source3/winbindd/winbindd_getgrgid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_GETGRGID
   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_getgrgid_state {
  24         struct tevent_context *ev;
  25         struct dom_sid sid;
  26         const char *domname;
  27         const char *name;
  28         gid_t gid;
  29         struct talloc_dict *members;
  30 };
  31
  32 static void winbindd_getgrgid_gid2sid_done(struct tevent_req *subreq);
  33 static void winbindd_getgrgid_done(struct tevent_req *subreq);
  34
  35 struct tevent_req *winbindd_getgrgid_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_getgrgid_state *state;
  42
  43         req = tevent_req_create(mem_ctx, &state,
  44                                 struct winbindd_getgrgid_state);
  45         if (req == NULL) {
  46                 return NULL;
  47         }
  48         state->ev = ev;
  49
  50         DEBUG(3, ("getgrgid %d\n", (int)request->data.gid));
  51
  52         subreq = wb_gid2sid_send(state, ev, request->data.gid);
  53         if (tevent_req_nomem(subreq, req)) {
  54                 return tevent_req_post(req, ev);
  55         }
  56         tevent_req_set_callback(subreq, winbindd_getgrgid_gid2sid_done,
  57                                 req);
  58         return req;
  59 }
  60
  61 static void winbindd_getgrgid_gid2sid_done(struct tevent_req *subreq)
  62 {
  63         struct tevent_req *req = tevent_req_callback_data(
  64                 subreq, struct tevent_req);
  65         struct winbindd_getgrgid_state *state = tevent_req_data(
  66                 req, struct winbindd_getgrgid_state);
  67         NTSTATUS status;
  68
  69         status = wb_gid2sid_recv(subreq, &state->sid);
  70         TALLOC_FREE(subreq);
  71         if (tevent_req_nterror(req, status)) {
  72                 return;
  73         }
  74
  75         subreq = wb_getgrsid_send(state, state->ev, &state->sid,
  76                                   lp_winbind_expand_groups());
  77         if (tevent_req_nomem(subreq, req)) {
  78                 return;
  79         }
  80         tevent_req_set_callback(subreq, winbindd_getgrgid_done, req);
  81 }
  82
  83 static void winbindd_getgrgid_done(struct tevent_req *subreq)
  84 {
  85         struct tevent_req *req = tevent_req_callback_data(
  86                 subreq, struct tevent_req);
  87         struct winbindd_getgrgid_state *state = tevent_req_data(
  88                 req, struct winbindd_getgrgid_state);
  89         NTSTATUS status;
  90
  91         status = wb_getgrsid_recv(subreq, state, &state->domname, &state->name,
  92                                   &state->gid, &state->members);
  93         TALLOC_FREE(subreq);
  94         if (tevent_req_nterror(req, status)) {
  95                 return;
  96         }
  97         tevent_req_done(req);
  98 }
  99
 100 NTSTATUS winbindd_getgrgid_recv(struct tevent_req *req,
 101                                 struct winbindd_response *response)
 102 {
 103         struct winbindd_getgrgid_state *state = tevent_req_data(
 104                 req, struct winbindd_getgrgid_state);
 105         NTSTATUS status;
 106         int num_members;
 107         char *buf;
 108
 109         if (tevent_req_is_nterror(req, &status)) {
 110                 DEBUG(5, ("Could not convert sid %s: %s\n",
 111                           sid_string_dbg(&state->sid), nt_errstr(status)));
 112                 return status;
 113         }
 114
 115         if (!fill_grent(talloc_tos(), &response->data.gr, state->domname,
 116                         state->name, state->gid)) {
 117                 DEBUG(5, ("fill_grent failed\n"));
 118                 return NT_STATUS_NO_MEMORY;
 119         }
 120
 121         status = winbindd_print_groupmembers(state->members, response,
 122                                              &num_members, &buf);
 123         if (!NT_STATUS_IS_OK(status)) {
 124                 return status;
 125         }
 126
 127         response->data.gr.num_gr_mem = (uint32_t)num_members;
 128
 129         /* Group membership lives at start of extra data */
 130
 131         response->data.gr.gr_mem_ofs = 0;
 132         response->extra_data.data = buf;
 133         response->length += talloc_get_size(response->extra_data.data);
 134
 135         return NT_STATUS_OK;
 136 }