xids_recv(struct tevent_req *req,
 101                                     struct winbindd_response *response)
 102 {
 103         struct winbindd_sids_to_xids_state *state = tevent_req_data(
 104                 req, struct winbindd_sids_to_xids_state);
 105         NTSTATUS status;
 106         char *result = NULL;
 107         uint32_t i;
 108
 109         if (tevent_req_is_nterror(req, &status)) {
 110                 DEBUG(5, ("Could not convert sids: %s\n", nt_errstr(status)));
 111                 return status;
 112         }
 113
 114         result = talloc_strdup(response, "");
 115         if (result == NULL) {
 116                 return NT_STATUS_NO_MEMORY;
 117         }
 118
 119         for (i=0; i<state->num_sids; i++) {
 120                 char type = '\0';
 121                 bool found = true;
 122                 struct unixid xid;
 123
 124                 xid = state->xids[i];
 125
 126                 switch (xid.type) {
 127                 case ID_TYPE_UID:
 128                         type = 'U';
 129                         break;
 130                 case ID_TYPE_GID:
 131                         type = 'G';
 132                         break;
 133                 case ID_TYPE_BOTH:
 134                         type = 'B';
 135                         break;
 136                 default:
 137                         found = false;
 138                         break;
 139                 }
 140
 141                 if (xid.id == UINT32_MAX) {
 142                         found = false;
 143                 }
 144
 145                 if (found) {
 146                         result = talloc_asprintf_append_buffer(
 147                                 result, "%c%lu\n", type,
 148                                 (unsigned long)xid.id);
 149                 } else {
 150                         result = talloc_asprintf_append_buffer(result, "\n");
 151                 }
 152                 if (result == NULL) {
 153                         return NT_STATUS_NO_MEMORY;
 154                 }
 155         }
 156
 157         response->extra_data.data = result;
 158         response->length += talloc_get_size(result);
 159
 160         return NT_STATUS_OK;
 161 }